一种利用HJ\|1B 红外相机数据自动识别林火的方法
摘要
Forest fire is a kind of worldwide natural calamity.It is extensively distributed with high occur-rence frequency and destroys forest resources thus disturbing normal living order of people and leading to environmental deterioration.The Infrared Sensor carried by HJ-1B(HJ-1BIRS),its'spatial resolution is 150mand saturation temperature is more than 500K.It's the only camera,which have been carried by Chi-nese satellite,to detect highest surface temperature in China at present.In this study,basing on analyzing the information of related bands of HJ-1BIRS by using sampling method,an adapted windows'thread con-dition forest fire identification methodology has been developed according to the character of HJ-1BIRS.The automatic forest fire identification program has been developed by using HJ-1BIRS Image and integra-tion of background GIS data in IDL language.At the same time,by operating the program nearly one year,the fire identification method and identification results of precision have been validated by selecting the typ-ical forest fires which have been taken place in northeast or south forest region of China.The validation re-sults show that the truth precision is more than 90%,the missing identification precision low than 10%,but error is 0.So,the fire identification methodology can be satisfied the need for fire identification opera-tion in China.