Title :
A Cauchy distribution based video watermark detection for H.264/AVC in DCT domain
Author :
Chen, Lina ; Yang, Gaobo ; Ho, Anthony Tony
Author_Institution :
Coll. of Comput. & Commun., Hunan Univ., Changsha, China
Abstract :
Compared with Generalized Gaussian distribution (GGD), Cauchy distribution is superior to describe the statistical distribution of the Intra-coded DCT coefficients in H.264/AVC For the bipolar additive watermark in H.264/AVC video stream, a Cauchy distribution based detection algorithm is proposed by ternary hypothesis testing. Experimental results show that the proposed approach can achieve more than 80% on average for the accuracy of watermark detection.
Keywords :
adaptive codes; discrete cosine transforms; statistical distributions; video coding; video streaming; video watermarking; AVC; Cauchy distribution; DCT; H.264; bipolar additive watermark; intracoded coefficients; statistical distribution; video stream; video watermark detection; Additives; Discrete cosine transforms; Maximum likelihood estimation; Robustness; Streaming media; Testing; Watermarking;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5938153
