how to display an image's colormap onto its grayscale map?

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bazinga
bazinga 2014-1-19
评论： bazinga 2014-1-30
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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回答（1 个）

Image Analyst
Image Analyst 2014-1-20
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
Walter Roberson 2014-1-30
tempImage = zeros(size(original), 'like', original);
Note: you could also use this code with no loop
tempImage = original;
tempImage(original <= threshold2 | original >= threshold) = 0;
bazinga
bazinga 2014-1-30
Oh, thank you for the shortcut :)
Yet I still get the white screen. Do you have any solution to this?

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