期刊名称:ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN:2194-9042
电子版ISSN:2194-9050
出版年度:2000
卷号:XXXIII Part B2
页码:603-609
出版社:Copernicus Publications
摘要:The technologies of Digital Photogrammetric Workstations (DPW) and Geographic Information Systems (GIS) have traditionally developed separately. The paper describes the integration of a DPW with an Object-Oriented GIS, and details the resulting synergies and efficiency gains. A flowline of seven steps is reduced to three. An implementation of 2.5D topology (3D geometries, with topological relationships in the projected z=0 plane) is described with examples of the utility of this approach. The principles of such an integration are detailed with an analysis of the roles of the DPW and GIS. The mode of operation for feature extraction and edit is described, together with the benefits of real-time topology and verification in collecting and maintaining 3D linear and area networks. The model includes the representation of such man-made features as road overpasses and tunnels. The Object-Orientated GIS provides a strong framework for knowledge-based validation methods. The paper concludes with some directions for future developments