A Video Watermark Achievement Algorithm Based on Content of the Video Sub-Region
Huimin Zhao, Dong liang Zhang · Journal of Software · 2013
R esisting collusion attack is one of important performances of video watermark algorithm. This paper presents a novel video watermark algorithm based on the visual features of the host video. The proposed algorithm embeds watermark on the DWT coefficients of sub-regions. The mechanism of JND (just-noticeable distortion) is used to attenuate the embedding strength in the sub-region. Experimental results show the proposed scheme can effectively resist two types of linear collusion attacks while still being robust, stable and imperceptible.