Decoupled Space and Time Sampling of Motion and Defocus Blur for Unified Rendering of Transparent and Opaque Objects

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dc.contributor.authorWidmer, Svenen_US
dc.contributor.authorWodniok, Dominiken_US
dc.contributor.authorThul, Danielen_US
dc.contributor.authorGuthe, Stefanen_US
dc.contributor.authorGoesele, Michaelen_US
dc.contributor.editorEitan Grinspun and Bernd Bickel and Yoshinori Dobashien_US
dc.date.accessioned2016-10-11T05:20:55Z
dc.date.available2016-10-11T05:20:55Z
dc.date.issued2016
dc.description.abstractWe propose a unified rendering approach that jointly handles motion and defocus blur for transparent and opaque objects at interactive frame rates. Our key idea is to create a sampled representation of all parts of the scene geometry that are potentially visible at any point in time for the duration of a frame in an initial rasterization step. We store the resulting temporally-varying fragments (t-fragments) in a bounding volume hierarchy which is rebuild every frame using a fast spatial median construction algorithm. This makes our approach suitable for interactive applications with dynamic scenes and animations. Next, we perform spatial sampling to determine all t-fragments that intersect with a specific viewing ray at any point in time. Viewing rays are sampled according to the lens uv-sampling for depth-of-field effects. In a final temporal sampling step, we evaluate the predetermined viewing ray/t-fragment intersections for one or multiple points in time. This allows us to incorporate all standard shading effects including transparency. We describe the overall framework, present our GPU implementation, and evaluate our rendering approach with respect to scalability, quality, and performance.en_US
dc.description.number7
dc.description.sectionheadersRealistic Rendering
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume35
dc.identifier.doi10.1111/cgf.13041
dc.identifier.issn1467-8659
dc.identifier.pages441-450
dc.identifier.urihttps://doi.org/10.1111/cgf.13041
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf13041
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectI.3.6 [Computer Graphics]
dc.subjectMethodology and Techniques
dc.subjectGraphics data structures and data types
dc.subjectI.3.7 [Computer Graphics]
dc.subjectThree Dimensional Graphics and Realism
dc.subjectRaytracing
dc.titleDecoupled Space and Time Sampling of Motion and Defocus Blur for Unified Rendering of Transparent and Opaque Objectsen_US
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