Arid
DOI10.1117/12.2222751
Geospatial mapping of vegetation in the Antarctic environment using very high resolution WorldView-2 imagery
Jawak, Shridhar D.1; Udhayaraj, A. D.2; Luis, Alvarinho J.1
通讯作者Jawak, Shridhar D.
会议名称Conference on Land Surface and Cryosphere Remote Sensing III
会议日期APR 04-07, 2016
会议地点New Delhi, INDIA
英文摘要

A robust monitoring of the changes in the distribution and density of cryospheric plant species requires accurate and high-resolution baseline maps of vegetation. Mapping such change at the landscape scale is often problematic, particularly in remote areas, such as Antarctica. Vegetation mapping of plant communities at fine spatial scales is increasingly supported by remote sensing technology in cryospheric regions. Less frequent imaging with high spatial resolution satellite sensors enable more detailed analyses of vegetation change frequently. This study is the first to use high-resolution WorldView-2 (WV-2) imagery to classify vegetation communities on Antarctic oases and to provide semi-automated means to map vegetation, as an imperative indicator for environmental change. Multispectral imagery (MSI) and panchromatic imagery (PAN) from very high resolution WV-2 have been used for mapping of vegetation in different forms in Antarctic environment. A range of supervised classification methods have been executed using pansharpened WV-2 data. This study comparatively and statistically evaluates vegetation mapping results using supervised and unsupervised classification methods to extract vegetation in Larsemann Hills and Schirmacher oasis, east Antarctica. We also discuss on the use of supervised pixel-based classifiers and textural measures, in addition to standard multispectral information, to improve the classification of Antarctic vegetation communities. Classification results were validated with independent reference datasets. This work indicates that the overall accuracy of mapping vegetation using WV-2 imagery and semiautomated target extraction methods ranged from 90% to 94%.


英文关键词vegetation WordlView-2 mapping supervised target detection methods
来源出版物LAND SURFACE AND CRYOSPHERE REMOTE SENSING III
ISSN0277-786X
出版年2016
卷号9877
EISBN978-1-5106-0118-5
出版者SPIE-INT SOC OPTICAL ENGINEERING
类型Proceedings Paper
语种英语
国家India
收录类别CPCI-S
WOS记录号WOS:000389680500040
WOS关键词ARCTIC VEGETATION ; COVER ; RAMP ; NDVI
WOS类目Remote Sensing ; Optics
WOS研究方向Remote Sensing ; Optics
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/305647
作者单位1.NCAOR, ESSO, Polar Remote Sensing Dept, Minist Earth Sci, Gama 403804, Goa, India;
2.Univ Madras, Dept Geog, Chennai, Tamil Nadu, India
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Jawak, Shridhar D.,Udhayaraj, A. D.,Luis, Alvarinho J.. Geospatial mapping of vegetation in the Antarctic environment using very high resolution WorldView-2 imagery[C]:SPIE-INT SOC OPTICAL ENGINEERING,2016.
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