Reducing Aliasing Artifacts through Resampling

dc.contributor.authorReshetov, Alexanderen_US
dc.contributor.editorCarsten Dachsbacher and Jacob Munkberg and Jacopo Pantaleonien_US
dc.date.accessioned2013-10-28T10:24:04Z
dc.date.available2013-10-28T10:24:04Z
dc.date.issued2012en_US
dc.description.abstractPost-processing antialiasing methods are well suited for deferred shading because they decouple antialiasing from the rest of graphics pipeline. In morphological methods, the final image is filtered with a data-dependent filter. The filter coefficients are computed by analyzing the non-local neighborhood of each pixel. Though very simple and efficient, such methods have intrinsic quality limitations due to spatial undersampling and temporal aliasing. We explore an alternative formulation in which filter coefficients are computed locally for each pixel by supersampling geometry, while shading is still done only once per pixel. During pre-processing, each geometric subsample is converted to a single bit indicating whether the subsample is different from the central one. The ensuing binary mask is then used in the post-processing step to retrieve filter coefficients, which were precomputed for all possible masks. For a typical 8 subsamples, it results in a sub-millisecond performance, while improving the image quality by about 10 dB. To compare subsamples, we use a novel symmetric angular measure, which has a simple geometric interpretation. We propose to use this measure in a variety of applications that assess the difference between geometric samples (rendering, mesh simplification, geometry encoding, adaptive tessellation).en_US
dc.description.seriesinformationEurographics/ ACM SIGGRAPH Symposium on High Performance Graphicsen_US
dc.identifier.isbn978-3-905674-41-5en_US
dc.identifier.issn2079-8679en_US
dc.identifier.urihttps://doi.org/10.2312/EGGH/HPG12/077-086en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCR Categories: I.3.3 [Computer Graphics]: Picture/Image Generation - Antialiasing Keywords: antialiasing, post-processing effects, deferred shading, clusteringen_US
dc.titleReducing Aliasing Artifacts through Resamplingen_US
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