JPS57167028A - Method and apparatus for correction for image quality in simulation of printed matter - Google Patents

Method and apparatus for correction for image quality in simulation of printed matter

Info

Publication number
JPS57167028A
JPS57167028A JP5222181A JP5222181A JPS57167028A JP S57167028 A JPS57167028 A JP S57167028A JP 5222181 A JP5222181 A JP 5222181A JP 5222181 A JP5222181 A JP 5222181A JP S57167028 A JPS57167028 A JP S57167028A
Authority
JP
Japan
Prior art keywords
color
signals
correction
circuits
amount
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.)
Granted
Application number
JP5222181A
Other languages
Japanese (ja)
Other versions
JPH0145272B2 (en
Inventor
Kisaburo Shimura
Tetsuji Yarita
Hironobu Suda
Koji Kobayashi
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.)
Hitachi Denshi KK
Toppan Inc
Original Assignee
Hitachi Denshi KK
Toppan Printing 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 Hitachi Denshi KK, Toppan Printing Co Ltd filed Critical Hitachi Denshi KK
Priority to JP5222181A priority Critical patent/JPS57167028A/en
Priority to EP82102815A priority patent/EP0063286B1/en
Priority to DE8282102815T priority patent/DE3276728D1/en
Priority to US06/365,643 priority patent/US4454536A/en
Publication of JPS57167028A publication Critical patent/JPS57167028A/en
Publication of JPH0145272B2 publication Critical patent/JPH0145272B2/ja
Granted 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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6011—Colour correction or control with simulation on a subsidiary picture reproducer

Landscapes

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

Abstract

PURPOSE:To obtain color correcting method possible for preferably approximation, even in case the background color amount is comparatively high, by correcting so as to remove the amount of color on a color monitor in a few rate. CONSTITUTION:Input signals Y, M, C and K are introduced to relating secondary color detection circuits 11-13, black X primary color detection circuits 14- 16, a quinary color detecting circuit 17, black X secondary color detection circuits 18-20, and a quaric color detection circuit 21, and a color signal for overlapping is inputted to duplicated correction circuits 31-40 and color correction circuits 51-54 and added with the original signals Y, M, C and K. The original signals are inverted signals and signals -D, -E,...-Z are non-inverting signals, then the amount of color for corresponding overlap is reduced by multiplying correction factors d, e,...z with the signals and adding the result to the original signals. Thus, the color correction possible for preferable approximation is made oven in case background color removal is comparatively high.
JP5222181A 1981-04-07 1981-04-07 Method and apparatus for correction for image quality in simulation of printed matter Granted JPS57167028A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5222181A JPS57167028A (en) 1981-04-07 1981-04-07 Method and apparatus for correction for image quality in simulation of printed matter
EP82102815A EP0063286B1 (en) 1981-04-07 1982-04-02 Method and apparatus for correcting video signals in colour printing simulation
DE8282102815T DE3276728D1 (en) 1981-04-07 1982-04-02 Method and apparatus for correcting video signals in colour printing simulation
US06/365,643 US4454536A (en) 1981-04-07 1982-04-05 Method and apparatus for correcting video signals in color printing simulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5222181A JPS57167028A (en) 1981-04-07 1981-04-07 Method and apparatus for correction for image quality in simulation of printed matter

Publications (2)

Publication Number Publication Date
JPS57167028A true JPS57167028A (en) 1982-10-14
JPH0145272B2 JPH0145272B2 (en) 1989-10-03

Family

ID=12908688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5222181A Granted JPS57167028A (en) 1981-04-07 1981-04-07 Method and apparatus for correction for image quality in simulation of printed matter

Country Status (1)

Country Link
JP (1) JPS57167028A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349503A (en) * 1976-10-18 1978-05-06 Dainippon Screen Mfg Reproduced color indicating method and calculating device for reproduced color indicating apparatus for multiicolor printed matters

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349503A (en) * 1976-10-18 1978-05-06 Dainippon Screen Mfg Reproduced color indicating method and calculating device for reproduced color indicating apparatus for multiicolor printed matters

Also Published As

Publication number Publication date
JPH0145272B2 (en) 1989-10-03

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