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Topic: YIQ


Related Topics
RGB
HLS
YUV

  
  YIQ   (Site not responding. Last check: 2007-10-21)
YIQ (Y for luminance, I for in-phase and Q for quadrature), like YUV, is a color space used in television signals.
YIQ is used predominantly by the NTSC television standard for encoding color information.
The YIQ color space is actually exactly the same as YUV, except the I-Q plane differs from the U-V plane by a simple 33-degree rotation and axis-swap.
encyclopedia.codeboy.net /wikipedia/y/yi/yiq.html   (302 words)

  
 Encyclopedia: YIQ   (Site not responding. Last check: 2007-10-21)
YIQ was a color space used in the NTSC television standard which has now turned obsolete.
This formula approximates the conversion from the RGB color space to YIQ.
R, G and B are defined on a scale from zero to one: The RGB color model utilizes the additive model in which red, green, and blue light are combined in various ways to create other colors.
www.nationmaster.com /encyclopedia/YIQ   (740 words)

  
 Station Information - YIQ
YIQ, like YUV, is a color space used in television signals.
The YIQ color space is actually exactly the same as YUV, except the I-Q plane differs from the U-V plane by a simple 33-degree rotation.
This rotation puts one of the two color axes in the orange region of the color space, which is where flesh tones are found.
www.stationinformation.com /encyclopedia/y/yi/yiq.html   (189 words)

  
 Glossary   (Site not responding. Last check: 2007-10-21)
Y is correct for luminance butI and Q are the two subcarriermodulation axes (I - In-phase and Q- Quadrature) used in the NTSC color coding system.Scaled and filtered versions of the R-Y and B-Ycolor difference signals are used to modulate the NTSCsubcarrier in the Iand Qaxes respectively.
YIQ is "simply"a color-encoding system similar to YUV, in which theU and V signals must be carried with equal bandwidth, albeit less thanthat of luminance.
YIQ is equivalent to YUV with a 33degree rotation and an axis flip in the UV plane.
www.infoprovider.com /infobase/y.html   (419 words)

  
 YIQ   (Site not responding. Last check: 2007-10-21)
YIQ is used predominantly by the NTSC television standard for encoding colorinformation.
The YIQ color space is actually exactly the same as YUV, except the I-Q plane differs from the U-V plane by a simple33-degree rotation and axis-swap.
This rotation puts the I color axis in the orange region of the color space, which is whereflesh tones are found.
www.therfcc.org /yiq-140048.html   (221 words)

  
 Information on the YIQ colour space
The YIQ model is used in U.S. commercial color television broadcasting and is a recoding of RGB for transmission efficiency and for downward compatibility with fl-and-white television.
The YIQ color space, like RGB and HSV, is a device-dependent color space, meaning the actual color you see on your monitor depends on what kind of monitor you are using, and what its settings are.
The YIQ model is a 3D Cartesian coordinate system, with the visible subset being a convex polyhedron that maps into the RGB cube (as shown in the pictures of the applet).
www.nacs.uci.edu /~wiedeman/cspace/me/infoyiq.html   (882 words)

  
 Modelli colore - RGB, CMKY, HSB, HLS, YIQ, CMY, Lab, Grayscale   (Site not responding. Last check: 2007-10-21)
YIQ è il modello preferito per lavorare con i video, è usato nel sitema di trasmissione televisiva (video standard del Nord America: NTSC).
In PP, la componente Y del processo di suddivisione produce un'immagine in scala di grigi che spesso è di qualità superiore a quella ottenuta con il comando Converti in nel menu Immagine.
YIQ is the preferred model when working with video, it is used in television broadcast systems (North American video standard: NTSC).
www.carla146.it /tips/tiptesti/30rgbcmyk.htm   (1841 words)

  
 Audio/Video Glossary
YIQ is equivalent to YUV with a 33 degree rotation and an axis flip in the UV plane.
In analog usage the terms YUV and YIQ are often used somewhat interchangeably.
YIQ was important in the early days of NTSC but most broadcasting equipment now encodes equiband U and V. The D-2 composite digital DVTR (and the associated interface standard) conveys NTSC modulated on the YIQ axes in the 525-line version and PAL modulated on the YUV axes in the 625-line version.
www.ardenwoodsnd-dvd.com /glossary/glossary_y.html   (530 words)

  
 YIQ - Unipedia   (Site not responding. Last check: 2007-10-21)
YIQ color coding as applied to computer generated video (Massachusetts Institute of Technology.
B.S) Top 10 Bestselling Books: YIQ color coding as applied to computer generated video (Massachusetts Institute of Technology.
B.S) Books : YIQ color coding as applied to computer generated video (Massachusetts Institute of Technology.
www.unipedia.info /YIQ.html   (479 words)

