Grayscale images have one channel but color images have more than one channel. For color images, we can

use RGB color model.

Shortly explain the RGB color models.

The RGB colour model is a way of representing colours in terms of the intensities of red$($R$),$ green $(G),$ and

blue$($B$)$ light. It is an additive colour model, meaing that colours are created by adding different intensities

of these primary colours of light.

In the RGB model, each colour is represented by a tuple of three values ranging from $0$ to $255,$ indicating

the intensity of each of the primary colours. For example, Pure red is represented as $(255,0,0)$ indicating

full intensity of red and no green or blue. By varying the intensities of red, green, and blue a wide range

of colours can be produced.