title: Gamma Correction on an Image in android
body: <p>I am building an android app which provides the user with some image processing functionalities. But before applying any image transformation function I would like to do gamma correction to improve the image. I know how to perform the gamma correction but I don't know what gamma value to use as the image itself doesn't have the gamma value with which the image was created. Any information regarding how to select a gamma value for a particular image will be very helpful.</p>