Orthophoto is a processed aerial photo from which distortions caused by terrain relief, camera tilt relative to the ground at the moment of exposure and camera central projection are removed. Digital orthophoto has a certain pixel size or resolution, which shows the smallest indivisible exposed area on the ground (Ground Sampling Distance, GSD).

Orthophotos have a nationwide coverage and correspond to the scale of 1:5000-1:10 000 (pixel size 20-40 cm). Orthophotos for densely populated areas are produced with the pixel size of 10-16 cm.

Example of orthophoto (GSD 20 cm)
Example of orthophoto in urban areas (GSD 10 cm)

CIR images are used mostly in remote sensing applications in forestry, agriculture, environmental monitoring, etc. Near Infrared, Red and Green channels are used.

False color composite (CIR, Color Infrared)
False color for forestry use (CIR-NGR)
Data properties
Format GeoTIFF, ECW
Data structure raster
Scale 1:10 000, settlement areas 1:4000
Update frequency Annually about half of Estonia's territory is covered with new photos, larger settlements every year.
Licence Land Board Open Data License
Please refer to the Land Board and date when using the data. For example: "Orthophoto, Land Board 2020"

Last update: 23.09.2021 14:51
Back to beginning