Directional Wave Spectra from Video Images Data and SWAN Model

Authors

  • Muhammad Zikra Department of Ocean Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia
  • Noriaki Hashimoto Department of Maritime Engineering, Kyushu University, Japan
  • Masaru Yamashiro Department of Maritime Engineering, Kyushu University, Japan
  • Kojiro Suzuki Port and Airport Research Institute (PARI), Japan

DOI:

https://doi.org/10.11113/jt.v74.4651

Keywords:

Directional wave spectra, SWAN, video images, pixels

Abstract

In this paper, analysis of directional wave spectra in shallow water area estimated by video images data has been compared with numerical model of SWAN. Estimation of directional wave spectra from video images is based on the Bayesian Directional Method using a group of pixels brightness on the image. For this study, the pixels can be considered equivalent to fixed instruments as wave probe sensor after rectification process. The results show that there is a good agreement between directional wave spectra estimated by video images data and the SWAN model. Both methods estimate similar shape of directional wave spectra in the shallow water. In addition, the energy distribution of directional wave spectra in shallow water is concentrated significantly in frequency and direction. 

References

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Published

2015-05-27

Issue

Vol. 74 No. 5: Special Issue on Ship and Offshore Engineering

Section

Science and Engineering

License

Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.

How to Cite

Directional Wave Spectra from Video Images Data and SWAN Model. (2015). Jurnal Teknologi, 74(5). https://doi.org/10.11113/jt.v74.4651