# Equalize histogram

Equalizes a histogram by making the gray level distribution as uniform as possible. An image can be equalized by connecting the image and cumulativeDistribution output of this tool to map gray levels.

## Inputs

histogram
Histogram vector of size 1-by-N or N-by-1.

## Outputs

histogram
Equalized histogram. The sum of all entries equals the sum of entries of the input histogram.
cumulativeDistribution
Cumulative distribution of the histogram output.