| Presentation | 2008-02-29 a digital watermarking and its new decoding method with LDPC codes, having clipping tolerance : an application of cyclic LDPC codes and decoding using detailed reliability information Isao ABE, artinez-Noriega R., Hyunho KANG, Brian KURKOSKI, Kazuhiko YAMAGUTI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | One of the important requirements for digital watermarking is robustness against clipping attacks. Especially for audio data, an attacker can clip a part of the audio data, or shift the synchronization intentionally. One of the other powerful attacks is MP3 compression. The watermark system should have robustness against MP3 compression with certain bit rates as well as clipping attack. In this study, we propose a watermarking method which has robustness against such a clipping attack and de-synchronization based on cyclic property of error correcting code as the cyclically permutable code. To obtain high reliability of watermarking, we use LDPC code with the cyclic property. In the extracting stage of the watermark data, we apply sum-product decoding algorithm using multidimensional soft-information. In the soft-information, we newly apply power spectrum analysis of audio data with ordinary one. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | watermark / LDPC code / clipping / Sum-Product decoding / soft-information |
| Paper # | IT2007-61,ISEC2007-158,WBS2007-92 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2008/2/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | a digital watermarking and its new decoding method with LDPC codes, having clipping tolerance : an application of cyclic LDPC codes and decoding using detailed reliability information |
| Sub Title (in English) | |
| Keyword(1) | watermark |
| Keyword(2) | LDPC code |
| Keyword(3) | clipping |
| Keyword(4) | Sum-Product decoding |
| Keyword(5) | soft-information |
| 1st Author's Name | Isao ABE |
| 1st Author's Affiliation | The University of Electro-Communications() |
| 2nd Author's Name | artinez-Noriega R. |
| 2nd Author's Affiliation | The University of Electro-Communications |
| 3rd Author's Name | Hyunho KANG |
| 3rd Author's Affiliation | The University of Electro-Communications |
| 4th Author's Name | Brian KURKOSKI |
| 4th Author's Affiliation | The University of Electro-Communications |
| 5th Author's Name | Kazuhiko YAMAGUTI |
| 5th Author's Affiliation | The University of Electro-Communications |
| Date | 2008-02-29 |
| Paper # | IT2007-61,ISEC2007-158,WBS2007-92 |
| Volume (vol) | vol.107 |
| Number (no) | 501 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |