#Equalizehist

Histogram equalization is an image processing method that uses a histogram of the image intensity distribution for contrast adjustment.

#Operator Effect

Input Image	Parameter	Output Image
	-

#Principle

To achieve the equalization effect, the image needs to be remapped and its cumulative distribution function is calculated as follows:

$H'(i)=\displaystyle\sum_{0\leqslant j<i}H(j)$

After obtaining the cumulative distribution it needs to be normalized to obtain the functional form as follows:

Finally the equalized image is obtained using the remapping function, which is as follows:

$dst(x,y)=H'(src(x,y))$

#API Interface

For detailed interface information, please refer to hbVPEqualizeHist.

#Usage