Digital aerial photographs

An aerial photograph is a central projection, without correction for the shape of the terrain or camera rotations. This means that the scale in the image varies. The product name in Swedish is Digitala flygbilder. The product name in Swedish is Flygbilder Nedladdning.

Brief information

The product, which also includes orientation data to enable positioning of the image in a coordinate system, can be used for mapping, production of orthophotos, interpretation of vegetation and more.

Digital aerial photographs from different years of photography, with a resolution of 0,48 meters/pixel, are available throughout the whole of Sweden. Aerial photographs with a resolution of 0,24 meters/pixel are available in the southern part of the country, along the northern coast and over the larger urban areas (in total approx. 44% of the country), in accordance with national image provision programme.

From 2019, the resolution of the aerial images is increased to 0,37 m/pixel and 0,15 m/pixel respectively, instead of 0,48 m/pixel and 0,24 m/pixel.

The images are photographed with an overlap allowing stereo processing, for instance 3D measurement.

More examples of the use of digital aerial photographs are:

  • Updating of Lantmäteriet’s cartographic data bases using photogrammetric methods (measurement in 3D models)
  • Production of orthophotos
  • Mapping for production of plans, maps, land use information, contours/terrain models, 3D models, etc.
  • Interpretation of vegetation and analyses for e.g. forestry purposes, by using the infrared colour images.

Maintenance and update frequency

Aerial photography is carried out according to an annual plan based on a long-term aerial photography plan. Both the annual plan and long-term plan can be found under the heading Plans and outcomes. Here you can read more about Lantmäteriet’s national image provision programme:

Read more about The national image provision programme.

Order product

Order from Lantmäteriet

To order aerial photographs or orthophotos please use the Order form or contact our Geodata support. 

Weekdays 09.30-12.00

Telephone: 026-63 36 00
E-mail: geodatasupport@lm.se

Order from resellers

Do you need help with customization and processing of our products and services? Contact any of our resellers.

Copyright and publication

In some cases you need permit to distribute geographic information. Read more on the page Copyright and publication of Lantmäteriet's geographical information.

Plans and outcomes

Here you will find information about planned and completed aerial photography. The plans are subject to change based on weather and other conditions.

Kamerakalibrering
Here you can find a list of all calibration protocols for the cameras and lenses used in Lantmäteriet’s aerial photography operations.

Search Service

In GeoLex (opens in new window), you will find information regarding metadata for aerial photographs and orthophotos.

Documentation

For a more detailed description of the content, see the product descriptions in Swedish or English:

Delivery information and metadata

A digital aerial photograph with a resolution of 0,37 m/pixel covers an area corresponding to 9,8 x 6,3 km on the ground, while an aerial photograph with a resolution of 0,15 meters/pixel covers an area of ​​4,0 x 2,6 kilometers.

Digital aerial photographs can be ordered with optional cut-out and a resolution equal to or lower than the original.

The aerial photographs are adapted to the coordinate system applied during the production, but deliveries can be made in any coordinate system.

Delivery format

Digital aerial photographs are as standard delivered in JPEG or uncompressed TIFF format. Aerial photographs in 4 channels can however only be delivered in uncompressed TIFF format.

PatB (.ori-file) and project file for Match-AT (.prj-file). You can instead of these files also obtain refined orientation data for the ESPA-system or for the Summit-project, or ready-to-use model files for these.

Files in the delivery

The file name, i.e. the image identity, normally contains information about year of photography, photo area, flight altitude, flight line number and image number.

Examples of image identity:

  • 07i48ce50_13~2007-06-07_101807_39
  • 09b48zx08_35~2009-04-25_104838_66

The orientation file (ori-file) contains image number, camera position and camera orientation (rotation matrix).

The project file for Match-AT (.prj-file) also contains, apart from orientation, camera settings and inner orientation for the images.

Metadata

All aerial photographs can upon request be supplied together with information regarding the camera, flying altitude, negative scale, exposure point, flight line number and image number.

All exposure points, including metadata for each photograph, are available in shape format for each year from 2006 onwards. You can download the files from this page under the heading Image exposure points.

What does the information mean?

