The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 1978
Filed:
Jul. 23, 1976
Applicant:
Inventors:
David P Casasent, Pittsburgh, PA (US);
Demetri Psaltis, Thessaloniki, GR;
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06G / ; G06G / ;
U.S. Cl.
CPC ...
364822 ; 315364 ; 3401 / ; 350-382 ; 3501 / ; 364515 ; 364826 ;
Abstract
Correlation methods and apparatus are disclosed which make use of Mellin transforms that are scale and shift invariant. There is no loss in the signal-to-noise ratio of the correlation, and data is available for determining any scale difference between the input and reference data.