When we look at images, our brain picks up on a number of subtle clues to infer important details about the scene, such as faint color tints that are due to lighting. Warmer colors tend to be perceived as more pleasant, whereas cool colors are associated with night and drabness. This effect is no mystery to photographers, who sometimes purposely manipulate the white balance of an image to convey a certain mood. How can we achieve such an effect using OpenCV?
