JPS5651158A - Reproducing method of binary picture - Google Patents

Reproducing method of binary picture

Info

Publication number
JPS5651158A
JPS5651158A JP12751279A JP12751279A JPS5651158A JP S5651158 A JPS5651158 A JP S5651158A JP 12751279 A JP12751279 A JP 12751279A JP 12751279 A JP12751279 A JP 12751279A JP S5651158 A JPS5651158 A JP S5651158A
Authority
JP
Japan
Prior art keywords
picture element
picture
output
binary
density
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
JP12751279A
Other languages
Japanese (ja)
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 JP12751279A priority Critical patent/JPS5651158A/en
Publication of JPS5651158A publication Critical patent/JPS5651158A/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

Landscapes

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

Abstract

PURPOSE:To obtain reproducing pictures of a high pocture quality even for pictures including half-tone, by using the density level, which is obtained by averaging picture elements around the object picture element, as the output density of every picture element coded to a binary when an image is reproduced in the receiving side. CONSTITUTION:The image obtained by making densities of the original picture into binaries by the organic dither method is transmipted. In the receiving side, the density level obtained by averaging picture elements around the object picture element is output as the output density for each picture element coded into a binary. That is, output density value S of picture element E is determined by S=C1(A+ B+C+D+E+F+G+H+I). Here, C1 is equal to 4/9.
JP12751279A 1979-10-03 1979-10-03 Reproducing method of binary picture Pending JPS5651158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12751279A JPS5651158A (en) 1979-10-03 1979-10-03 Reproducing method of binary picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12751279A JPS5651158A (en) 1979-10-03 1979-10-03 Reproducing method of binary picture

Publications (1)

Publication Number Publication Date
JPS5651158A true JPS5651158A (en) 1981-05-08

Family

ID=14961827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12751279A Pending JPS5651158A (en) 1979-10-03 1979-10-03 Reproducing method of binary picture

Country Status (1)

Country Link
JP (1) JPS5651158A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860186A (en) * 1981-10-06 1983-04-09 バブコツク日立株式会社 Burnt lump cooling device with steam generating section
JPS5892055A (en) * 1981-11-26 1983-06-01 Hitachi Ltd Picture information transmitter
JPS59128730U (en) * 1983-02-18 1984-08-30 三洋電機株式会社 liquid phase growth equipment
JPS61208828A (en) * 1985-03-14 1986-09-17 Hitachi Cable Ltd Liquid crystal epitaxial growth method of multilayers
JPS61248166A (en) * 1985-04-25 1986-11-05 Matsushita Electric Ind Co Ltd Jaggy removing device
JPS622528A (en) * 1985-06-27 1987-01-08 Matsushita Electric Ind Co Ltd Manufacture device for liquid-phase epitaxial growth solution
JPS62128368A (en) * 1985-11-29 1987-06-10 Ricoh Co Ltd Gradation data expanding device
US4827352A (en) * 1986-03-17 1989-05-02 Kabushiki Kaisha Toshiba Method of and apparatus for changing the pixel density of a binary image using average values calculated from sets of reference pixels selected from the binary image
JPH03192969A (en) * 1989-12-22 1991-08-22 Canon Inc Picture processor
JPH05260306A (en) * 1991-09-13 1993-10-08 Canon Inc Image processor

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860186A (en) * 1981-10-06 1983-04-09 バブコツク日立株式会社 Burnt lump cooling device with steam generating section
JPS5892055A (en) * 1981-11-26 1983-06-01 Hitachi Ltd Picture information transmitter
JPH025530Y2 (en) * 1983-02-18 1990-02-09
JPS59128730U (en) * 1983-02-18 1984-08-30 三洋電機株式会社 liquid phase growth equipment
JPS61208828A (en) * 1985-03-14 1986-09-17 Hitachi Cable Ltd Liquid crystal epitaxial growth method of multilayers
JPH0330980B2 (en) * 1985-03-14 1991-05-01 Hitachi Cable
JPS61248166A (en) * 1985-04-25 1986-11-05 Matsushita Electric Ind Co Ltd Jaggy removing device
JPH0322689B2 (en) * 1985-06-27 1991-03-27 Matsushita Electric Ind Co Ltd
JPS622528A (en) * 1985-06-27 1987-01-08 Matsushita Electric Ind Co Ltd Manufacture device for liquid-phase epitaxial growth solution
JPS62128368A (en) * 1985-11-29 1987-06-10 Ricoh Co Ltd Gradation data expanding device
JPH0740295B2 (en) * 1985-11-29 1995-05-01 株式会社リコー Gradation data expansion device
US4827352A (en) * 1986-03-17 1989-05-02 Kabushiki Kaisha Toshiba Method of and apparatus for changing the pixel density of a binary image using average values calculated from sets of reference pixels selected from the binary image
JPH03192969A (en) * 1989-12-22 1991-08-22 Canon Inc Picture processor
JPH05260306A (en) * 1991-09-13 1993-10-08 Canon Inc Image processor

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