[Insight-users] Remove binary objects on image border

[Dan Mueller]

Hi all,

Thanks for your suggestions, most helpful.

Cheers, Dan

2009/3/3 Richard Beare <richard.beare at gmail.com>:
> The other common approach, which may be faster if the rest of your
> pipeline is appropriate, is to look at label statistics. If you've
> produced a mask and you're going to do a connected component analysis
> anyway (for example to count objects or measure per object
> brightness), then you can just look at object bounding boxes and
> ignore those that touch the boundary. If you want to delete the
> objects then you can use the ChangeLabelImageFilter
>
> On Mon, Mar 2, 2009 at 9:58 PM, Gaëtan Lehmann
> <gaetan.lehmann at jouy.inra.fr> wrote:
>>
>> Le 2 mars 09 à 08:48, Dan Mueller a écrit :
>>
>>> Hi all,
>>>
>>> I need to remove binary objects which lie on the image border. For
>>> example, I have a binary image with two circles: one lies wholly in
>>> the image, one is slightly truncated by the border of the image. I
>>> want to remove the truncated circle, leaving only the whole one.
>>>
>>> Obviously I can perform a connected region growing using each border
>>> pixel as a seed, and then inverse mask the input image with the
>>> result.
>>>
>>> However, I'm sure I've seen a filter that already does this, perhaps
>>> on the Insight Journal...? Does this filter already exist, or do I
>>> need to make it myself?
>>
>>
>> Hi Dan,
>>
>> The BinaryShapeOpeningImageFilter with the SizeOnBorder attribute is doing
>> exactly that - and even a bit more, because you can choose how many pixels
>> must touch the border to remove the object.
>> It is available in http://insight-journal.org/browse/publication/176 .
>> The last sources are available at
>> http://voxel.jouy.inra.fr/darcs/contrib-itk/binaryAttributeMorphology/binaryAttributeMorphology.tar.gz
>>
>> Regards,
>>
>> 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.mandriva.org
>> http://www.itk.org  http://www.clavier-dvorak.org
>>
>>
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>