Home Articles The Spatial-Temporal Linear Reference Method and its Application to Long-Range Infrastructure Management...

The Spatial-Temporal Linear Reference Method and its Application to Long-Range Infrastructure Management Based on 4D-Geomatics System

Kazuaki Iwamura
Senior Researcher
Hitachi, Ltd., Central Research Laboratory,
Japan
Email: [email protected]

Keiro Muro
Researcher
Hitachi
Ltd.
Central Research Laboratory
Email: [email protected]

Manabu Fukushima
Senior Engineer. Hitachi
Ltd.
Information & Control Systems Division
Email: [email protected]

The spatial-temporal linear reference (STLR) method based on 4D-Geomatics is introduced in this paper. 4D-Geomatics can manage 3D spatial and temporal data which is beyond the capacity of planer map system. 4D-Geomatics has the function called STLR which links 3D maps with their time series attributes. STLR is a powerful method for long-range infrastructure facility management. STLR has characteristics as follows.
(1) STLR integrates a lot of types of geographical data on the base maps according to link key data of distance and time. Integrated data can be retrieved, displayed by overlay and analyzed easily.
(2) STLR generates large-scale 3D map objects effectively. Object creation function in 4D-Geomatics generates large-scale 3D map objects by connecting representatives of 3D graphical parts along with base maps. Base maps are 2D or 3D poly-lines. Thus, it is not necessary to store whole of 3D map objects in spatial database. Data size becomes smaller than the case all 3D map data is stored.
(3) STLR preserves consistency between map and attributes. When attribute data is updated, 3D objects are re-generated consequently.
The developed STLR is applied for infrastructure facility management such as roads and railways. Several examples are shown in the paper as well.