參考：

代碼是在vtk560環境下寫出來的。下面直接貼代碼：

using?vtk;

namespace?dicomorientationtest

{

public?partial?class?Form1?:?Form

{

#region?私有成員

private?vtk.vtkFormsWindowControl?vtkFormsWindowControl1?=?null;

private?vtk.vtkDICOMImageReader?_reader?=?null;

private?vtk.vtkVolume?_vtkVolume?=?null;

private?vtk.vtkRenderer?_render?=?null;

private?vtk.vtkGenericRenderWindowInteractor?_iren?=?new?vtk.vtkGenericRenderWindowInteractor();

private?vtk.vtkRenderWindow?_renwin?=?null;

private?vtk.vtkFollower?textActor;

#endregion

#region?屬性

public?string?FileDir

{

get;

set;

}

#endregion

public?Form1()

{

InitializeComponent();

InitRenderWindow();

}

private?void?InitRenderWindow()

{

this.vtkFormsWindowControl1?=?new?vtkFormsWindowControl();

this.SuspendLayout();

this.vtkFormsWindowControl1.Name?=?"vtkFormsWindowControl1";

this.vtkFormsWindowControl1.Size?=?new?System.Drawing.Size(800,?800);

this.vtkFormsWindowControl1.TabIndex?=?0;

this.Location?=?new?System.Drawing.Point(10,?10);

this.vtkFormsWindowControl1.Text?=?"vtkFormsWindowControl1";

this.Controls.Add(vtkFormsWindowControl1);

}

private?void?btn_Open_Click(object?sender,?EventArgs?e)

{

FolderBrowserDialog?dlg?=?new?FolderBrowserDialog();

if?(DialogResult.OK?==?dlg.ShowDialog())

{

FileDir?=?dlg.SelectedPath;

}

}

private?void?btn_render_Click(object?sender,?EventArgs?e)

{

if?(!String.IsNullOrEmpty(FileDir))

{

_render?=?new?vtkRenderer();

#region?dicom

_reader?=?new?vtkDICOMImageReader();

_reader.SetDirectoryName(FileDir);

_reader.SetDataByteOrderToLittleEndian();

_reader.Update();

int[]?dimensions?=?_reader.GetOutput().GetDimensions();

#region?opacity?transfer

vtkPiecewiseFunction?compositeOpacity?=?new?vtkPiecewiseFunction();

compositeOpacity.AddPoint(-2048,?0);

compositeOpacity.AddPoint(128.643,?0);

compositeOpacity.AddPoint(129.982,?0.0982143);

compositeOpacity.AddPoint(173.636,?0.1);

compositeOpacity.AddPoint(255.884,?0.1);

compositeOpacity.AddPoint(3661,?1);

//compositeOpacity.AddPoint(173.636,?0);

//compositeOpacity.AddPoint(255.884,?0);

//compositeOpacity.AddPoint(3661,?0);

#endregion

#region?colortransfer

vtkColorTransferFunction?colorFun?=?new?vtkColorTransferFunction();

colorFun.AddRGBPoint(-2048,?0,?0,?0);

colorFun.AddRGBPoint(128.643,?0,?0,?0);

colorFun.AddRGBPoint(129.982,?0.615686,?0,?0.0156863);

colorFun.AddRGBPoint(173.636,?0.909804,?0.454902,?0);

colorFun.AddRGBPoint(255.884,?0.886275,?0.886275,?0.886275);

colorFun.AddRGBPoint(584.878,?0.968627,?0.968627,?0.968627);

colorFun.AddRGBPoint(3661,?1,?1,?1);

#endregion

vtkVolumeProperty?property?=?new?vtkVolumeProperty();

property.ShadeOff();

property.SetInterpolationTypeToLinear();

property.SetColor(colorFun);

property.SetScalarOpacity(compositeOpacity);

property.SetDiffuse(0.9);

property.SetAmbient(0.1);

property.SetSpecular(0.2);

property.SetSpecularPower(10.0);

double[]?range?=?_reader.GetOutput().GetScalarRange();

double?min?=?range[0];

double?max?=?range[1];

double?diff?=?max?-?min;

double?slope?=?4095.0?/?diff;//斜率

double?inter?=?-slope?*?min;//截距

double?shift?=?inter?/?slope;

vtkImageShiftScale?vtkImageCast?=?new?vtkImageShiftScale();

vtkImageCast.SetInput(_reader.GetOutput());

vtkImageCast.SetScale(slope);

vtkImageCast.SetShift(shift);

vtkImageCast.SetOutputScalarTypeToUnsignedShort();

vtkImageCast.Update();

vtkVolumeRayCastCompositeFunction?compositefunction?=?new?vtkVolumeRayCastCompositeFunction();

compositefunction.SetCompositeMethodToInterpolateFirst();

vtkVolumeRayCastMapper?mapper?=?new?vtkVolumeRayCastMapper();

mapper.SetVolumeRayCastFunction(compositefunction);

mapper.SetInput(vtkImageCast.GetOutput());

mapper.SetSampleDistance(0.1);

vtkVolume?volume?=?new?vtkVolume();

volume.SetMapper(mapper);

volume.SetProperty(property);

_render.AddViewProp(volume);

#endregion

#region?axes

double[]?space?=?_reader.GetOutput().GetSpacing();

Console.WriteLine("spacing[0]={0},[1]={1},[2]={2}",?space[0],?space[1],?space[2]);

int[]?extents?=?_reader.GetOutput().GetExtent();

