Difference between revisions of "Slicer3:Volume Rendering"

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== Overview ==
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<big>'''Note:''' We are migrating this content to the slicer.org domain - <font color="orange">The newer page is [https://www.slicer.org/wiki/Slicer3:Volume_Rendering  here]</font></big>
==Test the module==
 
*Copy the following folder from the svn repository http://www.na-mic.org/svn/Slicer3/trunk/Base/GUI/Testing/VolumeRendering to the following path <YourSlicerBuildDir>\lib\Slicer3\Modules\Packages\VolumeRendering.
 
*Restart Slicer
 
*Load a MRML-Scene (e. g. tutorial.xml from the [http://www.na-mic.org/Wiki/images/f/f8/Tutorial-with-dicom.zip Tutorial Dataset])
 
*Go to the module dropdown and select VolumeRendering
 
*Select "all" (if you use the tutorial dataset) as the Source Volume and click LoadNode =>The volume rendered Volume should appear.
 
*Play with the transfer function etc.
 
*Note: After changing a setting please click on the volume one time to load the new settings
 
==Latest results and limitations==
 
===Description===
 
*Loading of MRML-Nodes is possible
 
*At the moment no removing of MRML-Nodes possible
 
*Change properties
 
*Calculate transfer functions automatically
 
*No performance tuning at all
 
*Shading
 
 
 
===Screenshots===
 
[[Image:VolumeRendering.jpg|thumb|500px|center|volume rendered label map of the tutorial dataset]]
 
[[Image:VolumeRenderingWithShading.jpg|thumb|500px|center|
 
volume rendered label map of the tutorial dataset, shading enabled]]
 
 
 
==next Tasks==
 
*Add a vtkSlicerNodeWidget to prototype
 
*Have a closer look at vtkSlicerViewerWidget
 
*MRML Scene
 
== Goals ==
 
 
 
Volume rendering presets :
 
* MIP (Maximum Intensity Projection)
 
**[http://en.wikipedia.org/wiki/Maximum_intensity_projection Wikipedia]
 
**[http://www.vtk.org/doc/release/5.0/html/a02186.html vtkVolumeRayCastMIPFunction Class Reference]
 
* CT Bone and vessel
 
**Use histogram and tresholds, find possibilities to avoid outliers
 
* T1 MR Air/skin interface
 
* Label map per-label object rendering
 
**Possible starting points for this task: [http://www.na-mic.org/Slicer/Documentation/Slicer3/html/classvtkMRMLVolumeNode.html vtkMRMLVolumeNode]
 
***[http://www.na-mic.org/Slicer/Documentation/Slicer3/html/classvtkMRMLVolumeNode.html vtkMRMLVolumeNode]
 
***[http://www.vtk.org/doc/release/5.0/html/a01551.html vtkImageMapToRGBA]
 
 
 
Slicer3 module interface:
 
* Select from loaded volumes
 
* Specify preset transfer functions or use KWWidgets tools
 
 
 
Slicer3 internals:
 
* Correct coordinates including transforms
 
* Level of detail rendering
 
* Proper integration with surface rendering
 
 
 
Different Volume Rendering Algorithms
 
*RayCast
 
*2D Texture Mapping
 
*3D Texture Mapping
 
*...
 
 
 
== Wish List ==
 
 
 
 
 
* 2D Transfer functions - may require specialized opengl code integrated with VTK.  Talk with Gordon about latest work from Utah.
 
 
 
* use glTexSubImage3D so that incremental changes to the volume can be quickly reflected
 

Latest revision as of 18:07, 10 July 2017

Home < Slicer3:Volume Rendering

Note: We are migrating this content to the slicer.org domain - The newer page is here