A Video Watermarking Algorithm for Intraframe Tampering Detection Based Compressed Sensing
Huimin Zhao · 2013
In order to overcome the drawback of localization accuracy for intraframe tampering detection based on video watermarking, this paper proposes a novel video watermarking generation and intraframe tampering detection algorithm based on feature representation of MPEG-4(Moving Picture Experts Group-4) video content by compressed sensing(CS).First,U and V,feature parameters of I-VOP(Intra-Video Object Plane) frame,are extracted utilizing projection of DCT(Discrete Cosine Transform) measurement matrix of the CS,generate the CS-watermarking of the video content,and embed the CS-watermarking data into the coefficients of low frequency and high frequency of DCT domain in the Y component of image.Compared to Hash-watermarking generating algorithm,experiment results show that the CS-watermarking algorithm has better data recovery capability and localization accuracy for video intraframe tampering detection.