effective particle separation

[lenienter]

Hi, all

I came across a problem of separating particles connecting together in a image. i attached the figures and diagram. Particle A, B, C and D should separate particles, and such is the case for other particles. i checked the forum, there is one thread said that the Gaussian or Laplacian filters can be used in this case. see:

http://forums.ni.com/t5/Machine-Vision/separation-of-particles/m-p/322071

But i tried several times, i still could not get the ideal result.

I am not sure whether it is ok to use user-defined filters. Because i don't whether the area of these particles after filtering will change or not.

cheers

[KevinC]

I think you may want to try using the Watershed algorithm. See this page for some advice on how to get started:

http://zone.ni.com/reference/en-XX/help/370281M-01/nivisionlvbasics/improve_the_binary_image/

[lenienter]

Hi, thank you very much for your reply. it is very helpful. however, my problem is still there. the separation efficiency is not so good.

i prefer to use the IMAQ separation, but the proper number of erosion is hard to get.

[ZachAttack]

It looks like with the amount of overlap between particles, you may not be able to separate the particles without significantly changing the area of the particles.

[lenienter]

i checked that it is not possible to effectively separate the particles. alternatively, i used the mathematical model in this case. this is out of the scope of vision.