A watermarking scheme based on wavelet transform and modular operations
碩士 === 中國文化大學 === 資訊管理研究所 === 95 === In this paper, a wavelet and modular based watermarking scheme is proposed. The variations of low frequency wavelet coefficients are computed to determine the coefficients which are suitable for watermark embedding. Then, the watermark is embedded by means of the...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/82675111890756322791 |
| Summary: | 碩士 === 中國文化大學 === 資訊管理研究所 === 95 === In this paper, a wavelet and modular based watermarking scheme is proposed. The variations of low frequency wavelet coefficients are computed to determine the coefficients which are suitable for watermark embedding. Then, the watermark is embedded by means of the modular operation. The experimental result shows that the difference between the host and the watermarked images cannot be discriminated with eyes easily. Besides, the watermark can also survive under several common attacks.
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