How to find a particular region (disease attacked part)of an image.

http://tinypic.com/r/315xsph/5................. you can see the image present in the link mentioned here. What techniques can be used to get the parts displayed inside the red ring.. Can we use FCM?

Answer 1

[Image Analyst]

How would fuzzy c means work? What would be the parameter? The only thing I can think of is to assume the right and left lung should have roughly the same perimeter and area and compare them. Or else get the perimeter coordinates and look for "kinks" in them. You can use Roger's code for that: http://matlab.wikia.com/wiki/FAQ#How_do_I_find_.22kinks.22_in_a_curve.3F

[Sivakumaran Chandrasekaran]

can we use the technique "intensity" and locate it. Objective is to find whether it is affected by disease or not.

[Image Analyst]

"intensity" is not a technique. It is a property of a pixel. I assume you meant thresholding. No, thresholding won't work because you can see that there are other pixels in the image with the same intensity.

[Sivakumaran Chandrasekaran]

s. so, which idea will work out for this ? can you suggest me

[Image Analyst]

I did suggest something - two things in fact. Did you read my answer? If you don't like that answer, you're free to check VisionBib for published algorithms.

[Sivakumaran Chandrasekaran]

ok