.. highlight:: sh ****************************** Calibrating the Camera Network ****************************** Calibration of the camera network is done in several stages. Part of it is done in the lab using a custom calibration setup. Another part is done in the field using the sunphotometer of the `Aeronet system `_. .. _calibration-setup: .. figure:: images/calibration_setup.png Camera calibration setup. Geometric Calibration ===================== Geometric calibration is done Intrinsic Calibration --------------------- Intrinsic calibration is done using a checkboard target and using the `pyfisheye `_ package which is based on the opencv fisheye calibration toolbox. Extrinsic Calibration --------------------- Extrinsic calibration is the determination of the orientation of the camera in the global coordinates system. It is based on tracking the sun position. Radiometric Calibration ======================= Each camera is calibrated relation the a custom calibration setup (Figure :num:`calibration-setup`).