| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | 카메라 시스템에서 칼러 키잉 수행장치 | KR1019990032586 | 1999-08-09 | KR1020010017200A | 2001-03-05 | 진시영 |
| PURPOSE: A color keying device for a camera system is provided so that a color keying effect can be remarkably improved by deciding a color keying region of R-Y/B-Y chart in a fan shape from an origin. CONSTITUTION: A color keying device for a camera system consists of a first chrominance signal dividing unit(40), a color keying control unit(90) and an output unit(80). The color keying control unit(90) includes a chrominance signal combining unit(50) and a chrominance signal comparing unit(60). In addition, the chrominance signal combining unit(50) consists of a first selecting unit(56), a multiplying unit(52) and a second chrominance signal dividing unit(54). Here, the chrominance signal comparing unit(60) consists of first and second comparing units(92,94), second and third selecting units(70,72), and a first AND gate(84). The signal output unit(80) includes an output control unit(82) and a second AND gate(84). The output control unit(82) may be embodied as an exclusive OR gate. In order to perform the color keying effect, a color keying region of R-Y/B-Y chart is determined in a fan shape from an origin. Accordingly, the color keying effect is completely achieved by considering a chrominance signal of a low level near the origin. | ||||||
| 42 | ADJUSTIVE CHROMA KEY COMPOSITION APPARATUS AND METHOD | PCT/KR2006/005585 | 2006-12-20 | WO2007097517A1 | 2007-08-30 | KEUM, Dong-Kyo; JEONG, Youn-ki; AHN, Nako |
An adjustive chroma key composition apparatus comprising: an image input means that receives a photographed image and a background screen substitution image; a pre-processing means that scans the received images, space-divides the overall screen for each frame, generates a separate chroma key value for each of space division planes, traces change of the chroma key value, and generates a background screen chroma key based on the traced change of the chroma key value; a chroma keying processing means that processes chroma keying based on the chroma key, and substitutes pixels, which correspond to the background screen chroma key, with the background screen substitution image in the received image including an object image; a post-processing means that minimizes a common color region (intersection) of the background screen image and the object image by applying a luminance component in addition to a chroma component when the chroma keying is processed; and an image output means that outputs a composition of the object image and the background screen substitution image. |
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| 43 | BROADCAST ENHANCEMENT SYSTEM AND METHOD | PCT/EP2000/012527 | 2000-12-11 | WO01047255A1 | 2001-06-28 | |
| A broadcast enhancement system and method for enhancing a received television broadcast signal using a received enhancement signal, at least one of which is prepared for chroma keying. The system is configured to intercept the television broadcast signal before it is passed to the television and to apply chroma keying to superimpose the enhancement signal to the television broadcast signal before passing the superimposed signal to the television. | ||||||
| 44 | RGB信號之合成影像信號轉換裝置及其影像重疊之應用 | TW078109299 | 1989-12-01 | TW141153B | 1990-09-01 | 柏迪分; 莫麥克; 湯羅倫; 葛保羅 |
| 一種將ＲＧＢ信號轉換為合成視頻信號之裝置，該裝置對於視頻重疊之應用特別具有用處。本發明分別於視頻電路和鍵控電路使用陷波濾波器，其陷波中心頻率等於該ＲＧＢ信號之點脈時頻率被若干整數所除，而其商數則落於色度副載波頻譜之內。 | ||||||
| 45 | Chromakey apparatus | EP82304786 | 1982-09-10 | EP0074824A3 | 1984-09-12 | Yamamoto, Kaichi; Yonemitsu, Jun |
A key signal generating apparatus in digital chromakey system is adapted to generate a key signal in accordance with the distance between a reference hue corresponding to a back color data and a hue of an input video data in U-V chroma signal coordinates, the gain of the key signal being determined by quadratic curve groups in U-V chroma signal coordinates. The particular quadratic relationship used is user-selectable. |
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| 46 | 컬러 QR코드를 생성하고 인식하는 방법 및 시스템 | KR1020150137872 | 2015-09-30 | KR1020170038468A | 2017-04-07 | 권태호; 방민석; 김기두; 김지원 |
| 본발명은원본데이터가 CSK(Color shift keying) 표준의심벌(Symbol), 또는 CIE 색도도상에설정된심벌로매핑(mapping)된컬러 QR코드와, 그것을생성하고인식하는방법및 시스템에관한것으로, 컬러 QR코드로변환될원본데이터를입력받는입력부와, 원본데이터를대응하는 CSK 표준의심벌또는 CIE 색도도상에설정된심벌로변환하여 QR코드형태의데이터코드를생성하는인코딩부를포함한다. | ||||||
| 47 | APPARATUS AND METHOD FOR CHROMA-KEY PROCESSING | PCT/IL2009001047 | 2009-11-05 | WO2010052716A2 | 2010-05-14 | CARMI SHACHAR |
| Apparatus for interpolating or dispersing effects over a video frame, useful for chroma keying of an image comprising a foreground including a part to remove, such as a background or spill from the background. The apparatus handles pixels of the image one by one and includes an interpolation unit for applying an interpolation of attributes at a respective pixel and then applies a function based on the attributes. For example in chroma keying an opaqueness assigner may compare the local color with a color of the part to remove using the interpolation. Based on the comparison, keying is used to set at the respective pixel a level of opaqueness for the pixel. | ||||||
| 48 | MODIFIED CHROMA KEYED TECHNIQUE FOR SIMPLE SHAPE CODING FOR DIGITAL VIDEO | PCT/US1999/018310 | 1999-08-23 | WO00016562A1 | 2000-03-23 | |
