Mediterranean forest species mapping using classification of Hyperion imagery |
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| Authors: | Georgia Galidaki Ioannis Gitas |
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| Institution: | School of Forestry and Natural Environment, Aristotle University of Thessaloniki, Thessaloniki, Greece |
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| Abstract: | Regional operational forest species mapping is an active research topic that aims to provide the systematic and updatable information necessary for understanding and monitoring the rapidly changing forest environment. In this study, we investigated the potential of satellite hyperspectral imagery in regional forest species mapping by employing a pixel-based and an object-based nearest neighbour classifier in two different Mediterranean study areas. The overall thematic accuracy of the produced maps was assessed using reference data collected in the field and ranged between 0.72 and 0.83. No approach was found to be superior for the study areas. The McNemar test showed no statistically significant difference at the 95% confidence level in the classification accuracies achieved by the two approaches. Both pixel- and object-based approaches provide useful maps, suggesting that regional forest species mapping from space has much potential. |
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| Keywords: | Mediterranean ecosystem hyperspectral object-based pixel-based |
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