VolumeSlicer

Large-scale Volume Data Visualization

Item

1.Big-Screen Parallel Visualization: Based on real-time volume renderer, using MPI to pass messages.

2.High-Quality Renderer and Path Editor: Using path-editor to generator camera path then render with an off-screen volume renderer.

3.Slice Visualization Extract from Large-Scale Volume: For any position and angle slice, and provide access with web.

Feature

1.Three backends for volume renderer implement: Provide OpenGL and CUDA real-time volume renderer, CUDA and CPU off-screen volume renderer.

2.Easy to Integrated: Volume renderer provide an interface like follows

class IVolumeRenderer{
public:
   IVolumeRenderer() = default;

   virtual ~IVolumeRenderer(){}

   virtual auto GetBackendName()-> std::string = 0;

   virtual void SetMPIRender(MPIRenderParameter) = 0;

   virtual void SetStep(double step,int steps) = 0;

   virtual void SetCamera(Camera camera) = 0;

   virtual void SetTransferFunc(TransferFunc tf) = 0;

   virtual void render(bool sync) = 0;

   virtual auto GetImage()->const Image<Color4b>& = 0;

   virtual void resize(int w,int h) = 0;

   virtual void clear() = 0;
};

class ICompVolumeRenderer: public IVolumeRenderer{
public:
   virtual void SetVolume(std::shared_ptr<CompVolume> comp_volume) = 0;

   virtual void SetRenderPolicy(CompRenderPolicy) = 0;

};

class CUDACompVolumeRenderer: public ICompVolumeRenderer{
public:
   static std::unique_ptr<CUDACompVolumeRenderer> Create(int w,int h,CUcontext ctx=nullptr);
};

class OpenGLCompVolumeRenderer: public ICompVolumeRenderer{
public:
   static std::unique_ptr<OpenGLCompVolumeRenderer> Create(int w,int h,bool create_opengl_context = true);
};

Renderer return a image data in cpu memory, but if you choose to use OpenGL renderer while you have create a OpenGL context outside, you can choose to pass create_opengl_context=false when creating OpenGLCompVolumeRenderer, then the renderer internal with use your outside OpenGL context which meanings you don't need to get image by call GetImage but just call render in you render loop.

3.Flexible Volume Data Format: For better perfermance, you can define your own data format without recompiling the renderer. Just extents the data reader by the plugin IBlockVolumeProviderPluginInterface in VolumeSlicer/Ext/iblock_volume_plugin_interface.hpp

ScreenShot

• Real-Time LargeVolume Visualization

• Off-Screen LargeVolume Visualization