KR20210121988A - Apparatus, system or method for monitoring vehicle traffic - Google Patents

Abstract

The present invention relates to an apparatus for monitoring inter-point vehicle traffic using a captured image on the space in front of or behind a traveling vehicle. The apparatus includes: a travel information generation unit acquiring travel information including the forward or backward captured image related to the vehicle, imaging position, imaging time, and direction of travel of the vehicle at each of the points; a travel image processing unit extracting characteristic information on the vehicle including the license plate number thereof from the forward or backward captured image related to the vehicle; a travel information analysis unit analyzing the path of travel of the vehicle related to the points using the travel information and the characteristic information; and a travel information correction unit generating, in a case where the forward and backward captured images are in the captured image on the vehicle with respect to a two-point section on the path of travel of the vehicle, correction information on at least one of the distance of the section and the time spent for the vehicle to pass through the section.

Description

Apparatus, system or method for monitoring vehicle traffic

The present invention relates to an apparatus, system or method for monitoring vehicle traffic, and more particularly, in calculating a section speed using driving information of a vehicle obtained using a camera or radar, or calculating the section speed It relates to a calibration method that can be used.

In addition, the present invention relates to detecting a violation of traffic laws by using driving information of a vehicle within a section consisting of two points.

1. Section crackdown

Section enforcement related to the present invention is mainly performed on a highway or high-speed road, etc., and is a control method for detecting speeding by measuring section speed. Section enforcement is the time taken for two sets of speed measuring equipment (composed of a camera and radar, etc.) installed to face the driving direction of the vehicle installed at the start and end points of the section, respectively, to pass through the two points and the distance between the two points. It entails the process of calculating the average driving speed of the vehicle in the corresponding section by measuring . As a contrasting concept of section enforcement, there is a spot control method, which calculates the driving speed through one set of speed measuring equipment at one point. However, the spot enforcement can be avoided by avoiding the decelerating kangaroo driving only around the installed camera, so there is a problem in that the effect of keeping the driver within the speed limit is weak.

According to the research data published by the Road Traffic Authority (“Effect Analysis and Installation Criteria for Section Enforcement Equipment”), the number of accidents, Equivalent Property Damage Only (EPDO), and casualties before and after installation of section enforcement equipment It can be seen that the occurrence rate is significantly reduced, and the average speed of section driving and the rate of exceeding the speed limit are also reduced. Accordingly, it is expected that the section enforcement equipment and section installation will be expanded.

However, in the case of section enforcement, since at least two sets of enforcement devices are required, there is a problem that an increase in installation and management costs is inevitable.

2. Enforcement of low-speed sections, such as child/elderly sanctuaries

Speeding enforcement in low-speed sections such as child protection zones set up around elementary schools and senior protection zones set up in areas with a large number of elderly people outside the city center are being cracked down on a point-by-point basis. However, the operation against the purpose of the protection zone is still running in the same way as mentioned in the problem of branch enforcement described above, such as kangaroo driving. According to the legislative purpose of the Diet Act, etc., enforcement of sections within these protected areas can be a more essential method of enforcement. However, even in this case, there is a problem in that the cost problem described above occurs because it is a section control, and since it is a relatively low speed section, there is a requirement that the measurement of the driving speed should be more precise.

The present invention is to improve the method of section speed control described above, and more particularly, a section speed measuring device or method capable of accurate section speed measurement without increasing the number of equipment or devices for overspeed control or speed measurement, or We would like to propose a device or method for speeding enforcement in the section used, and achieve it through the following solutions.

In addition, the present invention intends to propose a device, apparatus or method for detecting a violation of traffic laws using driving information of a vehicle within a section consisting of two points, and to achieve it through the following solutions.

The problems to be solved in the present invention are not limited to the problems to be solved, and other problems not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. There will be.

In the apparatus for monitoring vehicle passage between a plurality of points using a front or rear photographed image of a moving vehicle according to an embodiment of the present invention, the apparatus includes a front or rear photograph of the vehicle at each of the plurality of points a driving information generator for acquiring driving information including an image, a shooting location, a shooting time, and a driving direction of the vehicle; a driving image processing unit for extracting characteristic information of the vehicle including a vehicle number from the front or rear photographed image of the vehicle; a driving information analysis unit that analyzes the driving route of the vehicle related to the plurality of points by using the driving information and the characteristic information; And, on the driving route of the vehicle, if the photographed image of the vehicle for the section consisting of two points includes the front photographed image and the rear photographed image of the vehicle, the distance of the section or the time taken to pass the section of the vehicle It may include a driving information correction unit that generates correction information for at least one of the time.

