Energy preserving non-linear filters
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Progressive radiance evaluation using directional coherence maps
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Fast calculation of soft shadow textures using convolution
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Direct illumination with lazy visibility evaluation
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Anisotropic diffusion for Monte Carlo noise reduction
ACM Transactions on Graphics (TOG)
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Efficient image-based methods for rendering soft shadows
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Shadow algorithms for computer graphics
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Casting curved shadows on curved surfaces
SIGGRAPH '78 Proceedings of the 5th annual conference on Computer graphics and interactive techniques
A geometry-based soft shadow volume algorithm using graphics hardware
ACM SIGGRAPH 2003 Papers
A Novel Monte Carlo Noise Reduction Operator
IEEE Computer Graphics and Applications
Fast and detailed approximate global illumination by irradiance decomposition
ACM SIGGRAPH 2005 Papers
A frequency analysis of light transport
ACM SIGGRAPH 2005 Papers
Soft shadow volumes for ray tracing
ACM SIGGRAPH 2005 Papers
Multidimensional adaptive sampling and reconstruction for ray tracing
ACM SIGGRAPH 2008 papers
Real-time, all-frequency shadows in dynamic scenes
ACM SIGGRAPH 2008 papers
Shield fields: modeling and capturing 3D occluders
ACM SIGGRAPH Asia 2008 papers
Soft irregular shadow mapping: fast, high-quality, and robust soft shadows
Proceedings of the 2009 symposium on Interactive 3D graphics and games
ACM Transactions on Graphics (TOG)
Frequency analysis and sheared reconstruction for rendering motion blur
ACM SIGGRAPH 2009 papers
Efficient ray traced soft shadows using multi-frusta tracing
Proceedings of the Conference on High Performance Graphics 2009
ACM SIGGRAPH Asia 2009 papers
OptiX: a general purpose ray tracing engine
ACM SIGGRAPH 2010 papers
Frequency analysis and sheared filtering for shadow light fields of complex occluders
ACM Transactions on Graphics (TOG)
Temporal light field reconstruction for rendering distribution effects
ACM SIGGRAPH 2011 papers
Practical filtering for efficient ray-traced directional occlusion
Proceedings of the 2011 SIGGRAPH Asia Conference
On filtering the noise from the random parameters in Monte Carlo rendering
ACM Transactions on Graphics (TOG)
Image Denoising by Sparse 3-D Transform-Domain Collaborative Filtering
IEEE Transactions on Image Processing
Sample based visibility for soft shadows using alias-free shadow maps
EGSR'08 Proceedings of the Nineteenth Eurographics conference on Rendering
A real-time beam tracer with application to exact soft shadows
EGSR'07 Proceedings of the 18th Eurographics conference on Rendering Techniques
Exploiting temporal coherence for incremental all-frequency relighting
EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
Real-time soft shadow mapping by backprojection
EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
Axis-aligned filtering for interactive physically-based diffuse indirect lighting
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
Line segment sampling with blue-noise properties
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
High resolution sparse voxel DAGs
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
| Hi-index | 0.00 |
We develop a simple and efficient method for soft shadows from planar area light sources, based on explicit occlusion calculation by raytracing, followed by adaptive image-space filtering. Since the method is based on Monte Carlo sampling, it is accurate. Since the filtering is in image-space, it adds minimal overhead and can be performed at real-time frame rates. We obtain interactive speeds, using the Optix GPU raytracing framework. Our technical approach derives from recent work on frequency analysis and sheared pixel-light filtering for offline soft shadows. While sample counts can be reduced dramatically, the sheared filtering step is slow, adding minutes of overhead. We develop the theoretical analysis to instead consider axis-aligned filtering, deriving the sampling rates and filter sizes. We also show how the filter size can be reduced as the number of samples increases, ensuring a consistent result that converges to ground truth as in standard Monte Carlo rendering.