Title :
On application of two-dimensional AR modeling of Wigner distribution for efficient coding and effective filtering
Author :
Chen, Haiguang ; Boudreaux-Bartels, G.
Author_Institution :
Dept. of Electr. Eng., Rhode Island Univ., Kingston, RI, USA
Abstract :
The use of two-dimensional AR (autoregressive) modeling of the Wigner distribution (WD) to perform efficient coding of WD images and effective filtering of troublesome cross WD components and white noise components is demonstrated. The AR models are obtained using two-dimensional autocorrelation fitting techniques that are based on nonsymmetric half plane or quarter plane model support. The two-dimensional AR model provides an alternative time-frequency representation which can have improved time and frequency resolution, fewer cross terms, and less white noise interference. Examples demonstrating that two-dimensional AR modeling of the WD reduces the storage computation by one to two orders of magnitude are given
Keywords :
encoding; filtering and prediction theory; picture processing; white noise; WD images; Wigner distribution; autoregressive models; cross WD components; effective filtering; efficient coding; frequency resolution; time resolution; time-frequency representation; two-dimensional AR modeling; white noise components; Autocorrelation; Filtering; Image coding; Interference; Quadratic programming; Signal processing; Signal representations; Signal resolution; Time frequency analysis; Two dimensional displays; White noise;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116090
