Exploitation of satellite optical and SAR data for public work studies

Charalabos Ioannidis; Sofia Soile; Athanassios Stamos; Dimitra Vassilaki; Evangelos Maltezos; Styliani Verykokou

doi:10.1117/12.2193483

19 June 2015 Exploitation of satellite optical and SAR data for public work studies

Charalabos Ioannidis, Sofia Soile, Athanassios Stamos, Dimitra Vassilaki, Evangelos Maltezos, Styliani Verykokou

Proceedings Volume 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015); 95350I (2015) https://doi.org/10.1117/12.2193483
Event: Third International Conference on Remote Sensing and Geoinformation of the Environment, 2015, Paphos, Cyprus

Abstract

This paper studies the use of high resolution satellite optical and SAR images for 1:5,000 mapping production, which is essential for public work and environmental impact assessment studies. The images were used for the extraction of DEMs and their “fit for purpose” use was investigated, through the examination of parameters like accuracy, reliability and performance of morphological features. Orthoimages from satellite optical images using the produced DEMs with or without breaklines were produced. An application was developed on Antiparos island, a Greek island with irregular terrain. The data includes: (a) a triplet of Pleiades (1A, tri-stereo) satellite images, with a resolution of 0.5m, (b) a TanDEM-X Intermediate DEM, a preliminary version of the forthcoming TanDEM-X global DEM, and (c) an accurate DEM produced from the Greek National Cadastre & Mapping Agency S.A. was used as the reference DEM. The georeferencing of the optical images was computed using GCPs which were measured with GNSS. DEMs were extracted using all the possible combinations of the images triplet using automated image matching without any filtering or editing and were evaluated using the reference DEM. The combination of images which yielded the best DEM was then used to manually editing 3D points and collecting breaklines in order to produce a better DEM, which was also evaluated using various statistical measures and geo-morphological features. Orthoimages were created and evaluated using DEMs from optical and SAR data. A discussion about the use of the computed mapping products for the various stages of the public work studies is included.

Citation Download Citation

Charalabos Ioannidis, Sofia Soile, Athanassios Stamos, Dimitra Vassilaki, Evangelos Maltezos, and Styliani Verykokou "Exploitation of satellite optical and SAR data for public work studies", Proc. SPIE 9535, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015), 95350I (19 June 2015); https://doi.org/10.1117/12.2193483

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KEYWORDS

Satellites

Synthetic aperture radar

Earth observing sensors

Satellite imaging

Image resolution

Clouds

Optical resolution

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