JP4511497B2 - 画像形成装置較正に用いるために走査パッチを処理する方法及びシステム - Google Patents
画像形成装置較正に用いるために走査パッチを処理する方法及びシステム Download PDFInfo
- Publication number
- JP4511497B2 JP4511497B2 JP2006173581A JP2006173581A JP4511497B2 JP 4511497 B2 JP4511497 B2 JP 4511497B2 JP 2006173581 A JP2006173581 A JP 2006173581A JP 2006173581 A JP2006173581 A JP 2006173581A JP 4511497 B2 JP4511497 B2 JP 4511497B2
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- Prior art keywords
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- subset
- halftone
- patch
- test patch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
- H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture
- H04N1/4078—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture using gradational references, e.g. grey-scale test pattern analysis
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Processing (AREA)
- Control Or Security For Electrophotography (AREA)
- Facsimile Image Signal Circuits (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Description
104:プロセッサ
106:メモリ
108:印刷装置
112:画像ソース
113:印刷媒体
114:測色装置
Claims (4)
- ハーフトーン周期を有する複数のハーフトーン・セルを含む少なくとも1つの試験パッチを印刷するように作動する印刷装置と、
前記試験パッチを走査して、各々のハーフトーン・セルについて所定の値を取得するように作動する走査装置と、
次の(a)から(c)のステップを時系列順に実行するプロセッサと、
を備えることを特徴とするシステム。
ここで、
(a)前記ハーフトーン・セルの、前記ハーフトーン周期の倍数になる大きさにされた平均化ウィンドウ(an average window)により定義されるサブセットの値のサブセット平均を計算するステップ、
(b)所定の範囲外のサブセット平均を廃棄するように作動するステップ、
(c)前記試験パッチに対する前記サブセット平均の全体平均を計算し、前記全体平均に基づいて較正するステップ、
である。 - 前記範囲が、すべてのサブセット平均の5番目から95番目までの百分位数である、請求項1に記載のシステム。
- 画像形成装置のための較正方法であって、
ハーフトーン周期を有する複数のハーフトーン・セルを含む試験パッチを準備するステップと、
前記試験パッチを走査して、各々のハーフトーン・セルについて所定の値を取得するステップと、
前記ハーフトーン・セルの、前記ハーフトーン周期の倍数になる大きさにされた平均化ウィンドウ(an averaging window)により定義されるサブセットの値のサブセット平均を計算するステップと、
所定の範囲外のサブセット平均を廃棄するステップと、
前記試験パッチに対する前記サブセット平均の全体平均を計算するステップと、
前記全体平均に基づいて画像形成装置を較正するステップと、
を時系列順に実行することを特徴とする方法。 - 前記範囲が、すべてのサブセット平均の5番目から95番目までの百分位数である、請求項3に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/170,975 US8203768B2 (en) | 2005-06-30 | 2005-06-30 | Method and system for processing scanned patches for use in imaging device calibration |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007013957A JP2007013957A (ja) | 2007-01-18 |
JP4511497B2 true JP4511497B2 (ja) | 2010-07-28 |
Family
ID=36777089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006173581A Expired - Fee Related JP4511497B2 (ja) | 2005-06-30 | 2006-06-23 | 画像形成装置較正に用いるために走査パッチを処理する方法及びシステム |
Country Status (4)
Country | Link |
---|---|
US (1) | US8203768B2 (ja) |
EP (1) | EP1739956B1 (ja) |
JP (1) | JP4511497B2 (ja) |
DE (1) | DE602006010483D1 (ja) |
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US7760397B2 (en) * | 2007-03-12 | 2010-07-20 | Xerox Corporation | Calibration sheet and method of calibrating a digital printer |
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US8169657B2 (en) * | 2007-05-09 | 2012-05-01 | Xerox Corporation | Registration method using sensed image marks and digital realignment |
US8228559B2 (en) * | 2007-05-21 | 2012-07-24 | Xerox Corporation | System and method for characterizing color separation misregistration utilizing a broadband multi-channel scanning module |
US7590464B2 (en) * | 2007-05-29 | 2009-09-15 | Palo Alto Research Center Incorporated | System and method for on-line planning utilizing multiple planning queues |
US7925366B2 (en) * | 2007-05-29 | 2011-04-12 | Xerox Corporation | System and method for real-time system control using precomputed plans |
US7689311B2 (en) * | 2007-05-29 | 2010-03-30 | Palo Alto Research Center Incorporated | Model-based planning using query-based component executable instructions |
US8203750B2 (en) | 2007-08-01 | 2012-06-19 | Xerox Corporation | Color job reprint set-up for a printing system |
US7697166B2 (en) * | 2007-08-03 | 2010-04-13 | Xerox Corporation | Color job output matching for a printing system |
US8749861B2 (en) * | 2007-09-28 | 2014-06-10 | Xerox Corporation | L*a*b* scanning using RGB-clear |
JP5132428B2 (ja) * | 2008-05-28 | 2013-01-30 | キヤノン株式会社 | 情報処理装置、方法、及び、プログラム |
JP5146130B2 (ja) * | 2008-06-16 | 2013-02-20 | 株式会社リコー | ベルト駆動装置及びこれを備えた画像形成装置 |
US20120120428A1 (en) * | 2010-11-12 | 2012-05-17 | Henderson Thomas A | Scanning patches to provide printer calibration data |
JP5842847B2 (ja) * | 2013-03-25 | 2016-01-13 | 富士ゼロックス株式会社 | 画像処理装置、画像形成装置及びプログラム |
US9213923B2 (en) | 2013-08-19 | 2015-12-15 | Kodak Alaris Inc. | Printer calibration using limited range reflection scanners as input sources |
JP2017123588A (ja) * | 2016-01-08 | 2017-07-13 | 富士ゼロックス株式会社 | 色処理装置、画像形成装置および画像形成システム |
WO2017196301A1 (en) | 2016-05-10 | 2017-11-16 | Hewlett-Packard Development Company, L.P. | Printing using a spectrophotometer |
JP6864819B2 (ja) * | 2016-06-30 | 2021-04-28 | 富士フイルムビジネスイノベーション株式会社 | 情報処理装置及びプログラム |
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Patent Citations (4)
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Also Published As
Publication number | Publication date |
---|---|
DE602006010483D1 (de) | 2009-12-31 |
JP2007013957A (ja) | 2007-01-18 |
EP1739956A1 (en) | 2007-01-03 |
US8203768B2 (en) | 2012-06-19 |
US20070002403A1 (en) | 2007-01-04 |
EP1739956B1 (en) | 2009-11-18 |
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