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Relativistic Effects for Time-Resolved Light Transport

Author(s)
Jarabo, Adrian; Masia Corcoy, Belen; Velten, Andreas; Barsi, Christopher; Raskar, Ramesh; Gutierrez, Diego; ... Show more Show less
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Abstract
We present a real-time framework which allows interactive visualization of relativistic effects for time-resolved light transport. We leverage data from two different sources: real-world data acquired with an effective exposure time of less than 2 picoseconds, using an ultra-fast imaging technique termed femto-photography, and a transient renderer based on ray-tracing. We explore the effects of time dilation, light aberration, frequency shift and radiance accumulation by modifying existing models of these relativistic effects to take into account the time-resolved nature of light propagation. Unlike previous works, we do not impose limiting constraints in the visualization, allowing the virtual camera to explore freely a reconstructed 3D scene depicting dynamic illumination. Moreover, we consider not only linear motion, but also acceleration and rotation of the camera. We further introduce, for the first time, a pinhole camera model into our relativistic rendering framework, and account for subsequent changes in focal length and field of view as the camera moves through the scene.
Date issued
2015-05
URI
http://hdl.handle.net/1721.1/103759
Department
Massachusetts Institute of Technology. Media Laboratory; Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Journal
Computer Graphics Forum
Publisher
John Wiley & Sons
Citation
Jarabo, Adrian, Belen Masia, Andreas Velten, Christopher Barsi, Ramesh Raskar, and Diego Gutierrez. “Relativistic Effects for Time-Resolved Light Transport.” Computer Graphics Forum 34, no. 8 (May 13, 2015): 1–12.
Version: Author's final manuscript
ISSN
01677055

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