Making a topographic drawing at a scale of 1:500

The study of the terrain included horizontal and elevation marks in the necessary places. Roads should have intersections every 20 meters + points characterizing the terrain (highest and lowest points). In other places (forest, meadow, etc.), elevation marks are required in 15m increments. Horizontal lines should be drawn every 0.5 meters. It was necessary to draw ditches, rivers, ravines or other terrain objects.

The vectorization results were obtained in CAD 2D format and successfully imported into the geographic information system.

• Type of service: LiDAR Data Processing Service
• Company: SIA ĢEODĒZISTS
• Country: Latvia
• Program: AutoCAD Civil 3D .
• Time spent: 2 projects 1 – 100 hours 2 – 400 hours
• The volume of processing: 1 – 18.0 hectares 2 – 167.55 hectares

Vectorization was performed based on:

• Lidar data obtained with the help of the base station and corrected with the help of Inertial explorer. The results were obtained in the LKS92TM EPSG 3059 coordinate system and the Latvian altitude system LAS2000.5 EPSG7700.
• Orthophoto made from an RGB image captured by a 35mm DJI P1 camera. The image was acquired using RTK from Latpos (Latvian cors system). The result is in the LKS92TM EPSG 3059 coordinate system.