How can i convert a 3d medical image to rgb format?

I am working database of brain tumor which is in ha format. Can anybody help me to convert these mha files into rgb format?

Answer 1

[Walter Roberson]

Read the image. mat2gray() to convert it to the range 0 to 1. im2uint8(). ind2rgb() passing in a colormap with 256 entries. The result will be an RGB image created by doing pseudocolor lookup on the grayscale image.

[Galiyabi P S]

Sir, I am working on MRI image of brain in mha format. How could I give the colour map input to the function ind2rgb(). Can you help me to convert?

[Walter Roberson]

cmap = copper(256);
recolored_image = ind2rgb(IndexedImage, cmap);

Answer 2

[Jan]

A short search in the internet (meta message :-) ) reveals this:

https://www.mathworks.com/matlabcentral/fileexchange/29344-read-medical-data-3d

See also: https://www.mathworks.com/matlabcentral/answers/122486-how-can-i-load-and-view-medical-image-mha

[Galiyabi P S]

Sir, https://www.mathworks.com/matlabcentral/fileexchange/29344-read-medical-data-3d

this link helps me to read mha file to 256*256*155 dimension image. Can you help me to convert this image to rgb format?

[Walter Roberson]

cmap = copper(256);

numslice = size(IndexedMHA,3);
colored_MHA = zeros(size(IndexedMHA, 1), size(IndexedMHA, 2), 3, numslice);
for slice = 1 : numslice
  colored_MHA(:,:,slice) = ind2rgb(IndexedMHA(:,:,slice), cmap);
end

Note: I put the color data as the third dimension. Some of the File Exchange routines work with the color data in the third dimension but some work with it in the fourth dimension.