Convex Hull in 3D - Open and Closed Porosity

Posted by Sidnei Paciornik on May 25, 2015; 9:14pm
URL: http://imagej.273.s1.nabble.com/Convex-Hull-in-3D-Open-and-Closed-Porosity-tp5012939.html

Dear All

Is there any plugin in ImageJ or FIJI to obtain the 3D Convex Hull of a 3D
object?

I am actually trying to discriminate open (connected) and closed
(unconnected) pores.

So my rationale was:
1) Segment the object and fill the pores.These would be the closed pores.
2) Obtain the 3D hull and fill the pores. Now the open pores would be
closed by the convex hull and would also be filled, along with the previous
closed pore.
3) Subtract to obtain just the open pores.

Of course, when I mention "fill holes" above I have to consider 2D or 3D
filling, which brings me to the other question:
Is there a 3D fill holes operator in ImageJ/FIJI?

Several 3D programs (e.g. CTan, Avizo, ORS) have some form to discriminate
open and closed porosity.

Any suggestions?

Thank you !

Prof. Sidnei Paciornik
Grupo de Análise de Imagens e Microscopia Digital
DEQM - Departamento de Engenharia de Química e de Materiais
PUC-Rio <http://www.puc-rio.br/>
Rua Marquês de São Vicente 225
Prédio Leme, Sala 501L
Gávea - Rio de Janeiro - RJ
22451-900 - Brasil
tel: [phone]

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