Definition
During the last decade, the proliferation of location-aware devices, such as GPS and smartphones, has given rise to the collection of huge amounts of moving object data in the form of finite sequences of time-stamped geographical locations. These sequences of space-time points encode (a sample of) the trajectories of moving objects. The location of the moving objects is unknown between these measured space-time points. Several models have been proposed to model the uncertainty of a moving object’s location in between sample points. Linear interpolation between the sample points is a first and obvious example.
However, if additional information is available, such as a limit on the possible speed of a moving object, a more informative model is provided by the framework of space-time prisms. This model gives, between two consecutive measured locations, the envelope of possible locations of a moving...
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Kuijpers, B. (2017). Space-Time Prism Model. In: Shekhar, S., Xiong, H., Zhou, X. (eds) Encyclopedia of GIS. Springer, Cham. https://doi.org/10.1007/978-3-319-17885-1_1599
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DOI: https://doi.org/10.1007/978-3-319-17885-1_1599
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