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Topic: Color model

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In the News (Thu 21 Mar 19)

  CMYK color model - Wikipedia, the free encyclopedia
However, the color seen on a computer screen is often different from the color of the same object on a printout since CMYK and RGB have different gamuts.
The nearest equivalent in CMYK is a dissimilar shade of purple.
However, conversion of CMYK colors in general to RGB colors is not invertible; that is, given a CMYK color which is converted to RGB, performing the former conversion may not give the original CMYK color.
en.wikipedia.org /wiki/CMYK_color_model   (906 words)

 RGB color model - Wikipedia, the free encyclopedia
The RGB color model is an additive model in which red, green and blue (often used in additive light models) are combined in various ways to reproduce other colors.
The RGB color model itself does not define what is meant by "red", "green" and "blue", and the results of mixing them are not exact unless the exact spectral make-up of the red, green and blue primaries are defined.
One common application of the RGB color model is the display of colors on a cathode ray tube, liquid crystal display or plasma display, such as a television or a computer's monitor.
en.wikipedia.org /wiki/RGB   (2335 words)

 Model color space RGB   (Site not responding. Last check: 2007-10-08)
Model RGB is one of the first practical models of area of colors and contains the recipe for creation of colors.
This is the model resulting from the receiving specifities of eye and it is based on fact that the impressions of almost all the colors in eye can be evoked by mixing in the fixed propotions of three selected clusters of light of the properly chosen width of spectrum.
Model RGB defines in the evident manner that what the intensity is but for the individual components R,G,B. Namely, the values of components RGB describe individually the intensity of the given basic color as a number of partition from 0 to 1 and do not subject this value to the two remaining components.
semmix.pl /color/models/emo13.htm   (642 words)

 Reading on Color and Light, Part III: Composition of Color
The sensation of color depends primarily on the composition of light which is a mixture of white light and colored light (which in itself can be a mixture of wavelengths as in the case of purple).
The colored light may have a dominant wavelength or hue and the extent to which the hue dominates is known as saturation (or chroma).
At the apices are the additive primary colors and at the edges, the subtractive colors.
acept.la.asu.edu /PiN/rdg/color/composition.shtml   (866 words)

 Skin Color Model
The color distribution of skin colors of different people was found to be clustered in a small area of the chromatic color space.
A total of 32500 skin samples from 17 color images were used to determine the color distribution of human skin in chromatic color space.
As the skin samples were extracted from color images, the skin samples were filtered using a low-pass filter to reduce the effect of noise in the samples.
www-cs-students.stanford.edu /~robles/ee368/skincolor.html   (567 words)

 Graphics Color Models
Since a color model has a particular range of available color or gamut, it is referred to as using a "color space".
In the RGB color model, colors are represented by varying intensities of red, green and blue light.
In the CMYK color model, colors are represented as percentages of cyan, magenta, yellow and fl.
www.sketchpad.net /basics4.htm   (1228 words)

 ZDNet: d e v e l o p e r: Color Models and Management   (Site not responding. Last check: 2007-10-08)
When designers deal with color, they usually rely on one of two color models: the additive color model, in which individual color waves combine to form white light, or the subtractive color model, in which pigments are used to subtract light waves.
The inverse of the RGB model is the CMYK model, in which light waves are subtracted to produce the desired color.
At this point, it should be apparent that the primary colors of the CYMK model are the secondary colors of the RGB model, and vice versa.
www.ysbl.york.ac.uk /~mgwt/KKwebcourse/colourscience/colourmodels.html   (535 words)

 CSS3 Color Module
Hue is represented as an angle of the color circle (i.e.
The format of an HSLA color value in the functional notation is 'hsla(' followed by the hue in degrees, saturation and lightness as a percentage, and an , followed by ')'.
User agents may default the 'flavor' color to the dominant accent color used on the physical machine/mechanism that the user is interacting with (frequently a mouse, keyboard, monitor and computer case, often just a laptop), if the UA is able to retrieve that information from the platform and machine.
www.w3.org /TR/css3-color   (3853 words)

 Art Education Articles - Color Coding
Current styles of teaching color first emerged at a time when new technologies were drastically increasing the availability of synthetic pigments in pure, high chroma hues and when artists were eschewing such extra-visual matters as narrative and iconography in favor of abstraction and formal issues.
In comprehensive color systems, such as Wilhelm Ostwald’s in The Color Primer, these individual charts are then combined into a multi-dimensional chart so that the student is presented with a three-dimensional model, a color solid, which is said to summarize all the possible variations of colors.
In the Munsell model, a basic hue circle cannot easily be seen because colors are located vertically at their correct value level, hence a saturated violet will be low on the value scale; a saturated yellow will be at a high level.
www.uic.edu /classes/ad/ad382/sites/AEA/AEA_04/AAEA04a.html   (1503 words)

