1. An apparatus comprising: an input configured to receive image information; a detector configured to detect a potential target within the image information and determine a plurality of features forming a feature set associated with the potential target, wherein detection is based upon at least some of the determined features and/or a location of the potential target; a detection database configured to store at least location, features, fused multi-pass features and classification of potential targets; a comparator configured to compare the location of a potential target with contents of the detection database to determine if the location of the potential target is close to the location of an element in the detection database; a single-pass classifier configured to (a) receive a potential target's feature set if the potential target is not close to the location of an element in the detection database, (b) classify the potential target, and (c) transmit the location, feature set and classification of the potential target to the detection database; a fused multi-pass feature determiner configured to determine fused multi-pass features of the potential target if the potential target is close to the location of an element in the detection database; and a multi-pass classifier configured to (a) receive the potential target's feature set and fused multi-pass features if the potential target is close to the location of an element in the detection database, (b) classify the potential target, and (c) transmit the location, feature set, fused multi-pass features and classification of the potential target to the detection database.