How to make the grey area completely black, so it's a binary image?

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Tawsif Mostafiz
Tawsif Mostafiz 2022-4-16
回答： DGM 2022-4-16
Hi, I have a grayscale tumor image like this:
I want to make the grey area complely dark, something like this:
(This is a mask for another image)
so that the white area remailns white, but the grey area goes dark. Is it possible?

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采纳的回答

Tala
Tala 2022-4-16
编辑：Tala 2022-4-16
you mean you want to have the whole tumor area white and the rest of the image black? just threshold your image
I=imread('image.bmp');
I2=I>250;
imshowpair(I2,I,'montage')

更多回答（1 个）

DGM
DGM 2022-4-16
Ran in:
The mask that was used to create the hole in the image is the binarized image. You shouldn't need to turn the source image into a copy of the mask.
but if you must:
A = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/966480/image.bmp');
A(A<255) = 0;
imshow(A)

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