Road Traffic Violation Industry
Road traffic violation intelligent judgment, capture and traffic information management system
1. Background introduction
With the rapid increase in car ownership, road congestion has become a serious problem in urban development. In order to meet the needs of traffic management, to ensure the safety and smoothness of urban transportation, the gradual improvement of intelligent traffic management becomes necessary. The capture of traffic violations in order to regulate the behavior of drivers is also an important means to strengthen traffic management. The limitations of traditional electronic police systems are gradually reflected. The current high-definition electronic police system used in the market can only illegally capture the vehicles within a few tenths of the camera's camera lens, and some illegal actions such as lane changing, illegal reversal, illegal parking, etc., can occur in the reverse direction. The police system cannot take effective snapshots. At the same time, the acquisition of traffic parameters is an important part of traffic intelligence. The traditional methods of collecting parameters such as coils, radars, and floating vehicles are not only troublesome to install, but also have high maintenance costs and low accuracy, and are point detection or section detection. The detection range has considerable limitations.
In this case, the road traffic violation intelligence research, capture and management system just make up for the market gap. The system is realized through the joint interaction of a gun camera and a ball camera. The bolts and domes are mounted side by side above the road. The system acquires the track position of the vehicle by automatically analyzing the bolt's video, and collects traffic parameters such as speed and flow. When the vehicle violation occurs, the system automatically controls the dome camera to perform steering and zoom to obtain a clear close-up of the specific vehicle in the distance. . The gun-ball linkage traffic parameter acquisition system achieves a wide range of intelligent detection, ensuring the integrity, accuracy and reliability of traffic parameter acquisition. Based on large-scale intelligent detection, gun-ball linkage also provides more valuable traffic parameters. For example, it can provide the rate of change of queued vehicles in the storage area to better describe the flow status.
The entire system uses the capture of bolts, ball capture, intelligent analysis of front-end video, collection of road traffic parameters, detection of traffic incidents, and capture of illegal vehicles. It gives full play to the characteristics of the bolts and domes, and will be used for future urban and high-speed traffic. Management provides a new perspective of management and management.
2. System introduction
2.1 System Structure

Pistol video event detection and illegal capture system package front and back two parts, including the front-end configuration of a fixed video capture gun, a ball capture camera, a traffic parameter acquisition and event detection analyzer. The fixed video capture gun is mainly used to obtain the panoramic video signal. This scene is fixed and will not change. It is the detection of traffic parameters, traffic accidents, and violations of the regular scene. Spherical capture cameras are mainly used to track and capture illegal vehicles. When there is a violation of the vehicle, the ball will automatically rotate to zoom in and take a close-up of illegal vehicles. The traffic parameter acquisition and event detection analyzer mainly receives the above two video signals, and performs real-time analysis of the fixed bolt camera's video signal to collect traffic parameters and events in real-time detection, and performs the real-time detection on the dome camera according to the result of the bolt camera video analysis. Real-time control.
The backend mainly has an event alarm server and an illegal picture receiving server. The event alarm server mainly summarizes the front-end traffic parameters and the alarm signals sent by the event detection analyzers, and provides relevant personnel with notifications to resolve relevant traffic incidents within the first time. The illegal image receiving server is mainly used to store illegal pictures of vehicles returned by the front-end system and perform various management on the pictures.
2.2 Basic Functions
Because our system can identify and track all vehicles in the camera's field of view, we can accurately obtain the group information through the vehicle. The accurate traffic parameters obtained can be input to the signal machine to achieve the purpose of intelligent timing of the entire city signal. The specific traffic parameters and traffic accident alarm functions include:
1 vehicle speed detection function
2 road traffic detection function
3 Queue length detection function
4 head timing detection function
5 lane occupancy detection
6 road congestion detection and alarm function
7 vehicle slow alarm function
8 traffic accident alarm function
9 pedestrians crossing the road to automatically detect and alarm (for closed roads such as high speed)
10 vehicle slow detection alarm function
Because the trajectory of each vehicle is tracked in real time, we can capture any violations based on the status and settings of lane lines, signal lights, etc. The main functions currently used include:
1 vehicle violation pressure line change detection and capture function
2 Vehicle parking violation detection and capture function
3 illegal infringement of bus lane automatic capture function
3 vehicle retrograde detection and capture function
4 abnormal vehicle behavior detection and capture function
6 vehicle speed detection and capture function
7 taxi illegal passenger detection and automatic capture function
8 accident event automatic video and permanent video selection function
9 automatic license plate recognition function
2.3 System Components
2.3.1 Traffic Parameters Acquisition and Event Detection Analyzer
The traffic parameter acquisition and event detection analyzer system is integrated in the computer unit. This unit includes traffic collection and event detection software, image capture processing software, video signal recording software, and background upload software.
Traffic parameter acquisition and event detection analyzers complete the following functions:
To obtain digital video signals, a single analyzer can input 2 channels of video signals, and high-definition video signals can detect 30-80 meters (1 channel camera video signal, 1 camera video signal).
The video stream of the bolt is analyzed, traffic parameters are collected, output to the signal through the IO interface, and transmitted to the traffic parameter analysis server through the public security network.

