Title :
Fused watermark detection on noisy interpolated images
Author :
Giannoula, Alexia ; Boulgouris, Nikolaos V. ; Hatzinakos, Dimitrios
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
Abstract :
The case where a low-resolution image is initially watermarked and the watermark is afterwards detected on a noisy interpolated version of the watermarked image is investigated, using a correlation detector. Polyphase decomposition is utilized at the detector side in order to enable the flexible formation of a fused image, which is appropriate for watermark-detection. The optimal fused correlator, obtained by combining information from different image components, is derived through a statistical analysis of the correlation detector properties.
Keywords :
FIR filters; correlation methods; image coding; image resolution; interpolation; signal detection; statistical analysis; watermarking; FIR filters; correlation detector; fused image; fused watermark detection; low-resolution image; noisy interpolated images; polyphase decomposition; statistical analysis; Detectors; Finite impulse response filter; Image coding; Image generation; Nonlinear filters; Pixel; Random number generation; Statistical analysis; Watermarking; Working environment noise;
Conference_Titel :
Electrical and Computer Engineering, 2004. Canadian Conference on
Print_ISBN :
0-7803-8253-6
DOI :
10.1109/CCECE.2004.1345329
