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High resolution topobathymetry using a Pleiades-1 triplet: Moorea Island in 3D

Publication ,  Journal Article
Collin, A; Hench, JL; Pastol, Y; Planes, S; Thiault, L; Schmitt, RJ; Holbrook, SJ; Davies, N; Troyer, M
Published in: Remote Sensing of Environment
April 1, 2018

Worldwide the coastal land-sea interface is increasingly subject to natural and anthropogenic hazards. Monitoring this crucial interface may be addressed with satellite imagery as a cost-efficient mapping solution. Topography and bathymetry, defining the structural complexity of the coast, are commonly studied separately given specific thematic and methodological contexts, yet many science questions and societal challenges require an integrated approach (e.g., coastal inundation). In such cases, triplet multispectral imagery represents an affordable solution based on a single satellite product. Here we examine how Pleiades-1 triplet imagery may be used to retrieve a seamless and accurate topobathymetry digital surface model (DSM, from −20 to 1207 m) over an entire, socio-ecologically complex island: Moorea, French Polynesia. Creation of the topography DSMs was based on stereo and tri-stereo photogrammetry, and the bathymetry DSMs relied on quasi-nadiral multispectral data subject to light/water interaction modelling. Results were compared with over 3.9 million airborne LiDAR topobathymetry measurements to quantify how the spatio-spectral mode, the third imagery, and the level of radiometric correction act on two- and three-dimensional accuracy. Horizontal accuracy of the tri-stereo panchromatic dataset (ERMSE = 4.22 and NRMSE = 7.59 m) was better than the multispectral (ERMSE = 5.06 and NRMSE = 7.51 m) dataset. Topography point cloud density increased by a factor of three in the tri-stereo panchromatic (9.11 points/m2) or multispectral (0.23 points/m2) datasets. Topography vertical accuracy enhanced with tri-stereo + level-1 radiometric correction (RMSE = 7.40 m) for panchromatic and with stereo + level-1/-2 radiometric correction (RMSE = 7.77/7.77 m) as well as tri-stereo without radiometric correction (RMSE = 7.85 m) for multispectral datasets. Bathymetry vertical accuracy improved with level-2 (atmospheric) correction (RMSE = 0.83 m). Topobathymetry DSM derived from this optimized method has a wide spectrum of applications along coastal margins.

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Published In

Remote Sensing of Environment

DOI

ISSN

0034-4257

Publication Date

April 1, 2018

Volume

208

Start / End Page

109 / 119

Related Subject Headings

  • Geological & Geomatics Engineering
  • 37 Earth sciences
  • 0909 Geomatic Engineering
  • 0406 Physical Geography and Environmental Geoscience
 

Citation

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Collin, A., Hench, J. L., Pastol, Y., Planes, S., Thiault, L., Schmitt, R. J., … Troyer, M. (2018). High resolution topobathymetry using a Pleiades-1 triplet: Moorea Island in 3D. Remote Sensing of Environment, 208, 109–119. https://doi.org/10.1016/j.rse.2018.02.015
Collin, A., J. L. Hench, Y. Pastol, S. Planes, L. Thiault, R. J. Schmitt, S. J. Holbrook, N. Davies, and M. Troyer. “High resolution topobathymetry using a Pleiades-1 triplet: Moorea Island in 3D.” Remote Sensing of Environment 208 (April 1, 2018): 109–19. https://doi.org/10.1016/j.rse.2018.02.015.
Collin A, Hench JL, Pastol Y, Planes S, Thiault L, Schmitt RJ, et al. High resolution topobathymetry using a Pleiades-1 triplet: Moorea Island in 3D. Remote Sensing of Environment. 2018 Apr 1;208:109–19.
Collin, A., et al. “High resolution topobathymetry using a Pleiades-1 triplet: Moorea Island in 3D.” Remote Sensing of Environment, vol. 208, Apr. 2018, pp. 109–19. Scopus, doi:10.1016/j.rse.2018.02.015.
Collin A, Hench JL, Pastol Y, Planes S, Thiault L, Schmitt RJ, Holbrook SJ, Davies N, Troyer M. High resolution topobathymetry using a Pleiades-1 triplet: Moorea Island in 3D. Remote Sensing of Environment. 2018 Apr 1;208:109–119.
Journal cover image

Published In

Remote Sensing of Environment

DOI

ISSN

0034-4257

Publication Date

April 1, 2018

Volume

208

Start / End Page

109 / 119

Related Subject Headings

  • Geological & Geomatics Engineering
  • 37 Earth sciences
  • 0909 Geomatic Engineering
  • 0406 Physical Geography and Environmental Geoscience