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| Presentation | 2013-11-25 14:25 A Near-lossless Coding by Sparcification of DCT coefficients Kazuki Itou (Chuo Univ.), Gene Cheung (NII), Akira Kubota (Chuo Univ.), Antonio Ortega (USC)  IE2013-62 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | DCT coefficients / Sparsificaton / / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 318, IE2013-62, pp. 5-8, Nov. 2013. | |
| Paper # | IE2013-62 | |
| Date of Issue | 2013-11-18 (IE) | |
| 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 | IE2013-62 |
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| Conference Information | |
| Committee | IE ITE-AIT ITE-ME |
| Conference Date | 2013-11-25 - 2013-11-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kurume National College of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | IE |
| Conference Code | 2013-11-IE-AIT-ME |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Near-lossless Coding by Sparcification of DCT coefficients |
| Sub Title (in English) | |
| Keyword(1) | DCT coefficients |
| Keyword(2) | Sparsificaton |
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| 1st Author's Name | Kazuki Itou |
| 1st Author's Affiliation | Chuo University (Chuo Univ.) |
| 2nd Author's Name | Gene Cheung |
| 2nd Author's Affiliation | National Institute of Informatics (NII) |
| 3rd Author's Name | Akira Kubota |
| 3rd Author's Affiliation | Chuo University (Chuo Univ.) |
| 4th Author's Name | Antonio Ortega |
| 4th Author's Affiliation | University of Southern California (USC) |
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| Speaker | Author-1 |
| Date Time | 2013-11-25 14:25:00 |
| Presentation Time | 25 minutes |
| Registration for | IE |
| Paper # | IE2013-62 |
| Volume (vol) | vol.113 |
| Number (no) | no.318 |
| Page | pp.5-8 |
| #Pages | 4 |
| Date of Issue | 2013-11-18 (IE) |
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