Trajectory retrieval system, method and software for trajectory data retrieval

A method for retrieval of trajectory data from a plurality of image sequences with moving objects comprising the steps of:

• providing a processor;
• providing querying means (7) in said processor configured to formulate a trajectory-based query;
• providing retrieval means (8) in said processor configured to retrieve trajectory data linked and indexed to a matching subset of a set of common routes matching with the trajectory-based query;
• formulating with said processor a trajectory-based query to retrieve the trajectory data exploiting the set of common routes based on the trajectories of the moving objects, whereby each subset of the set of common routes is generated by a plurality of trajectories and whereby each subset is linked with the trajectory data of generating trajectories of the subset or parts thereof, of trajectories overlapping at least in part with the subset or both,
• wherein the querying means (7) comprises means for formulating an area-of interest query, a line-crossing query or a trajectory-by-sketch query, a trajectory-by-example query, a one-click-trajectory query, or any combination thereof, the formulating including translating the queries in terms of common routes, common nodes (A, B, C, D, E, F, G, H) or both.

A non-transitory computer readable medium containing a computer program comprising program code means for performing a method for retrieval of trajectory data from a plurality of image sequences with moving objects comprising the steps of:

• providing a processor;
• providing querying means in said processor configured to formulate a trajectory-based query;
• providing retrieval means in said processor configured to retrieve trajectory data linked and indexed to a matching subset of a set of common routes matching with the trajectory-based query;
• formulating with said processor a trajectory-based query to retrieve the trajectory data exploiting a set of common routes based on the trajectories of the moving objects, whereby each subset of the set of common routes is generated by a plurality of trajectories and whereby each subset is linked with the trajectory data of generating trajectories of the subset or parts thereof or of trajectories overlapping at least in part with the subset,
• wherein the querying means (7) or the retrieval means (8) comprises translating means for translating trajectory-based queries in terms of common routes, common nodes (A, B, C, D, E, F, G, H) or both, the formulating including translating the queries in terms of common routes, common nodes (A, B, C, D, E, F, G, H) or both, when said program is run on a computer or on the system.