Consultants for Surveying Engineering
Welcome to AVT,
Your partner for surveying


Use, types, specializing

There are many applications of orthophotos, ranging from the documentation of landscape changes to base data for infrastructure projects. Two types of orthophotos are distinguished:

  • DTM-based: sharp edges, displacement of objects elevated from the terrain like buildings or trees (leaning)
  • DSM-based: partly blurred edges, correct display of elevated objects
DTM-based ortho
DSM-based ortho

AVT is specialized in several disciplines:

  • High-resolution orthos (2.5 to 5 cm) for communities, water- or energy suppliers, often complemented by terrestrial surveys
  • Winter orthos for ski resorts 
  • Thermal orthos for analyzing building energy efficiency (current research project)
5 cm ortho
Thermal ortho
Winter-summer transition at St. Johann / Tyrol