Title :
A new design of 2-D nonseparable hexagonal quadrature-mirror filter banks
Author :
Xu, H. ; Lu, W.-S. ; Antoniou, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
A new design method for 2-D nonseparable hexagonal quadrature mirror filter banks is proposed. The new method involves minimizing an objective function containing two error terms, one dealing with the perfect reconstruction condition and the other with intra-band aliasing. The method makes full use of the symmetry of hexagonal FIR filters, which leads to a considerable reduction in the amount of computation required by the optimization. This method is compared with one proposed by Simoncelli and Adelson (1990) and is shown to yield superior results
Keywords :
digital filters; filtering and prediction theory; two-dimensional digital filters; 2-D nonseparable hexagonal QMF; error terms; hexagonal FIR filters; intra-band aliasing; objective function; optimization; perfect reconstruction condition; quadrature-mirror filter banks; Algorithm design and analysis; Channel bank filters; Design methodology; Filter bank; Finite impulse response filter; Frequency; Mirrors; Sampling methods; Signal processing algorithms; Two dimensional displays;
Conference_Titel :
Electrical and Computer Engineering, 1993. Canadian Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-2416-1
DOI :
10.1109/CCECE.1993.332242