Analyzing the video stream of the bolts, detecting traffic events, transmitting event alarm signals to the back-end event alarm server through the public security network.
Illegal incidents were detected, the dome camera was controlled to illegally capture illegal vehicles, and uploaded to the back-end illegal picture receiving server through the public security network.
2.3.2 Fixed Cameras:
Mainly for the collection of traffic signals, the camera is fixed, the screen will not change during the use of the device, mainly to provide real-time detection signal to the event detection server. The resolution of the camera is preferably not less than 1.3 million pixels.
2.3.3 Dome Camera
The dome camera mainly completes the illegal snapping. When the screen is zoomed in or zoomed out, the system can automatically capture, adjust to the best focal length, and capture the scene when the best scene is taken. When there is no illegal event at the intersection for a long time, the ball can be controlled. Return to the preset position to monitor the corresponding position in real time. The resolution of the dome camera is not less than 2 million pixels.
2.3.4 Event Alarm Server
The event alarm server is set up in the monitoring center and mainly completes the following tasks:
Collect all front-point event alarm information, and send different alarm signals to related alarm information, and remind relevant traffic management personnel to handle it in time to ensure smooth traffic.
Concentrated alarms, records of traffic incident records, communication with front-end traffic parameters and event detection analyzers, and joint operations of events and traffic control measures.
2.3.5 illegal pictures
The illegal image receiving server is set up in the monitoring center to mainly accomplish the following tasks:
The receipt of illegal data and the classification process provide convenient data collection channels for the data entry personnel of the traffic police detachment.
2.4 Technical Leadingness of the System
The gun linkage system is applied to image processing, binocular vision, artificial intelligence, control theory and other fields of knowledge, and belongs to the leading international product. Although the application of video analysis in the field of intelligent transportation has been a hot topic of research since the last century, it is also recently. Only a few years have really been used in the intelligent transportation field. Because the video analysis technology is easily exposed to external interference such as light in the outdoor environment, it is a huge challenge to maintain the robustness and versatility of the system. Road traffic violations intelligent judgment, capture The traffic information management system makes full use of existing mature technologies. After a long period of research, it has achieved great breakthroughs in video and video analysis and PTZ camera control hardware and software technologies, and solved the problem of identifying and tracking multiple vehicles under severe obstruction conditions. Problems, rapid response of the dome camera and stable focus of the camera and other technical problems. The system will further promote the development of intelligent transportation technology.
2.5 System Features
1) Pure video intelligent detection method, automatic identification detection, overcomes the defects of coils, microwaves and other detection methods. The
2) High definition over sight. The control of the dome camera through the bolts solves the problem that the images of long-distance moving vehicles in the panoramic mode are blurred and the vehicle information cannot be correctly identified. The
3) Traffic parameters collection function is complete. The system can collect and report multiple parameters such as traffic volume, average speed, lane occupancy, headway and queue length. The
4) The traffic event detection function is rich. The system can detect irregular events such as road congestion, slow running, vehicle retrograde, lane changing, illegal parking, bus lane occupancy, or traffic accidents, smoke, abandoned objects, etc., and record, alarm, and capture in real time. The
5) Modular design, according to user needs to provide flow detection, event detection and illegal capture independent or combined system. The
6) The installation and commissioning are simple and the existing electric police pole can be used to complete the installation. The construction period is short. The
3. System application environment
When the system is applied to intersections, the camera is generally installed in reverse on an electronic police camera crossbar about 20 meters away from the parking line, facing the direction of the vehicle. This system is also suitable for use in the middle of the road segment, real-time monitoring of this road section , Real-time statistics on the traffic volume, and the first time to send a signal to induce a large screen, to induce traffic detours, illegal capture of real-time traffic on this section of the road.
3.1 System Construction Specifications
Schematic diagram of lane construction on the driveway (taking three lanes as an example)

Electric Intersection Installation Instructions:
The detection direction of the lane using high-definition camera 1.3 million pixels and above, it is recommended to reverse the installation location in the electric police, face shot, the ball machine installed on the side of the gun.
Cross arm: The camera should be centered above the corresponding road in the position of the cross arm to ensure that each lane in the video is within the best observation range.
The protective cover (camera) is installed as much as possible above the corresponding L-bar in the middle of the three lanes.
The horizontal direction of the camera installation conforms to the effective distance of 30-50 meters. The camera is pressed down as far as possible to ensure a clear inter-vehicle distance between the two vehicles at the bottom of the field of view.
Vertical angle of camera installation is controlled between 35° and 50° depending on the actual detection direction
Camera lens selection: No blur, can drive the lane that needs to be monitored
The minimum distance between the L-bar and the road surface is not less than 7 meters and the maximum height is no more than 12 meters. The higher the height of the camera is, the better it is to avoid the analysis and collection of traffic parameters such as blocking and inter-vehicle distance.
Video transmission from the camera to the junction cabinet is recommended to use six kinds of unshielded twisted pairs with strong anti-interference. Distances greater than 80 meters should be transmitted using optical cables.
The switch should use industrial grade 100M network switches.
Do lightning protection and grounding.
3.2 Road section installation instructions;
The bolts should be installed in the center of the road (using the L-bar) to facilitate the detection of multiple lanes.
And the angle is similar to the intersection. The ball machine is installed on the side of the roadside next to the bolt, and it is required that no obstructions be blocked in the range to be detected, so as not to affect the efficiency and accuracy of the capture.
4. Application examples
4.1 illegal capture and image synthesis

Change in violation of laws:

Reverse retrograde:

Infringement of the bus lane by illegal means:

 illegal parking:

4.2 System Demonstration Video: