Design of Digital Watermarking System Based on HVS in Compressed Domain

Along with the rapid development of computer and network technology, the digital product transmission is more and more frequent on the network. And it mostly transfers in compressed form. So how to ensure that digital watermarking is not erased in network transmission has become a challenge issue. A digital watermark system based on HVS is developed using Matlab in this paper. It is different from the past system based on watermarking algorithm of spatial or transform domain, the system combined with the method of double bits is proposed in this paper, and the watermark was embedded in the compressed domain. Through simulation experiments, the results show that the watermarking embedding scheme proposed here has good robustness for shearing, filtering, noise and compression.