The ExoMars Spectral Tool (ExoSpec)an image analysis tool for ExoMars 2020 PanCam imagery

Authors Organisations
  • Elyse J. Allender(Author)
    University of St Andrews
  • Roger B. Stabbins(Author)
    University College London
  • Matt Gunn(Author)
  • Claire R. Cousins(Author)
    University of St Andrews
  • Andrew J. Coates(Author)
    University College London
Type Chapter
Original languageEnglish
Title of host publicationImage and Signal Processing for Remote Sensing XXIV 2018
EditorsF. Bovolo, L. Bruzzone, Jon Atli Benediktsson
ISBN (Print)978-151062161-9, 151062161X
Publication statusPublished - 09 Oct 2018
EventImage and Signal Processing for Remote Sensing - Berlin, Germany
Duration: 10 Sep 201813 Sep 2018

Publication series

NameProceedings of SPIE


ConferenceImage and Signal Processing for Remote Sensing
Period10 Sep 201813 Sep 2018
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The upcoming launch of the European Space Agency (ESA) ExoMars 2020 rover signals a need for an analysis tool to be created which can exploit the multi- and hyperspectral data that will be returned by its Panoramic Camera (PanCam), Infrared Spectrometer for Mars (ISEM), and Close-UP Imager (CLUPI) instruments. Data processed by this analysis tool will be invaluable in (i) characterising the geology local to the ExoMars rover, (ii) relating ground-based observations to orbital Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) data, (iii) detecting evidence of past habitability on Mars, and (iv) identifying drilling locations. PanCam, ISEM, and CLUPI offer spectral analysis capabilities in both spatial (140-1310 microns/pixel at 2 m working distance) and spectral (440-3300 nm) dimensions. We have developed the ExoMars Spectral Tool (ExoSpec) which functions as a GUI-based extension to ENVI + IDL and performs steps from image import and compilation into ENVI.dat format, flat-fielding, radiometric correction, radiance-toreflectance (R∗) corrections using the in-scene Gretag MacBeth ColorCheckerTM, and calculation of spectral parameters. We demonstrate the functionality of ExoSpec at its current stage of development and illustrate its utility with results from field expeditions to Mars analogue terrains in: (i) geothermally altered basalts in Ńamafjall, Iceland, and (ii) layered alluvial plains deposits in Hanksville, USA, using ExoMars PanCam, ISEM, and CLUPI emulator instruments. © 2018 SPIE.


  • ENVI, ESA, European space agency, ExoMars, IDL, PanCam, processing, spectral