remicres <[email protected]> wrote:
>
> Hello Walid,
>
> Changing the default number of components per pixel of a filter's output has
> to happen before memory allocation (I guess it will fail if you do it in
> ThreadedGenerateData method).
> You might add a "this->GetOutput()->SetNumberOfComponentsPerPixel(number)" in
> the GenerateOutputInformation method. This should work because this method
> precede buffer allocation.
>
Hi,
Yes, this is as least how I usually do it. I inherit from the filter
which does nearly what I want and overload the GenerateOutputInformation
method like this:
void GenerateOutputInformation()
{
Superclass::GenerateOutputInformation();
this->GetOutput()->SetNumberOfComponentsPerPixel( m_NumberOfOutputBands );
}
See for example here:
http://tully.ups-tlse.fr/jordi/otb-bv/blob/master/src/applications/otbBVImageInversion.cxx#L78
Jordi
> Hope this helps!
>
> Rémi
>
> Le dimanche 28 juin 2015 14:54:13 UTC+2, Walid Bouceffa a écrit :
>
> Hi,
>
> I want to generate classification probabilities instead of labels, so I
> start modifying otbImageClassifier app.
> I changed OutputImageType from FloatImageType to DoubleVectorImageType in
> aim to get a multi band image where each band represent the probabilities of
> a single class
>
> To get the probability I changed the method ThreadedGenerateData of the
> class ImageClassificationFilter
> Something similar to the code bellow:
>
> for (inIt.GoToBegin(), outIt.GoToBegin(); !inIt.IsAtEnd() &&
> !outIt.IsAtEnd(); ++inIt, ++outIt)
> {
> ....
> // proba is an array with size = number of classes
> outIt.Set( proba );
> }
>
> However outIt by default support only 4 components per pixel,
> I want to know how can i change this. I already tried
> SetNumberOfComponentsPerPixel and it didn't work
>
> Could anyone help me with this ?
>
> Best wishes,
> Walid
>
>
> --
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