How to overlay a semi-transparent colorimage over a grayscale image?

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Baashaas
Baashaas 2016-6-3
回答： Image Analyst 2020-12-12
Hi all,
I would like to overlay a semi-transparent colorimage over a grayscale image (colored fMRI activity map over a structural MRI image). I tried to use colorFreeze, but if I do, for some reason I lose the transparency of the overlay image.
i = 30; %Slice 30 of an MRI image.
image(anat.img(:,:,i),'CDataMapping','scaled');colormap gray;
%freezeColors;
hold on;
image(im(:,:,i),'CDataMapping','scaled','AlphaData',mask(:,:,i));colormap(autumn);
Transparency works fine without the use of freezeColors.

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回答（2 个）

Zhangyan Yang
Zhangyan Yang 2020-12-12
you can use spm which is matlab-compatible
Image Analyst
Image Analyst 2020-12-12

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