DocumentCode :
696731
Title :
Watermarking using complex wavelets with resistance to geometric distortion
Author :
Loo, Patrick ; Kingsbury, Nick
Author_Institution :
Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom
fYear :
2000
fDate :
4-8 Sept. 2000
Firstpage :
1
Lastpage :
4
Abstract :
We present a watermarking algorithm in the complex wavelet domain and show why complex wavelets are better than real wavelets. Being an oversampled transform, the Complex Wavelet Transform requires special precautions during watermark embedding. We then model the watermarking process as a communcation channel and our results show that the complex wavelets domain has relatively higher capacity than both the spatial and the real wavelets domains. We will also outline a motion-based algorithm for image registration, which can help recovering watermarks from images suffering from geometric distortion.
Keywords :
Continuous wavelet transforms; Discrete wavelet transforms; Noise; Watermarking; Wavelet domain;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference, 2000 10th European
Conference_Location :
Tampere, Finland
Print_ISBN :
978-952-1504-43-3
Type :
conf
Filename :
7075352
Link To Document :
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