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:
Jul. 12, 2011
Filed:
May. 23, 2003
Takayuki Nabeshima, Toyokawa, JP;
Takayuki Nabeshima, Toyokawa, JP;
Minolta Co., Ltd., Osaka-Shi, Osaka, JP;
Abstract
A document type discriminating apparatus is provided in which discrimination as to whether or not a document is a duplicate is made with high degree of accuracy. The document type discriminating apparatus includes means for discriminating whether a type of a screen pattern used in an image captured by reading a document is a line screen, means for detecting whether a value indicating a change in a period of the screen used in the image exceeds a predetermined value, means for detecting whether a value indicating sharpness of an edge seen in the image is lower than a predetermined value, means for detecting whether a value indicating a blur in an edge color seen in the image exceeds a predetermined value, and means for discriminating that the document is a duplicate when at least two out of the four detection results mentioned above are true.