The design and analysis of spatial data structures
The design and analysis of spatial data structures
Adaptive radiosity textures for bidirectional ray tracing
SIGGRAPH '90 Proceedings of the 17th annual conference on Computer graphics and interactive techniques
Computing the antipenumbra of an area light source
SIGGRAPH '92 Proceedings of the 19th annual conference on Computer graphics and interactive techniques
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Interactive update of global illumination using a line-space hierarchy
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
The light volume: an aid to rendering complex environments
Proceedings of the eurographics workshop on Rendering techniques '96
Global illumination using photon maps
Proceedings of the eurographics workshop on Rendering techniques '96
An optimal algorithm for approximate nearest neighbor searching fixed dimensions
Journal of the ACM (JACM)
A ray tracing solution for diffuse interreflection
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
Realistic image synthesis using photon mapping
Realistic image synthesis using photon mapping
EGRW '02 Proceedings of the 13th Eurographics workshop on Rendering
IEEE Computer Graphics and Applications
Density Control for Photon Maps
Proceedings of the Eurographics Workshop on Rendering Techniques 2000
Orientation Lightmaps for Photon Tracing in Complex Environments
CGI '00 Proceedings of the International Conference on Computer Graphics
A practical guide to global illumination using ray tracing and photon mapping
ACM SIGGRAPH 2004 Course Notes
Simulating multiple scattering in hair using a photon mapping approach
ACM SIGGRAPH 2006 Papers
Line space gathering for single scattering in large scenes
ACM SIGGRAPH 2010 papers
A progressive error estimation framework for photon density estimation
ACM SIGGRAPH Asia 2010 papers
A comprehensive theory of volumetric radiance estimation using photon points and beams
ACM Transactions on Graphics (TOG)
Volumetric vector-based representation for indirect illumination caching
Journal of Computer Science and Technology
Proceedings of the 2011 SIGGRAPH Asia Conference
Virtual ray lights for rendering scenes with participating media
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
State of the art in photon density estimation
ACM SIGGRAPH 2012 Courses
Adaptive progressive photon mapping
ACM Transactions on Graphics (TOG)
Line segment sampling with blue-noise properties
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
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We describe a novel data structure for representing light transport called ray map. The ray map extends the concept of photon maps: it stores not only photon impacts but the whole photon paths. We demonstrate the utility of ray maps for global illumination by eliminating boundary bias and reducing topological bias of density estimation in global illumination. Thanks to the elimination of boundary bias we could use ray maps for fast direct visualization with the image quality being close to that obtained by the expensive final gathering step. We describe in detail our implementation of the ray map using a lazily constructed kD-tree. We also present several optimizations bringing the ray map query performance close to the performance of the photon map.