Re: Fractal_Box_Counter

Posted by André Tchiftchibachian on Aug 24, 2006; 1:04pm
URL: http://imagej.273.s1.nabble.com/Fractal-Box-Counter-tp3701765p3701767.html

Hi Gabriel,

Thank you for your help. Even more, your last remark raised up some  
interrogation...
I was intending to make some approximation concerning the projection and
the longitudinal cut: a kind of assumption.
First, I go to implement some trials..
So long

André

Gabriel Landini wrote:

>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
>
>  
>