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For Lebanese stock market index, see Beirut Stock Exchange. For the surname Blom, see Blom (surname). For the cryptographic scheme, see Blom's scheme.
Blom ASA
Industry Cartography
Founded 1954
Headquarters Oslo, Norway
Area served
Key people
Dirk Blaauw (CEO)
Revenue Decrease NOK 335 million (2012)
Decrease NOK 1,7 million (2012)
Decrease NOK -66,6 million (2012)
Number of employees
600 (2013)


Blom is a leading European service provider within acquisition, processing and modelling of geographical information. Blom maintains unique European databases with collections of map, images and models. With particular focus on online services, Blom provides data and solutions to customers in government, enterprise and consumer markets and enables partners to create applications using Blom’s databases, location based services and navigation solution. Blom has more than 600 employees and subsidiaries in 10 countries. The company headquarters is in Oslo, Norway. Blom is listed on the Oslo Stock Exchange (ticker BLO) (OSE: BLO). For more information, visit


Blom ASA was founded in 1954 by hydrographer Ole H. Blom. By 1988 the company was listed on Oslo Stock Exchange.


The primary business areas are aerial photography, laser scanning (LiDAR), mapping and modelling, databases and database applications, GIS services and online map services (BlomURBEX).

Blom focuses on the following main market segments:

• Defence & Security • Resources & Environment • Government & Public Administration • Utilities & Infrastructure • Web & Mobile Solutions

Blom uses large format cameras mounted in twin-engined fixed-winged aircraft or rotor wing helicopters assisted by Global Positioning System (GPS) with Inertial Measurement Units (IMU) to perform oblique and vertical aerial photography. In addition, the company capture map data using survey cameras, laser scanners (LiDAR) and Hyperspectral scanners.

Blom maintains a large database of oblique and vertical aerial photography, laser data, map models such as 3D city models, digital surface models and digital terrain models, and digital orthophoto images .