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| Titel |
Image-model coupling: a simple information theoretic perspective for image sequences |
| VerfasserIn |
N. D. Smith, C. N. Mitchell, C. J. Budd |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 16, no. 2 ; Nr. 16, no. 2 (2009-03-20), S.197-210 |
| Datensatznummer |
250013131
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| Publikation (Nr.) |
 copernicus.org/npg-16-197-2009.pdf |
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| Zusammenfassung |
| Images are widely used to visualise
physical processes. Models may be developed which attempt to
replicate those processes and their effects. The technique of
coupling model
output to images, which is here called "image-model coupling", may be used to help understand the underlying
physical processes, and better understand the limitations of the models.
An information theoretic framework is presented for
image-model coupling in the context of communication along a discrete channel.
The physical process may be regarded as a transmitter of
images and the model as part of a receiver which decodes or
recognises those images. Image-model coupling may therefore be interpreted as
image recognition. Of interest are physical processes which
exhibit "memory". The response of such a system
is not only dependent on the current values of driver variables,
but also on the recent history of drivers and/or system description.
Examples of such systems in geophysics include the ionosphere and Earth's climate.
The discrete channel model is used to help
derive expressions for matching images and model output, and help analyse
the coupling. |
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