Re: Search a circular area in a bitmap

Thanks all,
I'tring to implement hough transform with borland delphi by c code found on the web.
Do you know an open source library written in deplhi or pascal?

Bye,
Andrea


Alves ha scritto:
The Hough transform needs to know the location of edge of the objects.
So, after thresholding it's necessary use some technique for detection
edge, for example Laplacian filter.

Raj escreveu:

After thresholding, use circular hough transform to detect the circles.
HTH
brutos27 wrote:
Hi all,
I'm a beginner in image processing and I have difficult to find an
algorithm for searching circular area in a 8 bit gray scale bitmap.

I have to localize the center of four black circle in the four corner
of a bitmap.

Please help me.

Best regard
Andrea

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