[ECOLOG-L] how to measure area with Photoshop

[David Inouye]

My brother's been using this technique to measure area by using 
images grabbed from Google Earth.  Looks like it might work better 
for some of the areas I've been measuring by walking the perimeter 
with a hand-held GPS (Garmin) that can measure area that way.  He 
provided a link to this resource for more information about the 
technique:  http://blog.duklabs.com/?p=219

David Inouye