Bus lane infraction detection method and system

摘要

This disclosure provides methods and systems for form a trajectory of a moving vehicle captured with an image capturing device. According to one exemplary embodiment, a method forms a trajectory of a moving vehicle and determines if the vehicle is moving in one of a permitted manner and an unpermitted manner relative to the appropriate motor vehicle lane restriction laws and/or regulations.

主权项

1. A computer implemented method of estimating a trajectory of a moving vehicle captured with an image capturing device and determining if the moving vehicle is moving in one of a permitted manner and an unpermitted manner associated with movement of restricted vehicles, the image capturing device oriented to include a field of view spanning a vehicle detection target region, the method comprising:
a) processing a first set of compression type motion vectors associated with a plurality of frames captured with the image capturing device, the first set of motion vectors including a cluster of motion vectors representative of the moving vehicle detected within a virtual target area associated with the vehicle detection target region at a first location; b) classifying the moving vehicle detected as one of a plurality of vehicle categories based on one or more geometric attributes associated with the cluster of motion vectors, the plurality of categories associated with restricted vehicle types and non-restricted vehicle types, and the geometric attributes including one or more of area, length, height, width and eccentricity; c) if the moving vehicle detected is categorized as a restricted vehicle type, processing a second set of compression type motion vectors associated with the plurality of frames captured with the image capturing device, the second set of motion vectors including a cluster of motion vectors representative of the moving vehicle detected within the virtual target area associated with the vehicle detection target region at a second location different from the first location; d) generating a trajectory of the moving vehicle detected within the virtual target area associated with the vehicle detection target region using the first set of motion vectors associated with the first location and the second set of motion vectors associated with the second location; and e) processing the generated trajectory of the moving vehicle detected to determine if the moving vehicle is moving in one of the permitted manner and the unpermitted manner.