Pléiades project: Assessment of georeferencing accuracy, image quality, pansharpening performence and DSM/DTM quality

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Topan, H.; Cam, A.; Özendi, M.; Oruç, M.; Jacobsen, K.; Taşkanat, T.: Pléiades project: Assessment of georeferencing accuracy, image quality, pansharpening performence and DSM/DTM quality. In: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 41 (2016), S. 503-510. DOI: http://dx.doi.org/10.5194/isprsarchives-XLI-B1-503-2016

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/701

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Sum total of downloads: 256




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Abstract: 
Pléiades 1A and 1B are twin optical satellites of Optical and Radar Federated Earth Observation (ORFEO) program jointly running by France and Italy. They are the first satellites of Europe with sub-meter resolution. Airbus DS (formerly Astrium Geo) runs a MyGIC (formerly Pléiades Users Group) program to validate Pléiades images worldwide for various application purposes. The authors conduct three projects, one is within this program, the second is supported by BEU Scientific Research Project Program, and the third is supported by TÜBİTAK. Assessment of georeferencing accuracy, image quality, pansharpening performance and Digital Surface Model/Digital Terrain Model (DSM/DTM) quality subjects are investigated in these projects. For these purposes, triplet panchromatic (50 cm Ground Sampling Distance (GSD)) and VNIR (2 m GSD) Pléiades 1A images were investigated over Zonguldak test site (Turkey) which is urbanised, mountainous and covered by dense forest. The georeferencing accuracy was estimated with a standard deviation in X and Y (SX, SY) in the range of 0.45m by bias corrected Rational Polynomial Coefficient (RPC) orientation, using ~170 Ground Control Points (GCPs). 3D standard deviation of ±0.44m in X, ±0.51m in Y, and ±1.82m in Z directions have been reached in spite of the very narrow angle of convergence by bias corrected RPC orientation. The image quality was also investigated with respect to effective resolution, Signal to Noise Ratio (SNR) and blur coefficient. The effective resolution was estimated with factor slightly below 1.0, meaning that the image quality corresponds to the nominal resolution of 50cm. The blur coefficients were achieved between 0.39-0.46 for triplet panchromatic images, indicating a satisfying image quality. SNR is in the range of other comparable space borne images which may be caused by de-noising of Pléiades images. The pansharpened images were generated by various methods, and are validated by most common statistical metrics and also visual interpretation. The generated DSM and DTM were achieved with ±1.6m standard deviation in Z (SZ) in relation to a reference DTM.
License of this version: CC BY 3.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2016
Appears in Collections:Fakultät für Bauingenieurwesen und Geodäsie

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 69 26.95%
2 image of flag of Turkey Turkey 29 11.33%
3 image of flag of United States United States 21 8.20%
4 image of flag of France France 21 8.20%
5 image of flag of China China 21 8.20%
6 image of flag of Austria Austria 21 8.20%
7 image of flag of Russian Federation Russian Federation 8 3.12%
8 image of flag of Italy Italy 7 2.73%
9 image of flag of United Kingdom United Kingdom 6 2.34%
10 image of flag of India India 5 1.95%
    other countries 48 18.75%

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