研究了用BCH码对水印进行编码,通过预处理来增加水印的鲁棒性.利用HVS计算JND值,根据JND值选择量化嵌入强度,在保证水印的鲁棒性的同时增强了水印的不可见性.最后,通过压缩、剪切等攻击实验,证明了该方法的有效性.%The use of BCH code to encode the watermark by pretreatment to increase the robustness of the watermark is studied.The strength of watermark embeding is controled by the HVS and JND in order to improve the banlence of transparency and robust.Finally,the experiments show that the algorithm can resist nomal image processing,such as compression cut,attacks and so on,and prove the validity of this method.
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