Digital Watermark Algorithm for Color Images Based on HVS
Chang Jian-ping · Jisuanji gongcheng · 2007
A digital watermark algorithm by embedding a color digital watermark into an original color image is discussed.The algorithm inserts the watermarks according to the significance of subbands based on DWT and HVS,i.e.the watermarks should be embedded in the low frequency subbands,and the remains of the watermarks should be embedded in the high frequency subbands according to the significance of subbands.The simulation results demonstrate that the algorithm is robust and the extracted watermark has low visual distortion.