新的改进IDCT_DWT域的可逆可见水印方法

摘要

A Pretreating template based on user-key-dependent watermark pretreatment and the corresponding embedding function, in the novel modified integer DCT_DWT, achieved the embedding of watermark and the recovery of the original image. At the same time,it compared the effect of this novel method in DWT. Experimental results showed, at the modified integer DCT_DWT, it could get higher quality image restoration which has higher PSNR, compared with the original image.%基于密钥的水印预处理模板和相应的嵌入函数在新的改进整数DCT_DWT实现水印的嵌入和原图像的恢复,同时比较了该方法在DWT域的效果.实验表明,在这种改进整数DCT_DWT域,能得到高质量的恢复图像,相对于原始图像的峰值性噪比比在DWT域的大,恢复图像的质量更好.