[Insight-developers] question about CovarianceSampleFilter

[Luis Ibanez]

HI Arnaud,

I'm reconstructing that patch from scratch,
but this time as a git branch    :-)

It is almost ready,
I need to iron out the tests...


     Luis


---------------------------------
On Fri, Dec 3, 2010 at 4:29 PM, Arnaud Gelas
<Arnaud_Gelas at hms.harvard.edu> wrote:
> Brad,
>
> thanks for the link!!
>
> ---
>
> Luis,
>
> By any chance, do you still have the patch you mentioned on Mantis?
>
> Thanks,
> Arnaud
>
>
> On Dec 3, 2010, at 4:25 PM, Bradley Lowekamp wrote:
>
>> I believe I report this bug a while back:
>> http://public.kitware.com/Bug/view.php?id=8893
>>
>> On Dec 3, 2010, at 3:57 PM, Arnaud Gelas wrote:
>>
>>> Hi all,
>>>
>>> In itk::CovarianceSampleFilter, the mean is computed as the same type
>>> as the TSample type. So if inputs are vector of unsigned char, the
>>> mean is a vector of unsigned char...
>>> While the mean is assumed to be as the same type as TSample, the
>>> covariance matrix coefficients are in double, not in the same type as
>>> the input.
>>>
>>> Shouldn't the mean' components in double (to be consistent with what
>>> has been done for the covariance matrix)?
>>>
>>> Thanks,
>>> Arnaud
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>
>