Help: distance between hole and particle's surface

Posted by Josep M. Lanau on Jun 27, 2008; 8:20am
URL: http://imagej.273.s1.nabble.com/Help-distance-between-hole-and-particle-s-surface-tp3695734.html

Hi everyone,

I am dealing with particles with a single hole. I am trying to measure the
shortest distance between the hole surface and the particle surface, but I
don’t manage to calculate it.

I have tried by programming a macro  loop where the hole is selected,
enlarged a pixel, and measured again, until the hole touches the particle
surface and the particle becomes solid. The number of iterations should
have been the shortest distance. But pixels are squared, so the growing
hole tends to become a square shape, and therefore the procedure is not
valid.

I have no idea about how to measure that distance. Any tool or idea you may
have will be kindly welcome.
Thank you in advance.

Josep M.