Meteorological readings, hydrological parameters and many measures of air, soil and water pollution are often collected for a certain span, regularly in time, and at different survey stations of a monitoring network. Then, these observations can be viewed as realizations of a random function with a spatio-temporal variability. In this context, the arrangement of valid models for spatio-temporal...

This paper presents a technique for the analysis and recognition of body motion using local appearance. A set of spatio-temporal lters are determined by principal component analysis of the contents of spatio-temporal neighborhoods from a set of image sequences. A few principal components deene the basis for an orthogonal space for describing the appearance of motion. The axes of this space repr...

This paper presents a theory for constructing and computing velocity-adapted scale-space lters for spatio-temporal image data. Starting from basic criteria in terms of time-causality, time-recursivity, locality and adaptivity with respect to motion estimates, a family of spatio-temporal recursive lters is proposed and analysed. An important property of the proposed family of smoothing kernels i...

In the paper, we consider the problem of discovering sequential patterns from event-based spatio-temporal data. The problem is defined as follows: for a set of event types F and for a dataset of events instances D (where each instance in D denotes an occurrence of a particular event type in considered spatio-temporal space), discover all sequential patterns defining the following relation betwe...

s of Talks ______________________________________________________________ 7 What are spatioTemporal Databases ___________________________________________________8 CHOROCHRONOS: A Research Network for Spatio-temporal Database Systems (TMR Programme) ______8 Requirements of Traffic Telematics to Spatial and Temporal Databases _______________________________9 Ontology-Based Map Integration _______...

The video content management has attracted increasing attention in recent years. We have proposed a new spatio-temporal knowledge structure, called 3D C-string, to represent the spatio-temporal relations between the objects in a video and to keep track of the motions and size changes of the objects. In this paper, we propose a video algebra to infer the spatio-temporal relations between the obj...

Automatic road map updating has been one of the difficult and important research topics in the community of geomatics. An operational road map updating system should include three key components: the generation of a new version of roads, the automatic road change detection/updating and the spatio-temporal modelling of road data. Special considerations have to be given to the spatio-temporal mod...

In a series of three papers, we study the geometrical and statistical structure of a class of coupled map lattices with natural couplings. These are innnite-dimensional analogues of Axiom A systems. Our main result is the existence of a natural spatio-temporal measure which is the spatio-temporal analogue of the SRB measure. In the rst paper we develop a stable manifold theory for such systems ...

In a series of three papers, we study the geometrical and statistical structure of a class of coupled map lattices with natural couplings. These are innnite-dimensional analogues of Axiom A systems. Our main result is the existence of a natural spatio-temporal measure which is the spatio-temporal analogue of the SRB measure. In this paper we develop a stable manifold theory for such systems as ...

Environmental air pollution studies fail to consider the fact that air pollution is a spatio-temporal problem. The volume and complexity of the data have created the need to explore various machine learning models, however, those models have advantages and disadvantages when applied to regional air pollution analysis, furthermore, most environmental problems are global distribution problems. Th...