MATLAB Answers


Overlaying two images help needed

Asked by Amadeus
on 19 Jan 2013


I have a .nii file (call it nii) and a track fiber mapping (call it M) that I want to overlay it onto. But I could not figure out a good way to do it. Here are some specifications I need:

  • At the bottom there will always be nii.img and I will put M (my tracking map) on.
  • I want to give M a colour, say it red
  • I guess I need to set a alpha which will work as transparency constant. If nii.img has a greater value, I want to see it more intense, otherwise M should be more intense.

note: there are 60 slices. (both of them has the size: 96*96*60)

Could you please help me?

Best regards, Amadeus


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1 Answer

Answer by Image Analyst
on 19 Jan 2013
 Accepted Answer

Use the imshowpair() function in the Image Processing Toolbox. It's new within the past version or two.


This is exactly what I was looking for. Thank you so much! But I could not figure out a way to show the first image gray. Could you please help me?

I haven't used it yet. If it doesn't work for you then maybe you'll have to create an RGB image by averaging one or more color channels.

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