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- Title
Unstructured Light Fields.
- Authors
Davis, Abe; Levoy, Marc; Durand, Fredo
- Abstract
We present a system for interactively acquiring and rendering light fields using a hand-held commodity camera. The main challenge we address is assisting a user in achieving good coverage of the 4D domain despite the challenges of hand-held acquisition. We define coverage by bounding reprojection error between viewpoints, which accounts for all 4 dimensions of the light field. We use this criterion together with a recent Simultaneous Localization and Mapping technique to compute a coverage map on the space of viewpoints. We provide users with real-time feedback and direct them toward under-sampled parts of the light field. Our system is lightweight and has allowed us to capture hundreds of light fields. We further present a new rendering algorithm that is tailored to the unstructured yet dense data we capture. Our method can achieve piecewise-bicubic reconstruction using a triangulation of the captured viewpoints and subdivision rules applied to reconstruction weights.
- Subjects
LIGHT-field cameras; DIGITAL image processing; COMPUTER graphics; COMPUTER algorithms; IMAGE reconstruction; RENDERING algorithms; SCANNING systems
- Publication
Computer Graphics Forum, 2012, Vol 31, Issue 2pt1, p305
- ISSN
0167-7055
- Publication type
Article
- DOI
10.1111/j.1467-8659.2012.03009.x