Video Dual Watermarking Algorithm against Geometric Attack Based on ASIFT and Contourlet Transform - 源码 - 源码 - 免费下载

Video Dual Watermarking Algorithm against Geometric Attack Based on ASIFT and Contourlet Transform

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资源说明：—This study proposed a video dual watermarking algorithm based on affine-scale invariant feature transform (ASIFT) and contourlet transform. First, the human visual masking model of a 3D motion in video sequence is studied in depth. The human eye visual masking threshold is obtained as the maximum embedding intensity of watermark using various motion characteristics. Second, the high- and low-frequency sub-band coefficients of the contourlet field are obtained by contourlet transform. Chaotic wa

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