Orthophotomosaic 2017-2019

Territory of Slovakia was divided into three parts – west, central and east (each one about 17,000 km²). Aerial photographs of western part were taken in 2017, the central part in 2018 and the eastern part in 2019. Orthophotomosaic data shall be subject to the Terms and conditions of provision and use of Orthtophotomosaic.

Technical report: Orthophotomosaic of Slovak Republic 2017-2019 (Slovak only).

Overview of the division of Orthophotomosaics of the Slovak Republic 1st cycle (2017-2019) in ZIP files for download

Orthophotomosaic 1^st cycle for download
Western part 2017 (RGB)	ZIP (94 GB)
Central part 2018 (RGB)	ZIP (86 GB)
Eastern part 2019 (RGB)	ZIP (93 GB)
Information (parameters, accuracy)
Licence terms

Plán tvorby ortofotomozaiky SR

Overview of airborne imageries, from which Orthophotomosaic of Slovakia 2017-2019 (1^st cycle) was created, together with the exact date of their creation is available in ESRI Shapefile format for download HERE.

Map sheet layout
1 : 5000	Esri GDB	Esri SHP	GeoPackage

Parameters:
GSD (Ground Sampling Distance): 25 cm/pixel
Format: TIFF + TFW
Number of channels: 3 (RGB, 8-bit)
Coordinate reference system: S-JTSK(JTSK) - EPSG code:5514
Number of map sheets (MS) in 1:5000 scale: territory of western Slovakia = 3418 MS, territory of central Slovakia = 3435 MS, territory of eastern Slovakia = 3422 MS

Accuracy:
Root mean square error:
RMSExy = 0,30 m

CE95 (Circular error 95%):

CE95 = 1,7308 x RMSExy = 0,52 m

CE95 value defines the radius of a circle centred at the specified point on the orthophotomosaic within which the real horizontal position of the point is located with 95% probability. It represents the magnitude of an error which will not be exceeded in 95% of cases.

Updated: 03.05.2023