CA1202409A - Key signal generating apparatus for digital chromakey system - Google Patents

Key signal generating apparatus for digital chromakey system

Info

Publication number
CA1202409A
CA1202409A CA000410989A CA410989A CA1202409A CA 1202409 A CA1202409 A CA 1202409A CA 000410989 A CA000410989 A CA 000410989A CA 410989 A CA410989 A CA 410989A CA 1202409 A CA1202409 A CA 1202409A
Authority
CA
Canada
Prior art keywords
signal
output
data
theta
key
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
CA000410989A
Other languages
English (en)
French (fr)
Inventor
Kaichi Yamamoto
Jun Yonemitsu
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
Application granted granted Critical
Publication of CA1202409A publication Critical patent/CA1202409A/en
Expired 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)
  • Formation And Processing Of Food Products (AREA)
  • Soil Working Implements (AREA)
  • Confectionery (AREA)
CA000410989A 1981-09-12 1982-09-08 Key signal generating apparatus for digital chromakey system Expired CA1202409A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP144535/81 1981-09-12
JP56144535A JPS5846783A (ja) 1981-09-12 1981-09-12 クロマキ−装置

Publications (1)

Publication Number Publication Date
CA1202409A true CA1202409A (en) 1986-03-25

Family

ID=15364566

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000410989A Expired CA1202409A (en) 1981-09-12 1982-09-08 Key signal generating apparatus for digital chromakey system

Country Status (7)

