Write a computer program to threshold a grayscale image to obtain a bi-level image. Write your
own code for the steps of the algorithm; don't use existing thæsholding-JVlated functions. Use
Kittler and Illingworth's Kullback information minimization approach. You do not have to apply
the correction terms for tail truncation. Here's a possible command-line user interface:
USAGE
thresh I-t T] infile outfile
T: user-specified threshold; € T 255;
default: T is automatically computed using Kittler's method
infile: the input grayscale image
outfile: the output bi-level image
DESCRIPTION
If a fixed threshold is not specified, then it is automatically
computed by minimizing the Kullback information measure .
Specifically, the image is thresholded as follows:
= 255 if X[n] T
= if x [n] < T
