KR100444762B1 - Lane Violation Detection, Tracking System and the Method - Google Patents

Abstract

The present invention relates to a lane violation monitoring system and a method for tracking a lane change violating vehicle only on a screen captured by an analog camera, and accurately controlling a lane violation vehicle by photographing a violation vehicle with a digital camera. The main configuration of the present invention is to set an analog camera for photographing the road including the lane change prohibition area, a digital camera photographing to identify the license plate of the vehicle in violation of the lane change prohibition, and a vehicle photographing area of the digital camera. Comparing the before and after screens of the images taken by the analog camera to track the vehicle in violation of the lane change prohibition area, and when the vehicle enters the photographing area of the digital camera, sends a photographing signal to the digital camera, Characterized in that the vehicle license plate recognition system for issuing a lane violation notice by extracting the vehicle number from the image taken by the digital camera.

Description

Lane Violation Detection, Tracking System and the Method

The present invention relates to a road lane violation monitoring and tracking system using an analog camera and a digital camera, and more particularly, to multi-monitor and multi-track only a lane change violation vehicle on a screen captured by an analog camera. The present invention relates to a road lane violation monitoring and tracking system and a method thereof for accurately cracking down a lane violation vehicle by photographing a violating vehicle.

At present, the number of vehicles owned by a household in Korea is increasing. Due to the excessive number of vehicles compared to road facilities, the entire city suffers from traffic jams. Unless special measures are taken, this phenomenon is expected to become even more triangular. As a result, land traffic accidents and casualties are increasing. In 1999, the number of car accident deaths per 10,000 cars is 8.7, which is much higher than the 2.1 Americans, 1.3 Japanese, 1.8 Germans, etc., and the highest level among OECD countries. I have a record.

When reviewing the 2001 land traffic accident data, only 9.4% of traffic accidents occurred, but 65% of traffic accidents resulted from lane violations. These results show that lane violations can be an important factor in traffic accidents. The Ministry of Construction and Transportation recognizes this as a big problem socially, and adopts the unmanned surveillance system to reduce traffic accidents, reduce signal violations, effectively crack down on speeding vehicles, renovate police images through advanced equipment, and crack down effectively through real-time crackdowns. And many positive effects are gaining.

A typical example of lane violations is the frequent interruptions that occur frequently in crowded areas at rush hour. It takes a lot of effort to prevent this, but it is impossible to secure enough personnel, so a system that automatically detects and tracks only the violations is required.

In Patent No. 10-355093 (registered on September 19, 2002), the applicant has installed a low-cost fixed camera and a low-cost vehicle detection camera in the spill lamp to prevent some drivers from intervening immediately before the spill lamp. After taking the license plate of the violating vehicle through the fixed camera, the owner can issue a penalty notice, thereby reducing the initial installation cost and reducing errors in tracking the violating vehicle. A spill ramp control system using image recognition to be a detection camera is presented.

However, such a spill ramp control system is useful for monitoring a single lane such as an interchange, but there is a problem that it is not possible to check for violations such as lane changes in multiple lanes such as four lanes and eight lanes.

Accordingly, an object of the present invention devised to solve the above problems is to set a lane change prohibition zone separately on a screen captured by an analog camera to monitor and track multiple lane violations only, and to photograph a violation vehicle in a digital camera. Therefore, the present invention provides a road lane violation monitoring and tracking system and method for cracking down on a lane violation vehicle accurately.

1 is an exemplary view of a road lane violation monitoring and tracking system according to the present invention.

2 is a block diagram of a vehicle license plate recognition system according to the present invention.

3 is a flowchart illustrating a road lane violation monitoring and tracking method according to a preferred embodiment of the present invention.

<Description of Signs of Major Parts of Drawings>

2: analog camera 3: digital camera

4: Shooting area of analog camera 5: Lane changing prohibition area

6: Shooting area of the digital camera 7: Vehicle

10: License plate recognition system 11: Camera management unit

12: communication unit 13: detection area setting unit

14: video comparison unit 15: vehicle tracking unit

16: photographing instruction unit 17: vehicle number detection unit

18: license plate identification unit 19: bill issuance unit

20: vehicle number storage unit 21: control unit

30: car inquiry network

Road lane violation monitoring and tracking system of the present invention for achieving the above object is to take an analog camera for photographing the road including the lane change prohibited area and to photograph the license plate of the vehicle in violation of the lane change prohibition Set the vehicle shooting area of the digital camera and the digital camera, compare the before and after screen of the image captured by the analog camera to track the vehicle in violation of the lane change prohibition area, and the vehicle is the shooting area of the digital camera. When entering into the digital camera to transmit a photographing signal, and extracting the vehicle number from the image taken by the digital camera characterized in that the vehicle license plate recognition system for issuing lane violation notice.

