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:
Mar. 24, 2009
Filed:
Jul. 30, 2004
Yoshihisa Ohguro, Yokohama, JP;
Yoshihisa Ohguro, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A language such as English or a language group such as an Asian language group is recognized based upon document image data. The document image data is processed to determine a minimal circumscribing rectangle for each character. The layout characteristics of the minimal circumscribing rectangles are quantified in a discrete number of ranges. The layout characteristic information includes a certain ratio with respect to the minimal circumscribing rectangle height and width as well as a black pixel density in the minimal circumscribing rectangle. Based upon the quantified layout characteristic information, an occurrence probability of a predetermined number of characters is determined using training data for a predetermined number of languages. The occurrence probability is stored in a table for later reference for an unknown input language.