Scene-based watermarking method for copy protection using image complexity and motion vector amplitude

In this paper we propose a new watermarking method based on scene segmentation for copy protection in hard disk drive embedded digital broadcast receivers. First, video sequence is segmented as scenes using the macroblock types of B-picture in the MPEG compressed domain. Second, for each scene, different embedding parameters are determined from the image complexity and motion vector amplitude. For copy protection, copy control watermark information is embedded in the content whether the content is copyrighted or not. By using this method, invisibility and robustness of watermark, which are the basic requirements of watermarks, are satisfied at the same time.