Annual Report of ISPRS WG II/1 (1999)
An International Workshop on Mobile Mapping Technology was held in Bangkok, Thailand, April 21-23, 1999. This workshop was very well attended and has a significant influence on future research and development of real-time mapping technologies. It brought together 190 participants from 17 countries, who are specialists, engineers, users and those interested in mobile mapping technology, kinematic real-time positioning, sensor integration and calibration, feature extraction and 3-D data acquisition. 42 oral presentations in 12 sessions and 18 posters reported most recent R&D and application achievements of mobile mapping. Among them were 2 oral sessions and 2 poster sessions organized by ARIDA and JARS.
The recent trend in the WG topic areas can be summarized by the following:
1) Great efforts have been made in high-accurate real-time navigation data using radio-link based local DGPS correction techniques for a broader range of applications. It will greatly improve the real-time positional accuracy of sensor orientation. Supported by this development and along with the progress in GPS/INS integration, real-time accurate sensor orientation will soon be a reality in some parts of the world.
2) Sensor integration continues to be a challenging but demanding topic in both research and industrial communities. 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.
3) Intelligent processing of real-time mapping data remains a research topic. The application of invariance theory for sensor orientation and georeferencing in cases of weak navigation data has been attracted attention. Object recognition and feature extraction will benefit from the availability of high quality orientation parameters and image sequential information. Algorithms for automatic data processing such as model-based object recognition, multiple image-based matching, Hopfield and Bayesian networks have found applications in the mobile mapping data processing.
Recent relevant publications
Li, R and S. Murai (Ed.) 1999. Proceedings of the International Workshop on Mobile Mapping Technology. Bangkok, Thailand, April 21-23, 1999.
Direct Versus Indirect Methods of Sensor Orientation. Proceedings of Workshop organized by ISPRS WG II/1, Barcelona, November 25-26, 1999.
Li, R., W. Wang and H.-Z. Tseng 1999. Detection and Location of Object from Mobile Image Sequences by Hopfield Neural Networks. Photogrammetric Engineering and Remote Sensing, Vol.65, No.10, pp.1199-1205.
Grejner-Brzezinska, D.A. and C.K. Toth 1999. AIMSTM: An Alternative Tool for Coastal Mapping. Marine Geodesy, Vol.22, No.2, pp.129-137.
Accomplishments of the WG in 1999