A fast watermarking algorithm with low complexity error compensation in H.264/AVC bit-stream

Watermarking algorithms in the H.264/AVC bit-stream are more efficient, but the propagation error introduced would decrease the visual quality severely. In order to reduce the computation complexity of compensation, a new error compensation method is proposed, in which the watermark is embedded into the quantized DCT coefficients and the propagation error gained by a low complexity error prediction module are compensated adaptively. The simulation results show that with the proposed compensation method, a real time video watermarking can be realized, with the features of low complexity, high PSNR and less bitrate increase. © 2013 Peking University.