Console.WriteLine("extents[0]={0},[1]={1},[2]={2},[3]={3},[4]={4},[5]={5}",

extents[0],?extents[1],?extents[2],?extents[3],?extents[4],?extents[5]);

vtkTransform?transform?=?new?vtkTransform();

transform.Translate(0.0,?0.0,?0.0);

transform.Scale((extents[1])?*?(space[0]),?(extents[3])?*?(space[1]),?(extents[5])?*?(space[2]));

vtkAxesActor?axes?=?new?vtkAxesActor();

axes.SetUserTransform(transform);

_render.AddActor(axes);

#endregion

#region??text

double?scalesize=(extents[1])?*?(space[0])/20;

//原點

vtkVectorText?otext?=?new?vtkVectorText();

otext.SetText("O");

vtkPolyDataMapper?textMapper?=?new?vtkOpenGLPolyDataMapper();

textMapper.SetInputConnection(otext.GetOutputPort());

textActor?=?new?vtkFollower();

textActor.SetMapper(textMapper);

textActor.SetScale(scalesize,scalesize,scalesize);

textActor.AddPosition(0,?-0.1,?0);

textActor.SetCamera(_render.GetActiveCamera());

_render.AddViewProp(textActor);

//左?L

vtkVectorText?lText?=?new?vtkVectorText();

lText.SetText("L");

vtkPolyDataMapper?lMapper?=?new?vtkOpenGLPolyDataMapper();

lMapper.SetInputConnection(lText.GetOutputPort());

vtkFollower?lActor?=?new?vtkFollower();

lActor.SetMapper(lMapper);

lActor.SetScale(scalesize,scalesize,scalesize);

lActor.GetProperty().SetColor(0,1,0);

lActor.AddPosition((extents[1]?*?space[0])+10,?(extents[3]?*?space[1])?/?2,?(extents[5]?*?space[2])?/?2);

lActor.SetCamera(_render.GetActiveCamera());

_render.AddViewProp(lActor);

//右?R

vtkVectorText?rText?=?new?vtkVectorText();

rText.SetText("R");

vtkPolyDataMapper?rMapper?=?new?vtkOpenGLPolyDataMapper();

rMapper.SetInputConnection(rText.GetOutputPort());

vtkFollower?rActor?=?new?vtkFollower();

rActor.SetMapper(rMapper);

rActor.SetScale(scalesize,?scalesize,?scalesize);

rActor.GetProperty().SetColor(1,?0,?0);

rActor.AddPosition(-10,?(extents[3]?*?space[1])?/?2,?(extents[5]?*?space[2])?/?2);

rActor.SetCamera(_render.GetActiveCamera());

_render.AddViewProp(rActor);

//前?A

vtkVectorText?aText?=?new?vtkVectorText();

aText.SetText("A");

vtkPolyDataMapper?aMapper?=?new?vtkOpenGLPolyDataMapper();

aMapper.SetInputConnection(aText.GetOutputPort());

vtkFollower?aActor?=?new?vtkFollower();

aActor.SetMapper(aMapper);

aActor.SetScale(scalesize,?scalesize,?scalesize);

aActor.GetProperty().SetColor(0,?1,?0);

aActor.AddPosition((extents[1]?*?space[0])?/?2,?(extents[3]?*?space[1])+10,?(extents[5]?*?space[2])?/?2);

aActor.SetCamera(_render.GetActiveCamera());

_render.AddViewProp(aActor);

//后?P

vtkVectorText?pText?=?new?vtkVectorText();

pText.SetText("P");

vtkPolyDataMapper?pMapper?=?new?vtkOpenGLPolyDataMapper();

pMapper.SetInputConnection(pText.GetOutputPort());

vtkFollower?pActor?=?new?vtkFollower();

pActor.SetMapper(pMapper);

pActor.SetScale(scalesize,?scalesize,?scalesize);

pActor.GetProperty().SetColor(1,?0,?0);

pActor.AddPosition((extents[1]?*?space[0])?/?2,?-10,?(extents[5]?*?space[2])?/?2);

pActor.SetCamera(_render.GetActiveCamera());

_render.AddViewProp(pActor);

//頭?H

vtkVectorText?hText?=?new?vtkVectorText();

hText.SetText("H");

vtkPolyDataMapper?hMapper?=?new?vtkOpenGLPolyDataMapper();

hMapper.SetInputConnection(hText.GetOutputPort());

vtkFollower?hActor?=?new?vtkFollower();

hActor.SetMapper(hMapper);

hActor.SetScale(scalesize,?scalesize,?scalesize);

hActor.GetProperty().SetColor(0,?1,?0);

hActor.AddPosition((extents[1]?*?space[0])?/?2,(extents[3]?*?space[1])?/?2,-10?);

hActor.SetCamera(_render.GetActiveCamera());

_render.AddViewProp(hActor);

//腳?F

vtkVectorText?fText?=?new?vtkVectorText();

fText.SetText("F");

vtkPolyDataMapper?fMapper?=?new?vtkOpenGLPolyDataMapper();

fMapper.SetInputConnection(fText.GetOutputPort());

vtkFollower?fActor?=?new?vtkFollower();

fActor.SetMapper(fMapper);

fActor.SetScale(scalesize,?scalesize,?scalesize);

fActor.GetProperty().SetColor(0,?1,?0);

fActor.AddPosition((extents[1]?*?space[0])?/?2,?(extents[3]?*?space[1])?/?2,?(extents[5]?*?space[2])+10);

fActor.SetCamera(_render.GetActiveCamera());

_render.AddViewProp(fActor);

#endregion

_render.ResetCamera();

vtkFormsWindowControl1.GetRenderWindow().AddRenderer(_render);

_renwin?=?vtkFormsWindowControl1.GetRenderWindow();

_renwin.AddRenderer(_render);

_renwin.Render();

}

else

{

MessageBox.Show("請先選定文件夾!");

}

}

}

}

效果圖：

總結

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