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:
Sep. 25, 1990
Filed:
Nov. 25, 1987
Applicant:
Inventor:
Yasuo Hongo, Kanagawa, JP;
Assignee:
Fuji Electric Co., Ltd., Kanagawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382 51 ; 382 50 ;
Abstract
A method for determining a binary coding threshold value for a target object comprises determining reference binarization characteristic values for each reference object, storing the reference values in a memory, selecting the reference value associated with a reference object corresponding to the target object, generating in a learning procedure a histogram corresponding to the selected reference value, extracting feature data, i.e., binarization characteristic values, in a threshold control step from the histogram, and setting the binary coding threshold value to a predetermined weight mean value calculated from the binarization characteristics. 7257