1. A method for aiding a user in selecting images based on photographic style, comprising: with a trained classifier of a computing device that has been trained on images annotated according to a set of photographic style categories, assigning a style value for each of the set of photographic style categories to each of a set of database images; receiving a user's selection of a subset of the photographic style categories, the subset including at least two photographic style categories; generating a user interface for the user to assign values from a range of values to each of the selected photographic style categories in the subset; and identify a subset of images in the database by computing a comparison between the user's assigned values for each of the selected photographic style categories and the style values for each of the selected photographic style categories of the database images.