| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | 改进的色度键控系统 | CN95192839.2 | 1995-04-25 | CN1147324A | 1997-04-09 | 迈克尔·塔米里; 阿维·沙拉 |
| 一种与色度键控系统(10，14，50，60)结合使用的色度键控图板(20)。该图板(20)包括彩色图案(40)，该图案具有多个具有颜色键控谱中的第一颜色的第一区域和多个具有颜色键控谱中的第二颜色的第二区域。 | ||||||
| 2 | 改进的色度键控系统 | CN95192839.2 | 1995-04-25 | CN1094015C | 2002-11-06 | 迈克尔·塔米里; 阿维·沙拉 |
| 一种与色度键控系统(10，14，50，60)结合使用的色度键控图板(20)。该图板(20)包括彩色图案(40)，该图案具有多个具有颜色键控谱中的第一颜色的第一区域和多个具有颜色键控谱中的第二颜色的第二区域。 | ||||||
| 3 | 利用色度键控的姿势识别 | CN201080028299.1 | 2010-06-23 | CN102804204B | 2015-07-01 | 宋嵘; J·王; Y·刘; H·张 |
| 本发明提供一种用于对目标进行分析的方法和系统。该系统包括：布置在目标之后的背景，其中所述背景的颜色允许选自一组颜色；第一单元，用于对所述背景设置给定颜色，以使得所述给定颜色不同于所述目标的颜色；第二单元，用于拍摄包括所述目标和所述背景的图像；以及第三单元，用于根据由所述第二单元拍摄的图像来检测与所述目标相关的至少一个特征。在该系统中，背景的颜色允许设置成不同于目标的颜色。以这样的方式，容易将所拍摄图像中的目标部分与背景部分区分开。这实现对于不同目标，特别是具有不同颜色的目标的稳定识别。 | ||||||
| 4 | 利用色度键控的姿势识别 | CN201080028299.1 | 2010-06-23 | CN102804204A | 2012-11-28 | 宋嵘; J·王; Y·刘; H·张 |
| 本发明提供一种用于对目标进行分析的方法和系统。该系统包括：布置在目标之后的背景，其中所述背景的颜色允许选自一组颜色；第一单元，用于对所述背景设置给定颜色，以使得所述给定颜色不同于所述目标的颜色；第二单元，用于拍摄包括所述目标和所述背景的图像；以及第三单元，用于根据由所述第二单元拍摄的图像来检测与所述目标相关的至少一个特征。在该系统中，背景的颜色允许设置成不同于目标的颜色。以这样的方式，容易将所拍摄图像中的目标部分与背景部分区分开。这实现对于不同目标，特别是具有不同颜色的目标的稳定识别。 | ||||||
| 5 | 改进的用于数字视频简单形状编码的色度键控技术 | CN99810987.8 | 1999-08-23 | CN1318258A | 2001-10-17 | 克里特·帕努索芬; 陈学敏 |
| 使用最佳转换门限值、用于数字视频的基于色度键的有效的编码技术。提供最佳二进制键控门限值用于在第一个图像区域和第二个图像区域(如前景目标)之间转换视频图形。该门限值使基色K的量化误差Q的PSNR最佳化。还提供色度键控技术用于表示视频目标的形状，这里前景目标的形状信息被嵌入在键控输出中，所以不需要传送显式α平面或使用α平面编码。色度键形状表示技术提供了目标之间边界上的平滑转换而不需要特别的转换模式。 | ||||||
| 6 | Chroma keying | US12211443 | 2008-09-16 | US08081821B1 | 2011-12-20 | Stephan Schaem |
| Systems, methods, and apparatus, including software tangibly stored on a computer readable medium, involve receiving reference data and source data. The reference data includes a portion of a background image, and the background image includes an image of a background. The source data includes a portion of a source image, and the source image includes an image of the background and a foreground. A reference saturation value, which relates to a saturation of the portion of the background image, is calculated based on the reference data. A difference value, which relates to a difference between the portion of the background image and the portion of the source image, is calculated based on the source data and the reference data. A source image weighting value is determined based at least in part on a ratio between the difference value and the reference saturation value. The source image weighting value is stored, for example, in a machine-readable medium. The source image weighting value can be used for combining the source image with a replacement background image, which includes an image of a replacement background. Multiple source image weighting values can be calculated, for example, to generate an alpha channel for the source image. | ||||||
| 7 | 디지털 비디오 압축 시스템의 크로마-키잉 방법 | KR1019997007444 | 1998-12-14 | KR100603719B1 | 2006-07-26 | 챌라팔리키란; 첸잉웨이 |
| 크로마-키 코딩을 수행하는 방법은 컬러 영역들을 규정하고 영역들내의 화소들의 수를 양자화하고, 이와 같이 양자화된 화소들의 수에 따라 매크로블록들을 분류하고, 매크로블록들의 분류에 기초하여 양자화 스텝-사이즈의 계산에 사용하기 위한 크로마 복잡성 가중들을 할당하고, 양자화 스텝-사이즈를 계산하고, 양자화를 수행하고 가변 길이 코딩을 수행하는 단계를 포함한다. 크로마-키 코딩, 화소, 양자화, 매크로블록, 스텝-사이즈 | ||||||
| 8 | 디지털 비디오 압축 시스템의 크로마-키잉 방법 | KR1019997007444 | 1998-12-14 | KR1020000071154A | 2000-11-25 | 챌라팔리키란; 첸잉웨이 |
| 크로마-키코딩을수행하는방법은컬러영역을정의하고, 상기영역에다수의화소를양자화하고, 이와같이양자화된다수의화소에따라매크로블록을분류하고, 매크로블록의분류에기초하여양자화스텝-사이즈의계산에사용하기위한크로마복잡성웨이트를할당하고, 양자화스텝-사이즈를계산하고, 양자화를수행하고가변길이코딩을수행하는단계를포함한다. | ||||||
| 9 | CAMERA SYSTEM WITH FLASH ILLUMINATION AND CHROMA-KEYING | PCT/GB1996002726 | 1996-11-07 | WO1997017803A1 | 1997-05-15 | IMAGINI CORPORATION LIMITED |
| A camera system for generating a composite image of a subject superimposed on a background image, the system comprising: (a) a flash apparatus (100) operable to flash illuminate the subject; (b) image capture apparatus (90) for capturing a flash-illuminated image and a non-flash-illuminated image of the subject in front of a chromakey screen; (c) a matte generator for generating a matte from the non-flash-illuminated image; and (d) a chromakey image combiner for combining the background image with the flash-illuminated image in accordance with the matte to generate the composite image. | ||||||
| 10 | Chroma keying system | US217973 | 1980-12-19 | US4319266A | 1982-03-09 | Richard S. Bannister |
