Firefly Removal in Monte Carlo Rendering with Adaptive Median of meaNs

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dc.contributor.authorBuisine, Jérômeen_US
dc.contributor.authorDelepoulle, Samuelen_US
dc.contributor.authorRenaud, Christopheen_US
dc.contributor.editorBousseau, Adrien and McGuire, Morganen_US
dc.date.accessioned2021-07-12T12:13:28Z
dc.date.available2021-07-12T12:13:28Z
dc.date.issued2021
dc.description.abstractEstimating the rendering equation using Monte Carlo methods produces photorealistic images by evaluating a large number of samples of the rendering equation per pixel. The final value for each pixel is then calculated as the average of the contribution of each sample. The mean is a good estimator, but not necessarily robust which explains the appearance of some visual artifacts such as fireflies, due to an overestimation of the value of the mean. The MoN (Median of meaNs) is a more robust estimator than the mean which allows to reduce the impact of outliers which are the cause of these fireflies. However, this method converges more slowly than the mean, which reduces its interest for pixels whose distribution does not contain outliers. To overcome this problem we propose an extension of the MoN based on the Gini coefficient in order to exploit the best of the two estimators during the computation. This approach is simple to implement whatever the integrator and does not require complex parameterization. Finally, it presents a reduced computational overhead and leads to the disappearance of fireflies.en_US
dc.description.sectionheadersPath Tracing, Monte Carlo Rendering
dc.description.seriesinformationEurographics Symposium on Rendering - DL-only Track
dc.identifier.doi10.2312/sr.20211296
dc.identifier.isbn978-3-03868-157-1
dc.identifier.issn1727-3463
dc.identifier.pages121-132
dc.identifier.urihttps://doi.org/10.2312/sr.20211296
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/sr20211296
dc.publisherThe Eurographics Associationen_US
dc.subjectComputing methodologies
dc.subjectMonte Carlo Techniques
dc.subjectRendering
dc.subjectGlobal Illumination
dc.subjectSampling and Reconstruction
dc.titleFirefly Removal in Monte Carlo Rendering with Adaptive Median of meaNsen_US
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