基于零参考水印的多通道图像数字水印方案

针对多通道水印模型限制鲁棒水印容量和降低水印图像隐形性问题，提出基于零参考水印的多通道数字图像水印方案。该方案基于量化函数定义各水印通道的零参考水印。检测时可以提取参考水印，比较零参考水印和提取的参考水印，计算各水印通道的失真率，根据失真率计算嵌入的鲁棒水印。实验结果表明，该方案在保持水印图像隐形性的前提下，提高了水印提取准确度。

Multi-channel Image Digital Watermark Scheme Based on Zero Reference Watermark

Aiming at the problem as low robust watermark capacity and week imperceptibility of watermark images in multi-channel watermark scheme,this paper proposes a multi-channel image digital watermark scheme based on zero reference watermark.In this scheme,zero reference watermark is defined based on quantization function.During watermark detection,it extracts reference watermarks,computes distortion rates of watermark channels by comparing zero reference watermarks and the extracted reference watermarks,and comp...