Re: histogram of a surrounding sphere

Posted by Pablo Manuel Jais on Feb 21, 2009; 4:16pm
URL: http://imagej.273.s1.nabble.com/histogram-of-a-surrounding-sphere-tp3693546p3693558.html

On Saturday 21 February 2009, m000an ZH wrote:
> Hi,In a 3D 8-bit stack (comes from tomography experiment), I would like
> to have for each point the histogram of the grey scale value of the
> surrounding voxels contained in a sphere (of 5 voxel radius for example)
> centered on the point.Any help is warmly welcome.Thank you
> Milan

That looks like a (non-trivial) modification of the Hough transform for
circles. There's a plugin for that in
http://rsbweb.nih.gov/ij/plugins/hough-circles.html
However, that's only for 2D binary images, so it might only be useful as a
guide.

I hope that's useful,
  Pablo