针对低压架空线路空间环境复杂导致安全距离隐患排查难的问题,提出了一种自定义的直接线性变换方法(Direct Linear Transformation of Self-Calibration,DLTSC),集成到便携式装置来计算导线弧垂及与周围物体的空间距离。以激光测距仪和...针对低压架空线路空间环境复杂导致安全距离隐患排查难的问题,提出了一种自定义的直接线性变换方法(Direct Linear Transformation of Self-Calibration,DLTSC),集成到便携式装置来计算导线弧垂及与周围物体的空间距离。以激光测距仪和陀螺仪进行空间测距,根据成像原理及空间测距仪辅助自标定,获取4个虚拟控制点计算参数;通过空间测距仪实测控制点进行参数修正,完成对DLT的自标定;解决了传统方法需要实际部署控制点的问题,实现了低成本和便携式测量,测量误差范围也满足实际工程需求。展开更多
This paper focuses on the methods and process of spatial aggregation based on semantic and geometric characteristics of spatial objects and relations among the objects with the help of spatial data structure (Formal D...This paper focuses on the methods and process of spatial aggregation based on semantic and geometric characteristics of spatial objects and relations among the objects with the help of spatial data structure (Formal Data Structure),the Local Constrained Delaunay Triangulations and semantic hierarchy.The adjacent relation among connected objects and unconnected objects has been studied through constrained triangle as elementary processing unit in aggregation operation.The hierarchical semantic analytical matrix is given for analyzing the similarity between objects types and between objects.Several different cases of aggregation have been presented in this paper.展开更多
文摘针对低压架空线路空间环境复杂导致安全距离隐患排查难的问题,提出了一种自定义的直接线性变换方法(Direct Linear Transformation of Self-Calibration,DLTSC),集成到便携式装置来计算导线弧垂及与周围物体的空间距离。以激光测距仪和陀螺仪进行空间测距,根据成像原理及空间测距仪辅助自标定,获取4个虚拟控制点计算参数;通过空间测距仪实测控制点进行参数修正,完成对DLT的自标定;解决了传统方法需要实际部署控制点的问题,实现了低成本和便携式测量,测量误差范围也满足实际工程需求。
文摘This paper focuses on the methods and process of spatial aggregation based on semantic and geometric characteristics of spatial objects and relations among the objects with the help of spatial data structure (Formal Data Structure),the Local Constrained Delaunay Triangulations and semantic hierarchy.The adjacent relation among connected objects and unconnected objects has been studied through constrained triangle as elementary processing unit in aggregation operation.The hierarchical semantic analytical matrix is given for analyzing the similarity between objects types and between objects.Several different cases of aggregation have been presented in this paper.
