After taking pictures of all the lichen samples and cataloging them, we were going to use this app to find the area of the lichen colonies then realized..
we never included a ruler in the photos. ooops!
Thanks to Adam we found out how to use ImageJ and zoom into the pictures. Now we can measure the slightest growth in our samples. And all we have to do is take a picture of the lichen with a ruler in the photo.
Image J is really awesome, free for all users, and could be used for anything . Please feel free to try out this app and tell me how you used it and what for. Comments are welcome and ENCOURAGED.