How to convert uint8 to rgb image in MATLAB r2018b?

I have a 365x466x3 uint8 matrix and I need to convert it into RGB model. when I used the command "ind2rgb" i am getting the following problem, "Unable to perform assignment because the size of the left side is 365-by-466 and the size of the right side is 365-by-466-by-3." Any solution?? Thanks in advance.

Answer 1

[Walter Roberson]

365 x 466 x 3 is already RGB, unless it is HSV or L*a*b* or similar.

If you had a 365 x 466 indexed image and a colormap then you could use ind2rgb() to convert it to RGB, but you would typically assign the result to an entire variable rather than to a portion of a variable. But it could be done, such as

for K = 1 : length(filenames)
    [ind, cmap] = imread( filenames{K} );
    all_images(:,:,:,K) = ind2rgb(ind, cmap);
end

[Kaniska Samanta]

Thanks @ Walter..