Video Watermarking Algorithm Based on Feature points of Moving Regions
Xingfu Zhou · Microcomputer Information · 2011
The rapid development of computer communication technology makes transmission of digital multimedia information more convenient,however,the subsequent protection of information security issues become increasingly prominent.Digital watermarking is an effective methods of secret information transmission and copyright protection in open network environment.In this paper,we select the feature points in moving region within the video frames based on two-dimensional discrete wavelet transform.Modify wavelet coefficients by algorithm to achieve watermark insertion and extraction.The method uses the feature that the human eye is not sensitive to movement area and the advantages the discrete wavelet transform in image compression.After simulation,the method has good Invisibility,and can withstand the MPEG-2 compression,so it has strong robustness.