JP4220060B2 - 連続階調画像ハーフトーン化プロセス - Google Patents

連続階調画像ハーフトーン化プロセス Download PDF

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Publication number
JP4220060B2
JP4220060B2 JP07905099A JP7905099A JP4220060B2 JP 4220060 B2 JP4220060 B2 JP 4220060B2 JP 07905099 A JP07905099 A JP 07905099A JP 7905099 A JP7905099 A JP 7905099A JP 4220060 B2 JP4220060 B2 JP 4220060B2
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Japan
Prior art keywords
image
continuous
halftone
pixel
activity index
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JP07905099A
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English (en)
Japanese (ja)
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JPH11331562A5 (enExample
JPH11331562A (ja
Inventor
クイアン・リン
ブレント・エム・ブラドバーン
ブライアン・イー・ホフマン
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HP Inc
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Hewlett Packard Co
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Publication of JPH11331562A publication Critical patent/JPH11331562A/ja
Publication of JPH11331562A5 publication Critical patent/JPH11331562A5/ja
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    • 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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/403—Edge-driven scaling; Edge-based scaling

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Editing Of Facsimile Originals (AREA)
JP07905099A 1998-03-24 1999-03-24 連続階調画像ハーフトーン化プロセス Expired - Fee Related JP4220060B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US046,995 1998-03-24
US09/046,995 US6178011B1 (en) 1998-03-24 1998-03-24 Adaptive image resolution enhancement technology

Publications (3)

Publication Number Publication Date
JPH11331562A JPH11331562A (ja) 1999-11-30
JPH11331562A5 JPH11331562A5 (enExample) 2006-05-18
JP4220060B2 true JP4220060B2 (ja) 2009-02-04

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ID=21946482

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JP07905099A Expired - Fee Related JP4220060B2 (ja) 1998-03-24 1999-03-24 連続階調画像ハーフトーン化プロセス

Country Status (4)

Country Link
US (1) US6178011B1 (enExample)
EP (1) EP0946049B1 (enExample)
JP (1) JP4220060B2 (enExample)
DE (1) DE69901858T2 (enExample)

