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Proceedings Paper

Analysis of phenological changes of high vegetation in amplitude images of SAR time series
Author(s): Ramona Ihrig; Silvia Kuny; Antje Thiele; Stefan Hinz
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Paper Abstract

In the task of damage detection based on SAR imagery, the handling of the textural similarity between heaps of debris surrounding damaged buildings and high vegetation poses to be a challenge. However, in previous work we showed that features exist that are sensitive to the small but distinct textural difference. Since, those analyses were based on a single data set containing only one phenological state of the vegetation, we have to analyze the stability of the textural feature used for separation. In this paper, based on one time series the variation of the SAR signature of high vegetation, especially forest areas, is studied due to phenological changes. The data are high resolution Spotlight amplitude images of TerraSAR-X, because similar data are used for damage detection. The considered textural features are statistical features of the first order as well as Haralick features. The evaluation is performed on non-overlapping patches in the forest areas and comprises the search of seasonal runs of the texture features. Additionally, the occurrence of deciduous and coniferous forests is analyzed to emphasize potential phenological differences between both species.

Paper Details

Date Published: 5 October 2017
PDF: 12 pages
Proc. SPIE 10428, Earth Resources and Environmental Remote Sensing/GIS Applications VIII, 104280W (5 October 2017); doi: 10.1117/12.2278417
Show Author Affiliations
Ramona Ihrig, Karlsruher Institut für Technologie (Germany)
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Silvia Kuny, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Karlsruher Institut für Technologie (Germany)
Antje Thiele, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Karlsruher Institut für Technologie (Germany)
Stefan Hinz, Karlsruher Institut für Technologie (Germany)


Published in SPIE Proceedings Vol. 10428:
Earth Resources and Environmental Remote Sensing/GIS Applications VIII
Ulrich Michel; Karsten Schulz, Editor(s)

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