MATLAB: Grey scale image segmentation

Question

Hi,

I'm a complete beginner here. The problem I trying to learn how to solve is recognise individual particles in greyscale SEM images. the particles are often overlaping, although edges are usually visible in the image. One the particles are recognised the the ultimate ain is to extract measurments. Looking at the various demos in the image toold box I see ways to segemnt a BW image, but overlaping particle makes that impractical in the images I have. can anyone suggest a good starting point, relevant tutorial etc.

thanks

Answer 1

To split the objects apart you need watershed or similar. Check out this link: http://cmm.ensmp.fr/~beucher/wtshed.html.

You can also check out the sample code in the demo "Marker-controlled watershed segmentation" in the Image Processing Toolbox.