Title :
Wavelet packet methods for multimedia compression and encryption
Author :
Pommer, Andreas ; Uhl, Andreas
Author_Institution :
Dept. of Sci. Comput., Salzburg Univ., Austria
Abstract :
We introduce a selective encryption scheme for visual data based on the wavelet packet representation where the structure of a randomly chosen non-stationary multi-resolution analyses (NSMRA) is encrypted only. Whereas the rate-distortion performance of the entire scheme is on an acceptable level we describe a heuristic to break the proposed scheme in linear time
Keywords :
data compression; filtering theory; image coding; image reconstruction; image representation; image resolution; multimedia systems; rate distortion theory; transform coding; video coding; wavelet transforms; NSMRA; filter permutation; image reconstruction; multimedia compression; multimedia encryption; nonstationary multi-resolution analyses; rate-distortion Performance; selective encryption; video coding; visual data; wavelet packet methods; wavelet packet representation; Application software; Cryptography; Data security; Filters; Image coding; Rate-distortion; Streaming media; TV broadcasting; Video coding; Wavelet packets;
Conference_Titel :
Communications, Computers and signal Processing, 2001. PACRIM. 2001 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-7080-5
DOI :
10.1109/PACRIM.2001.953508
