A digital watermarking algorithm is proposed based on good performance of chaotic sequence.Which combinations chaotic sequence with principle component analysis（PCA）.Firstly,PCA transform is used to remove noise and extract principle components of image,which can most represents image features.Then chaotic sequence is generated as digital watermarking.Watermarking is embedded in principal component coefficient.Experimental results show that the proposed scheme has good imperceptibility and good robustness against some usual atta...
