Strukturbaum
| Publikation |
| Autoren des Beitrags | |||||||||||
| Titel des Beitrags | Optical lens-shift design for increasing spatial resolution of 3D ToF cameras | ||||||||||
| Titel veröffentlicht in ... | Advanced Optical Technologies 2017 | Verlag | De Gruyter | ||||||||
| Erscheinungsjahr | 2017 | Seite (von - bis) | 8 | Publikations-Art | Peer-Reviewed Article | Herausgeber/Betreuer | De Gruyter | ||||
| URL : | https://doi.org/10.1515/aot-2016-0063 | ||||||||||
| Abstract : | Sensor resolution of 3D time-of-flight (ToF) outdoor-capable cameras is strongly limited because of its large pixel dimensions. Computational imaging permits enhancement of the optical systems resolving power without changing physical sensor properties. Super-resolution (SR) algorithms superimpose several
sub-pixel-shifted low-resolution (LR) images to overcome the systems limited spatial sampling rate. In this paper, we propose a novel opto-mechanical system to implement sub-pixel shifts by moving an optical lens. This method is more flexible in terms of implementing SR techniques than current sensor-shift approaches. In addition, we describe a SR observation model that has been optimized for the use of LR 3D ToF cameras. A state-of-the-art iteratively reweighted minimization algorithm executes the SR process. It is proven that our method achieves nearly the same resolution increase as if the pixel area would be halved physically. Resolution enhancement is measured objectively for amplitude images of a static object scene. |
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| Einrichtungen |
Institut für Angewandte Forschung (IAF)
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| Beteiligte Personen |
Eberhardt
, Jörg
Prof.
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| Projekte |
Wissenschaftliche Veröffentlichungen |
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