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| Presentation | 2013-03-11 14:00 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 (Waseda Univ.), Harumi Kawamura (NTT)  IMQ2012-60 IE2012-164 MVE2012-121 WIT2012-70 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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 difference 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 different objects under different light source directions were performed. Promising results were obtained. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Light Estimation / 3D Reconstruction / Augmented reality / image compisition / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 473, IE2012-164, pp. 145-150, March 2013. | |
| Paper # | IE2012-164 | |
| Date of Issue | 2013-03-04 (IMQ, IE, MVE, WIT) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | IMQ2012-60 IE2012-164 MVE2012-121 WIT2012-70 |
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| Conference Information | |
| Committee | MVE IE WIT IMQ CQ |
| Conference Date | 2013-03-11 - 2013-03-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Quality of media communication, welfare, and general topics |
| Paper Information | |
| Registration To | IE |
| Conference Code | 2013-03-MVE-IE-WIT-IMQ-CQ |
| Language | Japanese |
| 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 |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tomoki Hayashida |
| 1st Author's Affiliation | Waseda University (Waseda Univ.) |
| 2nd Author's Name | Shohei Takahashi |
| 2nd Author's Affiliation | Waseda University (Waseda Univ.) |
| 3rd Author's Name | Takeshi Okuya |
| 3rd Author's Affiliation | Waseda University (Waseda Univ.) |
| 4th Author's Name | Jun Ohya |
| 4th Author's Affiliation | Waseda University (Waseda Univ.) |
| 5th Author's Name | Harumi Kawamura |
| 5th Author's Affiliation | NTT (NTT) |
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| Speaker | Author-1 |
| Date Time | 2013-03-11 14:00:00 |
| Presentation Time | 25 minutes |
| Registration for | IE |
| Paper # | IMQ2012-60, IE2012-164, MVE2012-121, WIT2012-70 |
| Volume (vol) | vol.112 |
| Number (no) | no.472(IMQ), no.473(IE), no.474(MVE), no.475(WIT) |
| Page | pp.145-150 |
| #Pages | 6 |
| Date of Issue | 2013-03-04 (IMQ, IE, MVE, WIT) |
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