Thanks, no worries. I was just being curious.
Kind regards,
Michel
Sent from my iPad
On Jul 25, 2012, at 12:23 PM, Mark Jenkinson <[log in to unmask]> wrote:
> Dear Michel,
>
> Creating a halfway transformation for fnirt is a *lot* harder and we have not implemented this.
> So I'm afraid the answer at the moment is no.
>
> All the best,
> Mark
>
>
> On 25 Jul 2012, at 12:21, Michel Thiebaut de Schotten wrote:
>
>> Dear all,
>>
>> Would it be possible to carry on the same analysis with fnirt?
>> Thanks for your response,
>>
>> Michel
>>
>> Sent from my iPad
>>
>> On Jul 25, 2012, at 10:42 AM, Mark Jenkinson <[log in to unmask]> wrote:
>>
>>> Hi,
>>>
>>> Yes, in SIENA we just use the one transformation.
>>> Essentially we do the same thing as in the script - use avscale to get the halfway transforms.
>>> It outputs both a forward halfway and a backward halfway transform, so you can get all you need from one call of avscale on a single transformation matrix.
>>>
>>> All the best,
>>> Mark
>>>
>>>
>>> On 25 Jul 2012, at 10:37, Andreas Bartsch wrote:
>>>
>>>> Hi,
>>>>
>>>> that would assume that the registration is inversely consistent between
>>>> the two images which is not necessarily the case.
>>>> Cheers,
>>>> Andreas
>>>>
>>>> Am 25.07.12 11:20 schrieb "Gabor Perlaki" unter
>>>> <[log in to unmask]>:
>>>>
>>>>> Dear Saad,
>>>>>
>>>>> Thank you for your answer. I don't understand something in the script
>>>>> you sent.
>>>>>
>>>>> There is two registration in the script:
>>>>>
>>>>> 1, A image to the B
>>>>> 2, B image to the A
>>>>>
>>>>> and after that the Forward half transform from the first registration is
>>>>> applied for A image and the Forward half transform from the second
>>>>> registration is applied for B image.
>>>>>
>>>>> Why do we need 2 registrations? Wouldn't it better to do only the first
>>>>> registration and after that applying the Forward half transform to the A
>>>>> image and the Backward half transform to the B image?
>>>>>
>>>>> Thanks,
>>>>> Gabor
>>>>
>>
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