We implemented this as part of the JCS Conflation Suite (which was the
reason JUMP was originally developed!)
There's a whole body of theory around shape recognition - much of which
is very complicated and hard to implement/use. The circularity ratio is
one of the more usable techniques.
Ma
Hi Larry,
I don't know if this ratio is often used in geomatics, but I implemented
it in a plugin available on the site :
https://sourceforge.net/projects/jump-pilot/files/p_%20More%20Plugins/OJ%20graph%20toolbox/
I called it circularity and defined it as an integer (where 100 means
perfect c
I had a need to classify polygon shapes into general categories such as
roads and buildings, and I though it might be possible to use a "thinness"
factor calculated using the area and perimeter. After fooling around with
it for a while and not getting the answer, I goggled and found the following
