An almost simple problem (how to solve???)

[qsx1]

As you can see in the problem.png file attached, I want to input a Bitmap having a black background and some white points accumulations. I want then to find the position of only those accumulations that are in a given size range. Hence, if the regions are to small then I don't want them (in picture I draw a red circle around these unwanted regions). The green regions are the ones that satisfy my size range.

How can I implement this (in C#) using AForge.Net and findContours (and maybe using dilation and erosion to fill the empty spaces in the clusters before applying findContours)? The input is a Bitmap similar to the one attached here. The output should be a list of center coordinates for each of the accumulation.

Please help me with this problem. It is very urgent for me!!!!!!!!! Any help (sample code) would be appriciated. Thank you!!!!!!!!!

[andrew.kirillov]

Try using BlobCounter. For every found blob it will provide its size, area, etc.

[qsx1]

Before using BlobCounter I should use the FillHoles class to fill the gaps in the objects. This should work, true?

Thank you.

[andrew.kirillov]

It is up to you. BlobCounter will work anyway. If you fill holes, then only area of objects will get different, not width or height. So if area is important for you, then yes - fill all the holes.