---
_id: '14628'
abstract:
- lang: eng
text: We introduce a compact, intuitive procedural graph representation for cellular
metamaterials, which are small-scale, tileable structures that can be architected
to exhibit many useful material properties. Because the structures’ “architectures”
vary widely—with elements such as beams, thin shells, and solid bulks—it is difficult
to explore them using existing representations. Generic approaches like voxel
grids are versatile, but it is cumbersome to represent and edit individual structures;
architecture-specific approaches address these issues, but are incompatible with
one another. By contrast, our procedural graph succinctly represents the construction
process for any structure using a simple skeleton annotated with spatially varying
thickness. To express the highly constrained triply periodic minimal surfaces
(TPMS) in this manner, we present the first fully automated version of the conjugate
surface construction method, which allows novices to create complex TPMS from
intuitive input. We demonstrate our representation’s expressiveness, accuracy,
and compactness by constructing a wide range of established structures and hundreds
of novel structures with diverse architectures and material properties. We also
conduct a user study to verify our representation’s ease-of-use and ability to
expand engineers’ capacity for exploration.
acknowledgement: "The authors thank Mina Konaković Luković and Michael Foshey for
their early contributions to this project, David Palmer and Paul Zhang for their
insightful discussions about minimal surfaces and the CSCM, Julian Panetta for providing
the Elastic Textures code, and Hannes Hergeth for his feedback and support. We also
thank our user study participants and anonymous reviewers.\r\nThis material is based
upon work supported by the National Science Foundation\r\n(NSF) Graduate Research
Fellowship under Grant No. 2141064; the MIT Morningside\r\nAcademy for Design Fellowship;
the Defense Advanced Research Projects Agency\r\n(DARPA) Grant No. FA8750-20-C-0075;
the ERC Consolidator Grant No. 101045083,\r\n“CoDiNA: Computational Discovery of
Numerical Algorithms for Animation and Simulation of Natural Phenomena”; and the
NewSat project, which is co-funded by the Operational Program for Competitiveness
and Internationalisation (COMPETE2020), Portugal 2020, the European Regional Development
Fund (ERDF), and the Portuguese Foundation for Science and Technology (FTC) under
the MIT Portugal program."
article_number: '168'
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Liane
full_name: Makatura, Liane
last_name: Makatura
- first_name: Bohan
full_name: Wang, Bohan
last_name: Wang
- first_name: Yi-Lu
full_name: Chen, Yi-Lu
id: 0b467602-dbcd-11ea-9d1d-ed480aa46b70
last_name: Chen
- first_name: Bolei
full_name: Deng, Bolei
last_name: Deng
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Wojciech
full_name: Matusik, Wojciech
last_name: Matusik
citation:
ama: 'Makatura L, Wang B, Chen Y-L, et al. Procedural metamaterials: A unified procedural
graph for metamaterial design. ACM Transactions on Graphics. 2023;42(5).
doi:10.1145/3605389'
apa: 'Makatura, L., Wang, B., Chen, Y.-L., Deng, B., Wojtan, C., Bickel, B., &
Matusik, W. (2023). Procedural metamaterials: A unified procedural graph for metamaterial
design. ACM Transactions on Graphics. Association for Computing Machinery.
https://doi.org/10.1145/3605389'
chicago: 'Makatura, Liane, Bohan Wang, Yi-Lu Chen, Bolei Deng, Chris Wojtan, Bernd
Bickel, and Wojciech Matusik. “Procedural Metamaterials: A Unified Procedural
Graph for Metamaterial Design.” ACM Transactions on Graphics. Association
for Computing Machinery, 2023. https://doi.org/10.1145/3605389.'
ieee: 'L. Makatura et al., “Procedural metamaterials: A unified procedural
graph for metamaterial design,” ACM Transactions on Graphics, vol. 42,
no. 5. Association for Computing Machinery, 2023.'
ista: 'Makatura L, Wang B, Chen Y-L, Deng B, Wojtan C, Bickel B, Matusik W. 2023.
Procedural metamaterials: A unified procedural graph for metamaterial design.
ACM Transactions on Graphics. 42(5), 168.'
mla: 'Makatura, Liane, et al. “Procedural Metamaterials: A Unified Procedural Graph
for Metamaterial Design.” ACM Transactions on Graphics, vol. 42, no. 5,
168, Association for Computing Machinery, 2023, doi:10.1145/3605389.'
short: L. Makatura, B. Wang, Y.-L. Chen, B. Deng, C. Wojtan, B. Bickel, W. Matusik,
ACM Transactions on Graphics 42 (2023).
date_created: 2023-11-29T15:02:03Z
date_published: 2023-10-01T00:00:00Z
date_updated: 2023-12-04T08:09:05Z
day: '01'
ddc:
- '531'
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department:
- _id: GradSch
- _id: ChWo
- _id: BeBi
doi: 10.1145/3605389
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creator: yichen
date_created: 2023-11-29T15:16:01Z
date_updated: 2023-11-29T15:16:01Z
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file_size: 57067476
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success: 1
file_date_updated: 2023-12-04T08:04:14Z
has_accepted_license: '1'
intvolume: ' 42'
issue: '5'
keyword:
- Computer Graphics and Computer-Aided Design
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088
grant_number: '101045083'
name: Computational Discovery of Numerical Algorithms for Animation and Simulation
of Natural Phenomena
publication: ACM Transactions on Graphics
publication_identifier:
issn:
- 0730-0301
- 1557-7368
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: 'Procedural metamaterials: A unified procedural graph for metamaterial design'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '13188'
abstract:
- lang: eng
text: "The Kirchhoff rod model describes the bending and twisting of slender elastic
rods in three dimensions, and has been widely studied to enable the prediction
of how a rod will deform, given its geometry and boundary conditions. In this
work, we study a number of inverse problems with the goal of computing the geometry
of a straight rod that will automatically deform to match a curved target shape
after attaching its endpoints to a support structure. Our solution lets us finely
control the static equilibrium state of a rod by varying the cross-sectional profiles
along its length.\r\nWe also show that the set of physically realizable equilibrium
states admits a concise geometric description in terms of linear line complexes,
which leads to very efficient computational design algorithms. Implemented in
an interactive software tool, they allow us to convert three-dimensional hand-drawn
spline curves to elastic rods, and give feedback about the feasibility and practicality
of a design in real time. We demonstrate the efficacy of our method by designing
and manufacturing several physical prototypes with applications to interior design
and soft robotics."
acknowledged_ssus:
- _id: M-Shop
acknowledgement: We thank the anonymous reviewers for their generous feedback, and
Julian Fischer for his help in proving Proposition 1. This project has received
funding from the European Research Council (ERC) under the European Union’s Horizon
2020 research and innovation programme (grant agreement No. 715767).
article_number: '171'
article_processing_charge: No
article_type: original
author:
- first_name: Christian
full_name: Hafner, Christian
id: 400429CC-F248-11E8-B48F-1D18A9856A87
last_name: Hafner
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Hafner C, Bickel B. The design space of Kirchhoff rods. ACM Transactions
on Graphics. 2023;42(5). doi:10.1145/3606033
apa: Hafner, C., & Bickel, B. (2023). The design space of Kirchhoff rods. ACM
Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3606033
chicago: Hafner, Christian, and Bernd Bickel. “The Design Space of Kirchhoff Rods.”
ACM Transactions on Graphics. Association for Computing Machinery, 2023.
https://doi.org/10.1145/3606033.
ieee: C. Hafner and B. Bickel, “The design space of Kirchhoff rods,” ACM Transactions
on Graphics, vol. 42, no. 5. Association for Computing Machinery, 2023.
ista: Hafner C, Bickel B. 2023. The design space of Kirchhoff rods. ACM Transactions
on Graphics. 42(5), 171.
mla: Hafner, Christian, and Bernd Bickel. “The Design Space of Kirchhoff Rods.”
ACM Transactions on Graphics, vol. 42, no. 5, 171, Association for Computing
Machinery, 2023, doi:10.1145/3606033.
short: C. Hafner, B. Bickel, ACM Transactions on Graphics 42 (2023).
date_created: 2023-07-04T07:41:30Z
date_published: 2023-09-20T00:00:00Z
date_updated: 2024-03-25T23:30:26Z
day: '20'
ddc:
- '516'
department:
- _id: BeBi
doi: 10.1145/3606033
ec_funded: 1
external_id:
isi:
- '001086833300010'
file:
- access_level: open_access
checksum: 4954c1cfa487725bc156dcfec872478a
content_type: application/pdf
creator: chafner
date_created: 2023-07-04T08:11:28Z
date_updated: 2023-07-04T08:11:28Z
file_id: '13194'
file_name: kirchhoff-rods.pdf
file_size: 19635168
relation: main_file
success: 1
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checksum: 79c9975fbc82ff71f1767331d2204cca
content_type: application/pdf
creator: chafner
date_created: 2023-07-04T07:46:28Z
date_updated: 2023-07-04T07:46:28Z
file_id: '13190'
file_name: supp-main.pdf
file_size: 420909
relation: supplementary_material
title: Supplemental Material with Proofs
- access_level: open_access
checksum: 4ab647e4f03c711e1e6a5fc1eb8684db
content_type: application/pdf
creator: chafner
date_created: 2023-07-04T07:46:30Z
date_updated: 2023-07-04T07:46:30Z
file_id: '13191'
file_name: supp-cheat.pdf
file_size: 430086
relation: supplementary_material
title: Cheat Sheet for Notation
- access_level: open_access
checksum: c0fd9a57d012046de90c185ffa904b76
content_type: video/mp4
creator: chafner
date_created: 2023-07-04T07:46:39Z
date_updated: 2023-07-04T07:46:39Z
file_id: '13192'
file_name: kirchhoff-video-final.mp4
file_size: 268088064
relation: supplementary_material
title: Supplemental Video
- access_level: open_access
checksum: 71b00712b489ada2cd9815910ee180a9
content_type: application/x-zip-compressed
creator: chafner
date_created: 2023-07-04T07:47:10Z
date_updated: 2023-07-04T07:47:10Z
file_id: '13193'
file_name: matlab-submission.zip
file_size: 25790
relation: supplementary_material
title: Matlab Source Code with Example
file_date_updated: 2023-07-04T08:11:28Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '5'
keyword:
- Computer Graphics
- Computational Design
- Computational Geometry
- Shape Modeling
language:
- iso: eng
month: '09'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
record:
- id: '12897'
relation: part_of_dissertation
status: public
status: public
title: The design space of Kirchhoff rods
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '13265'
abstract:
- lang: eng
text: In this study, we propose a computational framework for optimizing the continuity
of the toolpath in fabricating surface models on an extrusion-based 3D printer.
