hull of a set of particles

[Josep M. Lanau]

Hello, all.

I am looking for a plugin or macro that draws and/or measures a convex hull
of all the particles in a image. I mean a single hull that includes all
particles in the image.

The plugins I have found so far require a single particle selection, or
does measure the hull on each particle separatedly.

Any advice on this will be helpful. Thank you very much in advance!

Josep M. Lanau

[Gabriel Landini]

On Tuesday 14 April 2009, Josep M. wrote:

> I am looking for a plugin or macro that draws and/or measures a convex hull
> of all the particles in a image. I mean a single hull that includes all
> particles in the image.
>
> The plugins I have found so far require a single particle selection, or
> does measure the hull on each particle separatedly.

Convex_Hull_Plus (java & class files) This plugin calculates the convex hull
and the minimum bounding circle of a binary set (formed by white or black
particles).
 The Convex Hull is the smallest convex polygon that contains the set. The
plugin uses the 'wrapping around' (Graham scan) algorithm.

http://www.dentistry.bham.ac.uk/landinig/software/software.html

[Josep M. Lanau]

Thank you! I'll try.

JM