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

Posted by Ignacio Arganda-Carreras on
URL: http://imagej.273.s1.nabble.com/BoneJ-Analyze-Skeleton-on-Skeletons-with-32766-components-tp5009924p5009957.html

Sounds good to me!

On Wed, Oct 8, 2014 at 12:34 AM, Doube, Michael <[hidden email]> wrote:

>
>
>
> > I'm pretty sure I've used float or double for labelling (integer numeric
> values) in the past with no particular problems, but will watch out since
> Karsten's warning!
>
> Karsten is correct, integers above 2^24 (a bit more than 16 million) are
> not precisely represented by float. See e.g. this:
>
> http://www.ibm.com/developerworks/java/library/j-math2/index.html
>
> So I added a little warning to the 3D particle analyser's label image
> output, in case users are measuring this many (!!) particles in their
> image stacks (the analysis itself runs on an int[][] array so will be OK
> up to 2^31 - 1 particles, it's just the image display which uses a
> float). Perhaps a similar approach might be reasonable for Analyze
> Skeleton?
>
> Michael
>
>
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--
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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