Image:Ciecam02 luminance level adaptation factor.svg

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Ciecam02_luminance_level_adaptation_factor.svg (SVG file, nominally 340 × 264 pixels, file size: 7 KB)

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[edit] 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.

Source

MATLAB

Date

2008-02-12

Author

Myself

Permission
(Reusing this image)

see below


[edit] Licensing

Public domain I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.


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[edit] 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.

File history

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

Date/TimeDimensionsUserComment
current19:15, 12 February 2008340×264 (7 KB)Adoniscik (bite me #1)
19:13, 12 February 2008476×540 (23 KB)Adoniscik (Mediawiki is starting to annoy me.)
19:09, 12 February 2008340×264 (7 KB)Adoniscik (Previous upload stalled.)
19:06, 12 February 2008340×264 (7 KB)Adoniscik (I hope I get it now.)
19:04, 12 February 2008340×264 (7 KB)Adoniscik (Properly?)
19:03, 12 February 2008400×400 (7 KB)Adoniscik (Cropped)
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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