[MINC-users] freeglut error on transform type in register, and default tranform type on register

[D. Louis Collins]

procrustes returns the translations, rotations and scaling required  
for the two transforms.  register simply ignores the scaling value  
returned (ie, sets it to 1.0) when doing a rigid body transform.
-L

On May 28, 2008, at 9:08 AM, Audette, Michel wrote:

> Hi Louis,
>
> not sure if you got my last reply. Thanks for that.
>
> Both 6 and 7 seem to call procrustes(), so I suppose that  
> procrustes() knows whether it's dealing with 6 or 7.
>
> Glad that I checked.
>
> Cheers,
>
> Michel
>
>
> -----Original Message-----
> From: minc-users-bounces at bic.mni.mcgill.ca on behalf of D. Louis  
> Collins
> Sent: Wed 5/28/2008 2:53 PM
> To: MINC users mailing list
> Subject: Re: [MINC-users] freeglut error on transform type in  
> register,and default tranform type on register
>
> Michel,
>
> The default register transformation type is 6 parameter (3 trans, 3
> rots) rigid body.
>
> If you need to see the actual transformation parameters, use xfm2param
> yourfile.xfm
>
> -Louis
>
> On May 28, 2008, at 3:45 AM, Audette, Michel wrote:
>
>> Hi all,
>>
>> I've obtained a transformation from register from homologous point
>> pairs, and the rotation part of the result looks orthonormal, but I
>> want to make sure that this isn't a coincidence.
>>
>> I cannot see the Transform Type that register assumes, because when
>> I do, I see:
>>
>> freeglut (no_program_name): Unable to create direct context
>> rendering for window 'Transform Type Selection'
>> This may hurt performance.
>> (is there an easy fix to this?)
>>
>> Can anyone indicate what is the default transformation for
>> homologous point pairs on register? Rigid or Procrustes, or
>> something else altogether?
>>
>> Cheers,
>>
>> Michel
>> _______________________________________________
>> MINC-users at bic.mni.mcgill.ca
>> http://www2.bic.mni.mcgill.ca/mailman/listinfo/minc-users
>
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