Relativistic Effects for Time-Resolved Light Transport
Adrian Jarabo, Belen Masia, Andreas Velten, Christopher Barsi, Ramesh Raskar, Diego Gutierrez
In Computer Graphics Forum, 34(8), 2015.
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.
Keyword(s): relativistic, time-resolved, transient, Computing methodologies → Rendering, I.3.7: Computing Methodologies - COMPUTER GRAPHICS - Three-Dimensional Graphics and Realism
@article{CGF:CGF12604,
author = {Adrian Jarabo and Belen Masia and Andreas Velten and Christopher Barsi and Ramesh Raskar and Diego Gutierrez},
title = {Relativistic Effects for Time-Resolved Light Transport},
journal = {Computer Graphics Forum},
volume = {34},
number = {8},
pages = {1--12},
year = {2015},
}
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