ukoethe/vigra — pull request #210 by hmeine (2014-10-02 10:02:41+00:00)
Title: fix LaTeX error

This fixes the Doxygen build w/ LaTeX, and makes the documentation match the code. However, I wonder whether the pi should be in the denominator instead (but also in the code)?
AFAICS, the perimeter of an area-equivalent circle would be 2*sqrt(A/pi), not (A*pi).