Error detection based on digital watermarking for MPEG-4 video coding

摘要

This paper describes a new approach for the error detection dedicated to the MPEG-4 video coding by means of the digital watermarking. Specifically, in the process of encoding the proposed scheme abstracts the macroblock features of headers, motion vectors, and DCT coefficients, which are embedded into the quantized DCT coefficients as the digital watermarks, while in the process of decoding it performs the accurate error detection through the watermark extraction. Simulation results demonstrate that the error detection ability of the proposed approach can be significantly enhanced, and that the degradation of the picture quality by the watermarking can be much reduced.