ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume IV-2/W7
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-2/W7, 145–152, 2019
https://doi.org/10.5194/isprs-annals-IV-2-W7-145-2019
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-2/W7, 145–152, 2019
https://doi.org/10.5194/isprs-annals-IV-2-W7-145-2019

  16 Sep 2019

16 Sep 2019

AGGREGATING CLOUD-FREE SENTINEL-2 IMAGES WITH GOOGLE EARTH ENGINE

M. Schmitt1, L. H. Hughes1, C. Qiu1, and X. X. Zhu1,2 M. Schmitt et al.
  • 1Signal Processing in Earth Observation, Technical University of Munich, Munich, Germany
  • 2Remote Sensing Technology Institute, German Aerospace Center (DLR), Oberpfaffenhofen, Wessling, Germany

Keywords: Sentinel-2, Google Earth Engine, Cloud Coverage, Big Data

Abstract. Cloud coverage is one of the biggest concerns in spaceborne optical remote sensing, because it hampers a continuous monitoring of the Earth’s surface. Based on Google Earth Engine, a web- and cloud-based platform for the analysis and visualization of large-scale geospatial data, we present a fully automatic workflow to aggregate cloud-free Sentinel-2 images for user-defined areas of interest and time periods, which can be significantly shorter than the one-year time frames that are commonly used in other multi-temporal image aggregation approaches. We demonstrate the feasibility of our workflow for several cities spread around the globe and affected by different amounts of average cloud cover. The experimental results confirm that our results are better than the results achieved by standard approaches for cloud-free image aggregation.