面向地震应急的遥感影像快速定位研究
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摘要
为实现地震应急期间非常规手段获取的遥感影像的快速定位,提出了建立序列影像航线方程实现影像快速定位的思路和方法,开发了影像快速自动定位程序。以玉树地震应急期间获取的多景无地理参考信息的高分辨率航空遥感影像为实验对象,在人工交互方式对初始影像进行粗定位的基础上,利用本方法实现了系列影像的快速定位。通过随机抽样点验证定位精度,二次函数相对于一次函数拟合精度较好,表明在损失一定精度的同时可大大提高影像快速定位的效率,满足地震应急的需求。
In order to rapidly locate remote sensing images acquired with unconventionality ways during post-earthquake emergency stage,we developed a method of rapid remote sensing image location by construction of the flight path equation and the location of image sequences.An auto-positioning program is developed accordingly.A set of high resolution remote sensing images is used for experiment.The images were obtained during emergency stage after 2010 Yushu earthquake and lack of geographical reference.Based on rough registration of two or three images manually,this method is used for quick location of images.Random sampling to verify the location precision shows that the fitting precision of quadratic function method is better than linear function method.The result implicates that an obvious improvement has been obtained for rapid images location by losing some spatial precision and it is expected to meet the requirement of earthquake emergency.
In order to rapidly locate remote sensing images acquired with unconventionality ways during post-earthquake emergency stage,we developed a method of rapid remote sensing image location by construction of the flight path equation and the location of image sequences.An auto-positioning program is developed accordingly.A set of high resolution remote sensing images is used for experiment.The images were obtained during emergency stage after 2010 Yushu earthquake and lack of geographical reference.Based on rough registration of two or three images manually,this method is used for quick location of images.Random sampling to verify the location precision shows that the fitting precision of quadratic function method is better than linear function method.The result implicates that an obvious improvement has been obtained for rapid images location by losing some spatial precision and it is expected to meet the requirement of earthquake emergency.
引文
[1]王晓青(主编).汶川地震建筑物震害遥感解译图集[M].北京:地震出版社,2010.
[2]窦爱霞,王晓青,丁香,等.遥感震害快速定量评估方法及其在玉树地震中的应用[J].灾害学,2012,(3):75-80.
[3]龚辉.基于四元数的高分辨率卫星遥感影像定位理论与方法研究[D].解放军信息工程大学,2011.
[4]Kratky V.Rigorous Photogrammetric processing of SPOT images at CCM Canada[J].ISPRS Journalof Photogrammetry and Remotesensing,1989,44(2):53-71.
[5]袁修孝.航空摄影测量影像定向的若干探讨[J].地球科学进展,2007,(8):828-834.
[6]郭华东,张兵,雷莉萍,等.玉树地震高倒塌率建筑物及诱因:遥感认识[J].中国科学:地球科学,2010,(5):538-540.
[2]窦爱霞,王晓青,丁香,等.遥感震害快速定量评估方法及其在玉树地震中的应用[J].灾害学,2012,(3):75-80.
[3]龚辉.基于四元数的高分辨率卫星遥感影像定位理论与方法研究[D].解放军信息工程大学,2011.
[4]Kratky V.Rigorous Photogrammetric processing of SPOT images at CCM Canada[J].ISPRS Journalof Photogrammetry and Remotesensing,1989,44(2):53-71.
[5]袁修孝.航空摄影测量影像定向的若干探讨[J].地球科学进展,2007,(8):828-834.
[6]郭华东,张兵,雷莉萍,等.玉树地震高倒塌率建筑物及诱因:遥感认识[J].中国科学:地球科学,2010,(5):538-540.
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