In addition, the road lane violation monitoring and tracking method is installed so as to shoot the road including the lane change prohibited area to the shooting area of the analog camera, set the position and angle to shoot the license plate into the shooting area of the digital camera, In this case, the step of setting a shooting area for transmitting a shooting signal to the digital camera, the lane change prohibition area continuously photographed by the analog camera is taken and the captured image is transmitted to the license plate recognition system, and the analog camera Selectively selecting only lane change prohibition zones from the images taken at and setting a violation area, and comparing the front and rear screens of the lane change prohibition zones among images received from the analog camera to prevent the vehicle from changing the lanes. Determine if lane changes have been made in the area And when the lane violation vehicle is identified, giving an identification mark to the violating vehicle, generating a photographing signal, and tracking until the vehicle violates the photographing area of the analog camera, and the photographing area of the digital camera. Transmitting a photographing signal to a digital camera when the digital camera arrives, the digital camera photographing a violation vehicle according to the received photographing signal, and transmitting a photographed image, and confirming a vehicle number in the image received from the digital camera. And checking the identified vehicle number on a vehicle inquiry network to confirm the owner of the vehicle; And outputting a lane violation notice for the owner of the vehicle, and storing the output data together with the lane change image of the vehicle.

Hereinafter, a road lane violation monitoring and tracking system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view of a road lane violation monitoring and tracking system according to the present invention, Figure 2 is a block diagram of a vehicle license plate recognition system according to the present invention, Figure 3 is a road lane violation monitoring according to a preferred embodiment of the present invention This is a flowchart showing the tracking method.

The main concept of the present invention is that the administrator can easily specify the lane change prohibition section in the analog camera, and when the image taken from the analog camera is transmitted to the license plate recognition system, before and after the image taken by the lane violation control system Compare and analyze the screen and previous screens to identify and check vehicles that changed lanes in the lane change prohibited area, and when the checked vehicle reaches the shooting area of the digital camera, photograph the license plate with the digital camera and The lane change violation notice is printed to the owner.

As shown in FIG. 1, such a road lane violation monitoring and tracking system includes an analog camera 2 for photographing a road including a lane change prohibited area in a predetermined region, and a digital camera 3 for photographing a vehicle including a license plate on a road. Are respectively installed at predetermined heights.

The analog camera 2 and the digital camera 3 set a lane change prohibition zone 5 in a real-time image of a road taken in the shooting area of the analog camera 2 and display an identification box on a vehicle changed lanes. At the same time with the tracking, it is linked to the license plate recognition system 10 for detecting the vehicle number in the captured image after photographing the license plate of the vehicle marked with the identification box on the digital camera (3).

That is, when the vehicle enters the lane change prohibition area 5 in the real-time image of the road in the analog camera 2, the vehicle is determined to be a violation of the vehicle from the moment it enters, and the identification number or identification box is displayed and tracked at the same time. The number of the vehicle approaching the photographing area of (3) is photographed and transmitted to the license plate recognition system 10.

Looking at the license plate recognition system 10 of the present invention in detail with reference to Figure 2, the license plate recognition system 10 is a camera management unit 11, the communication unit 12, the detection area setting unit 13, the image comparison unit ( 14), vehicle tracking unit 15, photographing instruction unit 16, vehicle number detection unit 17, vehicle number confirmation unit 18, bill issuance unit 19, vehicle number storage unit 20 and the control unit 21 It includes.

The camera management unit 11 sets the photographing area 4 of the analog camera 2 photographing the road including the lane change prohibition area 5 and the photographing area 6 of the digital camera 3 photographing the license plate of the vehicle. In each of the photographing areas 4 and 6, the rotation angle and the like are controlled by a mouse according to a program for controlling the operation of the camera. That is, the camera manager 11 may appropriately adjust the photographing areas 4 and 6 by using pan / tilt, zoom, focus, and the like of the analog camera 2 and the digital camera 3. For example, 10m, 20m, 30m, etc. are set as the photographing area of the analog camera which photographs a lane change prohibited area, and the photographing area 6 and the photographing distance of the digital camera which photograph a violation vehicle are set.

The communication unit 12 transmits various control signals and photographing signals while continuously communicating with the analog camera 2 and the digital camera 3, and receives images captured by the camera.

