摘要
数字水印技术为版权保护提供了一个有效途径。该文利用广义的Henon映射对水印图像加密,再结合DWT多分辨率特性和矩阵SVD分解后奇异值抗扰动的特点,进行数字水印的嵌入和提取。实验表明,利用本算法嵌入的数字水印保证了数字水印的不可见性,并对常见的攻击如噪声攻击、剪切攻击、旋转攻击等都有很强的鲁棒性。
Watermarking provides an efficient method for copyright protection.In this paper,we use the generalized Henon maps to encrypt the watermark.Considering the multi-solution property of DWT and anti-disturbance property of singular value after SVD decomposition,we process watermark embedding,watermark extraction.Experimental proves that the algorithm can assure good imperceptibility for watermarked image and the watermarks embedded using the algorithm have good robustness for familiar attacks like noise attacks,crop attacks,rotation attacks etc.
基金
国家自然科学基金资助项目(60971046)
