Sky camera geometric calibration using solar observations

Urquhart, Bryan; Kurtz, Ben; Kleissl, Jan

doi:https://doi.org/10.5194/amt-9-4279-2016

Articles | Volume 9, issue 9

Atmos. Meas. Tech., 9, 4279–4294, 2016

https://doi.org/10.5194/amt-9-4279-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Atmos. Meas. Tech., 9, 4279–4294, 2016

https://doi.org/10.5194/amt-9-4279-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 9

Research article 05 Sep 2016

Research article | 05 Sep 2016

Sky camera geometric calibration using solar observations

Bryan Urquhart et al.

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Final revised paper (published on 05 Sep 2016)
Preprint (discussion started on 15 Jan 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Sky camera geometric calibration using solar observations B. Urquhart, B. Kurtz, and J. Kleissl', Roger Clay, 27 Jan 2016
RC2: 'Referee Comment (RC): AMTD-2015-277', Anonymous Referee #2, 04 Feb 2016
AC1: 'Final Author Comments', Bryan Urquhart, 09 Apr 2016

Short summary

A model relating the position of objects in the 3-D world to their pixel coordinates has been developed for a fixed-focal length fisheye lens camera. An associated automated method to calibrate model parameters has been developed for a daytime skyward-pointing camera. The position of the sun throughout the day is used as input to the calibration algorithm. The accuracy of the calibration was found to be on the same order as the accuracy of sun position detection in an image.