Title :
Minimum mean square error FIR filter banks with arbitrary filter lengths
Author :
Hjørungnes, Are ; Coward, Helge ; Ramstad, Tor A.
Author_Institution :
Dept. of Telecommun., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
fDate :
6/21/1905 12:00:00 AM
Abstract :
The performance of subband image coders depends on the proper choice of filter banks. It is therefore desirable to find algorithms for optimizing the filter banks. A theory for finding jointly optimized analysis and synthesis filter banks with arbitrary filter lengths and arbitrary delay through the filter bank is proposed. Theoretical results are included. Comparisons are made against the well known 5/3, 9/7, and 10/18 wavelets. The proposed filter banks, which are both rare and source dependent, have a better distortion rate performance for all cases
Keywords :
FIR filters; image coding; wavelet transforms; arbitrary delay; arbitrary filter lengths; distortion rate performance; jointly optimized analysis filter banks; jointly optimized synthesis filter banks; minimum mean square error FIR filter banks; optimization algorithms; subband image coder; wavelets; Constraint optimization; Delay; Electronic mail; Filter bank; Filtering theory; Finite impulse response filter; Frequency; Image coding; Mean square error methods; Signal synthesis;
Conference_Titel :
Image Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-7803-5467-2
DOI :
10.1109/ICIP.1999.821706