| A chroma keying system which prevents the production of a chroma key signal when the primary color signals are equal is described. This system effectively prevents chroma keys on monochrome portions of color foreground camera signals. These monochrome portions are typically caused by uneven studio lighting and the resulting shadows and reflections. The system includes a comparator which compares the R, G, and B signals and generates an inhibit signal therefrom. This inhibit signal is then used to prohibit the generation of a chroma key signal. | ||||||
| 11 | Virtual chroma keying in real time | US13864019 | 2013-04-16 | US20140306995A1 | 2014-10-16 | Fazal Raheman; Ali Fazal Raheman |
| This invention discloses a real time chroma keying method of eliminating the need for a large and bulky monochromatic screen background in a live non-studio outdoor or indoor setting by creating computer-generated virtual or soft chroma keying layers. More particularly the invention relates to a live portable hybrid chroma keying technique that programmatically generates a contiguous chroma for keying in multiple layers of computer-generated graphics as background and foreground of a scene in real time. The invention is particularly useful in creating HD quality special effects video footage of consumers on-the-fly for use in entertainment, advertainment, advertising campaigns, immersive gaming and related industries; and can be implemented in almost any location whether it is high-footfall public place, such as mall, airport, bus or train transit station, conference, trade show, library, museum, amusement park or some such social venue, or even in living room or home theatre of a private home. | ||||||
| 12 | Graphical display of chroma keyer controls | US395233 | 1995-02-27 | US5627951A | 1997-05-06 | Daniel J. Chaplin; Paul M. Trethewey; Paul S. Miller |
| A graphic display for chroma keyer controls presents background hue as a radial spoke of an outer chroma vector circle, with selectivity being displayed as a wedge about the radial spoke. Foreground suppression may be added to the graphic display by providing a concentric inner chroma vector circle with the foreground suppression hue being a radial spoke of the inner circle and foreground selectivity being a wedge within the inner circle about such radial spoke. That portion of the outer circle that is overlapped by the inner circle is suppressed, or rendered invisible, so that the background chroma information appears as a torus about the inner chroma vector circle. | ||||||
| 13 | Generating a chroma keying signal | US725445 | 1985-04-22 | US4636838A | 1987-01-13 | Ian S. Cosh |
| A chroma keying signal generator has an input (1) to which digitally encoded color difference signals (R-Y and B-Y) are applied and output (27) at which a keying signal is produced. The arrangement calculates a value tan.sup.-1 (R-Y)/(B-Y) which represents the hue and a value (R-Y).sup.2 +(B-Y).sup.2 which represents the (saturation).sup.2. Preselected values of hue and (saturation).sup.2 are stored in latches (20,22) and compared with the calculated values derived from the incoming color difference signals in comparators (24,25). When the calculated hue is substantially equal to the value stored in latch (20) and the calculated (saturation).sup.2 is greater than the value stored in latch (21) both comparators (24,25) produce an output which causes the AND gate (26) to produce a keying signal which is applied to output 27. | ||||||
| 14 | Chroma keying selector system | US938244 | 1978-08-30 | US4183045A | 1980-01-08 | Donald C. Herrmann; Lucas J. Bazin |
| A remotely controlled chroma keyer is provided which is responsive to the red, green and blue signals from a video source such as a color camera for providing color difference signals. A signal processing system using quadrant multipliers is used for summing and differencing these color difference signals which when applied to a non-additive mixer select a particular color. The color selection is determined by control voltages applied to the multipliers. | ||||||
| 15 | Generating a chroma keying signal | EP85200602.2 | 1985-04-18 | EP0162502A2 | 1985-11-27 | Cosh, Ian Sinclair |
A chroma keying signal generator has an input (1) to which digitally encoded colour difference signals (R-Y and BY) are applied and output (27) at which a keying signal is produced. The arrangement calculates a value tan -1 R-YB-Y which represents the hue and a value (R-Y)2 + (B-Y)2 which represents the (saturation)2. Preselected values of hue and (saturation)2 are stored in latches (20,22) and compared with the calculated values derived from the incoming colour difference signals in comparators (24,25). When the calculated hue is substantially equal to the value stored in latch (20) and the calculated (saturation)2 is greater than the value stored in latch (21) both comparators (24,25) produce an output which causes the AND gate (26) to produce a keying signal which is applied to output 27. |
