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May 28, 2009
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Spectral Photography by madcomputerscientist Spectral Photography by madcomputerscientist
This is what happens when a fabric dye is exposed to extreme lighting conditions. As you can see, some dyes hold up, and some colors wash out.
This is the reason for the military's NIR standards for their uniforms and gear.

Some of the more interesting items that you can see in this series of photos are:
-The 1990's standard-issue woodland camo hat and bdu jacket in the upper left has bleached completely except for the black splotches.
-The hook'n'loop patch on the front of the Flectarn jacket also has poor spectral qualities.
-The Athletic Works woodland camo wicking shirt in the lower right shows it has very little spectral stability as well.
-The scarf bleaches easily.
-The mil-spec OD Boonie hat in the upper right surprisingly also does badly.

I used a blacklight for the Ultraviolet photo, and a mix of 850nm and 940nm LEDs for the Infrared photo. All three taken with a Canon PowerShot A590 IS. Great Camera. (cheap too, I recommend it)

Download for full detail.
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:iconcolinbm1:
colinbm1 Featured By Owner Dec 3, 2012
Interesting exercise, thanks for showing :D
Col
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:iconbomberdud:
BomberDud Featured By Owner Jan 14, 2011  Student Photographer
Cool Story Bro! I made a test recently with a M1 Helmet replica, a woodland bandana and a woodland jacket, the helmet and the bandana were easy to spot
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:iconmadcomputerscientist:
madcomputerscientist Featured By Owner Jan 17, 2011  Professional Artist
Interesting. Any pics?
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:iconbomberdud:
BomberDud Featured By Owner Feb 3, 2011  Student Photographer
I haven't uploaded any yet
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:icontounushi:
Tounushi Featured By Owner Nov 24, 2010
Mind if I use this in a college project?
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:iconmadcomputerscientist:
madcomputerscientist Featured By Owner Nov 29, 2010  Professional Artist
I don't mind at all, glad you asked!
Interested in seeing what you have in mind. :)
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:icontounushi:
Tounushi Featured By Owner Nov 29, 2010
Sorry, you were too late to respond. I returned it today. I made due with an alternative image, though...

Still, THX.
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:iconmadcomputerscientist:
madcomputerscientist Featured By Owner Nov 30, 2010  Professional Artist
Oh, sorry! ^^;
I will try to be quicker at responding!

Still, I'm interested, what was the project about?
(also, to add to the confusion, I misread your question to say collage, lol)
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:icontounushi:
Tounushi Featured By Owner Mar 27, 2010
One can truly see the effectiveness of the leibermuster.
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:iconmadcomputerscientist:
madcomputerscientist Featured By Owner Mar 27, 2010  Professional Artist
Well, it does seem to have been printed with techniques that retained most of the contrast between the colors throughout the tested wavelengths. (except for the brown and green, which blended together) The red swaps value with the green/brown mix in the infrared photo, but it still manages to retain its pattern.

Now this isn't determining much about its effectiveness in environment though. That's a different test. (That I hope to do soon using a different technique)
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