Identification of period and direction of monochromatic waves through the processing of optical images

Authors

  • Henrique Rapizo Universidade Federal do Rio de Janeiro; Laboratório de Instrumentação Oceanográfica; Programa de Engenharia Naval e Oceânica
  • Victor D'Ávila Universidade Estadual do Rio de Janeiro; Faculdade de Oceanografia
  • Nelson Violante-Carvalho Universidade Federal do Rio de Janeiro; Laboratório de Instrumentação Oceanográfica; Programa de Engenharia Naval e Oceânica
  • Uggo Pinho Petrobras- Segmento de Oceanografia Operacional
  • Carlos Eduardo Parente Universidade Federal do Rio de Janeiro; Laboratório de Instrumentação Oceanográfica; Programa de Engenharia Naval e Oceânica

DOI:

https://doi.org/10.11137/2014_1_36_45

Abstract

A new methodology to estimate the period and direction of monochromatic surface gravity waves is presented based on the processing of a sequence of images. The analysis focuses on the spatial-temporal variability of brightness on the image plane. One camera only is employed to record the water surface. The main motive is to come up with a simplified and practical configuration which allows its operational implementation either on the laboratory or on oil platforms or on top of buildings. The promising results correspond to experiments in a monochromatic wave tank. The image processing technique has proven to be a valuable tool for wave measurements.

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Published

2014-06-01

Issue

Vol. 37 No. 1 (2014)

Section

não definida

License

This journal is licensed under a Creative Commons — Attribution 4.0 International — CC BY 4.0, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.