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| Titel |
Supporting lander and rover operation: a novel super-resolution restoration technique |
| VerfasserIn |
Yu Tao, Jan-Peter Muller |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250107230
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| Publikation (Nr.) |
 EGU/EGU2015-6925.pdf |
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| Zusammenfassung |
| Higher resolution imaging data is always desirable to critical rover engineering operations,
such as landing site selection, path planning, and optical localisation. For current Mars
missions, 25cm HiRISE images have been widely used by the MER & MSL engineering
team for rover path planning and location registration/adjustment. However, 25cm is not high
enough resolution to be able to view individual rocks (≈¤2m in size) or visualise the types of
sedimentary features that rover onboard cameras might observe. Nevertheless, due to various
physical constraints (e.g. telescope size and mass) from the imaging instruments
themselves, one needs to be able to tradeoff spatial resolution and bandwidth. This means
that future imaging systems are likely to be limited to resolve features larger than
25cm.
We have developed a novel super-resolution algorithm/pipeline to be able to restore
higher resolution image from the non-redundant sub-pixel information contained in
multiple lower resolution raw images [Tao & Muller 2015]. We will demonstrate with
experiments performed using 5-10 overlapped 25cm HiRISE images for MER-A,
MER-B & MSL to resolve 5-10cm super resolution images that can be directly
compared to rover imagery at a range of 5 metres from the rover cameras but in our
case can be used to visualise features many kilometres away from the actual rover
traverse.
We will demonstrate how these super-resolution images together with image
understanding software can be used to quantify rock size-frequency distributions as well as
measure sedimentary rock layers for several critical sites for comparison with rover
orthorectified image mosaic to demonstrate optimality of using our super-resolution resolved
image to better support future lander and rover operation in future. We present the potential of
super-resolution for virtual exploration to the ≈400 HiRISE areas which have been viewed 5
or more times and the potential application of this technique to all of the ESA ExoMars
Trace Gas orbiter CaSSiS stereo, multi-angle and colour camera images from 2017
onwards.
Acknowledgements: The research leading to these results has received funding from the
European Community’s Seventh Framework Programme (FP7/2007-2013) under grant
agreement No.312377 PRoViDE. |
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