histogram_equalization

Equalizes the contrast of an image using a histogram
Spreads out the contrast
Lighter areas become darker and darker areas become lighter
Makes it easier to identify features in an image
A cummulative distribution function is used to find the new gray value of a pixel
Usage: python histogram_equalization.py -i <inputf> [-o <outputf> -t <transferf> -a <histinf> -b <histoutf>]
-o specifies output image path, -t specifies transfer function plot path, -a specifies input histogram path, -b specifies output histogram path

Input Image

Output Image (after histogram equalization)

Transfer Function

Input Histogram

Output Histogram

kalyousefi/histogram_equalization