Earth Mover's Distance computation in 3D

Question

Is there a package out there that can compute the Earth Mover's Distance on two 3D grid inputs? Barring that, is there some example code or algorithm description for computing it efficiently?

Answer 1

There's an implementation in in OpenCV. There's a section on EMD halfway down.:

http://www.seas.upenn.edu/~bensapp/opencvdocs/ref/opencvref_cv.htm