Toolpath continuity is a critical issue that influences both the quality and the
efficiency of extrusion-based fabrication. Transfer moves lead to rough and bumpy
surfaces, where this phenomenon worsens for materials with large viscosity, like
clay. The effects of continuity on the surface models are even more severe in
terms of the quality of the surface and the stability of the model. We introduce
a criterion called the one–path patch (OPP) to represent a patch on the surface
of the shell that can be traversed along one path by considering the constraints
on fabrication. We study the properties of the OPPs and their merging operations
to propose a bottom-up OPP merging procedure to decompose the given shell surface
into a minimal number of OPPs, and to generate the “as-continuous-as-possible”
(ACAP) toolpath. Furthermore, we augment the path planning algorithm with a curved-layer
printing scheme that reduces staircase defects and improves the continuity of
the toolpath by connecting multiple segments. We evaluated the ACAP algorithm
on ceramic and thermoplastic materials, and the results showed that it improves
the fabrication of surface models in terms of both efficiency and surface quality.
acknowledgement: 'This work was supported in part by grants from the NSFC (61972232),
Science and Technology Program of Shenzhen, China (CJGJZD20200617102202007). '
article_number: '26'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Fanchao
full_name: Zhong, Fanchao
last_name: Zhong
- first_name: Yonglai
full_name: Xu, Yonglai
last_name: Xu
- first_name: Haisen
full_name: Zhao, Haisen
id: fb7f793a-80d1-11eb-8869-d56e5b2a8ff4
last_name: Zhao
orcid: 0000-0002-6389-1045
- first_name: Lin
full_name: Lu, Lin
last_name: Lu
citation:
ama: Zhong F, Xu Y, Zhao H, Lu L. As-Continuous-As-Possible extrusion-based fabrication
of surface models. ACM Transactions on Graphics. 2023;42(3). doi:10.1145/3575859
apa: Zhong, F., Xu, Y., Zhao, H., & Lu, L. (2023). As-Continuous-As-Possible
extrusion-based fabrication of surface models. ACM Transactions on Graphics.
Association for Computing Machinery. https://doi.org/10.1145/3575859
chicago: Zhong, Fanchao, Yonglai Xu, Haisen Zhao, and Lin Lu. “As-Continuous-As-Possible
Extrusion-Based Fabrication of Surface Models.” ACM Transactions on Graphics.
Association for Computing Machinery, 2023. https://doi.org/10.1145/3575859.
ieee: F. Zhong, Y. Xu, H. Zhao, and L. Lu, “As-Continuous-As-Possible extrusion-based
fabrication of surface models,” ACM Transactions on Graphics, vol. 42,
no. 3. Association for Computing Machinery, 2023.
ista: Zhong F, Xu Y, Zhao H, Lu L. 2023. As-Continuous-As-Possible extrusion-based
fabrication of surface models. ACM Transactions on Graphics. 42(3), 26.
mla: Zhong, Fanchao, et al. “As-Continuous-As-Possible Extrusion-Based Fabrication
of Surface Models.” ACM Transactions on Graphics, vol. 42, no. 3, 26, Association
for Computing Machinery, 2023, doi:10.1145/3575859.
short: F. Zhong, Y. Xu, H. Zhao, L. Lu, ACM Transactions on Graphics 42 (2023).
date_created: 2023-07-23T22:01:13Z
date_published: 2023-03-17T00:00:00Z
date_updated: 2023-12-13T11:34:59Z
day: '17'
department:
- _id: BeBi
doi: 10.1145/3575859
external_id:
arxiv:
- '2201.02374'
isi:
- '001018739600002'
intvolume: ' 42'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2201.02374
month: '03'
oa: 1
oa_version: Preprint
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: As-Continuous-As-Possible extrusion-based fabrication of surface models
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '14240'
abstract:
- lang: eng
text: This paper introduces a novel method for simulating large bodies of water
as a height field. At the start of each time step, we partition the waves into
a bulk flow (which approximately satisfies the assumptions of the shallow water
equations) and surface waves (which approximately satisfy the assumptions of Airy
wave theory). We then solve the two wave regimes separately using appropriate
state-of-the-art techniques, and re-combine the resulting wave velocities at the
end of each step. This strategy leads to the first heightfield wave model capable
of simulating complex interactions between both deep and shallow water effects,
like the waves from a boat wake sloshing up onto a beach, or a dam break producing
wave interference patterns and eddies. We also analyze the numerical dispersion
created by our method and derive an exact correction factor for waves at a constant
water depth, giving us a numerically perfect re-creation of theoretical water
wave dispersion patterns.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: "We thank Georg Sperl for helping with early research for this paper,
Mickael Ly and Yi-Lu Chen for proofreading, and members of the ISTA Visual Computing
Group for general feedback. This project was funded in part by the European Research
Council (ERC Consolidator Grant 101045083 CoDiNA).\r\nThe motorboat and sailboat
were modeled by Sergei and the palmtrees by YadroGames. The environment map was
created by Emil Persson."
article_number: '83'
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Stefan
full_name: Jeschke, Stefan
id: 44D6411A-F248-11E8-B48F-1D18A9856A87
last_name: Jeschke
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
citation:
ama: Jeschke S, Wojtan C. Generalizing shallow water simulations with dispersive
surface waves. ACM Transactions on Graphics. 2023;42(4). doi:10.1145/3592098
apa: Jeschke, S., & Wojtan, C. (2023). Generalizing shallow water simulations
with dispersive surface waves. ACM Transactions on Graphics. Association
for Computing Machinery. https://doi.org/10.1145/3592098
chicago: Jeschke, Stefan, and Chris Wojtan. “Generalizing Shallow Water Simulations
with Dispersive Surface Waves.” ACM Transactions on Graphics. Association
for Computing Machinery, 2023. https://doi.org/10.1145/3592098.
ieee: S. Jeschke and C. Wojtan, “Generalizing shallow water simulations with dispersive
surface waves,” ACM Transactions on Graphics, vol. 42, no. 4. Association
for Computing Machinery, 2023.
ista: Jeschke S, Wojtan C. 2023. Generalizing shallow water simulations with dispersive
surface waves. ACM Transactions on Graphics. 42(4), 83.
mla: Jeschke, Stefan, and Chris Wojtan. “Generalizing Shallow Water Simulations
with Dispersive Surface Waves.” ACM Transactions on Graphics, vol. 42,
no. 4, 83, Association for Computing Machinery, 2023, doi:10.1145/3592098.
short: S. Jeschke, C. Wojtan, ACM Transactions on Graphics 42 (2023).
date_created: 2023-08-27T22:01:17Z
date_published: 2023-08-01T00:00:00Z
date_updated: 2024-01-02T09:35:55Z
day: '01'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1145/3592098
external_id:
isi:
- '001044671300049'
file:
- access_level: open_access
checksum: 1d178bb2f8011d9f5aedda6427e18c7a
content_type: video/mp4
creator: sjeschke
date_created: 2023-12-21T12:26:40Z
date_updated: 2023-12-21T12:26:40Z
file_id: '14704'
file_name: PaperVideo_final.mp4
file_size: 511572575
relation: main_file
success: 1
- access_level: open_access
checksum: a49b2e744d5cd1276bb8b2e0ce6dc638
content_type: application/pdf
creator: dernst
date_created: 2024-01-02T09:34:27Z
date_updated: 2024-01-02T09:34:27Z
file_id: '14725'
file_name: 2023_ACMToG_Jeschke.pdf
file_size: 7469177
relation: main_file
success: 1
file_date_updated: 2024-01-02T09:34:27Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '4'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088
grant_number: '101045083'
name: Computational Discovery of Numerical Algorithms for Animation and Simulation
of Natural Phenomena
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Generalizing shallow water simulations with dispersive surface waves
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '12984'
abstract:
- lang: eng
text: Tattoos are a highly popular medium, with both artistic and medical applications.
Although the mechanical process of tattoo application has evolved historically,
the results are reliant on the artisanal skill of the artist. This can be especially
challenging for some skin tones, or in cases where artists lack experience. We
provide the first systematic overview of tattooing as a computational fabrication
technique. We built an automated tattooing rig and a recipe for the creation of
silicone sheets mimicking realistic skin tones, which allowed us to create an
accurate model predicting tattoo appearance. This enables several exciting applications
including tattoo previewing, color retargeting, novel ink spectra optimization,
color-accurate prosthetics, and more.
acknowledged_ssus:
- _id: M-Shop
acknowledgement: We thank Todor Asenov and the Miba Machine Shop for their help in
assembling the tattoo machine and manufacturing the substrates. We thank Geysler
Rodrigues for the insightful discussions on tattooing practices from a professional
artist's perspective. We thank Maria Fernanda Portugal for sharing a doctor's perspective
on medical applications of tattoos. This work is graciously supported by the FWF
Lise Meitner (Grant M 3319).
article_number: '67'
article_processing_charge: No
article_type: original
author:
- first_name: Michael
full_name: Piovarci, Michael
id: 62E473F4-5C99-11EA-A40E-AF823DDC885E
last_name: Piovarci
orcid: 0000-0002-5062-4474
- first_name: Alexandre
full_name: Chapiro, Alexandre
last_name: Chapiro
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: 'Piovarci M, Chapiro A, Bickel B. Skin-Screen: A computational fabrication
framework for color tattoos. Transactions on Graphics. 2023;42(4). doi:10.1145/3592432'
apa: 'Piovarci, M., Chapiro, A., & Bickel, B. (2023). Skin-Screen: A computational
fabrication framework for color tattoos. Transactions on Graphics. Los
Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3592432'
chicago: 'Piovarci, Michael, Alexandre Chapiro, and Bernd Bickel. “Skin-Screen:
A Computational Fabrication Framework for Color Tattoos.” Transactions on Graphics.
Association for Computing Machinery, 2023. https://doi.org/10.1145/3592432.'
ieee: 'M. Piovarci, A. Chapiro, and B. Bickel, “Skin-Screen: A computational fabrication
framework for color tattoos,” Transactions on Graphics, vol. 42, no. 4.
Association for Computing Machinery, 2023.'
ista: 'Piovarci M, Chapiro A, Bickel B. 2023. Skin-Screen: A computational fabrication
framework for color tattoos. Transactions on Graphics. 42(4), 67.'
mla: 'Piovarci, Michael, et al. “Skin-Screen: A Computational Fabrication Framework
for Color Tattoos.” Transactions on Graphics, vol. 42, no. 4, 67, Association
for Computing Machinery, 2023, doi:10.1145/3592432.'
short: M. Piovarci, A. Chapiro, B. Bickel, Transactions on Graphics 42 (2023).
conference:
end_date: 2023-08-10
location: Los Angeles, CA, United States
name: 'SIGGRAPH: Computer Graphics and Interactive Techniques Conference'
start_date: 2023-08-06
date_created: 2023-05-16T09:39:14Z
date_published: 2023-07-26T00:00:00Z
date_updated: 2024-01-29T10:27:23Z
day: '26'
ddc:
- '004'
department:
- _id: BeBi
doi: 10.1145/3592432
external_id:
isi:
- '001044671300033'
file:
- access_level: open_access
checksum: 5f0a6867689e025a661bd0b4fd90b821
content_type: application/pdf
creator: mpiovarc
date_created: 2023-05-16T09:38:25Z
date_updated: 2023-05-16T09:38:25Z
file_id: '12985'
file_name: Piovarci2023.pdf
file_size: 30817343
relation: main_file
success: 1
file_date_updated: 2023-05-16T09:38:25Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '4'
keyword:
- appearance
- modeling
- reproduction
- tattoo
- skin color
- gamut mapping
- ink-optimization
- prosthetic
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: eb901961-77a9-11ec-83b8-f5c883a62027
grant_number: M03319
name: Perception-Aware Appearance Fabrication
publication: Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: 'Skin-Screen: A computational fabrication framework for color tattoos'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '13049'
abstract:
- lang: eng
text: "We propose a computational design approach for covering a surface with individually
addressable RGB LEDs, effectively forming a low-resolution surface screen. To
achieve a low-cost and scalable approach, we propose creating designs from flat
PCB panels bent in-place along the surface of a 3D printed core. Working with
standard rigid PCBs enables the use of\r\nestablished PCB manufacturing services,
allowing the fabrication of designs with several hundred LEDs. \r\nOur approach
optimizes the PCB geometry for folding, and then jointly optimizes the LED packing,
circuit and routing, solving a challenging layout problem under strict manufacturing
requirements. Unlike paper, PCBs cannot bend beyond a certain point without breaking.
