Bathymetry Determination From Marine Radar Image Sequences Using the Hilbert Transform

Li Chung Wu; Dong Jiing Doong; Jong Hao Wang

doi:10.1109/LGRS.2017.2668383

Bathymetry Determination From Marine Radar Image Sequences Using the Hilbert Transform

Li Chung Wu, Dong Jiing Doong, Jong Hao Wang

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

This letter presents an image processing technique based on the theory of the Hilbert transform to determine the coastal bathymetry from marine radar image sequences. Use of the Hilbert transform enables the difficulties and complications of inhomogeneous image analysis to be avoided. In addition, a number of steps and complex computations can be avoided using the numerical algorithm of the Hilbert transform. Because the Hilbert transform is suitable for only monocomponent signals, we first applied the image procedure to decompose the irregular wave patterns into different single wave period images. Analysis of the simulated wave field and radar image sequences demonstrated that there was a high correlation between the estimated depths and reference depths. The causes for errors in the bathymetry estimations are also discussed.

Original language	English
Article number	7872405
Pages (from-to)	644-648
Number of pages	5
Journal	IEEE Geoscience and Remote Sensing Letters
Volume	14
Issue number	5
DOIs	https://doi.org/10.1109/LGRS.2017.2668383
Publication status	Published - 2017 May

All Science Journal Classification (ASJC) codes

Geotechnical Engineering and Engineering Geology
Electrical and Electronic Engineering

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abstract = "This letter presents an image processing technique based on the theory of the Hilbert transform to determine the coastal bathymetry from marine radar image sequences. Use of the Hilbert transform enables the difficulties and complications of inhomogeneous image analysis to be avoided. In addition, a number of steps and complex computations can be avoided using the numerical algorithm of the Hilbert transform. Because the Hilbert transform is suitable for only monocomponent signals, we first applied the image procedure to decompose the irregular wave patterns into different single wave period images. Analysis of the simulated wave field and radar image sequences demonstrated that there was a high correlation between the estimated depths and reference depths. The causes for errors in the bathymetry estimations are also discussed.",

author = "Wu, {Li Chung} and Doong, {Dong Jiing} and Wang, {Jong Hao}",

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AU - Doong, Dong Jiing

AU - Wang, Jong Hao

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AB - This letter presents an image processing technique based on the theory of the Hilbert transform to determine the coastal bathymetry from marine radar image sequences. Use of the Hilbert transform enables the difficulties and complications of inhomogeneous image analysis to be avoided. In addition, a number of steps and complex computations can be avoided using the numerical algorithm of the Hilbert transform. Because the Hilbert transform is suitable for only monocomponent signals, we first applied the image procedure to decompose the irregular wave patterns into different single wave period images. Analysis of the simulated wave field and radar image sequences demonstrated that there was a high correlation between the estimated depths and reference depths. The causes for errors in the bathymetry estimations are also discussed.

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Bathymetry Determination From Marine Radar Image Sequences Using the Hilbert Transform

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