6. The system of claim 1 wherein the matching unit comprises: an acquisition unit having a plurality of recognition units, each recognition unit coupled to a corresponding index table, the recognition units performing recognition on the image query and retrieving the recognition results from the index tables; and a dispatcher that receives image queries and recognition parameters, sending them to specific recognition units of the acquisition unit.
6. The system of claim 1 wherein the matching unit comprises: an acquisition unit having a plurality of recognition units, each recognition unit coupled to a corresponding index table, the recognition units performing recognition on the image query and retrieving the recognition results from the index tables; and a dispatcher that receives image queries and recognition parameters, sending them to specific recognition units of the acquisition unit. 8. The system of claim 6 wherein a plurality of recognition units and corresponding index tables include: a first recognition unit and index table for a first group of images and a second recognition unit and index table for a second group of images, wherein the first group of images is different than the second group of images.