Description

Image Contrast enhancement using OpenCV

Abstract

      In OpenCV, changing the contrast of an image is a very basic task to perform. By changing the image contrast, it is meant to change the value of each and every image pixel. This change can be done by either multiplying or dividing (means to multiply each pixel with value < 1) the pixel values of the image, by any constant.To increase the contrast levels of the image, simply multiply a constant positive value to each and every image pixel.