New semi-fragile watermarking algorithm based on image content authentication
一种面向图像内容认证的半脆弱数字水印算法*

This paper presented a semi-fragile watermarking algorithm based on content authentication.This algorithm used chaotic system's characteristics of randomness and ergodicity.One part was used to extract image features which would be used watermarking,the other part was used to embed the watermarking extracted from the first part.The watermarking was embedded into matrix singular value larger data.Experimental results show that algorithm achieves basic goals of semi-fragile watermarking: imperceptibility,blin...