The video tamper detection algorithm based on semi-fragile watermark with compressive sensing
Fanzhi Zeng, Yan-Sheng Lu, Yan Zhou · Journal of Circuits and Systems · 2011
For the shortcomings of current video watermarking algorithms on tamper detection,this paper proposes a video tamper detection algorithm based on semi-fragile watermark with Compressive Sensing.The image features of I-frame are extracted by Compressed Sensing algorithm,and semi-fragile content authentication watermarks are generated.The watermarks are embedded into the middle-high-frequency coefficients of I-frame,so to implement tamper detection inner frame.Through hash operation on the index of P-frames,integrity watermarks are generated.The watermarks are embedded into the motion vectors of P-frame,so to implement tamper detection among frames.Simulation results show that the algorithm has good detection ability for video tamper among frames and inner frame,whose accuracy can reach to the sub-block of image.