GB1251217A - - Google Patents

Info

Publication number
GB1251217A
GB1251217A GB5403868A GB1251217DA GB1251217A GB 1251217 A GB1251217 A GB 1251217A GB 5403868 A GB5403868 A GB 5403868A GB 1251217D A GB1251217D A GB 1251217DA GB 1251217 A GB1251217 A GB 1251217A
Authority
GB
United Kingdom
Prior art keywords
catchlight
signal
slope
correction circuit
signals
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.)
Expired
Application number
GB5403868A
Other languages
English (en)
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 filed Critical
Publication of GB1251217A publication Critical patent/GB1251217A/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
    • H04N1/6027—Correction or control of colour gradation or colour contrast

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Image Communication Systems (AREA)
GB5403868A 1968-11-14 1968-11-14 Expired GB1251217A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5403868 1968-11-14

Publications (1)

Publication Number Publication Date
GB1251217A true GB1251217A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-10-27

Family

ID=10469738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5403868A Expired GB1251217A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1968-11-14 1968-11-14

Country Status (3)

Country Link
US (1) US3634611A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1957418C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1251217A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831887A (en) * 1973-06-28 1974-08-27 Rockwell International Corp Aircraft control methods
JPH0724425B2 (ja) * 1986-09-02 1995-03-15 富士写真フイルム株式会社 画像処理方法及び装置
US5018085A (en) * 1988-06-16 1991-05-21 Hallmark Cards, Inc. Color printing system usable for reproduction of computer-generated images
US5060061A (en) * 1989-06-30 1991-10-22 Victor Company Of Japan, Ltd. Method of reading an image recorded in a photographic film tone characteristic correcting method in reproducing an image recorded in a photographic film

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766319A (en) * 1952-09-16 1956-10-09 Time Inc Method of and apparatus for making a black printer for four-color reproduction
BE532483A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1953-10-14
NL217379A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1955-06-15
US2981792A (en) * 1957-10-31 1961-04-25 Fairchild Camera Instr Co Color correction computer for engraving machines

Also Published As

Publication number Publication date
US3634611A (en) 1972-01-11
DE1957418A1 (de) 1970-06-11
DE1957418C3 (de) 1979-05-17
DE1957418B2 (de) 1978-09-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years