Re: Fractal_Box_Counter

Posted by Gabriel Landini on Aug 24, 2006; 11:46am
URL: http://imagej.273.s1.nabble.com/Fractal-Box-Counter-tp3701765p3701766.html

On Thursday 24 August 2006 10:03, André Tchiftchibachian wrote:
> Could anyone conservant with the plugin Fractal_Box_Counter, tell me if
> it concerns hollow contour or if it may be used for full inside countour

The box counting can analyse the contour (surface fractal) or the whole set
(mass fractal). It depends what you submit to the procedure.

You can test this easily by analysing a straight line or hollow
rectangle/circle (which should be near D~1.0 and a filled image D~2.0).

Which one is relevant? It depends on the data, not the algorithm. It may be
one (surface or mass) or both or none. There is no strict relation between
the surface and the mass fractal dimension, they are different things, but
sometimes they may coincide. It is therefore important to specify which one
is being estimated.

Be aware that to estimate the surface dimension of a 3D object, you need to
analyse a 2D cut through the object (the so-called zeroset), not a projected
outline.

I hope it helps.

Gabriel