Title :
Quadratic linear filters for signal detection and image segmentation
Author :
Taft, J.D. ; Bose, N.K.
Author_Institution :
Westinghouse Electr. Corp., Pittsburgh, PA, USA
Abstract :
An analysis of the quadratic-linear (QL) filter, for improving signal detection capability and facilitating image segmentation, is carried out. The principal results are the solutions for QL filters under the generalized deflection criterion and Gaussian input assumptions; the establishment of mapping order properties for two-dimensional implementations of linear, pure quadratic, and QL filters; and the definition of regions of superior performance for the QL filter as compared to linear and quadratic filters under Gaussian assumptions when the input has separated means and separated variances
Keywords :
filtering and prediction theory; picture processing; signal detection; Gaussian input assumptions; QL filters; deflection criterion; image segmentation; linear filters; mapping order properties; pure quadratic filters; quadratic linear filters; separated means; separated variances; signal detection; two-dimensional implementations; Detectors; Finite impulse response filter; Image edge detection; Image segmentation; Matched filters; Nonlinear filters; Radar detection; Signal detection; Sonar detection; Testing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.196798
