文章基本信息

标题：Mapping wetland environments in the Brazilian savannah from high resolution Ikonos image data
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作者：Ivan Barbosa
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - Part 7B
页码：62-67
出版社：Copernicus Publications
摘要：Wetlands are complex ecosystems hosting a high diversity of landscape associated with water, soil and vegetation variations. It provides several essential resources for wildlife and human populations and supports a miscellany of aquatic plant species. The Pandeiros Wildlife Sanctuary is a unique wetland ecosystem surrounded by semiarid savannas. It supports large communities of macrophytes and terrestrial plants and stores large quaqntities of organic matter. In this article we propose a methodology for classifying these wetlands using their spectral and textural signature extracted from Ikonos image data. The main plant communities were identified from low altitude photographs acquired with a microlight aircraft. Ground data also complemented these photographic records. Classification trials were made using both spectral and spatial feature (texture) to assess the most appropriate approach. As a result five classes of macrophytes (as dominant specie) and four terrestrial classes were identified with an accuracy of over 80%. Texture data brought a significant improvement to the classification
关键词：Classification; High resolution; IKONOS; Land Cover; Texture; Vegetation; Wetlands