基于DOM和DEM绘制地形图的应用研讨

Study on the application of topographic map drawing based on DOM and DEM

本文介绍使用无人机航飞成果高清DOM和数字高程模型DEM的特性和优势,通过DOM矢量化获取地物成图,DEM萃取高程点生成高程图,合并生产初始地形图,结合现场调绘和施测,完善地形图。本文阐述了绘制地形图的流程,细化了流程步骤及注意的技术要点,总结了技术优势,使得此项技术运用更加成熟,便于今后在复杂地域推广实施。

In this paper,the use of unmanned aerial vehicle(UAV)flight results high-definition image features and advantages of DOM and DEM elevation digital model,through the DOM for vector quantization feature mapping,DEM extraction elevation point generating elevation graph,merged production initial topographic map,combined the annotation and measured,and perfect the topographic map.This paper expounds the drawing process of topographic map,the main technical points of the refining process steps and attention,and summarizes the technology advantage,make use of the technology more mature,facilitate in complex areas to promote implementation of the new technology in the future.