JPS56117477A - Coding system of half-tone picture - Google Patents

Coding system of half-tone picture

Info

Publication number
JPS56117477A
JPS56117477A JP2077880A JP2077880A JPS56117477A JP S56117477 A JPS56117477 A JP S56117477A JP 2077880 A JP2077880 A JP 2077880A JP 2077880 A JP2077880 A JP 2077880A JP S56117477 A JPS56117477 A JP S56117477A
Authority
JP
Japan
Prior art keywords
dither matrix
rom
level
coding
picture
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
JP2077880A
Other languages
English (en)
Inventor
Koichi Ejiri
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 JP2077880A priority Critical patent/JPS56117477A/ja
Publication of JPS56117477A publication Critical patent/JPS56117477A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
JP2077880A 1980-02-21 1980-02-21 Coding system of half-tone picture Pending JPS56117477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2077880A JPS56117477A (en) 1980-02-21 1980-02-21 Coding system of half-tone picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2077880A JPS56117477A (en) 1980-02-21 1980-02-21 Coding system of half-tone picture

Publications (1)

Publication Number Publication Date
JPS56117477A true JPS56117477A (en) 1981-09-14

Family

ID=12036595

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2077880A Pending JPS56117477A (en) 1980-02-21 1980-02-21 Coding system of half-tone picture

Country Status (1)

Country Link
JP (1) JPS56117477A (ja)

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