[Insight-users] Labeled region center of mass?

[Gaëtan Lehmann]

Hi,

I might be biased, because I made that contribution, but I would use  
the the class BinaryImageToStatisticsLabelMapFilter from http:// 
hdl.handle.net/1926/584 , to get (I think) all the informations that  
you need (and much more) in a single filter.

Gaëtan


Le 29 nov. 07 à 23:42, Bill Lorensen a écrit :

> MC,
>
> Instead of the bounding box, it might be better to use the GetRegion 
> () method of LabelStatisticsImageFilter. This will save you from  
> having to create a region from the bounding box.
>
> Bill
>
> On Nov 29, 2007 5:11 PM, Mengchen Zhu <acidwind at gmail.com> wrote:
> Hi everyone,
>
> I am now trying to extract the regional centers of mass of a  
> labeled image (output of ConnectedComponentImageFilter and  
> RelabelComponentImageFilter). Are there any "direct" ways of doing  
> this?
>
> My current plan is to first calculate the bounding boxes of each  
> region using LabelStatisticsImageFilter; and then either manually  
> compute the CoM, or "convert" the region inside the bounding box to  
> image, and use ImageMomentsCalculator to calculate the CoM. I don't  
> know how to do the conversion exactly for the 2nd method. The 2nd  
> method is favored somehow because I might need other attributes  
> from ImageMomentsCalculator such as principal axes.
>
> The context: I am currently working on registration using ICP; the  
> extracted centers of mass will serve as inputs to the registration  
> process.
>
> Your comments are welcomed. Thanks.
>
> Regards,
> MC
>
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-- 
Gaëtan Lehmann
Biologie du Développement et de la Reproduction
INRA de Jouy-en-Josas (France)
tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
http://voxel.jouy.inra.fr




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