Mr. Alon Dadon Profile

Alon Dadon

at Ben-Gurion Univ of the Negev

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SPIE Journal Paper | 1 January 2011

Examination of spaceborne imaging spectroscopy data utility for stratigraphic and lithologic mapping

Alon Dadon, Eyal Ben-Dor, Michael Beyth, Arnon Karnieli

JARS, Vol. 5, Issue 1, 053507, (January 2011) https://doi.org/10.1117/12.10.1117/1.3553234

KEYWORDS: Imaging spectroscopy, Signal to noise ratio, Geology, Minerals, Associative arrays, Reflectivity, Spectroscopy, Image classification, Sensors, Aluminum

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Due to the increasing development of image spectroscopy techniques, airborne and spaceborne hyperspectral images have in recent years become readily available for use in geological applications. One of the prominent advantages of imaging spectroscopy is its high spectral resolution, producing detailed spectral information in each pixel. The current study aims at exploring the feasibility of the Earth-Observing-1 Hyperion imaging spectrometer to map the geology arena over the Dana Geology National Park, Jordan. After overcoming the common preprocessing difficulties (e.g., smile effect), a classification scheme of two levels was applied. The first level resulted in a stratigraphic classification product of eleven classes and the second level in a lithologic classification product of six classes. The overall accuracy of the stratigraphic product was 57%, while that of the lithologic product was 79%. Mismatches in classification were mostly related to terrestrial cover of the lower topography formation by rock and sand debris. In addition, low accuracy values can be attributed to Hyperion's high sensitivity, leading to recognition of different mineral compositions as different classes within a rock formation, while the conventional geology-stratigraphic map generalizes these different classes into one formation. The methods practiced in the current research can advance the Hyperion's classification capabilities and therefore can be applied in different geological settings and additional disciplines such as penology, agriculture, ecology, forestry, urban, and other environmental studies.

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