---
_id: '9241'
abstract:
- lang: eng
  text: 'Volumetric light transport is a pervasive physical phenomenon, and therefore
    its accurate simulation is important for a broad array of disciplines. While suitable
    mathematical models for computing the transport are now available, obtaining the
    necessary material parameters needed to drive such simulations is a challenging
    task: direct measurements of these parameters from material samples are seldom
    possible. Building on the inverse scattering paradigm, we present a novel measurement
    approach which indirectly infers the transport parameters from extrinsic observations
    of multiple-scattered radiance. The novelty of the proposed approach lies in replacing
    structured illumination with a structured reflector bonded to the sample, and
    a robust fitting procedure that largely compensates for potential systematic errors
    in the calibration of the setup. We show the feasibility of our approach by validating
    simulations of complex 3D compositions of the measured materials against physical
    prints, using photo-polymer resins. As presented in this paper, our technique
    yields colorspace data suitable for accurate appearance reproduction in the area
    of 3D printing. Beyond that, and without fundamental changes to the basic measurement
    methodology, it could equally well be used to obtain spectral measurements that
    are useful for other application areas.'
acknowledgement: "H2020 Marie Skłodowska-Curie Actions (642841); European Research
  Council (715767); Grantová Agentura České Republiky (16-08111S, 16-18964S); Univerzita
  Karlova v Praze (SVV-2017-260452); Engineering and Physical Sciences Research Council
  (EP/K023578/1).\r\nWe are grateful to Stratasys Ltd. for access to the voxel-level
  print interface of the J750\r\nmachine."
article_processing_charge: No
article_type: original
author:
- first_name: Oskar
  full_name: Elek, Oskar
  last_name: Elek
- first_name: Ran
  full_name: Zhang, Ran
  id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87
  last_name: Zhang
  orcid: 0000-0002-3808-281X
- first_name: Denis
  full_name: Sumin, Denis
  last_name: Sumin
- first_name: Karol
  full_name: Myszkowski, Karol
  last_name: Myszkowski
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
- first_name: Alexander
  full_name: Wilkie, Alexander
  last_name: Wilkie
- first_name: Jaroslav
  full_name: Křivánek, Jaroslav
  last_name: Křivánek
- first_name: Tim
  full_name: Weyrich, Tim
  last_name: Weyrich
citation:
  ama: Elek O, Zhang R, Sumin D, et al. Robust and practical measurement of volume
    transport parameters in solid photo-polymer materials for 3D printing. <i>Optics
    Express</i>. 2021;29(5):7568-7588. doi:<a href="https://doi.org/10.1364/OE.406095">10.1364/OE.406095</a>
  apa: Elek, O., Zhang, R., Sumin, D., Myszkowski, K., Bickel, B., Wilkie, A., … Weyrich,
    T. (2021). Robust and practical measurement of volume transport parameters in
    solid photo-polymer materials for 3D printing. <i>Optics Express</i>. The Optical
    Society. <a href="https://doi.org/10.1364/OE.406095">https://doi.org/10.1364/OE.406095</a>
  chicago: Elek, Oskar, Ran Zhang, Denis Sumin, Karol Myszkowski, Bernd Bickel, Alexander
    Wilkie, Jaroslav Křivánek, and Tim Weyrich. “Robust and Practical Measurement
    of Volume Transport Parameters in Solid Photo-Polymer Materials for 3D Printing.”
    <i>Optics Express</i>. The Optical Society, 2021. <a href="https://doi.org/10.1364/OE.406095">https://doi.org/10.1364/OE.406095</a>.
  ieee: O. Elek <i>et al.</i>, “Robust and practical measurement of volume transport
    parameters in solid photo-polymer materials for 3D printing,” <i>Optics Express</i>,
    vol. 29, no. 5. The Optical Society, pp. 7568–7588, 2021.
  ista: Elek O, Zhang R, Sumin D, Myszkowski K, Bickel B, Wilkie A, Křivánek J, Weyrich
    T. 2021. Robust and practical measurement of volume transport parameters in solid
    photo-polymer materials for 3D printing. Optics Express. 29(5), 7568–7588.
  mla: Elek, Oskar, et al. “Robust and Practical Measurement of Volume Transport Parameters
    in Solid Photo-Polymer Materials for 3D Printing.” <i>Optics Express</i>, vol.
    29, no. 5, The Optical Society, 2021, pp. 7568–88, doi:<a href="https://doi.org/10.1364/OE.406095">10.1364/OE.406095</a>.
  short: O. Elek, R. Zhang, D. Sumin, K. Myszkowski, B. Bickel, A. Wilkie, J. Křivánek,
    T. Weyrich, Optics Express 29 (2021) 7568–7588.
date_created: 2021-03-14T23:01:33Z
date_published: 2021-03-01T00:00:00Z
date_updated: 2023-08-07T14:11:57Z
day: '01'
ddc:
- '000'
department:
- _id: BeBi
doi: 10.1364/OE.406095
ec_funded: 1
external_id:
  isi:
  - '000624968100103'
file:
- access_level: open_access
  checksum: a9697ad83136c19ad87e46aa2db63cfd
  content_type: application/pdf
  creator: dernst
  date_created: 2021-03-22T08:15:28Z
  date_updated: 2021-03-22T08:15:28Z
  file_id: '9269'
  file_name: 2021_OpticsExpress_Elek.pdf
  file_size: 10873700
  relation: main_file
  success: 1
file_date_updated: 2021-03-22T08:15:28Z
has_accepted_license: '1'
intvolume: '        29'
isi: 1
issue: '5'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 7568-7588
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: Optics Express
publication_identifier:
  eissn:
  - 1094-4087
publication_status: published
publisher: The Optical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Robust and practical measurement of volume transport parameters in solid photo-polymer
  materials for 3D printing
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: 29
year: '2021'
...