JPS57127364A - Processing system of halftone facsimile signal - Google Patents

Processing system of halftone facsimile signal

Info

Publication number
JPS57127364A
JPS57127364A JP56012234A JP1223481A JPS57127364A JP S57127364 A JPS57127364 A JP S57127364A JP 56012234 A JP56012234 A JP 56012234A JP 1223481 A JP1223481 A JP 1223481A JP S57127364 A JPS57127364 A JP S57127364A
Authority
JP
Japan
Prior art keywords
gradation
information
block
picture
case
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.)
Pending
Application number
JP56012234A
Other languages
English (en)
Inventor
Makoto Kobayashi
Yoshihiro Jinbo
Tetsuji Yamamoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56012234A priority Critical patent/JPS57127364A/ja
Priority to US06/342,548 priority patent/US4409623A/en
Priority to FR8201450A priority patent/FR2499794B1/fr
Priority to DE3202913A priority patent/DE3202913C2/de
Priority to GB8202677A priority patent/GB2092416B/en
Publication of JPS57127364A publication Critical patent/JPS57127364A/ja
Pending 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
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/4105—Bandwidth or redundancy reduction for halftone screened pictures
JP56012234A 1981-01-31 1981-01-31 Processing system of halftone facsimile signal Pending JPS57127364A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56012234A JPS57127364A (en) 1981-01-31 1981-01-31 Processing system of halftone facsimile signal
US06/342,548 US4409623A (en) 1981-01-31 1982-01-25 Method and equipment for processing gray scale facsimile signal
FR8201450A FR2499794B1 (fr) 1981-01-31 1982-01-29 Procede et equipement de traitement de signal de fac-simile a echelle de gris
DE3202913A DE3202913C2 (de) 1981-01-31 1982-01-29 Verfahren und Vorrichtung zur Verarbeitung eines Grauwertkomponenten enthaltenden Faksimilesignals
GB8202677A GB2092416B (en) 1981-01-31 1982-01-29 Method and equipment for processing gray scale facsimile signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012234A JPS57127364A (en) 1981-01-31 1981-01-31 Processing system of halftone facsimile signal

Publications (1)

Publication Number Publication Date
JPS57127364A true JPS57127364A (en) 1982-08-07

Family

ID=11799672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012234A Pending JPS57127364A (en) 1981-01-31 1981-01-31 Processing system of halftone facsimile signal

Country Status (1)

Country Link
JP (1) JPS57127364A (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934766A (ja) * 1982-08-21 1984-02-25 Konishiroku Photo Ind Co Ltd 画像情報処理方法
JPS59171260A (ja) * 1983-03-17 1984-09-27 Nippon Telegr & Teleph Corp <Ntt> カラ−フアクシミリ信号符号化方式
JPS60204081A (ja) * 1984-03-27 1985-10-15 Nippon Telegr & Teleph Corp <Ntt> 画像情報符号化装置
JPS60248076A (ja) * 1984-05-24 1985-12-07 Matsushita Electric Ind Co Ltd 符号化方法及びその装置
JPS62154875A (ja) * 1985-12-26 1987-07-09 Konishiroku Photo Ind Co Ltd 階調画像圧縮方法
JPH0627917A (ja) * 1991-07-22 1994-02-04 Internatl Business Mach Corp <Ibm> ディスプレイシステム
JP2005078345A (ja) * 2003-08-29 2005-03-24 Canon Inc 画像処理装置、画像処理方法、コンピュータプログラム及びコンピュータ読み取り可能な記録媒体
US7432985B2 (en) 2003-03-26 2008-10-07 Canon Kabushiki Kaisha Image processing method
WO2009060517A1 (ja) * 2007-11-06 2009-05-14 Fujitsu Limited 画像処理装置、画像処理方法および画像処理プログラム
JP4893833B2 (ja) * 2007-11-06 2012-03-07 富士通株式会社 画像処理装置、画像処理方法および画像処理プログラム

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934766A (ja) * 1982-08-21 1984-02-25 Konishiroku Photo Ind Co Ltd 画像情報処理方法
JPH0436502B2 (ja) * 1982-08-21 1992-06-16 Konishiroku Photo Ind
JPS59171260A (ja) * 1983-03-17 1984-09-27 Nippon Telegr & Teleph Corp <Ntt> カラ−フアクシミリ信号符号化方式
JPS60204081A (ja) * 1984-03-27 1985-10-15 Nippon Telegr & Teleph Corp <Ntt> 画像情報符号化装置
JPS60248076A (ja) * 1984-05-24 1985-12-07 Matsushita Electric Ind Co Ltd 符号化方法及びその装置
JPH0423868B2 (ja) * 1984-05-24 1992-04-23 Matsushita Electric Ind Co Ltd
JPS62154875A (ja) * 1985-12-26 1987-07-09 Konishiroku Photo Ind Co Ltd 階調画像圧縮方法
JPH0577232B2 (ja) * 1985-12-26 1993-10-26 Konishiroku Photo Ind
JPH0627917A (ja) * 1991-07-22 1994-02-04 Internatl Business Mach Corp <Ibm> ディスプレイシステム
US7432985B2 (en) 2003-03-26 2008-10-07 Canon Kabushiki Kaisha Image processing method
JP2005078345A (ja) * 2003-08-29 2005-03-24 Canon Inc 画像処理装置、画像処理方法、コンピュータプログラム及びコンピュータ読み取り可能な記録媒体
JP4500521B2 (ja) * 2003-08-29 2010-07-14 キヤノン株式会社 画像処理装置、画像処理方法、コンピュータプログラム及びコンピュータ読み取り可能な記録媒体
WO2009060517A1 (ja) * 2007-11-06 2009-05-14 Fujitsu Limited 画像処理装置、画像処理方法および画像処理プログラム
WO2009060633A1 (ja) * 2007-11-06 2009-05-14 Fujitsu Limited 画像処理装置、画像処理方法および画像処理プログラム
JP4893833B2 (ja) * 2007-11-06 2012-03-07 富士通株式会社 画像処理装置、画像処理方法および画像処理プログラム
US8254636B2 (en) 2007-11-06 2012-08-28 Fujitsu Limited Image processing apparatus and image processing method

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