XYZ2SRGB
Name
XYZ2SRGB
Purpose
This function converts a provided set of tristimulus values to
sRGB. The tristimulus values are assumed to be in the range
[0,1] and computed with illuminant D65. A non-linearity adjustment
for the monitor response is applied (gamma = 2.2).
(Source: http://www.brucelindbloom.com)
| R-linear | | 3.2404542 -1.5371385 -0.4985314 | | X |
| G-linear | = | -0.9692660 1.8760108 0.0415560 | * | Y |
| B-linear | | 0.0556434 -0.2040259 1.0572252 | | Z |
For [R-linear,G-linear,B-linear] <= 0.0031308
sRGB = 12.92 * sRGB
For [R-linear,G-linear,B-linear] > 0.0031308
sRGB = ( 1 + a ) * sRGB^( 1 / 2.4 ) - a
Category
Color Science.
Calling Sequence
Result = XYZ2SRGB( xyz )
Inputs
xyz
A 3-element vector or 3xn array of XYZ tristimulus values
(each in the range [0,1]). The tristimulus values are
assumed to have been computed using illuminant D65.
Keyword Parameters
None
Return Value
Result is either a 3-element vector or a 3xn array that contains
the computed sRGB color values
Side Effects
None
Modification History
Written by: Carl Salvaggio
January, 2008 Original code
February 2010 Modified with more precise coefficients
July 2010 Corrected error with sRGB values and threshhold
Disclaimer
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or merchantability. The author and/or distributors of this source code may
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whether to use this source code.
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whatsoever. Because of the diversity of conditions and hardware under which
this source code may be used, no warranty of fitness for a particular purpose
is offered. The user is advised to test the source code thoroughly before
relying on it. The user must assume the entire risk of using the source code.