Image based detecting system and method for traffic parameters and computer program product thereof

摘要

An image-based detecting system for traffic parameters first sets a range of a vehicle lane for monitoring control, and sets an entry detection window and an exit detection window in the vehicle lane. When the entry detection window detects an event of a vehicle passing by using the image information captured at the entry detection window, a plurality of feature points are detected in the entry detection window, and will be tracked hereafter. Then, the feature points belonging to the same vehicle are grouped to obtain at least a location tracking result of single vehicle. When the tracked single vehicle moves to the exit detection window, according to the location tracking result and the time correlation through estimating the information captured at the entry detection window and the exit detection window, at least a traffic parameter is estimated.

主权项

1. An image-based detecting system for traffic parameters, comprising a processor which further includes:
a vehicle lane region of interest (ROI) setting module, setting a monitored range on a vehicle lane, and setting an entry detection window and an exit detection window on said vehicle lane; a vehicle passing event detection module, detecting whether a vehicle passing event has occurred by using image information captured at said entry detection window; a feature point detection and tracking module, detecting a plurality of feature points detection detected within said entry detection window when a vehicle passing event is being detected, and for tracking said plurality of detected feature points by time; a feature point grouping module, grouping a plurality of feature points to obtain a location tracking result of a single vehicle; and a traffic parameter estimation module, when a tracked single vehicle moves to said exit detection window, said traffic parameter estimation module estimating at least a traffic parameter according to said location tracking result of said single vehicle and by estimating temporal correlation of information captured in said entry and said exit detection windows; wherein said feature point grouping module uses a hierarchical feature point grouping architecture to group feature points belonging to a same vehicle to obtain said location tracking result of said single vehicle, and said hierarchical feature point grouping architecture includes, from bottom to top, a point level, a group level and an object level, said feature point grouping module merges similar feature points and rejects erroneous noise feature points between the point level and the group level, and merges groups with motion consistency and spatial-temporal consistency into a moving object between the group level and the object level.