Therefore, we introduce parametric cut patterns acting as hinges, designed to
allow bending while remaining compact. To tackle the joint optimization of placement,
circuit and routing, we propose a specialized algorithm that splits the global
problem into one sub-problem per triangle, which is then individually solved.\r\nOur
technique generates PCB blueprints in a completely automated way. After being
fabricated by a PCB manufacturing service, the boards are bent and glued by the
user onto the 3D printed support. We demonstrate our technique on a range of physical
models and virtual examples, creating intricate surface light patterns from hundreds
of LEDs."
acknowledged_ssus:
- _id: M-Shop
acknowledgement: We thank the reviewers for the valuable feedback. We also thank the
Miba Machine Shop at ISTA, PCBWay, and PragoBoard for helping us with fabrication
and assembly. This project was supported by the European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation program (Grant Agreement
No. 715767 – MATERIALIZABLE).
article_number: '142'
article_processing_charge: No
article_type: original
author:
- first_name: Marco
full_name: Freire, Marco
last_name: Freire
- first_name: Manas
full_name: Bhargava, Manas
id: FF8FA64C-AA6A-11E9-99AD-50D4E5697425
last_name: Bhargava
orcid: 0009-0007-6138-6890
- first_name: Camille
full_name: Schreck, Camille
id: 2B14B676-F248-11E8-B48F-1D18A9856A87
last_name: Schreck
- first_name: Pierre-Alexandre
full_name: Hugron, Pierre-Alexandre
last_name: Hugron
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Sylvain
full_name: Lefebvre, Sylvain
last_name: Lefebvre
citation:
ama: 'Freire M, Bhargava M, Schreck C, Hugron P-A, Bickel B, Lefebvre S. PCBend:
Light up your 3D shapes with foldable circuit boards. Transactions on Graphics.
2023;42(4). doi:10.1145/3592411'
apa: 'Freire, M., Bhargava, M., Schreck, C., Hugron, P.-A., Bickel, B., & Lefebvre,
S. (2023). PCBend: Light up your 3D shapes with foldable circuit boards. Transactions
on Graphics. Los Angeles, CA, United States: Association for Computing Machinery.
https://doi.org/10.1145/3592411'
chicago: 'Freire, Marco, Manas Bhargava, Camille Schreck, Pierre-Alexandre Hugron,
Bernd Bickel, and Sylvain Lefebvre. “PCBend: Light up Your 3D Shapes with Foldable
Circuit Boards.” Transactions on Graphics. Association for Computing Machinery,
2023. https://doi.org/10.1145/3592411.'
ieee: 'M. Freire, M. Bhargava, C. Schreck, P.-A. Hugron, B. Bickel, and S. Lefebvre,
“PCBend: Light up your 3D shapes with foldable circuit boards,” Transactions
on Graphics, vol. 42, no. 4. Association for Computing Machinery, 2023.'
ista: 'Freire M, Bhargava M, Schreck C, Hugron P-A, Bickel B, Lefebvre S. 2023.
PCBend: Light up your 3D shapes with foldable circuit boards. Transactions on
Graphics. 42(4), 142.'
mla: 'Freire, Marco, et al. “PCBend: Light up Your 3D Shapes with Foldable Circuit
Boards.” Transactions on Graphics, vol. 42, no. 4, 142, Association for
Computing Machinery, 2023, doi:10.1145/3592411.'
short: M. Freire, M. Bhargava, C. Schreck, P.-A. Hugron, B. Bickel, S. Lefebvre,
Transactions on Graphics 42 (2023).
conference:
end_date: 2023-08-10
location: Los Angeles, CA, United States
name: 'SIGGRAPH: Computer Graphics and Interactive Techniques Conference'
start_date: 2023-08-06
date_created: 2023-05-22T08:37:04Z
date_published: 2023-07-26T00:00:00Z
date_updated: 2024-01-29T10:30:49Z
day: '26'
ddc:
- '006'
department:
- _id: GradSch
- _id: BeBi
doi: 10.1145/3592411
ec_funded: 1
external_id:
isi:
- '001044671300108'
file:
- access_level: open_access
checksum: a0b0ba3b36f43a94388e8824613d812a
content_type: application/pdf
creator: dernst
date_created: 2023-06-19T11:02:23Z
date_updated: 2023-06-19T11:02:23Z
file_id: '13156'
file_name: 2023_ACMToG_Freire.pdf
file_size: 78940724
relation: main_file
success: 1
- access_level: open_access
checksum: b9206bbb67af82df49b7e7cdbde3410c
content_type: application/pdf
creator: dernst
date_created: 2023-06-20T12:20:51Z
date_updated: 2023-06-20T12:20:51Z
file_id: '13157'
file_name: 2023_ACMToG_SuppMaterial_Freire.pdf
file_size: 34345905
relation: main_file
success: 1
file_date_updated: 2023-06-20T12:20:51Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '4'
keyword:
- PCB design and layout
- Mesh geometry models
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: 'PCBend: Light up your 3D shapes with foldable circuit boards'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '11442'
abstract:
- lang: eng
text: "Enabling additive manufacturing to employ a wide range of novel, functional
materials can be a major boost to this technology. However, making such materials
printable requires painstaking trial-and-error by an expert operator,\r\nas they
typically tend to exhibit peculiar rheological or hysteresis properties. Even
in the case of successfully finding the process parameters, there is no guarantee
of print-to-print consistency due to material differences between batches. These
challenges make closed-loop feedback an attractive option where the process parameters
are adjusted on-the-fly. There are several challenges for designing an efficient
controller: the deposition parameters are complex and highly coupled, artifacts
occur after long time horizons, simulating the deposition is computationally costly,
and learning on hardware is intractable. In this work, we demonstrate the feasibility
of learning a closed-loop control policy for additive manufacturing using reinforcement
learning. We show that approximate, but efficient, numerical simulation is\r\nsufficient
as long as it allows learning the behavioral patterns of deposition that translate
to real-world experiences. In combination with reinforcement learning, our model
can be used to discover control policies that outperform\r\nbaseline controllers.
Furthermore, the recovered policies have a minimal sim-to-real gap. We showcase
this by applying our control policy in-vivo on a single-layer, direct ink writing
printer. "
acknowledgement: "This work is graciously supported by the following grant agencies:
FWF Lise Meitner (Grant M 3319), SNSF (Grant 200502), ERC Starting Grant (MATERIALIZABLE-715767),
NSF (Grant IIS-181507).\r\n"
article_number: '112'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Michael
full_name: Piovarci, Michael
id: 62E473F4-5C99-11EA-A40E-AF823DDC885E
last_name: Piovarci
- first_name: Michael
full_name: Foshey, Michael
last_name: Foshey
- first_name: Jie
full_name: Xu, Jie
last_name: Xu
- first_name: Timothy
full_name: Erps, Timothy
last_name: Erps
- first_name: Vahid
full_name: Babaei, Vahid
last_name: Babaei
- first_name: Piotr
full_name: Didyk, Piotr
last_name: Didyk
- first_name: Szymon
full_name: Rusinkiewicz, Szymon
last_name: Rusinkiewicz
- first_name: Wojciech
full_name: Matusik, Wojciech
last_name: Matusik
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Piovarci M, Foshey M, Xu J, et al. Closed-loop control of direct ink writing
via reinforcement learning. ACM Transactions on Graphics. 2022;41(4). doi:10.1145/3528223.3530144
apa: Piovarci, M., Foshey, M., Xu, J., Erps, T., Babaei, V., Didyk, P., … Bickel,
B. (2022). Closed-loop control of direct ink writing via reinforcement learning.
ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3528223.3530144
chicago: Piovarci, Michael, Michael Foshey, Jie Xu, Timothy Erps, Vahid Babaei,
Piotr Didyk, Szymon Rusinkiewicz, Wojciech Matusik, and Bernd Bickel. “Closed-Loop
Control of Direct Ink Writing via Reinforcement Learning.” ACM Transactions
on Graphics. Association for Computing Machinery, 2022. https://doi.org/10.1145/3528223.3530144.
ieee: M. Piovarci et al., “Closed-loop control of direct ink writing via
reinforcement learning,” ACM Transactions on Graphics, vol. 41, no. 4.
Association for Computing Machinery, 2022.
ista: Piovarci M, Foshey M, Xu J, Erps T, Babaei V, Didyk P, Rusinkiewicz S, Matusik
W, Bickel B. 2022. Closed-loop control of direct ink writing via reinforcement
learning. ACM Transactions on Graphics. 41(4), 112.
mla: Piovarci, Michael, et al. “Closed-Loop Control of Direct Ink Writing via Reinforcement
Learning.” ACM Transactions on Graphics, vol. 41, no. 4, 112, Association
for Computing Machinery, 2022, doi:10.1145/3528223.3530144.
short: M. Piovarci, M. Foshey, J. Xu, T. Erps, V. Babaei, P. Didyk, S. Rusinkiewicz,
W. Matusik, B. Bickel, ACM Transactions on Graphics 41 (2022).
date_created: 2022-06-10T06:41:47Z
date_published: 2022-06-01T00:00:00Z
date_updated: 2023-05-31T12:38:21Z
day: '01'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3528223.3530144
ec_funded: 1
external_id:
arxiv:
- '2201.11819'
file:
- access_level: open_access
checksum: 27f6fe41c6ff84d50445cc9b0176d45b
content_type: application/pdf
creator: dernst
date_created: 2022-06-28T08:32:58Z
date_updated: 2022-06-28T08:32:58Z
file_id: '11467'
file_name: 2022_ACM_acceptedversion_Piovarci.pdf
file_size: 33994829
relation: main_file
success: 1
file_date_updated: 2022-06-28T08:32:58Z
has_accepted_license: '1'
intvolume: ' 41'
issue: '4'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Submitted Version
project:
- _id: eb901961-77a9-11ec-83b8-f5c883a62027
grant_number: M03319
name: Perception-Aware Appearance Fabrication
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
link:
- description: News on ISTA website
relation: press_release
url: https://ista.ac.at/en/news/machine-learning-3d-printing-fluids/
status: public
title: Closed-loop control of direct ink writing via reinforcement learning
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 41
year: '2022'
...
