how to display an image's colormap onto its grayscale map?
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Hi everyone,
I have biomedical images (.dcm) and I need to display the colormap of each image onto its grayscale map. I.e:
Let's say my image is named as X, and Y is a processed version of X 1) imshow(X); //grayscale 2) image(Y); //colormap
These two resulting figures on top of each other.
Any suggestion would help. Thanks
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Answers (1)
Image Analyst
on 20 Jan 2014
Applying a colormap to one grayscale image will apply it to all grayscale images in all axes in the figure. Since that is usually not what you want, you can call freezecolors but it's probably easiest just to convert the grayscale image that you want to apply a colormap to, into a color image with ind2rgb():
imshow(X); % Show first gray scale image.
rgbImage = ind2rgb(Y, yourColorMap); % Convert second gray scale image into a color image.
imshow(rgbImage); % Display the color image.
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Walter Roberson
on 30 Jan 2014
tempImage = zeros(size(original), 'like', original);
Note: you could also use this code with no loop
tempImage = original;
tempImage(original <= threshold2 | original >= threshold) = 0;
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