【摘要】 介绍一种基于整数小波变换和混沌映射的盲数字水印技术。利用广义Arnold混沌映射对水印图像进行置乱,利用整数小波变换对载体图像进行三级小波分解,然后用Logistic混沌映射随机产生各水印比特嵌入第二层高频部分HH2中整数小波系数的比特位置。水印的提取不需要原始图像。实验结果表明该算法嵌入的数字水印既有很好的隐蔽性,又能抵抗剪切和JPEG压缩的攻击更多还原

【Abstract】 The paper presents a blind watermarking algorithm based on integer wavelet transform and chaotic map.The proposed scheme utilized general Arnold chaotic map to disarranged the watermark and computed three-levels integer wavelet decomposition of the host image.Then Logistic chaotic map is utilized to generate watermarks embedding bit positions of the diagonal detail at the second resolution level.The original image is not required for detecting the watermarks.The experimental results demonstrate that the embedded watermarks are invisible and this proposed watermarking algorithm is robust against cutting and though compressed by JPEG.更多还原