Designing OSED´s (order statistic edge detectors)

Author

Restrepo, Aljredo ; Naranjo, Alejandro ; Valderrama, Magdalenu ; Daniels, Mauricio ; De la Vega, Ramiro

Author_Institution

Univ. de Los Andes, Bogota, Colombia

Volume

2

fYear

1995

fDate

23-26 Oct 1995

Firstpage

173

Abstract

A class of order statistic filters consisting of linear combinations of moving quasiranges has been proposed for the detection of edges in images [Restrepo et al., 1994]. Here, the distributions of quasiranges are obtained, for samples containing several outliers, and used to compute statistics such as expectations, variances and probabilities of error of the corresponding quasirange. A procedure for the choice of the threshold level is given; such a threshold level determines a minimal edge contrast to be detected under acceptable SNR conditions. We give several examples for the case of window size five

Keywords

edge detection; error statistics; nonlinear filters; statistical analysis; OSED; SNR conditions; edge contrast; error probabilities; expectations; linear combinations; moving quasiranges; order statistic edge detector; order statistic filters; outliers; threshold level; variances; window size five; Additive white noise; Detectors; Distributed computing; Error analysis; Image edge detection; Nonlinear filters; Probability; Signal to noise ratio; Statistical distributions; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1995. Proceedings., International Conference on

Conference_Location

Washington, DC

Print_ISBN

0-8186-7310-9

Type

conf

DOI

10.1109/ICIP.1995.537442

Filename

537442