File:Ciecam02 luminance level adaptation factor.svg

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Summary

Description CIECAM02: log-log plot of luminance level adaptation factor and its cube root approximation, versus the luminance level of the adapting field. The axes indicate the base 10 logarithm of the quantity, so LA ranges from 10-4 to 104, while FL ranges from 10-4 to 10.
Date
Source MATLAB
Author Myself

Licensing

Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

MATLAB Code

la=logspace(-4,4)
k=1./(5*la+1)
fl=k.^4.*la+0.1*(1-k.^4).^2.*(5*la).^(1/3)
loglog(la,fl,la,0.1715*la.^(1/3))
set(gca,'XTickLabel',-4:2:4,'YTickLabel',-4:1)

If you are curious as to how I derived the 0.1715 coefficient, you need simply substitute la=1 to get k=1/6 and fl=0.1715.

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12 February 2008

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97989a6ed81886c191abe6ede9dc95f01944cf54

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Date/TimeThumbnailDimensionsUserComment
current19:15, 12 February 2008Thumbnail for version as of 19:15, 12 February 2008340 × 264 (7 KB)Adoniscikbite me #1
19:13, 12 February 2008Thumbnail for version as of 19:13, 12 February 2008476 × 540 (23 KB)AdoniscikMediawiki is starting to annoy me.
19:09, 12 February 2008Thumbnail for version as of 19:09, 12 February 2008340 × 264 (7 KB)AdoniscikPrevious upload stalled.
19:06, 12 February 2008Thumbnail for version as of 19:06, 12 February 2008340 × 264 (7 KB)AdoniscikI hope I get it now.
19:04, 12 February 2008Thumbnail for version as of 19:04, 12 February 2008340 × 264 (7 KB)AdoniscikProperly?
19:03, 12 February 2008Thumbnail for version as of 19:03, 12 February 2008400 × 400 (7 KB)AdoniscikCropped
19:01, 12 February 2008Thumbnail for version as of 19:01, 12 February 2008400 × 400 (7 KB)Adoniscik{{Information |Description=CIECAM02: log-log plot of luminance level adaptation factor and its cube root approximation, versus the luminance level of the adapting field. The axes indicate the base 10 logarithm of the quantity, so L<sub>A</sub> ranges from
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