A Color Image Blind Watermarking Algorithm Based on Chaotic Scrambling and Integer Wavelet

In the paper, a novel color image blind watermarking algorithm is proposed based on discrete chaotic map and discrete integer wavelet transform. The scrambled watermark is encrypted and embedded into the low-frequency sub-bands after four sub-images of the Y branch of original image are transformed by integer wavelet transform, and the embedded positions are determined by logistic chaotic map, this watermarking scheme can realize blind extraction. Experimental results have proved that the method is robust enough to some image process such as noising, JPEG compression and cutting.