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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 24, issue 3
Nonlin. Processes Geophys., 24, 367–378, 2017
https://doi.org/10.5194/npg-24-367-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Current perspectives in modelling, monitoring, and predicting...

Nonlin. Processes Geophys., 24, 367–378, 2017
https://doi.org/10.5194/npg-24-367-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 20 Jul 2017

Research article | 20 Jul 2017

Regularization destriping of remote sensing imagery

Ranil Basnayake1,2, Erik Bollt1,2, Nicholas Tufillaro3, Jie Sun1,2, and Michelle Gierach4 Ranil Basnayake et al.
  • 1Department of Mathematics, Clarkson University, Potsdam, NY 13699, USA
  • 2Clarkson Center for Complex Systems Science (CS), Potsdam, NY 13699, USA
  • 3College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
  • 4Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA

Abstract. We illustrate the utility of variational destriping for ocean color images from both multispectral and hyperspectral sensors. In particular, we examine data from a filter spectrometer, the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi National Polar Partnership (NPP) orbiter, and an airborne grating spectrometer, the Jet Population Laboratory's (JPL) hyperspectral Portable Remote Imaging Spectrometer (PRISM) sensor. We solve the destriping problem using a variational regularization method by giving weights spatially to preserve the other features of the image during the destriping process. The target functional penalizes the neighborhood of stripes (strictly, directionally uniform features) while promoting data fidelity, and the functional is minimized by solving the Euler–Lagrange equations with an explicit finite-difference scheme. We show the accuracy of our method from a benchmark data set which represents the sea surface temperature off the coast of Oregon, USA. Technical details, such as how to impose continuity across data gaps using inpainting, are also described.

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