DOI: 10.1016/j.jag.2012.04.013
Scopus记录号: 2-s2.0-84883055755
论文题名: Sub-pixel land-cover mapping with improved fraction images upon multiple-point simulation
作者: Ge Y
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2013
卷: 22, 期: 1 起始页码: 115
结束页码: 126
语种: 英语
英文关键词: Multiple-point simulation
; Soft classification
; Sub-pixel mapping
; Uncertainty
Scopus关键词: accuracy assessment
; classification
; computer simulation
; land cover
; Landsat thematic mapper
; mapping method
; pixel
; remote sensing
; spatial resolution
; uncertainty analysis
; China
; Jiangxi
; Qianyanzhou
英文摘要: Outputs of soft classification inherently contain uncertainty. As an input for the sub-pixel mapping (SPM) method, the uncertainty is propagated to SPM result especially the boundary region between classes. Therefore, reducing the uncertainty within the outputs of soft classification is worth exploring. This paper firstly utilizes multiple-point simulation (MPS) through training images for characterizing the spatial structural properties of a surface object/class. Consequently, MPS results are used to increase the accuracy of the fraction image of the surface object/class. The improved fraction image then inputs to the SPM method for producing the land cover map with finer spatial resolution. In order to validate the proposed method, a remotely sensed image from Landsat TM 30 m over the Qianyanzhou red earth hill region in China is used. This experimental study not only compares the results from SPM with improved fraction images with MPS and results from SPM with original fraction images, but also investigates the performances of different soft classifiers. It has been demonstrated that this proposed method is an effective way to reduce the uncertainty in outputs of different soft classification, increase the recognition accuracies of boundary regions and thus increase the accuracies of SPM simulated images. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79837
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Recommended Citation:
Ge Y. Sub-pixel land-cover mapping with improved fraction images upon multiple-point simulation[J]. International Journal of Applied Earth Observation and Geoinformation,2013-01-01,22(1)