Additionally or alternatively, the apparatus may further include a section speed calculator configured to calculate the running speed of the vehicle in the section by using the distance of the section, the time taken to pass through the section, and the correction information.

Additionally or alternatively, the correction information may be generated based on the electric field information of the vehicle.

Additionally or alternatively, the driving information correcting unit may obtain the electric field information of the vehicle from an external device by using the characteristic information.

Additionally or alternatively, the driving information correcting unit may acquire the electric field information of the vehicle from information stored therein by using the characteristic information.

Additionally or alternatively, the driving information analysis unit may detect a traffic law violation of the vehicle by using the driving information and the characteristic information for the section or point.

Additionally or alternatively, the driving information analysis unit may select a driving route for calculating the section speed by using the driving direction of the vehicle obtained from two pieces of driving information acquired in chronological order.

Additionally or alternatively, the device may further include a control unit capable of classifying, sorting, or searching the driving information and the characteristic information according to specific reference information.

Additionally or alternatively, the control unit may control at least one of the driving information, the characteristic information, the correction information, the section speed, and the traffic law violation related information related to crime prevention, infection disease prevention, livestock vehicle management, and old vehicle management. It may include an interface for interfacing with the system.

Additionally or alternatively, the driving information generating unit may acquire the point speed of the vehicle calculated at each of the plurality of points from the device for measuring the vehicle traveling speed.

Additionally or alternatively, the driving information generating unit may further include an interface for receiving state information of a traffic light for controlling or controlling the driving of the vehicle at each of the plurality of points.

In the method for monitoring vehicle traffic between a plurality of points using an image taken from the front or rear of a moving vehicle according to another embodiment of the present invention, the method includes: the front or rear of the vehicle at each of the plurality of points obtaining driving information including a rear-captured image, a shooting location, a shooting time, a driving speed of the vehicle, and a driving direction of the vehicle; extracting characteristic information of the vehicle including the vehicle number from the front or rear photographed image of the vehicle; analyzing the driving route of the vehicle related to the plurality of points by using the driving information and the characteristic information; And, on the driving route of the vehicle, if the photographed image of the vehicle for the section consisting of two points includes the front photographed image and the rear photographed image of the vehicle, the distance of the section or the time taken to pass the section of the vehicle It may include generating correction information for at least one of time.

The above problem solving methods are only some of the embodiments of the present invention, and various embodiments in which the technical features of the present invention are reflected are based on the detailed description of the present invention to be described below by those of ordinary skill in the art can be derived and understood as

According to the present invention, since the section speed can be calculated through the front and rear images of the vehicle, there is no need to additionally install a camera facing the driving direction of the vehicle. Since the section speed of the traveling vehicle can be precisely calculated, reliability can be improved during speed control.

According to the present invention, it is possible to detect a vehicle that violates traffic laws, such as an illegal U-turn and an illegal left turn, in addition to speed control.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included as a part of the detailed description for better understanding of the present invention, provide embodiments of the present invention, and together with the detailed description, explain the technical spirit of the present invention.
1 is an example of a speed measuring device installed on a road and its system configuration.
2 shows a front or rear image of a vehicle taken with a camera of a speed measuring device.
3 shows all cases of vehicle-captured images at two points captured by a camera of a speed measuring device.
4 is a diagram for explaining a situation in which a photographed image may be acquired at two points.
5 is a diagram for explaining a distance or time correction between two points.
6 illustrates an example in which traffic law violations can be detected using vehicle operation information between two points.
7 shows a flowchart of a method for generating correction information according to the present invention.
8 shows a block diagram of an apparatus according to the invention;

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be implemented in various other forms. The terminology used in this specification is intended to help the understanding of the embodiments, and is not intended to limit the scope of the present invention. Also, singular forms used hereinafter include plural forms unless the phrases clearly indicate the opposite.

1 is an example of a device for measuring a vehicle traveling speed installed on a road or a system configuration therefor.

The system may include a camera 1 , vehicle detection sensors 2_a , 2_b , 2_c , 2_d , a controller enclosure 3 , and a server 4 . The camera 1 is a device for recognizing a vehicle and a license plate of the vehicle, and is installed on a post on the road or installed in a mobile camera installation box on the outside of the road. Cameras vary according to types of image sensors, image recognition characteristics, or physical characteristics.

