A Robust Image Watermarking Scheme Using Image Edge Information and Particle Swarm Optimization
碩士 === 國立高雄大學 === 電機工程學系碩士班 === 99 === Protection of digital multimedia content is an important issue for server and supplier of digital content. Digital watermarking is an important technique for copyright protection of content. However, it is difficult to implement a robust watermarking scheme. In...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/71285838544604291621 |
| Summary: | 碩士 === 國立高雄大學 === 電機工程學系碩士班 === 99 === Protection of digital multimedia content is an important issue for server and supplier of digital content. Digital watermarking is an important technique for copyright protection of content. However, it is difficult to implement a robust watermarking scheme. In this paper, we propose a robust digital watermarking scheme which hybrids discrete wavelet transform and singular value decomposition. The edge information in an image is utilized to embed the watermark. In addition, the particle swarm optimization technique is used to search the appropriate scaling factor. Experimental results are provided to illustrate that the proposed approach is able to withstand a variety of image-processing attacks.
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