SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
The irradiance Jacobian for partially occluded polyhedral sources
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
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
Principles of Digital Image Synthesis
Principles of Digital Image Synthesis
Radiance Caching for Efficient Global Illumination Computation
IEEE Transactions on Visualization and Computer Graphics
Improved radiance gradient computation
Proceedings of the 21st spring conference on Computer graphics
A first-order analysis of lighting, shading, and shadows
ACM Transactions on Graphics (TOG)
Radiance caching for participating media
ACM Transactions on Graphics (TOG)
Spherical harmonic gradients for mid-range illumination
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
Making radiance and irradiance caching practical: adaptive caching and neighbor clamping
EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
A progressive error estimation framework for photon density estimation
ACM SIGGRAPH Asia 2010 papers
Theory, analysis and applications of 2D global illumination
ACM Transactions on Graphics (TOG)
Spatial directional radiance caching
EGSR'09 Proceedings of the Twentieth Eurographics conference on Rendering
Real-time rendering of animated hair under dynamic, low-frequency environmental lighting
Proceedings of the 11th ACM SIGGRAPH International Conference on Virtual-Reality Continuum and its Applications in Industry
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In this paper we present a technique for computing translational gradients of indirect surface reflectance in scenes containing participating media and significant occlusions. These gradients describe how the incident radiance field changes with respect to translation on surfaces. Previous techniques for computing gradients ignore the effects of volume scattering and attenuation and assume that radiance is constant along rays connecting surfaces. We present a novel gradient formulation that correctly captures the influence of participating media. Our formulation accurately accounts for changes of occlusion, including the effect of surfaces occluding scattering media. We show how the proposed gradients can be used within an irradiance caching framework to more accurately handle scenes with participating media, providing significant improvements in interpolation quality.