基于无人机遥感影像及其点云特征的建筑物震害提取
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摘要
以北川老县城地震遗址为研究对象,通过使用点云CSF滤波算法得到研究区建筑物高度特征nDSM数据,并通过点云格网化处理以及坡度值计算得到建筑物坡度特征,再结合研究区DOM数据进行建筑物震害提取,实验结果表明该方法能够较好地提升建筑物震害的提取精度。
Taking earthquake sites in the old county town of Beichuan as research area,the nDSM data of the height information of the building. in the study area are obtained by using the point cloud CSF filtering algorithm. The slope characteristic of the building is obtained through the points cloud grid processing and the slope value calculation. Combine the DOM and nDSM and slope image of the research area,we extract the seismic damage of building through the object-oriented method. The results show that the method of combine DOM and height and slope information can improve the extraction the accuracy of building damage than only use DOM.
Taking earthquake sites in the old county town of Beichuan as research area,the nDSM data of the height information of the building. in the study area are obtained by using the point cloud CSF filtering algorithm. The slope characteristic of the building is obtained through the points cloud grid processing and the slope value calculation. Combine the DOM and nDSM and slope image of the research area,we extract the seismic damage of building through the object-oriented method. The results show that the method of combine DOM and height and slope information can improve the extraction the accuracy of building damage than only use DOM.
引文
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Khoshelham K,Nardinocchi C,Frontoni E,et al.2010.Performance evaluation of automated approaches to building detection in multi-source aerial data[J].ISPRS Journal of Photogrammetry and Remote Sensing,65(1):123-133.
Petrie G.2009.Systematic Oblique Aerial Photography Using Multiple Digital Frame Cameras[J].Photogrammetric Engineering and Remote Sensing,75(2):102-107.
Zhang W,Qi J,Wan P,et al.2016.An Easy-to-Use Airborne LiDAR Data Filtering Method Based on Cloth Simulation[J].Remote Sensing,8(6):501.
陈晋,习聪望,陈文凯,等.2018.基于无人机、高分卫星遥感影像的甘肃省陇南市建筑物空间化研究[J].地震研究,41(2):192-200.
冯帅.2014.影像匹配点云与机载激光点云的比较[J].地理空间信息,12(6):82-83.
黄敏儿,杜志强,朱庆,等.2014.利用像素高度图的三维建筑物屋顶和立面提取方法[J].武汉大学学报(信息科学版),39(10):1221-1224.
黄树松.2016.震后机载LiDAR点云建筑物震害提取因子研究[D].北京:中国地震局地震预测研究所.
柳稼航,杨建峰,魏成阶,等.2004.震害信息遥感获取技术历史、现状和趋势[J].自然灾害学报,13(6):46-52.
帅向华,刘钦,甄盟,等.2018.倾斜摄影技术在云南鲁甸地震现场的应用研究[J].震灾防御技术,13(1):158-167.
宿渊源.2015.多源遥感数据建筑物震害信息联合分析[D].北京:中国地震局地壳应力研究所.
王金霞,窦爱霞,王晓青,等.2017.地震后机载LiDAR点云的地物区分方法研究[J].震灾防御技术,12(3):677-689.
王伟,黄雯雯,镇姣.2011.Pictometry倾斜摄影技术及其在3维城市建模中的应用[J].测绘与空间地理信息,34(3):181-183.
王晓青,窦爱霞,王龙,等.2015.2013年四川芦山7.0级地震烈度遥感评估[J].地球物理学报,58(1):163-171.
许建华,张雪华,王晓青,等.2017.无人机倾斜摄影技术在地震烈度评估中的应用——以九寨沟7.0级地震为例[J].中国地震,33(4):655-622.
张雪华,王晓青,王金霞,等.2017.基于SfM方法生成的密集点云数据的典型建筑物分类研究[J].地震,37(3):127-137.
Gerke M,Kerle N.2011.Automatic structural seismic damage assessment with airborne oblique pictometry imagery[J].Photogrammetric Engineering & Remote Sensing,77(9):885-898.
James M R,Robson S.2012.Straightforward reconstruction of 3D surfaces and topography with a camera:Accuracy and geoscience application[J].Journal of Geophysical Research:Earth Surface,117(F3).doi:10.1029/2011JF002289.
Khoshelham K,Nardinocchi C,Frontoni E,et al.2010.Performance evaluation of automated approaches to building detection in multi-source aerial data[J].ISPRS Journal of Photogrammetry and Remote Sensing,65(1):123-133.
Petrie G.2009.Systematic Oblique Aerial Photography Using Multiple Digital Frame Cameras[J].Photogrammetric Engineering and Remote Sensing,75(2):102-107.
Zhang W,Qi J,Wan P,et al.2016.An Easy-to-Use Airborne LiDAR Data Filtering Method Based on Cloth Simulation[J].Remote Sensing,8(6):501.