Volume XXXIX-B8
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B8, 159-164, 2012
https://doi.org/10.5194/isprsarchives-XXXIX-B8-159-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B8, 159-164, 2012
https://doi.org/10.5194/isprsarchives-XXXIX-B8-159-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

  28 Jul 2012

28 Jul 2012

SHALLOW-WATER BATHYMETRY OVER VARIABLE BOTTOM TYPES USING MULTISPECTRAL WORLDVIEW-2 IMAGE

G. Doxani1, M. Papadopoulou1, P. Lafazani1, C. Pikridas2, and M. Tsakiri-Strati1 G. Doxani et al.
  • 1Dept. Cadastre, Photogrammetry and Cartography, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
  • 2Dept. Geodesy and Topography, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Keywords: Multispectral Bathymetry, Linear Regression, Radiometric Correction, GPS, Echo Sounder

Abstract. Image processing techniques that involve multispectral remotely sensed data are considered attractive for bathymetry applications as they provide a time- and cost-effective solution to water depths estimation. In this paper the potential of 8-bands image acquired by Worldview-2 satellite in providing precise depth measurements was investigated. Multispectral image information was integrated with available echo sounding and GPS data for the determination of the depth in the area of interest. In particular the main objective of this research was to evaluate the effectiveness of high spatial and spectral resolution of the new imagery data on water depth measurements using the Lyzenga linear bathymetry model. The existence of sea grass in a part of the study area influenced the linear relationship between water reflectance and depth. Therefore the bathymetric model was applied in three image parts: an area with sea grass, a mixed area and a sea grass-free area. In the last two areas the model worked successfully supported by the multiplicity of the imagery bands.