Title :
A RSC Invariant Watermarking Scheme Utilizing Image Normalization for Synchronization
Author :
Jianzhen, Wu ; Hongqin, Li
Author_Institution :
Dept. of Autom., Shanghai Univ. of Eng. Sci., Shanghai, China
Abstract :
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.
Keywords :
affine transforms; discrete wavelet transforms; feature extraction; image coding; image watermarking; mesh generation; synchronisation; Delaunay triangle; JPEG compression; RSC invariant watermarking scheme; affine transform; discrete wavelet transform; image normalization; invariant Harris feature point detector; rotation scaling and cropping invariant watermarking; synchronization; Detectors; Feature extraction; Noise; Robustness; Synchronization; Transforms; Watermarking; Harris detector; gemotric attacks; image normalization; robust; watermark synchronization;
Conference_Titel :
Multimedia Information Networking and Security (MINES), 2010 International Conference on
Conference_Location :
Nanjing, Jiangsu
Print_ISBN :
978-1-4244-8626-7
Electronic_ISBN :
978-0-7695-4258-4
DOI :
10.1109/MINES.2010.82
