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Forensics for digital data has become more and more important, especially for video surveillance systems. Recently, H.264/AVC has been widely applied to video surveillance systems. In this paper, we propose a novel video watermarking scheme in H.264/AVC encoder. It embeds a watermark bit by adaptively varying the number of nonzero quantized AC coefficients in a 4??4 luminance block. The deleted or...
H.264/AVC is a novel video coding standard that provides better coding efficiency than previous video coding standards. It adopts many predictive coding algorithms to improve the coding efficiency of intra and inter frames. Due to its characteristics of high compressibility, it can achieve high quality at low bit rate. Therefore, more and more applications adopt H.264/AVC codec. Nowadays, a great...
An error resilient technique using reversible data embedding in H.264/AVC aiming at recovering high quality under high loss rate is proposed. For compressed videos, since inter-frames reference previously coded frames, the error in one frame may propagate to others. In H.264/AVC, in order to achieve higher compression ratio, it adopted intra prediction to further compress intra frames. Such technique...
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