High-Quality Spatio-Temporal Rendering using Semi-Analytical Visibility
Författare
Redaktör
- Hugues Hoppe
Summary, in English
We present a novel visibility algorithm for rendering motion blur with per-pixel anti-aliasing. Our algorithm uses a number of line samples over a rectangular group of pixels, and together with the time dimension, a two-dimensional spatio-temporal visibility problem needs to be solved per line sample. In a coarse culling step, our algorithm first uses a bounding volume hierarchy to rapidly remove geometry that do not overlap with the current line sample. For the remaining triangles, we approximate each triangle's depth function, along the line and along the time dimension, with a number of patch triangles. We resolve for the final color using an analytical visibility algorithm with depth sorting, simple occlusion culling, and clipping. Shading is decoupled from visibility, and we use a shading cache for efficient reuse of shaded values. In our results, we show practically noise-free renderings of motion blur with high-quality spatial anti-aliasing and with competitive rendering times. We also demonstrate that our algorithm, with some adjustments, can be used to accurately compute motion blurred ambient occlusion.
Avdelning/ar
Publiceringsår
2011
Språk
Engelska
Sidor
1-54
Publikation/Tidskrift/Serie
ACM Transactions on Graphics
Volym
30
Issue
4
Länkar
Dokumenttyp
Konferensbidrag
Förlag
Association for Computing Machinery (ACM)
Ämne
- Computer Science
Nyckelord
- analytical visibility
- anti-aliasing
- ambient occlusion
- motion blur
Conference name
41th International Conference on Computer Graphics and Interactive Techniques, 2014
Conference date
2014-08-10 - 2014-08-14
Conference place
Vancouver, Canada
Status
Published
Forskningsgrupp
- Computer Graphics
ISBN/ISSN/Övrigt
- ISSN: 0730-0301