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KR100462631B1 (ko) * 2003-02-03 2004-12-23 삼성전자주식회사 웨이브릿 변환을 이용한 하프토닝 방법 및 장치
US7280246B2 (en) * 2003-02-12 2007-10-09 Marvell International Technology Ltd. Laser print apparatus that generates pulse width value and justification value based on pixels in a multi-bit image
US7570824B2 (en) * 2003-07-11 2009-08-04 Sharp Kabushiki Kaisha Image processing method, image processor, image forming apparatus and memory product
US20050030586A1 (en) * 2003-07-23 2005-02-10 Jincheng Huang Adaptive halftone scheme to preserve image smoothness and sharpness by utilizing X-label
US7245779B2 (en) * 2003-07-23 2007-07-17 Marvell International Technology Ltd. Image enhancement employing partial template matching
US7483167B2 (en) * 2003-08-27 2009-01-27 Marvell International Ltd. Image forming apparatus for identifying undesirable toner placement
KR100611981B1 (ko) 2004-05-01 2006-08-11 삼성전자주식회사 이미지의 하프토닝 방법 및 장치
US7733532B2 (en) 2004-10-27 2010-06-08 Marvell International Technology Ltd. Laser print apparatus with dual halftones
US7697169B2 (en) 2004-10-29 2010-04-13 Marvell International Technology Ltd. Laser print apparatus with toner explosion compensation
JP4457938B2 (ja) * 2005-03-29 2010-04-28 富士ゼロックス株式会社 画像処理装置及び画像処理方法
JP4609255B2 (ja) * 2005-09-14 2011-01-12 富士ゼロックス株式会社 画像形成装置およびその画像処理方法
RU2335094C2 (ru) * 2005-10-31 2008-09-27 Общество с ограниченной ответственностью "Новейшие допечатные технологии" (ООО "Новейшие допечатные технологии") Способ адаптивного растрирования полутоновых оригиналов
JP2007166287A (ja) * 2005-12-14 2007-06-28 Fuji Xerox Co Ltd 画像処理装置、および画像処理方法
US20070269123A1 (en) * 2006-05-16 2007-11-22 Randall Don Briggs Method and apparatus for performing image enhancement in an image processing pipeline
US20080181092A1 (en) * 2007-01-26 2008-07-31 Mcclellan Paul J Halftoning curved images
JP2008219472A (ja) * 2007-03-05 2008-09-18 Kyocera Mita Corp 画像形成装置
US8971658B2 (en) * 2007-04-23 2015-03-03 Xerox Corporation Edge contrast adjustment filter
US8059311B2 (en) * 2008-01-31 2011-11-15 Sharp Laboratories Of America, Inc. Font and line art rendering for multi-bit output devices
US7911646B2 (en) 2008-01-31 2011-03-22 Sharp Laboratories Of America, Inc. Multilevel halftoning for tint graphic, line art and text rendering
JP5353413B2 (ja) * 2008-04-25 2013-11-27 コニカミノルタ株式会社 画像記録方法および画像記録装置
US20100027074A1 (en) * 2008-07-31 2010-02-04 Sharp Laboratories Of America, Inc. Partition halftone for multi-tone level output device
US20110106808A1 (en) * 2009-10-30 2011-05-05 Salesforce.Com, Inc. Multi-dimensional content organization and delivery
JP2012114510A (ja) * 2010-11-19 2012-06-14 Kyocera Mita Corp 画像形成装置および画像形成方法
JP5055418B2 (ja) * 2010-12-10 2012-10-24 キヤノン株式会社 画像処理装置および画像処理方法
US8848249B2 (en) 2011-07-29 2014-09-30 Hewlett-Packard Development Company, L.P. Creating an image to be printed using halftone blending
CN105103529A (zh) 2013-01-29 2015-11-25 惠普发展公司，有限责任合伙企业 打印机和处理要打印的图像的方法
US9600858B1 (en) * 2013-10-17 2017-03-21 Pixelworks, Inc. Visually comfortable content-adaptive dithering for super-resolution
KR102057197B1 (ko) 2015-02-17 2019-12-18 삼성전자주식회사 하이브리드 해프토닝 개선 방법 및 이를 위한 장치
CN107250972B (zh) * 2015-04-24 2020-07-03 惠普发展公司，有限责任合伙企业 确定用于3d打印的半色调机制
JP6973098B2 (ja) * 2018-01-16 2021-11-24 セイコーエプソン株式会社 画像処理装置、画像処理装置の制御方法、及び印刷装置

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US5031034A (en) 1988-06-20 1991-07-09 Canon Kabushiki Kaisha Image forming and processing apparatus with identification of character portions of images
JPH04219073A (ja) 1990-10-11 1992-08-10 Ricoh Co Ltd 画像記録装置
JP3276985B2 (ja) * 1991-06-27 2002-04-22 ゼロックス・コーポレーション イメージピクセル処理方法
US5341226A (en) * 1993-04-22 1994-08-23 Xerox Corporation Automatic image segmentation for color documents
US5327262A (en) * 1993-05-24 1994-07-05 Xerox Corporation Automatic image segmentation with smoothing
JPH07264402A (ja) 1994-03-18 1995-10-13 Dainippon Screen Mfg Co Ltd 印刷版画像の作成方法
US5550569A (en) * 1994-04-12 1996-08-27 Xerox Corporation Image processing for ink-jet printing with fast-and slow-drying inks
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US5838462A (en) * 1996-04-01 1998-11-17 Xerox Corporation Hybrid imaging system
US5701366A (en) 1996-09-04 1997-12-23 Canon Information Systems, Inc. Halftoning with gradient-based selection of dither matrices

Also Published As

Publication number Publication date
DE69901858T2 (de) 2003-03-27
EP0946049B1 (en) 2002-06-19
US6178011B1 (en) 2001-01-23
JPH11331562A (ja) 1999-11-30
DE69901858D1 (de) 2002-07-25
EP0946049A1 (en) 1999-09-29

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