 GRAPHICS: Color displays
Color monitors for desktop microcomputers are based on cathode ray tubes (CRTs) or back-lighted flat-screen technologies.
The terminology and memory schemes used in color displays are directly analogous to those used to describe color depth in graphics files.
In 8-bit images the 256 colors that make up the image are stored in an array called a "palette" or an "index." The color palette may also be referred to as a "color lookup table" (CLUT).
www.webstyleguide.com /graphics/displays.html   (556 words)

 HSV color space - Wikipedia Light!   (Site not responding. Last check: 2007-10-08)
It is a nonlinear transformation of the RGB color space, and may be used in color progressions.
The HSV color space could also be visualized as a cylindrical object; similar to the cone above, the hue varies along the outer circumference of a cylinder, with saturation again varying with distance from the center of a circular cross-section.
Such a representation might be considered the most mathematically accurate model of the HSV color space; however, in practice the number of visually distinct saturation levels and hues decreases as the value approaches fl.
godseye.com /wiki/index.php?title=HSV_color_space   (1278 words)

 Color Principles - Hue, Saturation, and Value
Colors are described with three components: luminance or lightness (L) and two chromatic components, one of which ranges from green to red (a), the other from blue to yellow (b).
This color is the complement of the primary.
Not surprisingly, colors close to each other in the HSV color model (or any of the other models discussed) are hard to distinguish from each other.
www2.ncsu.edu /scivis/lessons/colormodels/color_models2.html   (4181 words)

 Color Space
Conversion between Java color spaces is simplified by a set of methods that map a color from a represented color space to either sRGB or CIEXYZ and transform a sRGB or CIEXYZ color space to the represented color space.
The sRGB color space is somewhat limited in that it cannot represent every color in the full gamut (spectrum of representable colors) of CIEXYZ color.
color space or color spaces that are represented by commonly-available ICC profiles, such as profiles for monitors and printers or profiles embedded in image data.
java.sun.com /products/java-media/jai/forDevelopers/jai1_0_1guide-unc/Color.doc.html   (2209 words)

 Color in Image and Video   (Site not responding. Last check: 2007-10-08)
The color signal to the brain comes from the response of the 3 cones to the spectra being observed.
CMY model is mostly used in printing devices where the color pigments on the paper absorb certain colors (e.g., no red light reflected from cyan ink).
Two common color models in imaging are RGB and CMY, two common color models in video are YUV and YIQ.
www.cs.sfu.ca /CourseCentral/365/li/material/notes/Chap3/Chap3.3/Chap3.3.html   (1030 words)

 Color (Java 2 Platform SE v1.4.2)
An alpha value of 1.0 or 255 means that the color is completely opaque and an alpha value of 0 or 0.0 means that the color is completely transparent.
Creates an sRGB color with the specified combined RGBA value consisting of the alpha component in bits 24-31, the red component in bits 16-23, the green component in bits 8-15, and the blue component in bits 0-7.
Converts the components of a color, as specified by the default RGB model, to an equivalent set of values for hue, saturation, and brightness that are the three components of the HSB model.
java.sun.com /j2se/1.4.2/docs/api/java/awt/Color.html   (1998 words)

 Image Processing Khorosware: Color
For instance, the color model RGB is used in hardware applications like TV monitors and cameras, the CMY color model is used in color printers, and YIQ model in television broadcast.
The three primaries for the CIE color model are X, Y, and Z, where Y is chosen to match the luminance-efficiency function and X and Z are selected relative to that in order to describe the chromaticity.
The range of colors possible from some set of primaries is the gamut of color for those primaries, and it bounded by the lines between the primary points.
www.mcs.csuhayward.edu /~grewe/CS6825/Mat/Color/color2.htm   (1090 words)

Color THeory uses a color model that is based on the traditional artist's color wheel.
Color Theory is based on an artist's RYB color palette.
This is because your monitor uses the RGB model to define a pixel.
www.digitalanarchy.com /theory/theory_main.html   (224 words)