MetBILD_ID Examples and explanations
BILD_ID Image ID; a unique identity for the aerial photograph, e.g. 15a448mi37_12 ~ 2015-08- 15_085754_5000
PROJEKT Designation of the photography project, e.g. 15a448
OMR_BET Area designation, e.g. 15A448
STR Flight line number (a serial number), e.g. 12
BILD_NR Image number within the flight line (a serial number), e.g. 5000
X X coordinate for the exposure position, e.g. 6600891
Y Y coordinate for the exposure position, e.g. 1343532
HOJD Flight altitude above ground, in meters, e.g. 7400
N N-coordinate of the exposure position in the coordinate system SWEREF 99 TM,
e.g. 6597260
E E-coordinate of the exposure position in the coordinate system SWEREF 99 TM,
e.g. 389163
OTIS Image overlap (in %) between adjacent images in the same flight line, e.g. 60
OTMS Side overlap (in %) between adjacent flight lines, e.g. 26
SKUGGL Relative shadow length in the image, e.g. 1.3
KAMERA Camera type, e.g. Vexcel UCE 37
KAMERAK Camera constant (distance between the lens center and the projection center of the
image, e.g. 79.8
BILDTYP Image type; specifies the spectral type of the aerial photograph, e.g. rgb
LEVERANT

Supplier of the image, i.e. Lantmäteriet

DATUM Actual date of photography, e.g. 20150815
TID Actual time (Swedish summertime) of photography, e.g. 10:57:54
PIXELST Resolution in micro meters (width and length of a pixel in the image), e.g. 5.2
PIXEL_MARK Resolution in meters on the ground (the width and length on the ground that a pixel in the image corresponds to), e.g. 0,48
UTBREDNING The approximate coverage area on the ground for the aerial photograph, in km x km, e.g. 9,6 x 6,3
FILNAMN The file name for the image, e.g. 15a448mi37_12 ~ 2015-08-15_085754_5000
FLYGR Flight direction in degrees, e.g. 359
FLYGARCY Flight year, e.g. 2015

Demo data

Please note that the demo files are very large and the download may take a long time.

Demo data can be freely downloaded for testing and evaluation. For commercial use or re-distribution to third party, a user fee must be paid, and a User Agreement must be signed with Lantmäteriet.

Information about fees and terms and conditions for use of digital aerial photographs can be obtained from any of Lantmäteriet's resellers of geodata or from Lantmäteriets geodatasupport.

All our demo datasets are available on our FTP-server (new window). Links to individual datasets are available below.


Demo data from the digital aerial camera UCEM3 (UltraCam Eagle Mark 3)

Demo files

Image type

Demofiles (4 GB) Aerial photographs in 4 channels, with orientation data in
Match-AT format.
Demofiles (4 GB)

Aerial photographs in 4 channels, with orientation data in ESPA

Demo data from the digital aerial camera UCE (UltraCam Eagle)

Demo files

Image type

Demofiles (zip 2,3 GB) Aerial photographs in RGB (colour), with orientation data in
Match-AT format
Demofiles (zip 2,2 GB) Aerial photographs in IR (infrared) with orientation data in
Match-AT format
Demofiles (zip 2 GB) Aerial photographs in RGB (colour), with orientation data in ESPA
Demofiles (zip 1,7 GB) Aerial photographs in IR (infrared), with orientation data ESPA

Test data

Test data have been produced for product development purposes. The data may be used according to the license terms below.

License terms for test data

The Licensee acquires a non-exclusive, non-transferable right, for test and evaluation, to store and process the test data.

The Licensee also acquires the right to make a limited number of analogue copies/prints containing elements of test data for external distribution, e.g. to be included in a report or presentation.

The Licensee also has the right to publish the results of the evaluation, including parts of the test data, on the Internet, provided that the published products cannot be re-distributed or further processed via the publication.

The right to use the data for test and evaluation does not include the right to make test data available for any other purposes, either within the Licensee’s own organization nor externally.

The Licensee is entitled to use the test data without charge in exchange for Lantmäteriet to be given access to and be able to present results and experiences from the Licensee's tests and evaluations on Lantmäteriet’s website.

We welcome your feedback on the test data via anvandarsynpunkt.geodata@lm.se

Test data from combi sensor

During the late summer of 2021, Lantmäteriet tested a combined laser scanner and flight camera. The purpose was mainly to increase knowledge about the collection of laser data. A combination sensor of the type Leica Terrainmapper-2 was used to collect various test cases. A selection is published here as test data, laser data with four color bands as well as aerial images and orthophotos.  

Lasertest 2021 (opens in a new window)

Test data is also available via FTP (ftp)

Product variant/test files

Via the link below, there are pictures from test flights 2018 with different flight altitudes from parts of Gothenburg.

Gothenburg 2018 (opens in new window)

Contents of this page may be automatically translated, we take no responsibility for the accuracy of the translation. Feel free to contact our customer support centre if you have any questions.

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