【Introduction】

   As the most important academic event of ISPRS Com.II during the period 2000-2004, this mid-term symposium chose The Integrated Systems for Spatial Data Production, Custodian and Decision Support as its theme. It has attracted about 120 papers from more than 20 countries.

【Main Contents】

A Displacement Method Based on Field Analysis
Spatial Search Engine-Enabling the Intelligent Geographic Information Retrieval
Object extraction and revision by Image Analysis Using Existing geospatial Data: State of the art and Steps towards Operational Systems
Agri-Enviro Information System for the North China Plain
Multi-sensor Systems for Land-based and Airborne Mapping: Technology of the Future?
Digital terrain model reconstruction in urban areas from airborne laser scanning data: The method and the example of the Town of Pavia
Lidar Derived Elevation Data to support flood Plain modeling
System design for automated quality control of geodata by integration of gis and imagery
Field-Used Digital Photogrammetry Workstation
Semi-Automatic Extraction of Houses with Multi Right Angles from Aerial Images
Modeling and analysis tools for interferometric SAR observations
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Asymmetrical Representation of Topological Relationships
Outlook on the Development of Digital Photogrammetry-From Digital Photogrammetric Workstation to Digital Photogrammetric System
Wavelet-based the Character Recognition in Map
The System of Collaborative Urban Planning and Design Based on 3D-GIS and VR
Urban 3D GIS from LIDAR AND Digital Orthoimages
Event-driven Incremental Updating: An Updating Approach of Spatio-Temporal Database
Research on Assessing the Progress towards Sustainable Development Supported by the Geo-Spatial Information Technology
Fast Rectification for Space-Borne SAR Digital Images with No Ground Control Point
Effects of the Interval of Tiepoints on the Reliabillity of Sar Image Co-registration
A Study on Integrating Geology data, Surveying data, Minerals data and Establishing Visualization Application Systems
Incorporating Digital Watermarks in Colour\Digital Images