Implementing a qualitative calculus to analyse moving point objects

► Generic conceptual model to analyse MPOs through a Qualitative Trajectory Calculus (QTC). ► Implementation prototype for a QTC-based information system (QTCAnalyst). ► Case study 1: using QTCAnalyst to analyse a traffic situation in QTC-Basic. ► Case study 2: using QTCAnalyst to analyse a squash game in QTC- Double-Cross.