Computer Graphics
TU Braunschweig

General and Robust Error Estimation and Reconstruction for Monte Carlo Rendering


General and Robust Error Estimation and Reconstruction for Monte Carlo Rendering

Adaptive filtering techniques have proven successful in handling non-uniform noise in Monte-Carlo rendering approaches. A recent trend is to choose an optimal filter per pixel from a selection of non spatially-varying filters. Nonetheless, the best filter choice is difficult to predict in the absence of a reference rendering. Our approach relies on the observation that the reconstruction error is locally smooth for a given filter. Hence, we propose to construct a dense error prediction from a small set of sparse but robust estimates. The filter selection is then formulated as a non-local optimization problem, which we solve via graph cuts, to avoid visual artifacts due to inconsistent filter choices. Our approach does not impose any restrictions on the used filters, outperforms previous state-of-the-art techniques and provides an extensible framework for future reconstruction techniques.


Author(s):Pablo Bauszat, Martin Eisemann, Elmar Eisemann, Marcus Magnor
Year:2015
Month:May
Type:Article
Journal:Computer Graphics Forum (Proc. of Eurographics EG) Vol. 34
Presented at:Eurographics
Note:Eurographics 2015 paper
Project(s): Accelerating Photo-realistic RT 


@article{bauszat2015gree,
  title = {General and Robust Error Estimation and Reconstruction for Monte Carlo Rendering},
  author = {Bauszat, Pablo and Eisemann, Martin and Eisemann, Elmar and Magnor, Marcus},
  journal = {Computer Graphics Forum (Proc. of Eurographics {EG})},
  volume = {34},
  number = {2},
  note = {Eurographics 2015 paper},
  pages = {597--608},
  month = {May},
  year = {2015}
}

Authors