Application of Circular Tolerance Regions to Tressi Feature Vectors. Open PDF Document Details Document Type Technical Report Publication Date Jul 04, 1967 Accession Number ADA072110 Entities People E. A. Patrick Leon Shen Organizations Purdue University Tags Communities of Interest C4I Human Systems DTIC Thesaurus Topics Computers Construction Contracts Electrical Engineering Engineering Learning Mathematics Probability Probability Density Functions Recognition Schools Ships Submarines Training Two Dimensional