A Wide-Field-of-View Monocentric Light Field Camera
Autor: | Donald G. Dansereau, Joseph E. Ford, Glenn M. Schuster, Gordon Wetzstein |
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Rok vydání: | 2017 |
Předmět: |
Microlens
Light-field camera Pixel Computer science business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 020207 software engineering 02 engineering and technology 01 natural sciences law.invention 010309 optics Entrance pupil Lens (optics) law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Computer vision Artificial intelligence Image sensor business Image resolution Light field |
Zdroj: | CVPR |
Popis: | Light field (LF) capture and processing are important in an expanding range of computer vision applications, offering rich textural and depth information and simplification of conventionally complex tasks. Although LF cameras are commercially available, no existing device offers wide field-of-view (FOV) imaging. This is due in part to the limitations of fisheye lenses, for which a fundamentally constrained entrance pupil diameter severely limits depth sensitivity. In this work we describe a novel, compact optical design that couples a monocentric lens with multiple sensors using microlens arrays, allowing LF capture with an unprecedented FOV. Leveraging capabilities of the LF representation, we propose a novel method for efficiently coupling the spherical lens and planar sensors, replacing expensive and bulky fiber bundles. We construct a single-sensor LF camera prototype, rotating the sensor relative to a fixed main lens to emulate a wide-FOV multi-sensor scenario. Finally, we describe a processing toolchain, including a convenient spherical LF parameterization, and demonstrate depth estimation and post-capture refocus for indoor and outdoor panoramas with 15 x 15 x 1600 x 200 pixels (72 MPix) and a 138° FOV. |
Databáze: | OpenAIRE |
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