Title :
Apriori Rate Allocation in Wavelet-Based Image Compression
Author :
Grottke, Sven ; Richter, Thomas ; Seiler, Ruedi
Author_Institution :
Centre for Multimedia in Educ. & Res., Technische Univ. Berlin
Abstract :
We present a rate allocation scheme that pre-computes optimal quantisation bucket sizes based on a mathematical model of wavelet transformed natural images prior entropy encoding. We combine the proposed scheme with the JPEG2000 embedded rate-allocator and find in our experiments that it is able to increase JPEG2000 encoding speed by a factor of two without loosing image quality
Keywords :
image coding; wavelet transforms; JPEG2000; rate allocation scheme; wavelet-based image compression; Animation; Cameras; Content based retrieval; Humans; IP networks; Image coding; Nonhomogeneous media; Real time systems; Streaming media; Technological innovation;
Conference_Titel :
Automated Production of Cross Media Content for Multi-Channel Distribution, 2006. AXMEDIS '06. Second International Conference on
Conference_Location :
Leeds
Print_ISBN :
0-7695-2625-X
DOI :
10.1109/AXMEDIS.2006.12
