[vtkusers] need your help imperatively!

[Yixun Liu]

Hi,

I want to convert a  java 3D array(threeDarray) to a vtkImageData object(image).

I do it use java as below:

       vtkImageData image = new vtkImageData();
       image.SetDimensions(iWidth, iHeight, iNumImg);
       image.SetOrigin(0.0, 0.0, 0.0);
       image.SetSpacing(spacing[0],spacing[1],spacing[2]);
       image.SetScalarType(5);

       vtkShortArray array = new vtkShortArray();
       array.SetNumberOfComponents(1);
       array.SetNumberOfTuples(iWidth*iNumImg*iHeight);
       

    int index = 0;
        for(int iZ = 0; iY < iNumImg; iZ++){

          for(int iY= 0; iY < iHeight; iY++){

            for(int iX = 0; iX < iWidth; iX++){

              array.SetValue(index++,threeDarray[iZ][iY][iX]);
            }
      }
}

     image.GetPointData().SetScalars(array);

However, it is very slow. To 256*256*256 slices it needs about 2 minutes to finish the loop.My computer has a high speed CPU and 1.2G memory. I need your help and any suggestion will be appreciated!


Best regards,

Yixun Liu



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