Title :
IIR filterbank for subband coding of images
Author_Institution :
Norwegian Inst. of Technol., Trondheim, Norway
Abstract :
The author presents a simple derivation of a separable two-dimensional uniform filterbank for subband coding of images. Each one-dimensional filterbank is tree-structured where the individual quadrature mirror filters are of the infinite-impulse response (IIR) type. Through the use of a combination of causal and anticausal filtering in the analysis and synthesis filter banks, respectively, perfect signal reconstruction is obtained. A subband coder model including quantization is given, and results concerning optimal filtering in a subjective sense are presented
Keywords :
decoding; encoding; filtering and prediction theory; picture processing; two-dimensional digital filters; 2D digital filters; IIR filterbank; QMF; anticausal filtering; causal filtering; image processing; infinite-impulse response; optimal filtering; quadrature mirror filters; quantization; separable two-dimensional uniform filterbank; signal reconstruction; subband coder model; subband coding; tree-structured; Band pass filters; Delay; Filter bank; Filtering; Finite impulse response filter; IIR filters; Image coding; Mirrors; Quantization; Signal analysis;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo
DOI :
10.1109/ISCAS.1988.15052
