Abstract
The study of the sea depths in order to ensure safety, the effective use of underwater resourcesis an urgent task. The first part of the article briefly considers the physical phenomena andlimitations that arise during the propagation of electromagnetic waves in the visible range in theunderwater environment. It is shown that underwater vision systems (as a class of specializedtechnical vision systems - TVS) based on conventional CCD matrices face a number of fundamentallimitations in terms of improving the efficiency of functioning in natural water of low transparency.In particular, the use of artificial light sources as part of underwater vision systems in turbidwater leads to the occurrence of backpropagation interference (BPR), which leads to spuriousillumination of the optical device matrix. As a promising direction in the development of underwatervision systems, it is proposed to use methods for subtracting POR based on information aboutthe polarization of light. In the review part of the article, the latest achievements in this field areconsidered. The main part of the article presents the methodology for studying the proposed methodfor subtracting the POR based on a comparison of the results obtained by processing imageswith known methods for estimating the Stokes vector parameters DoLP and AoLP, which allowobtaining information about the degree of polarization and the prevailing polarization angles ofthe scene, respectively. The experimentally obtained results of processing an underwater scene inwater of varying degrees of turbidity using the DoLP, AoLP algorithms and the proposed methodsfor subtracting the POR are presented. Distinctive features are the use of four rather than twopolarization directions in calculations, as well as the original mathematical apparatus for processingsignals from the machine vision camera matrix.
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