Vol. 12, issue 12, article # 12

pdf Veber V. L. Information Retrieval of Rough Water Surface Slope Distribution Based on the "Grid" Test-Object Image. // Atmospheric and oceanic optics. 1999. V. 12. No. 12. P. 1079-1083.
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A laboratory method of rough water surface diagnostics based on the use of a grid test-object is considered. The optical image of the object consists of a set of distorted lines with randomly arranged nodes. In the case of topological correspondence between the image and object, each node in the grid image corresponds to a node on the object, which permits one to easily identify the node. It is shown that based on the nodal coordinates in the distorted and undistorted image, one can determine the magnitude and direction of the surface slope at the point corresponding to the node in the distorted image. The theoretical prerequisites of the method are considered and results of numerical calculations are presented.