Search a circular area in a bitmap

From: brutos27 <brutos27CHIOCCIOLINAvirgilioPUNTOit>
Date: Thu, 14 Sep 2006 10:37:15 +0200

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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