Cost-effective multi-camera array for high quality video with very high dynamic range

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Keinert J, Wetzel M, Schöberl M, Schäfer P, Zilly F, Bätz M, Foessel S, Kaup A
Publisher: SPIE
Publication year: 2014
Volume: 9023
ISBN: 9780819499400
Language: English


Abstract


Temporal bracketing can create images with higher dynamic range than the underlying sensor. Unfortunately, moving objects cause disturbing artifacts. Moreover, the combination with high frame rates is almost unachievâ-able since a single video frame requires multiple sensor readouts. The combination of multiple synchronized side-by-side cameras equipped with different attenuation filters promises a remedy, since all exposures can be performed at the same time with the same duration using the playout video frame rate. However, a disparity correction is needed to compensate the spatial displacement of the cameras. Unfortunately, the requirements for a high quality disparity correction contradict the goal to increase dynamic range. When using two cameras, disparity correction needs objects to be properly exposed in both cameras. In contrast, a dynamic range inâ-crease needs the cameras to capture different luminance ranges. As this contradiction has not been addressed in literature so far, this paper proposes a novel solution based on a three camera setup. It enables accurate deâ-termination of the disparities and an increase of the dynamic range by nearly a factor of two while still limiting costs. Compared to a two camera solution, the mean opinion score (MOS) is improved by 13.47 units in average for the Middleburry images. © 2014 SPIE-IS and T.


FAU Authors / FAU Editors

Bätz, Michel
Lehrstuhl für Multimediakommunikation und Signalverarbeitung
Kaup, André Prof. Dr.-Ing.
Lehrstuhl für Multimediakommunikation und Signalverarbeitung
Schöberl, Michael
Lehrstuhl für Multimediakommunikation und Signalverarbeitung


External institutions
Fraunhofer-Institut für Integrierte Schaltungen (IIS)


How to cite

APA:
Keinert, J., Wetzel, M., Schöberl, M., Schäfer, P., Zilly, F., Bätz, M.,... Kaup, A. (2014). Cost-effective multi-camera array for high quality video with very high dynamic range. In Proceedings of the Digital Photography X. San Francisco, CA, US: SPIE.

MLA:
Keinert, Joachim, et al. "Cost-effective multi-camera array for high quality video with very high dynamic range." Proceedings of the Digital Photography X, San Francisco, CA SPIE, 2014.

BibTeX: 

Last updated on 2019-20-04 at 16:14