Re: distance between each voxel and centroid of 3D object

Posted by Robert Dougherty on Mar 26, 2009; 5:17am
URL: http://imagej.273.s1.nabble.com/distance-between-each-voxel-and-centroid-of-3D-object-tp3693182p3693184.html

The Local Thickness plugin on my site can produce the 3D distance map,  
AKA EDT.

Bob

On Mar 25, 2009, at 8:45 PM, David Webster wrote:

> If there is a way to produce a 3D distance map, then you can apply  
> that to a
> 3D "image" of just the centroids. I don't know if this can be produced
> automatically. You may need to write a macro. Check the ImageJ lists  
> of
> macros and plugins for the distance transform, You might want to  
> check the
> FIJI wiki as well.
>
> David Webster
>
> On Wed, Mar 25, 2009 at 7:12 PM, Kotaro Hiraoka <
> [hidden email]> wrote:
>
>> Dear users,
>>
>> Hi, I'm a new user of ImageJ.
>>
>> I'm now trying to measure the mean of distance between each  
>> thresholded
>> voxel of a 3D object in stacked MRI images and the centroid of the  
>> object.
>> The 3D object is hollow and the number of thresholded voxels is about
>> 400000.
>> I could determine the (x,y,z) of the centroid using plugin 'Object
>> Counter3D'.
>> However, I don't know what to do next.
>> Would you tell me how to complete the measurement? Is there a plugin
>> appropriate for the measurement?
>>
>> Thank you very much in advance.
>>
>> Kotaro Hiraoka
>> Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku
>> University Graduate School of Medicine, Sendai, Japan
>>

Robert Dougherty, Ph.D.
President, OptiNav, Inc.
4176 148th Ave. NE
Redmond, WA 98052
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FAX [phone]
www.optinav.com
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