DE69223172D1 - Abtastlesemethode - Google Patents

Abtastlesemethode

Info

Publication number
DE69223172D1
DE69223172D1 DE69223172T DE69223172T DE69223172D1 DE 69223172 D1 DE69223172 D1 DE 69223172D1 DE 69223172 T DE69223172 T DE 69223172T DE 69223172 T DE69223172 T DE 69223172T DE 69223172 D1 DE69223172 D1 DE 69223172D1
Authority
DE
Germany
Prior art keywords
reading method
scan reading
scan
reading
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
DE69223172T
Other languages
English (en)
Other versions
DE69223172T2 (de
Inventor
Takashi Toyofuku
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.)
Fujifilm Corp
Original Assignee
Fuji Photo Film Co Ltd
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 JP3088783A external-priority patent/JP2957733B2/ja
Priority claimed from JP3143383A external-priority patent/JPH04368058A/ja
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of DE69223172D1 publication Critical patent/DE69223172D1/de
Application granted granted Critical
Publication of DE69223172T2 publication Critical patent/DE69223172T2/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
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00729—Detection means
    • H04N1/00734—Optical detectors
    • H04N1/00737—Optical detectors using the scanning elements as detectors
    • 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
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • 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
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00742—Detection methods
    • H04N1/00748—Detecting edges, e.g. of a stationary sheet
    • 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
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00742—Detection methods
    • H04N1/00758—Detection methods using a prescan
    • 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
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00763—Action taken as a result of detection
    • H04N1/00766—Storing data
    • 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
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original
    • H04N1/4074—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original using histograms

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
DE69223172T 1991-04-19 1992-04-21 Abtastlesemethode Expired - Lifetime DE69223172T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3088783A JP2957733B2 (ja) 1991-04-19 1991-04-19 原稿の端部検出方法
JP3143383A JPH04368058A (ja) 1991-06-14 1991-06-14 自動濃度測定方法

Publications (2)

Publication Number Publication Date
DE69223172D1 true DE69223172D1 (de) 1998-01-02
DE69223172T2 DE69223172T2 (de) 1998-03-12

Family

ID=26430124

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69223172T Expired - Lifetime DE69223172T2 (de) 1991-04-19 1992-04-21 Abtastlesemethode

Country Status (3)

Country Link
US (1) US5214294A (de)
EP (1) EP0509549B1 (de)
DE (1) DE69223172T2 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318526C2 (de) * 1992-06-10 1999-11-25 Canon Kk Bildeingabevorrichtung
US5818976A (en) * 1993-10-25 1998-10-06 Visioneer, Inc. Method and apparatus for document skew and size/shape detection
JPH07283901A (ja) * 1994-04-07 1995-10-27 Fujitsu Ltd 画像読み取り装置における用紙端部検出装置及び用紙端部検出装置付き画像読み取り装置
JP3334385B2 (ja) * 1994-12-20 2002-10-15 セイコーエプソン株式会社 画像読み取り装置および読み取り方法
DE19506467A1 (de) * 1995-02-24 1996-08-29 Koenig & Bauer Albert Ag Vorrichtung und Verfahren zum Messen einer Lage einer Kante von Bahnen oder Bogen
JPH08307683A (ja) * 1995-04-28 1996-11-22 Minolta Co Ltd 画像処理装置
US5729024A (en) * 1995-05-08 1998-03-17 Ricoh Company, Ltd. Original edge detecting system and optical sensor
JP3568279B2 (ja) * 1995-06-30 2004-09-22 富士写真フイルム株式会社 画像再生方法および装置
US5633745A (en) * 1995-09-08 1997-05-27 Umax Data System Inc. To drive the optical system independently by CPU in flatbed scanners
IT1280471B1 (it) * 1995-09-20 1998-01-20 Olivetti & Co Spa Metodo per il rilevamento del bordo di inizio di un documento e relativo dispositivo
AUPN743096A0 (en) * 1996-01-05 1996-02-01 Canon Kabushiki Kaisha Force field halftoning
JPH09307676A (ja) * 1996-03-14 1997-11-28 Nikon Corp 画像読取装置
DE19700318A1 (de) * 1997-01-08 1998-07-09 Heidelberger Druckmasch Ag Verfahren zur Bestimmung der Geometriedaten von Abtastvorlagen
AU6178398A (en) * 1997-02-21 1998-09-09 Board Of Regents Of The University And Community College System Of Nevada, The Method and system for computerized high-rate image processing
US6215561B1 (en) * 1997-02-28 2001-04-10 Seiko Epson Corporation Image processing apparatus and image processing method
EP0876048B1 (de) * 1997-05-01 2003-09-10 Ricoh Company, Ltd. Vorrichtung zum Erfassen der Grösse und Position von Dokumenten für einen elektrophotographischen Kopierer
JP3904162B2 (ja) * 1997-05-29 2007-04-11 富士フイルム株式会社 オートセットアップ処理方法
JP4216450B2 (ja) * 2000-09-01 2009-01-28 ローム株式会社 画像処理装置
US6930804B2 (en) 2001-02-01 2005-08-16 Xerox Corporation System and method for automatically detecting edges of scanned documents
US6741741B2 (en) * 2001-02-01 2004-05-25 Xerox Corporation System and method for automatically detecting edges of scanned documents
KR100450839B1 (ko) * 2001-10-19 2004-10-01 삼성전자주식회사 3차원 영상에서의 에지 검출장치 및 방법
US7456379B2 (en) * 2003-02-03 2008-11-25 Kodak Graphic Communications Canada Company Printing plate registration and optical alignment device including locating at least a part of a reference edge in at least one digital camera image
US7830548B2 (en) * 2006-01-09 2010-11-09 Adobe Systems Incorporated Method and apparatus for generating color toning curves
US20130202155A1 (en) * 2012-02-03 2013-08-08 Gopal Gudhur Karanam Low-cost lane marker detection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6239842A (ja) * 1985-08-15 1987-02-20 Fuji Photo Film Co Ltd 放射線画像情報読取方法
JPS6361579A (ja) * 1986-09-02 1988-03-17 Fuji Photo Film Co Ltd 画像処理方法及び装置
DE3743927C2 (de) * 1986-12-26 1994-11-03 Fuji Photo Film Co Ltd Vorrichtung zum Erfassen eines Bildrandes
JP2525859B2 (ja) * 1988-03-31 1996-08-21 大日本スクリーン製造株式会社 ハイライト・シャド―濃度値の設定方法

Also Published As

Publication number Publication date
US5214294A (en) 1993-05-25
EP0509549A2 (de) 1992-10-21
EP0509549A3 (en) 1994-06-22
EP0509549B1 (de) 1997-11-19
DE69223172T2 (de) 1998-03-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: FUJIFILM CORP., TOKIO/TOKYO, JP

R071 Expiry of right

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Country of ref document: EP