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Orthophoto of the Czech Republic

Digital seemingly seamless orthophoto of the Czech Republic in a 8-bit color scale. The pixel of the raster image Ortofota ČR displays 0.125 m of the area in the middle plane of the terrain. The orthophoto of the Czech Republic is constantly improving its positional accuracy characterized by a mean positional error, this error ranged from 0.20 to 0.21 m in the years 2019 - 2020, in the years 2021 - 2022 error ranged from 0.19 to 0.20 m. The evaluation of the accuracy of the orthophoto of the Czech Republic in 2021 has not yet been completed. Orthofoto ČR is distributed in graphic raster formats JPG in dispensing units with a size showing 2.5 x 2 km of terrain in the SM 5 clade.



Data identification

Citation
Source name: Orthophoto of the Czech Republic
Alternative name: Orthophoto of the CR
Reference datum
Reference date: 2023-12-31
Event: revision
Data identifier
Unique identifier: https://cuzk.cz/CZ-00025712-CUZK_ORTOFOTO
Unique identifier: 63410
Contact to the organisation responsible for the data
Person name: Koukalová, Blanka, Ing.
Name of the organisation: Czech Office for Surveying, Mapping and Cadastre
Responsible organisation information
Contact phone
Phone: +420 466 023 428
Fax: +420 284 041 416
Address
Delivery place: Pod sídlištěm 1800/9
City: Praha 8
ZIP code: 182 11
Country: Czech Republic
Online source
Contact hours: Mo-Fr 9:00 AM - 2:00 PM CET
Supplementary information:
Role: custodian
Other information:
Abstract: Digital seemingly seamless orthophoto of the Czech Republic in a 8-bit color scale. The pixel of the raster image Ortofota ČR displays 0.125 m of the area in the middle plane of the terrain. The orthophoto of the Czech Republic is constantly improving its positional accuracy characterized by a mean positional error, this error ranged from 0.20 to 0.21 m in the years 2019 - 2020, in the years 2021 - 2022 error ranged from 0.19 to 0.20 m. The evaluation of the accuracy of the orthophoto of the Czech Republic in 2021 has not yet been completed. Orthofoto ČR is distributed in graphic raster formats JPG in dispensing units with a size showing 2.5 x 2 km of terrain in the SM 5 clade.
Purpose: The Orthophoto of the Czech Republic is exploited in the branch of Ministry of Agriculture as a background for evaluation of fundamental production units in the LPIS system, in the branches of ČÚZK and Ministry of Defence it serves also as a fundamental background for topographic data database update and consequently for update of state map series. The Orthophoto of the Czech Republic is provided to many other users and above all it is intended for state administration bodies and organisations and local governments where is exploited for planning and project preparation, in nature protection, risk management and many others.
Responsible organisation
Person name: Koukalová, Blanka, Ing.
Name of the organisation: Czech Office for Surveying, Mapping and Cadastre
Responsible organisation information
Contact phone
Phone: +420 466 023 428
Fax: +420 284 041 416
Address
Delivery place: Pod sídlištěm 1800/9
City: Praha 8
ZIP code: 182 11
Country: Czech Republic
Online source
Contact hours: Mo-Fr 9:00 AM - 2:00 PM CET
Supplementary information:
Role: custodian
Maintenance info
Maintenance and update frequency: annually
Date of planned source revision: 2024-12-31
Maintenance note: The whole dataset is updated in a two-year cycle. Every year half of the territory of the Czech Republic is updated.
Keywords
Keyword: Orthoimagery
Officially registered thesaurus
Reference datum
Reference date: 2008-06-01
Event: publication
Organisation responsible for the thesaurus:
Name of the organisation: Joint Research Centre
Role: pointOfContact
Keywords
Keyword: map
Keyword: orthophoto
Keyword: orthophotomap
Officially registered thesaurus
Reference datum
Reference date: 2009-01-01
Event: publication
Organisation responsible for the thesaurus:
Name of the organisation: Czech Office for Surveying, Mapping and Cadastre
Role: pointOfContact
Keywords
Keyword: colour orthophotomap
Keyword: orthophoto
Keyword: DASP
Officially registered thesaurus
Reference datumOrganisation responsible for the thesaurus:
Role:
Source restriction
Access and use terms: No charges
Data registered in the National Open Data Catalogue: Yes
Type of spatial representation: grid
Spatial resolution
Distance: 12.5
Source language: cze
Character set: utf8
Thematic category: imageryBaseMapsEarthCover
Data extension
Extent information: 100 % of the Czech Republic territory, i.e. 78,866 km2.
Geographic limitations
Minimal bounding box
Westernmost coordinate: 12.09
Easternmost coordinate: 18.86
Southernmost coordinate: 48.55
Northernmost coordinate: 51.06
Time extent 2022 - 2023
Altitude extension
Minimal value: 115.0
Maximal value: 1602.0

