Annual Report of ISPRS WG II/1 (1998)

There were two sessions on real-time mapping technology at the Commission II Symposium at Cambridge UK. An International Workshop on Mobile Mapping Technology will be held in Bangkok in April 1999. Recent trend in this area can be summarized by the following:

1) In addition to GPS, INS and CCD cameras, integration of laser, SAR and hyper-spectral sensors is becoming evidently advantageous in applications where not only real-time but also all-weather and high accuracy is essential. Research in multisensor and multiplatform based sensor integration and data processing will be an important topic in the next few years. Its applications can be found in emergency management, environmental monitoring, and others.

2) Intelligent processing of mobile mapping data remains a research topic. The knowledge of camera orientation and possible object models in the object space can be very helpful for feature extraction as well as for object recognition. Multiple image based matching has found its application in the mobile mapping processing. Bayesian networks have been actively researched and promise great potential for feature extraction.

3) With increased accuracy of INS, efforts are being made so that the accuracy of ground points determined by an airborne mobile mapping system will be approaching to the traditional aerial triangulation results.

Recent relevant publications

Li, R. 1997. Mobile Mapping - An Emerging Technology for Spatial Data Acquisition. Journal of Photogrammetric Engineering and Remote Sensing, Vol.63, No.9, pp.1085-1092.

Tao, T. 1997. Automated Approaches to Object Measurement and Feature Extraction from Georeferenced Mobile Mapping Image Sequences. Dissertation, Department of Geomatics Engineering, The University of Calgary, 211p.

Braess, M. 1997. Strukturbasierte Merkmalszuordnung in kurzen stereoskopischen Videosequenzen. Fakultaet fuer Bauingenieur- und Vermessungswesen der Rheinisch-Westfaelischen Technischen Hochschule Aachen, 117p.

Toth, C.K. 1997. Direct Sensor Platform Orientation: Airborne Integrated Mapping System (AIMS). International Archives of Photogrammetry and Remote Sensing, ISPRS Comm. III, Vol. XXXII, part 3-2W3, pp. 148--155, 1997.

Accomplishments of the WG in 1998

- Two real-time mapping sessions at Commission II Symposium in June 1998, Cambridge, UK

- Contributed to Duane C. Brown International Summer School on Geomatics in June 1998, Columbus, OH.

- A Mobile Mapping Workshop in Bangkok 1999 is being organized with local support from Prof. Shunji Murai.

- Planned sessions at ISPRS Congress in Amsterdam 2000