Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding
A semi-fragile watermark algorithm based on the Walsh-Hadamard transform and convolution coding was proposed. In this algorithm, the watermark content of the host image was extracted by differential coding and convolution coding respectively based on the image block before embedding watermark, and w...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2009-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74649278/ |
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| _version_ | 1841537661189226496 |
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| author | ZHAO Feng1 LI Jian2 LI Sheng-hong2 |
| author_facet | ZHAO Feng1 LI Jian2 LI Sheng-hong2 |
| author_sort | ZHAO Feng1 |
| collection | DOAJ |
| description | A semi-fragile watermark algorithm based on the Walsh-Hadamard transform and convolution coding was proposed. In this algorithm, the watermark content of the host image was extracted by differential coding and convolution coding respectively based on the image block before embedding watermark, and was embedded on the energy value of the host image after Walsh-Hadamard transforming. In the case of watermark detection, the tampered place of the image was located by detecting the error bits generated by convolution decoding, and its result was used to recover the tampered image. The efficiency and the influence on the host image quality of the proposed algorithm were discussed theoretically and experimentally. The experimental results show that the proposed algorithm has high robustness against lossy compression, can detect and locate the place being maliciously tampered accurately and recover the lost image content roughly. |
| format | Article |
| id | doaj-art-e134ffb9b53a49ffbbbb55f2aed3183c |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2009-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-e134ffb9b53a49ffbbbb55f2aed3183c2025-01-14T08:27:43ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2009-01-0130899574649278Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution codingZHAO Feng1LI Jian2LI Sheng-hong2A semi-fragile watermark algorithm based on the Walsh-Hadamard transform and convolution coding was proposed. In this algorithm, the watermark content of the host image was extracted by differential coding and convolution coding respectively based on the image block before embedding watermark, and was embedded on the energy value of the host image after Walsh-Hadamard transforming. In the case of watermark detection, the tampered place of the image was located by detecting the error bits generated by convolution decoding, and its result was used to recover the tampered image. The efficiency and the influence on the host image quality of the proposed algorithm were discussed theoretically and experimentally. The experimental results show that the proposed algorithm has high robustness against lossy compression, can detect and locate the place being maliciously tampered accurately and recover the lost image content roughly.http://www.joconline.com.cn/zh/article/74649278/Walsh-Hadamard transformconvolution codingsemi-fragile watermark |
| spellingShingle | ZHAO Feng1 LI Jian2 LI Sheng-hong2 Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding Tongxin xuebao Walsh-Hadamard transform convolution coding semi-fragile watermark |
| title | Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding |
| title_full | Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding |
| title_fullStr | Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding |
| title_full_unstemmed | Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding |
| title_short | Semi-fragile watermark algorithm based on Walsh-Hadamard transformand and convolution coding |
| title_sort | semi fragile watermark algorithm based on walsh hadamard transformand and convolution coding |
| topic | Walsh-Hadamard transform convolution coding semi-fragile watermark |
| url | http://www.joconline.com.cn/zh/article/74649278/ |
| work_keys_str_mv | AT zhaofeng1 semifragilewatermarkalgorithmbasedonwalshhadamardtransformandandconvolutioncoding AT lijian2 semifragilewatermarkalgorithmbasedonwalshhadamardtransformandandconvolutioncoding AT lishenghong2 semifragilewatermarkalgorithmbasedonwalshhadamardtransformandandconvolutioncoding |