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. 22, 2019
Filed:
Nov. 23, 2016
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Toshihiro Watanabe, Kuwana, JP;
Hiroyuki Nakazawa, Kasugai, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-shi, Aichi-Ken, JP;
Abstract
An image reading system includes a reading device, a first calibration unit, and a detection unit. The reading device is configured to read a white reference member to acquire white image data and configured to read an original document to acquire document image data. The first calibration unit is configured to calibrate shading of the document image data to generate first image data by performing converting a density value in the document image data to a gradation value that is proportional to the density value and falls within a predetermined range having a minimum gradation value, a maximum gradation value, and a target value less than the maximum gradation value. The density value equal to the corresponding density value is converted to the target value in the conversion. The detection unit is configured to detect pixels in the image data corresponding to an edge of the original document.