To create red-blue-green colormap for medical imaging?

Question

I run

imagesc(real(lena))
colormap(hsv)

where lena is a picture in 512x512 pixels.

I would like to get the special red-green-blue colormap like here discussed. A picture processed by it:

enter image description here

How can you get such a colors by the command colormap?

If there aren't any predefined colour maps that you like, it's pretty easy to make your own: http://stackoverflow.com/questions/17230837/how-to-create-a-custom-colormap-programatically/17232355#17232355 — Dan, Oct 21 '13 at 11:46
@Dan just tried the colormapeditor and was very happy to find such a nice tool. Thanks for the link! — Lucius II., Oct 21 '13 at 11:56

score 1 · Accepted Answer · edited Sep 12 '21 at 19:00

1

Use colormap bone to get this gray-ish blue-ish tones for your medical images.
Here's an example of this colormap taken from Mathworks:

See manual for more examples and pre-defined color maps.

edited Sep 12 '21 at 19:00

Glorfindel

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answered Oct 21 '13 at 11:33

Shai

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score 0 · Answer 2 · answered Sep 12 '21 at 20:29

Note that the paper describes a way to combine two images, it does not use a color map.

If a is the gray-scale normal MRI image, and b is the gray-scale contrast-enhanced MRI image, the paper proposes to use cat(3,a,b,a) as an RGB image, where contrast-enhancement appears as a green overlay. What that statement does is use the normal image as the red and blue channel, and the contrast-enhanced image as the green channel.

To create red-blue-green colormap for medical imaging?

2 Answers2