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Modeling and retrieval of moving objects. (English) Zbl 1035.68646

Summary: This paper presents a symbolic formalism for modeling and retrieving video data via the moving objects contained in the video images. The model integrates the representations of individual moving objects in a scene with the time-varying relationships between them by incorporating both the notions of object tracks and temporal sequences of PIRs (projection interval relationships). The model is supported by a set of operations which form the basis of a moving object algebra. This algebra allows one to retrieve scenes and information from scenes by specifying both spatial and temporal properties of the objects involved. It also provides operations to create new scenes from existing ones. A prototype implementation is described which allows queries to be specified either via an animation sketch or using the moving object algebra.

MSC:

68U99 Computing methodologies and applications
68M10 Network design and communication in computer systems
68P20 Information storage and retrieval of data
68T45 Machine vision and scene understanding
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