The vehicle detection sensors 2_a, 2_b, 2_c, and 2_d are means for detecting a vehicle, and may include at least one of an electromagnetic sensor, a radar sensor, and an image sensor. An example of the electromagnetic sensor is a loop detector buried in a road, which has been widely used in the prior art, and detects the passage of two loops (2_a and 2_b or 2_c and 2_d) buried in the road, and the vehicle travels through the time in between. speed can be calculated. Shown is a loop detector. The image sensor detects the vehicle through the acquired high-definition image, and calculates the driving speed of the vehicle using the image sensor. It is installed as a separate unit next to the camera.

The controller housing 3 may receive information related to vehicle operation from a camera and a vehicle detection sensor, and may calculate the traveling speed of the vehicle or transmit the information to the server for calculation.

The server 4 is linked with a situation room such as a video control room center operated by the National Police Agency, etc., and collects information measured by various speed measuring devices, calculates the driving speed of the vehicle, and issues a notice of fine for negligence when the speed limit is violated , a device for management, etc.

An object of the present invention is to provide a correction method for calculating vehicle traveling speed or a method for calculating section speed that can be applied to any type of camera or vehicle detection sensor above. That is, the present invention is not limited to the equipment or system for measuring the vehicle traveling speed shown in FIG. 1, and the scope of the right is not limited thereto.

2 illustrates a front or rear image of a vehicle captured by a camera for measuring vehicle traveling speed.

The left image 21 is an example of a front image of the vehicle captured by the camera. In general, in Korea, the front of the vehicle is photographed as in the image on the left to obtain a license plate and a front view of the vehicle, which are attached to a penalty notice, etc.

The right image 22 is an example of a rear image of the vehicle captured by the camera. In general, in the case of speeding enforcement in Korea, the front of the vehicle is captured as shown in the left image to obtain a license plate and a front view of the vehicle.

The reason why the rear of the vehicle is photographed and used to measure the driving speed of the vehicle is, as shown in FIG. 4, a technology capable of photographing and monitoring a multi-lane through a single camera device has been spread, and as in the past, each lane This is because the cost can increase exponentially by installing equipment to measure the driving speed of each vehicle. That is, in order to measure the section speed of the two-lane reciprocating lane shown in FIG. 4, a total of four speed measuring devices (cameras, vehicle detection sensors, etc.) will be required in the conventional method of installing for each lane, but in FIG. It is possible to enforce section enforcement of two-lane round-trip lanes through measuring equipment.

3 shows examples of all cases of vehicle-captured images at two points captured by a camera for measuring vehicle traveling speed.

The present invention considers both cases in which the camera photographs the vehicle in a direction opposite to the traveling direction of the vehicle as in the prior art for speed measurement, or the camera photographs the vehicle in a direction that coincides with the traveling direction of the vehicle. . Accordingly, as in the uppermost example 31, the captured images for the same vehicle C acquired at each of the two points (first and second points) may all be the front image of the vehicle C, and the second example below that (32) It may be a front and rear image of vehicle C at each of two points, as in the third example (33) below, and may be a rear and front image of vehicle C at each of two points, as in the last example (34) below. At each of the two points, it may be a rear image of vehicle C. In this case, it is assumed that the first point is a location where the vehicle passed earlier than the second point.

FIG. 4 is intended to describe a situation in which a photographed image of a vehicle obtained at two points illustrated in FIG. 3 may be obtained.

The two sections (section A'-B' and section C'-D', respectively) shown in FIG. 4 will be described as an example. A'-B' section and C'-D' section are independent sections, and it can be assumed that they are separated from each other. For example, a vehicle may drive through points A', B' and C', D' in chronological order, but without considering which route it travels between B' and C', or The vehicle may drive through points C', D' and B', A' in chronological order. To explain all possible examples, the vehicle may travel through points A', B' and D', C' in chronological order, or travel through points B', A' and C', D'. may, or may drive through points B', A' and D', C', or may drive through points C', D' and A', B', D', C You can drive through points 'and A' and B', or you can drive through points D', C' and B', A'. Here is a list of all possible routes in chronological order:

Example 1: (A', B', C', D')

Example 2: (A', B', D', C')

Example 3: (B', A', C', D')

Example 4: (B', A', D', C')

Example 5: (C', D', A', B')

Example 6: (C', D', B', A')

Example 7: (D', C', A', B')

Example 8: (D', C', B', A')

As shown, a range 45 of a certain area may be photographed by the speed measuring camera 43 in the section A'-B', which means that at least the two lanes shown may be photographed. In the two lanes, the driving direction of the vehicle is in the opposite direction (d), which corresponds to a round-trip two-lane commonly seen around us.

All vehicles traveling in the two lanes may be photographed by the camera 43, so that a front image of the vehicle traveling from point A' to B' is acquired, and the rear of the vehicle traveling from point B' to A' image can be obtained.

