dilation in 3D

Posted by Jonathan Leong on Apr 16, 2009; 11:49pm
URL: http://imagej.273.s1.nabble.com/dilation-in-3D-tp3692910.html

hello imagej users,

i am trying to perform a dilation on an image stack. the dilate and maximum
features built into imagej are able to do what i want, but only in 2D. that
is, they take the maximum value in an n-pixel radius - but within a given
image plane. is there a way to do this with an n-pixel radius in the entire
volume?

ideally, i would want to be able to specify the distance between slices
(i.e. the conversion from z steps to pixels), though i would be happy to
start with a macro/plugin in which i could simply dilate 3-pixels and that
would give me a 3-pixel radius spanning 3 slices. in fact, this is 1-pixel
=1 z-step is approximately correct.

i have done a bit of searching around and found the VTK plugins, but i am
having trouble getting these to work. they are quite old, though, so my hope
is that there is something newer that is native to imagej. does anyone have
any ideas?

thanks,

jonathan