Print Email Facebook Twitter Adaptively Layered Statistical Volumetric Obscurance Title Adaptively Layered Statistical Volumetric Obscurance Author Hendrickx, Q.J.A.M. Contributor Eisemann, E. (mentor) Eisemann, M. (mentor) Faculty Electrical Engineering, Mathematics and Computer Science Department Intelligent Systems Programme Computer Graphics and Visualization Date 2015-02-05 Abstract We accelerate volumetric obscurance, a variant of ambient occlusion, and solve undersampling artifacts, such as banding, noise or blurring, that screen-space techniques traditionally suffer from. We make use of an efficient statistical model to evaluate the occlusion factor in screen-space using a single sample. Overestimations and halos are reduced by an adaptive layering of the visible geometry. Bias at tilted surfaces is avoided by projecting and evaluating the volumetric obscurance in tangent space of each surface point. We compare our approach to several traditional screen-space volumetric obscurance techniques and show its competitive qualitative and quantitative performance. Our algorithm maps well to graphics hardware, does not require the traditional bilateral blur step of previous approaches, and avoids typical screen-space related artifacts such as temporal instability due to undersampling. Subject Computer GraphicsThree-Dimensional Graphics and RealismColorshadingshadowingand textureAmbient Occlusion To reference this document use: http://resolver.tudelft.nl/uuid:357270c8-b4eb-4e49-a225-b94772e845f2 Part of collection Student theses Document type master thesis Rights (c) 2015 Hendrickx, Q.J.A.M. Files PDF report.pdf 21.74 MB MP4 Video.mp4 3.94 MB Close viewer /islandora/object/uuid:357270c8-b4eb-4e49-a225-b94772e845f2/datastream/OBJ1/view