[Insight-users] StatisticsOnImage

[Gaetan Lehmann]

On Thu, 22 Jun 2006 14:07:47 +0200, Stefan Klein <stefan at isi.uu.nl> wrote:

> Hi Gaetan,
>
> Thanks for your reply. I missed the LabelStatisticsImageFilter. It does
> indeed exactly what I want!
>
> I do not fully understand your first remark. Do you mean that using a
> spatial object as a mask is not
> as efficient as using a label image? Or do you mean that filters  
> shouldn't
> support masks in general, because it makes them slow, and, that actually
> you even would like to remove mask support for the
> ConnectedComponentImageFilter?

I would just say that, if it can be done another way, the mask support  
should not be integrated in a filter, not because it make them slow, but  
rather because it make the task of improving their performance with better  
algorithm more difficult
The ConnectedComponenImageFilter done by Richard Beare is a good example  
http://www.insight-journal.org/InsightJournalManager/view_reviews.php?back=publications.php%3Fjournalid%3D4%26order%3D%26revision_display%3D&pubid=75

Gaetan


>
> Regards,
> Stefan.
>
>
>
>> IMHO, the mask support should not be added to this class - the  
>> experience
>> show that it is much difficult to implement more efficient algorithm  
>> with
>> that feature, like for the ConnectedComponentImageFilter. Why not use
>> LabelStatisticsImageFilter to do that job ?
>>
>> Gaetan
>>
>>
>>
>> --
>> 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
>



-- 
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