Title :
Spatially-varying, adaptive subband image coding
Author :
Nuri, Veyis ; Bamberger, Roberto H.
Author_Institution :
Imaging Res. Lab., Washington State Univ., Pullman, WA, USA
Abstract :
In this paper, the design and analysis of adaptive subband coders is discussed. Both the analysis/synthesis filters and quantizers of the subband coding system are adapted to exploit non-stationarities of the image data. These adaptive systems are designed so that theoretical coding gain (TCG) is maximized, thereby minimizing mean-squared-error. The relative merits of adapting various components of a subband codec are investigated
Keywords :
adaptive codes; adaptive filters; band-pass filters; codecs; data compression; image coding; quantisation (signal); trellis codes; adaptive filter banks; adaptive subband image coding; adaptive systems; analysis/synthesis filters; mean-squared-error minimisation; quantizers; spatially-varying quantisation; subband codec; theoretical coding gain; trellis coded quantisation; zero-tree quantisation; Adaptive filters; Bit rate; Filter bank; Frequency; Image analysis; Image coding; Quantization; Robustness; Signal analysis; Signal synthesis;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.560836
