Articles | Volume 9, issue 9
https://doi.org/10.5194/amt-9-4279-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-9-4279-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
05 Sep 2016
Research article |
| 05 Sep 2016
Sky camera geometric calibration using solar observations
Bryan Urquhart
Department of Mechanical and Aerospace Engineering, University of California, San Diego, USA
Ben Kurtz
Department of Mechanical and Aerospace Engineering, University of California, San Diego, USA
Department of Mechanical and Aerospace Engineering, University of California, San Diego, USA
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Cited
16 citations as recorded by crossref.
- Parameterizing anisotropic reflectance of snow surfaces from airborne digital camera observations in Antarctica T. Carlsen et al. 10.5194/tc-14-3959-2020
- Orthorectification of Fisheye Image under Equidistant Projection Model G. Zhou et al. 10.3390/rs14174175
- 多波段鱼眼镜头相机实验室几何定标方法 王. WANG Caixia et al. 10.3788/gzxb20245308.0811001
- Geometric calibration of all-sky cameras using sun and moon positions: A comprehensive analysis N. Blum et al. 10.1016/j.solener.2025.113476
- Cloud tomography applied to sky images: A virtual testbed F. Mejia et al. 10.1016/j.solener.2018.10.023
- Angular Calibration of Visible and Infrared Binocular All-Sky-View Cameras Using Sun Positions W. Xie et al. 10.3390/rs13132455
- Luminance calibration of a full sky HDR imaging system using sky scanner measurements I. García et al. 10.1016/j.solener.2022.04.048
- A network of sky imagers for spatial solar irradiance assessment Y. Chu et al. 10.1016/j.renene.2022.01.032
- Short-term peer-to-peer solar forecasting in a network of photovoltaic systems B. Elsinga & W. van Sark 10.1016/j.apenergy.2017.09.115
- Airborne measurements of directional reflectivity over the Arctic marginal sea ice zone S. Becker et al. 10.5194/amt-15-2939-2022
- Passive Polarized Vision for Autonomous Vehicles: A Review J. Serres et al. 10.3390/s24113312
- Ice crystal characterization in cirrus clouds II: radiometric characterization of HaloCam for the quantitative analysis of halo displays L. Forster et al. 10.5194/amt-13-3977-2020
- Cloud base height estimates from sky imagery and a network of pyranometers G. Wang et al. 10.1016/j.solener.2019.03.101
- ORION software tool for the geometrical calibration of all-sky cameras J. Antuña-Sánchez et al. 10.1371/journal.pone.0265959
- Measuring diffuse, direct, and global irradiance using a sky imager B. Kurtz & J. Kleissl 10.1016/j.solener.2016.11.032
- Development of a sky imaging system for short-term solar power forecasting B. Urquhart et al. 10.5194/amt-8-875-2015
14 citations as recorded by crossref.
- Parameterizing anisotropic reflectance of snow surfaces from airborne digital camera observations in Antarctica T. Carlsen et al. 10.5194/tc-14-3959-2020
- Orthorectification of Fisheye Image under Equidistant Projection Model G. Zhou et al. 10.3390/rs14174175
- 多波段鱼眼镜头相机实验室几何定标方法 王. WANG Caixia et al. 10.3788/gzxb20245308.0811001
- Geometric calibration of all-sky cameras using sun and moon positions: A comprehensive analysis N. Blum et al. 10.1016/j.solener.2025.113476
- Cloud tomography applied to sky images: A virtual testbed F. Mejia et al. 10.1016/j.solener.2018.10.023
- Angular Calibration of Visible and Infrared Binocular All-Sky-View Cameras Using Sun Positions W. Xie et al. 10.3390/rs13132455
- Luminance calibration of a full sky HDR imaging system using sky scanner measurements I. García et al. 10.1016/j.solener.2022.04.048
- A network of sky imagers for spatial solar irradiance assessment Y. Chu et al. 10.1016/j.renene.2022.01.032
- Short-term peer-to-peer solar forecasting in a network of photovoltaic systems B. Elsinga & W. van Sark 10.1016/j.apenergy.2017.09.115
- Airborne measurements of directional reflectivity over the Arctic marginal sea ice zone S. Becker et al. 10.5194/amt-15-2939-2022
- Passive Polarized Vision for Autonomous Vehicles: A Review J. Serres et al. 10.3390/s24113312
- Ice crystal characterization in cirrus clouds II: radiometric characterization of HaloCam for the quantitative analysis of halo displays L. Forster et al. 10.5194/amt-13-3977-2020
- Cloud base height estimates from sky imagery and a network of pyranometers G. Wang et al. 10.1016/j.solener.2019.03.101
- ORION software tool for the geometrical calibration of all-sky cameras J. Antuña-Sánchez et al. 10.1371/journal.pone.0265959
Latest update: 25 Jul 2025
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.
A model relating the position of objects in the 3-D world to their pixel coordinates has been...