  
 YIQ Computer graphics system - Patent 4475161
A YIQ computer graphics system includes a data processing system having a data tablet for receiving inputs from an artist and a video processing system connected to the data processing system.
The Q color component signal appearing on bus 323 would be communicated to a third multiplexer corresponding to multiplexer 374 with the remaining signal processing for the Q color component being substantially duplicative of that for the I color component which is shown in FIG.
The output of digital-to-analog converter 368 is successively passed through an amplifier 371, a low pass filter 372, a YIQ to RGB transformation matrix 374, a gamma correction filter 376 and an output driver 378 to generate the Y component of the video signal.
www.freepatentsonline.com /4475161.html   (12317 words)

  
 The YIQ color space   (Site not responding. Last check: 2007-10-21)
In the YIQ color space Y component represent the intensity, the I and Q component represents the color information.
By separating the intensity from the color information makes the YIQ color space very attractive to TV broadcasting, because it helps maintain compatibility with monochrome TV standards.
The YIQ model also takes advantage of the fact that the human eye is more sensitive to changes in luminance than changes to hue or saturation.
www.prinerdrivers.com /Help/Tools/Image%20SDK%20webhelp/WebHelp/The_YIQ_color_space.htm   (121 words)

  
 Colour Image and Video Representations
Beside the RGB representation, YIQ and YUV are the two commonly used in video.
YIQ is used in colour TV broadcasting, it is downward compatible with B/W TV.
I is red-orange axis, Q is roughly orthogonal to I. Eye is most sensitive to Y, next to I, next to Q. In NTSC, 4 MHz is allocated to Y, 1.5 MHz to I, 0.6 MHz to Q. An Example YIQ Decomposition is shown in Fig.
www.cs.cf.ac.uk /Dave/Multimedia/node189.html   (263 words)

  
 The YIQ color model   (Site not responding. Last check: 2007-10-21)
The YIQ model is closely related to color raster graphics.
The YIQ is a recording of RGB for transmisson efficiency and downward compability with fl-an-white televisions.
The component Y of the YIQ color model does not stand for yellow but luminance, and is defined to be the same as the CIE Y primary.
www.igd.fhg.de /~schnaide/Ideals/HQRasterImages/html/ColorModel006.html   (182 words)

  
 [No title]   (Site not responding. Last check: 2007-10-21)
The source data is irrelevant so we just allocate a random chunk of memory and start using that as our sample YIQ frame.
Since this is a hypothetical simulation of pure FP performance, we eliminate integer code that would normally muddy up the pipe in a correct implementation.
Examining the generated code under PPC reveals that the loop consists fully of FP instructions except for the incrementing of the 'n' index.
www.cs.ualberta.ca /~ajit/YIQ.c   (163 words)

  
 Converting between RGB and CMY, YIQ, YUV   (Site not responding. Last check: 2007-10-21)
The YIQ system is the colour primary system adopted by NTSC for colour television broadcasting.
The YIQ color solid is formed by a linear transformation of the RGB cube.
Its purpose is to exploit certain characteristics of the human visual system to maximize the use of a fixed bandwidth.
astronomy.swin.edu.au /~pbourke/colour/convert   (110 words)

  
 IFSAF the underlying theory
Or, in other words, those three blocks (one in each of the Y,I,Q color planes) that are the color components of a block in the true-color image.
In the first stage we have to convert the image from the RGB model to another color model that is more suitable for exploiting the differences in how the human eye perceives the colors.
Examinating several different images and their related YIQ color planes, we noticed that something as the "shape" of the gray-scale image on each channel is preserved - even if not exactly -.
www.verrando.com /pulcini/gp-ifs4.html   (624 words)

  
 MODELO DE COLORES YIQ   (Site not responding. Last check: 2007-10-21)
YIQ fue creada por NTSC (National Television System Commitee) aunque se basa en las especificaciones de la CIE.
La inversa de la matriz RGB a YIQ se usa para la conversión YIQ a RGB.
La codificación NTSC de YIQ a una señal de transmisión usa estas propiedades para maximizar la cantidad de información transmitida en un ancho de banda fijo: se asigna 4 MHz a Y, 1.5 MHz a I y 0.6 MHz a Q.
rnasa.tic.udc.es /gc/Contenidos%20adicionales/trabajos/Tutoriales/color/YIQ.htm   (355 words)

