Re: Canny edge detection and close contours

I don't think you're guaranteed of getting closed contours. Here's a
good tutorial with code:
http://www.pages.drexel.edu/~nk752/Research/cannyTut2.html
Regards,
ImageAnalyst

====================================================
On Apr 5, 7:41 am, eleutheroskaiwra...@xxxxxxxxxxxxxx wrote:
Is it a definite must for Canny edge detection to produce an image
with closed contours? I found a C++ source code on the net that
produces an edge image one pixel thick with few gaps here and there,
and my colleague said that it shouldn't. I could go ahead and ignore
her view and move on with my project because I do not anticipate major
problems for my goal, but I am curious is it really a necessary
feature? If it is so, could somebody point a C++ source code on the
web for Canny that they know and trust ? I don't want any family of
libraries of the OpenCV sort etc.

Many thanks.


.

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