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| {{About|an obsolete version of the [[International Commission on Illumination|CIE]] [[color space]]|the video color model|YUV}}
| | It involves expertise and knowledge of various tools and technologies used for creating websites. It is thus, on these grounds that compel various web service provider companies to integrate the same in their packages too. When you have virtually any inquiries about where and how to work with [http://www.lognip.com/HWalter wordpress backup plugin], you'll be able to email us with our web site. Should you go with simple HTML or use a platform like Wordpress. 2- Ask for the designs and graphics that will be provided along with the Word - Press theme. The number of options offered here is overwhelming, but once I took the time to begin to review the video training, I was amazed at how easy it was to create a squeeze page and a membership site. <br><br>Most Word - Press web developers can provide quality CMS website solutions and they price their services at reasonable rates. But as expected the level of support you get with them can be hit or miss based on the developer's free time and desire. This plugin allows a blogger get more Facebook fans on the related fan page. From my very own experiences, I will let you know why you should choose WPZOOM Live journal templates. But in case you want some theme or plugin in sync with your business needs, it is advisable that you must seek some professional help. <br><br>It is also popular because willing surrogates,as well as egg and sperm donors,are plentiful. Word - Press has different exciting features including a plug-in architecture with a templating system. We can active Akismet from wp-admin > Plugins > Installed Plugins. Provide the best and updated information to the web searchers and make use of these wonderful free themes and create beautiful websites. Customization of web layout is easy due to the availability of huge selection of templates. <br><br>Numerous bloggers are utilizing Word - Press and with good reason. But the Joomla was created as the CMS over years of hard work. Next you'll go by way of to your simple Word - Press site. A whole lot worse, your site will likely be useless as well as your merchandise won't sell if no one has the endurance to wait for the web pages to load. Now all you have to do is log into your Word - Press site making use of the very same username and password that you initially had in your previous site. <br><br>Instead, you can easily just include it with our bodies integration field in e - Panel. s ability to use different themes and skins known as Word - Press Templates or Themes. The days of spending a lot of time and money to have a website built are long gone. Change the entire appearance of you blog using themes with one click. Article Source: Hostgator discount coupons for your Wordpress site here. |
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| [[File:Planckian-locus.png|thumb|400px|The Planckian locus on the MacAdam {{nobr|(''u'', ''v'')}} chromaticity diagram. The normals are lines of equal correlated color temperature.]]
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| The '''CIE 1960 color space''' ("CIE 1960 UCS", variously expanded ''Uniform Color Space'', ''Uniform Color Scale'', ''Uniform Chromaticity Scale'', ''Uniform Chromaticity Space'') is another name for the {{nobr|(''u'', ''v'')}} [[chromaticity]] space devised by [[David MacAdam]].<ref>{{cite journal|authorlink=David MacAdam|first=David Lewis|last=MacAdam|title=Projective transformations of I.C.I. color specifications| journal=[[JOSA]]|volume=27|issue=8|date=August 1937|pages=294–299| url=http://www.opticsinfobase.org/abstract.cfm?URI=josa-27-8-294|doi=10.1364/JOSA.27.000294}}</ref>
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| The CIE 1960 UCS does not define a [[luminance (relative)|luminance]] or [[lightness (color)|lightness]] component, but the ''Y'' [[tristimulus value]] of the [[XYZ color space]] or a lightness index similar to ''W''* of the [[CIE 1964 color space]] are sometimes used.<ref>{{cite book|title=Digital Pictures: Representation, Compression, and Standards|publisher=Springer|isbn=0-306-42195-X|author=Arun N. Netravali, Barry G. Haskell|authorlink=Arun Netravali|edition=2E|page=288| url=http://books.google.com/?id=-TXYfZrCBuQC&pg=PA288&dq=Riemannian+munsell|year=1986}}</ref>
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| Today, the CIE 1960 UCS is mostly used to calculate [[correlated color temperature]], where the [[isotherm (contour line)|isotherm]]al lines are perpendicular to the [[Planckian locus]]. As a uniform chromaticity space, it has been superseded by the [[CIELUV|CIE 1976 UCS]].
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| ==Background==
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| Judd determined that a more uniform [[color space]] could be found by a simple [[projective transformation]] of the [[CIEXYZ]] tristimulus values:<ref>{{cite journal|title=A Maxwell Triangle Yielding Uniform Chromaticity Scales|journal=[[JOSA]]|first=Deane B.|last=Judd|volume=25|issue=1|date=January 1935|pages=24–35| url=http://www.opticsinfobase.org/abstract.cfm?URI=josa-25-1-24| quote=An important application of this coordinate system is its use in finding from any series of colors the one most resembling a neighboring color of the same brilliance, for example, the finding of the nearest color temperature for a neighboring non-Planckian stimulus. The method is to draw the shortest line from the point representing the non-Planckian stimulus to the Planckian locus.|doi=10.1364/JOSA.25.000024}}</ref>
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| <math>\begin{pmatrix} ''R'' \\ ''G'' \\ ''B'' \end{pmatrix} = \begin{pmatrix} 3.1956 & 2.4478 & -0.1434 \\ -2.5455 & 7.0492 & 0.9963 \\ 0.0000 & 0.0000 & 1.0000 \end{pmatrix} \begin{pmatrix} X \\ Y \\ Z \end{pmatrix}</math> | |
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| (Note: What we have called "G" and "B" here are not the G and B of the [[CIE 1931 color space]] and in fact are "colors" that do not exist at all.)
