Question $1(60$ points$)$

A digital RGB color image with a resolution of r rows and c columns can be represented by a $3$D

array, with dimensions of $[$r$,$ c$,3].$ Each coordinate given by $[$x$,$ y$]$ is called a pixel, whose color

is defined by three values, representing intensities of red, green, and blue colors at the location.

Usually the color values are represented by $8-$bit unsigned integer in the range of $[0,255],$ where

$0$ is the darkest, and $255$ is the brightest. Therefore a RGB tuple of $(0,0,0)$ represents the darkest

black color, $(255,0,0)$ the brightest red, $(0,255,0)$ the brightest green, $(0,0,255)$ the brightest

blue, and $(255,255,255)$ the brightest white.

In this question, you need to create a Matlab script file to perform the following tasks:

$1.$ Use the imread$(\text{'}$ngc$6543$a$.$jpg$\text{'})$ command