Average thickness measurement

[lordsathish]

Hi Ppl,

I have to measure the average thickness of the particles in an image. After thresholding the image I have a few particles in the image, for which I have to measure the average thickness. These particles are not of regular shape. I was not able to find a particle measurement parameter that will give the average thickness of the particle. Is there any good way to do this  ?

Thanks 

[muks]

Post a few images. Did you try clamp? edge detection since you want only the average thickness

[lordsathish]

This is the Particle that I get after thresholding.

Message Edited by lordsathish on 10-29-2009 07:35 AM

[muks]

There is also a white isolated particle. I dont think you can consider that

[lordsathish]

Yeah, But is it possible to measure the average thickness of the rest of the particle ?

[BruceAmmons]

One way I see that might work is using a rake to find the first and last edges going across the particle.  If you set the spacing to two or three lines, you would have a pretty good idea of how wide the particle is.  Average all the usable values to get the average thickness.

Another way would be to count all the pixels in the particle, measure the length of the particle, then divide to get the avg. number of pixel wide.  This would ignore black pixels within the particle, though.

Bruce