An Improved DWT-Watermarking Algorithm based on HVS Model
Jie Zhao · Microcomputer Information · 2011
Today we have made rapid progress to develop algorithm of video watermarked in order to protect the copyright of media.Because of Potential applications and High complexity more developers are attracted to research on the algorithm of original domain.In this paper,we developed an improved algorithm based on HVS model which can best reflect the invisibility of watermarked video.First,we do four wavelet transforms and use the HVS formula to calculate the embedding strength of every point in the whole picture.Then we choose the first N biggest point and map them to the coefficients of second wavelet.The result shows that this algorithm can resist the compression of MPEG,cut and so on.