[ITK] [ITK-dev] itk::Statistics::ScalarImageToCooccurrenceMatrixFilter input image and mask are same type

Dženan Zukić dzenanz at gmail.com
Wed Jun 7 10:25:42 EDT 2017


Hi Yi,

I suppose that mask having the same image type as the input is a limitation
of the current class. I had a quick look at the class implementation
itkScalarImageToCooccurrenceMatrixFilter.hxx
<https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Numerics/Statistics/include/itkScalarImageToCooccurrenceMatrixFilter.hxx>,
and it seems easy to introduce a new (3rd) template parameter for the mask.
It should be equal to TImageType by default for backwards compatibility.

That is the preferred solution to this problem. Once you get it working,
please submit <https://itk.org/Wiki/ITK/Git/Develop> a patch so others can
benefit from this improvement.

Regards,
Dženan Zukić, PhD, Senior R&D Engineer, Kitware (Carrboro, N.C.)

On Wed, Jun 7, 2017 at 9:48 AM, Yi Gao <gaoyi.cn at gmail.com> wrote:

> Dear All,
>
> I was using the itk::Statistics::ScalarImageToCooccurrenceMatrixFilter
> and found that the input Image and the input Mask image has to be the same
> (scalar) type.
>
> Is this on purpose? Apparently this causes problem when we have input
> texture image as float pixel type and mask image of integer type. I can add
> pre-processing to work around but just want to be sure if my understanding
> is correct.
>
> Thanks!
>
> Best,
> yi
>
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