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- W804537111 abstract "Rendering photo-realistic images from a 3D scene description remains a challenging problem when processing complex geometry exposing many occlusions. In that case, simulating light propagation requires hours to produce a correct image. An opening map can be used to extract information from the geometry of the empty space of a scene, where light travels. It describes local thickness and allows to identify narrow regions that are difficult to traverse with ray tracing. We propose a new method to extract portals in order to improve rendering algorithms based on ray tracing. This method is based on the opening map, which is used to define a labeling of the empty space. Then portals - 2D surfaces embedded in empty space - are extracted from labeled regions. We demonstrate that those portals can be sampled in order to explore the scene efficiently with ray tracing." @default.
- W804537111 created "2016-06-24" @default.
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- W804537111 date "2015-01-01" @default.
- W804537111 modified "2023-10-01" @default.
- W804537111 title "Portal Extraction Based on an Opening Labeling for Ray Tracing" @default.
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- W804537111 doi "https://doi.org/10.1007/978-3-319-18720-4_3" @default.
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