Title :
Piecewise-quadratic filter for image restoration
Author :
Li, W. ; Lin, J.-N. ; Unbehauen, R.
Author_Institution :
Lehrstuhl fur Allgemeine und Theor. Elektrotech., Erlangen-Nurnberg Univ., Germany
fDate :
8/20/1998 12:00:00 AM
Abstract :
A new kind of nonlinear filter, the piecewise-quadratic (PWQ) filter, is presented. This kind of filter is based on canonical PWQ functions, and enables filtering via domain partition and local processing which is particularly suitable for processing signals with various statistical properties such as images. The application of such a filter in restoring noisy images with Gaussian and uniform noise distributions is shown
Keywords :
Gaussian noise; image restoration; nonlinear filters; Gaussian noise distribution; canonical PWQ function; domain partition; image restoration; local processing; nonlinear filter; piecewise-quadratic filter; signal processing; statistical properties; uniform noise distribution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981190
