Continuous sky digitalization using images from an all-sky camera

Abstract

The designed networked system captures and stores high and medium resolution sky images every 2 seconds. The IP camera employed is low-cost, omnidirectional, and its images are accessible from any point with Internet connection, both in real time and to a database, thanks to the configuration of a VPN network. The images obtained by the camera can be utilised for a variety of purposes but are of particular interest for those applications where a large volume of separate images is required for the characteristics of the sky, as the system also provides an innovative method of measuring solar energy, which provides an unambiguous view of the cloud state on any given day.