Burned-Area Mapping at the Subpixel Scale With MODIS Images

被引：26
|
作者：
Ling, Feng [1 ]
Du, Yun [1 ]
Zhang, Yihang [1 ]
Li, Xiaodong [1 ]
Xiao, Fei [1 ]
机构：
[1] Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan 430077, Peoples R China
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2015年 / 12卷 / 09期
关键词：
Burned area; mixed pixel; Moderate Resolution Imaging Spectroradiometer (MODIS); subpixel mapping (SPM); SUPERRESOLUTION; ALGORITHM;
D O I：
10.1109/LGRS.2015.2441135
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The Moderate Resolution Imaging Spectroradiometer (MODIS) is an important data set in global burned-area mapping. The MODIS global burned-area product has a coarse spatial resolution at approximately 500 m, which often introduces errors to the mapped burned areas. In this letter, a novel subpixel mapping (SPM) approach was proposed to produce burned-area maps at the fine spatial resolution similar to Landsat imagery, by exploring the spectral and spatial information provided by the second and fifth bands of MODIS. The proposed SPM approach aims to refine the estimate of burned areas, which have been detected by the MODIS global burned-area product. The performance of the proposed SPM approach was assessed with an experiment area containing six burned areas, by comparing with the MODIS burned-area product MCD45. The result shows that the average omission error decreased from 52.26% for MCD45 to 16.74% for SPM, and the average commission error decreased from 21.76% for MCD45 to 12.54% for SPM. The kappa value increased from 0.5583 for MCD45 to 0.8756 for SPM, indicating that the proposed SPM approach is effective in reducing the influence of the coarse spatial resolution of MODIS imagery in mapping a burned area and refining existing global burned-area products.
引用
收藏
页码：1963 / 1967
页数：5
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