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. 25, 2017
Filed:
Jan. 29, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Kouta Murasawa, Yokohama, JP;
Akitoshi Yamada, Yokohama, JP;
Nobutaka Miyake, Yokohama, JP;
Tomokazu Ishikawa, Yokohama, JP;
Shinjiro Hori, Yokohama, JP;
Fumitaka Goto, Tokyo, JP;
Ryosuke Iguchi, Kawasaki, JP;
Hidetsugu Kagawa, Kawasaki, JP;
Hiromitsu Akiba, Yokohama, JP;
Senichi Saito, Funabashi, JP;
Junichi Nakagawa, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In low-resolution processing (reduction processing) in which input image data is separated into character print data and image print data to generate print data of lower resolution than that of the input image data, if a plurality of pixels is simply reduction-processed to one pixel, color of a color image surrounding a character may change. In an image processing method, calculation for performing reduction processing so that the plurality of pixels in the input image data corresponds to one pixel in the print data is performed as follows. A ratio of using a pixel value of a character attribute pixel in the calculation is set to 0, or set smaller than a ratio of using a pixel value of an image attribute pixel. As a result, a change in the color of the color image surrounding the character can be prevented.