How to segment part of an image

Im trying to segment a Brain MRI tumor just so that the tumor is showing and the rest of the image is black.

here is what I have so far from my code:

 EDU>> T = imread('Image_1.jpg');
EDU>> B = im2bw(T);
EDU>> imshow(B)
EDU>> V = bwareaopen(B,1000);
EDU>> imshow(V)

The image is a brain with a Tumor. I am trying to segment the Tumor so I can have only the tumor showing. Please help.

Answer 1

[Image Analyst]

A primitive algorithm like this will probably rarely work satisfactorily and won't work robustly over a wide variety of images. Do you really think any good algorithm can find tumors with only 2 lines of code ? I suggest you look over published algorithms for one that is better: http://iris.usc.edu/Vision-Notes/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models

[Helsa]

The code up their is what I have so far I need help with figuring out what to do next. Do I need to use a loop?

[Image Analyst]

Uh, yeah... sure. Go for it. Of course you could try this approach.