Country Link
US (1) US4533937A (OSRAM)
EP (1) EP0074824B1 (OSRAM)
JP (1) JPS5846783A (OSRAM)
AT (1) ATE31856T1 (OSRAM)
AU (1) AU560044B2 (OSRAM)
CA (1) CA1202409A (OSRAM)
DE (1) DE3277959D1 (OSRAM)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591897A (en) * 1984-03-08 1986-05-27 Edelson Steven D System for generating a display of graphic objects over a video camera picture
JPS60194696A (ja) * 1984-03-15 1985-10-03 Toshiba Corp デイジタルクロマキ−装置
GB2158320A (en) * 1984-04-26 1985-11-06 Philips Electronic Associated Generating a chroma keying signal
EP0424995B1 (en) * 1985-04-12 1996-03-20 Ampex Systems Corporation A recirculating special effects video framestore
JPS626212A (ja) * 1985-07-02 1987-01-13 Olympus Optical Co Ltd 内視鏡装置
US4698666A (en) * 1985-07-12 1987-10-06 The Grass Valley Group, Inc. Video key glow and border generator
JPS6266791A (ja) * 1985-09-16 1987-03-26 ザ・グラス・バレ−・グル−プ・インコ−ポレイテツド クロマキ−装置
US4800432A (en) * 1986-10-24 1989-01-24 The Grass Valley Group, Inc. Video Difference key generator
US5003491A (en) * 1988-03-10 1991-03-26 The Boeing Company Multiplying video mixer system
FR2652972B1 (fr) * 1989-10-06 1996-11-29 Thomson Video Equip Procede et dispositif d'incrustation d'images video couleur auto-adaptatif.
GB8928058D0 (en) * 1989-12-12 1990-02-14 Crosfield Electronics Ltd Digital image generation
GB2243743A (en) * 1990-04-11 1991-11-06 Rank Cintel Ltd Digital colour video key signal generator using two programmable lookup tables
AU628731B2 (en) * 1990-04-11 1992-09-17 Rank Cintel Limited Improved keying methods for digital video
DE4017878A1 (de) * 1990-06-02 1991-12-05 Broadcast Television Syst Verfahren und anordnung zur ableitung eines stanzsignals
GB9109999D0 (en) * 1991-05-09 1991-07-03 Quantel Ltd Improvements in or relating to keying systems and methods for television image processing
JP2550972Y2 (ja) * 1991-08-23 1997-10-15 ダイワ精工株式会社 魚釣用リールのハンドル
US5249039A (en) * 1991-11-18 1993-09-28 The Grass Valley Group, Inc. Chroma key method and apparatus
DE4142650B4 (de) * 1991-12-21 2006-03-16 Bts Holding International Bv Verfahren und Anordnung zur Ableitung eines Steuersignals für die Einblendung eines Hintergrundsignals in Teile eines Vordergrundsignals
US5699442A (en) * 1992-04-10 1997-12-16 Andrew Welch System for detecting the location of a reflective object within a video field
DE4229377B4 (de) * 1992-09-03 2006-03-23 Bts Holding International Bv Farbstanzverfahren für Bildsignale
JPH06225329A (ja) * 1993-01-22 1994-08-12 Imagica:Kk クロマキー処理方法及び装置
DE4303348B4 (de) * 1993-02-05 2006-03-30 Bts Holding International Bv Verfahren zur Abtrennung eines Vordergrund-Bildsignals aus einem Misch-Bildsignal sowie Anordnung zur Durchführung des Verfahrens
GB2282293B (en) * 1993-09-10 1997-08-27 Sony Uk Ltd A method of and apparatus for deriving a key signal from a digital video signal
IL109487A (en) 1994-04-29 1996-09-12 Orad Hi Tec Systems Ltd Chromakeying system
GB9601101D0 (en) 1995-09-08 1996-03-20 Orad Hi Tech Systems Limited Method and apparatus for automatic electronic replacement of billboards in a video image
GB2305050A (en) * 1995-09-08 1997-03-26 Orad Hi Tec Systems Ltd Determining the position of a television camera for use in a virtual studio employing chroma keying
FR2741770B1 (fr) * 1995-11-23 1998-01-02 Thomson Broadcast Systems Procede de calcul d'une cle de decoupe d'un sujet evoluant devant un fond colore et dispositif mettant en oeuvre ce procede
FR2741769B1 (fr) * 1995-11-23 1997-12-19 Thomson Broadcast Systems Procede de traitement du signal constitue par un sujet evoluant devant un fond colore et dispositif mettant en oeuvre ce procede
US5986771A (en) * 1997-09-19 1999-11-16 Eastman Kodak Company Method for computing a control signal for combining digital images
US6011595A (en) * 1997-09-19 2000-01-04 Eastman Kodak Company Method for segmenting a digital image into a foreground region and a key color region
JP3642258B2 (ja) * 2000-05-08 2005-04-27 松下電器産業株式会社 映像合成装置
US6795068B1 (en) * 2000-07-21 2004-09-21 Sony Computer Entertainment Inc. Prop input device and method for mapping an object from a two-dimensional camera image to a three-dimensional space for controlling action in a game program
US6829015B2 (en) * 2001-01-19 2004-12-07 Samsung Electronics Co., Ltd. Device and method for realizing transparency in an on screen display
JP3581835B2 (ja) 2001-03-14 2004-10-27 株式会社イマジカ クロマキー処理における色変換方法及び装置
DE10204500A1 (de) * 2002-02-03 2003-08-14 Fraunhofer Ges Forschung Echtzeitfähiges Erkennungs- und Kompensationsverfahren von Beleuchtungsschwankungen in digitalen Farbbildsignalen
US8133115B2 (en) 2003-10-22 2012-03-13 Sony Computer Entertainment America Llc System and method for recording and displaying a graphical path in a video game
US7508455B2 (en) * 2004-03-26 2009-03-24 Ross Video/Live Production Technology Method, system, and device for automatic determination of nominal backing color and a range thereof
US20060071933A1 (en) 2004-10-06 2006-04-06 Sony Computer Entertainment Inc. Application binary interface for multi-pass shaders
US7636126B2 (en) 2005-06-22 2009-12-22 Sony Computer Entertainment Inc. Delay matching in audio/video systems
US7965859B2 (en) 2006-05-04 2011-06-21 Sony Computer Entertainment Inc. Lighting control of a user environment via a display device
US7880746B2 (en) 2006-05-04 2011-02-01 Sony Computer Entertainment Inc. Bandwidth management through lighting control of a user environment via a display device
US10786736B2 (en) 2010-05-11 2020-09-29 Sony Interactive Entertainment LLC Placement of user information in a game space
US9342817B2 (en) 2011-07-07 2016-05-17 Sony Interactive Entertainment LLC Auto-creating groups for sharing photos
CN102752612B (zh) * 2011-11-21 2016-06-15 新奥特（北京）视频技术有限公司 一种基于色键选区进行图像校色的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678182A (en) * 1971-03-12 1972-07-18 Philips Broadcast Equip Chroma key circuit
FR2464001A1 (fr) * 1979-08-17 1981-02-27 Thomson Csf Generateur de signaux de commutation pour effet d'incrustation en television et dispositif de commande d'effets speciaux comportant un tel generateur
US4394680A (en) * 1980-04-01 1983-07-19 Matsushita Electric Industrial Co., Ltd. Color television signal processing apparatus
DE3027054A1 (de) * 1980-07-17 1982-02-11 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur ableitung eines digitalen steuersignals

Also Published As

Publication number Publication date
JPS5846783A (ja) 1983-03-18
JPH0458231B2 (OSRAM) 1992-09-16
ATE31856T1 (de) 1988-01-15
EP0074824B1 (en) 1988-01-07
EP0074824A2 (en) 1983-03-23
US4533937A (en) 1985-08-06
AU560044B2 (en) 1987-03-26
AU8806682A (en) 1983-03-24
EP0074824A3 (en) 1984-09-12
DE3277959D1 (en) 1988-02-11

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Legal Events

Date Code Title Description
MKEX Expiry