Re: BoneJ Analyze Skeleton on Skeletons with >32766 components?

Posted by karo03 on
URL: http://imagej.273.s1.nabble.com/BoneJ-Analyze-Skeleton-on-Skeletons-with-32766-components-tp5009924p5009935.html

Hi, just one shart remark to "use Float instead" for label image data!

Don't do that! For larger label numbers you will struggle around with float rounding errors, hence mislabelling problems. The latter will need more time to overcome! I don't know Java enough, but Long is much better than float.

Karsten

Am 07.10.2014 um 10:08 schrieb Ignacio Arganda-Carreras <[hidden email]>:

> Hello Simon,
>
> This limitation comes from the fact that I used a "short" image to store
> the labeled skeletons in AnalzyeSkeleton. If you have some coding
> experience you can easily create your own version of the plugin to use
> Float instead of Short pixel values. That should make the trick.
>
> In any case, I will talk to Michael Doube (BoneJ maintainer) to see if we
> also add that change to our released version.
>
> Best regards,
>
> ignacio
>
> On Mon, Oct 6, 2014 at 10:31 PM, Simon Carr <[hidden email]> wrote:
>
>> Dear All,
>>
>> I am using BoneJ to undertake pore analysis of soils and sediments, but
>> keep coming up against the Java limit of a maximum of 32,766 components.
>> Unfortunately, my samples have populations of pores to be measured in the
>> order of ~120,000 components, some of which extend right through the CT
>> volume that has been scanned. Whilst I appreciate that I can sub-sample
>> each volume into smaller pieces that bring the component number below the
>> magic number, I am aware that this is compromising the quality of the
>> analysis, because numerous large pore networks that extend as a single
>> network through the whole volume are being split into perhaps four (or
>> more) skeletons for subsequent analysis.
>>
>> Can anyone advise whether there is a way to get around the Java-imposed
>> limit on my volumes?
>>
>> Regards,
>>
>> Simon
>> _________________________________
>> Dr Simon Carr
>> School of Geography,
>> Queen Mary University of London,
>> Mile End Road, London, E1 4NS, UK.
>> t: 00 44 20 7882 2780
>> f: 00 44 20 8981 6276
>> e: [hidden email]<mailto:[hidden email]>
>> twitter: @DrSimonCarr
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>>
>
>
>
> --
> Ignacio Arganda-Carreras, Ph.D.
> Seung's lab, 46-5065
> Department of Brain and Cognitive Sciences
> Massachusetts Institute of Technology
> 43 Vassar St.
> Cambridge, MA 02139
> USA
>
> Phone: (001) 617-324-3747
> Website: http://bioweb.cnb.csic.es/~iarganda/index_EN.html
>
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