JPH0347632B2 - - Google Patents

Info

Publication number
JPH0347632B2
JPH0347632B2 JP56211119A JP21111981A JPH0347632B2 JP H0347632 B2 JPH0347632 B2 JP H0347632B2 JP 56211119 A JP56211119 A JP 56211119A JP 21111981 A JP21111981 A JP 21111981A JP H0347632 B2 JPH0347632 B2 JP H0347632B2
Authority
JP
Japan
Prior art keywords
signal
shadow
foreground
video signal
chromakey
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 - Lifetime
Application number
JP56211119A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58117787A (ja
Inventor
Yoshikazu Yamamoto
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP21111981A priority Critical patent/JPS58117787A/ja
Publication of JPS58117787A publication Critical patent/JPS58117787A/ja
Publication of JPH0347632B2 publication Critical patent/JPH0347632B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/74—Circuits for processing colour signals for obtaining special effects
    • H04N9/75—Chroma key

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
JP21111981A 1981-12-30 1981-12-30 クロマキ−装置 Granted JPS58117787A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21111981A JPS58117787A (ja) 1981-12-30 1981-12-30 クロマキ−装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21111981A JPS58117787A (ja) 1981-12-30 1981-12-30 クロマキ−装置

Publications (2)

Publication Number Publication Date
JPS58117787A JPS58117787A (ja) 1983-07-13
JPH0347632B2 true JPH0347632B2 (cs) 1991-07-19

Family

ID=16600711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21111981A Granted JPS58117787A (ja) 1981-12-30 1981-12-30 クロマキ−装置

Country Status (1)

Country Link
JP (1) JPS58117787A (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908699A (en) * 1989-01-23 1990-03-13 The Grass Valley Group, Inc. Component video accumulation effect
US5202762A (en) * 1991-09-10 1993-04-13 Ultimatte Corporation Method and apparatus for applying correction to a signal used to modulate a background video signal to be combined with a foreground video signal
US5327177A (en) * 1992-05-26 1994-07-05 The Grass Valley Group, Inc. Method of and apparatus for processing a shaped video signal to add a simulated shadow

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041527A (en) * 1976-03-15 1977-08-09 The Grass Valley Group, Inc. Video effects generator
JPS5451717A (en) * 1977-09-30 1979-04-23 Fujitsu General Ltd Soft chromakey system
JPS55154888A (en) * 1979-05-23 1980-12-02 Nec Corp Preventing unit for color shadow chroma-key effect
JPS5661874A (en) * 1979-10-23 1981-05-27 Matsushita Electric Ind Co Ltd Chroma-key signal generating device

Also Published As

Publication number Publication date
JPS58117787A (ja) 1983-07-13

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