JPH0456508B2 - - Google Patents

Info

Publication number
JPH0456508B2
JPH0456508B2 JP56006062A JP606281A JPH0456508B2 JP H0456508 B2 JPH0456508 B2 JP H0456508B2 JP 56006062 A JP56006062 A JP 56006062A JP 606281 A JP606281 A JP 606281A JP H0456508 B2 JPH0456508 B2 JP H0456508B2
Authority
JP
Japan
Prior art keywords
processing
density
level data
image
threshold level
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
JP56006062A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57119562A (en
Inventor
Katsuhiro Watai
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56006062A priority Critical patent/JPS57119562A/ja
Publication of JPS57119562A publication Critical patent/JPS57119562A/ja
Publication of JPH0456508B2 publication Critical patent/JPH0456508B2/ja
Granted 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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Character Input (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
JP56006062A 1981-01-19 1981-01-19 Binary-coded gradation processing method for analog picture signal Granted JPS57119562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56006062A JPS57119562A (en) 1981-01-19 1981-01-19 Binary-coded gradation processing method for analog picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56006062A JPS57119562A (en) 1981-01-19 1981-01-19 Binary-coded gradation processing method for analog picture signal

Publications (2)

Publication Number Publication Date
JPS57119562A JPS57119562A (en) 1982-07-26
JPH0456508B2 true JPH0456508B2 (fr) 1992-09-08

Family

ID=11628095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56006062A Granted JPS57119562A (en) 1981-01-19 1981-01-19 Binary-coded gradation processing method for analog picture signal

Country Status (1)

Country Link
JP (1) JPS57119562A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0620232B2 (ja) * 1981-03-30 1994-03-16 キヤノン株式会社 画像処理装置
JPS59122080A (ja) * 1982-12-27 1984-07-14 Leo Giken:Kk 網点画像の発生方法
JPS6229369A (ja) * 1985-07-30 1987-02-07 Canon Inc 画像二値化回路
JPS6229370A (ja) * 1985-07-30 1987-02-07 Canon Inc 画像読取装置
JPS62188470A (ja) * 1986-02-13 1987-08-18 Toshiba Corp 画像信号処理装置
JPH06101797B2 (ja) * 1986-05-09 1994-12-12 株式会社リコー カラ−記録装置
JP2657648B2 (ja) * 1987-07-17 1997-09-24 ニスカ 株式会社 画像入力装置
JP2553871B2 (ja) * 1987-07-17 1996-11-13 ニスカ株式会社 画像入力装置
JP2566043B2 (ja) * 1990-05-25 1996-12-25 三菱電機株式会社 プリンタ
JP6780350B2 (ja) * 2016-07-29 2020-11-04 船井電機株式会社 画像処理装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580958A (en) * 1978-12-15 1980-06-18 Toshiba Corp Picture signal binary coding system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580958A (en) * 1978-12-15 1980-06-18 Toshiba Corp Picture signal binary coding system

Also Published As

Publication number Publication date
JPS57119562A (en) 1982-07-26

Similar Documents

Publication Publication Date Title
US6285464B1 (en) Apparatus and method for producing a half-tone image
JPS6198069A (ja) 画像処理装置
US4897734A (en) Image processing apparatus
JPH045305B2 (fr)
JPH03193472A (ja) 画像処理装置
US5130821A (en) Method and apparatus for digital halftoning employing density distribution for selection of a threshold template
JPH0456508B2 (fr)
JPH0356035B2 (fr)
EP0454088B1 (fr) Appareil de traitement d'images
JP3823562B2 (ja) 画像処理装置
JPH0147946B2 (fr)
JP3373874B2 (ja) 画像処理装置
JPH01222575A (ja) 画像信号の２値化回路
JPH0457274B2 (fr)
JPH0620232B2 (ja) 画像処理装置
JPS62239667A (ja) 画像処理装置
JP3984693B2 (ja) 画像処理装置及び方法
JPH0117310B2 (fr)
JPH02271423A (ja) 疑似中間調画像記録装置
JP2683020B2 (ja) 画像処理装置
JPS61131683A (ja) 画像処理装置
JPS5970078A (ja) 画像処理方法
JPH0519353B2 (fr)
JPS5848570A (ja) デジタル中間調表現方法
JPH02292953A (ja) 中間調画像変換装置