[MINC-users] xfmavg and lsq6 transforms

[Gabriel A. Devenyi]

https://www.dropbox.com/s/vk9zzile5ox7pu4/transforms.tar.bz2?dl=0

-- 
Gabriel A. Devenyi B.Eng. Ph.D.
Research Computing Associate
Computational Brain Anatomy Laboratory
Cerebral Imaging Center
Douglas Mental Health University Institute
McGill University
t: 514.761.6131x4781
e: gdevenyi at gmail.com

On Thu, Feb 11, 2016 at 11:33 AM, Vladimir S. FONOV <
vladimir.fonov at gmail.com> wrote:

> Maybe it would be easier if you would make all xfms available...
>
>
> On 16-02-11 10:55 AM, Gabriel A. Devenyi wrote:
>
>> Sure, easiest to expose with xfm2param:
>>
>> #One of 32 transforms
>>
>>> xfm2param input1.xfm
>>>
>> after parameter extraction
>> -center         0.00000    0.00000    0.00000
>> -translation    0.70513    0.30790    0.66079
>> -rotation     -87.58608    4.54388    2.03792
>> -scale          1.00000    1.00000    1.00000
>> -shear         -0.00000   -0.00000    0.00000
>>
>> #Transforms have rotations in range 83-92 -6-7 -2 4
>>
>>> xfmavg *.xfm average.xfm
>>> xfm2param average.xfm
>>>
>> after parameter extraction
>> -center         0.00000    0.00000    0.00000
>> -translation    0.38288    0.50712    0.52295
>> -rotation      -0.04862    0.66666   -0.63100
>> -scale          1.00000    1.00000    1.00000
>> -shear         -0.00000   -0.00000    0.00000
>>
>> #Rotations have been completely lost
>>
>> I just realized this may be due to the values since they’re near -90,
>> could
>> this be a problem?
>> ​
>>
>>
>
> --
> Best regards,
>
>  Vladimir S. FONOV ~ vladimir.fonov <at> gmail.com
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