Joint indexing and watermarking of video using color information

This paper draws significant attention to the impending need of media copyright protection for the upcoming content based video indexing and retrieval. We propose a unique technique for joint indexing and watermarking of a compressed bitstream. The method employs video segmentation of the compressed bitstream, followed by extraction of key frames. The key frames are the representative frames of the video. The features of the extracted key frames are used both for watermarking as well as an index for retrieval. Watermarking is done on luminance and chrominance samples in the compressed domain bitstream considering the sensitivities of the human visual system(HVS) to luminance and color components. This increases the robustness of the system without increasing the bit rate of the compressed video. The proposed scheme reduces computational complexity to a great extent, and also reduces the storage space.