How to fuse R,G,B Components?

I have read an RGB Image, and extracted all its components R,G,B seperately by,

R = inputImage (:,:,1);
G = inputImage (:,:,2);
B = inputImage (:,:,3);

Again I performed some operations to get the values changed. they are Re,Ge,Be.

Now again I want to display the Image integrating all these Re,Ge,Be. How?

Answer 1

[Dishant Arora]

 cat(3,Re,Be,Ge);

Answer 2

[Image Analyst]

Concatenate separate image channels into one RGB image using cat():

newRGBImage = cat(3, Re, Ge, Be);

But now, how you display it depends on what class your processed image channels were: integer or floating point. If, after processing, your new image is uint8, you can simply display it.

imshow(newRGBImage);

If, after processing, your new image channels are floating point, instead of uint8, and are in the range 0-255, you'll need to cast to uint8 before you display the new image.

imshow(uint8(newRGBImage));

If you have floating point values outside this range, you can do:

imshow(im2double(newRGBImage));