Progressive Transient Photon Beams
Abstract
In this work, we introduce a novel algorithm for transient rendering in participating media. Our method is consistent, robust and is able to generate animations of time‐resolved light transport featuring complex caustic light paths in media. We base our method on the observation that the spatial continuity provides an increased coverage of the temporal domain, and generalize photon beams to transient‐state. We extend stead‐state photon beam radiance estimates to include the temporal domain. Then, we develop a progressive variant of our approach which provably converges to the correct solution using finite memory by averaging independent realizations of the estimates with progressively reduced kernel bandwidths. We derive the optimal convergence rates accounting for space and time kernels, and demonstrate our method against previous consistent transient rendering methods for participating media.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 19, 2019
- Source ID
- 10.1111/cgf.13600
Entities
People
- Adrián Jarabo
- Diego Gutierrez
- Ibón Guillén
- Julio Marco
- Wojciech Jarosz
Organizations
- Dartmouth College
- Defense Advanced Research Projects Agency
- Gobierno de Aragon
- University of Zaragoza