Image Watermarking Based on the Human Vision Properties and DCT Transformation

A new image watermarking algorithm based on DCT is proposed in this paper.Based on the algorithm and the pixel value of watermarks,we change or do not change the locations of two DCT coefficients in middle-band by comparing the coefficients. Based on the features of human visual system,the watermarks are embeded into the blocks which have more texture characteristics in the image to make the watermarks less visible. The experimental results show that the algorithm is effective.