Re: Porosity analysis on image J- Should include holes be checked or unchecked?

Posted by Michael Doube-4 on Jul 20, 2015; 8:42am
URL: http://imagej.273.s1.nabble.com/Porosity-analysis-on-image-J-Should-include-holes-be-checked-or-unchecked-tp5013634p5013641.html

Hi Shreyakanakiya,

> I want to perform porosity calculation on a CT scan image sequence of a
> rock.

Have you tried Volume Fraction and Analyse Particles in BoneJ? you might
find that 3D analysis better suits your 3D images.

http://bonej.org/volumefraction
http://bonej.org/particles

A few people have done soil and rock work with it, despite its name.

https://scholar.google.com/scholar?start=20&q=soil+OR+rock&hl=en&as_sdt=0,5&sciodt=0,5&cites=16814410598979768336&scipsc=1

Michael

 I have thresholded the images such that the pores are represented by

> black and non pores by the color white. When I use analyze particles
> *without including holes*, I get a porosity of about 69%. Whereas when I
> perform it by *including holes*, I get a porosity of 38%. I'm a little
> confused on what exactly the include holes function does. Since the pore
> spaces are essentially empty spaces/holes should I be using include holes
> function or not for accurate porosity calculation ?
>
> Kindly help me out.Thank You very much in advance.
>
>
>
> --
> View this message in context: http://imagej.1557.x6.nabble.com/Porosity-analysis-on-image-J-Should-include-holes-be-checked-or-unchecked-tp5013634.html
> Sent from the ImageJ mailing list archive at Nabble.com.
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

--
Michael Doube
BPhil BVSc PGCert(Vet Ed) PhD FHEA MRCVS
Lecturer, Comparative Biomedical Sciences
The Royal Veterinary College, University of London
London NW1 0TU
United Kingdom

[phone] (Internal: 5503)
@mdoube
[RVC Logo - link to RVC Website]<http://www.rvc.ac.uk>    [Twitter icon - link to RVC (Official) Twitter] <http://twitter.com/RoyalVetCollege>     [Facebook icon - link to RVC (Official) Facebook] <http://www.facebook.com/theRVC>     [YouTube icon - link to RVC YouTube] <http://www.youtube.com/user/RoyalVetsLondon?feature=mhee>     [Pinterest icon - link to RVC Pinterest] <http://pinterest.com/royalvetcollege/>     [Instagram icon - link to RVC Instagram] <http://instagram.com/royalvetcollege>

This message, together with any attachments, is intended for the stated addressee(s) only and may contain privileged or confidential information. Any views or opinions presented are solely those of the author and do not necessarily represent those of the Royal Veterinary College (RVC). If you are not the intended recipient, please notify the sender and be advised that you have received this message in error and that any use, dissemination, forwarding, printing, or copying is strictly prohibited. Unless stated expressly in this email, this email does not create, form part of, or vary any contractual or unilateral obligation. Email communication cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, amended, lost, destroyed, incomplete or contain viruses. Therefore, we do not accept liability for any such matters or their consequences. Communication with us by email will be taken as acceptance of the risks inherent in doing so.

--
ImageJ mailing list: http://imagej.nih.gov/ij/list.html