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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hewson, R.D. Cudahy, T.J. Caccetta, M. Rodger, A. Jones, M. Ong, C. |
| Copyright Year | 2009 |
| Description | Author affiliation: CSIRO Division of Exploration & Mining, Australia (Hewson, R.D.; Cudahy, T.J.; Caccetta, M.; Rodger, A.; Ong, C.) || Geological Survey of Queensland, Australia (Jones, M.) |
| Abstract | Comprehensive mapping of the mineral composition within North Queensland, Australia was recently undertaken using 25, 000 $km^{2}$ of airborne hyperspectral imagery. High spatial resolution, web-accessible, seamless, accurate maps of mineral abundances and physicochemistries, were delivered as part of a Queensland Geological Survey initiative. This required the development of pre-processing and mineral information extraction strategies that could be applied across a large number of individual flight lines within a diverse range of environments. This study demonstrated the successful use of spectral indices to target diagnostic reflectance absorption features associated with mineral abundances, composition and variations associated with crystalline or water bonding states. A multi-level series of masks, in a logical sequence, were applied to reduce possible ambiguities within image products. A new technique was also developed to compensate for variable vegetation cover, enabling the extraction of predominantly geological information (e.g. soil, outcrop, colluvium). |
| File Size | 955636 |
| File Format | |
| ISBN | 9781424433940 |
| DOI | 10.1109/IGARSS.2009.5417473 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-07-12 |
| Publisher Place | South Africa |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Minerals Hyperspectral imaging Geology Data mining Australia Spatial resolution Reflectivity Absorption Crystallization Bonding vegetation compensation Hyperspectral mineral mapping spectral indices |
| Content Type | Text |
| Resource Type | Article |
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