Title :
Reconstruction and enhancement of sea-bed topography by using 2-D signal processing
Author :
Wong, H. ; Antoniou, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
The application of 2D signal processing to profiles collected in airborne laser bathymetry is investigated. The processing involves a type of 2D filtering for the suppression of impulsive noise and the application of a sophisticated 2D interpolation technique for the reconstruction of bathymetric data. The reconstructed profiles are further enhanced by two adaptive procedures: one involves 2D power spectral analysis of the data on a block-by-block basis and the other concerns the estimation of the data on a point-by-point basis. Results show that each type of filtering enhances the accuracy of bathymetric measurement quite significantly
Keywords :
bathymetry; geophysics computing; laser ranging; oceanographic techniques; optical information processing; optical radar; remote sensing by laser beam; seafloor phenomena; bathymetry; block-by-block basis; enhancement; filtering; geophysical measurement technique; impulsive noise; interpolation; laser remote sensing; ocean sea; point-by-point basis; profiling laser; seabed topography; seafloor topography; suppression; two dimensional signal processing; Acoustic noise; Acoustic scattering; Application software; Filtering; Geologic measurements; Laser noise; Oceanographic techniques; Sea measurements; Signal processing; Surfaces;
Conference_Titel :
OCEANS '93. Engineering in Harmony with Ocean. Proceedings
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-1385-2
DOI :
10.1109/OCEANS.1993.326123
