Plot the pixel histogram( take any image) – count of values versus pixel int

Plot the pixel histogram( take any image) – count of values
versus pixel intensity 0 to 255. You must write
this from first principles – do not use the MATLAB hist
command (although you may use
it for comparison and checking your algorithm’s
correctness).
Plot the cumulative histogram. Do not use the cumsum
function in MATLAB (write your
own function to achieve this).

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