JPS57161747A - Method and device for selecting decomposition condition - Google Patents

Method and device for selecting decomposition condition

Info

Publication number
JPS57161747A
JPS57161747A JP56047903A JP4790381A JPS57161747A JP S57161747 A JPS57161747 A JP S57161747A JP 56047903 A JP56047903 A JP 56047903A JP 4790381 A JP4790381 A JP 4790381A JP S57161747 A JPS57161747 A JP S57161747A
Authority
JP
Japan
Prior art keywords
point
density
points
signal
mark
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
JP56047903A
Other languages
Japanese (ja)
Other versions
JPS6335150B2 (en
Inventor
Mitsuhiko Yamada
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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing 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 Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Priority to JP56047903A priority Critical patent/JPS57161747A/en
Publication of JPS57161747A publication Critical patent/JPS57161747A/en
Publication of JPS6335150B2 publication Critical patent/JPS6335150B2/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
    • H04N1/40—Picture signal circuits
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original

Landscapes

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

Abstract

PURPOSE:To decide on the optimum values of a highlight point and a shadow point by inputting density values which correspond to >=2 points from an optical system, and performing prescribed arithmetic. CONSTITUTION:The density value of a point (mark O) considered to be a highlight point on an original and that of a point (mark ) considered to a shadow point are supplied to a processing circuit 2 through an optical system 1. The circuit 2 regards as the highlight point a point where each density signal is balanced most and the density of a signal between points is least or relatively small, or where the density of a signal between points is least and the signals are balanced most between the points. Then, a mark showing the position of each point is added upon occasion and supplied to a display and output device 3, thereby realizing visual display.
JP56047903A 1981-03-30 1981-03-30 Method and device for selecting decomposition condition Granted JPS57161747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56047903A JPS57161747A (en) 1981-03-30 1981-03-30 Method and device for selecting decomposition condition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56047903A JPS57161747A (en) 1981-03-30 1981-03-30 Method and device for selecting decomposition condition

Publications (2)

Publication Number Publication Date
JPS57161747A true JPS57161747A (en) 1982-10-05
JPS6335150B2 JPS6335150B2 (en) 1988-07-13

Family

ID=12788345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56047903A Granted JPS57161747A (en) 1981-03-30 1981-03-30 Method and device for selecting decomposition condition

Country Status (1)

Country Link
JP (1) JPS57161747A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147572A (en) * 1983-02-10 1984-08-23 Fuji Xerox Co Ltd Color picture information processing device
JPS62111569A (en) * 1985-11-09 1987-05-22 Fuji Photo Film Co Ltd Automatic setting method for output signal processing condition in image input/output system
JPH01221247A (en) * 1988-02-29 1989-09-04 Canon Inc Color image processing and device therefor
JPH053716U (en) * 1991-06-28 1993-01-22 黒田精工株式会社 Ball screw

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02156358A (en) * 1988-12-09 1990-06-15 Nitsuko Corp Data distributing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565958A (en) * 1978-11-08 1980-05-17 Hell Rudolf Dr Ing Gmbh Method and device for recorrecting standard color correction in colored picture recording

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565958A (en) * 1978-11-08 1980-05-17 Hell Rudolf Dr Ing Gmbh Method and device for recorrecting standard color correction in colored picture recording

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147572A (en) * 1983-02-10 1984-08-23 Fuji Xerox Co Ltd Color picture information processing device
JPH0422070B2 (en) * 1983-02-10 1992-04-15 Fuji Xerox Co Ltd
JPS62111569A (en) * 1985-11-09 1987-05-22 Fuji Photo Film Co Ltd Automatic setting method for output signal processing condition in image input/output system
JPH01221247A (en) * 1988-02-29 1989-09-04 Canon Inc Color image processing and device therefor
JPH053716U (en) * 1991-06-28 1993-01-22 黒田精工株式会社 Ball screw

Also Published As

Publication number Publication date
JPS6335150B2 (en) 1988-07-13

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