HYDROACOUSTICS
ANNUAL JOURNAL |
START | NEW VOL 20 | SEARCH | STATISTICS | PAS - GDANSK DIVISION |
pp. 41-46, vol. 16, 2013 Jerzy Demkowicz Gdansk University of Technology, Gdansk, Poland Key words: data compression; efficient processing; sea floor imaging Abstract: Multibeam sonar records feature high vertical and horizontal resolution. Interpolating
and approximating and eventually displaying scattered 3D raster data of high volume leads
to some difficulties related to a computer processing power. The paper presents some
advantages of using hierarchical splines. The proposed approach consists of two stages:
firstly, all acquired multibeam sonar raw data are interpolated with high density uniform
spline interpolation. The knots and control points of interpolated network are saved for
defined resolution level. In the next stage preprocessed high resolution data are combined
with low resolution data sets following prior knot decimation process. Such approach allow
real time 3D displaying of multibeam sonar data for different zoom levels.
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