Multibeam sonar records data decimation using hierarchical spline interpolation

• Autorzy: Demkowicz J.
• Języki publikacji: EN

Abstrakty

EN

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.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2013
• Tom: Vol. 16
• Strony: 41--46
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Demkowicz J.

• Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland

Bibliografia

• [1] F.W. Wiley at al., “Hierarchical Spline Approximation”, CiteSeer.IST, 2003.
• [2] J. Demkowicz, M. Moszyński, A. Stepnowski, “Application of splines and wavelets along with TIN decimation to 3D imaging of seafloor from multibeam sonar data”. Proceedings of the Sixth European Conference on Underwater Acoustics. ECUA 2002. Gdańsk, 24-27 June 2002.
• [3] N.K. Govil, ”Frontiers in Interpolation and Approximation”, Chapman&Hall/CRC, 2006
• [4] M. Unser, “Splines. A Perfect Fit for Signal and Image Processing”, IEEE Signal Processing Magazin, Nov. 1999
• [5] J. Demkowicz, “Hierarchical spline technique application for real time 3D displaying of seafloor using multibeam sonar data”, J Acoust Soc Am. 2008 May ;123 (5):362618531568
• [6] R. H. Bartels, J. C. Beatty, and B. Barsky. An Introduction to Splines for Use in Computer Graphics and Geometric Modeling. Morgan Kaufmann, 1979.
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• [9] D. R. Forsey and R. H. Bartels. Surface fitting with hierarchical splines. ACM Transactions of Graphics, 14(2):134–161, April 1995.
• [10] S. Lee, G. Wolberg, and S. Y. Shin. Scattered data interpolation with multilevel bsplines. IEEE Transactions on Visualization and Computer Graphics, 3(3):228–244, 1997.