---
_id: '11735'
abstract:
- lang: eng
text: "Interlocking puzzles are intriguing geometric games where the puzzle pieces
are held together based on their geometric arrangement, preventing the puzzle
from falling apart. High-level-of-difficulty, or simply high-level, interlocking
puzzles are a subclass of interlocking puzzles that require multiple moves to
take out the first subassembly from the puzzle. Solving a high-level interlocking
puzzle is a challenging task since one has to explore many different configurations
of the puzzle pieces until reaching a configuration where the first subassembly
can be taken out. Designing a high-level interlocking puzzle with a user-specified
level of difficulty is even harder since the puzzle pieces have to be interlocking
in all the configurations before the first subassembly is taken out.\r\n\r\nIn
this paper, we present a computational approach to design high-level interlocking
puzzles. The core idea is to represent all possible configurations of an interlocking
puzzle as well as transitions among these configurations using a rooted, undirected
graph called a disassembly graph and leverage this graph to find a disassembly
plan that requires a minimal number of moves to take out the first subassembly
from the puzzle. At the design stage, our algorithm iteratively constructs the
geometry of each puzzle piece to expand the disassembly graph incrementally, aiming
to achieve a user-specified level of difficulty. We show that our approach allows
efficient generation of high-level interlocking puzzles of various shape complexities,
including new solutions not attainable by state-of-the-art approaches."
acknowledgement: "We thank the reviewers for the valuable comments, David Gontier
for sharing the source code of the baseline design approach, Christian Hafner for
proofreading the paper, Keenan Crane for the 3D model of Cow, and Thingiverse for
the 3D models of Moai and Owl. This work was supported by the SUTD Start-up Research
Grant (Number: SRG ISTD 2019 148), the Swiss National Science Foundation (NCCR Digital
Fabrication Agreement #51NF40-141853), and\r\nthe European Research Council (ERC)
under the European Union’s Horizon 2020 research and innovation programme (Grant
Agreement No 715767 – MATERIALIZABLE)."
article_number: '150'
article_processing_charge: No
article_type: original
author:
- first_name: Rulin
full_name: Chen, Rulin
last_name: Chen
- first_name: Ziqi
full_name: Wang, Ziqi
last_name: Wang
- first_name: Peng
full_name: Song, Peng
last_name: Song
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Chen R, Wang Z, Song P, Bickel B. Computational design of high-level interlocking
puzzles. ACM Transactions on Graphics. 2022;41(4). doi:10.1145/3528223.3530071
apa: Chen, R., Wang, Z., Song, P., & Bickel, B. (2022). Computational design
of high-level interlocking puzzles. ACM Transactions on Graphics. Association
for Computing Machinery. https://doi.org/10.1145/3528223.3530071
chicago: Chen, Rulin, Ziqi Wang, Peng Song, and Bernd Bickel. “Computational Design
of High-Level Interlocking Puzzles.” ACM Transactions on Graphics. Association
for Computing Machinery, 2022. https://doi.org/10.1145/3528223.3530071.
ieee: R. Chen, Z. Wang, P. Song, and B. Bickel, “Computational design of high-level
interlocking puzzles,” ACM Transactions on Graphics, vol. 41, no. 4. Association
for Computing Machinery, 2022.
ista: Chen R, Wang Z, Song P, Bickel B. 2022. Computational design of high-level
interlocking puzzles. ACM Transactions on Graphics. 41(4), 150.
mla: Chen, Rulin, et al. “Computational Design of High-Level Interlocking Puzzles.”
ACM Transactions on Graphics, vol. 41, no. 4, 150, Association for Computing
Machinery, 2022, doi:10.1145/3528223.3530071.
short: R. Chen, Z. Wang, P. Song, B. Bickel, ACM Transactions on Graphics 41 (2022).
date_created: 2022-08-07T22:01:57Z
date_published: 2022-07-22T00:00:00Z
date_updated: 2023-08-03T13:21:22Z
day: '22'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3528223.3530071
ec_funded: 1
external_id:
isi:
- '000830989200018'
file:
- access_level: open_access
checksum: 0b51651be45b1b33f2072bd5d2686c69
content_type: application/pdf
creator: bbickel
date_created: 2022-08-28T07:56:19Z
date_updated: 2022-08-28T07:56:19Z
file_id: '11992'
file_name: Chen-2022-High-LevelPuzzle_authorVersion.pdf
file_size: 16896871
relation: main_file
success: 1
file_date_updated: 2022-08-28T07:56:19Z
has_accepted_license: '1'
intvolume: ' 41'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
link:
- description: News on ISTA website
relation: press_release
url: https://ista.ac.at/en/news/unlocking-interlocking-riddles/
scopus_import: '1'
status: public
title: Computational design of high-level interlocking puzzles
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 41
year: '2022'
...
---
_id: '11736'
abstract:
- lang: eng
text: "This paper introduces a methodology for inverse-modeling of yarn-level mechanics
of cloth, based on the mechanical response of fabrics in the real world. We compiled
a database from physical tests of several different knitted fabrics used in the
textile industry. These data span different types of complex knit patterns, yarn
compositions, and fabric finishes, and the results demonstrate diverse physical
properties like stiffness, nonlinearity, and anisotropy.\r\n\r\nWe then develop
a system for approximating these mechanical responses with yarn-level cloth simulation.
To do so, we introduce an efficient pipeline for converting between fabric-level
data and yarn-level simulation, including a novel swatch-level approximation for
speeding up computation, and some small-but-necessary extensions to yarn-level
models used in computer graphics. The dataset used for this paper can be found
at http://mslab.es/projects/YarnLevelFabrics."
acknowledged_ssus:
- _id: ScienComp
acknowledgement: We wish to thank the anonymous reviewers for their helpful comments.
To develop this project, we were helped by many people both at Under Armour (Clay
Dean, Randall Harward, Kyle Blakely, Craig Simile, Michael Seiz, Brooke Malone,
Brittainy McFarland, Emilie Phan, Lindsey Kern, Courtney Oswald, Haley Barkley,
Bob Chin, Adam Bayer, Connie Kwok, Marielle Newman, Nick Pence, Allison Hicks, Allison
White, Candace Rubenstein, Jeremy Stangland, Fred Fagergren, Michael Mazzoleni,
Nathaniel Berry, Manuel Frank) and SEDDI (Gabriel Cirio, Alejandro Rodríguez, Sofía
Dominguez, Alicia Nicas, Elena Garcés, Daniel Rodríguez, David Pascual, Manuel Godoy,
Sergio Suja, Sergio Ruiz, Roberto Condori, Alberto Martín, Graham Sullivan). We
also thank the members of the Visual Computing Group at IST Austria and the Multimodal
Simulation Lab at URJC for their feedback. This research was supported by the Scientific
Service Units (SSU) of IST Austria through resources provided by Scientific Computing,
and it was funded in part by the European Research Council (ERC Consolidator Grant
772738 TouchDesign).
article_number: '65'
article_processing_charge: No
article_type: original
author:
- first_name: Georg
full_name: Sperl, Georg
id: 4DD40360-F248-11E8-B48F-1D18A9856A87
last_name: Sperl
- first_name: Rosa M.
full_name: Sánchez-Banderas, Rosa M.
last_name: Sánchez-Banderas
- first_name: Manwen
full_name: Li, Manwen
last_name: Li
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
- first_name: Miguel A.
full_name: Otaduy, Miguel A.
last_name: Otaduy
citation:
ama: Sperl G, Sánchez-Banderas RM, Li M, Wojtan C, Otaduy MA. Estimation of yarn-level
simulation models for production fabrics. ACM Transactions on Graphics.
2022;41(4). doi:10.1145/3528223.3530167
apa: Sperl, G., Sánchez-Banderas, R. M., Li, M., Wojtan, C., & Otaduy, M. A.
(2022). Estimation of yarn-level simulation models for production fabrics. ACM
Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3528223.3530167
chicago: Sperl, Georg, Rosa M. Sánchez-Banderas, Manwen Li, Chris Wojtan, and Miguel
A. Otaduy. “Estimation of Yarn-Level Simulation Models for Production Fabrics.”
ACM Transactions on Graphics. Association for Computing Machinery, 2022.
https://doi.org/10.1145/3528223.3530167.
ieee: G. Sperl, R. M. Sánchez-Banderas, M. Li, C. Wojtan, and M. A. Otaduy, “Estimation
of yarn-level simulation models for production fabrics,” ACM Transactions on
Graphics, vol. 41, no. 4. Association for Computing Machinery, 2022.
ista: Sperl G, Sánchez-Banderas RM, Li M, Wojtan C, Otaduy MA. 2022. Estimation
of yarn-level simulation models for production fabrics. ACM Transactions on Graphics.
41(4), 65.
mla: Sperl, Georg, et al. “Estimation of Yarn-Level Simulation Models for Production
Fabrics.” ACM Transactions on Graphics, vol. 41, no. 4, 65, Association
for Computing Machinery, 2022, doi:10.1145/3528223.3530167.
short: G. Sperl, R.M. Sánchez-Banderas, M. Li, C. Wojtan, M.A. Otaduy, ACM Transactions
on Graphics 41 (2022).
date_created: 2022-08-07T22:01:58Z
date_published: 2022-07-22T00:00:00Z
date_updated: 2023-08-03T12:38:30Z
day: '22'
department:
- _id: ChWo
doi: 10.1145/3528223.3530167
external_id:
isi:
- '000830989200114'
intvolume: ' 41'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1145/3528223.3530167
month: '07'
oa: 1
oa_version: Published Version
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
link:
- description: News on the ISTA website
relation: press_release
url: https://ista.ac.at/en/news/digital-yarn-real-socks/
record:
- id: '12358'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Estimation of yarn-level simulation models for production fabrics
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 41
year: '2022'
...
---
_id: '12431'
abstract:
- lang: eng
text: This paper presents a new representation of curve dynamics, with applications
to vortex filaments in fluid dynamics. Instead of representing these filaments
with explicit curve geometry and Lagrangian equations of motion, we represent
curves implicitly with a new co-dimensional 2 level set description. Our implicit
representation admits several redundant mathematical degrees of freedom in both
the configuration and the dynamics of the curves, which can be tailored specifically
to improve numerical robustness, in contrast to naive approaches for implicit
curve dynamics that suffer from overwhelming numerical stability problems. Furthermore,
we note how these hidden degrees of freedom perfectly map to a Clebsch representation
in fluid dynamics. Motivated by these observations, we introduce untwisted level
set functions and non-swirling dynamics which successfully regularize sources
of numerical instability, particularly in the twisting modes around curve filaments.
A consequence is a novel simulation method which produces stable dynamics for
large numbers of interacting vortex filaments and effortlessly handles topological
changes and re-connection events.
acknowledgement: We thank the visual computing group at IST Austria for their valuable
discussions and feedback. Houdini Education licenses were provided by SideFX software.
This project was funded in part by the European Research Council (ERC Consolidator
Grant 101045083 CoDiNA).
article_number: '241'
article_processing_charge: No
article_type: original
author:
- first_name: Sadashige
full_name: Ishida, Sadashige
id: 6F7C4B96-A8E9-11E9-A7CA-09ECE5697425
last_name: Ishida
- first_name: Christopher J
full_name: Wojtan, Christopher J
id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
last_name: Wojtan
orcid: 0000-0001-6646-5546
- first_name: Albert
full_name: Chern, Albert
last_name: Chern
citation:
ama: Ishida S, Wojtan C, Chern A. Hidden degrees of freedom in implicit vortex filaments.
ACM Transactions on Graphics. 2022;41(6). doi:10.1145/3550454.3555459
apa: Ishida, S., Wojtan, C., & Chern, A. (2022). Hidden degrees of freedom in
implicit vortex filaments. ACM Transactions on Graphics. Association for
Computing Machinery. https://doi.org/10.1145/3550454.3555459
chicago: Ishida, Sadashige, Chris Wojtan, and Albert Chern. “Hidden Degrees of Freedom
in Implicit Vortex Filaments.” ACM Transactions on Graphics. Association
for Computing Machinery, 2022. https://doi.org/10.1145/3550454.3555459.
ieee: S. Ishida, C. Wojtan, and A. Chern, “Hidden degrees of freedom in implicit
vortex filaments,” ACM Transactions on Graphics, vol. 41, no. 6. Association
for Computing Machinery, 2022.
ista: Ishida S, Wojtan C, Chern A. 2022. Hidden degrees of freedom in implicit vortex
filaments. ACM Transactions on Graphics. 41(6), 241.
mla: Ishida, Sadashige, et al. “Hidden Degrees of Freedom in Implicit Vortex Filaments.”
