[Insight-users] Principal Component Analysis

[Mark Redd]

Sorry Luis,
I never meant to hurt you and ITK staff. I'm not good in english,
because I'm not an english native speaker, and maybe I used some words
giving them an acceptation different from the right meaning. (reading
my email, maybe the word "pity" has a strong sense).

In the preceding email, I only wanted to say that ITK is a powerful
tool, but the poor documentation (about active shape models) is a
strong limitation. Infacts, I couldn't find any pdf describing how to
use some classes and no one replied to my question on mailing-list, so
it's impossible to me to use ITK library.  I hope you will able to
improve this weakness!

No anger or similar.

Best,
Mark


2009/9/28 Luis Ibanez <luis.ibanez at kitware.com>:
>
>
>  Mark, Mark, Mark,...
>
>
>  Imagine for a minute, all the lines of code that we could
>  obtain from you if we manage to reroute the energy of your
>  rage into a positive frequency.
>
>
>  Imagine the countless technological advances that could
>  result from converting your impatient motivation into
>  resilient persistence.
>
>
>  In this world of immediate satisfaction, we all share with
>  you the frustration of having to wait a couple of hours for
>  the world to pay attention to our urgent requests.
>
>
>  All that youthful energy,
>  currently wasted in your a display of frustration and anger...
>  to no purpose.  A pity indeed.
>
>
>  Let me reply to your urgent request in a separate email.
>
>
>  Hopefully, by the time you read it, you would have come back
>  to a civilized and positive behavior that we prefer as the
>  standard of the ITK community.
>
>
>
>    Best Regards,
>
>
>       Luis
>
>
>
> -------------------
> Mark Redd wrote:
>>
>> Ok,
>> no one knows the answer, so I'll try to write my code without using ITK.
>> It's a pity not to have an appropriate documentation about all itk
>> features.
>>
>> goodbye
>>
>>
>>
>> 2009/9/25 Mark Redd <markredd85 at gmail.com>:
>>
>>> Hi people,
>>> I'm finding many problems with PCA on medical images. In my student
>>> career, I used to read "the fucking manual" in order to solve my
>>> problems, but now I can't find it!
>>>
>>> There are several things I can't understand :
>>> 1) the difference between itkImagePCADecompositionCalculatorTest,
>>> itkImagePCAShapeModelEstimator and itkPCAShapeSignedDistanceFunction
>>> codes
>>>
>>> 2) why, in their Test files, they don't accept normal images but
>>> create some strange images (i think that they are created specifying
>>> something that isn't a set of grayscale pixel values)
>>>
>>> 3) why the only understandable code,
>>> itkActiveShapeModelCalculatorTest.cxx, doesn't give me the
>>> eigenvectors and eigenvalues, when I use model.mha and foot.mha as
>>> parameter, but only the mean shape coordinates.
>>>
>>> So I don't want you getting bored with all my troubles, but can you
>>> suggest a paper or something similiar that describe these topics? I
>>> haven't foud the right answers on the official documentation and
>>> doxygen is too synthetic to be understood by a newbie like me!
>>>
>>> I'd appreciate if someone could give some suggestions,
>>> Mark
>>>
>>
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>