The invention discloses a self-adaptive robust video watermarking method based on AVS (Audio Video Standard), which mainly solves the problems of
high complexity, non-
blindness, great gap between the current method and the AVS, and the like in the current method. When watermarks are embedded, a
discrete cosine transformation low-frequency coefficient
visual masking value corresponding to each subblock of video frame I is firstly calculated according to a Watson model; the energy of each subblock is sequenced in a descending order; and a large-energy subblock is selected as a
watermark embedding position to be in secret
key storage.
Watermark embedding strength is controlled through the low-frequency coefficient
visual masking value in a self-adaptive manner so as to embed the watermarks. When the watermarks are extracted, the embedded watermarking subblocks are found according to the secret key at first; and then the watermarks are extracted through comparing the relation between the subblock
discrete cosine transformation low-frequency coefficient and a threshold value. In the invention, the
watermark embedding and extracting arithmetic is simple; the embedding position and strength are self-adaptive; with better transparency, robustness and real-time property, the method belongs to original
basic research work and meets the copyright protection needs of
mass video products after the large-scale popularization and commercial application of the AVS; and the method has broad market application prospect.