File $4$: $[$

histogram.py$]$

Visualize the ascent image's color distribution using a histogram. In the textbook,you learned to use histogram to

show data distribution. For this task, please follow the steps below:

Step $1$: Convert the $2$D image array to a $1$D array and assign it to a new variable, $($use the $.$flatten$()$ method of

NumPy array, see textbook for details$).$

The shape of the resulting array should be:

$>>fla{t}_{i}mg.$shape

cdots,$(262144,)$

It is a $1$ D array with $262,144(512*512)$ elements.

Step $2$: Send the $1$D array to the plt$.$hist$()$ method to display the histogram of color distribution. In the method

call, set the number of bins to $256.$ The resulting histogram will be like this: