Abstract: In order to achieve the purpose of copyright protection, this paper proposes a video zerowatermark algorithm based on the combination of the life game scrambling with Contourlet transform, which has been known as the optimal solution of twodimensional signal processing. The algorithm uses the advantage of Contourlet to process the key frame and gets the lowfrequency coefficients, then combines the rules of the life game to generate feature image with core algorithm, and uses encryption algorithm to make pretreatment for watermark in order to enhance security. Experimental results show that the algorithm is a good compromise between invisibility and robustness, and can effectively resist the common geometric attacks and video attacks.

Key words: Contourlet transform, video watermark, zerowatermark, life game