File:Black-body-in-mireds-reversed.png

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    Summary

    Description
    English: Black body spectrum (sRGB): 1-1000 mired (1MK down to 1000K)
    Date
    Source Own work
    Author Adoniscik
    Other versions
    File:Black-body-in-mireds-reversed.svg is a vector version of this file. It should be used in place of this PNG file when not inferior.
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    Licensing

    Public domain This work has been released into the public domain by its author, Adoniscik. This applies worldwide.
    In some countries this may not be legally possible; if so:
    Adoniscik grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

    Mathlab code

    MIREDS=1:1000;      % 1MK to 1000K; don't use zero!
c2=1.4387752;       % second radiation constant
[LAMBDA, XFCN, YFCN, ZFCN]=colorMatchFcn('Judd_Vos');
[lambda,mireds]=meshgrid(LAMBDA,MIREDS);
spd=lambda.^(-5)./(exp(c2.*mireds*10./lambda)-1);
pl_XYZ=spd*[XFCN' YFCN' ZFCN'];
norm_XYZ=pl_XYZ./(max(pl_XYZ,[],2)*[1 1 1]); % max trick
mean_XYZ=norm_XYZ*0.5./(mean(norm_XYZ,2)*[1 1 1]); % even the brightness
pl_srgb=applycform(mean_XYZ,makecform('xyz2srgb'));
colors(:,:,1)=pl_srgb(:,1)';
colors(:,:,2)=pl_srgb(:,2)';
colors(:,:,3)=pl_srgb(:,3)';
image(colors); 
set(gca,'XTickLabel',100:100:1000);   % counterintuitive...
set(gca,'YTick',[]);


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    8 April 2008

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    Date/TimeThumbnailDimensionsUserComment
    current23:49, 9 April 2008Thumbnail for version as of 23:49, 9 April 20081,173 × 201 (6 KB)wikimediacommons>Adoniscik{{Information |Description=Black body spectrum (sRGB): 1-1000 mired (1MK down to 1000K) |Source=self-made |Date=2008-04-08 |Author=Adoniscik |Permission= |other_versions=image:Black-body-in-mireds.png }} Category:Black body

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