How to remove the black background from region of interest (gray scale& RGB)

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Subha on 14 Feb 2013
Sir, i'm doing my project in image processing, i need to segment the nucleus from the histopathological image.. i've tried with colour cell segmentation code which is there in matlab help .. it works good... the thing i need is... i need to process only the gray scale value of the segmented region.. the image is as same as image in this help topic ans i've used the same code..
from the segmented region (ie segmented blue nuclei--last image)..i converted it into grayscale image and then i need to extract features such as texture (GLCM features),statistical features., and wavelet based features...
... i dont need the black background.. can u help me how to overcome this problem
Image Analyst
Image Analyst on 15 Feb 2013
No, I'm not getting into that again. We never could get you to understand what "removing the background" means. Go back to that thread and take it up with Walter, if you want. So, did you do anything with my suggestion below?

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Answers (1)

Image Analyst
Image Analyst on 15 Feb 2013
You do know about entropyfilt(), var(), mean(), conv2(), and graycomatrix() don't you?

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