Detection of direction and wavelength of ocean wave by power spectrum of ocean wave image

Author

Huiming, Tang ; Shengrong, Xu

Author_Institution

Center of Anal. & Meas., Zhejiang Univ., China

fYear

1992

fDate

30 Aug-3 Sep 1992

Firstpage

164

Lastpage

166

Abstract

The detection of ocean waves can be used to monitor ocean and to forecast wind-storms upon the ocean surface. The paper presents a method for extracting wave direction and wavelength of ocean waves from a sea image. Based on the assumption that the power spectrum of an ocean wave can be thought of as a thin plane consisting of discrete particles, the wave direction is on the axis direction which minimizes the moment of inertia. By finding the maximum amplitude of mean spectrum within a neighborhood along this axis direction, the location of the main wave and its wavelength can be determined immediately. The method is tested on an air photo of the East Sea of China

Keywords

atmospheric techniques; image processing; ocean waves; oceanographic techniques; remote sensing; storms; weather forecasting; wind; image processing; ocean wave image; oceanographic techniques; power spectrum; remote sensing; sea image; wave direction; wavelength; weather forecasting; wind-storms; Image analysis; Monitoring; Ocean waves; Power measurement; Production facilities; Sea measurements; Sea surface; Surface waves; Testing; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Pattern Recognition, 1992. Vol.III. Conference C: Image, Speech and Signal Analysis, Proceedings., 11th IAPR International Conference on

Conference_Location

The Hague

Print_ISBN

0-8186-2920-7

Type

conf

DOI

10.1109/ICPR.1992.201952

Filename

201952