Ray Tracing

In recent years, there has been a renewed interest in real-time ray tracing for interactive applications. This is due to many factors: firstly, processor speed has continued to rise at exponential rates as predicted by Moore’s Law and is approaching the raw computational power needed for interactive ray tracing. Secondly, ray tracing algorithms can be highly parallelized on shared memory and distributed memory systems. Therefore, the current hardware trend towards desktop systems with multi-core CPUs and programmable GPUs can be used to accelerate ray tracing. Finally, recent algorithmic improvements that exploit ray coherence can achieve a significant improvement in rendering time.

We have active research projects in the area of interactive ray tracing dealing with problems such as ray tracing massive datasets and deformable models.

Publications

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SATO: Surface-Area Traversal Order for Shadow Ray Tracing  2014.
Computer Graphics Forum

PDF Project Google Scholar Ray Tracing

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RayCore: A ray-tracing hardware architecture for mobile devices  2014.
ACM Transactions on Graphics

PDF Video Google Scholar Ray Tracing

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HART: A Hybrid Architecture for Ray Tracing Animated Scenes  2014.
IEEE Transactions on Visualization and Computer Graphics

PDF Project Google Scholar Ray Tracing

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Aural Proxies and Directionally-Varying Reverberation for Interactive Sound Propagation in Virtual Environments  2013.
IEEE Virtual Reality (special issue of IEEE TVCG)

PDF Project Video Google Scholar Sound Synthesis Ray Tracing

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Real-time Reflections and Reverberation for Next-generation Interactive Sound Rendering with Acoustic Effects  2013.
Intel Software Visual Adrenaline

PDF Google Scholar Sound Synthesis Ray Tracing

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Guided Multiview Ray Tracing for Fast Auralization  2012.
IEEE Transactions on Visualization and Computer Graphics (TVCG)

PDF Project Google Scholar Sound Synthesis Ray Tracing

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Memory-scalable GPU Spatial Hierarchy Construction  2011.
IEEE Transactions on Visualization and Computer Graphics (TVCG)

PDF Google Scholar Ray Tracing GPGPU

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Interactive Geometric Sound Propagation and Rendering  2010.
Intel Software Network

PDF Project Google Scholar Sound Synthesis Ray Tracing

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Interactive Ray Tracing of Massive and Deformable Models  2010.
Ph.D. Dissertation, University of North Carolina at Chapel Hill

PDF Google Scholar Ray Tracing Massive Models

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Fast BVH construction on GPUs  2009.
Eurographics

PDF Project Video YouTube Google Scholar Ray Tracing GPGPU

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FastV: From-point Visibility Culling on Complex Models  2009.
Eurographics Symposium on Rendering (EGSR)

PDF Project Video YouTube Google Scholar Sound Synthesis Hidden Surface Ray Tracing

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Fast Hard and Soft Shadow Generation on Complex Models Using Selective Ray Tracing  2009.

PDF Project Video Google Scholar Ray Tracing GPGPU Shadow Rendering Massive Models

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Work Distribution Methods on GPUs  2009.

PDF Project Google Scholar Ray Tracing GPGPU

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ReduceM: Interactive and Memory Efficient Ray Tracing of Large Models  2008.
Eurographics Symposium on Rendering (EGSR)

PDF Project Video YouTube Google Scholar Ray Tracing Massive Models

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AD-FRUSTA: Adaptive Frustum Tracing for Interactive Sound Propagation  2008.
IEEE Transactions on Visualization and Computer Graphics (TVCG)

PDF Project YouTube Google Scholar Sound Synthesis Ray Tracing

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Fast BVH Construction on GPUs  2008.

PDF Project Video YouTube Google Scholar GPGPU Ray Tracing Simplification

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Accelerating Line-of-sight Computations in Large OneSAF Terrains with Dynamic Events  2008.
Interservice/Industry Training, Simulation, and Education Conference (I/ITSEC)

PDF Project Google Scholar Ray Tracing Hidden Surface

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Ray Tracing Dynamic Scenes Using Selective Restructuring  2007.
Eurographics Symposium on Rendering (EGSR)

PDF Project Video Google Scholar Ray Tracing

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Interactive Sound Propagation in Dynamic Scenes Using Frustum Tracing  2007.
IEEE Transactions on Visualization and Computer Graphics (TVCG)

PDF Project Google Scholar Sound Synthesis Ray Tracing

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Adaptive Sampling for Frustum-based Sound Propagation in Complex and Dynamic Environments  2007.
International Congress on Acoustics (Invited Paper)

PDF Project Google Scholar Ray Tracing

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Real-time sound synthesis and propagation for games  2007.
Communications of the ACM (CACM)

Project Google Scholar Ray Tracing Animation Sound Synthesis

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Ray-Strips: A Compact Mesh Representation for Interactive Ray Tracing  2007.
IEEE/Eurographics Symposium on Interactive Ray Tracing

PDF Project Google Scholar Ray Tracing Massive Models

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Real-time Interaction with Complex Models  2007.
IEEE Computer Graphics and Applications (CG&A)

PDF Google Scholar Massive Models Ray Tracing

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Logarithmic Perspective Shadow Maps  2007.
Ph.D. Dissertation, University of North Carolina at Chapel Hill

PDF Google Scholar Ray Tracing

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R-LODs: Fast LOD-based Ray Tracing of Massive Models  2006.
Pacific Graphics

PDF Project Video Google Scholar Ray Tracing Massive Models

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Efficient Visibility-based Algorithms for Interactive Walkthrough, Shadow Generation, and Collision Detection.  2004.
Ph.D. Dissertation, University of North Carolina at Chapel Hill

PDF Google Scholar Massive Models Ray Tracing Collision Detection