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Multiple Vertex Next Event Estimation for Lighting in dense, forward-scattering Media
(The Eurographics Association and John Wiley & Sons Ltd., 2017)
We present a new technique called Multiple Vertex Next Event Estimation, which outperforms current direct lighting techniques in forward scattering, optically dense media with the Henyey-Greenstein phase function. Instead ...
Gradient-Domain Photon Density Estimation
(The Eurographics Association and John Wiley & Sons Ltd., 2017)
The most common solutions to the light transport problem rely on either Monte Carlo (MC) integration or density estimation methods, such as uni- & bi-directional path tracing or photon mapping. Recent gradient-domain ...
Hybrid Mesh-volume LoDs for All-scale Pre-filtering of Complex 3D Assets
(The Eurographics Association and John Wiley & Sons Ltd., 2017)
We address the problem of constructing appearance-preserving level of details (LoDs) of complex 3D models such as trees. We propose a hybrid method that combines the strengths of mesh and volume representations. Our main ...
Parallel BVH Construction using Progressive Hierarchical Refinement
(The Eurographics Association and John Wiley & Sons Ltd., 2017)
We propose a novel algorithm for construction of bounding volume hierarchies (BVHs) for multi-core CPU architectures. The algorithm constructs the BVH by a divisive top-down approach using a progressively refined cut of ...
GPU Ray Tracing using Irregular Grids
(The Eurographics Association and John Wiley & Sons Ltd., 2017)
We present a spatial index structure to accelerate ray tracing on GPUs. It is a flat, non-hierarchical spatial subdivision of the scene into axis aligned cells of varying size. In order to construct it, we first nest an ...