| Presentation | 2006/9/20 Image Rendering under Any Light Source Direction by Learning of Surface Reflectance with Neural Network Haruki KAWANAKA, Yuji IWAHORI, Robert J. WOODHAM, Kenji FUNAHASHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have proposed Neural Network Based Rendering to generate a realistic virtual image of an object under any light source direction and any viewing direction, according to the physical reflectance property of an actual object. This method can generate a realistic virtual image of an object which has non-Lambertian reflectance without assuming some parametric reflectance function. However, the method requires many learning data by taking the various phase angles to achieve the effective learning of the neural network, that is, many images are required to learn the reflectance property with changing the light source directions. In the previous method, we used the angle between the light source direction and the viewing direction as one of the input data. Instead, the proposed method uses the angle between a unit vector which has the specular reflection to the viewing direction for each light source direction and a surface normal vector at each point of the object. The number of the images (light sources) can be reduced and the dense sampling for the learning can be achieved. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Neural Network / Virtual Image Generation / Mixed Reality |
| Paper # | SIP2006-73,SIS2006-36,SP2006-59 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2006/9/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Smart Info-Media Systems (SIS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Image Rendering under Any Light Source Direction by Learning of Surface Reflectance with Neural Network |
| Sub Title (in English) | |
| Keyword(1) | Neural Network |
| Keyword(2) | Virtual Image Generation |
| Keyword(3) | Mixed Reality |
| 1st Author's Name | Haruki KAWANAKA |
| 1st Author's Affiliation | Faculty of Info. Sci. and Tech., Aichi Prefectural Univ.() |
| 2nd Author's Name | Yuji IWAHORI |
| 2nd Author's Affiliation | Faculty of Eng., Chubu Univ. |
| 3rd Author's Name | Robert J. WOODHAM |
| 3rd Author's Affiliation | Dept. of Comp. Sci., Univ. of British Columbia |
| 4th Author's Name | Kenji FUNAHASHI |
| 4th Author's Affiliation | Grad. School of Eng., Nagoya Institute of Technology |
| Date | 2006/9/20 |
| Paper # | SIP2006-73,SIS2006-36,SP2006-59 |
| Volume (vol) | vol.106 |
| Number (no) | 262 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |