| 一种利用HJ-IRS影像的林火火点自动检测算法 |
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| 引用本文： | 詹剑锋, 范冲, 李陶. 一种利用HJ-IRS影像的林火火点自动检测算法[J]. 武汉大学学报 ( 信息科学版), 2012, 37(11): 1321-1324. |
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| 作者姓名： | 詹剑锋 范冲 李陶 |
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| 作者单位： | 1中南大学地球科学与信息物理学院,长沙市麓山南路932号410083;2武汉大学GNSS研究中心,武汉市珞喻路129号4300079 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 对比分析了MODIS传感器和HJ-IRS传感器的差异,在MODIS火点探测V4算法的基础上,通过对云和水体掩膜方法的改进及算法中各阈值的调整,提出了一种适于HJ-IRS的林火火点自动检测算法。以我国黑龙江地区及俄罗斯远东地区为研究对象,通过与采用V4算法生产的相同区域内同时相的MODIS火点产品进行对比分析,发现IRS火点产品在空间分布上与MODIS火点产品基本一致,并没有出现漏检现象;而在低温小火点的探测及火点的几何定位方面,HJ-IRS更具优势。
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| 关 键 词： | HJ-IRS MODIS 改进V4算法 火点检测 |
| 收稿时间： | 2012-09-15 |
A Forest Firespot Automatic Detection Algorithm for HJ-IRS Imagery |
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| ZHAN Jianfeng, FAN Chong, LI Tao. A Forest Firespot Automatic Detection Algorithm for HJ-IRS Imagery[J]. Geomatics and Information Science of Wuhan University, 2012, 37(11): 1321-1324. |
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| Authors: | ZHAN Jianfeng FAN Chong LI Tao |
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| Affiliation: | 1 School of Geosciences and Info-Physics,Central South University, 932 South Lushan Road,Changsha 410083,China;2 Research Center of GNSS,Wuhan University,129 Luoyu Road,Wuhan 430079,China |
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| Abstract: | By comparing and analyzing the sensor difference between MODIS and HJ-IRS,we present a newly improved forest fire hotspot detection method which is adaptive to HJ-IRS through improving a new cloud and water mask method and adjusting the threshold value in the MODIS version 4 contextual algorithm.With Heilongjiang area of China and the Far-east area of Russia as the research object,by comparative analysis with the MODIS hotspot products of same area and same time adopting the V4 Algorithm,we find that IRS hotspot product has the same spatial distribution with MODIS,without leak detection.With respect to low temperature small hotspot and its geometric location,HJ-IRS has a preferable performance. |
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| Keywords: | HJ-IRS MODIS improved V4 algorithm hotspot detection |
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