Light diffusion through clouds and haze
Computer Vision, Graphics, and Image Processing
The zonal method for calculating light intensities in the presence of a participating medium
SIGGRAPH '87 Proceedings of the 14th annual conference on Computer graphics and interactive techniques
Display of Surfaces from Volume Data
IEEE Computer Graphics and Applications
Direct volume rendering with shading via three-dimensional textures
Proceedings of the 1996 symposium on Volume visualization
Display of clouds taking into account multiple anisotropic scattering and sky light
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Efficient simulation of light transport in scenes with participating media using photon maps
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Semi-automatic generation of transfer functions for direct volume rendering
VVS '98 Proceedings of the 1998 IEEE symposium on Volume visualization
Hue-balls and lit-tensors for direct volume rendering of diffusion tensor fields
VIS '99 Proceedings of the conference on Visualization '99: celebrating ten years
Two-level volume rendering — fusing MIP and DVR
Proceedings of the conference on Visualization '00
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
Proceedings of the conference on Visualization '01
Optical Models for Direct Volume Rendering
IEEE Transactions on Visualization and Computer Graphics
IEEE Transactions on Visualization and Computer Graphics
A Model for Volume Lighting and Modeling
IEEE Transactions on Visualization and Computer Graphics
Light reflection functions for simulation of clouds and dusty surfaces
SIGGRAPH '82 Proceedings of the 9th annual conference on Computer graphics and interactive techniques
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Refraction in discrete ray tracing
VG'01 Proceedings of the 2001 Eurographics conference on Volume Graphics
Visualization of Boundaries in Volumetric Data Sets Using LH Histograms
IEEE Transactions on Visualization and Computer Graphics
Illustrative Context-Preserving Exploration of Volume Data
IEEE Transactions on Visualization and Computer Graphics
Local Histograms for Design of Transfer Functions in Direct Volume Rendering
IEEE Transactions on Visualization and Computer Graphics
Saliency-guided Enhancement for Volume Visualization
IEEE Transactions on Visualization and Computer Graphics
Semantic Layers for Illustrative Volume Rendering
IEEE Transactions on Visualization and Computer Graphics
Enhancing Depth-Perception with Flexible Volumetric Halos
IEEE Transactions on Visualization and Computer Graphics
Volume visualization and exploration through flexible transfer function design
Computers and Graphics
Volume visualization and exploration through flexible transfer function design
Computers and Graphics
Direct volume rendering by transfer function morphing
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
Technical Section: Semantics by analogy for illustrative volume visualization
Computers and Graphics
Interactive volume illustration using intensity filtering
Computational Aesthetics'10 Proceedings of the Sixth international conference on Computational Aesthetics in Graphics, Visualization and Imaging
Focus+Context rendering of structured biomedical data
EG VCBM'08 Proceedings of the First Eurographics conference on Visual Computing for Biomedicine
Illustrative context-preserving volume rendering
EUROVIS'05 Proceedings of the Seventh Joint Eurographics / IEEE VGTC conference on Visualization
EUROVIS'05 Proceedings of the Seventh Joint Eurographics / IEEE VGTC conference on Visualization
A tri-space visualization interface for analyzing time-varying multivariate volume data
EUROVIS'07 Proceedings of the 9th Joint Eurographics / IEEE VGTC conference on Visualization
Design of multi-dimensional transfer functions using dimensional reduction
EUROVIS'07 Proceedings of the 9th Joint Eurographics / IEEE VGTC conference on Visualization
EUROVIS'06 Proceedings of the Eighth Joint Eurographics / IEEE VGTC conference on Visualization
Real-time surface analysis and tagged material cleansing for virtual colonoscopy
VG'10 Proceedings of the 8th IEEE/EG international conference on Volume Graphics
Interaction-dependent semantics for illustrative volume rendering
EuroVis'08 Proceedings of the 10th Joint Eurographics / IEEE - VGTC conference on Visualization
EuroVis'10 Proceedings of the 12th Eurographics / IEEE - VGTC conference on Visualization
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An important task in volume rendering is the visualization of boundaries between materials. This is typically accomplished using transfer functions that increase opacity based on a voxelýs value and gradient. Lighting also plays a crucial role in illustrating surfaces. In this paper we present a multi-dimensional transfer function method for enhancing surfaces, not through the variation of opacity, but through the modification of surface shading. The technique uses a lighting transfer function that takes into account the distribution of values along a material boundary and features a novel interface for visualizing and specifying these transfer functions. With our method, the user is given a means of visualizing boundaries without modifying opacity, allowing opacity to be used for illustrating the thickness of homogeneous materials through the absorption of light.