Paper Abstract and Keywords |
Presentation |
2017-03-06 14:30
[Poster Presentation]
Digital watermarking method using non-binary LDPC codes and its evaluation for JPEG compression Toyohiko Saeki, Takayuki Nozaki, Masaki Kawamura (Yamaguchi Univ.) EMM2016-87 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We propose digital watermarking methods using non-binary LDPC codes and evaluate their robustness against JPEG compression.
Watermarks should be correctly extracted from the compressed images. However, once the stego-images were attacked, degraded watermarks would be extracted.
Therefore, we introduce error correcting codes to correct errors.
Although the code with longer code length has better error correcting capability, it is vulnerable for clipping and the quality of the stego-image become lower.
So, we introduce non-binary LDPC codes, which has high performance with short code length, to the watermarking method.
A non-binary LDPC code is defined over extension field GF($2^m$).
The elements over the extension field can be represented by two notations: one is vector notation in $m$-dimensional binary space ${0,1}^m$.
The other is power-of-primitive element notation, $alpha^p$.
We propose two embedding methods using the vector and power notations.
Then, we evaluated the bit error rate of watermarks obtained from the compressed images.
As a result, the embedding method using vector notation had slightly better performance for JPEG compression. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
digital watermark / non-binary LDPC codes / JPEG compression / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 501, EMM2016-87, pp. 7-12, March 2017. |
Paper # |
EMM2016-87 |
Date of Issue |
2017-02-27 (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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EMM2016-87 |
Conference Information |
Committee |
EMM |
Conference Date |
2017-03-06 - 2017-03-07 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Miyakojima Marin Terminal Building (Okinawa) |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Image and Sound Quality, Metrics for Perception and Recognition, Human Auditory and Visual System, etc. |
Paper Information |
Registration To |
EMM |
Conference Code |
2017-03-EMM |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Digital watermarking method using non-binary LDPC codes and its evaluation for JPEG compression |
Sub Title (in English) |
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Keyword(1) |
digital watermark |
Keyword(2) |
non-binary LDPC codes |
Keyword(3) |
JPEG compression |
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1st Author's Name |
Toyohiko Saeki |
1st Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
2nd Author's Name |
Takayuki Nozaki |
2nd Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
3rd Author's Name |
Masaki Kawamura |
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Yamaguchi University (Yamaguchi Univ.) |
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Speaker |
Author-1 |
Date Time |
2017-03-06 14:30:00 |
Presentation Time |
60 minutes |
Registration for |
EMM |
Paper # |
EMM2016-87 |
Volume (vol) |
vol.116 |
Number (no) |
no.501 |
Page |
pp.7-12 |
#Pages |
6 |
Date of Issue |
2017-02-27 (EMM) |
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