title: Use adaptive histogram equalization in OpenCV using C/C++
body: <p>I found that there is a demo for adaptive histogram equalization written in python in OpenCV, see the link <a href="http://docs.opencv.org/master/d5/daf/tutorial_py_histogram_equalization.html" rel="nofollow">Histogram Equalization</a>. But I didn't find its C/C++ interface. </p>
  
  <p>Could anyone tell me whether AHE is provided in OpenCV using C/C++? Or are there any ohter libraries that implement AHE?</p>