Wheather analysis system based on sky images taken from the earth

Meteorological analysis has been typically associated to objective measures (temperature, himidity, air pressure, etc.) and observer’s visual subjective analysis of the sky as cloudiness. Cloud amount influences strongly the radiation equilibrium, while coudiness and fod can be seen as indicators of the type and intensity of locally active thermal processes. Land-based cloud analysis shows different local details which are unvailable in operational satellite imagery [14]. In addition, accoring to the available state of the art, cloudiness and fog analysis from the earth has not yet been automatized. In this study, an image based method to obtain automatic cloudiness quantification and fog detection is explained.