An edge detection operator for SAR images
G. Geling, Dan Dominic Ionescu · 1993
f! h S t M c t: ‘The detection of small linear features from S A R itnagcry is complicated by tlic presence of speckle a.nd t h r non-stationa.rity of the image (lata. A Icature detector is derived from tlic contrast ratio edge detector to rxtract linear features from SAR imagery with a constant probability or false alarm. The out-p i i t of the feature detcctor is then passed tliroiigh a thresholtled grcy levrl closure opera.tor to t h i n t.he tlet,crtecl features, conncrt ntljarrrit, linrar fcaburcs, antl remove isolatcd noisc. points and linrar fragtncmts. Thc resulting oprrators arc applicd to E I S 1 images to illustrate their cfrectivencss. Field:Computers; Image Processing; Remot,c Srnsing