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MPEG-2 VIDEO WATERMARKING TECHNIQUE IN DC COEFFICIENT DOMAIN
MPEG-2 VIDEO WATERMARKING TECHNIQUE IN DC COEFFICIENT DOMAIN
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机译:DC系数域中的MPEG-2视频水印技术
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摘要
In one embodiment, a method, system and apparatus for watermarking MPEG-2 compressed video is described, the method, system and apparatus including detecting a pair of neighboring blocks in a MPEG-2 encoded I- frame, determining if the pair of neighboring blocks have dct_dc_differential fields with different values that are within a given threshold value of each other, and embedding a watermark payload bit in the neighboring blocks as a positive result of the determining, the embedding including ordering dct_dc_differential fields of the neighboring blocks such that ordering the dct_dc_differential fields in a first manner encodes a one bit and ordering the dct_dc_differential fields in a second manner encodes a zero bit. Related embodiments of methods, systems, and apparatuses are also described.
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