Convert 3 greyscale images representing RGB to RGB image

I have used the imread() function to read in three greyscale images , each image represents the same image but one where the illumination was red light then green light and finally blue. I would like to convert these 3 greyscale images that represent the 3 RGB channels into an RGB image but Im unsure how to do so and cannot find any documentation on this exact case. Any help would be much appreciated.

Answer 1

[Rik]

Using the standard conventions:

RGB=cat(3,red(:,:,1),green(:,:,1),blue(:,:,1));

The indexing is in there in case your input images are stored as RGB.

[Claretconnor]

Thanks Rik!!! This has worked perfectly and really helped me out! I was doing: RGB=cat(3,red,green,blue) then trying to use imshow() which obviously wasnt working.

thanks again!

[Image Analyst]

@Claretconnor it would have worked had red, green, and blue really been grayscale images like you said, but evidently they were not gray scale, they were actually RGB images.

[Claretconnor]

the images were taken using a monochrome camera.

[Rik]

Then that monochrome camera stores the images as RGB. Not uncommon, but technically not correct.

[Claretconnor]

oh right I just assumed that they would be stored as grayscale images, my apologies.