[vtkusers] What is Data Type returned by vtkDataObject::GetDataObjectType method?

[Grzegorz Toporek]

Dear all,

>
> when I read DICOM files, ones via vtkDICOMImageReader (all DICOMs from
> directory) and second time by using vtkDataSetReader (a .vtk file with the
> same data, that has been read and saved with ITK) I got different Data Type
> from vtkDataObject::GetDataObjectType method.
>
> What does it mean that Data Type is 1 or 6? How can I change one Data Type
> into another? The problem is, my volume is not rendering correctly for Data
> Type 6 (vtkDICOMImageReader).
>
> I use following code to get information about my data:
>
> public void getImageDataInformation(vtkImageData object){
>         //show information about data
>         dataType = object.GetDataObjectType();
>         String scalarType = object.GetScalarTypeAsString();
>         //vtkInformation outInfo = new vtkInformation();
>         // if 1 - grayscale if 3 RGB, HSV, HSI etc
>         numberOfScalarComponents    = object.GetNumberOfScalarComponents();
>         dim                         = object.GetDimensions();
>         scalarTypeMax               = object.GetScalarTypeMax();
>         scalarTypeMin               = object.GetScalarTypeMin();
>         spacing                     = object.GetSpacing();
>         dataRange                   = object.GetScalarRange();
>
>         StringBuffer buffer = new StringBuffer();
>         buffer.append("Number of components :
> ").append(numberOfScalarComponents);
>         buffer.append("\n");
>         buffer.append("Data dimentions:
> ").append(dim[0]).append("x").append(dim[1]).append("x").append(dim[2]);
>         buffer.append("\n");
>         buffer.append("Data type : ").append(dataType);
>         buffer.append("\n");
>         buffer.append("Data spacing :
> ").append(spacing[0]).append(spacing[1]).append(spacing[2]);
>         buffer.append("\n");
>         buffer.append("Scalar type: ").append(scalarType);
>         buffer.append("\n");
>         buffer.append("Data sclar min : ").append(scalarTypeMin).append("
> and max: ").append(scalarTypeMax);
>         buffer.append("\n");
>         buffer.append("Image range:
> ").append(dataRange[0]).append("-").append(dataRange[1]);
>         buffer.append("\n");
>
>         if (debug){
>             log.append(buffer.toString());
>             log.setCaretPosition(log.getDocument().getLength());
>             System.out.println(buffer.toString());
>         }
>     }
>
> The output is:
>
> 1) for DICOMs
>
> Number of components : 1
> Data dimentions: 512x512x220
> Data type : 6
> Data spacing : 0.3906250.3906251.0
> Scalar type: unsigned short
> Data sclar min : 0.0 and max: 65535.0
> Image range: 0.0-65535.0
>
> 2) for .vtk file
>
> Number of components : 1
> Data dimentions: 512x512x220
> Data type : 1
> Data spacing : 0.3906250.3906251.0
> Scalar type: unsigned short
> Data sclar min : 0.0 and max: 65535.0
> Image range: 0.0-65535.0
>
> Could you please give me some feedbacks?
>
>
> Regards,
> Grzegorz
>
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