| Presentation | 2012-03-30 Shadow Removal with Little Color Shift using Chromaticity Plane and Poisson Equation Yasuyuki KOBASHI, Tetsu MATSUKAWA, Yoichi SATO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Shadow removal technique is required for several computer vision algorithms to improve their accuracies. This paper introduces a new method for shadow detection and removal which uses a chromaticity plane derived from a physical model that considers ambient and direct illuminations. For estimating the chromaticity plane from a single image, we propose and estimation method that uses entropy minimization of shadow and non-shadow regions segmented by mean-sift. From the estimated shadow and non-shadowed regions, we determine shadow boundaries. Using these results, we tried to reconstruct a shadow free image by suppressing the change of brightness of shadow boundaries by using poisson equation. Because the chromaticity is kept during the reconstruction step, the shadow removal results with little color shift were obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | shadow removal / chromaticity plane / poisson equation |
| Paper # | PRMU2011-272,HIP2011-100 |
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| Conference Information | |
| Committee | HIP |
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| Conference Date | 2012/3/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Human Information Processing (HIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Shadow Removal with Little Color Shift using Chromaticity Plane and Poisson Equation |
| Sub Title (in English) | |
| Keyword(1) | shadow removal |
| Keyword(2) | chromaticity plane |
| Keyword(3) | poisson equation |
| 1st Author's Name | Yasuyuki KOBASHI |
| 1st Author's Affiliation | Institute of Industrial Science, The University of Tokyo() |
| 2nd Author's Name | Tetsu MATSUKAWA |
| 2nd Author's Affiliation | Institute of Industrial Science, The University of Tokyo |
| 3rd Author's Name | Yoichi SATO |
| 3rd Author's Affiliation | Institute of Industrial Science, The University of Tokyo |
| Date | 2012-03-30 |
| Paper # | PRMU2011-272,HIP2011-100 |
| Volume (vol) | vol.111 |
| Number (no) | 500 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |