Chris Wheat wrote: "I'm looking for free software for a PC that can take
a digital photograph of a butterfly wing, allow me to select different
points on the wing, as well as a calibrated length, then will calculate
the distance among the points as I choose. Hopefully this would be
saved in some sort of tab delimited format."
I carry out a similar process with honey bee wings for distinguishing
races of Apis mellifera. I found modestly priced software on the net
which did the whole job for me but chose to use the free version of
CooRecorder at http://www.cybis.se/ which allows 7 wing images to be
done at a time. The images are obtained with a 35mm transparancy slide
scanner but presumably butterfly wings would require a digital camera.
I then load the output file with its x/y coordinates into a Microsoft
Excel spreadsheet where the measurements can then be tailored to one's
own needs using high school maths.
David Heaf
Wales, UK
101622 dot 2773 at compuserve dot com
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