This sounds too good to be true – using a huge database of photos to teach an algorithm how to make a photo look more natural.
Unlike other photo enhancement tools, which work on an image-by-image basis, Geisler’s approach—called “image processing with natural scene statistics”—is based on the analysis of thousands of images. Geisler and his team measured the statistical properties of those images and created an algorithm that determines what is or is not “noise” in any given photograph.