The detection area setting unit 13 selectively selects only the lane change prohibition area 5 from the image photographed by the analog camera 2 and sets it as a violation area. That is, only the lane change prohibition area 5 excluding the general lane is set as the violation area from the whole image taken by the analog camera 2 so that the comparison can be made in the following image comparison unit.

The image comparison unit 14 compares the front and rear screens from the images transmitted from the analog camera 2 and determines that the vehicle is a lane change violation vehicle when the vehicle enters the lane change prohibition area 5. For example, the confirmation of the lane violation vehicle in the lane change prohibition area 5 is performed by comparing the before and after screen of the received image and the previous screen, and the objects and lanes corresponding to the vehicle in the lane of the lane change prohibition area 5. It can be determined by block matching of the no change zone. Such a violating vehicle detection and tracking method can be determined regardless of the compact car, medium-sized car, large car and vehicle type.

When the vehicle tracking unit 15 determines that the vehicle 7 has entered the lane change prohibition area 5 as a result of the screen comparison of the image comparing unit 14, the vehicle tracking unit 15 gives an identification mark to the violation vehicle and Tracking until the shooting area (4) is out. For example, when there are many lanes such as four lanes or eight lanes, lane violation vehicles are generated at the same time, so the violating vehicles are sequentially identified using numbers, or the violating vehicles are colored. Observe continuously by marking the borders. In this way, by using the identification mark on the vehicle, even if multiple vehicles enter the lane change prohibition area, all can be monitored.

The photographing instruction unit 16 photographs the information of the violating vehicle to the digital camera 3 through serial communication when the violating vehicle tracked by the vehicle tracking unit 15 enters the photographing area 6 of the digital camera 3. Send a signal. The digital camera 3 receives the photographing signal and the information of the violating vehicle to clearly photograph the vehicle.

The vehicle number detector 17 detects a vehicle number from an image of a vehicle photographed by the digital camera 3. For example, the vehicle number can be detected by filtering the background color from the photographed license plate image and deleting it and recognizing only letters and numbers as characters.

The vehicle number confirmation unit 18 is connected to the vehicle inquiry network 30 in which information about the vehicle is registered, and confirms information on the owner of the detected vehicle number.

The bill issuing unit 19 outputs a lane violation notice for the owner of the vehicle number identified in the license plate identification unit 18.

The vehicle number storage unit 20 stores and manages an image of a violating vehicle, a shooting time, a bill issuing number, and the like among the images of the analog camera 2 and the digital camera 3 in the vehicle DB 22.

The control unit 21 controls the flow of data in various cameras 2 and 3, the license plate recognition system 10, the vehicle tracking network 30, and the like.

Hereinafter, a road lane violation monitoring and tracking method will be described in detail with reference to the flowchart of FIG. 3.

First, the road to the lane including the lane change prohibition area (5) to the shooting area (5) of the analog camera (2), and to set the position and angle to shoot the license plate of the digital camera (3), violation When the vehicle enters, the photographing area 6 for transmitting a photographing signal to the digital camera 3 is set (step S301).

In the installed analog camera 2, the photographing area including the lane change prohibition zone 5 is continuously photographed (step S302), and the photographed image is transmitted to the license plate recognition system 10 (step S303).

The detection area setting unit 13 of the license plate recognition system 10 selectively selects only the lane change prohibition area 5 from the image photographed by the analog camera 2 and sets it as a violation area.

The image comparison unit 14 continuously compares the front and rear screens from the images transmitted from the analog camera 2 to determine whether the vehicle 7 has entered the lane change prohibition area 5 (step). S305). For example, as a result of comparing the front and rear screens, if an object corresponding to the size set according to the type of car, such as a small car, a medium-sized vehicle, and a large car is found on a later screen, the object is recognized as a vehicle and confirmed. Can be.

After that, when the lane violation vehicle 7 is confirmed, the vehicle tracking unit 15 gives an identification mark to the corresponding vehicle by the number, color, or box-shaped frame (step S306), and generates a shooting signal (step S307). A trigger signal is generated to track until it leaves the photographing area 4 of the analog camera (step S308).

On the other hand, when the vehicle 7 tracked by the vehicle tracking unit 15 reaches the photographing area 6 of the digital camera, the photographing signal is transmitted to the digital camera 3 through serial communication (step S309).

The digital camera 3 photographs the violating vehicle according to the received photographing signal (step S310), and transmits the photographed image to the license plate recognition system 10 (step S311).

The vehicle number detection unit 17 detects the vehicle number from the image received from the digital camera 3 (step S312), and the vehicle number confirmation unit 18 inquires the identified vehicle number to the vehicle inquiry network 30 to check the vehicle. The owner of the is checked (step S313).

