JPS6429079A - Chrominance signal correction system - Google Patents

Chrominance signal correction system

Info

Publication number
JPS6429079A
JPS6429079A JP18487787A JP18487787A JPS6429079A JP S6429079 A JPS6429079 A JP S6429079A JP 18487787 A JP18487787 A JP 18487787A JP 18487787 A JP18487787 A JP 18487787A JP S6429079 A JPS6429079 A JP S6429079A
Authority
JP
Japan
Prior art keywords
hue
correction value
correction
calculated
calculates
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
JP18487787A
Other languages
Japanese (ja)
Inventor
Yoshimitsu Ishitobi
Toshie Araki
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP18487787A priority Critical patent/JPS6429079A/en
Priority to GB8817309A priority patent/GB2208460A/en
Publication of JPS6429079A publication Critical patent/JPS6429079A/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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6075—Corrections to the hue
    • 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

Landscapes

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

Abstract

PURPOSE:To upgrade the accuracy of correction by calculating a correction value by using the correction matrices adjacent to two reference color selected from the hue of an input color signal, weighting the correction value as prescribed, and synthesizing it to finally obtain a correction value. CONSTITUTION:A color hue calculation means 1 calculates the hue of an input color signal, and selects two kinds of reference colors which are the same hue as the input signal or a hue close to the input signal. By using the correction matrices generated for the selected reference colors, a correction value calculation means 2 calculates a correction value for the input color signal. A distance ratio calculation means 3 calculates the ratio of distance in a hue space between the hue of an input color signal calculated by the means 1 and the two kinds of reference colors selected by the means 1. A correction value synthesizing means 4 synthesizes the correction value calculated by the means 2 as weighting it by the distance ratio of the hue space calculated by the means 3, and thus a final correction value is calculated.
JP18487787A 1987-07-24 1987-07-24 Chrominance signal correction system Pending JPS6429079A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18487787A JPS6429079A (en) 1987-07-24 1987-07-24 Chrominance signal correction system
GB8817309A GB2208460A (en) 1987-07-24 1988-07-20 Color signal compensating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18487787A JPS6429079A (en) 1987-07-24 1987-07-24 Chrominance signal correction system

Publications (1)

Publication Number Publication Date
JPS6429079A true JPS6429079A (en) 1989-01-31

Family

ID=16160877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18487787A Pending JPS6429079A (en) 1987-07-24 1987-07-24 Chrominance signal correction system

Country Status (2)

Country Link
JP (1) JPS6429079A (en)
GB (1) GB2208460A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005323376A (en) * 2004-05-06 2005-11-17 Samsung Electronics Co Ltd Apparatus and method for adjusting primary color component of image, and computer-readable recording medium for recording program therefor
JP2007194805A (en) * 2006-01-18 2007-08-02 Sony Corp Color transformation device and method, recording medium, and program
JP2007282131A (en) * 2006-04-11 2007-10-25 Sony Corp Imaging apparatus, video signal processing circuit, video signal processing method, and computer program
JP2012175448A (en) * 2011-02-22 2012-09-10 Fuji Xerox Co Ltd Color processing device and color processing program

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561604A (en) 1988-12-08 1996-10-01 Hallmark Cards, Incorporated Computer controlled system for vending personalized products
US5036472A (en) 1988-12-08 1991-07-30 Hallmark Cards, Inc. Computer controlled machine for vending personalized products or the like
GB9002477D0 (en) * 1990-02-05 1990-04-04 Crosfield Electronics Ltd Improvements relating to control data arrays
IL95424A0 (en) * 1990-02-09 1991-06-30 Hallmark Cards Color printing system usable for reproduction of computer-generated images
JPH03287196A (en) * 1990-04-02 1991-12-17 Toshiba Corp Hue correcting device
US5546316A (en) 1990-10-22 1996-08-13 Hallmark Cards, Incorporated Computer controlled system for vending personalized products
US5559714A (en) 1990-10-22 1996-09-24 Hallmark Cards, Incorporated Method and apparatus for display sequencing personalized social occasion products
US5418575A (en) * 1991-12-11 1995-05-23 Hitachi, Ltd. Color display apparatus having compensating unit
US5530793A (en) * 1993-09-24 1996-06-25 Eastman Kodak Company System for custom imprinting a variety of articles with images obtained from a variety of different sources
US5726898A (en) 1994-09-01 1998-03-10 American Greetings Corporation Method and apparatus for storing and selectively retrieving and delivering product data based on embedded expert judgements
JPH08186727A (en) * 1994-12-28 1996-07-16 Canon Inc Device and method for processing picture
US5790261A (en) * 1995-05-25 1998-08-04 Mita Industrial Co., Ltd. Color correction device to correct errors in input and output portions of an image developing device and method thereof
US5768142A (en) 1995-05-31 1998-06-16 American Greetings Corporation Method and apparatus for storing and selectively retrieving product data based on embedded expert suitability ratings
US5875110A (en) 1995-06-07 1999-02-23 American Greetings Corporation Method and system for vending products
JP3724038B2 (en) * 1996-02-20 2005-12-07 ソニー株式会社 Color signal adjusting device and camera device
JP4676872B2 (en) 2005-12-20 2011-04-27 富士通セミコンダクター株式会社 Color difference space region determination method and determination apparatus
JP4389977B2 (en) 2007-06-29 2009-12-24 ブラザー工業株式会社 Image printing apparatus, image printing method, and image printing program

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005323376A (en) * 2004-05-06 2005-11-17 Samsung Electronics Co Ltd Apparatus and method for adjusting primary color component of image, and computer-readable recording medium for recording program therefor
JP2007194805A (en) * 2006-01-18 2007-08-02 Sony Corp Color transformation device and method, recording medium, and program
JP2007282131A (en) * 2006-04-11 2007-10-25 Sony Corp Imaging apparatus, video signal processing circuit, video signal processing method, and computer program
JP2012175448A (en) * 2011-02-22 2012-09-10 Fuji Xerox Co Ltd Color processing device and color processing program

Also Published As

Publication number Publication date
GB2208460A (en) 1989-03-30
GB8817309D0 (en) 1988-08-24

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