For the copyright protection of digital video,a novel video watermarking algorithm based on MPEG-7 contour description was proposed.The original video is spitted into a series of frame groups,for each frame in the group,the points of contour shape are described by MPEG-7,and taking advantage of hash function to calculate the Keys between those points in the 1D-DFT transform domain and the watermark signals.Then,decomposes all those contour points of each frame in one group through 2D-DFT transform and obtai...