Title :
A Robust Imagewatermarking Scheme Based on the Alpha-Beta Space
Author :
Martins, P. ; Carvalho, P.
Author_Institution :
Centre for Informatics & Syst., Coimbra Univ.
Abstract :
A robust image watermarking scheme relying on an affine invariant embedding domain is presented. The invariant space is obtained by triangulating the image using affine invariant interest points as vertices and performing an invariant triangle representation with respect to affine transformations based on the barycentric coordinates system. The watermark is encoded via quantization index modulation with an adaptive quantization step
Keywords :
adaptive codes; adaptive modulation; affine transforms; data compression; data encapsulation; image coding; image representation; modulation coding; watermarking; adaptive quantization; affine transformation; alpha-beta space; barycentric coordinate system; embedding domain; encoding; image watermarking scheme; invariant triangle representation; quantization index modulation; Computer vision; Detectors; Digital images; Fourier transforms; Informatics; Interpolation; Quantization; Resilience; Robustness; Watermarking;
Conference_Titel :
Multimedia and Expo, 2006 IEEE International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
1-4244-0366-7
Electronic_ISBN :
1-4244-0367-7
DOI :
10.1109/ICME.2006.262847
