Model-driven line-following in scanned cable diagrams

The study is concerned with the automated analysis of scanned cable and associated diagrams for entry in the BT GIS system used by their field service engineers. The salient information in these diagrams is currently being extracted manually at great time and expense. The key information required from these diagrams, is the ducting routes (lines) between their joint boxes (solid black squares) and the end points (circles) on their infrastructure network. These features are also present in the cartographic maps of the area and the cable diagrams, and once detected, enables information held on the different diagrams to be linked together. The physical possibility of providing a new line to a property, for example, requires information to be derived from the cartographic map, and the associated ducting and cable diagrams. The work described is concerned with the identification of the ducting routes in the scanned cable diagrams