DocumentCode
1157389
Title
Wavelet maxima mapping quantiser for image lowpass approximation subband coding
Author
Teow, M. ; Lee, Sze-Wei ; Chai, I.
Author_Institution
Fac. of Eng., Multimedia Univ., Cyberjaya, Malaysia
Volume
39
Issue
4
fYear
2003
fDate
2/20/2003 12:00:00 AM
Firstpage
358
Lastpage
360
Abstract
A new wavelet oriented scalar quantisation method called wavelet maxima mapping quantisation that uses the spatially adaptive wavelet maxima map to determine the quantisation index for lowpass approximation subband magnitude is proposed. Empirical analysis shows that substantial peak signal-to-noise ratio gain can be obtained at relatively low bit rate cost.
Keywords
adaptive codes; discrete wavelet transforms; image coding; image reconstruction; quantisation (signal); transform coding; adaptive arithmetic coding; discrete wavelet transform; empirical analysis; image background luminosity; image lowpass approximation subband coding; lowpass approximation subband magnitude; peak signal-to-noise ratio gain; quantisation index; reconstructed image fidelity; spatially adaptive wavelet maxima map; wavelet maxima mapping quantiser; wavelet oriented scalar quantisation method;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20030245
Filename
1184065
Link To Document