[ITK-users] Pointset registration

[Matt McCormick]

Hi Matias,

Can the datasets be shared?

Thanks,
Matt

On Wed, Nov 11, 2015 at 4:38 PM, Matias Montroull <matimontg at gmail.com> wrote:
> Thanks.
>
> Here's another question, it seems I need 12 points to perform the
> registration and obtain the matrix, now, the results I'm getting are not
> very good. We have the algorithm programmed manually (not using ITK) and
> when we compare the results are different (way too different).
> I just pulled the example and modified to 3 dimensions and changed the
> translationtransform to an affine transform. Is there an example using
> Affine that I can check? I'm thinking is not just changing the transform,
> there may be other variables I need to tweak..
> Matias.
>
> El mié., 11 de nov. de 2015 a la(s) 5:51 p. m., Dženan Zukić
> <dzenanz at gmail.com> escribió:
>>
>> Nowhere, which means it's the >> operator's standard white-space
>> separators (spaces, tabs, newlines).
>>
>> On Wed, Nov 11, 2015 at 3:03 PM, Matias Montroull <matimontg at gmail.com>
>> wrote:
>>>
>>> by the way, where in the code is the space separator specified?
>>>
>>> El mié., 11 de nov. de 2015 a la(s) 5:02 p. m., Matias Montroull
>>> <matimontg at gmail.com> escribió:
>>>>
>>>> that worked! Thanks for the advise, I was under the impression that
>>>> points needed to be separated by ";"
>>>> Thanks again
>>>>
>>>> El mié., 11 de nov. de 2015 a la(s) 5:00 p. m., Dženan Zukić
>>>> <dzenanz at gmail.com> escribió:
>>>>>
>>>>> By looking at the code, the numbers should be separated by space, not
>>>>> semicolon. Can you try that?
>>>>>
>>>>> HTH
>>>>>
>>>>> On Wed, Nov 11, 2015 at 2:51 PM, Matias Montroull <matimontg at gmail.com>
>>>>> wrote:
>>>>>>
>>>>>> Hi Dženan, thanks for the suggestion, I tried that example and I think
>>>>>> I'm missign something as my disk drive became crazy.
>>>>>> I basically created 2 txt files with a set of 4 points each in this
>>>>>> format:
>>>>>> -0.585938;92.406328;38.200
>>>>>> 44.7654;52.73442;61.000
>>>>>> -53.5;49.218792;68.200
>>>>>> -1.757814;81.445382;70.600
>>>>>>
>>>>>> second file has the same format but different numbers of course.
>>>>>>
>>>>>> Is there anything wrong with how I entered the point sets in both
>>>>>> files?
>>>>>>
>>>>>> As you can see it is 3 points per line separated by this character ";"
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Matias.
>>>>>>
>>>>>>
>>>>>> El mar., 10 de nov. de 2015 a la(s) 6:16 p. m., Dženan Zukić
>>>>>> <dzenanz at gmail.com> escribió:
>>>>>>>
>>>>>>> Have you seen these two examples:
>>>>>>>
>>>>>>> http://www.itk.org/Doxygen/html/Examples_2RegistrationITKv3_2IterativeClosestPoint3_8cxx-example.html
>>>>>>>
>>>>>>> http://www.itk.org/Doxygen/html/Examples_2RegistrationITKv4_2IterativeClosestPoint3_8cxx-example.html
>>>>>>>
>>>>>>> HTH
>>>>>>>
>>>>>>> On Tue, Nov 10, 2015 at 3:18 PM, Matias Montroull
>>>>>>> <matimontg at gmail.com> wrote:
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I have 2 sets of points (one is points on an image and another one
>>>>>>>> is points on a NDI tracker) and I need to obtain the transformation matrix.
>>>>>>>> What would be the best method? I'm currently using a Solver but I'd like to
>>>>>>>> implement this using ITK and better if it is SimpleITK.
>>>>>>>>
>>>>>>>> Thank you!
>>>>>>>>
>>>>>>>> Matias.
>>>>>>>> --
>>>>>>>> Matias
>>>>>>>>
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>>>>>>>
>>>>>> --
>>>>>> Matias
>>>>>
>>>>>
>>>> --
>>>> Matias
>>>
>>> --
>>> Matias
>>
>>
> --
> Matias
>
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