SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Adding shadows to a texture-based volume renderer
VVS '98 Proceedings of the 1998 IEEE symposium on Volume visualization
Models of light reflection for computer synthesized pictures
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Interactive translucent volume rendering and procedural modeling
Proceedings of the conference on Visualization '02
Fast, Realistic Lighting for Video Games
IEEE Computer Graphics and Applications
Illumination for computer-generated images.
Illumination for computer-generated images.
Transfer Function Based Adaptive Decompression for Volume Rendering of Large Medical Data Sets
VV '04 Proceedings of the 2004 IEEE Symposium on Volume Visualization and Graphics
Vicinity Shading for Enhanced Perception of Volumetric Data
Proceedings of the 14th IEEE Visualization 2003 (VIS'03)
Interactive Display of Isosurfaces with Global Illumination
IEEE Transactions on Visualization and Computer Graphics
Full Body Virtual Autopsies using a State-of-the-art Volume Rendering Pipeline
IEEE Transactions on Visualization and Computer Graphics
Ambient Occlusion and Edge Cueing for Enhancing Real Time Molecular Visualization
IEEE Transactions on Visualization and Computer Graphics
Hardware accelerated ambient occlusion techniques on GPUs
Proceedings of the 2007 symposium on Interactive 3D graphics and games
GPU-accelerated deep shadow maps for direct volume rendering
GH '06 Proceedings of the 21st ACM SIGGRAPH/EUROGRAPHICS symposium on Graphics hardware
Multiresolution interblock interpolation in direct volume rendering
EUROVIS'06 Proceedings of the Eighth Joint Eurographics / IEEE VGTC conference on Visualization
Advanced illumination techniques for GPU volume raycasting
ACM SIGGRAPH ASIA 2008 courses
Advanced illumination techniques for GPU-based volume raycasting
ACM SIGGRAPH 2009 Courses
Technical Section: Viewpoint information channel for illustrative volume rendering
Computers and Graphics
Efficient methods for ambient lighting
Proceedings of the 25th Spring Conference on Computer Graphics
Interactive global light propagation in direct volume rendering using local piecewise integration
SPBG'08 Proceedings of the Fifth Eurographics / IEEE VGTC conference on Point-Based Graphics
Obscurance-based volume rendering framework
SPBG'08 Proceedings of the Fifth Eurographics / IEEE VGTC conference on Point-Based Graphics
Concurrent volume visualization of real-time fMRI
VG'10 Proceedings of the 8th IEEE/EG international conference on Volume Graphics
Feature-driven ambient occlusion for direct volume rendering
VG'10 Proceedings of the 8th IEEE/EG international conference on Volume Graphics
A multidirectional occlusion shading model for direct volume rendering
EuroVis'10 Proceedings of the 12th Eurographics / IEEE - VGTC conference on Visualization
A directional occlusion shading model for interactive direct volume rendering
EuroVis'09 Proceedings of the 11th Eurographics / IEEE - VGTC conference on Visualization
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This paper introduces a novel technique to compute illumination for Direct Volume Rendering. By adding shadow effects to volume rendered images, the perception of shapes and tissue properties can be significantly improved and it has the potential to increase the diagnostic value of medical volume rendering. The integrated intensity of incident light for a voxel is computed using a local approximation of the ambient occlusion, thus avoiding the rendering of tissues with very low illumination. Luminous tissue effects are also introduced to enhance the illumination model, controlled through an emissive component in the transfer function. This effect allows the user to highlight specific structures and can give a better understanding of tissue density. Multiresolution volume management and GPU-based computation is used to significantly speed-up the calculations and to support large data sets. The scheme yields interactive frame rates for incrementally refined ambient and emissive illumination for arbitrary transfer function changes.