 Information Technology: Web Central - Color - RGB Color Model   (Site not responding. Last check: 2007-10-08)
The standard color model used on the Internet is RGB, which takes the form of #RRGGBB where each letter, or digit, represents a hexadecimal digit.
The six digit RGB Color Model code is divided into 3 pairs of hexadecimal digits, which represent 0 (zero) to FF (255).
Any color you can imagine can be obtained through the RGB color model.
www.susqu.edu /webcentral/rgbcolor.cfm   (317 words)

 WDVL: Color / Colour
The standard color model used on the Internet is RGB, which consists of a set of three values from 0 (zero) to 255 in decimal notation, or 0 - ff in hexadecimal (frequently mis-spelt as 'hexidecimal') notation.
The colors you create depend on the mixture of these three colors, which are indicated by their respective numerical values.
If a color used in an image is not found in the color table, the software will either substitute a color from the color table which is similar to the color specified in the image, or it will dither the colors to approximate the desired color.
wdvl.internet.com /Authoring/Graphics/Colour   (784 words)

 creativepro.com - Inside Photoshop: The Color Lab   (Site not responding. Last check: 2007-10-08)
Unlike RGB colors that are screen-dependent and CMYK colors that vary with printer, ink and paper characteristics, CIE Lab colors are device-independent.
The Lab color model actually includes all of the colors that you can create in both RGB and CMYK modes.
The Lab color model encompasses all of the colors available in both CMYK and RGB modes.
www.creativepro.com /story/feature/12869.html   (1306 words)

 Color Models
Numerous models and systems have been developed, and the following is an attempt to summarize some of the major leaps that have been made to bring our understanding to its current level.
The amounts of red, green, and blue (on a scale from 0 to 255) are indicated in the text box beside the slider, and a visual representation of the amounts are shown on the sliders themselves.
The color can be chosen from the 'slice' by clicking on the fl out-lined circle and moving it around in the space.
www.cs.brown.edu /courses/cs092/VA10/HTML/ColorModels.html   (1033 words)

 E-Pub Author Documentation
\definecolor{name}{model}{color-spec} defines the color name, which may then be used in subsequent \color or \textcolor commands to refer to a color specified by color-spec in the color model model.
Placing color names rather than numeric specifications into the dvi file has certain advantages, in that post processing software can tune the color specifications to the particular technology being used, and more easily make color separations for that color.
Drivers based on `color3' do not support named colors at the dvi level, but to ease document portability, the named model is still defined, but the \specials just put the color specifications, not the names, into the dvi file.
spib.ece.rice.edu /E-Pub/submit/subdocs.html   (1956 words)

The general idea is to design a color model based on the human vision system.
With the new model, controls are then designed that will simplify image color manipulation such as recoloring an image using warm-cool tones.
The new color model, known as the DKL model, was created by one of the graduate students.
www.cs.utah.edu /~halzahaw/DMP2004/Project.html   (604 words)

 theWhiteSite: Computing: VB: The HSB Color Model
The name comes from the fact that each screen color is created varying the intensities of the Red, Green and Blue light beams that exist inside the monitor.
It certainly was just a matter of varying the intensities of each light beam so we would get a linear pattern of color shades where all the Reds would be grouped together, followed by all the Greens and, finally, all the Blues while the missing colors would be placed between each of these base shades.
Saturation: A colored spot can have a variation on the amount of color applied to it, that is, how vivid the color is. This is given by a percentage, where 0% means no color (White) and 100% means "normal" (very vivid).
www.geocities.com /branco_medeiros/computing/VB00001.htm   (1395 words)

 RGB Color Model
mixing colored lights), is represented on the computer using the hexadecimal number rrggbb.
Cyan is the complement of Red, magenta the complement of green, and yellow the complement of blue-violet.
This is represented by how far out from the center of the RGB color wheel.
www.stevepasos.com /ai/im/wk04/04_weekly_topics.htm   (251 words)

 UML in Color to UI Design : White Paper : uidesign.net   (Site not responding. Last check: 2007-10-08)
Modeling using 4 colors was first proposed by Peter Coad at OOPSLA'97 [Coad 97] and formalised in his new book, "Java Modeling in Color with UML: Enterprise Components and Process" by Coad, Lefebvre and De Luca [Coad 99].
Use of these sticky notes allows you to model in color even when you are working on paper or on a wall with a facilitated group.
The colors on the analysis or domain model, show us clearly how many classes of each type are involved and what behaviour we can expect.
www.uidesign.net /1999/papers/UML_UI.html#Strategy2   (7693 words)

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