How to extract the tumor region, after watershed algorithm??

I applied watershed transform for ultrasound image, resulting in 2 or 3 objects including tumor region. I need to extract true tumor region for further processing. I'm looking for an automatic one.

Thank you in advance,,

[LOKESH]

Thank you for your reply..

            The output of watershed algorithm is as shown. How to extract Features from the tumor region (ie. the above region in the image).

            If I used imclearborder built in function. I can extract the tumor region, from that features are extracted. But it'll not work in this case, because tumor region s attached to border so tumor also went off.

Please suggest some other method to extract the features from tumor region.

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Answer 1

[Image Analyst]

What do you mean "extract"? If you've segmented and have the 2 or 3 binary image blobs, just label them and call regionprops. If you really want to crop them out into separate sub images, then see my Image Segmentation Tutorial in my File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

[Image Analyst]

Regarding your new comment. If you've used watershed, it gives you a labeled image as output, so just pass that into regionprops. If you don't want to call imclearborder, then don't .