Invention Grant
US08817329B2 Color measuring device, image forming apparatus, color measuring method, and color measuring system
有权
色彩测量装置，成像装置，色彩测量方法和色彩测量系统
- Patent Title: Color measuring device, image forming apparatus, color measuring method, and color measuring system
- Patent Title (中): 色彩测量装置，成像装置，色彩测量方法和色彩测量系统
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Application No.: US13768629Application Date: 2013-02-15
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Publication No.: US08817329B2Publication Date: 2014-08-26
- Inventor: Nobuyuki Satoh , Yasuyuki Suzuki , Masato Kobayashi , Yuichi Sakurada , Suguru Yokozawa , Mamoru Yorimoto , Tatsuhiko Okada , Daisaku Horikawa , Ryo Honda
- Applicant: Nobuyuki Satoh , Yasuyuki Suzuki , Masato Kobayashi , Yuichi Sakurada , Suguru Yokozawa , Mamoru Yorimoto , Tatsuhiko Okada , Daisaku Horikawa , Ryo Honda
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-031036 20120215; JP2013-010343 20130123
- Main IPC: H04N1/60
- IPC: H04N1/60 ; H04N1/46 ; G03F3/08 ; G06K15/00 ; G06K9/00
Abstract:
A color measuring device includes a unit configured to calculate a reference-value matrix for converting imaged reference RGB value of a reference color patch a reference colorimetric value of the reference color patch; a unit configured to convert a color-measurement RGB value of a color measurement object into an imaged colorimetric value of the color measurement object by using the corresponding reference-value matrix; a unit configured to select reference color patches of which the reference colorimetric values each have a close distance from the imaged colorimetric value in the predetermined color space; a unit configured to select, as selection RGB values, the imaged reference RGB values of the selected patches; a unit configured to calculate a selection-RGB-value matrix for converting the selection RGB values into the reference colorimetric values; and a unit configured to convert the color-measurement RGB value into a colorimetric value by using the selection-RGB-value matrix.
Public/Granted literature
- US20130208289A1 COLOR MEASURING DEVICE, IMAGE FORMING APPARATUS, COLOR MEASURING METHOD, AND COLOR MEASURING SYSTEM Public/Granted day:2013-08-15
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