Method for tracking and recognizing and automatically capturing illegal behaviors of vehicles in highway large scene

Abstract

The invention provides a method for tracking and recognizing and automatically capturing illegal behaviors of vehicles in a highway large scene. The method comprises the steps of (S1) detecting a vehicle target entering the highway large scene, (S2) tracking and recognizing a passing behavior of the vehicle target, (S3) dynamically controlling a camera to continuously track the vehicle target withtraffic violation, (S4) quickly capturing the vehicle target with the traffic violation, and (S5) carrying out forensic record on the vehicle target with the traffic violation. According to the method provided by the invention, the problem of the identification and process forensics of long-term traffic violations such as the continuous lane change of a passing vehicle and driving in a wrong laneon a freeway is effectively solved based on a single PTZ camera.

Description

technical field [0001] The invention relates to a method for tracking, identifying and automatically capturing illegal behavior of vehicles in a large expressway scene, and belongs to the technical fields of traffic image processing and traffic information. Background technique [0002] The highway motor vehicle traffic violation capture system is more and more widely used in our country. Common traffic violations include speeding, occupying emergency lanes, and driving in violation of the prescribed lanes. Among them, the overspeed capture system usually adopts coil-camera, microwave radar-camera, virtual coil-camera, and interval speed measurement; the occupied emergency lane capture system captures the vehicles entering the calibrated emergency lane range through the camera installed on the roadside; Drive according to the specified lane and the capture system is mainly used to capture the occupancy behavior of large vehicles such as trucks and buses on the overtaking lan...

AI Technical Summary

Problems solved by technology

In recent research results, many technologies use this feature to realize multi-angle or panoramic scene video image analysis of vehicle targets, but there is still a lack of automatic control of the PTZ parameters of the camera to actively track and record moving targets.

For example, the Chinese invention patent 201310359688 proposes an intelligent video analysis system and method based on PTZ camera cruise. By configuring PTZ camera preset positions / cruise points, the surrounding scenes are monitored, and panoramic images are stitched together to detect and analyze moving objects. , but the movement of the PTZ camera is carried out according to the cruising path, and there is no targeted control, focusing and tracking of the detection target or event, and it is difficult to record the complete process of the event; The traffic flow parameter video detection method constructs a strict transformation relationship between the PTZ camera image plane coordinate system and the actual coordinate system, and measures the vehicle size. This method has high requirements for camera installation and calibration, and it is difficult to continuously track specific targets. Behavioral analysis; such as a video detection-based illegal vehicle detection device and method proposed in Chinese invention application 201510670812, which detects moving targets based on edge features, classifiers, and difference methods, and analyzes whether there is line pressure, line crossing, and retrograde and illegal parking violations, and then control the pan-tilt to capture images, but do not control the pan-tilt zoom and adjust the angle to continuously track and record the video of the target movement. Forensics function to identify and judge violations

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