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View Full Version : need help in thresholding in edge detection


bambo
08-02-2007, 11:00 PM
hi guys..... i need some advice about how i calculate threshold in edg
detection... i'm using kirsh compass operator.... i have read in some we
about how to calculate the threshold.... but i dont really understan
about it could anyone explain to me about this thresholding ?
http://en.wikipedia.org/wiki/Adaptive_thresholding
from that wikipedia source i dont understand in step 2... should i sum th
pixel n average them ??? is it just like that ??

and... i dont really know what is the use of that compass operator fo
sure.... i was thinking it just about the degree...

but i dont really know what exactly the use of that compass... coul
anyone explain it to me ???