Paper Abstract and Keywords |
Presentation |
2015-01-29 13:45
Introduction of concatenated codes for digital watermarking Nobuhiro Hirata, Masaki Kawamura (Yamaguchi Univ.) EMM2014-75 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We show that concatenated codes, which are combinations of error-correcting codes, can improve performance of watermarking.
In digital image watermarking, it is required to achieve high quality image and to extract watermarks with few errors.
The way to extract them without errors is to introduce error-correcting codes.
However, image quality becomes worse due to increasing the code length of watermarks.
Therefore, we want to use such error-correcting codes that they have high capability of error-correcting but their code length is short.
We introduce concatenated codes.
By combining two error-correcting codes, the codes can have high capability of error-correcting, and also their code length can be shorter.
In this report, we evaluated some combinations of error-correcting codes, e.g., BCH, Reed-solomon, Sourlas and LDPC codes, in order to choose best combination.
In the result, the combination of BCH and LDPC codes is the best concatenated code.
This concatenated code can improve PSNR by $2.48$ dB and its code length can be $34.6%$ shorter than one of hitherto proposed method which uses both LDPC and repetition codes. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
digital watermark / concatenated codes / BCH codes / Reed-solomon codes / Sourlas codes / LDPC codes / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 424, EMM2014-75, pp. 51-56, Jan. 2015. |
Paper # |
EMM2014-75 |
Date of Issue |
2015-01-21 (EMM) |
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) |
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EMM2014-75 |
Conference Information |
Committee |
EMM |
Conference Date |
2015-01-28 - 2015-01-29 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tohoku University |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
EMM |
Conference Code |
2015-01-EMM |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Introduction of concatenated codes for digital watermarking |
Sub Title (in English) |
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Keyword(1) |
digital watermark |
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concatenated codes |
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BCH codes |
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Reed-solomon codes |
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Sourlas codes |
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LDPC codes |
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1st Author's Name |
Nobuhiro Hirata |
1st Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
2nd Author's Name |
Masaki Kawamura |
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Yamaguchi University (Yamaguchi Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-01-29 13:45:00 |
Presentation Time |
30 minutes |
Registration for |
EMM |
Paper # |
EMM2014-75 |
Volume (vol) |
vol.114 |
Number (no) |
no.424 |
Page |
pp.51-56 |
#Pages |
6 |
Date of Issue |
2015-01-21 (EMM) |
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