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:
Jan. 31, 2012
Filed:
Apr. 26, 2007
Masakazu Ohira, Nara, JP;
Atsuhisa Morimoto, Nara, JP;
Masakazu Ohira, Nara, JP;
Atsuhisa Morimoto, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Pixels of a binary image obtained by binarizing an image are scanned in a predetermined direction, labels are assigned to the pixels according to binarization information about the respective pixels, information about the assigned labels is stored sequentially for each of a plurality of lines along the predetermined direction, information about coordinate values in the binary image of pixels assigned the same label is stored, a determination is made as to whether or not, in a current line among the plurality of lines, there is a pixel assigned the same label as a label assigned to a pixel contained in a line which was scanned immediately before the current line, when a determination is made that there is no pixel assigned the same label, a feature point in a connected component formed by connecting together pixels specified by the coordinate values is calculated based on the stored information about the coordinate values, a feature vector representing a feature of the image is calculated based on the calculated feature point, and a similarity to reference image is determined based on the calculated feature vector.