how to delete some part of an image?

Who knows how can I delete specified part of this image or turn it in to black?

Answer 1

[Image Analyst]

Call imerode() or imopen() to detach it. Then you might want to use bwareafilt() to take just the largest blob.

[farzin]

can U give me some examples plz? i am noob to matlab. tnx a lot.

[Image Analyst]

Post your binary image without the red stuff.

binaryImage = imopen(binaryImage, true(3)); % Get rid of thin stuff and break apart blobs.
binaryImage = bwareafilt(binaryImage, 1); % Take largest blob in case there is left over thin stuff.

[farzin]

tanQ so much. is there any way to remove that black thing and turn it to white?

[Image Analyst]

binaryImage = imfill(binaryImage, 'holes');

[farzin]

tanx a lot. i want to detect prostate cancer in mri images. can U suggest me some examples or website for start?

[Image Analyst]

Try Vision Bibliography or PubMed