title: equalize/normalize Hue Saturation Brightness in color images with OpenCV
body: <p>i want to equalize two half face color images of the same subject and then merge them. Each of them has different values of hue saturation and brightness....using opencv how can i normalize/equalize each half image?</p>
  
  <p>I tried performing cvEqualizeHist(v, v); on the v value of the converted HSV image, but two images still have significant difference and after the merge still has a line between the colors of the two halves...thanks</p>