Programmable Non-Epipolar Indirect Light Transport: Capture and Analysis
Programmable Non-Epipolar Indirect Light Transport: Capture and Analysis
复制标题
可编程非极间接光传输:捕获和分析
DOI:
10.1109/tvcg.2019.2946812
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发表时间:
2021
影响因子:
5.2
通讯作者:
Narasimhan, Srinivasa G.
中科院分区:
文献类型:
--
作者:
Kubo, Hiroyuki;Jayasuriya, Suren;Iwaguchi, Takafumi;Funatomi, Takuya;Mukaigawa, Yasuhiro;Narasimhan, Srinivasa G.
The decomposition of light transport into direct and global components, diffuse and specular interreflections, and subsurface scattering allows for new visualizations of light in everyday scenes. In particular, indirect light contains a myriad of information about the complex appearance of materials useful for computer vision and inverse rendering applications. In this paper, we present a new imaging technique that captures and analyzes components of indirect light via light transport using a synchronized projector-camera system. The rectified system illuminates the scene with epipolar planes corresponding to projector rows, and we vary two key parameters to capture plane-to-ray light transport between projector row and camera pixel: (1) the offset between projector row and camera row in the rolling shutter (implemented as synchronization delay), and (2) the exposure of the camera row. We describe how this synchronized rolling shutter performs illumination multiplexing, and develop a nonlinear optimization algorithm to demultiplex the resulting 3D light transport operator. Using our system, we are able to capture live short and long-range non-epipolar indirect light transport, disambiguate subsurface scattering, diffuse and specular interreflections, and distinguish materials according to their subsurface scattering properties. In particular, we show the utility of indirect imaging for capturing and analyzing the hidden structure of veins in human skin.
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DOI:
10.2312/egwr/egsr06/251-262
发表时间:
2006-06
期刊:
--
影响因子:
--
作者:
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通讯作者:
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影响因子:
3.8
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通讯作者:
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DOI:
--
发表时间:
2014
期刊:
International Conference on Computational Photography
影响因子:
--
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DOI:
10.1145/3072959.3073686
发表时间:
2017-07
期刊:
ACM Transactions on Graphics (TOG)
影响因子:
--
作者:
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通讯作者:
Supreeth Achar;Joseph R. Bartels;W. Whittaker;Kiriakos N. Kutulakos;S. Narasimhan
DOI:
10.1109/cvpr.2017.251
发表时间:
2017-07
期刊:
2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
影响因子:
--
作者:
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通讯作者:
Chia-Yin Tsai;Kiriakos N. Kutulakos;S. Narasimhan;Aswin C. Sankaranarayanan