Title :
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
fDate :
30 Aug-3 Sep 1992
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;
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
DOI :
10.1109/ICPR.1992.201952