| An efficient chroma key-based coding technique for digital video with an optimized switching threshold. An optimized binary keying threshold (T) is provided for switching between a first image region (such as a background region) (B) and second image region (such as a foreground object) (A) video picture. The threshold optimizes a PSNR of a quantization error Q of a key color K. A chroma key technique is also provided for representing the shape of a video object, where the shape information (alpha plane) of a foreground object is embedded in the keyed output, so there is no need to carry an explicit alpha plane, or use alpha plane coding. The chroma key shape representation technique provides a smooth transition at the boundary (500, 505) between objects without the need for special switching patterns, such as a general gray scale shape coding tool, or post-processing, e.g., using feathering filters. | ||||||
| 49 | METHOD FOR GENERATING AND PROCESSING TRANSITION STREAMS | PCT/US0010208 | 2000-04-14 | WO0062552A3 | 2001-02-01 | WARD CHRISTOPHER; HURST ROBERT NORMAN |
| A method for generating a transition stream and processing video, audio or other data within the transition stream using, respectively, pixel domain processing, such as morphing, fading, wiping, dissolving, pushing, revealing, black-framing, freeze-framing and chroma-keying, audio domain processing or other data domain processing. | ||||||
| 50 | APPARATUS AND METHOD FOR CHROMA-KEY PROCESSING | EP09775319.8 | 2009-11-05 | EP2353297A2 | 2011-08-10 | Carmi, Shachar |
| Apparatus for interpolating or dispersing effects over a video frame, useful for chroma keying of an image comprising a foreground including a part to remove, such as a background or spill from the background. The apparatus handles pixels of the image one by one and includes an interpolation unit for applying an interpolation of attributes at a respective pixel and then applies a function based on the attributes. For example in chroma keying an opaqueness assigner may compare the local color with a color of the part to remove using the interpolation. Based on the comparison, keying is used to set at the respective pixel a level of opaqueness for the pixel. | ||||||
| 51 | Display device | JP2009154727 | 2009-06-30 | JP2011014972A | 2011-01-20 | FUKAYA TAKASHI; INOUE SEIKI; YAMAUCHI YUIKO; OKUBO HIDEHIKO; MITSUMINE HIDEKI; TANAKA RYOZO |
| PROBLEM TO BE SOLVED: To provide a display device for displaying positional information on the height of a virtual object and operation information on the movement of the virtual object so that a performer visually recognizes it when composite video images are produced.SOLUTION: The display device 100 displays object positional information visually recognized by the performer when composite video images are produced using chroma keying. The display device 100 includes a cylindrical body 1 in which a plurality of light sources indicating the object positional information are arranged therein, a support 2 for supporting the cylindrical body 1, and a control part 3 for controlling on/off of the light sources. The outer faces of the cylindrical body 1 and the support 2 have the same color as chroma keying background. Then, the light sources 6 are turned on by light quantity to be detected as the same color as the chroma keying background, or turned on within a non-imaging period of an imaging camera, which does not affect the chroma keying. | ||||||
| 52 | GENERATING A CLEAN REFERENCE IMAGE | PCT/US2008/073755 | 2008-08-20 | WO2009026388A1 | 2009-02-26 | SCHAEM, Stephan |
A method and system providing a reference background image for a chroma keyer is disclosed. The color profile of the background, based on a color census, is obtained. Then all image areas that do not fit the said color profile are identified as foreground areas. Finally, to each identified foreground area, colors based on the background color profile are applied, in order to create a clean reference background scene. |
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| 53 | Method for distributing video clips produced using chroma key processing | US11524950 | 2006-09-22 | US20080077963A1 | 2008-03-27 | Navarre Joseph |
| A method for distributing a pre-edited, keyed video clip and matte produced using chroma key processing, the method comprising the steps of storing the keyed video clip and matte in an electronic repository and distributing the raw clip, keyed video clip, and matte in a lossless image compression format over the Internet. | ||||||
| 54 | Method and apparatus for performing chroma key, transparency and fog operations | US794749 | 1997-02-03 | US5990903A | 1999-11-23 | Walter E. Donovan |
| A method and apparatus for chroma keying filtered textures are provided. Chroma keying is performed which replaces the input texel color with a new color if the input texel color matches the chroma color. The chroma key circuitry keeps the input texel color and sets the alpha component to 1 if the input texel color does not match the chroma color. The chroma keyed texels are filtered using bilinear filtering. The color components of the filtered texels are fogged using a fog factor, a fog color, and the alpha component of the filtered texel. The fogged and filtered signal is blended with a background color to produce an output color for the texels. | ||||||
| 55 | Chroma processor including a look-up table or memory | US954366 | 1992-09-30 | US5313275A | 1994-05-17 | Richard T. Daly; Robert N. Stabler; Paul C. Post; Randy Wiggins |
| Video systems generally include chroma processors. The chroma processor may be configured as a chroma keyer, a key signal generator or a color collector. The chroma processor includes dual input look-up tables which are loaded by a central processor. The dual input look-up tables may be read and written to simultaneously. The look-up tables are addressed by chrominance signals, luminance signals or key signals input into the chroma processor. The look-up tables provide an exceptionally fast apparatus and exceptionally flexible method of keying one or more simultaneous regions of the display based on one or more unique chroma/luma combinations, new key signals, chrominance signals, and luminance signals. The chroma processor receives color modification parameters from a software user interface. Preferably, the chroma processor utilizes Y luminance signals, and U and V chrominance signals. | ||||||
