File:CIExy1931.png

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (1,140 × 1,260 pixels, file size: 327 KB, MIME type: image/png)

Captions

Captions

Add a one-line explanation of what this file represents
File:CIExy1931.svg is a vector version of this file. It should be used in place of this PNG file when not inferior.
File:CIExy1931.png → File:CIExy1931.svg
For more information, see Help:SVG.
In other languages
Alemannisch ∙ Bahasa Indonesia ∙ Bahasa Melayu ∙ British English ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ Esperanto ∙ euskara ∙ français ∙ Frysk ∙ galego ∙ hrvatski ∙ Ido ∙ italiano ∙ lietuvių ∙ magyar ∙ Nederlands ∙ norsk bokmål ∙ norsk nynorsk ∙ occitan ∙ Plattdüütsch ∙ polski ∙ português ∙ português do Brasil ∙ română ∙ Scots ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ suomi ∙ svenska ∙ Tiếng Việt ∙ Türkçe ∙ vèneto ∙ Ελληνικά ∙ беларуская (тарашкевіца) ∙ български ∙ македонски ∙ нохчийн ∙ русский ∙ српски / srpski ∙ татарча/tatarça ∙ українська ∙ ქართული ∙ հայերեն ∙ বাংলা ∙ தமிழ் ∙ മലയാളം ∙ ไทย ∙ 한국어 ∙ 日本語 ∙ 简体中文 ∙ 繁體中文 ∙ עברית ∙ العربية ∙ فارسی ∙ +/−
New SVG image

Description
English: CIE 1931 xy chromaticity diagram.

The colors for this diagram were generated using the RGB color space in Adobe Photoshop. The transformation from xy chromaticity coordinates was done using the sRGB color space specification on the tristimulus values, then multiplying by a constant so that one of the R, G, or B values was maximized. Assuming that one's monitor converts Adobe Photoshop RGB according to the sRGB color space (probably a good assumption) then, within the sRGB gamut, the chromaticities are correct, but are incorrect outside the gamut.

The process of maximizing the value of R, G, or B results in a distinct 3-pointed star in the diagram, centered at the D65 white point. This is because, although the chromaticities are correct, the luminosities (brightness values) are not equal across the diagram. If the luminosities were all made equal, then the entire diagram would be rather dark, since pure blue has a low luminosity. Any attempt to equalize luminosity to remove the star will reduce the overall luminosity of the diagram, and the star will not completely disappear until the diagram is very dark. Alternatively, we could blur the colors to get rid of the star, which would give incorrect chromaticities. I have opted for correct chromaticities at maximum brightness, thus the presence of the star.
Date 21 June 2005 (original upload date)
Source Own work
Author PAR
Permission
(Reusing this file)		 Public domain
Other versions
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current07:17, 21 June 2005Thumbnail for version as of 07:17, 21 June 20051,140 × 1,260 (327 KB)PAR~commonswiki (talk | contribs) CIE 1931 xy chromaticity diagram

You cannot overwrite this file.

File usage on other wikis

The following other wikis use this file:

View more global usage of this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:CIExy1931.png&oldid=843041286"