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1.发明专利
公开(公告)号：JP5554931B2
公开(公告)日：2014-07-23
申请号：JP2009039833
申请日：2009-02-23
Applicant: キヤノン株式会社
Inventor： 努 坂上
CPC classification number: H04N9/3179 , H04N2201/3242 , H04N2201/3278
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公开(公告)号：JP4659789B2
公开(公告)日：2011-03-30
申请号：JP2007165314
申请日：2007-06-22
Applicant: キヤノン株式会社
Inventor： 努 坂上
Abstract: PROBLEM TO BE SOLVED: To improve the definition of a character by suppressing framing that occurs in a peripheral part of the character. SOLUTION: An original image is scanned for respective pixels to determine attributes indicating features for respective pixels of the scanned document. Pixel values included in an M×N (each of M and N is a natural number) including a pixel of interest are weighted, the pixel value of the pixel of interest is changed based on the weighted pixel values, and filtering is applied to pixel included in that area. Upon applying the filtering, a size of a filtering area is reduced according to the determined attributes. COPYRIGHT: (C)2008,JPO&INPIT
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4.发明专利
公开(公告)号：JP4717396B2
公开(公告)日：2011-07-06
申请号：JP2004250557
申请日：2004-08-30
Applicant: キヤノン株式会社
CPC classification number: H04N1/44 , H04N1/00342 , H04N2201/0094
Abstract: A data communication apparatus which is capable of preventing reception of undesired data by a destination without increasing the load on a network, etc. Data and a destination thereof are input. A sender ID related to a sender who sends the input data is input. The input data is sent to the input destination. A sender ID for data transmission to the input destination is permitted is stored as a permission ID. The input sender ID is collated with the stored permission ID. Whether to permit data transmission is determined according to the collation result.
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5.发明专利
公开(公告)号：JP4412733B2
公开(公告)日：2010-02-10
申请号：JP2005224595
申请日：2005-08-02
Applicant: キヤノン株式会社
CPC classification number: H04N1/54 , H04N1/233 , H04N1/2369 , H04N1/52
Abstract: When color materials of more than four colors are used, a signal for the amount of toner used within a range appropriate for the apparatus and toner characteristic is generated using a color separation table. However, a printer receives print data of various formats, such as image data separated into signal values of more than four colors, or image data of a special format to which a six-color separation table cannot be applied. Hence, an image signal representing a combination of colors is input. The sum of the signal values of colors in each pixel of the image signal is calculated and compared with a limit value. When the sum exceeds the limit value, the signal values of base colors are replaced with that of a spot color based on a replacement table for replacing the signal values of the base colors with that of the spot color.
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Patent Agency Ranking6.发明专利
公开(公告)号：JP4115460B2
公开(公告)日：2008-07-09
申请号：JP2005114771
申请日：2005-04-12
Applicant: キヤノン株式会社
Inventor： 努 坂上
IPC: H04N1/407
CPC classification number: H04N1/4072 , G06T7/12 , G06T7/194 , G06T2207/30012
Abstract: An image processing apparatus extracts DC components of an image, generates a histogram of the extracted DC components, and detects a background level of the image based on the histogram.
Abstract translation: 图像处理装置提取图像的DC分量，生成提取的直流分量的直方图，并且基于直方图检测图像的背景水平。
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公开(公告)号：JP5165137B2
公开(公告)日：2013-03-21
申请号：JP2012159063
申请日：2012-07-17
Applicant: キヤノン株式会社
Inventor： 努 坂上
Abstract: PROBLEM TO BE SOLVED: To find out a character even when the character exists in a halftone dot.SOLUTION: After an adaptive smoothing section 2401 smooths an image signal, an edge enhancement section 2402 performs edge enhancement to the image signal. A threshold determination section 2403 determines a threshold to the signal after the edge enhancement and determines either a character or a halftone dot.
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公开(公告)号：JP4380602B2
公开(公告)日：2009-12-09
申请号：JP2005217394
申请日：2005-07-27
Applicant: キヤノン株式会社
IPC: G03G21/02 , B41J29/00 , B41J29/42 , G03G21/00 , G06T1/00 , G06T11/60 , H04N1/387 , H04N1/46 , H04N1/60
CPC classification number: H04N1/54
Abstract: There is known a technique of inputting the contents of image data and the use purpose of a print material and automatically selecting a combination of color materials appropriate for them. However, it cannot be confirmed before printing whether improvement of image quality commensurate with the cost and labor to input contents information can be obtained. To solve this problem, the ratio of the amount of the color material of a spot color used to that of the color materials of process colors used in input image data is calculated. The recommendation grade of printing using the spot color is determined on the basis of the ratio. Further, display of the recommendation grade is controlled.
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公开(公告)号：JP4810413B2
公开(公告)日：2011-11-09
申请号：JP2006328847
申请日：2006-12-05
Applicant: キヤノン株式会社
Inventor： 努 坂上
IPC: H04N1/387
CPC classification number: G07D7/20 , G06K9/00577 , G06K9/2063 , G06K9/6203 , G06K2209/01
Abstract: Paper fingerprint information that represents a fiber pattern unique to a paper sheet is scanned, and the paper fingerprint information and its position information are embedded at two corners as the cater-cornered positions on a paper sheet. The paper fingerprint information is extracted based on the embedded position information.
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