Optical means of measurement of surface waves characteristics provide better spatial and temporal resolution than other methods, but they face definite difficulties, while converting results of the indirect measurements to absolute levels of the waves. This publication solves this problem, to some extent. In this paper we propose an optical method for measuring the 3D power spectral density of the surface waves and the space-time samples of profiles of the waves. The method involves, firstly, synchronous recording of brightness field over a patch of the rough surface and measurement of surface oscillations in one or more points, and secondly, filtering of the image spatial spectrum and the filter parameters are selected to maximize correlation of surface oscillations that are reconstructed and measured in one or two points. In addition to the measurement procedure, the paper provides experimental results on the measurement of multidimensional spectra of roughness, which are, in common, in agreement with theoretical expectations and with the results of other authors.

本文提出了一种光学方法来测量波浪表面的3D功率谱密度和波轮廓的时空样本，通过同步记录粗糙表面区域的亮度场和测量一个或多个点的表面振荡，并选择滤波参数来最大化恢复并测量的表面振荡的相关性以解决光学测量表面波浪特性遇到的间接测量结果转换问题。实验结果表明，本方法的测量结果与理论期望和其他作者的结果基本一致。

基于海面视频图像处理的三维风波谱测量方法