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Custom shaders for volume rendering and data processing on GPU
Key Investigators
- Kyle Sunderland (Queen’s University, Canada)
- Steve Pieper (Isomics)
- Andras Lasso (Queen’s University, Canada)
Project Description
Objective
- Make custom GLSL shader pipelines available in Slicer for:
- Custom volume rendering effects
- GPU-accelerated image processing
Approach and Plan
- Progress made at last project week
- Evaluate vtkGPUImageData based filters (Source)
Progress and Next Steps
- Implemented GLSL based bilateral filter
- Started implementing infrastructure required for rendering to multiple targets in order to support GPU growcut algorithm
Result
| Approach | Result | | — | — | | SimpleITK bilateral filter: | 8 min 36 seconds | | GLSL bilateral filter: | 1.5 seconds | | Speedup: | 344x |
Illustrations
- Example of vtkGPUShaderAlgorithm pipline (ShaderAlgorithm)
| Philips 3D US | Chroma-depth in PRISM | Depth peeling in PRISM |
|---|---|---|
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