SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
ACM SIGGRAPH 2003 Papers
Information Theory, Inference & Learning Algorithms
Information Theory, Inference & Learning Algorithms
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 1 - Volume 01
Energy redistribution path tracing
ACM SIGGRAPH 2005 Papers
A first-order analysis of lighting, shading, and shadows
ACM Transactions on Graphics (TOG)
Multidimensional adaptive sampling and reconstruction for ray tracing
ACM SIGGRAPH 2008 papers
ACM Transactions on Graphics (TOG)
Frequency analysis and sheared reconstruction for rendering motion blur
ACM SIGGRAPH 2009 papers
ACM SIGGRAPH Asia 2009 papers
GradientShop: A gradient-domain optimization framework for image and video filtering
ACM Transactions on Graphics (TOG)
Adaptive sampling and reconstruction using greedy error minimization
Proceedings of the 2011 SIGGRAPH Asia Conference
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
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We introduce a novel Metropolis rendering algorithm that directly computes image gradients, and reconstructs the final image from the gradients by solving a Poisson equation. The reconstruction is aided by a low-fidelity approximation of the image computed during gradient sampling. As an extension of path-space Metropolis light transport, our algorithm is well suited for difficult transport scenarios. We demonstrate that our method outperforms the state-of-the-art in several well-known test scenes. Additionally, we analyze the spectral properties of gradient-domain sampling, and compare it to the traditional image-domain sampling.