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:
May. 15, 2012
Filed:
Sep. 12, 2008
Naotake Natori, Kunitachi, JP;
Naotake Natori, Kunitachi, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
In a stain determination apparatus or sheet processing apparatus, an input processing unit inputs image information containing an inherent variation that is not related to a stain, a feature extracting unit extracts a plurality of feature information items from the image information input by the input processing unit, a separating unit separates a set of the plurality of feature information items extracted by the feature extracting unit into a inherent variation component and another residual component, a determining unit extracts a main component of stain variation indicating a stain degree in the image information input by the input processing unit from the residual component separated by the separating unit and determines a stain degree in the image information based on the magnitude of the extracted stain variation main component.