AU538370B2 - Process and circuit for the partial electronic correction in colour image reproduction - Google Patents

Process and circuit for the partial electronic correction in colour image reproduction

Info

Publication number
AU538370B2
AU538370B2 AU63351/80A AU6335180A AU538370B2 AU 538370 B2 AU538370 B2 AU 538370B2 AU 63351/80 A AU63351/80 A AU 63351/80A AU 6335180 A AU6335180 A AU 6335180A AU 538370 B2 AU538370 B2 AU 538370B2
Authority
AU
Australia
Prior art keywords
retouching
image
trichromatic
colour
point
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.)
Ceased
Application number
AU63351/80A
Other versions
AU6335180A (en
Inventor
J. Klie
Klaus Wellendorf
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 AU6335180A publication Critical patent/AU6335180A/en
Application granted granted Critical
Publication of AU538370B2 publication Critical patent/AU538370B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • H04N1/62—Retouching, i.e. modification of isolated colours only or in isolated picture areas only
    • H04N1/622—Retouching, i.e. modification of isolated colours only or in isolated picture areas only with simulation on a subsidiary picture reproducer

Abstract

In the method for improving the drawing in colour image reproduction by partial electronic retouching, the trichromatic sampling of a colour component of the colour image provides the trichromatic components which are subjected to an analog/digital conversion and stored in the memory (1). With a coordinate probe (50, 51, 52), a retoucher will proceed in the same way as with a retouching brush. By means of the probe, the coordinates of a moving area on the image (surface of the brush) of a trichromatic component to be retouched as well as the number of correction steps by image point will be searched. For the marked correction area the corrections will be calculated point by point. The trichromatic components of the coloured image or of a coloured printing will be read in the memory (1) and modified to obtain the retouching effect under the control of a monitor (2). The individual values of the corrections for each correction step may be freely selected. By previously determining the modifications so that they decrease from the center towards the edges of the image (for example according to the Gauss distribution), there will be provided in the retouching area a retouching degree which increases or decreases progressively.
AU63351/80A 1980-09-10 1980-09-10 Process and circuit for the partial electronic correction in colour image reproduction Ceased AU538370B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1980/000134 WO1982000903A1 (en) 1980-09-10 1980-09-10 Process and circuit for the partial electronic correction in colour image reproduction

Publications (2)

Publication Number Publication Date
AU6335180A AU6335180A (en) 1982-04-08
AU538370B2 true AU538370B2 (en) 1984-08-09

Family

ID=6711770

Family Applications (1)

Application Number Title Priority Date Filing Date
AU63351/80A Ceased AU538370B2 (en) 1980-09-10 1980-09-10 Process and circuit for the partial electronic correction in colour image reproduction

Country Status (8)

Country Link
EP (1) EP0060243B1 (en)
JP (1) JPH0423259B2 (en)
AT (1) ATE10309T1 (en)
AU (1) AU538370B2 (en)
BE (1) BE890304A (en)
DE (2) DE3069639D1 (en)
IT (1) IT1139143B (en)
WO (1) WO1982000903A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU571623B2 (en) * 1983-12-24 1988-04-21 Dr.-Ing Rudolf Hell G.M.B.H. Simulating a multi-coloured reproduction on a colour monitor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211154A (en) * 1982-06-01 1983-12-08 Dainippon Screen Mfg Co Ltd Method and device for picture scanning and recording with retouching function
FR2530905B1 (en) * 1982-07-26 1986-07-04 Tigre IMAGE PROCESSING AND HANDLING METHOD AND CONSOLE FOR IMPLEMENTING THE METHOD
DE3341371C2 (en) * 1982-11-16 1989-09-21 Dainippon Ink And Chemicals, Inc., Tokio/Tokyo Method and device for generating a combined image signal
GB8611554D0 (en) * 1986-05-12 1986-06-18 Crosfield Electronics Ltd Image display
GB2226468B (en) * 1988-12-22 1993-08-11 Rank Cintel Ltd Image processing system
JPH07104597B2 (en) * 1990-09-18 1995-11-13 大日本スクリーン製造株式会社 Image processing device
DE4232704C2 (en) * 1992-09-30 1995-04-20 Hell Ag Linotype Method and circuit arrangement for the electronic retouching of images
DE19646821A1 (en) * 1996-11-13 1998-05-14 Axel Prof Ritz Image data detection unit for colour printer, video device and digital camera

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400806A (en) * 1972-12-04 1975-07-23 Crosfield Electronics Ltd Image reproduction systems
US3848856A (en) * 1973-10-01 1974-11-19 Hazeltine Corp Local correction apparatus for a color previewer
JPS5224701A (en) * 1975-08-20 1977-02-24 Dainippon Screen Mfg Method of correcting color of image signal
JPS5371901A (en) * 1976-12-09 1978-06-26 Toppan Printing Co Ltd Device for amending partialy for use in device for instituting condition of proofreading
DE2725864C2 (en) * 1977-06-08 1982-07-01 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Color correction unit for printing form production
DE2810430C3 (en) * 1978-03-10 1981-04-30 2300 Kiel Dr.-Ing. Rudolf Hell Gmbh Method and circuit for selectively correcting the colors of an image to be reproduced
DE2848376C2 (en) * 1978-11-08 1983-12-15 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Device for post-correction of standard color corrections in color image recording
DE2920058C2 (en) * 1979-05-18 1983-09-29 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Method and circuit arrangement for partial electronic retouching in color image reproduction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU571623B2 (en) * 1983-12-24 1988-04-21 Dr.-Ing Rudolf Hell G.M.B.H. Simulating a multi-coloured reproduction on a colour monitor

Also Published As

Publication number Publication date
WO1982000903A1 (en) 1982-03-18
JPS57501402A (en) 1982-08-05
EP0060243A1 (en) 1982-09-22
JPH0423259B2 (en) 1992-04-21
DE3110471A1 (en) 1982-04-08
DE3110471C2 (en) 1984-03-01
IT1139143B (en) 1986-09-17
BE890304A (en) 1982-01-04
EP0060243B1 (en) 1984-11-14
IT8123791A0 (en) 1981-09-04
AU6335180A (en) 1982-04-08
DE3069639D1 (en) 1984-12-20
ATE10309T1 (en) 1984-11-15

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