Self-adaptive color digital image blind watermarking method
A digital image, blind watermarking technology, applied in the field of information security
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[0041] It is an object of the present invention to provide an adaptive color digital image blind watermark method, characterized in that the method includes two specific processes of watermark embedding and watermark extraction, and the watermark embedding process is as follows:
[0042] Wherein the watermark is divided into two watermark embedding and watermark extraction process, which watermark embedding process is described as follows:
[0043] Step: First, a color host image size of 512 × 512 H Divided into red, green, blue three hierarchical host images H i At the same time, each layered host image H i Is divided into non-overlapping pixel blocks of 4 × 4; color watermarked image a size of 32 × 32 W Divided into red, green, blue three layered watermark images, at the same time, in order to improve the safety of watermark, the key based on each layered watermark image is performed Ka i Solifery transformation and key based on key KB i Arnold transformation, get three layered ...
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