iCOR is a software to atmospherically correct Earth observation data. It allows you to correct spaceborne, airborne and drone images for atmospheric effects for land and for inland, coastal and transitional waters. iCOR also corrects adjacency effects which improves the image quality at the water-land boundary. 

We offer a few basic versions as free plugins for SNAP toolbox and we also support advanced iCOR versions for other sensors upon request.

  • Landsat-8 OLI 
  • Sentinel-2 MSI
  • Sentinel-3 OLCI
    (free version available for SNAP toolbox)
  • Drone data
    (upon request)


The software has been validated in the framework of several EU projects (De Keukelaere, 2018), iCOR4S3 (ESA) and ACIX by VITO and partners. iCOR runs as a standalone application, but can also be integrated in an operational environment or a toolbox.



  • S. Sterckx, E. Knaeps & K. Ruddick (2011) Detection and correction of adjacency effects in hyperspectral airborne data of coastal and inland waters: the use of the near infrared similarity spectrum, International Journal of Remote Sensing, 32:21, 6479-6505, DOI: 10.1080/01431161.2010.512930
  • S. Sterckx, E. Knaeps,  S. Kratzer & K. Ruddick (2015) - SIMilarity Environment Correction (SIMEC) applied to MERIS data over inland and coastal waters, Remote Sensing of Environment, Vol 157: 96-110
  • L. De Keukelaere, S. Sterckx, S. Adriaensen, E. Knaeps, I. Reusen, C. Giardino, M. Bresciani, P. Hunter, C. Neil, D. Van der Zande & D. Vaiciute (2018) - Atmospheric correction of Landsat-8/OLI and Sentinel-2/MSI data using iCOR algorithm: validation for coastal and inland waters, European Journal of Remote Sensing, 51:1, 525-542, DOI: 10.1080/22797254.2018.1457937