JPS56116183A - Processing system for binary picture - Google Patents

Processing system for binary picture

Info

Publication number
JPS56116183A
JPS56116183A JP1889580A JP1889580A JPS56116183A JP S56116183 A JPS56116183 A JP S56116183A JP 1889580 A JP1889580 A JP 1889580A JP 1889580 A JP1889580 A JP 1889580A JP S56116183 A JPS56116183 A JP S56116183A
Authority
JP
Japan
Prior art keywords
circuit
line
line density
fine
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
JP1889580A
Other languages
Japanese (ja)
Inventor
Yukio Takahashi
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 JP1889580A priority Critical patent/JPS56116183A/en
Publication of JPS56116183A publication Critical patent/JPS56116183A/en
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
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To transmit the binary picture with shrinked line width and line density and to pick up original picture at reception side with enlargement, by providing fine line circuit, line density shrink circuit, line density extension circuit and line thick circuit. CONSTITUTION:The video signal from the input terminal 11 is rejected for the unevenness added with facsimile picture isolated points of white video elements at the smoothing circuit 12 and fed to the fine line circuit 13. The fine line circuit 13 shrinks uniformly the line width of longitudinal, transversal and skew lines of facsimile picture and adds the video information which is made fine, to the line density shrinking circuit 14, where the line density is shrinked and the result is fed again to the circuit 15. The fine line circuit 15 is operated to reject redundancy more and transmits the result via the code conversion circuit 16. At the reception side, decoding is made at the decoding conversion circuit 18 and the line density is enlarged at the line density enlarging circuit 19 and the size of original picture with enlargement is picked up via the line thick circuit 21.
JP1889580A 1980-02-18 1980-02-18 Processing system for binary picture Pending JPS56116183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1889580A JPS56116183A (en) 1980-02-18 1980-02-18 Processing system for binary picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1889580A JPS56116183A (en) 1980-02-18 1980-02-18 Processing system for binary picture

Publications (1)

Publication Number Publication Date
JPS56116183A true JPS56116183A (en) 1981-09-11

Family

ID=11984300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1889580A Pending JPS56116183A (en) 1980-02-18 1980-02-18 Processing system for binary picture

Country Status (1)

Country Link
JP (1) JPS56116183A (en)

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