标题：Video Watermarking Scheme Based on Spatial Relationship of DCT Coefficients
作者：Sun, Jiande; Yang, Niqing; Liu, Ju; Yang, Xiaohui; Li, Xinchao; Zhang, Lei
作者机构：[Sun, Jiande; Yang, Niqing; Liu, Ju; Yang, Xiaohui; Li, Xinchao] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China.; [Zhang, Lei 更多
会议名称：8th World Congress on Intelligent Control and Automation (WCICA)
会议日期：JUL 06-09, 2010
来源：2010 8TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION (WCICA)
关键词：Video Watermarking; DCT; Spatial Relationship; Transcoding
摘要：In this paper, a video watermarking scheme is proposed, which has high capacity and is robust against transcoding between MPEG2, MPEG4 and H. 264. In the proposed scheme, the watermark is embedded into the DCT blocks and the frames in the same GOP are watermarked with the same watermark. During the embedding, the spatial relationship of DCT coefficient between an 8*8 block and its four 4*4 sub-blocks is exploited to select out the coefficients which are affected slightly by compression and transcoding, and then, according to the textural property of each 4*4 block, the watermark is embedded into one of the selected-out DCT coefficients by even/odd quantization. In the detection, the majority voting method is used to make the watermark more robust. Simulation results show that this scheme has high watermark capacity, and it is robust to video compression and transcoding between different compression standards.