Time Interval Ray Tracing for Motion Blur
| Autor: | Konstantin Shkurko, Erik Brunvand, Daniel Kopta, Ian Mallett, Cem Yuksel |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Computer science
business.industry Astrophysics::High Energy Astrophysical Phenomena Monte Carlo method Motion blur ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 020207 software engineering 02 engineering and technology Iterative reconstruction Computer Graphics and Computer-Aided Design Shutter Signal Processing 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Computer vision Ray tracing (graphics) Computer Vision and Pattern Recognition Cone tracing Artificial intelligence business Software ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | IEEE Transactions on Visualization and Computer Graphics. 24:3225-3238 |
| ISSN: | 2160-9306 1077-2626 |
| DOI: | 10.1109/tvcg.2017.2775241 |
| Popis: | We introduce a new motion blur computation method for ray tracing that provides an analytical approximation of motion blurred visibility per ray. Rather than relying on timestamped rays and Monte Carlo sampling to resolve the motion blur, we associate a time interval with rays and directly evaluate when and where each ray intersects with animated object faces. Based on our simplifications, the volume swept by each animated face is represented using a triangulation of the surface of this volume. Thus, we can resolve motion blur through ray intersections with stationary triangles, and we can use any standard ray tracing acceleration structure without modifications to account for the time dimension. Rays are intersected with these triangles to analytically determine the time interval and positions of the intersections with the moving objects. Furthermore, we explain an adaptive strategy to efficiently shade the intersection intervals. As a result, we can produce noise-free motion blur for both primary and secondary rays. We also provide a general framework for emulating various camera shutter mechanisms and an artistic modification that amplifies the visibility of moving objects for emphasizing the motion in videos or static images. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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