A Fisheye Camera System for Polarisation Detection on UAVs

Stürzl W, Carey NE (2012)
In: Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2. Fusiello A, Murino V, Cucchiara R (Eds); Lecture Notes in Computer Science, 7584. Berlin, Heidelberg: Springer: 431-440.

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Editor
Fusiello, Andrea ; Murino, Vittorio ; Cucchiara, Rita
Abstract
We present a light-weight polarisation sensor that consists of four synchronised cameras equipped with differently oriented polarisers and fisheye lenses allowing us to image the whole sky hemisphere. Due to its low weight and compact size it is well-suited as a biomimetic sensor on-board a UAV. We describe efficient methods for reconstruction of the full-sky polarisation pattern and estimation of sun position. In contrast to state-of-the art polarisation systems for UAVs that estimate sun azimuth only, our approach can determine sun elevation as well, even in the presence of clouds and for significant pitch and roll angles of the UAV. The calibration and registration of the four fisheye cameras is achieved by extending an existing omni-directional calibration toolbox to multi-camera calibration. We present examples of full-sky reconstruction of the polarisation pattern as well as an analysis of the error in the sun position estimate. In addition, we performed a preliminary test on-board a quadcopter.
Publishing Year
Conference
European Conference on Computer Vision (ECCV)
Location
Florence, Italy
Conference Date
2012-10-07 – 2012-10-13
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Stürzl W, Carey NE. A Fisheye Camera System for Polarisation Detection on UAVs. In: Fusiello A, Murino V, Cucchiara R, eds. Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2. Lecture Notes in Computer Science. Vol 7584. Berlin, Heidelberg: Springer; 2012: 431-440.
Stürzl, W., & Carey, N. E. (2012). A Fisheye Camera System for Polarisation Detection on UAVs. In A. Fusiello, V. Murino, & R. Cucchiara (Eds.), Lecture Notes in Computer Science: Vol. 7584. Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2 (pp. 431-440). Berlin, Heidelberg: Springer.
Stürzl, W., and Carey, N. E. (2012). “A Fisheye Camera System for Polarisation Detection on UAVs” in Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2, Fusiello, A., Murino, V., and Cucchiara, R. eds. Lecture Notes in Computer Science, vol. 7584, (Berlin, Heidelberg: Springer), 431-440.
Stürzl, W., & Carey, N.E., 2012. A Fisheye Camera System for Polarisation Detection on UAVs. In A. Fusiello, V. Murino, & R. Cucchiara, eds. Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2. Lecture Notes in Computer Science. no.7584 Berlin, Heidelberg: Springer, pp. 431-440.
W. Stürzl and N.E. Carey, “A Fisheye Camera System for Polarisation Detection on UAVs”, Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2, A. Fusiello, V. Murino, and R. Cucchiara, eds., Lecture Notes in Computer Science, vol. 7584, Berlin, Heidelberg: Springer, 2012, pp.431-440.
Stürzl, W., Carey, N.E.: A Fisheye Camera System for Polarisation Detection on UAVs. In: Fusiello, A., Murino, V., and Cucchiara, R. (eds.) Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2. Lecture Notes in Computer Science. 7584, p. 431-440. Springer, Berlin, Heidelberg (2012).
Stürzl, Wolfgang, and Carey, Nicole Erin. “A Fisheye Camera System for Polarisation Detection on UAVs”. Computer Vision – ECCV 2012. Workshops and Demonstrations. ECCV 2012. Proceedings, Pt. 2. Ed. Andrea Fusiello, Vittorio Murino, and Rita Cucchiara. Berlin, Heidelberg: Springer, 2012.Vol. 7584. Lecture Notes in Computer Science. 431-440.
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