binary image to RGB image

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marlina
marlina on 5 Aug 2011
Commented: Image Analyst on 20 Jul 2020
Hi all,
I would like to know how to convert binary image to RGB. Let say, I want WHITE become RED and BLACK become GREEN. Anyone can help me please...really need any suggestion.
Thank you

Accepted Answer

Walter Roberson
Walter Roberson on 5 Aug 2011
RGBIMG = cat(3, IMG, ~IMG, zeros(size(IMG)));
  3 Comments
Srivatsan N
Srivatsan N on 20 Jul 2020
I am getting error when I try to display that image using imshow function.Can anyone help me out with this?.
Image Analyst
Image Analyst on 20 Jul 2020
Sure, just tell us what the error is
mask = false(480, 640);
mask(100:200, 150:450) = true;
subplot(2, 1, 1);
imshow(mask);
rgbImage = cat(3, mask, ~mask, zeros(size(mask)));
subplot(2, 1, 2);
imshow(rgbImage);

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