ACM Transactions on Graphics, vol. 41, no. 6, 241, Association for Computing
Machinery, 2022, doi:10.1145/3550454.3555459.
short: S. Ishida, C. Wojtan, A. Chern, ACM Transactions on Graphics 41 (2022).
date_created: 2023-01-29T23:00:59Z
date_published: 2022-12-01T00:00:00Z
date_updated: 2023-08-04T09:37:23Z
day: '01'
ddc:
- '000'
department:
- _id: ChWo
doi: 10.1145/3550454.3555459
external_id:
isi:
- '000891651900061'
file:
- access_level: open_access
checksum: a2fba257fdefe0e747182be6c0f7c70c
content_type: application/pdf
creator: dernst
date_created: 2023-01-30T07:15:48Z
date_updated: 2023-01-30T07:15:48Z
file_id: '12433'
file_name: 2022_ACM_Ishida.pdf
file_size: 15551202
relation: main_file
success: 1
file_date_updated: 2023-01-30T07:15:48Z
has_accepted_license: '1'
intvolume: ' 41'
isi: 1
issue: '6'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088
grant_number: '101045083'
name: Computational Discovery of Numerical Algorithms for Animation and Simulation
of Natural Phenomena
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Hidden degrees of freedom in implicit vortex filaments
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 41
year: '2022'
...
---
_id: '9376'
abstract:
- lang: eng
text: This paper presents a method for designing planar multistable compliant structures.
Given a sequence of desired stable states and the corresponding poses of the structure,
we identify the topology and geometric realization of a mechanism—consisting of
bars and joints—that is able to physically reproduce the desired multistable behavior.
In order to solve this problem efficiently, we build on insights from minimally
rigid graph theory to identify simple but effective topologies for the mechanism.
We then optimize its geometric parameters, such as joint positions and bar lengths,
to obtain correct transitions between the given poses. Simultaneously, we ensure
adequate stability of each pose based on an effective approximate error metric
related to the elastic energy Hessian of the bars in the mechanism. As demonstrated
by our results, we obtain functional multistable mechanisms of manageable complexity
that can be fabricated using 3D printing. Further, we evaluated the effectiveness
of our method on a large number of examples in the simulation and fabricated several
physical prototypes.
acknowledged_ssus:
- _id: M-Shop
acknowledgement: 'We would like to thank everyone who contributed to this paper, the
authors of artworks for all the examples, including @macrovec-tor_official and Wikimedia
for the FLAG semaphore, and @pikisuper-star for the FIGURINE. The photos of iconic
poses in the teaser were supplied by (from left to right): Mike Hewitt/Olympics
Day 8 - Athletics/Gettty Images, Oneinchpunch/Basketball player training on acourt
in New york city/Shutterstock, and Andrew Redington/TigerWoods/Getty Images. We
also want to express our gratitude to Christian Hafner for insightful discussions,
the IST Austria machine shop SSU, all proof-readers, and anonymous reviewers. This
project has received funding from the European Union’s Horizon 2020 research and
innovation programme, under the Marie Skłodowska-Curie grant agreement No 642841
(DISTRO), and under the European Research Council grant agreement No 715767 (MATERIALIZABLE).'
article_number: '186'
article_processing_charge: No
article_type: original
author:
- first_name: Ran
full_name: Zhang, Ran
id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87
last_name: Zhang
orcid: 0000-0002-3808-281X
- first_name: Thomas
full_name: Auzinger, Thomas
id: 4718F954-F248-11E8-B48F-1D18A9856A87
last_name: Auzinger
orcid: 0000-0002-1546-3265
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Zhang R, Auzinger T, Bickel B. Computational design of planar multistable compliant
structures. ACM Transactions on Graphics. 2021;40(5). doi:10.1145/3453477
apa: Zhang, R., Auzinger, T., & Bickel, B. (2021). Computational design of planar
multistable compliant structures. ACM Transactions on Graphics. Association
for Computing Machinery. https://doi.org/10.1145/3453477
chicago: Zhang, Ran, Thomas Auzinger, and Bernd Bickel. “Computational Design of
Planar Multistable Compliant Structures.” ACM Transactions on Graphics.
Association for Computing Machinery, 2021. https://doi.org/10.1145/3453477.
ieee: R. Zhang, T. Auzinger, and B. Bickel, “Computational design of planar multistable
compliant structures,” ACM Transactions on Graphics, vol. 40, no. 5. Association
for Computing Machinery, 2021.
ista: Zhang R, Auzinger T, Bickel B. 2021. Computational design of planar multistable
compliant structures. ACM Transactions on Graphics. 40(5), 186.
mla: Zhang, Ran, et al. “Computational Design of Planar Multistable Compliant Structures.”
ACM Transactions on Graphics, vol. 40, no. 5, 186, Association for Computing
Machinery, 2021, doi:10.1145/3453477.
short: R. Zhang, T. Auzinger, B. Bickel, ACM Transactions on Graphics 40 (2021).
date_created: 2021-05-08T17:37:08Z
date_published: 2021-10-08T00:00:00Z
date_updated: 2023-08-08T13:31:38Z
day: '08'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3453477
ec_funded: 1
external_id:
isi:
- '000752079300003'
file:
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checksum: 8564b3118457d4c8939a8ef2b1a2f16c
content_type: application/pdf
creator: bbickel
date_created: 2021-05-08T17:36:59Z
date_updated: 2021-05-08T17:36:59Z
file_id: '9377'
file_name: Multistable-authorversion.pdf
file_size: 18926557
relation: main_file
- access_level: open_access
checksum: 3b6e874e30bfa1bfc3ad3498710145a1
content_type: video/mp4
creator: bbickel
date_created: 2021-05-08T17:38:22Z
date_updated: 2021-05-08T17:38:22Z
file_id: '9378'
file_name: multistable-video.mp4
file_size: 76542901
relation: main_file
success: 1
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checksum: 20dc3bc42e1a912a5b0247c116772098
content_type: application/pdf
creator: bbickel
date_created: 2021-12-17T08:13:51Z
date_updated: 2021-12-17T08:13:51Z
description: This document provides additional results and analyzes the robustness
and limitations of our approach.
file_id: '10562'
file_name: multistable-supplementary material.pdf
file_size: 3367072
relation: supplementary_material
title: Supplementary Material for “Computational Design of Planar Multistable Compliant
Structures”
file_date_updated: 2021-12-17T08:13:51Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '5'
keyword:
- multistability
- mechanism
- computational design
- rigidity
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 2508E324-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '642841'
name: Distributed 3D Object Design
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: Computational design of planar multistable compliant structures
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 40
year: '2021'
...
---
_id: '10184'
abstract:
- lang: eng
text: "We introduce a novel technique to automatically decompose an input object’s
volume into a set of parts that can be represented by two opposite height fields.
Such decomposition enables the manufacturing of individual parts using two-piece
reusable rigid molds. Our decomposition strategy relies on a new energy formulation
that utilizes a pre-computed signal on the mesh volume representing the accessibility
for a predefined set of extraction directions. Thanks to this novel formulation,
our method allows for efficient optimization of a fabrication-aware partitioning
of volumes in a completely\r\nautomatic way. We demonstrate the efficacy of our
approach by generating valid volume partitionings for a wide range of complex
objects and physically reproducing several of them."
acknowledgement: 'The authors thank Marco Callieri for all his precious help with
the resin casts. The models used in the paper are courtesy of the Stanford 3D Scanning
Repository, the AIM@SHAPE Shape Repository, and Thingi10K Repository. The research
was partially funded by the European Research Council (ERC) MATERIALIZABLE: Intelligent
fabrication-oriented computational design and modeling (grant no. 715767).'
article_number: '272'
article_processing_charge: No
article_type: original
author:
- first_name: Thomas
full_name: Alderighi, Thomas
last_name: Alderighi
- first_name: Luigi
full_name: Malomo, Luigi
last_name: Malomo
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Paolo
full_name: Cignoni, Paolo
last_name: Cignoni
- first_name: Nico
full_name: Pietroni, Nico
last_name: Pietroni
citation:
ama: Alderighi T, Malomo L, Bickel B, Cignoni P, Pietroni N. Volume decomposition
for two-piece rigid casting. ACM Transactions on Graphics. 2021;40(6).
doi:10.1145/3478513.3480555
apa: Alderighi, T., Malomo, L., Bickel, B., Cignoni, P., & Pietroni, N. (2021).
Volume decomposition for two-piece rigid casting. ACM Transactions on Graphics.
Association for Computing Machinery. https://doi.org/10.1145/3478513.3480555
chicago: Alderighi, Thomas, Luigi Malomo, Bernd Bickel, Paolo Cignoni, and Nico
Pietroni. “Volume Decomposition for Two-Piece Rigid Casting.” ACM Transactions
on Graphics. Association for Computing Machinery, 2021. https://doi.org/10.1145/3478513.3480555.
ieee: T. Alderighi, L. Malomo, B. Bickel, P. Cignoni, and N. Pietroni, “Volume decomposition
for two-piece rigid casting,” ACM Transactions on Graphics, vol. 40, no.
6. Association for Computing Machinery, 2021.
ista: Alderighi T, Malomo L, Bickel B, Cignoni P, Pietroni N. 2021. Volume decomposition
for two-piece rigid casting. ACM Transactions on Graphics. 40(6), 272.
mla: Alderighi, Thomas, et al. “Volume Decomposition for Two-Piece Rigid Casting.”
ACM Transactions on Graphics, vol. 40, no. 6, 272, Association for Computing
Machinery, 2021, doi:10.1145/3478513.3480555.
short: T. Alderighi, L. Malomo, B. Bickel, P. Cignoni, N. Pietroni, ACM Transactions
on Graphics 40 (2021).
date_created: 2021-10-27T07:08:19Z
date_published: 2021-12-01T00:00:00Z
date_updated: 2024-02-28T12:52:48Z
day: '01'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3478513.3480555
ec_funded: 1
external_id:
isi:
- '000729846700077'
file:
- access_level: open_access
checksum: 384ece7a9ad1026787ba9560b04336d5
content_type: application/pdf
creator: bbickel
date_created: 2021-10-27T07:08:07Z
date_updated: 2021-10-27T07:08:07Z
file_id: '10185'
file_name: rigidmolds-authorversion.pdf
file_size: 107708317
relation: main_file
file_date_updated: 2021-10-27T07:08:07Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://vcg.isti.cnr.it/Publications/2021/AMBCP21
month: '12'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- '1557-7368 '
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
status: public
title: Volume decomposition for two-piece rigid casting
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 40
year: '2021'
...
---
_id: '9817'
abstract:
- lang: eng
text: Elastic bending of initially flat slender elements allows the realization
and economic fabrication of intriguing curved shapes. In this work, we derive
an intuitive but rigorous geometric characterization of the design space of plane
elastic rods with variable stiffness. It enables designers to determine which
shapes are physically viable with active bending by visual inspection alone. Building
on these insights, we propose a method for efficiently designing the geometry
of a flat elastic rod that realizes a target equilibrium curve, which only requires
solving a linear program. We implement this method in an interactive computational
design tool that gives feedback about the feasibility of a design, and computes
the geometry of the structural elements necessary to realize it within an instant.
The tool also offers an iterative optimization routine that improves the fabricability
of a model while modifying it as little as possible. In addition, we use our geometric
characterization to derive an algorithm for analyzing and recovering the stability
of elastic curves that would otherwise snap out of their unstable equilibrium
shapes by buckling. We show the efficacy of our approach by designing and manufacturing
several physical models that are assembled from flat elements.
acknowledgement: "We thank the anonymous reviewers for their generous feedback, and
Michal Piovarči for his help in producing the supplemental video. This project has
received funding from the European Research Council (ERC) under the European Union’s
Horizon 2020 research and innovation programme (grant agreement No 715767).\r\n"
article_number: '126'
article_processing_charge: No
article_type: original
author:
- first_name: Christian
full_name: Hafner, Christian
id: 400429CC-F248-11E8-B48F-1D18A9856A87
last_name: Hafner
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Hafner C, Bickel B. The design space of plane elastic curves. ACM Transactions
on Graphics. 2021;40(4). doi:10.1145/3450626.3459800
apa: 'Hafner, C., & Bickel, B. (2021). The design space of plane elastic curves.
