Description

We propose a scheme for retinex transformations which are used for image contrast enhancement. The process contains the automatic exponent selection method to improve the pixel quality of the image. It does not require the user to choose the exponent in the pixel transformation. This process works well for images having poor contrast, especially to those images in which the peaks corresponding to the background and the foreground are not widely separated. We selected an image which had a single dominant peak in the histogram and subjected it to the enhancement algorithm described above. Hence the APG algorithm based procedure pixel equalization provides the better contrast illumination correction.