[vtkusers] insert more than one value in a vtkUnsignedCharArray in one operation ...

[arnaud garcia]

hello,

I would like to create a vtkImageData  from an image data stacks. In the stack i have method to extract all pixels of a slice.

I did it with a vtkUnsignedCharArray.InsertNextValue((char)pixels[j]), but it is very slow ...., because i insert all the pixels values one by one in the array...

 byte[] pixels = (byte[])stack.getPixels(i); // retrieve all pixels of the slice (image values)
 vtkUnsignedCharArray array=new vtkUnsignedCharArray();
 for (int j=0;j<width*height;j++) 
      array.InsertNextValue((char)pixels[j]);

// build the ImageData from the vtkUnsignedCharArray 
  vtkImageData id=new vtkImageData();
  id.GetPointData().SetScalars(array);

I think, it is possible to insert all the pixels of one slice in one time in the vtkUnsignedCharArray, but i don't know how to do this with java/vtk.

 

thanks for help

arnaud


                         

 



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