Title :
Balanced-uncertainty optimized wavelet filters with prescribed regularity
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
The Heisenberg Uncertainty Principle dictates that a filter cannot have simultaneous localization in the spatial domain and the frequency domain: there is a trade-off between spatial and frequency localizations. In this paper the author considers a localization measure metric that has a balance between spatial and frequency localizations. The metric is called the Heisenberg Balanced-Uncertainty metric and was proposed by Monro et al. (1997). The author presents an efficient technique for designing a class of biorthogonal wavelet filters which have a prescribed regularity (number of zeros at z=-1) and are optimized with respect to the Balanced-Uncertainty metric
Keywords :
filtering theory; iterative methods; optimisation; poles and zeros; transient response; wavelet transforms; Heisenberg balanced-uncertainty metric; balanced-uncertainty optimized wavelet filters; biorthogonal wavelet filters; frequency localization; localization measure metric; prescribed regularity; spatial localization; Constraint optimization; Design optimization; Discrete wavelet transforms; Filter bank; Frequency domain analysis; Frequency measurement; Image coding; Kernel; Low pass filters; Process design;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.778900