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Paper Abstract and Keywords
Presentation 2004-12-17 13:10
Effects of Image Segmentation for Approximating Object Appearance under Near Lighting
Takahiro Okabe, Yoichi Sato (The University of Tokyo)
Abstract (in Japanese) (See Japanese page) 
(in English) Shading analysis of an object under near lighting is not an easy task, because the direction and distance of the light source vary over the object surface. However, when observing a small area on the surface, techniques assuming far lighting are applicable, because variations of the direction and distance are small in the area. In this paper, we present three contributions to image segmentation for approximating object appearance under near light sources. First, we experimentally evaluate the accuracy of approximations using rectangular segmentation for images of objects under near light sources, and confirm the effects of image segmentation itself. Second, we propose a new segmentation method for approximating images under near light sources. Our proposed method plans appropriate segmentations in terms of approximation, depending on object's properties and probability density functions (PDFs) of illumination. Finally, we provide implications for some applications including face recognition and forward rendering.
Keyword (in Japanese) (See Japanese page) 
(in English) near lighting / image segmentation / approximation / clustering / illumination distribution / / /  
Reference Info. IEICE Tech. Rep., vol. 104, no. 524, PRMU2004-148, pp. 85-90, Dec. 2004.
Paper # PRMU2004-148 
Date of Issue 2004-12-10 (PRMU) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee PRMU  
Conference Date 2004-12-16 - 2004-12-17 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To PRMU 
Conference Code 2004-12-PRMU 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effects of Image Segmentation for Approximating Object Appearance under Near Lighting 
Sub Title (in English)  
Keyword(1) near lighting  
Keyword(2) image segmentation  
Keyword(3) approximation  
Keyword(4) clustering  
Keyword(5) illumination distribution  
1st Author's Name Takahiro Okabe  
1st Author's Affiliation Institute of Industrial Science, The University of Tokyo (The University of Tokyo)
2nd Author's Name Yoichi Sato  
2nd Author's Affiliation Institute of Industrial Science, The University of Tokyo (The University of Tokyo)
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Date Time 2004-12-17 13:10:00 
Presentation Time 30 
Registration for PRMU 
Paper # IEICE-PRMU2004-148 
Volume (vol) IEICE-104 
Number (no) no.524 
Page pp.85-90 
#Pages IEICE-6 
Date of Issue IEICE-PRMU-2004-12-10 

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