[Insight-users] Select one lable of interest among several labels

[Richard Beare]

Other options include BinaryThresholdImageFilter (for selecting just
one, or a range of labels) and ChangeLabelImageFilter, if you use it
to change some labels to zero.

2011/8/22 Gaëtan Lehmann <gaetan.lehmann at jouy.inra.fr>:
>
> Le 10 août 11 à 14:55, David Doria a écrit :
>
>> On Wed, Aug 10, 2011 at 8:34 AM, Abayiz <abayiz at yahoo.com> wrote:
>>>
>>> Hello,
>>>
>>> In my current 3D data, there are several labels generated by
>>> "ConnectComponentImageFilter". Right now, I want to just keep one of them,
>>> and ignore/delete the other unwanted labels. How can I do this? I've read
>>> something about the "itkLableMaskImageFilter" and
>>> "itkLabelMapToBinaryImageFilter", but cannot figure out how to use them.
>>>
>>>
>>> Examples would be very appreciated. Many thanks in advance.
>>
>> I have put many examples of LabelMap operations here:
>>
>>
>> http://www.itk.org/Wiki/ITK/Examples#Blob_Detection.2C_Labeling.2C_and_Properties
>>
>> You may be interested in how to:
>>
>> Iteratively process each label:
>>
>> http://www.itk.org/Wiki/ITK/Examples/ImageProcessing/ObjectByObjectLabelMapFilter
>>
>> Remove labels based on shape properties:
>>
>> http://www.itk.org/Wiki/ITK/Examples/ImageProcessing/ShapeOpeningLabelMapFilter
>>
>> I just added this one:
>>
>> http://www.itk.org/Wiki/ITK/Examples/ImageProcessing/ManuallyRemovingLabels
>>
>> which I believe is exactly what you're looking to do here.
>
>
> There is also the LabelSelectionLabelMapFilter for this task. Its primary
> role is to select some label objects based on their label, but the other
> label objects - the removed ones - are copied to the second output.
> So if you pass a set of label to this filter, and continue the pipeline by
> using
>
>  selection->GetOutput( 1 )
>
> instead of
>
>  selection->GetOutput()
>
> then the output label map contain all the objects in the input label map
> excepted the ones with the label passed to that filter.
>
> 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://mima2.jouy.inra.fr  http://www.itk.org
> http://www.bepo.fr
>
>
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