ACM Transactions on Graphics. Virtual: Association for Computing Machinery.
https://doi.org/10.1145/3450626.3459800'
chicago: Hafner, Christian, and Bernd Bickel. “The Design Space of Plane Elastic
Curves.” ACM Transactions on Graphics. Association for Computing Machinery,
2021. https://doi.org/10.1145/3450626.3459800.
ieee: C. Hafner and B. Bickel, “The design space of plane elastic curves,” ACM
Transactions on Graphics, vol. 40, no. 4. Association for Computing Machinery,
2021.
ista: Hafner C, Bickel B. 2021. The design space of plane elastic curves. ACM Transactions
on Graphics. 40(4), 126.
mla: Hafner, Christian, and Bernd Bickel. “The Design Space of Plane Elastic Curves.”
ACM Transactions on Graphics, vol. 40, no. 4, 126, Association for Computing
Machinery, 2021, doi:10.1145/3450626.3459800.
short: C. Hafner, B. Bickel, ACM Transactions on Graphics 40 (2021).
conference:
end_date: 2021-08-13
location: Virtual
name: 'SIGGRAF: Special Interest Group on Computer Graphics and Interactive Techniques'
start_date: 2021-08-09
date_created: 2021-08-08T22:01:26Z
date_published: 2021-07-19T00:00:00Z
date_updated: 2024-03-25T23:30:26Z
day: '19'
ddc:
- '516'
department:
- _id: BeBi
doi: 10.1145/3450626.3459800
ec_funded: 1
external_id:
isi:
- '000674930900091'
file:
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checksum: 7e5d08ce46b0451b3102eacd3d00f85f
content_type: application/pdf
creator: chafner
date_created: 2021-10-18T10:42:15Z
date_updated: 2021-10-18T10:42:15Z
file_id: '10150'
file_name: elastic-curves-paper.pdf
file_size: 17064290
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success: 1
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content_type: application/pdf
creator: chafner
date_created: 2021-10-18T10:42:22Z
date_updated: 2021-10-18T10:42:22Z
file_id: '10151'
file_name: elastic-curves-supp.pdf
file_size: 547156
relation: supplementary_material
file_date_updated: 2021-10-18T10:42:22Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '4'
keyword:
- Computing methodologies
- shape modeling
- modeling and simulation
- theory of computation
- computational geometry
- mathematics of computing
- mathematical optimization
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
link:
- description: News on IST Website
relation: press_release
url: https://ist.ac.at/en/news/designing-with-elastic-structures/
record:
- id: '12897'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: The design space of plane elastic curves
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 40
year: '2021'
...
---
_id: '8562'
abstract:
- lang: eng
text: "Cold bent glass is a promising and cost-efficient method for realizing doubly
curved glass facades. They are produced by attaching planar glass sheets to curved
frames and require keeping the occurring stress within safe limits.\r\nHowever,
it is very challenging to navigate the design space of cold bent glass panels
due to the fragility of the material, which impedes the form-finding for practically
feasible and aesthetically pleasing cold bent glass facades. We propose an interactive,
data-driven approach for designing cold bent glass facades that can be seamlessly
integrated into a typical architectural design pipeline. Our method allows non-expert
users to interactively edit a parametric surface while providing real-time feedback
on the deformed shape and maximum stress of cold bent glass panels. Designs are
automatically refined to minimize several fairness criteria while maximal stresses
are kept within glass limits. We achieve interactive frame rates by using a differentiable
Mixture Density Network trained from more than a million simulations. Given a
curved boundary, our regression model is capable of handling multistable\r\nconfigurations
and accurately predicting the equilibrium shape of the panel and its corresponding
maximal stress. We show predictions are highly accurate and validate our results
with a physical realization of a cold bent glass surface."
acknowledged_ssus:
- _id: ScienComp
acknowledgement: "We thank IST Austria’s Scientific Computing team for their support,
Corinna Datsiou and Sophie Pennetier for their expert input on the practical applications
of cold bent glass, and Zaha Hadid Architects and Waagner Biro for providing the
architectural datasets. Photo of Fondation Louis Vuitton by Francisco Anzola / CC
BY 2.0 / cropped.\r\nPhoto of Opus by Danica O. Kus. This project has received funding
from the European Union’s\r\nHorizon 2020 research and innovation program under
grant agreement No 675789 - Algebraic Representations in Computer-Aided Design for
complEx Shapes (ARCADES), from the European Research Council (ERC) under grant agreement
No 715767 - MATERIALIZABLE: Intelligent fabrication-oriented Computational Design
and Modeling, and SFB-Transregio “Discretization in Geometry and Dynamics” through
grant I 2978 of the Austrian Science Fund (FWF). F. Rist and K. Gavriil have been
partially supported by KAUST baseline funding."
article_number: '208'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Konstantinos
full_name: Gavriil, Konstantinos
last_name: Gavriil
- first_name: Ruslan
full_name: Guseinov, Ruslan
id: 3AB45EE2-F248-11E8-B48F-1D18A9856A87
last_name: Guseinov
orcid: 0000-0001-9819-5077
- first_name: Jesus
full_name: Perez Rodriguez, Jesus
id: 2DC83906-F248-11E8-B48F-1D18A9856A87
last_name: Perez Rodriguez
- first_name: Davide
full_name: Pellis, Davide
last_name: Pellis
- first_name: Paul M
full_name: Henderson, Paul M
id: 13C09E74-18D9-11E9-8878-32CFE5697425
last_name: Henderson
orcid: 0000-0002-5198-7445
- first_name: Florian
full_name: Rist, Florian
last_name: Rist
- first_name: Helmut
full_name: Pottmann, Helmut
last_name: Pottmann
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: Gavriil K, Guseinov R, Perez Rodriguez J, et al. Computational design of cold
bent glass façades. ACM Transactions on Graphics. 2020;39(6). doi:10.1145/3414685.3417843
apa: Gavriil, K., Guseinov, R., Perez Rodriguez, J., Pellis, D., Henderson, P. M.,
Rist, F., … Bickel, B. (2020). Computational design of cold bent glass façades.
ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3414685.3417843
chicago: Gavriil, Konstantinos, Ruslan Guseinov, Jesus Perez Rodriguez, Davide Pellis,
Paul M Henderson, Florian Rist, Helmut Pottmann, and Bernd Bickel. “Computational
Design of Cold Bent Glass Façades.” ACM Transactions on Graphics. Association
for Computing Machinery, 2020. https://doi.org/10.1145/3414685.3417843.
ieee: K. Gavriil et al., “Computational design of cold bent glass façades,”
ACM Transactions on Graphics, vol. 39, no. 6. Association for Computing
Machinery, 2020.
ista: Gavriil K, Guseinov R, Perez Rodriguez J, Pellis D, Henderson PM, Rist F,
Pottmann H, Bickel B. 2020. Computational design of cold bent glass façades. ACM
Transactions on Graphics. 39(6), 208.
mla: Gavriil, Konstantinos, et al. “Computational Design of Cold Bent Glass Façades.”
ACM Transactions on Graphics, vol. 39, no. 6, 208, Association for Computing
Machinery, 2020, doi:10.1145/3414685.3417843.
short: K. Gavriil, R. Guseinov, J. Perez Rodriguez, D. Pellis, P.M. Henderson, F.
Rist, H. Pottmann, B. Bickel, ACM Transactions on Graphics 39 (2020).
date_created: 2020-09-23T11:30:02Z
date_published: 2020-11-26T00:00:00Z
date_updated: 2024-02-21T12:43:21Z
day: '26'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3414685.3417843
ec_funded: 1
external_id:
arxiv:
- '2009.03667'
isi:
- '000595589100048'
file:
- access_level: open_access
checksum: c7f67717ad74e670b7daeae732abe151
content_type: application/pdf
creator: bbickel
date_created: 2023-05-23T20:54:43Z
date_updated: 2023-05-23T20:54:43Z
file_id: '13084'
file_name: coldglass.pdf
file_size: 28964641
relation: main_file
success: 1
file_date_updated: 2023-05-23T20:54:43Z
has_accepted_license: '1'
intvolume: ' 39'
isi: 1
issue: '6'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/bend-dont-break/
record:
- id: '8366'
relation: dissertation_contains
status: public
- id: '8761'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Computational design of cold bent glass façades
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 39
year: '2020'
...
---
_id: '6650'
abstract:
- lang: eng
text: We propose a novel technique for the automatic design of molds to cast highly
complex shapes. The technique generates composite, two-piece molds. Each mold
piece is made up of a hard plastic shell and a flexible silicone part. Thanks
to the thin, soft, and smartly shaped silicone part, which is kept in place by
a hard plastic shell, we can cast objects of unprecedented complexity. An innovative
algorithm based on a volumetric analysis defines the layout of the internal cuts
in the silicone mold part. Our approach can robustly handle thin protruding features
and intertwined topologies that have caused previous methods to fail. We compare
our results with state of the art techniques, and we demonstrate the casting of
shapes with extremely complex geometry.
article_number: '110'
article_processing_charge: No
author:
- first_name: Thomas
full_name: Alderighi, Thomas
last_name: Alderighi
- first_name: Luigi
full_name: Malomo, Luigi
last_name: Malomo
- first_name: Daniela
full_name: Giorgi, Daniela
last_name: Giorgi
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Paolo
full_name: Cignoni, Paolo
last_name: Cignoni
- first_name: Nico
full_name: Pietroni, Nico
last_name: Pietroni
citation:
ama: Alderighi T, Malomo L, Giorgi D, Bickel B, Cignoni P, Pietroni N. Volume-aware
design of composite molds. ACM Transactions on Graphics. 2019;38(4). doi:10.1145/3306346.3322981
apa: Alderighi, T., Malomo, L., Giorgi, D., Bickel, B., Cignoni, P., & Pietroni,
N. (2019). Volume-aware design of composite molds. ACM Transactions on Graphics.
ACM. https://doi.org/10.1145/3306346.3322981
chicago: Alderighi, Thomas, Luigi Malomo, Daniela Giorgi, Bernd Bickel, Paolo Cignoni,
and Nico Pietroni. “Volume-Aware Design of Composite Molds.” ACM Transactions
on Graphics. ACM, 2019. https://doi.org/10.1145/3306346.3322981.
ieee: T. Alderighi, L. Malomo, D. Giorgi, B. Bickel, P. Cignoni, and N. Pietroni,
“Volume-aware design of composite molds,” ACM Transactions on Graphics,
vol. 38, no. 4. ACM, 2019.
ista: Alderighi T, Malomo L, Giorgi D, Bickel B, Cignoni P, Pietroni N. 2019. Volume-aware
design of composite molds. ACM Transactions on Graphics. 38(4), 110.
mla: Alderighi, Thomas, et al. “Volume-Aware Design of Composite Molds.” ACM
Transactions on Graphics, vol. 38, no. 4, 110, ACM, 2019, doi:10.1145/3306346.3322981.
short: T. Alderighi, L. Malomo, D. Giorgi, B. Bickel, P. Cignoni, N. Pietroni, ACM
Transactions on Graphics 38 (2019).
date_created: 2019-07-19T06:18:15Z
date_published: 2019-07-01T00:00:00Z
date_updated: 2023-08-29T06:35:52Z
day: '01'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3306346.3322981
ec_funded: 1
external_id:
isi:
- '000475740600084'
file:
- access_level: open_access
checksum: b4562af94672b44d2a501046427412af
content_type: application/pdf
creator: dernst
date_created: 2019-07-19T06:18:53Z
date_updated: 2020-07-14T12:47:35Z
file_id: '6651'
file_name: 2019_ACM_Alderighi_AuthorVersion.pdf
file_size: 74316182
relation: main_file
file_date_updated: 2020-07-14T12:47:35Z
has_accepted_license: '1'
intvolume: ' 38'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
issn:
- 0730-0301
publication_status: published
publisher: ACM
quality_controlled: '1'
related_material:
link:
- description: YouTube Video
relation: supplementary_material
url: https://youtu.be/SO349S8-x_w
scopus_import: '1'
status: public
title: Volume-aware design of composite molds
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 38
year: '2019'
...
