A Cauchy Distribution based Video Watermark Detection for H.264/AVC in DCT Domain
- When?
- Monday 16 May 2011, 13:30 to 14:30
- Where?
- 39BB02
- Open to:
- Staff, Students
- Speaker:
- Mr Gaobo Yang
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.