Thereafter, the bill issuing unit 19 outputs a lane violation notice for the owner of the vehicle, stores the captured vehicle image in the vehicle DB 22, and outputs the image of the vehicle license plate recognition system. Are stored in the vehicle DB 22 together (step S314). In this case, it is preferable that the image of the violating vehicle outputs and stores the image before the violation and the image at the time of the violation, the image after the violation, the captured image, and the image of the license plate.

On the other hand, the detailed description of the present invention has been described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

As described above, the road lane violation monitoring and tracking system of the present invention tracks only lane change violation vehicles on a screen captured by an analog camera, and precisely cracks down on a lane violation vehicle by photographing a violation vehicle with a digital camera.

In addition, there is an advantage that does not need a sensor (loop coil, etc.) for checking each violation of the vehicle.

In addition, since one vehicle can easily identify a lane violation using one analog camera and one digital camera, there is an advantage in that the number of blocking rods and cameras or the number of enforcement personnel can be significantly reduced.

In addition, the administration can be easily handled with one-stop from lane violation to issuance of bills.

Claims (4)

An analog camera that photographs roads, including lane change prohibited areas, A digital camera for photographing the license plate of the vehicle in violation of the lane change prohibition; Set the vehicle shooting area of the digital camera, compare the before and after screen of the image taken by the analog camera to track the vehicle in violation of the lane change prohibition area, and when the vehicle enters the shooting area of the digital camera A road lane violation monitoring and tracking system, comprising: a license plate recognition system for transmitting a photographing signal to the digital camera and extracting a vehicle number from an image photographed by the digital camera to issue a lane violation notice. According to claim 1, The license plate recognition system, An analog camera for photographing a road including a lane change prohibited area and a camera manager for controlling a photographing area, a rotation angle, and the like of a digital camera photographing a license plate of a vehicle to be photographed; A communication unit which continuously transmits various operation signals, control signals and the like and receives images captured by the camera while continuously communicating with the analog camera and the digital camera; A detection area setting unit for selectively selecting only a lane change prohibition area from an image photographed by an analog camera and setting it as a violation area; An image comparison unit for comparing the before and after screens of the received images to determine whether the vehicle has entered the lane change prohibition area of the photographed screen and changed lanes; A vehicle tracking unit configured to give an identification mark to the determined vehicle, track until the vehicle leaves the lane change prohibition area, and generate a photographing signal when it is determined that the vehicle enters the lane change prohibition area as a result of the screen comparison of the image comparison unit; A photographing instruction unit configured to transmit a photographing signal to the digital camera when the photographing signal is generated by the vehicle tracking unit and the violation vehicle enters the photographing area of the digital camera; A vehicle number detection unit for detecting a vehicle number from the license plate of the photographed violation vehicle received from the digital camera; A vehicle number confirmation unit connected to a vehicle tracking network in which information about the vehicle is registered and confirming information on the owner of the detected vehicle number; A bill issuing unit for outputting a lane violation notice for the owner of the vehicle number identified in the vehicle number checking unit; Vehicle number storage unit for storing and managing the image, shooting time and bill issued number, etc. of the vehicle entering the lane violation prohibition area photographed by the analog camera and the digital camera; Road lane violation monitoring and tracking system comprising a control unit for controlling the data flow in the various cameras, license plate recognition system and vehicle tracking network. The road lane violation monitoring and tracking system according to claim 2, wherein the identification mark of the vehicle tracking unit is any one selected from a number, a color, and a box shape. It is installed so that the road including the lane change prohibited area can be taken as the shooting area of the analog camera, and the position and angle where the license plate can be taken as the shooting area of the digital camera. Setting an image capturing area; Photographing a lane change prohibition zone continuously photographed by the analog camera and transmitting the photographed image to a license plate recognition system; Selectively selecting only lane change prohibition zones from an image captured by an analog camera and setting a violation zone; Determining whether the vehicle has changed lanes in the lane change prohibition area by continuously comparing the front and rear screens of the lane change prohibition area among the images received from the analog camera; When the lane violation vehicle is identified, giving an identification mark to the violating vehicle, generating a photographing signal, and tracking the vehicle until it leaves the photographing area of the analog camera; Transmitting a photographing signal to the digital camera when the violation vehicle reaches the photographing region of the digital camera; The digital camera photographing a violation vehicle according to the received photographing signal and transmitting a photographed image; Checking a vehicle number from an image received from the digital camera; Identifying the owner of the vehicle by querying the identified vehicle number on a vehicle inquiry network; And And outputting a lane violation notice for the owner of the vehicle, and storing the output data together with the lane change image of the vehicle.