| Presentation | 2013-11-25 A Near-lossless Coding by Sparcification of DOT coefficients Kazuki ITOU, Gene CHEUNG, Akira KUBOTA, Antonio ORTEGA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Near-lossless coding is of great interest in the fields of medical images, fine arts and all applications demanding high image quality. A general technique for Near-Lossless coding uses a prediction coding, and sets up the error in tolerance level in a pixel domain. Thus the optimization is performed in a pixel domain. In this paper, we propose a new Near-lossless Coding by sparcification of DCT coefficients in transform domain. We seek to minimize the weighted sum of l_0-norm of DCT coefficients. But minimizing conventional l_0-norm is in general difficult. We propose an alternative to solve the sparsification problem as an iterative reweighted l_2-norm instead. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DCT coefficients / Sparsificaton |
| Paper # | IE2013-62 |
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| Conference Information | |
| Committee | IE |
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| Conference Date | 2013/11/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Image Engineering (IE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Near-lossless Coding by Sparcification of DOT coefficients |
| Sub Title (in English) | |
| Keyword(1) | DCT coefficients |
| Keyword(2) | Sparsificaton |
| 1st Author's Name | Kazuki ITOU |
| 1st Author's Affiliation | Faculty of Engineering, Chuo University() |
| 2nd Author's Name | Gene CHEUNG |
| 2nd Author's Affiliation | Digital Content and Media Sciences Research Division, National Institute of Informatics |
| 3rd Author's Name | Akira KUBOTA |
| 3rd Author's Affiliation | Faculty of Engineering, Chuo University |
| 4th Author's Name | Antonio ORTEGA |
| 4th Author's Affiliation | Department of Electrical Engineering, University of Southern California |
| Date | 2013-11-25 |
| Paper # | IE2013-62 |
| Volume (vol) | vol.113 |
| Number (no) | 318 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |