Orthophography

The orthophoto is obtained by rectification of aerial photographs by eliminating distortions due to relief and perspective. It is very useful in many fields:

  • major Infrastructure
  • urban GIS
  • Hydraulic studies
  • Buildings / facades
  • Natural Hazards and Environment

This produces a 2D document with a uniform scale geometric quality rendering superimposed on a plane or a vector type of card. Georeferenced, it is often integrated into a GIS in a standard format (TIFF / TFW, GeoTIFF, ECW / ERS ..). It describes the environnement as an image.

It is therefore particularly interesting to see the occupation and the nature of a surface.

 

Examples:

pdfAllier area - 7340km²

pdfPuy de dome area - 7970 km²

pdfCity of Clermont-Ferrand

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