JPS5746590A - Color video synthesizing device - Google Patents

Color video synthesizing device

Info

Publication number
JPS5746590A
JPS5746590A JP12269780A JP12269780A JPS5746590A JP S5746590 A JPS5746590 A JP S5746590A JP 12269780 A JP12269780 A JP 12269780A JP 12269780 A JP12269780 A JP 12269780A JP S5746590 A JPS5746590 A JP S5746590A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
signal
memory
circuit
output
records
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
JP12269780A
Inventor
Masao Ueda
Original Assignee
Shin Meiwa Ind 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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/272Means for inserting a foreground image in a background image, i.e. inlay, outlay
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/64Circuits for processing colour signals
    • H04N9/74Circuits for processing colour signals for obtaining special effects
    • H04N9/75Chroma key
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/272Means for inserting a foreground image in a background image, i.e. inlay, outlay
    • H04N2005/2726Means for inserting a foreground image in a background image, i.e. inlay, outlay for simulating a person's appearance, e.g. hair style, glasses, clothes

Abstract

PURPOSE:To take out a Shiroma-key signal (a kind of chroma-key about background) from a luminance signal, and to obtain a correct composite signal, by constituting a composing circuit including an average value output means which obtains an average value of the luminance signal of two frames. CONSTITUTION:An A/D converter 3 digitizes the video signal, which is the output of a VTR1, by the timing signal of a timing oscillating circuit 6 and not only records the signal of one-frame components in a memory 4 but also records the signal of next one-frame components in a memory 5. When both video signals are recorded in memories 4 and 5, an adding circuit 7 adds both video signals, and the addition output is reduced to 1/2 by a 1/2 circuit 8 and is recorded in the memory 4. Next, the A/D converter 3 digitizes the output of a image pickup machine 2 and records one-frame components in the memory 5. Meanwhile, a Shiroma-key signal is detected from the video signal of the memory 4 by the circuit 7 and is inputted to a synthesizing circuit 10 together with video signals of memories 4 and 5, thus synthesizing videos.
JP12269780A 1980-09-03 1980-09-03 Color video synthesizing device Pending JPS5746590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12269780A JPS5746590A (en) 1980-09-03 1980-09-03 Color video synthesizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12269780A JPS5746590A (en) 1980-09-03 1980-09-03 Color video synthesizing device

Publications (1)

Publication Number Publication Date
JPS5746590A true true JPS5746590A (en) 1982-03-17

Family

ID=14842367

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12269780A Pending JPS5746590A (en) 1980-09-03 1980-09-03 Color video synthesizing device

Country Status (1)

Country Link
JP (1) JPS5746590A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4872056A (en) * 1987-02-05 1989-10-03 Video Graphic Styling, Inc. Method for displaying selected hairstyles in video form
EP0543563A2 (en) * 1991-11-18 1993-05-26 The Grass Valley Group, Inc. Chroma key method and apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454532A (en) * 1977-10-11 1979-04-28 Ricoh Co Ltd Cathode ray tube character display system
JPS54140828A (en) * 1978-04-24 1979-11-01 Nippon Hoso Kyokai <Nhk> Luminance-color separation system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454532A (en) * 1977-10-11 1979-04-28 Ricoh Co Ltd Cathode ray tube character display system
JPS54140828A (en) * 1978-04-24 1979-11-01 Nippon Hoso Kyokai <Nhk> Luminance-color separation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4872056A (en) * 1987-02-05 1989-10-03 Video Graphic Styling, Inc. Method for displaying selected hairstyles in video form
EP0543563A2 (en) * 1991-11-18 1993-05-26 The Grass Valley Group, Inc. Chroma key method and apparatus

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