Acquiring 4D Light Fields of Self-Luminous Extended Light Sources Using Programmable Filter

Motohiro NAKAMURA; Shinnosuke OYA; Takahiro OKABE; Hendrik P. A. LENSCH

doi:10.1587/transinf.2016EDP7068

Acquiring 4D Light Fields of Self-Luminous Extended Light Sources Using Programmable Filter

Motohiro NAKAMURA, Shinnosuke OYA, Takahiro OKABE, Hendrik P. A. LENSCH

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Summary :

Self-luminous light sources in the real world often have nonnegligible sizes and radiate light inhomogeneously. Acquiring the model of such a light source is highly important for accurate image synthesis and understanding. In this paper, we propose an approach to measuring 4D light fields of self-luminous extended light sources by using a liquid crystal (LC) panel, i.e. a programmable optical filter and a diffuse-reflection board. The proposed approach recovers the 4D light field from the images of the board illuminated by the light radiated from a light source and passing through the LC panel. We make use of the feature that the transmittance of the LC panel can be controlled both spatially and temporally. The approach enables multiplexed sensing and adaptive sensing, and therefore is able to acquire 4D light fields more efficiently and densely than the straightforward method. We implemented the prototype setup, and confirmed through a number of experiments that our approach is effective for modeling self-luminous extended light sources in the real world.

Publication: IEICE TRANSACTIONS on Information Vol.E99-D No.9 pp.2360-2367

Publication Date: 2016/09/01

Publicized: 2016/06/17

Online ISSN: 1745-1361

DOI: 10.1587/transinf.2016EDP7068

Type of Manuscript: PAPER

Category: Image Recognition, Computer Vision

Authors

Motohiro NAKAMURA
  Kyushu Institute of Technology
Shinnosuke OYA
  Kyushu Institute of Technology
Takahiro OKABE
  Kyushu Institute of Technology
Hendrik P. A. LENSCH
  Eberhard Karls Universität Tübingen

Keyword

4D light field, extended light source, programmable filter, multiplexed sensing, adaptive sensing

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Motohiro NAKAMURA, Shinnosuke OYA, Takahiro OKABE, Hendrik P. A. LENSCH, "Acquiring 4D Light Fields of Self-Luminous Extended Light Sources Using Programmable Filter" in IEICE TRANSACTIONS on Information, vol. E99-D, no. 9, pp. 2360-2367, September 2016, doi: 10.1587/transinf.2016EDP7068.
Abstract: Self-luminous light sources in the real world often have nonnegligible sizes and radiate light inhomogeneously. Acquiring the model of such a light source is highly important for accurate image synthesis and understanding. In this paper, we propose an approach to measuring 4D light fields of self-luminous extended light sources by using a liquid crystal (LC) panel, i.e. a programmable optical filter and a diffuse-reflection board. The proposed approach recovers the 4D light field from the images of the board illuminated by the light radiated from a light source and passing through the LC panel. We make use of the feature that the transmittance of the LC panel can be controlled both spatially and temporally. The approach enables multiplexed sensing and adaptive sensing, and therefore is able to acquire 4D light fields more efficiently and densely than the straightforward method. We implemented the prototype setup, and confirmed through a number of experiments that our approach is effective for modeling self-luminous extended light sources in the real world.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2016EDP7068/_p

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@ARTICLE{e99-d_9_2360,
author={Motohiro NAKAMURA, Shinnosuke OYA, Takahiro OKABE, Hendrik P. A. LENSCH, },
journal={IEICE TRANSACTIONS on Information},
title={Acquiring 4D Light Fields of Self-Luminous Extended Light Sources Using Programmable Filter},
year={2016},
volume={E99-D},
number={9},
pages={2360-2367},
abstract={Self-luminous light sources in the real world often have nonnegligible sizes and radiate light inhomogeneously. Acquiring the model of such a light source is highly important for accurate image synthesis and understanding. In this paper, we propose an approach to measuring 4D light fields of self-luminous extended light sources by using a liquid crystal (LC) panel, i.e. a programmable optical filter and a diffuse-reflection board. The proposed approach recovers the 4D light field from the images of the board illuminated by the light radiated from a light source and passing through the LC panel. We make use of the feature that the transmittance of the LC panel can be controlled both spatially and temporally. The approach enables multiplexed sensing and adaptive sensing, and therefore is able to acquire 4D light fields more efficiently and densely than the straightforward method. We implemented the prototype setup, and confirmed through a number of experiments that our approach is effective for modeling self-luminous extended light sources in the real world.},
keywords={},
doi={10.1587/transinf.2016EDP7068},
ISSN={1745-1361},
month={September},}

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TY - JOUR
TI - Acquiring 4D Light Fields of Self-Luminous Extended Light Sources Using Programmable Filter
T2 - IEICE TRANSACTIONS on Information
SP - 2360
EP - 2367
AU - Motohiro NAKAMURA
AU - Shinnosuke OYA
AU - Takahiro OKABE
AU - Hendrik P. A. LENSCH
PY - 2016
DO - 10.1587/transinf.2016EDP7068
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E99-D
IS - 9
JA - IEICE TRANSACTIONS on Information
Y1 - September 2016
AB - Self-luminous light sources in the real world often have nonnegligible sizes and radiate light inhomogeneously. Acquiring the model of such a light source is highly important for accurate image synthesis and understanding. In this paper, we propose an approach to measuring 4D light fields of self-luminous extended light sources by using a liquid crystal (LC) panel, i.e. a programmable optical filter and a diffuse-reflection board. The proposed approach recovers the 4D light field from the images of the board illuminated by the light radiated from a light source and passing through the LC panel. We make use of the feature that the transmittance of the LC panel can be controlled both spatially and temporally. The approach enables multiplexed sensing and adaptive sensing, and therefore is able to acquire 4D light fields more efficiently and densely than the straightforward method. We implemented the prototype setup, and confirmed through a number of experiments that our approach is effective for modeling self-luminous extended light sources in the real world.
ER -