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

[Gaëtan Lehmann]

Le 11 mars 10 à 22:35, Neal R. Harvey a écrit :

> Gaëtan Lehmann wrote:
>>
>> 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.
>   OK. Thanks again. I will try that. Also, how does one turn on the  
> computation of the perimeter, Feret diameter, etc.?


Your code looks correct to me.
Can you give the exact error message you get?

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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