[ITK] [ITK-users] Creating a region to store LabelObjects

[Pol Monsó Purtí]

excellent! thanks.

Which method recomputes them?

2015-04-21 20:44 GMT+02:00 Gaetan Lehmann <gaetan.lehmann at gmail.com>:

> Hi,
>
> The attributes are only updated by the filters, not by the label objects,
> so you should recompute the attributes after having after moving them.
>
> Gaëtan
> Le 21 avr. 2015 19:05, "Pol Monsó Purtí" <lluna.nova at gmail.com> a écrit :
>
>> After tweaking here and there, I believe the problem was mine that I was
>> shifting the objects twice because it doesn't happen anymore.
>>
>> The Shift problem remains, thought. Shifting doesn't update the
>> labelobject attributes, so, right now, I shift the pixels _and_ then shift
>> (get,offset,set) the boundingbox, given that those are the attributes that
>> I need.
>>
>> Cheers,
>>
>> Pol
>>
>> 2015-04-21 12:29 GMT+02:00 Pol Monsó Purtí <lluna.nova at gmail.com>:
>>
>>> Hello all,
>>>
>>> related to a couple of conversations we've had here I've noticed a
>>> strange behaviour that is related to the LabelMap representation.
>>>
>>> I have two label objects
>>>
>>> bounding box1 ImageRegion (0x7fd381317888)
>>>
>>> Dimension: 3
>>>
>>> Index: [23, 40, 2]
>>>
>>> Size: [60, 71, 9]
>>>
>>>
>>> bounding box2 ImageRegion (0x7fd38131a328)
>>>
>>> Dimension: 3
>>>
>>> Index: [74, 18, 2]
>>>
>>> Size: [24, 39, 9]
>>>
>>>
>>> If I create a region of size [100, 120, 11] it should be able to store
>>> those two objects.
>>>
>>> However, (maybe) that is not the case because the objects are not drawn
>>> at slice 2 but on slice 5 when I write the output of
>>> LabelMapToLabelImageFilter. There is no exception thrown, thought.
>>>
>>> I've also noticed that using the Shift function of the LabelObject
>>> doesn't change the object's boundingBox, which leds me to think that each
>>> pixel has a shift somehow not related to the bounding box.
>>>
>>> I can provide a Minimum Working Example if needed.
>>>
>>> I've read the article journal, but I couldn't see the answer, may be
>>> related to 'storing the label objects as lines', which I don't completely
>>> understand what's the graphical representation of those lines.
>>>
>>> What is going on?
>>>
>>> Cheers,
>>>
>>> Pol
>>>
>>
>>
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