---
_id: '6660'
abstract:
- lang: eng
text: "Commercially available full-color 3D printing allows for detailed control
of material deposition in a volume, but an exact reproduction of a target surface
appearance is hampered by the strong subsurface scattering that causes nontrivial
volumetric cross-talk at the print surface. Previous work showed how an iterative
optimization scheme based on accumulating absorptive materials at the surface
can be used to find a volumetric distribution of print materials that closely
approximates a given target appearance.\r\n\r\nIn this work, we first revisit
the assumption that pushing the absorptive materials to the surface results in
minimal volumetric cross-talk. We design a full-fledged optimization on a small
domain for this task and confirm this previously reported heuristic. Then, we
extend the above approach that is critically limited to color reproduction on
planar surfaces, to arbitrary 3D shapes. Our method enables high-fidelity color
texture reproduction on 3D prints by effectively compensating for internal light
scattering within arbitrarily shaped objects. In addition, we propose a content-aware
gamut mapping that significantly improves color reproduction for the pathological
case of thin geometric features. Using a wide range of sample objects with complex
textures and geometries, we demonstrate color reproduction whose fidelity is superior
to state-of-the-art drivers for color 3D printers."
article_number: '111'
article_processing_charge: No
author:
- first_name: Denis
full_name: Sumin, Denis
last_name: Sumin
- first_name: Tim
full_name: Weyrich, Tim
last_name: Weyrich
- first_name: Tobias
full_name: Rittig, Tobias
last_name: Rittig
- first_name: Vahid
full_name: Babaei, Vahid
last_name: Babaei
- first_name: Thomas
full_name: Nindel, Thomas
last_name: Nindel
- first_name: Alexander
full_name: Wilkie, Alexander
last_name: Wilkie
- first_name: Piotr
full_name: Didyk, Piotr
last_name: Didyk
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Jaroslav
full_name: Křivánek, Jaroslav
last_name: Křivánek
- first_name: Karol
full_name: Myszkowski, Karol
last_name: Myszkowski
citation:
ama: Sumin D, Weyrich T, Rittig T, et al. Geometry-aware scattering compensation
for 3D printing. ACM Transactions on Graphics. 2019;38(4). doi:10.1145/3306346.3322992
apa: Sumin, D., Weyrich, T., Rittig, T., Babaei, V., Nindel, T., Wilkie, A., … Myszkowski,
K. (2019). Geometry-aware scattering compensation for 3D printing. ACM Transactions
on Graphics. ACM. https://doi.org/10.1145/3306346.3322992
chicago: Sumin, Denis, Tim Weyrich, Tobias Rittig, Vahid Babaei, Thomas Nindel,
Alexander Wilkie, Piotr Didyk, Bernd Bickel, Jaroslav Křivánek, and Karol Myszkowski.
“Geometry-Aware Scattering Compensation for 3D Printing.” ACM Transactions
on Graphics. ACM, 2019. https://doi.org/10.1145/3306346.3322992.
ieee: D. Sumin et al., “Geometry-aware scattering compensation for 3D printing,”
ACM Transactions on Graphics, vol. 38, no. 4. ACM, 2019.
ista: Sumin D, Weyrich T, Rittig T, Babaei V, Nindel T, Wilkie A, Didyk P, Bickel
B, Křivánek J, Myszkowski K. 2019. Geometry-aware scattering compensation for
3D printing. ACM Transactions on Graphics. 38(4), 111.
mla: Sumin, Denis, et al. “Geometry-Aware Scattering Compensation for 3D Printing.”
ACM Transactions on Graphics, vol. 38, no. 4, 111, ACM, 2019, doi:10.1145/3306346.3322992.
short: D. Sumin, T. Weyrich, T. Rittig, V. Babaei, T. Nindel, A. Wilkie, P. Didyk,
B. Bickel, J. Křivánek, K. Myszkowski, ACM Transactions on Graphics 38 (2019).
date_created: 2019-07-22T07:22:28Z
date_published: 2019-07-04T00:00:00Z
date_updated: 2023-08-29T06:40:49Z
day: '04'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3306346.3322992
ec_funded: 1
external_id:
isi:
- '000475740600085'
file:
- access_level: open_access
checksum: 43c2019d6b48ed9c56e31686c4c2d1f5
content_type: application/pdf
creator: dernst
date_created: 2019-07-24T07:36:08Z
date_updated: 2020-07-14T12:47:36Z
file_id: '6669'
file_name: 2019_ACM_Sumin_AuthorVersion.pdf
file_size: 10109800
relation: main_file
- access_level: open_access
checksum: f80f365a04e35855fa467ea7ab26b16c
content_type: application/zip
creator: dernst
date_created: 2019-10-11T06:51:07Z
date_updated: 2020-07-14T12:47:36Z
file_id: '6938'
file_name: sumin19geometry-aware-suppl.zip
file_size: 11051245
relation: supplementary_material
file_date_updated: 2020-07-14T12:47:36Z
has_accepted_license: '1'
intvolume: ' 38'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 2508E324-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '642841'
name: Distributed 3D Object Design
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
issn:
- 0730-0301
publication_status: published
publisher: ACM
quality_controlled: '1'
scopus_import: '1'
status: public
title: Geometry-aware scattering compensation for 3D printing
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 38
year: '2019'
...
---
_id: '7002'
abstract:
- lang: eng
text: Multiple Importance Sampling (MIS) is a key technique for achieving robustness
of Monte Carlo estimators in computer graphics and other fields. We derive optimal
weighting functions for MIS that provably minimize the variance of an MIS estimator,
given a set of sampling techniques. We show that the resulting variance reduction
over the balance heuristic can be higher than predicted by the variance bounds
derived by Veach and Guibas, who assumed only non-negative weights in their proof.
We theoretically analyze the variance of the optimal MIS weights and show the
relation to the variance of the balance heuristic. Furthermore, we establish a
connection between the new weighting functions and control variates as previously
applied to mixture sampling. We apply the new optimal weights to integration problems
in light transport and show that they allow for new design considerations when
choosing the appropriate sampling techniques for a given integration problem.
article_number: '37'
article_processing_charge: No
article_type: original
author:
- first_name: Ivo
full_name: Kondapaneni, Ivo
last_name: Kondapaneni
- first_name: Petr
full_name: Vevoda, Petr
last_name: Vevoda
- first_name: Pascal
full_name: Grittmann, Pascal
last_name: Grittmann
- first_name: Tomas
full_name: Skrivan, Tomas
id: 486A5A46-F248-11E8-B48F-1D18A9856A87
last_name: Skrivan
- first_name: Philipp
full_name: Slusallek, Philipp
last_name: Slusallek
- first_name: Jaroslav
full_name: Křivánek, Jaroslav
last_name: Křivánek
citation:
ama: Kondapaneni I, Vevoda P, Grittmann P, Skrivan T, Slusallek P, Křivánek J. Optimal
multiple importance sampling. ACM Transactions on Graphics. 2019;38(4).
doi:10.1145/3306346.3323009
apa: Kondapaneni, I., Vevoda, P., Grittmann, P., Skrivan, T., Slusallek, P., &
Křivánek, J. (2019). Optimal multiple importance sampling. ACM Transactions
on Graphics. ACM. https://doi.org/10.1145/3306346.3323009
chicago: Kondapaneni, Ivo, Petr Vevoda, Pascal Grittmann, Tomas Skrivan, Philipp
Slusallek, and Jaroslav Křivánek. “Optimal Multiple Importance Sampling.” ACM
Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3306346.3323009.
ieee: I. Kondapaneni, P. Vevoda, P. Grittmann, T. Skrivan, P. Slusallek, and J.
Křivánek, “Optimal multiple importance sampling,” ACM Transactions on Graphics,
vol. 38, no. 4. ACM, 2019.
ista: Kondapaneni I, Vevoda P, Grittmann P, Skrivan T, Slusallek P, Křivánek J.
2019. Optimal multiple importance sampling. ACM Transactions on Graphics. 38(4),
37.
mla: Kondapaneni, Ivo, et al. “Optimal Multiple Importance Sampling.” ACM Transactions
on Graphics, vol. 38, no. 4, 37, ACM, 2019, doi:10.1145/3306346.3323009.
short: I. Kondapaneni, P. Vevoda, P. Grittmann, T. Skrivan, P. Slusallek, J. Křivánek,
ACM Transactions on Graphics 38 (2019).
date_created: 2019-11-12T13:05:40Z
date_published: 2019-07-01T00:00:00Z
date_updated: 2023-08-30T07:21:25Z
day: '01'
department:
- _id: ChWo
doi: 10.1145/3306346.3323009
ec_funded: 1
external_id:
isi:
- '000475740600011'
intvolume: ' 38'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa_version: None
project:
- _id: 2508E324-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '642841'
name: Distributed 3D Object Design
publication: ACM Transactions on Graphics
publication_identifier:
issn:
- 0730-0301
publication_status: published
publisher: ACM
quality_controlled: '1'
scopus_import: '1'
status: public
title: Optimal multiple importance sampling
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 38
year: '2019'
...
---
_id: '7117'
abstract:
- lang: eng
text: We propose a novel generic shape optimization method for CAD models based
on the eXtended Finite Element Method (XFEM). Our method works directly on the
intersection between the model and a regular simulation grid, without the need
to mesh or remesh, thus removing a bottleneck of classical shape optimization
strategies. This is made possible by a novel hierarchical integration scheme that
accurately integrates finite element quantities with sub-element precision. For
optimization, we efficiently compute analytical shape derivatives of the entire
framework, from model intersection to integration rule generation and XFEM simulation.
Moreover, we describe a differentiable projection of shape parameters onto a constraint
manifold spanned by user-specified shape preservation, consistency, and manufacturability
constraints. We demonstrate the utility of our approach by optimizing mass distribution,
strength-to-weight ratio, and inverse elastic shape design objectives directly
on parameterized 3D CAD models.
article_number: '157'
article_processing_charge: No
article_type: original
author:
- first_name: Christian
full_name: Hafner, Christian
id: 400429CC-F248-11E8-B48F-1D18A9856A87
last_name: Hafner
- first_name: Christian
full_name: Schumacher, Christian
last_name: Schumacher
- first_name: Espen
full_name: Knoop, Espen
last_name: Knoop
- first_name: Thomas
full_name: Auzinger, Thomas
id: 4718F954-F248-11E8-B48F-1D18A9856A87
last_name: Auzinger
orcid: 0000-0002-1546-3265
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
- first_name: Moritz
full_name: Bächer, Moritz
last_name: Bächer
citation:
ama: 'Hafner C, Schumacher C, Knoop E, Auzinger T, Bickel B, Bächer M. X-CAD: Optimizing
CAD Models with Extended Finite Elements. ACM Transactions on Graphics.