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| Judd was the first to employ this type of transformation, and many others were to follow. Converting this RGB space to chromaticities one finds<ref>{{cite journal|journal=[[JOSA]]|title=Quantitative data and methods for colorimetry|volume=34|issue=11|date=November 1944|author=OSA Committee on Colorimetry| pages=633–688|url=http://www.opticsinfobase.org/abstract.cfm?URI=josa-34-11-633}} (recommended reading)</ref>{{Clarify|date=August 2013|post-text=The following formulae do not agree with u=R/(R+G+B) and v=G/(R+G+B)}}
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| [[File:Judd's-UCS.png|thumb|400px|Judd's UCS, with the Planckian locus and the isotherms from 1,000K to 10,000K, perpendicular to the locus. Judd then translated these isotherms back into the CIEXYZ color space. (The colors used in this illustration are illustrative only and do not correspond to the true colors represented by the respective points.)]]
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| <math>u=\frac{0.4661x+0.1593y}{y-0.15735x+0.2424}</math> | |
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| <math>v=\frac{0.6581y}{y-0.15735x+0.2424}</math>
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| or equivalently (for comparative purposes with the equations to follow):
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| <math>u=\frac{5.5932x+1.9116y}{12y-1.882x+2.9088}</math>
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| <math>v=\frac{7.8972y}{12y-1.882x+2.9088}</math>
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| MacAdam simplified Judd's UCS for computational purposes:
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| <math>u = \frac{4x}{12y - 2x + 3}</math>
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| <math>v = \frac{6y}{12y - 2x + 3}</math>
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| The Colorimetry committee of the CIE considered MacAdam's proposal at its 14th Session in Brussels for use in situations where more perceptual uniformity was desired than the (x,y) chromaticity space,<ref>{{cite journal| url=http://www.opticsinfobase.org/abstract.cfm?URI=josa-50-1-87| title=Brussels Session of the International Commission on Illumination|authorlink=International Commission on Illumination|journal=[[JOSA]]|volume=50|issue=1|date=January 1960|pages=89–90|author=CIE|quote=The use of the following chromaticity diagram is provisionally recommended whenever a diagram yielding color spacing perceptually more nearly uniform than the (xy) diagram is desired. The chromaticity diagram is produced by plotting {{nobr|4''X''/(''X'' + 15''Y'' + 3''Z'')}} as abscissa and {{nobr|6''Y''/(''X'' + 15''Y'' + 3''Z'')}} as ordinate, in which ''X'', ''Y'', and ''Z'' are the tristimulus values corresponding to the 1931 CIE Standard Observer and Coordinate System.}}</ref> and officially adopted it as the standard UCS the next year.<ref>{{Cite web|location=Brussels|year=1960|author=CIE|authorlink=International Commission on Illumination|contribution=Official Recommendations|page=36|series=14th Session|title=Publication No. 004: Proceedings of the CIE Session 1959 in Bruxelles|volume=A|url=http://cie.kee.hu/newcie/main/withdrawn.html}}</ref>
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| ==Relation to CIEXYZ==
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| [[File:CIE UVW Diagramme de chromaticité 002.png|thumb|right|400px|The CIE 1960 UCS, also known as the MacAdam (u,v) chromaticity diagram. Colors outside the colored triangle cannot be represented on most computer screens.]]
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| U, V, and W can be found from X, Y, and Z using:
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| :<math>U= \textstyle{\frac{2}{3}}X</math>
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| :<math>V=Y\,</math>
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| :<math>W=\textstyle{\frac{1}{2}}(-X+3Y+Z)</math>
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| Going the other way:
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| :<math>X=\textstyle{\frac 32}U</math>
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| :<math>Y=V</math>
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| :<math>Z=\textstyle{\frac{3}{2}}U-3V+2W</math>
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| We then find the [[chromaticity]] variables as:
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| :<math>u =\frac U{U+V+W}= \frac{4X}{X + 15Y +3Z}</math>
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| :<math>v =\frac V{U+V+W}= \frac{6Y}{X + 15Y + 3Z}</math>
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| We can also convert from ''u'' and ''v'' to ''x'' and ''y'':
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| :<math>x = \frac{3u}{2u - 8v + 4}</math>
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| :<math>y = \frac{2v}{2u - 8v + 4}</math>
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| ==Relation to CIELUV==
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| :<math>u^\prime = u\,</math>
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| :<math>v^\prime = \textstyle{\frac{3}{2}}v\,</math>
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| ==References==
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| <references/>
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| ==External links==
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| * [http://www.efg2.com/Lab/Graphics/Colors/Chromaticity.htm Free Windows utility to generate chromaticity diagrams.] Delphi source included.
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| {{color space}}
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| [[Category:Color space]]
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