Journal
REMOTE SENSING LETTERS
Volume 4, Issue 5, Pages 513-521Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/2150704X.2013.764027
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Funding
- Naval Postgraduate School [N00244-11-1-0028]
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In this research, we classify 15 common urban trees in downtown Santa Barbara, California, using crown-level canonical discriminant analysis (CDA) on airborne visible/infrared imaging spectrometer (AVIRIS) imagery. We compare the CDA classification accuracy against results obtained from stepwise discriminant analysis. We also examine the impact of various crown-level aggregation techniques and training sample size on classification results. An overall classification accuracy of 86% was achieved using CDA. Species-specific results were highest for dense crowns with high normalized difference vegetation index values. Bands chosen using forward feature selection spanned AVIRIS full spectral range illustrating a need for retaining a full complement of spectral information. Nevertheless, there is some indication that bands along the green edge, green peak and yellow edge are particularly valuable for discriminating structurally similar urban trees.
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