Matlab practice

Write a custom MATLAB function named pixelcounter that counts the number of pixels in a user$-$

specified image that have an intensity exceeding a user$-$specified threshold value in a user$-$specified

colour channel. The pixelcounter function has the following three inputs:

img: the image on which the user wishes to apply the pixelcounter function

clr: the colour channel the user is interested in; specified as $1$ for red, $2$ for green, or $3$ for blue

lim: the threshold intensity value in the specified colour channel

And the following three outputs:

num: the number of pixels exceeding the value specified by lim in the colour channel specified

by $clr$

perc: the percentage of pixels exceeding the value specified by lim in the colour channel

specified by $clr($calculated out of the total number of pixels in img$)$

avg: the average intensity value for all pixels in the colour channel specified by clr

Note:

You may assume that the user will always supply inputs that are valid $($there is no need to

account for any invalid inputs e$.$g$.$ clr being set to $4).$

The Learner Template has hints on how to approach writing this function. You may choose to use

these or pursue coding the function however you like, but your solution should feature the use of

if$-$else statements and for loops.

Use the sample images to test the function $($given in the transcript$)$ : 'BrightonBeach.jpeg', ;Barbie.jpeg', 'Cats.jpeg' and 'Dune.jpeg'

Use semicolon $($;$)$ to suppress code output

Do not use any clear or clc commands in the script.