Title :
Copyright protection of still images using self-similar chaotic watermarks
Author :
Tsekeridou, Sofia ; Nikolaidis, Nibs ; Sidiropoulos, Nikos ; Pitas, Ioannis
Author_Institution :
Dept. of Inf., Aristotelian Univ. of Thessaloniki, Greece
Abstract :
A spatial domain watermarking algorithm for still images is proposed in this paper. The watermarks are generated by combining scaled versions of 2-D chaotic signals, in order to attain a self-similar structure. In addition, the 2-D chaotic signal generation procedure contains operations which ensure that lowpass watermarks are obtained. Such characteristics (lowpass spectrum, self-similarity) enable robustness against compression, lowpass filtering or, generally, distortions of lowpass nature, as well as, cropping and scaling. An additional advantage of the proposed algorithm is that the detection procedure does not require the original image
Keywords :
chaos; copy protection; data encapsulation; image coding; image recognition; 2-D chaotic signal generation procedure; copyright protection; detection procedure; lowpass spectrum; lowpass watermarks; robustness; self-similar chaotic watermarks; spatial domain watermarking algorithm; still images; Chaos; Computational complexity; Copyright protection; Data encapsulation; Filtering; Image coding; Informatics; Robustness; Signal generators; Watermarking;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.900982
