So you’ve extracted color histograms from a set of images… But how are you going to compare them for similarity? You’ll need a distance function to handle that. But which one? How you choose? And how do you compare histograms…

First, let’s have a quick review. Two weeks ago we explored the first step of building an image search engine: Defining Your Image Descriptor. We explored three aspects of an image that can easily be described: color, texture, and shape.…