Graph segment analysis and post processing of line graphics in engineering drawings Vectorization 线状图形矢量化中的行段分析与后处理
Achieved the superposition between remote sensing image and original digital line graphics ( DLG ), give the thorough research of remote sensing image application in updating the geomorphologic map in town, also researched in city three dimensions visual application. 实现了影像与城市原有的数字线划图(DLG)的叠加,对遥感影像在城市地形图更新、城市三维可视化方面的应用做了深入的探讨。
This paper set forth the changeability of quick-return motion and quick-return characteristics in the different extreme positions on double crank mechanism, and expressed them in the form of the line graphics ψ 3 ~θ. 阐述了双曲柄机构具有急回运动程度可变的特点,分析了双曲柄机构在不同极限位置的急回运动特性,并以线图(LG)ψ3~θ的形式表示。
The conclusion is that the geometric accuracy of the digital line graphics by total digitalizing photogrammetric system can reach by the traditional analogous methods or analytical methods. 最终得出了利用全数字化摄影测量系统测制(1∶10000)数字线划地图其几何精度可以达到传统的模拟测图和解析测图的几何精度的结论。
Former theoretical line loss calculation and analysis systems are comparatively drop behind without graphics input section. It requests us to number the nodes according to line graphics, and input the data for analysis manually. 以往电网线损理论计算和分析系统相对落后,无图形录入部分,不直观,需要根据绘制线路图自行编制节点编号,进行数据录入分析。