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teaching:projh402 [2020/10/12 19:12] ezimanyi [Map-matching as a Service] |
teaching:projh402 [2020/10/22 14:18] ezimanyi [Visualization of Moving Objects on the Web] |
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| However, these platforms are used for static spatial data and are unable to cope with moving objects. The goal of the project is to extend one of these platforms with spatio-temporal data types in order to be able to display animated maps. | However, these platforms are used for static spatial data and are unable to cope with moving objects. The goal of the project is to extend one of these platforms with spatio-temporal data types in order to be able to display animated maps. | ||
| + | {{:teaching:trips2.gif?direct|}} | ||
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| + | Animated visualization of car trajectories | ||
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| + | **Status**: taken | ||
| ===== Implementing TSBS on MobilityDB ===== | ===== Implementing TSBS on MobilityDB ===== | ||
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| GPS location tracks typically contain errors, as the GPS points will normally be some meters away from the true position. If we know that the movement happened on a street network, e.g., a bus or a car, then we can correct this back by putting the points on the street. Luckily there are Algorithms for this, called Map-Matching. There are also a handful of open source systems that do map matching. It remains however difficult to end users to use them, because they involve non-trivial installation and configuration effort. Preparing the base map, which will be used in the matching is also an issue to users. | GPS location tracks typically contain errors, as the GPS points will normally be some meters away from the true position. If we know that the movement happened on a street network, e.g., a bus or a car, then we can correct this back by putting the points on the street. Luckily there are Algorithms for this, called Map-Matching. There are also a handful of open source systems that do map matching. It remains however difficult to end users to use them, because they involve non-trivial installation and configuration effort. Preparing the base map, which will be used in the matching is also an issue to users. | ||
| - | {{:teaching:original.png?direct&400|}} | + | {{:teaching:original.png?direct&400|}} |
| Original trajectory | Original trajectory | ||
| - | {{:teaching:mapmatched.png?400|}} | + | {{:teaching:mapmatched.png?direct&400|}} |
| Map-matched trajectory | Map-matched trajectory | ||