利用动态阈值的森林草原火灾火点检测算法  

Forest and Grassland Fire Detection Algorithm Based on Dynamic Threshold

作　　者：刘良明[1] 魏然[1] 周正[1] 

机构地区：[1]武汉大学遥感信息工程学院,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2011年第12期1434-1437,共4页Geomatics and Information Science of Wuhan University

基　　金：国家科技支撑计划资助项目(2008BAK50B08);中央高校基本科研业务费专项资金资助项目

摘　　要：针对传统固定阈值的森林和草原火灾火点遥感检测算法因时空环境变化而导致的火点漏检和误检问题,提出了一种综合季节、地理位置和土地覆盖类型等影响因素的时空动态阈值火点检测算法。实验结果表明,时空动态阈值火点检测算法能有效改善火点检测结果,具有时空自适应性。Focusing on the problem of missing and false fire detection caused by environmental changes when using traditional forest and grassland fixed threshold fire detection algorithm,we propose a space-time dynamic threshold fire detection algorithm considering the spatial and temporal factors,such as season,location and type of land cover.Based on the HJ-1A/B data of the native environment and disaster monitoring and forecasting of small satellite constellation,we selecte the fire case in Heilongjiang Province.Experimental results show that the space-time dynamic threshold fire detection algorithm with the space-time adaptive feature can improve the results of fire detection.

关 键 词：森林和草原火灾 环境减灾卫星 火点检测 动态阈值 

分 类 号：P237.9[天文地球—摄影测量与遥感]