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Proceedings Paper

Coastal habitat mapping in the Aegean Sea using high resolution orthophoto maps
Author(s): Konstantinos Topouzelis; Apostolos Papakonstantinou; Michaela Doukari; Panagiotis Stamatis; Despina Makri; Stelios Katsanevakis
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Paper Abstract

The significance of coastal habitat mapping lies in the need to prevent from anthropogenic interventions and other factors. Until 2015, Landsat-8 (30m) imagery were used as medium spatial resolution satellite imagery. So far, Sentinel-2 satellite imagery is very useful for more detailed regional scale mapping. However, the use of high resolution orthophoto maps, which are determined from UAV data, is expected to improve the mapping accuracy. This is due to small spatial resolution of the orthophoto maps (30 cm). This paper outlines the integration of UAS for data acquisition and Structure from Motion (SfM) pipeline for the visualization of selected coastal areas in the Aegean Sea. Additionally, the produced orthophoto maps analyzed through an object-based image analysis (OBIA) and nearest-neighbor classification for mapping the coastal habitats. Classification classes included the main general habitat types, i.e. seagrass, soft bottom, and hard bottom The developed methodology applied at the Koumbara beach (Ios Island - Greece). Results showed that UAS’s data revealed the sub-bottom complexity in large shallow areas since they provide such information in the spatial resolution that permits the mapping of seagrass meadows with extreme detail. The produced habitat vectors are ideal as reference data for studies with satellite data of lower spatial resolution.

Paper Details

Date Published: 6 September 2017
PDF: 6 pages
Proc. SPIE 10444, Fifth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2017), 1044417 (6 September 2017); doi: 10.1117/12.2279140
Show Author Affiliations
Konstantinos Topouzelis, Univ. of the Aegean (Greece)
Apostolos Papakonstantinou, Univ. of the Aegean (Greece)
Cyprus Univ. of Technology (Cyprus)
Michaela Doukari, Univ. of the Aegean (Greece)
Panagiotis Stamatis, Univ. of the Aegean (Greece)
Despina Makri, Univ. of the Aegean (Greece)
Stelios Katsanevakis, Univ. of the Aegean (Greece)

Published in SPIE Proceedings Vol. 10444:
Fifth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2017)
Kyriacos Themistocleous; Silas Michaelides; Giorgos Papadavid; Vincent Ambrosia; Gunter Schreier; Diofantos G. Hadjimitsis, Editor(s)

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