Title :
Modeling of histogram of filtered images in subband coding of images
Author :
Rege, Priti P. ; Jog, K.S.
Author_Institution :
Gov. Coll. of Eng., Pune, India
Abstract :
A wavelet based subband coding (SEC) scheme is presented. The fullband image is split into 16 equally divided subbands by applying Daubechies wavelets as quadrature mirror filters (QMF). The histogram of all the 16 bands is computed and the spread of levels in the band is used as a measure of the information contents in the band. Bit allocation for a band is decided on the basis of predefined criterion related to the area of the histogram
Keywords :
channel bank filters; data compression; filtering theory; image coding; modulation coding; pulse code modulation; quadrature mirror filters; transform coding; wavelet transforms; Daubechies wavelets; PCM coding; QMF; bit allocation; filter banks; filtered images; fullband image; histogram; information content measure; quadrature mirror filters; subband image coding; wavelet based subband coding; Band pass filters; Bit rate; Encoding; Filter bank; Filtering; Finite impulse response filter; Histograms; Image coding; Low pass filters; Mirrors;
Conference_Titel :
TENCON 2000. Proceedings
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6355-8
DOI :
10.1109/TENCON.2000.892291
