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doi:10.1016/0031-3203(88)90054-4 
Copyright © 1988 Published by Elsevier Science B.V.
Generalised threshold selection for edge detection
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John F. Haddon
Received 13 July 1987;
revised 27 October 1987.
Available online 19 May 2003.
Abstract
This paper derives a generalised technique for selecting thresholds of edge strength maps from theoretical considerations of the known noise statistics of the image. A technique is described for estimating the mean and variance of the noise of an image using a pair of images. The threshold selection technique can be applied to any single digital edge operator and has been extended for use with combinations of edge operators. Two examples of thresholded edge maps using the techniques developed here are shown.
Author Keywords: Image processing; Image sequences; Edge operators; Edge detection; Threshold selection; Image noise evaluation; Infrared
