Title :
A multi-start algorithm for signal adaptive subband systems [image coding]
Author :
Taubman, David ; Zakhor, Avideh
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
A method for optimizing the filter coefficients of signal adaptive subband systems, in which the polyphase transfer matrix is paraunitary, using a mean-squared-error criterion is proposed. An efficient algorithm was developed for locating numerous local optima in the coefficient space, permitting a degree of confidence in the location of globally optimal or near-optimal solutions. Both separable systems and a particular class of nonseparable filter systems are studied. The application of the algorithm to a number of images is described
Keywords :
adaptive filters; filtering and prediction theory; image coding; optimisation; filter coefficients optimisation; image coding; mean-squared-error criterion; multi-start algorithm; nonseparable filter systems; paraunitary polyphase transfer matrix; separable systems; signal adaptive subband systems; subband coding; Adaptive systems; Application software; Filters; HDTV; Hilbert space; Image coding; Image reconstruction; Optimization methods; Signal design; Video coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226213
