1. An image-based information retrieval system, comprising: a database configured to store images in association with object representations and text identifiers, the object representations of the images comprising feature vectors, wherein the feature vectors for at least one image are parameterized according to a corresponding illumination condition of the at least one image; and a recognition server system configured to receive an image, and further configured to match the received image using the feature vectors of an object representation in the database, and further configured to forward the associated text identifier for a matching object representation to a media server.