Reference system (horizontal, vertical or temporal)

Coordinate reference system identifier
Reference system citation
Source name: S-JTSK / Krovak East North
Alternative name: S-JTSK / Krovak EN
Reference date
Reference date: 2011-05-09
Event: revision
Other information: EPSG code 5514 S-JTSK / Krovak East North is an equivalent to the existing ESRI code 102067. The projection keeps the mathematic so called "east-north" orientation of coordinate axis where the X axis has positive values eastwards and Y axis northwards. This projection is suitable for exploitation in GIS applications. The projection is related to the Greenwich Prime Meridian (contrary to the EPSG 5221 S-JTSK (Ferro) / Krovak East North where the Prime Meridian is Ferro).
Coordinate reference system identifier
Reference system citation
Source name: ETRS89 / UTM zone 33N (N-E)
Alternative name: ETRS89-TM33N
Reference date
Reference date: 2012-11-26
Event: revision
Other information: The coordinate system ETRS89 / TM33 determined for INSPIRE to display INSPIRE datasets of large scales.
Coordinate reference system identifier
Reference system citation
Source name: ETRS89 / UTM zone 34N (N-E)
Alternative name: ETRS89-TM34N
Reference date
Reference date: 2012-11-26
Event: revision
Other information: INSPIRE užívá pro souřadnicový systém EPSG 3046 název ETRS89-TM34N.

Distribution

Distribution formate
Name: JPEG
Version: JPEG compression, quality: 85
Distributor
Contact information:
Name of the organisation: Land Survey Office
Responsible organisation information
Contact phone
Phone: +420 284 041 605
Fax: +420 284 041 416
Address
Delivery place: Pod sídlištěm 1800/9
City: Praha 8
ZIP code: 182 11
Country: Czech Republic
Online source
Contact hours: Mo-Fr 9:00 AM - 2:00 PM CET
Supplementary information:
Role: distributor

Data quality

Level of scope
Quality description level: series
Report - INSPIRE compliance
Test identifier: CZ-00025712-CUZK_ORTOFOTO-DQ_DomainConsistency-1
Conformity
Specification
Alternative name: DIRECTIVE 2007/2/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 14 March 2007 establishing an Infrastructure for Spatial Information in the European Community (INSPIRE)
Reference date
Reference date: 2007-04-26
Event: publication
Test description: Data set series conformity testing with INSPIRE implementing rules for spatial data sets and services interoperability.
Degree of conformity: false
Report – completness – omission
Measure name: Evaluation of completeness of Czech Republic territory coverage by the data set series
Measure identification: CZ-00025712-CUZK_ORTOFOTO-DQ_CompletenessOmission-1
Measure description: Evaluation of completeness of Czech Republic territory coverage by the Orthophoto data set series.
Date and time of the measure: 2012-11-05T12:00:00
Test result – quantitative
Value domain: %
Value: 100
Report – Positional accuracy – Positional accuracy of grid data
Measure name: Coordinate standard error of the Orthophoto of the Czech Republic
Measure identification: CZ-00025712-CUZK_ORTOFOTO-DQ_GriddedDataPositionalAccuracy
Measure description: Evaluation of total coordinate standard error in flat terrain for the product Orthophoto of the CR.
Date and time of the measure: 2014-01-29T12:00:00
Test result – quantitative
Value domain: m
Value: 0.20
Data origin
Data origin information: Production of orthophotos of the Czech Republic from original aerial survey photos. Since 2012 one half of the state territory is carried out to digitally raster electronic record in the BW-PANCHRO, R, G, B, NIR, they are made of colored images, or can be made in black and white or images in false colors (color infrared).