摘要
探地雷达产生地物探脉冲波数据通常是二维图像,不便于直接观察物探结果。为了能更加直观地显示出探测结果,重点展示靶向区域,设计了一种基于物探脉冲波数据的三维空间靶向定位及强度区间增强配色方法,能够将脉冲波数据转换为三维彩色点云数据,赋予不同强度区域不同的颜色,更细致、立体地对兴趣区域进行靶向定位,增强物探数据的可视化表达。以南京市五佰村地块的考古勘探项目为例进行测试,该方法能够在无开挖情况下,清晰地展现地下空间靶向区域的位置、走向、细节尺寸及文物分布等,通过可视化结果与发掘后倾斜摄影测量模型比对,雷达异常信号集中的靶向区域与墓室形态、位置和走向一致,可以为后期挖掘提供指导依据。
The data of geophysical pulse wave generated by Ground-penetrating radar(GPR)is usually two-dimensional image,which is not convenient for direct observation of geophysical survey results.In order to display the detection results more intuitively and focus on the targeting area,a 3D spatial targeting and intensity interval enhancement color matching method based on the physical prospecting pulse wave data is designed,which can convert the pulse wave data into 3D colorful point cloud data,endow different intensity regions with different colors,target the area of interest in a more detailed and three-dimensional way,and enhance the visual representation of geo-radar data.Taking the archaeological exploration project of Wuhan Village plot in Nanjing as an example,the method can clearly show the location,trend,detail size and cultural relics distribution of the target area of the underground space without excavation,and compare the visualization results with the oblique photogrammetry model after excavation,and the target area of the radar anomaly signal concentration is consistent with the morphology,location and direction of the burial chamber,which can effectively provide a guiding basis for later excavation.
作者
钱承军
林海
胡川
丁圳祥
QIAN Chengjun;LIN Hai;HU Chuan;DING Zhenxiang(FAW(Nanjing)Technology Development Co.,Ltd.,Nanjing 211100,China;Nanjing Insititute of Surveying,Mapping&Geotechnical Investigation,Co.,Ltd.,Nanjing 210019,China;School of Smart City,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《城市勘测》
2023年第5期125-129,共5页
Urban Geotechnical Investigation & Surveying
关键词
物探脉冲
强度区间
增强配色
彩色点云
geophysical pulse
intensity interval
enhancement color matching
colorful point cloud
