[ITK-users] [ITK] reference for setting versor components

[Andrew Harris]

Of course, looking for myself works too :)

Thanks for the help, appreciated!

--

AH


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On Fri, May 12, 2017 at 11:21 AM, Andrew Harris <aharr8 at uwo.ca> wrote:

> Hi Ziv, thanks for the response.  There is no SetMatrix method directly
> stated in the API, is it maybe inherited from a super class?
>
> --
>
> AH
>
>
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> On Fri, May 12, 2017 at 10:18 AM, Yaniv, Ziv Rafael (NIH/NLM/LHC) [C] <
> zivrafael.yaniv at nih.gov> wrote:
>
>> As far as I remember this class has a SetMatrix method, just be careful
>> as the rotation will be around a given center.
>>
>>
>>
>> The ITK global domain transformations are all of the form A(x-c) + t + c
>>  , with the nomenclature being A: matrix, c: center, t: translation, and
>> offset: t+c-Ac
>>
>>
>>
>>      hope this helps
>>
>>            Ziv
>>
>>
>>
>>
>>
>> *From: *Andrew Harris <aharr8 at uwo.ca>
>> *Date: *Friday, May 12, 2017 at 10:06 AM
>> *To: *Insight-users <insight-users at itk.org>
>> *Subject: *[ITK-users] [ITK] reference for setting versor components
>>
>>
>>
>> Hello,
>>
>> I'm hoping someone has a reference that will allow me to convert from a
>> 3X3 rotation matrix to a 3-member versor rotation for the purposes of
>> setting a known rotation about one axis as an initialization.  For
>> instance, if I wanted the equivalent of a 10 degree rotation about the
>> x-axis, I can build a 3X3 rotation matrix using sines and cosines, but the
>> project I'm working on is using VersorRigid3DTransform as the transform
>> type for the registration, so I'd like to use that for the initial
>> transform.
>>
>>
>>
>> Any help is appreciated, thanks.
>>
>> --
>>
>> AH
>>
>>
>>
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>>
>
>
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