Camera-free topographic map acquisition and drawing method and device

• Main Authors: LIU HONGLI, ZHAO SHAONING, WANG XUEBING, ZHANG YONGJUN, HOU JIYING, DENG HAISONG, ZHI CHANGCHENG, LI TANHUA, PENG LELE, HUANG SENSEN
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention provides a topographic map collecting and drawing method and device without a camera. The method comprises the steps of obtaining point cloud data of a target operation area based on a cross route; generating a point cloud three-dimensional model according to the point cloud intensity of the point cloud data; generating a digital elevation model (DEM) according to the point cloud data; generating a DEM three-dimensional model according to the illumination direction and the illumination angle of the DEM; and drawing a topographic map according to the point cloud data, the point cloud three-dimensional model and the DEM three-dimensional model. The problems that the drawing efficiency is low, and the accuracy and precision of topographic map drawing are affected by the skill level of operators in the prior art are solved. 本公开提供了一种无需相机的地形图采集绘制方法及装置，该方法包括：基于十字交叉航线获取目标作业区域的点云数据；根据所述点云数据的点云强度生成点云三维模型；根据所述点云数据生成数字高程模型DEM；根据所述DEM的光照方向、光照角度生成DEM三维模型；根据所述点云数据、所述点云三维模型和所述DEM三维模型绘制地形图，解决了相关技术中存在的绘制效率低、绘制地形图