[vtkusers] Create a 3d Volume with a series of jpeg images

[lindeval at dmat.ufrr.br]

You have to add the renderer to your window:

this.renderWindow3D.RenderWindow.AddRenderer(renderer);

----- Mensagem original -----
De: "Luca" <luca.pedr at gmail.com>
Para: vtkusers at vtk.org
Enviadas: Quinta-feira, 14 de Julho de 2011 12:30:05 (GMT-0300) Auto-Detected
Assunto: [vtkusers] Create a 3d Volume with a series of jpeg images

Hi!

I've a series of slices, derivated form dicom images and exported in 
jpeg (named Slice1.jpeg... Slice23.jpeg).
I've to reconstruct a 3d volume. If I use directly dicom files it's very 
simple, using vtkDicomImageReader class and specificating the folder.

But if i have to make the same thing with vtkJpegReader the result is an 
all black windows...
Having dicom images too, i can use one of these to get the width, the 
height of the image and origin, spacing and extent of the series.

This is my code, written in c# .net using activiz
##########
jpegreader.SetFilePrefix(folderName+"\\Slice");
jpegreader.SetFilePattern("%d.jpeg");
vtkDICOMImageReader header = vtkDICOMImageReader.New();
header.SetFileName("C:\\Users\\Luca\\Desktop" + "\\IM-0001-0001.dcm");
header.Update();

int height = header.GetHeight();
int width = header.GetWidth();
int depth = 23;

jpegreader.SetFileNameSliceOffset(1);
jpegreader.SetFileNameSliceSpacing(1);
double[] spacing = new double[3];
double[] origin = new double[3];
int[] extent = new int[6];
spacing=header.GetDataSpacing();
origin = header.GetDataOrigin();

jpegreader.SetDataSpacing(spacing[0], spacing[1], spacing[2]);
jpegreader.SetDataOrigin(origin[0],origin[1],origin[2]);
jpegreader.SetDataExtent(0, width - 1, 0, height - 1, 0, depth - 1);
jpegreader.SetDataScalarTypeToUnsignedChar();

vtkRenderer renderer = 
renderWindow3D.RenderWindow.GetRenderers().GetFirstRenderer();

vtkFixedPointVolumeRayCastMapper texMapper = 
vtkFixedPointVolumeRayCastMapper.New();
vtkVolume vol = vtkVolume.New();
vtkColorTransferFunction ctf = vtkColorTransferFunction.New();
vtkPiecewiseFunction spwf = vtkPiecewiseFunction.New();
vtkPiecewiseFunction gpwf = vtkPiecewiseFunction.New();

//Go through the visulizatin pipeline
texMapper.SetInputConnection(jpegreader.GetOutputPort());

//Set the color curve for the volume
  ctf.AddHSVPoint(0, .67, .07, 1);
ctf.AddHSVPoint(94, .67, .07, 1);
ctf.AddHSVPoint(139, 0, 0, 0);
ctf.AddHSVPoint(160, .28, .047, 1);
ctf.AddHSVPoint(254, .38, .013, 1);

//Set the opacity curve for the volume
spwf.AddPoint(84, 0);
spwf.AddPoint(151, .1);
spwf.AddPoint(255, 1);

//Set the gradient curve for the volume
gpwf.AddPoint(0, .2);
gpwf.AddPoint(10, .2);
gpwf.AddPoint(25, 1);

vol.GetProperty().SetColor(ctf);
vol.GetProperty().SetScalarOpacity(spwf);
vol.GetProperty().SetGradientOpacity(gpwf);
vol.SetMapper(texMapper);

//Go through the Graphics Pipeline
renderer.AddVolume(vol);
renderer.ResetCamera();
this.renderWindow3D.RenderWindow.Render();
renderer.Render();
#########

Where I'm wrong??

Thanks
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