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Programmable Non-Epipolar Indirect Light Transport: Capture and Analysis

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dc.contributor.author Kubo, Hiroyuki en
dc.contributor.author Jayasuriya, Suren en
dc.contributor.author Iwaguchi, Takafumi en
dc.contributor.author Funatomi, Takuya en
dc.contributor.author Mukaigawa, Yasuhiro en
dc.contributor.author Narasimhan, Srinivasa G. en
dc.date.accessioned 2020-02-14T04:35:35Z en
dc.date.available 2020-02-14T04:35:35Z en
dc.date.issued 2019-10-21 en
dc.identifier.issn 1077-2626 en
dc.identifier.uri http://hdl.handle.net/10061/13967 en
dc.description.abstract 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, 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 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. en
dc.language.iso en en
dc.publisher IEEE en
dc.relation.isreplacedby https://ieeexplore.ieee.org/document/8877764 en
dc.subject Cameras en
dc.subject Lighting en
dc.subject Skin en
dc.subject Synchronization en
dc.subject Delays en
dc.subject Scattering en
dc.title Programmable Non-Epipolar Indirect Light Transport: Capture and Analysis en
dc.type.nii Journal Article en
dc.contributor.transcription クボ, ヒロユキ ja
dc.contributor.transcription フナトミ, タクヤ ja
dc.contributor.transcription ムカイガワ, ヤスヒロ ja
dc.contributor.alternative 久保, 尋之 ja
dc.contributor.alternative 舩冨, 卓哉 ja
dc.contributor.alternative 向川, 康博 ja
dc.textversion none en
dc.identifier.jtitle IEEE Transactions on Visualization and Computer Graphics en
dc.relation.doi 10.1109/TVCG.2019.2946812 en
dc.identifier.NAIST-ID 74651274 en
dc.identifier.NAIST-ID 74651670 en
dc.identifier.NAIST-ID 74650524 en


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