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:
Jun. 06, 1995
Filed:
Apr. 03, 1992
Patrice Y Simard, Eatontown, NJ (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
Speed and accuracy of the recognition process for an alphanumeric automated recognizer is enhanced by a novel scheme for comparing known prototype symbols to examples of unknown symbol. The scheme is invariant with respect to a selected set of small transformations of either the prototypes or the examples, requires only a few operators, and generates accuracy rates comparable to a human operator. The small transformations of interest are expressed locally by a process in which, during the data processing, the derivative of the transformed image with respect to the parameter that controls the transformation is calculated. This directional derivative then is used as the generator of interest in the recognition machine and is incorporated into the comparison process. The derivatives are generated by using tangent plane concepts, which yield a useful approximation of an otherwise not quantifiable complex surface in the neighborhood occupied by the unknown example. Computation time is decreased and recognition accuracy is increased.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile