[go: up one dir, main page]

GB2016238A - Facsimile reproduction of coloured pictures - Google Patents

Facsimile reproduction of coloured pictures

Info

Publication number
GB2016238A
GB2016238A GB7908486A GB7908486A GB2016238A GB 2016238 A GB2016238 A GB 2016238A GB 7908486 A GB7908486 A GB 7908486A GB 7908486 A GB7908486 A GB 7908486A GB 2016238 A GB2016238 A GB 2016238A
Authority
GB
United Kingdom
Prior art keywords
scanned
colour
picture
signals
separations
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
GB7908486A
Other versions
GB2016238B (en
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.)
Dr Ing Rudolf Hell GmbH
Original Assignee
Dr Ing Rudolf Hell GmbH
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 Dr Ing Rudolf Hell GmbH filed Critical Dr Ing Rudolf Hell GmbH
Publication of GB2016238A publication Critical patent/GB2016238A/en
Application granted granted Critical
Publication of GB2016238B publication Critical patent/GB2016238B/en
Expired 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
    • H04N1/6016—Conversion to subtractive colour signals
    • H04N1/6022—Generating a fourth subtractive colour signal, e.g. under colour removal, black masking
    • H04N1/6025—Generating a fourth subtractive colour signal, e.g. under colour removal, black masking using look-up tables

Landscapes

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

Abstract

Production of colour correction data to load an addressable colour correction store 26 which, in response to a plurality of different scanned signals acting as input values emits a corresponding number of corrected picture- reproducing signals as output values, where, starting from an original picture, corrected colour separations are produced using any desired colour correction process. The original 2 and the colour separations (ye, mg, cy, bl) are each scanned separately by optoelectrical means 1,3 and the scanned picture signals obtained are digitised and the combinations of scanned picture signals (R, G, B) and the values scanned from the colour separations are correlated with one another in the sequence with which they were scanned. <IMAGE>
GB7908486A 1978-03-09 1979-03-09 Facsimile reproduction of coloured pictures Expired GB2016238B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2810225A DE2810225C2 (en) 1978-03-09 1978-03-09 Acquisition and utilization of color correction data for color image recording

Publications (2)

Publication Number Publication Date
GB2016238A true GB2016238A (en) 1979-09-19
GB2016238B GB2016238B (en) 1982-07-14

Family

ID=6033985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7908486A Expired GB2016238B (en) 1978-03-09 1979-03-09 Facsimile reproduction of coloured pictures

Country Status (7)

Country Link
JP (1) JPS54127701A (en)
CH (1) CH640956A5 (en)
DE (1) DE2810225C2 (en)
FR (1) FR2419534B1 (en)
GB (1) GB2016238B (en)
IL (1) IL56771A (en)
NL (1) NL183060C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4482917A (en) * 1981-03-11 1984-11-13 Dr. Ing. Rudolf Hell Gmbh Method for a reproduction of colored masters in four-color printing using color reduction
EP0124908A2 (en) * 1983-05-10 1984-11-14 Toppan Printing Co., Ltd. Method of obtaining half-tone dot percents necessary for reproducing colors
EP0228824A1 (en) 1985-12-19 1987-07-15 Crosfield Electronics Limited Image reproduction
US4888636A (en) * 1983-03-08 1989-12-19 Canon Kabushiki Kaisha Image reproducing system
US5191361A (en) * 1983-03-08 1993-03-02 Canon Kabushiki Kaisha Image reproducing system
EP0766844A1 (en) * 1994-06-24 1997-04-09 Live Picture, Inc. Method for performing a color space transformation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5694228A (en) * 1979-12-28 1981-07-30 Dainippon Screen Mfg Co Ltd Color separation simulation device
FR2507037B1 (en) * 1981-06-01 1989-06-09 Canon Kk COLOR IMAGE READING APPARATUS
US4533928A (en) * 1982-04-30 1985-08-06 Canon Kabushiki Kaisha Color image processing apparatus
JPS5952968A (en) * 1982-09-20 1984-03-27 Sony Corp Device for printing colored document and picture
DE3629195A1 (en) * 1986-01-14 1987-07-23 Canon Kk COLOR IMAGE PROCESSING DEVICE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1597771C3 (en) * 1967-07-22 1978-09-07 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Process for the production of corrected color separation signals and color separations
US3612753A (en) * 1969-04-23 1971-10-12 Ventures Res & Dev Self-adaptive system for the reproduction of color
US3893166A (en) * 1972-01-05 1975-07-01 Crosfield Electronics Ltd Colour correcting image reproducing methods and apparatus
GB1369702A (en) * 1972-01-05 1974-10-09 Crosfield Electronics Ltd Image reproducing methods and apparatus
JPS5224701A (en) * 1975-08-20 1977-02-24 Dainippon Screen Mfg Method of correcting color of image signal
DE2621008B2 (en) * 1976-05-12 1978-10-26 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Process for obtaining and utilizing color correction data for color image recording

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4482917A (en) * 1981-03-11 1984-11-13 Dr. Ing. Rudolf Hell Gmbh Method for a reproduction of colored masters in four-color printing using color reduction
US5191361A (en) * 1983-03-08 1993-03-02 Canon Kabushiki Kaisha Image reproducing system
US5343233A (en) * 1983-03-08 1994-08-30 Canon Kabushiki Kaisha Image reproducing system having means for generating a pattern signal including a plurality of memories
US4888636A (en) * 1983-03-08 1989-12-19 Canon Kabushiki Kaisha Image reproducing system
EP0124908A2 (en) * 1983-05-10 1984-11-14 Toppan Printing Co., Ltd. Method of obtaining half-tone dot percents necessary for reproducing colors
EP0124908A3 (en) * 1983-05-10 1986-11-26 Toppan Printing Co., Ltd. Method of obtaining half-tone dot percents necessary for reproducing colors
EP0228824A1 (en) 1985-12-19 1987-07-15 Crosfield Electronics Limited Image reproduction
US4751569A (en) * 1985-12-19 1988-06-14 Crosfield Electronics Limited Recording beam control for color image reproduction
EP0766844A1 (en) * 1994-06-24 1997-04-09 Live Picture, Inc. Method for performing a color space transformation
EP0766844A4 (en) * 1994-06-24 1997-06-04 Live Picture Inc Method for performing a color space transformation
US6301025B1 (en) 1994-06-24 2001-10-09 Mgi Software Corporation Method for performing a color space transformation
US6621604B2 (en) 1994-06-24 2003-09-16 Roxio, Inc. Method for performing a color space transformation
USRE40637E1 (en) * 1994-06-24 2009-02-17 Kwok, Chu & Schindler Llc Method for performing a color space transformation
USRE41527E1 (en) 1994-06-24 2010-08-17 Bruno Delean Method for performing a color space transformation

Also Published As

Publication number Publication date
NL183060C (en) 1988-07-01
NL7901915A (en) 1979-09-11
JPS54127701A (en) 1979-10-03
FR2419534A1 (en) 1979-10-05
CH640956A5 (en) 1984-01-31
GB2016238B (en) 1982-07-14
NL183060B (en) 1988-02-01
DE2810225A1 (en) 1979-09-13
DE2810225C2 (en) 1982-04-22
FR2419534B1 (en) 1987-02-20
IL56771A (en) 1982-12-31
IL56771A0 (en) 1979-05-31

Similar Documents

Publication Publication Date Title
US2790844A (en) Color correction selector
JP3219403B2 (en) Image storage device
GB1536220A (en) Method of colour correction
GB2016238A (en) Facsimile reproduction of coloured pictures
CA2210244A1 (en) Inter-separation color image processing using error diffusion
JPH09130539A (en) Method for performing color scanning, and digital color scanning system
GB578092A (en) Colour television system
EP0266173A3 (en) Colour image processing apparatus
DE69131783T2 (en) Color image processing device and system for two input signals
JPS55117147A (en) Television image engraving apparatus
CN1157930C (en) Color image scanning device
JPS5651158A (en) Reproducing method of binary picture
CA1027231A (en) Multi aperture scanning and printing for facsimile line skipping
GB1335980A (en) High-speed colour correcting scanner for making colour printing plates
JPS55142346A (en) Plate making machine for printing of television image
JPS5418759A (en) Optical scanner
JPS617774A (en) Color picture output device
JPS5294017A (en) Scanner for facsimile
JPS6339144B2 (en)
JPS59189775A (en) Method and device for reading color picture
JPS5368908A (en) Facsimile receiving system
JPS6486173A (en) Color image forming device
JPS5661041A (en) Picking up method of sound from picture
JPS53102619A (en) Facsimile transmission system
JPS5310925A (en) Color solid image pickup unit

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee