A RSC Invariant Watermarking Scheme Utilizing Image Normalization for Synchronization
A rotation, scaling and cropping invariant watermarking scheme using image normalization is proposed in this paper. Watermark is adaptively embedded in discrete wavelet transform. Robust image feature points against rotation, scaling, noise and JPEG compression are obtained by the affine invariant Harris feature point detector and used to make the Delaunay triangle to estimate the affine transform parameters applied on the watermarked image through image normalization. Watermark extraction is carried out after watermarked image has been synchronized. Experimental results show that the proposed scheme can effectively resist rotation, scaling and cropping attacks as well as common signal processing.
image normalization Harris detector robust watermark synchronization gemotric attacks
Wu Jianzhen Li Hongqin
Department of Automation Shanghai University of Engineering Science Shanghai, China
国际会议
南京
英文
366-369
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）