| Presentation | 2013-03-11 Fundamental Study of Estimating the Light Source Position by Comparing the 3D Reconstruction Obtained from RGB Image with Depth Image Tomoki Hayashida, Shohei Takahashi, Takeshi Okuya, Jun Ohya, Harumi Kawamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a method for estimating the light source direction from RGB image and Depth image (K-D image), which can be acquired by Kinect sensor etc. The proposed method utilizes the property that the 3D reconstructed result, which is obtained by converting the RGB image to gray-level image and then converting that gray-level image to depth image (D-D image) by Khan et al. 's method based on "Deep is dark paradigm", is deformed to the light source direction. The value difference at each pixel of the D-D image and K-D image is obtained, and that pixel's surface normal is computed from the K-D image. In the 2D space defined by the two angle parameters that represent the surface normal's direction, each pixel's difiFerence is added to the cell that corresponds to that pixel's normal's direction. After this process is performed for all the pixels, the light source direction is determined based on the peak in the parameter space. Experiments using some diflferent objects under different light source directions were performed. Promising results were obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Light Estimation / 3D Reconstruction / Augmented reality / image compisition |
| Paper # | IMQ2012-60,IE2012-164,MVE2012-121,WIT2012-70 |
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| Conference Information | |
| Committee | MVE |
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| Conference Date | 2013/3/4(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Media Experience and Virtual Environment (MVE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fundamental Study of Estimating the Light Source Position by Comparing the 3D Reconstruction Obtained from RGB Image with Depth Image |
| Sub Title (in English) | |
| Keyword(1) | Light Estimation |
| Keyword(2) | 3D Reconstruction |
| Keyword(3) | Augmented reality |
| Keyword(4) | image compisition |
| 1st Author's Name | Tomoki Hayashida |
| 1st Author's Affiliation | School of Fundamental Science and Engineering, Waseda Univ.() |
| 2nd Author's Name | Shohei Takahashi |
| 2nd Author's Affiliation | Graduate School of Global Inatformion and Telecommunication Studies, Waseda University |
| 3rd Author's Name | Takeshi Okuya |
| 3rd Author's Affiliation | Graduate School of Fundamental Science and Engineering, Waseda University |
| 4th Author's Name | Jun Ohya |
| 4th Author's Affiliation | Graduate School of Global Inatformion and Telecommunication Studies, Waseda University |
| 5th Author's Name | Harumi Kawamura |
| 5th Author's Affiliation | NTT Media Intelligence Laboratories |
| Date | 2013-03-11 |
| Paper # | IMQ2012-60,IE2012-164,MVE2012-121,WIT2012-70 |
| Volume (vol) | vol.112 |
| Number (no) | 474 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |