GB1424410A - Methods of and systems for sharpness in the reproduction of continuous-tone pictures - Google Patents

Methods of and systems for sharpness in the reproduction of continuous-tone pictures

Info

Publication number
GB1424410A
GB1424410A GB2607173A GB2607173A GB1424410A GB 1424410 A GB1424410 A GB 1424410A GB 2607173 A GB2607173 A GB 2607173A GB 2607173 A GB2607173 A GB 2607173A GB 1424410 A GB1424410 A GB 1424410A
Authority
GB
United Kingdom
Prior art keywords
transistor
signal
photo
detector
sharpness
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
Application number
GB2607173A
Other languages
English (en)
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.)
Dr Ing Rudolf Hell GmbH
Original Assignee
Dr Ing Rudolf Hell GmbH
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
Application filed by Dr Ing Rudolf Hell GmbH filed Critical Dr Ing Rudolf Hell GmbH
Publication of GB1424410A publication Critical patent/GB1424410A/en
Expired 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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement
    • 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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/58—Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Color Image Communication Systems (AREA)
  • Image Processing (AREA)
GB2607173A 1972-06-02 1973-05-31 Methods of and systems for sharpness in the reproduction of continuous-tone pictures Expired GB1424410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722226990 DE2226990C3 (de) 1972-06-02 1972-06-02 Anordnung zur Verbesserung der Schärfe bei der Aufzeichnung von Halbtonbildern

Publications (1)

Publication Number Publication Date
GB1424410A true GB1424410A (en) 1976-02-11

Family

ID=5846691

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2607173A Expired GB1424410A (en) 1972-06-02 1973-05-31 Methods of and systems for sharpness in the reproduction of continuous-tone pictures

Country Status (7)

Country Link
JP (3) JPS5513025B2 (ja)
CH (1) CH551645A (ja)
DD (1) DD103978A5 (ja)
DE (1) DE2226990C3 (ja)
FR (1) FR2187139A5 (ja)
GB (1) GB1424410A (ja)
SU (1) SU503552A3 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147767A (en) * 1981-05-11 1985-05-15 Canon Kk Image processing apparatus

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50156815A (ja) * 1974-06-07 1975-12-18
JPS5264001U (ja) * 1975-11-06 1977-05-12
DE2708421C2 (de) * 1977-02-26 1982-01-14 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zum Mischen von Signalen bei der Druckformherstellung
JPS55146451A (en) * 1979-05-02 1980-11-14 Dainippon Screen Mfg Co Ltd Sharpness emphasis method in image scanning recorder
FR2467078A1 (fr) * 1979-10-11 1981-04-17 Machulka Grigory Dispositif a laser pour la fabrication des formes d'impression
JPS5814270A (ja) * 1981-07-17 1983-01-27 Fuji Photo Film Co Ltd 画像走査記録方法
DE3139483C2 (de) * 1981-10-03 1985-06-13 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren und Schaltungsanordnung zur Kontraststeigerung
EP0098319B1 (de) * 1982-07-03 1986-03-26 DR.-ING. RUDOLF HELL GmbH Verfahren und Anordnung zur Kontraststeigerung
JPS6054570A (ja) * 1983-09-05 1985-03-29 Fuji Photo Film Co Ltd 画像の鮮鋭度強調方式
JP2515737B2 (ja) * 1986-04-25 1996-07-10 株式会社日立製作所 画像強調方法
GB8526817D0 (en) * 1985-10-31 1985-12-04 Crosfield Electronics Ltd Image enhancement
JPS62176370A (ja) * 1986-01-30 1987-08-03 Usac Electronics Ind Co Ltd イメ−ジリ−ダ
JPS62272757A (ja) * 1986-05-21 1987-11-26 Matsushita Graphic Commun Syst Inc 部分疑似中間調画像読取装置
JPS62297991A (ja) * 1986-06-18 1987-12-25 芝浦メカトロニクス株式会社 空き缶回収機
JPH0778625B2 (ja) * 1988-11-30 1995-08-23 凸版印刷株式会社 スキャナ装置
US6181819B1 (en) 1989-08-02 2001-01-30 Canon Kabushiki Kaisha Image processing apparatus including means for judging a chromatic portion of an image
JP3029116B2 (ja) * 1989-08-02 2000-04-04 キヤノン株式会社 画像処理方法
JPH05246009A (ja) * 1992-03-06 1993-09-24 Kanazawa Seal:Kk 点字の形成方法
JPWO2013035661A1 (ja) * 2011-09-07 2015-03-23 株式会社ニコン 基板処理装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557557B2 (ja) * 1972-08-16 1980-02-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147767A (en) * 1981-05-11 1985-05-15 Canon Kk Image processing apparatus

Also Published As

Publication number Publication date
DD103978A5 (ja) 1974-02-12
DE2226990A1 (de) 1973-12-13
CH551645A (de) 1974-07-15
JPS6122296B2 (ja) 1986-05-31
JPS5540493A (en) 1980-03-21
DE2226990B2 (de) 1975-04-30
JPS5513025B2 (ja) 1980-04-05
FR2187139A5 (ja) 1974-01-11
SU503552A3 (ru) 1976-02-15
JPS6124708B2 (ja) 1986-06-12
JPS5540492A (en) 1980-03-21
JPS4957716A (ja) 1974-06-05
DE2226990C3 (de) 1976-01-02

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930530