DocumentCode
304775
Title
Smoothness-constrained wavelet image compression
Author
Carey, W. Knon ; Hemami, Sheila S. ; Heller, Peter N.
Author_Institution
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
Volume
1
fYear
1996
fDate
16-19 Sep 1996
Firstpage
569
Abstract
The uniform quantizers used in typical wavelet image compression algorithms can introduce perceptually disturbing artifacts by decreasing visual smoothness. In this paper, we use local Holder regularity to quantify changes in visual smoothness and propose a modified quantization scheme which constrains local regularity decreases. The reconstructed images show a significant perceptual improvement as well as an increased PSNR
Keywords
data compression; image coding; image reconstruction; quantisation (signal); smoothing methods; transform coding; visual perception; wavelet transforms; increased PSNR; local Holder regularity; modified quantization scheme; perceptually disturbing artifacts; reconstructed images; smoothness-constrained quantisation; uniform quantizers; visual smoothness; wavelet image compression; Algorithm design and analysis; Bit rate; Compression algorithms; Continuous wavelet transforms; Image coding; Image reconstruction; PSNR; Quantization; Wavelet coefficients; Wavelet transforms;
fLanguage
English
Publisher
ieee
Conference_Titel
Image Processing, 1996. Proceedings., International Conference on
Conference_Location
Lausanne
Print_ISBN
0-7803-3259-8
Type
conf
DOI
10.1109/ICIP.1996.560923
Filename
560923
Link To Document