文献类型：期刊文献

中文题名：基于GEMI-H算法的森林过火区提取方法

英文题名：Extraction method of forest burned scars based on GEMI-H algorithm

作者：吴茂林[1,2] 覃先林[1] 周汝良[2] 庞勇[1] 李增元[1]

第一作者：吴茂林

机构：[1]中国林业科学研究院资源信息研究所,国家林业局林业遥感与信息技术研究室,北京100091;[2]西南林业大学保护学院森林防火重点实验室,云南昆明650224

年份：2012

卷号：21

期号：6

起止页码：173-178

中文期刊名：自然灾害学报

外文期刊名：Journal of Natural Disasters

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

基金：国防科工局专项项目(EO305/1112/05)

语种：中文

中文关键词：过火区;GEMI-H算法;GEMI算法;HANDS算法

外文关键词：burned scars area ; GEMI-H algorithm ; GEMI algorithm ; HANDS algorithm

分类号：S762.3

摘要：针对GEMI(global environment monitoring index)算法和HANDS(hotspot and NDVI differencingSynergy)算法判识过火区存在的缺陷,提出了一种基于GEMI-H(GEMI and HANDS Synergy)的指数合成算法。通过利用MODIS数据进行了验证与分析,发现新的算法不但可以减小单纯利用HANDS算法时所受到的气候条件等因子的影响,而且还融合了GEMI算法具有抗大气和土壤背景值等干扰的优点,抽取的过火区精度得到了进一步的提高。
Abstract：Aiming at the problems existed in the GEMI （global environment monitoring index） algorithm and the HANDS （hotspot and NDVI differencing synergy） algorithm in the extraction of the burn scars areas, the GEMI-H （GEMI and HANDS Synergy）-based index synergy algorithm was proposed. Analysis and verification using MODIS data showed that, the GEMI-H index synergy algorithm not only could reduce the climatic condition and other fac- tors＇influences induced by simply using the HANDS algorithm, but also could incorporate the advantages of the GE- MI algorithm in that it is resistant to the interference of atmospheric and soil background values, and in some degree improves the accuracy of the extraction of burn scars areas.