[Insight-users] Still struggling with extracting information about objects resulting from a segmentation

[Gaëtan Lehmann]

Le 11 mars 10 à 22:10, Neal R. Harvey a écrit :

> Gaëtan Lehmann wrote:
>>
>> Le 11 mars 10 à 17:54, Neal R. Harvey a écrit :
>>
>>> I would hope that the value returned from labelMap- 
>>> >GetNumberOfLabelObjects() would
>>> be the same as the maximum value of the watershed segmented image.
>>
>>
>> The watershed doesn't produce consecutive labels, so this won't be  
>> true.
>> The greatest label in the watershed output is likely to be a lot  
>> greater than the actual number of objects.
>   Yep, I had just remembered that. Doh! I am assuming that I can use  
> the RelabelComponentImageFilter to
>   make the labels consecutive, as this would make things a lot easier.

You can also use RelabelLabelMapFilter, to relabel the label objects  
instead of relabelling all the pixel in the labeled image.

>
>   Thanks a lot for the advice. I will try your other suggestion and  
> see if I can get that working.
>
>   Cheers
>
>   Harve

Gaëtan

-- 
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  http://www.itk.org
http://www.mandriva.org  http://www.bepo.fr

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