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Mangrove species identification: Comparing WorldView-2 with aerial photographs

Heenkenda, Muditha K., Joyce, Karen E., Maier, Stefan W. and Bartolo, Renee E. (2014). Mangrove species identification: Comparing WorldView-2 with aerial photographs. Remote Sensing,6(7):6064-6088.

Document type: Journal Article
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IRMA ID 84376995xPUB41
Title Mangrove species identification: Comparing WorldView-2 with aerial photographs
Author Heenkenda, Muditha K.
Joyce, Karen E.
Maier, Stefan W.
Bartolo, Renee E.
Journal Name Remote Sensing
Publication Date 2014
Volume Number 6
Issue Number 7
ISSN 2072-4292   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-84904498394
Start Page 6064
End Page 6088
Total Pages 25
Place of Publication Switzerland
Publisher MDPIAG
Abstract Remote sensing plays a critical role in mapping and monitoring mangroves. Aerial photographs and visual image interpretation techniques have historically been known to be the most common approach for mapping mangroves and species discrimination. However, with the availability of increased spectral resolution satellite imagery, and advances in digital image classification algorithms, there is now a potential to digitally classify mangroves to the species level. This study compares the accuracy of mangrove species maps derived from two different layer combinations of WorldView-2 images with those generated using high resolution aerial photographs captured by an UltraCamD camera over Rapid Creek coastal mangrove forest, Darwin, Australia. Mangrove and non-mangrove areas were discriminated using object-based image classification. Mangrove areas were then further classified into species using a support vector machine algorithm with best-fit parameters. Overall classification accuracy for the WorldView-2 data within the visible range was 89%. Kappa statistics provided a strong correlation between the classification and validation data. In contrast to this accuracy, the error matrix for the automated classification of aerial photographs indicated less promising results. In summary, it can be concluded that mangrove species mapping using a support vector machine algorithm is more successful with WorldView-2 data than with aerial photographs.
Keywords Mangrove species mapping
Aerial photographs
Object-based image analysis
Support vector machine
WorldView-2
DOI http://dx.doi.org/10.3390/rs6076064   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Additional Notes This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Description for Link Link to CC Attribution 3.0 License
URL https://creativecommons.org/licenses/by/3.0/au/legalcode


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Created: Fri, 29 Aug 2014, 16:19:59 CST by Anthony Hornby