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Old October 13th, 2008, 12:06 PM
echo80 echo80 is offline
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Calculate % cover of a background colour

I have taken pictures of tree canopy cover where I pointed the camera straight up and took pictures of tree canopy. What I need to do with these pictures is assess the percentage of the photo that is not leaves or wood (ie. the total area of the photo containing blue sky).

I am hoping to have an accuracy within 5%

Is this possible with GIMP? I have been able to isolate the desired portion of the photo using the fuzzy select tool, but now I don't know how to translate the highlighted portion into an area percentage.

Any ideas?

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