  
 Class: Color::YIQ
A colour object representing YIQ (NTSC) colour encoding.
The other colour will be converted to YIQ before comparison, so the comparison between a YIQ colour and a non-YIQ colour will be approximate and based on the other colour’s
This will report that two YIQ values are equivalent if all component colours are within 1e-4 (0.0001) of each other.
ruby-pdf.rubyforge.org /color-tools/doc/classes/Color/YIQ.html   (93 words)

  
 yiq email (spam-free!) and website community   (Site not responding. Last check: 2007-10-21)
It can be used for anything: the yiq surname, the yiq family, the yiq fan club, the yiq alumni group, yiq genealogy, or any other community or group about yiq.
This your chance to get a matching yiq email address, matching yiq website and matching yiq single sign-on "passport" (once these are commonly accepted).
If you were looking for a different yiq, please do a yiq search here.
www.yiq.pw   (359 words)

  
 YIQ Encyclopedia Article, Definition, History, Biography   (Site not responding. Last check: 2007-10-21)
Looking For yiq - Find yiq and more at Lycos Search.
Find yiq - Your relevant result is a click away!
This article needs to be cleaned up to conform to a higher standard of quality.
www.karr.net /encyclopedia/YIQ   (555 words)

  
 [No title]
YIQ and YUV are, if used according to their relative specifications, linear.
YUV is used in European TVs (PAL) and YIQ in North American TVs (NTSC).
This color space is similar to YUV and YIQ without the disadvantages.
www.aim-dtp.net /aim/technology/color-spaces_faq/color-space.faq.txt   (7939 words)

  
 D:\JAVA\PROJECT\HTML\User   (Site not responding. Last check: 2007-10-21)
It may be rotated, as in the RGB frame, by dragging the mouse over the cube's canvas.
Indeed, the RGB gamut does not cover even all visible colors, let alone those that may be specified in other coordinate systems.
Putting constraints on the allowed coordinate ranges would have made the user interface to the YIQ and LAB frames very ambiguous, for dynamic range recalculations result in rescaling of all the controls.
www.cs.rit.edu /~ncs/color/user.htm   (1272 words)

  
 YIQ - Detaillierte Informationen   (Site not responding. Last check: 2007-10-21)
Converting between RGB and CMY, YIQ, YUV The YIQ system is the colour primary system adopted by NTSC for colour...
YIQ Conversion The YIQ color space is used in US color television broadcasting.
Weitere Informationen zum Thema YIQ, YUV, Y RY BY finden Sie über unsere...
yiq.detaillierte-informationen.de   (374 words)

  
 Color Conversion Algorithms   (Site not responding. Last check: 2007-10-21)
The YIQ system is the color primary system adopted by National Television System Committee (NTSC) for color TV broadcasting.
The YIQ color solid is made by a linear transformation of the RGB cube.
Its purpose is to exploit certain characteristics of the human eye to maximize the utilization of a fixed bandwidth.
www.cs.rit.edu /~ncs/color/t_convert.html   (1006 words)

  
 [No title]   (Site not responding. Last check: 2007-10-21)
Color luminance (intensity) in the RGB color matrix was then matched by setting the values of the Y channel in the same colors in the YIQ Color Matrix to equivalent values.
The resultant RGB values were scaled to be between 0 and 1.
This author believes that plot 2 does a better job than plot 1 of intensity matching between the two building plot colors.
members.aol.com /cuppancd/myhomepage/Cuppan_INFT875_a4_RGB_matrix.xls   (84 words)

  
 "What Happend to My Colors!?! Displaying Console Computer Graphics on a TV"
You need to convert to YIQ (although YUV actually works just as well) then scale I and Q or U and V and then convert back to RGB (Martindale 91).
It's worth noting that there are also YIQ colors that represent RGB colors outside of the unit RGB cube.
Video editors who do some of their work in YIQ or YUV need to deal with this, but we don't have to.
www.gamasutra.com /features/20010622/dawson_03.htm   (1461 words)

  
 Script Lesson 9 Drill   (Site not responding. Last check: 2007-10-21)
Use the key for "`" or "~" to add a "yá yiq" to the following consonant scripts.
Although "yá yiq" follows a consonant in handwriting, one needs to type it first in typewriting.
[kájì yá yiq, khá gwè yá yiq, gángeh yá yiq, pázauq yá yiq, phá ouq htouq yá yiq, bálâchaiq yá yiq, má yá yiq]
www.seasite.niu.edu /burmese/Script/SLessons/SLesson9/drill.htm   (109 words)

  
 14.7 colorsys -- Conversions between color systems
Coordinates in all of these color spaces are floating point values.
In the YIQ space, the Y coordinate is between 0 and 1, but the I and Q coordinates can be positive or negative.
Convert the color from YIQ coordinates to RGB coordinates.
python.cofman.dk /doc/lib/module-colorsys.html   (170 words)

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