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| 16 | Color diamond chroma keying | US09765878 | 2001-01-18 | US06751347B2 | 2004-06-15 | Daniel Pettigrew; Francois Paquin |
| A process of defining a color volume for use in a process of color keying, in which a foreground image (405) is composited against a background image (407). The foreground image (405) contains regions of a background color (723). The user defines diamond shaped areas (611, 621) in PbPr color dimensions, and luminance ranges (612, 622). Tolerance and softness volumes (613, 623) are defined in this way, and a transformation is defined for each. Foreground pixels are processed (602) to determine a background, foreground, or softness condition for a matte (406). Softness represents a partial mix of foreground and background. The mix level is calculated by re-centering (1201) the softness volume, and processing (1206) with an optional sharpness parameter (706). | ||||||
| 17 | Prompting guide for chroma keying | US595311 | 1996-02-01 | US5886747A | 1999-03-23 | Aviv Tzidon; Dekel Tzidon |
| A method and apparatus is described where the coordinates of the main objects of a video studio set are placed in a computer and special markings are projected or screened on the floor or on the studio walls in real time. This enables an actor to easily find his way around the set, and to focus his gaze on the virtual objects appearing in or disappearing from the studio. The present invention gives the actor the timings for various events taking place in the studio. The special markings are completely invisible to the camera and to the home viewers because they are only active during virtual blanks of the camera such as the vertical blanking interval or the horizontal blanking interval in an NTSC, PAL, SECAM or other video signal format. | ||||||
| 18 | Chroma keyer color discriminator | US479467 | 1983-03-28 | US4864388A | 1989-09-05 | Ole Skrydstrup |
| A chroma keyer color discriminator wherein orthogonal color difference signals B-Y and R-Y are rotated through an angle .phi. corresponding to a desired chroma keying signal where R and B are red and blue signals and Y is the luminance signal where Y=0.3R+0.59G+0.11B. The rotated signals (R-Y)' and (B-Y)' are processed to develop B'-G' and B'-R' signals to enhance the selectivity of the discriminator. Difference signals other than B-Y, R-Y, B'-G', and B'-R' may also be employed. | ||||||
| 19 | Analog chroma keying on color data | US154955 | 1993-11-19 | US5398075A | 1995-03-14 | Lawrence K. Freytag; Bill A. Munson |
| A circuit for analog chroma keying on color data permits display of graphics, generated from a computer system, and video on an output display. The analog chroma keying circuit receives the graphics signals and the video signals, wherein the graphics signals include color data to designate a color key. The analog chroma keying circuit includes a plurality of digital to analog converters that generate a plurality of color key limits for defining a range to detect the color data denoting the color key. The analog chroma keying circuit also includes a plurality of comparators coupled to receive the graphics signals and the color key limits for each primary color. The plurality of comparators generate a key on indicator when the graphics signals fall within the color key limits. The key on indicator is input to a plurality of analog switches that couples the graphics signals to the output display when the key on indicator indicates the graphics signals are not within the color key limits, and couples the video signals to the output display when the graphics signals are within the color key limits. | ||||||
| 20 | Video superimposition system with chroma keying | US891698 | 1986-07-29 | US4697176A | 1987-09-29 | Kiyotada Kawakami |
| A graphic decoder circuit for a compact disk player has a color signal generator (6) called a color look-up table (CLUT), which outputs RGB video signals stored in parts addressed by color code signals. The color code signals are simultaneously supplied to a decoder circuit (10), which in turn outputs switching signals (Ys) for superimposition only when specific color signals designated by switching means (11) are inputted. Thus, graphic information from the compact disk player formed by arbitrary colors can be superimposed on pictures obtained from a television receiver or the like. | ||||||
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