发明名称 |
DECODIERUNGSVERFAHREN UND -VORRICHTUNG ZUM ERKENNEN VON WASSERZEICHEN IN EINEM KOMPRIMIERTEN VIDEOBITSTROM |
摘要 |
A video encoder, decoder, and methods, for watermarking video content are disclosed; the encoder including a quantization unit for quantizing coefficients of the video bitstream, and an embedding unit in signal communication with the quantization unit for embedding bits of the digital fingerprint in blocks of the video bitstream as a function of the parity of the number of coded coefficients in the block; and the decoder including a detection unit for detecting bits of the digital fingerprint in blocks of the video bitstream as a function of the parity of the number of coded coefficients in the block, and an inverse-quantization unit in signal communication with the detection unit for inverse-quantizing coefficients of the video bitstream. |
申请公布号 |
DE602004022548(D1) |
申请公布日期 |
2009.09.24 |
申请号 |
DE20046022548T |
申请日期 |
2004.06.23 |
申请人 |
THOMSON LICENSING |
发明人 |
BOYCE, JILL MACDONALD;GIRELLINI, DANIEL RICHARD;YIN, PENG |
分类号 |
H04N7/26;G06T1/00;G10L19/00;H04N7/50 |
主分类号 |
H04N7/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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