| 56 | Keying system and composite image producing method | EP96117366.3 | 1996-10-29 | EP0772350A2 | 1997-05-07 | Mitsui, Kenji; Sako, Yoshitomo |
In a keying system, an image of an object is gained and a plurality of the background images each of which is obtained correspondingly to a view angle of a view point in a three-dimensional space to be imaged and a view position of the view point therein are stored on a memory device. The background image from the plurality of background images stored in the memory device is selectively read according to the view angle and the view position preliminarily defined in accordance with the image of the object. A chroma-keying composition is performed between the background image and the image of the object thereby producing a composite image. |
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| 57 | Improvements in electronic image keying systems | EP02252711.3 | 2002-04-17 | EP1251692A2 | 2002-10-23 | Hinson, Roy Neil; Searby, Anthony David; Throup, David |
A chroma keying system 1 processes foreground image data representing a foreground subject in front of a matte, together with background data representing a background image, to produce composite image data representing the foreground subject and the background in place of the matte. A programmable look up table 8 is provided for receiving on a pixel-by-pixel basis the most significant bits (MSBs) of the foreground image data and outputting in response thereto range data representing limits of a keying range. An interpolator 9 is also provided for interpolating the range data depending on the least significant bits (LSBs) of the foreground image data and outputting keying data. A combiner 4 combines the foreground image data and the background image data on a pixel-by-pixel basis in response to the keying data to produce the composite image data. The system is operable in a calibration mode in which a generator 15 is connected to input the colour point data to an external keyer. The generator 15 generates colour point data representing all possible colours that could be represented by the most significant bits of the foreground image data, causing the external keyer to output keying data. The look up table 8 is also connected to the external keyer in this mode so that it can receive and store the keying data for subsequent use in the processing of foreground image data together with background image data to produce composite image data. |
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| 58 | MULTIMODAL FOREGROUND BACKGROUND SEGMENTATION | PCT/US2014/033914 | 2014-04-14 | WO2014172226A1 | 2014-10-23 | COLLET ROMEA, Alvaro; ZHANG, Bao; KIRK, Adam, G. |
The subject disclosure is directed towards a framework that is configured to allow different background-foreground segmentation modalities to contribute towards segmentation. In one aspect, pixels are processed based upon RGB background separation, chroma keying, IR background separation, current depth versus background depth and current depth versus threshold background depth modalities. Each modality may contribute as a factor that the framework combines to determine a probability as to whether a pixel is foreground or background. The probabilities are fed into a global segmentation framework to obtain a segmented image. |
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| 59 | Chroma key device | JP6278288 | 1988-03-16 | JPH01236793A | 1989-09-21 | KOYAMA YUICHI |
| PURPOSE: To obtain a characteristic where the edge part of a synthesized picture is linear by subtracting a cancel luminance signal from the chroma cancelled chroma key back. CONSTITUTION: A luminance signal Y of a matrix circuit 2 is inputted to a luminance key forming circuit 5 to obtain a Y component C of a chroma key material signal. This Y signal is synthesized with a chroma key signal B by a key signal synthesizing circuit 6 to obtain a synthesized key signal D. The level of this signal D is adjusted by a cancel luminance generating circuit 9 and a multiplying circuit 10. Substraction between this level adjusted signal D and a chroma cancel signal E is performed by a subtracting circuit 12 to obtain a luminance cancel output E where the luminance component of the chroma key back is completely removed. This output F and a keying signal due to the chroma key signal of a background signal are added by an adding circuit 14 to output the synthesized picture having the characteristic where synthesis of the edge part is linear. COPYRIGHT: (C)1989,JPO&Japio | ||||||
| 60 | METHOD OF AND APPARATUS FOR PROCESSING FRAMES IN A DATA PROCESSING SYSTEM | US14949640 | 2015-11-23 | US20160156893A1 | 2016-06-02 | Michal Bogusz; Piotr Chrobak; Damian Modrzyk |
| An apparatus for providing a foreground frame to be composited with a background frame in a chroma-keying arrangement, each of the foreground frame and the background frame comprising one or more regions that together form the respective frame. A detection module determines whether each frame region has a predetermined colour value and generates and stores chroma keying information based on the determination. Control circuitry then controls image processing to be performed on the region according to the stored chroma keying information. | ||||||
