01

Project planning

Area analysis, flight route, GCP placement, safety requirements

02

Aerial photography

UAV imagery with 80% longitudinal and 70% lateral overlap

03

RTK/PPK geo-referencing

Precise satellite-based coordinates — 2-5 cm accuracy

04

Photogrammetric processing

Point cloud generation via Pix4D, Metashape or ContextCapture

05

3D model and orthophoto

DSM, DTM, orthomosaic, textured 3D model and contour lines

06

GIS analysis and integration

Export to QGIS, ArcGIS, AutoCAD Civil 3D, BIM-process adaptation

Accuracy and quality

  • Horizontal accuracy: 2-3 cm
  • Vertical accuracy: 3-5 cm
  • GSD (ground sample distance): 1.5-2.5 cm
  • Compliance with international standards

Software used

Pix4Dmapper Agisoft Metashape Bentley ContextCapture DJI Terra QGIS ArcGIS Pro AutoCAD Civil 3D CloudCompare