| Presentation | 2004-12-17 Effects of Image Segmentation for Approximating Object Appearance under Near Lighting Takahiro OKABE, Yoichi SATO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | near lighting / image segmentation / approximation / clustering / illumination distribution |
| Paper # | PRMU2004-148 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2004/12/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| 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() |
| 2nd Author's Name | Yoichi SATO |
| 2nd Author's Affiliation | Institute of Industrial Science, The University of Tokyo |
| Date | 2004-12-17 |
| Paper # | PRMU2004-148 |
| Volume (vol) | vol.104 |
| Number (no) | 524 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |