DE69226314D1 - Flächenklassifizierungsverfahren für ein Bild - Google Patents

Flächenklassifizierungsverfahren für ein Bild

Info

Publication number
DE69226314D1
DE69226314D1 DE69226314T DE69226314T DE69226314D1 DE 69226314 D1 DE69226314 D1 DE 69226314D1 DE 69226314 T DE69226314 T DE 69226314T DE 69226314 T DE69226314 T DE 69226314T DE 69226314 D1 DE69226314 D1 DE 69226314D1
Authority
DE
Germany
Prior art keywords
image
classification method
area classification
area
classification
Prior art date
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.)
Expired - Lifetime
Application number
DE69226314T
Other languages
English (en)
Inventor
Seido Kawanaka
Shiro Ida
Hideo Takemura
Kouji Kumetani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yozan Inc
Sharp Corp
Original Assignee
Yozan Inc
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP22835191A external-priority patent/JP3157861B2/ja
Priority claimed from JP22835091A external-priority patent/JP3157860B2/ja
Priority claimed from JP22833591A external-priority patent/JP3220481B2/ja
Application filed by Yozan Inc, Sharp Corp filed Critical Yozan Inc
Application granted granted Critical
Publication of DE69226314D1 publication Critical patent/DE69226314D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Analysis (AREA)
  • Character Input (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE69226314T 1991-08-13 1992-08-12 Flächenklassifizierungsverfahren für ein Bild Expired - Lifetime DE69226314D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP22835191A JP3157861B2 (ja) 1991-08-13 1991-08-13 領域分割方法
JP22835091A JP3157860B2 (ja) 1991-08-13 1991-08-13 原稿の図形領域抽出方法
JP22833591A JP3220481B2 (ja) 1991-08-13 1991-08-13 原稿の空白領域抽出方法

Publications (1)

Publication Number Publication Date
DE69226314D1 true DE69226314D1 (de) 1998-08-27

Family

ID=27331384

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226314T Expired - Lifetime DE69226314D1 (de) 1991-08-13 1992-08-12 Flächenklassifizierungsverfahren für ein Bild

Country Status (3)

Country Link
US (1) US5381241A (de)
EP (1) EP0527488B1 (de)
DE (1) DE69226314D1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381241A (en) * 1991-08-13 1995-01-10 Sharp Corporation Method for discriminating between figure and text areas of an image
JP3437226B2 (ja) * 1993-10-20 2003-08-18 キヤノン株式会社 画像処理方法及び装置
US5659402A (en) * 1994-01-14 1997-08-19 Mita Industrial Co., Ltd. Image processing method and apparatus
US6268935B1 (en) * 1994-04-15 2001-07-31 Minolta Co., Ltd. Image processor
JP3207690B2 (ja) * 1994-10-27 2001-09-10 シャープ株式会社 画像処理装置
US5946453A (en) * 1995-04-27 1999-08-31 Agfa Corporation Clustered dot and line multilevel halftoning for electrographic color printing
US5883973A (en) * 1996-02-20 1999-03-16 Seiko Epson Corporation Method and apparatus for processing a document by segmentation into text and image areas
US5778104A (en) * 1996-06-19 1998-07-07 Northrop Grumman Corporation Adaptive luminance-based filter
US6160913A (en) * 1998-03-25 2000-12-12 Eastman Kodak Company Method and apparatus for digital halftone dots detection and removal in business documents
US6185335B1 (en) * 1998-07-07 2001-02-06 Electronics For Imaging, Inc. Method and apparatus for image classification and halftone detection
US6227725B1 (en) * 1998-08-18 2001-05-08 Seiko Epson Corporation Text enhancement for color and gray-scale documents
JP3983101B2 (ja) * 2001-05-25 2007-09-26 株式会社リコー 画像処理装置、画像読み取り装置、画像形成装置およびカラー複写装置
CN100405392C (zh) * 2004-03-31 2008-07-23 光宝科技股份有限公司 以压缩影像为基础增强打印品质的图文分离方法
CN100367762C (zh) * 2004-05-19 2008-02-06 光宝科技股份有限公司 加强半色调影像打印品质的方法
US7362474B2 (en) * 2004-06-07 2008-04-22 Lite-On Technology Corp. Printing quality enhancement via graphic/text detection method in compression (JPEG) image
KR101581427B1 (ko) * 2009-06-30 2015-12-31 삼성디스플레이 주식회사 표시 장치 및 그 구동 방법
CN103577816A (zh) * 2012-07-24 2014-02-12 夏普株式会社 图像处理装置和图像处理方法
US9165406B1 (en) 2012-09-21 2015-10-20 A9.Com, Inc. Providing overlays based on text in a live camera view

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2103449B (en) * 1981-06-29 1985-05-30 Nippon Telegraph & Telephone Method and apparatus for gray level signal processing
US4400738A (en) * 1981-10-30 1983-08-23 Xerox Corporation Image signal processing method and apparatus
US4630125A (en) * 1983-06-01 1986-12-16 Xerox Corporation Unscreening of stored digital halftone images
JPS59223073A (ja) * 1983-06-01 1984-12-14 Canon Inc 画像処理装置
US5267330A (en) * 1984-06-19 1993-11-30 Canon Kabushiki Kaisha Image processing apparatus
JPS6198069A (ja) * 1984-10-19 1986-05-16 Canon Inc 画像処理装置
US4639775A (en) * 1985-05-17 1987-01-27 Rca Corporation Method for detecting blemishes near the perimeter of a CCD image
US4742557A (en) * 1985-11-08 1988-05-03 Ncr Corporation Adaptive character extraction method and system
JPH0623999B2 (ja) * 1986-07-28 1994-03-30 株式会社日立製作所 パタ−ン欠陥検出方法
US4823194A (en) * 1986-08-01 1989-04-18 Hitachi, Ltd. Method for processing gray scale images and an apparatus thereof
JPS63113776A (ja) * 1986-10-31 1988-05-18 Seiko Instr & Electronics Ltd 画像の最大値，最小値変換回路
JP2696211B2 (ja) * 1987-04-20 1998-01-14 株式会社日立製作所 濃淡画像からのパターン認識方法及び装置
US5253082A (en) * 1988-03-10 1993-10-12 Canon Kabushiki Kaisha Image forming apparatus
JPH02161571A (ja) * 1988-06-09 1990-06-21 Ezel Inc 画像処理方法
US4941190A (en) * 1988-07-15 1990-07-10 Minnesota Mining And Manufacturing Company Method and system for enhancement of a digitized image
JPH02100575A (ja) * 1988-10-07 1990-04-12 Toshiba Corp 画像処理装置
US5153925A (en) * 1989-04-27 1992-10-06 Canon Kabushiki Kaisha Image processing apparatus
US5189710A (en) * 1990-09-17 1993-02-23 Teknekron Communications Systems, Inc. Method and an apparatus for generating a video binary signal for a video image having a matrix of pixels
JPH04271662A (ja) * 1991-02-27 1992-09-28 Nec Corp 画像領域判定装置
US5081692A (en) * 1991-04-04 1992-01-14 Eastman Kodak Company Unsharp masking using center weighted local variance for image sharpening and noise suppression
US5381241A (en) * 1991-08-13 1995-01-10 Sharp Corporation Method for discriminating between figure and text areas of an image

Also Published As

Publication number Publication date
EP0527488B1 (de) 1998-07-22
US5381241A (en) 1995-01-10
EP0527488A2 (de) 1993-02-17
EP0527488A3 (de) 1993-04-21

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Legal Events

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8332 No legal effect for de