Mobile image positioning – NAVI


Petri Rönnholm




This project was a part of the “Service architecture and metadata (PAM)” project that was a support project for NAVI programme. Personal Navigation (NAVI) programme was launched in May 2000 by the Ministry of Transport and Communications in Finland. NAVI was a research, development and co-operation programme. The aim of the programme was to develop and test infrastructure, devices, software and services within the framework of consumer demand and the possibilities of technology.  The Project was funded by the National Technology Agency (TEKES).



Terms image positioning, exterior orientation of an image and image georeferencing mean that the location and the viewing direction of a camera are solved. An oriented digital image, if properly handled, includes measurable information about the scene. Image positioning is a basis for versatile navigation applications, and oriented images are suitable for both outdoor and indoor applications. Special interest about digital images has become topical because of the development of mobile terminals with digital cameras.

The main objectives of this research were to collect basic requirements for digital image measurements, to solve image orientations with known 3-D ground information, to give examples of personal navigation applications based on oriented images, and to discuss about special requirements for land information services.