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Paper Abstract and Keywords
Presentation 2013-12-09 13:50
Acquisition of Light Transports Using Coded Illumination
Isao Miyagawa, Hiroyuki Arai, Taniguchi Yukinobu (NTT)
Abstract (in Japanese) (See Japanese page) 
(in English) We describe geometrical correspondences between projector pixels and camera pixels for uncalibrated projector-camera systems by introducing light transports, which have direct reflection, indirect reflection, and multipath reflection from unknown spatial structure. Since brute-force scan illuminates the objects using the light yielded from each projector pixel in order, the number of images captured by the camera grows exponentially with the number of pixels used for projector illumination in order to measure the full light transports. Accordingly, we encode projector pixels by coded illumination with multiple layers and emit coded patterns on each layer for unknown 3D objects. We obtain approximately light transports that have direct and indirect reflections by decoding the observed images. In experiments, the proposed method shows its effectiveness of acquiring light transports, and it yields excellent projection mapping on unknown 3D objects.
Keyword (in Japanese) (See Japanese page) 
(in English) Light Transport / Direct/Indirect Reflection / Radiometric Compensation / Projector-Camera System / Projection Mapping / / /  
Reference Info. ITE Tech. Rep., vol. 37, no. 56, ME2013-121, pp. 9-14, Dec. 2013.
Paper # ME2013-121 
Date of Issue 2013-12-02 (ME) 
ISSN Print edition: ISSN 1342-6893
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Conference Information
Committee ME  
Conference Date 2013-12-09 - 2013-12-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Matuyasensen 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ME 
Conference Code 2013-12-ME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Acquisition of Light Transports Using Coded Illumination 
Sub Title (in English)  
Keyword(1) Light Transport  
Keyword(2) Direct/Indirect Reflection  
Keyword(3) Radiometric Compensation  
Keyword(4) Projector-Camera System  
Keyword(5) Projection Mapping  
1st Author's Name Isao Miyagawa  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Hiroyuki Arai  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Taniguchi Yukinobu  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2013-12-09 13:50:00 
Presentation Time 25 minutes 
Registration for ME 
Paper # ME2013-121 
Volume (vol) vol.37 
Number (no) no.56 
Page pp.9-14 
Date of Issue 2013-12-02 (ME) 

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