Underwater sky image as a tool for estimating some inherent optical properties of eutrophic water

摘要

The present work is shown results of estimating the absorption coefficient of water by underwater sky image (Snell's window image). This paper presents theoretical model of the Snell's window image, the algorithm to restore the absorption coefficient of water through the static moments of image, the methodology of performing full-scale measurements and processing obtained data and result of testing offered method on the basis of images obtained in fresh internal eutrophic waters of the Gorky reservoir on the Volga River, characterizing by high concentrations of dissolved organic matter and blue-green algae bloom.