Title :
Nonlinear point operators for edge detection
Author :
Sun, X.Z. ; Venetsanopoulos, A.N.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
fDate :
7/1/1986 12:00:00 AM
Abstract :
An edge detection scheme is proposed. This scheme employs a nonlinear point operator, followed by a usual edge detector, e.g. the Sobel edge detector. Three point operator functions are defined and their effects on edge detection are analyzed. The performance of the Sobel edge detector and the nonlinear point operators in the presence of noise is evaluated. Examples of simulated and actual images are given, and the results show that a suitable point operator can improve the edge detection process.
Keywords :
picture processing; Sobel edge detector; actual images; edge detection scheme; image processing; noise effects; nonlinear point operator; scene analysis; simulated images; Approximation methods; Detectors; Histograms; Image edge detection; Noise; Standards; Sun;
Journal_Title :
Electrical Engineering Journal, Canadian
DOI :
10.1109/CEEJ.1986.6594044