2019;38(6). doi:10.1145/3355089.3356576'
apa: 'Hafner, C., Schumacher, C., Knoop, E., Auzinger, T., Bickel, B., & Bächer,
M. (2019). X-CAD: Optimizing CAD Models with Extended Finite Elements. ACM
Transactions on Graphics. ACM. https://doi.org/10.1145/3355089.3356576'
chicago: 'Hafner, Christian, Christian Schumacher, Espen Knoop, Thomas Auzinger,
Bernd Bickel, and Moritz Bächer. “X-CAD: Optimizing CAD Models with Extended Finite
Elements.” ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3355089.3356576.'
ieee: 'C. Hafner, C. Schumacher, E. Knoop, T. Auzinger, B. Bickel, and M. Bächer,
“X-CAD: Optimizing CAD Models with Extended Finite Elements,” ACM Transactions
on Graphics, vol. 38, no. 6. ACM, 2019.'
ista: 'Hafner C, Schumacher C, Knoop E, Auzinger T, Bickel B, Bächer M. 2019. X-CAD:
Optimizing CAD Models with Extended Finite Elements. ACM Transactions on Graphics.
38(6), 157.'
mla: 'Hafner, Christian, et al. “X-CAD: Optimizing CAD Models with Extended Finite
Elements.” ACM Transactions on Graphics, vol. 38, no. 6, 157, ACM, 2019,
doi:10.1145/3355089.3356576.'
short: C. Hafner, C. Schumacher, E. Knoop, T. Auzinger, B. Bickel, M. Bächer, ACM
Transactions on Graphics 38 (2019).
date_created: 2019-11-26T14:22:09Z
date_published: 2019-11-06T00:00:00Z
date_updated: 2024-03-25T23:30:26Z
day: '06'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3355089.3356576
ec_funded: 1
external_id:
isi:
- '000498397300007'
file:
- access_level: open_access
checksum: 56a2fb019adcb556d2b022f5e5acb68c
content_type: application/pdf
creator: bbickel
date_created: 2019-11-26T14:24:26Z
date_updated: 2020-07-14T12:47:49Z
file_id: '7119'
file_name: xcad_sup_mat_siga19.pdf
file_size: 1673176
relation: supplementary_material
title: X-CAD Supplemental Material
- access_level: open_access
checksum: 5f29d76aceb5102e766cbab9b17d776e
content_type: application/pdf
creator: bbickel
date_created: 2019-11-26T14:24:27Z
date_updated: 2020-07-14T12:47:49Z
description: This is the author's version of the work.
file_id: '7120'
file_name: XCAD_authors_version.pdf
file_size: 14563618
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title: 'X-CAD: Optimizing CAD Models with Extended Finite Elements'
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checksum: 0d31e123286cbec9e28b2001c2bb0d55
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has_accepted_license: '1'
intvolume: ' 38'
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issue: '6'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Submitted Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
publication: ACM Transactions on Graphics
publication_identifier:
issn:
- 0730-0301
publication_status: published
publisher: ACM
quality_controlled: '1'
related_material:
record:
- id: '12897'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'X-CAD: Optimizing CAD Models with Extended Finite Elements'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 38
year: '2019'
...
---
_id: '7418'
abstract:
- lang: eng
text: Multiple importance sampling (MIS) has become an indispensable tool in Monte
Carlo rendering, widely accepted as a near-optimal solution for combining different
sampling techniques. But an MIS combination, using the common balance or power
heuristics, often results in an overly defensive estimator, leading to high variance.
We show that by generalizing the MIS framework, variance can be substantially
reduced. Specifically, we optimize one of the combined sampling techniques so
as to decrease the overall variance of the resulting MIS estimator. We apply the
approach to the computation of direct illumination due to an HDR environment map
and to the computation of global illumination using a path guiding algorithm.
The implementation can be as simple as subtracting a constant value from the tabulated
sampling density done entirely in a preprocessing step. This produces a consistent
noise reduction in all our tests with no negative influence on run time, no artifacts
or bias, and no failure cases.
article_number: '151'
article_processing_charge: No
article_type: original
author:
- first_name: Ondřej
full_name: Karlík, Ondřej
last_name: Karlík
- first_name: Martin
full_name: Šik, Martin
last_name: Šik
- first_name: Petr
full_name: Vévoda, Petr
last_name: Vévoda
- first_name: Tomas
full_name: Skrivan, Tomas
id: 486A5A46-F248-11E8-B48F-1D18A9856A87
last_name: Skrivan
- first_name: Jaroslav
full_name: Křivánek, Jaroslav
last_name: Křivánek
citation:
ama: 'Karlík O, Šik M, Vévoda P, Skrivan T, Křivánek J. MIS compensation: Optimizing
sampling techniques in multiple importance sampling. ACM Transactions on Graphics.
2019;38(6). doi:10.1145/3355089.3356565'
apa: 'Karlík, O., Šik, M., Vévoda, P., Skrivan, T., & Křivánek, J. (2019). MIS
compensation: Optimizing sampling techniques in multiple importance sampling.
ACM Transactions on Graphics. ACM. https://doi.org/10.1145/3355089.3356565'
chicago: 'Karlík, Ondřej, Martin Šik, Petr Vévoda, Tomas Skrivan, and Jaroslav Křivánek.
“MIS Compensation: Optimizing Sampling Techniques in Multiple Importance Sampling.”
ACM Transactions on Graphics. ACM, 2019. https://doi.org/10.1145/3355089.3356565.'
ieee: 'O. Karlík, M. Šik, P. Vévoda, T. Skrivan, and J. Křivánek, “MIS compensation:
Optimizing sampling techniques in multiple importance sampling,” ACM Transactions
on Graphics, vol. 38, no. 6. ACM, 2019.'
ista: 'Karlík O, Šik M, Vévoda P, Skrivan T, Křivánek J. 2019. MIS compensation:
Optimizing sampling techniques in multiple importance sampling. ACM Transactions
on Graphics. 38(6), 151.'
mla: 'Karlík, Ondřej, et al. “MIS Compensation: Optimizing Sampling Techniques in
Multiple Importance Sampling.” ACM Transactions on Graphics, vol. 38, no.
6, 151, ACM, 2019, doi:10.1145/3355089.3356565.'
short: O. Karlík, M. Šik, P. Vévoda, T. Skrivan, J. Křivánek, ACM Transactions on
Graphics 38 (2019).
date_created: 2020-01-30T10:19:43Z
date_published: 2019-11-01T00:00:00Z
date_updated: 2023-09-06T15:22:23Z
day: '01'
department:
- _id: ChWo
doi: 10.1145/3355089.3356565
external_id:
isi:
- '000498397300001'
intvolume: ' 38'
isi: 1
issue: '6'
language:
- iso: eng
month: '11'
oa_version: None
publication: ACM Transactions on Graphics
publication_identifier:
eissn:
- 1557-7368
issn:
- 0730-0301
publication_status: published
publisher: ACM
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'MIS compensation: Optimizing sampling techniques in multiple importance sampling'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 38
year: '2019'
...
---
_id: '5976'
abstract:
- lang: eng
text: We propose FlexMaps, a novel framework for fabricating smooth shapes out of
flat, flexible panels with tailored mechanical properties. We start by mapping
the 3D surface onto a 2D domain as in traditional UV mapping to design a set of
deformable flat panels called FlexMaps. For these panels, we design and obtain
specific mechanical properties such that, once they are assembled, the static
equilibrium configuration matches the desired 3D shape. FlexMaps can be fabricated
from an almost rigid material, such as wood or plastic, and are made flexible
in a controlled way by using computationally designed spiraling microstructures.
article_number: '241'
article_processing_charge: No
article_type: original
author:
- first_name: Luigi
full_name: Malomo, Luigi
last_name: Malomo
- first_name: Jesus
full_name: Perez Rodriguez, Jesus
id: 2DC83906-F248-11E8-B48F-1D18A9856A87
last_name: Perez Rodriguez
- first_name: Emmanuel
full_name: Iarussi, Emmanuel
id: 33F19F16-F248-11E8-B48F-1D18A9856A87
last_name: Iarussi
- first_name: Nico
full_name: Pietroni, Nico
last_name: Pietroni
- first_name: Eder
full_name: Miguel, Eder
last_name: Miguel
- first_name: Paolo
full_name: Cignoni, Paolo
last_name: Cignoni
- first_name: Bernd
full_name: Bickel, Bernd
id: 49876194-F248-11E8-B48F-1D18A9856A87
last_name: Bickel
orcid: 0000-0001-6511-9385
citation:
ama: 'Malomo L, Perez Rodriguez J, Iarussi E, et al. FlexMaps: Computational design
of flat flexible shells for shaping 3D objects. ACM Transactions on Graphics.
2018;37(6). doi:10.1145/3272127.3275076'
apa: 'Malomo, L., Perez Rodriguez, J., Iarussi, E., Pietroni, N., Miguel, E., Cignoni,
P., & Bickel, B. (2018). FlexMaps: Computational design of flat flexible shells
for shaping 3D objects. ACM Transactions on Graphics. Association for Computing
Machinery (ACM). https://doi.org/10.1145/3272127.3275076'
chicago: 'Malomo, Luigi, Jesus Perez Rodriguez, Emmanuel Iarussi, Nico Pietroni,
Eder Miguel, Paolo Cignoni, and Bernd Bickel. “FlexMaps: Computational Design
of Flat Flexible Shells for Shaping 3D Objects.” ACM Transactions on Graphics.
Association for Computing Machinery (ACM), 2018. https://doi.org/10.1145/3272127.3275076.'
ieee: 'L. Malomo et al., “FlexMaps: Computational design of flat flexible
shells for shaping 3D objects,” ACM Transactions on Graphics, vol. 37,
no. 6. Association for Computing Machinery (ACM), 2018.'
ista: 'Malomo L, Perez Rodriguez J, Iarussi E, Pietroni N, Miguel E, Cignoni P,
Bickel B. 2018. FlexMaps: Computational design of flat flexible shells for shaping
3D objects. ACM Transactions on Graphics. 37(6), 241.'
mla: 'Malomo, Luigi, et al. “FlexMaps: Computational Design of Flat Flexible Shells
for Shaping 3D Objects.” ACM Transactions on Graphics, vol. 37, no. 6,
241, Association for Computing Machinery (ACM), 2018, doi:10.1145/3272127.3275076.'
short: L. Malomo, J. Perez Rodriguez, E. Iarussi, N. Pietroni, E. Miguel, P. Cignoni,
B. Bickel, ACM Transactions on Graphics 37 (2018).
date_created: 2019-02-13T13:12:53Z
date_published: 2018-11-01T00:00:00Z
date_updated: 2023-09-19T14:25:30Z
day: '01'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1145/3272127.3275076
ec_funded: 1
external_id:
isi:
- '000455953100064'
file:
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checksum: d0529a41c78b37ab8840685579fb33b4
content_type: application/pdf
creator: bbickel
date_created: 2019-09-23T12:48:52Z
date_updated: 2020-07-14T12:47:14Z
file_id: '6901'
file_name: flexmaps_author_version.pdf
file_size: 100109811
relation: main_file
file_date_updated: 2020-07-14T12:47:14Z
has_accepted_license: '1'
intvolume: ' 37'
isi: 1
issue: '6'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715767'
name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
Modeling'
- _id: 25082902-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '645599'
name: Soft-bodied intelligence for Manipulation
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: ACM Transactions on Graphics
publication_identifier:
issn:
- 0730-0301
publication_status: published
publisher: Association for Computing Machinery (ACM)
pubrep_id: '1068'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'FlexMaps: Computational design of flat flexible shells for shaping 3D objects'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 37
year: '2018'
...