Title :
Quadratic digital filters for image processing
Author :
Ramponi, Giovanni ; Sicuranza, Giovanni L.
Author_Institution :
Dipartimento di Elettrotechnica Elettronica Inf., Trieste Univ., Italy
fDate :
6/1/1988 12:00:00 AM
Abstract :
A class of nonlinear two-dimensional filters is presented. A matrix description is developed for such operators, and some symmetry conditions are imposed which simplify and render more effective the filter structure. A strategy for the design of filters capable of enhancing images having reduced contrast and degraded by noise is proposed
Keywords :
matrix algebra; picture processing; two-dimensional digital filters; contrast reduction; image enhancement; image processing; matrix description; noise degradation; nonlinear two-dimensional filters; quadratic digital filters; symmetry; Degradation; Digital filters; Filtering; Image processing; Image restoration; Noise reduction; Nonlinear filters; Rendering (computer graphics); Signal processing; Visual system;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
