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...
Guardado en:
| Autores principales: | , , |
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| Formato: | Artigo |
| Lenguaje: | Chinês |
| Publicado: |
Editorial Department of Journal on Communications
2009-01-01
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| Colección: | Tongxin xuebao |
| Materias: | |
| Acceso en línea: | http://www.joconline.com.cn/zh/article/74649278/ |
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