摘要

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.

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