Robust Video Watermarking Using Maximum Likelihood Decoder
In this paper, a robust multiplicative video watermarking scheme is presented. The authors segment the video signal into 3-D blocks like cubes, and then apply 3-D wavelet transform to each block. The watermark is inserted through multiplying the low frequency wavelet coefficients by a constant parameter that controls the power of the watermark. The proposed watermark extraction procedure is based on the maximum likelihood rule applied to the watermarked wavelet coefficients. Multimedia watermarking has been proposed as an elegant solution to the problem of copyright protection. However, there are several other applications for watermarking, such as broadcast monitoring, fingerprinting, authentication, etc.