JPS5744372A - Method and device for coding image signal - Google Patents

Method and device for coding image signal

Info

Publication number
JPS5744372A
JPS5744372A JP56099573A JP9957381A JPS5744372A JP S5744372 A JPS5744372 A JP S5744372A JP 56099573 A JP56099573 A JP 56099573A JP 9957381 A JP9957381 A JP 9957381A JP S5744372 A JPS5744372 A JP S5744372A
Authority
JP
Japan
Prior art keywords
image signal
coding image
coding
signal
image
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
JP56099573A
Other languages
English (en)
Inventor
Posutoru Uorufugangu
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of JPS5744372A publication Critical patent/JPS5744372A/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
    • H04N1/40—Picture signal circuits
    • H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Image Input (AREA)
JP56099573A 1980-06-27 1981-06-26 Method and device for coding image signal Pending JPS5744372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803024322 DE3024322A1 (de) 1980-06-27 1980-06-27 Verfahren zur codierung von elektrischen signalen, die bei der abtastung eines grafischen musters mit aus text und bildern gemischtem inhalt gewonnen werden

Publications (1)

Publication Number Publication Date
JPS5744372A true JPS5744372A (en) 1982-03-12

Family

ID=6105740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56099573A Pending JPS5744372A (en) 1980-06-27 1981-06-26 Method and device for coding image signal

Country Status (4)

Country Link
EP (1) EP0042981B1 (ja)
JP (1) JPS5744372A (ja)
CA (1) CA1179778A (ja)
DE (1) DE3024322A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58215882A (ja) * 1982-06-07 1983-12-15 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン ドキユメント分類方法
EP0163898A3 (de) * 1984-04-27 1986-03-05 Siemens Aktiengesellschaft Verfahren zur Codierung von Faksimiles
US5086434A (en) * 1985-09-30 1992-02-04 Canon Kabushiki Kaisha Data communication process and apparatus for data transmission in blocks which may include mixed data types
US5001576A (en) * 1988-09-28 1991-03-19 Konica Corporation Image processor with improved discrimination between character image and tonal image
JPH0722343B2 (ja) * 1989-12-15 1995-03-08 大日本スクリーン製造株式会社 画像データ圧縮装置
JP3072776B2 (ja) * 1990-12-19 2000-08-07 キヤノン株式会社 画像処理装置
US5414530A (en) * 1991-03-12 1995-05-09 Canon Kabushiki Kaisha Image recording method and apparatus
JPH04323963A (ja) * 1991-04-23 1992-11-13 Canon Inc 画像処理方法及び装置
JPH08125868A (ja) * 1994-10-19 1996-05-17 Canon Inc 画像処理装置及び方法
US6298173B1 (en) * 1997-10-03 2001-10-02 Matsushita Electric Corporation Of America Storage management system for document image database
US6301391B1 (en) 1997-10-15 2001-10-09 Ricoh Company, Ltd. Coding apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483317A (en) * 1966-06-10 1969-12-09 Xerox Corp Selective encoding technique for band-width reduction in graphic communication systems
US3987412A (en) * 1975-01-27 1976-10-19 International Business Machines Corporation Method and apparatus for image data compression utilizing boundary following of the exterior and interior borders of objects
DE2516332A1 (de) * 1975-04-15 1976-10-28 Siemens Ag Verfahren zur codierung von elektrischen signalen, die bei der abtastung eines graphischen musters mit aus text und bild gemischtem inhalt gewonnen werden
JPS52114212A (en) * 1976-03-22 1977-09-24 Fujitsu Ltd Information density determining circuit
BE857245A (nl) * 1977-07-28 1977-11-14 Belge Lampes Mat Electr Mble Faksimileschakeling
US4124871A (en) * 1977-08-31 1978-11-07 International Business Machines Corporation Image data resolution change apparatus and process utilizing boundary compression coding of objects
DE2825912A1 (de) * 1978-06-13 1980-01-03 Siemens Ag Verfahren zur uebertragung von aufzeichnungen mit gemischtem darstellungsinhalt auf einen sichtanzeigeschirm, insbesondere in fernsprechanlagen
US4194221A (en) * 1978-12-26 1980-03-18 Xerox Corporation Automatic multimode continuous halftone line copy reproduction

Also Published As

Publication number Publication date
DE3024322A1 (de) 1982-01-21
EP0042981B1 (de) 1984-03-14
CA1179778A (en) 1984-12-18
EP0042981A1 (de) 1982-01-06

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