1. An optimal high-speed multi-resolution retrieval method on a large capacity database comprising the steps of: deriving the multi-resolution structure of a query “Q”; setting an initial minimum distance “d min ” to have the infinite value. setting respective values of “i” and “l” to be “1”. deriving “d l (X i, Q)”; deriving “d L (X l, Q)”; and selecting data having a final value of “d min ” as the best match.