| 摘要 |
<p>A video encoder (600), decoder (700), and methods (200, 300, 400, 500) for watermarking video content are disclosed; the encoder including a quantization unit (630) for quantizing coefficients of the video bitstream, and an embedding unit (635) 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 (715) 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 (720) in signal communication with the detection unit for inverse-quantizing coefficients of the video bitstream.</p> |