The camera 44 may also photograph the range 46 of a predetermined area in the section C'-D', and may photograph at least two lanes. In the two lanes, the driving directions of the vehicle are opposite to each other (d). The camera 44 may acquire a rear image of the vehicle traveling from point C' to point D', and may acquire a front image of the vehicle traveling from point D' to point C'.

According to the eight routes illustrated above, when an image of a vehicle is obtained from the cameras 43 and 44, in the first example and the eighth example, the front/rear image as shown in 32 of FIG. 3 is obtained, and in the second example, In the seventh example, the anterior/anterior image as shown in 31 of FIG. 3 is obtained, in the third and sixth examples, the posterior/posterior image as in 34 of FIG. 3 is acquired, and in the fourth and fifth examples, FIG. 3 A rear/front image such as 33 of may be obtained.

Meanwhile, although FIG. 4 shows a two-lane road running in both directions, the application of the present invention is not applied only to this case. For example, it may be applied to a road with two or more lanes in one direction, and one of two points constituting the section may be a road with two or more lanes in both directions, and the other may be applied to a road with two or more lanes in one direction.

Accordingly, the images of the vehicle acquired through the speed measuring cameras installed at two points on the general road may be organized into four types shown in FIG. 3 .

5 is a diagram for explaining a distance or time correction between two points related to section speed measurement.

(a), (b), (c), and (d) of FIG. 5 are diagrams illustrating different cases, respectively, and the two cameras 51, 52, 53, 54, 55, 56, 57, 58 are It shows a state in which the vehicles C1, C2, C3, and C4 are driven in the direction of the arrows shown at two installed points, and each camera shows that the vehicle is being photographed. Although two vehicles are shown in each figure, it should be noted that the figure of a vehicle traveling to the top is overlapped in the chronological order from the bottom to the top.

Before describing the present invention, a brief description will be given of section control. Section enforcement measures the average driving speed of a vehicle between two points and imposes a fine depending on whether the speed limit is exceeded. For example, if the distance between two points is 10 kilometers, and the speed limit (regulation) is 100 kilometers per hour, the vehicle will exceed the speed limit if it passes the two points within 6 minutes (0.1 hours), which is a violation of the speed limit .

In addition, when the average driving speed of the vehicle measured between the two points is less than the minimum speed of the corresponding section, violation of the minimum speed may be detected.

In addition, by monitoring the average driving speed of vehicles passing through the section, the traffic condition of the section can be determined. That is, whether traffic communication in the corresponding section is smooth, traffic congestion is severe, or the level thereof can be determined through the value and distribution analysis of the average driving speed of the corresponding vehicles.

From the prior art to the present, the driving speed of the vehicle was measured using the camera at the two points illustrated in FIG. In the same way, in this case, the section driving speed of the vehicle can be properly calculated without performing the correction to be considered in the present invention. That is, S shown in (a) of FIG. 5 is the distance or length of the section between the two installed cameras, which is measured or preset in advance (this is also in (b), (c) and (d) of the remaining FIG. same), it is assumed that vehicle images captured by the installed cameras 51 and 52 are acquired at positions separated from each other by D1 (D1 is the distance the vehicle actually moves). This is the same even in the case shown in (d) of FIG. 5 , that is, S(=D4) and the image of the vehicle photographed by the two cameras 57 and 58 may be acquired at a position exactly separated by D4 from each other. The section driving speed V of the vehicles C1 and C4 shown in FIGS. 5A and 5D is S/t, t is the time taken to pass the section, and the start and end of the section It may be determined by a difference in shooting times of images captured at the point.

In the example of (a) and (d) of Figure 5, as described above, since the length (S) of the actual section and the distance the actual vehicle moved (D1, D4, respectively) are the same, the correction proposed in the present invention is It is not necessary.

Referring to (b) of FIG. 5 , the section S to be controlled by the driving speed measuring system (or camera) is predetermined. However, since the camera 54 is installed or configured to photograph the rear of the vehicle C2, the distance D2 actually moved by the vehicle is not the same as the length S of the section. The distance D2 actually moved by the vehicle C2 is equal to the length S of the section plus the length of the vehicle or the total length L. Accordingly, the section running speed V of the vehicle C2 is (S+L)/t, t is the time taken to pass through the section, and the shooting time of the image taken at the start and end points of the section can be determined by the difference between

In addition, referring to FIG. 5C , the section S to be controlled by the driving speed measuring system (or camera) is predetermined. However, since the camera 55 is installed or configured to photograph the rear of the vehicle C3, the distance D3 actually moved by the vehicle is not the same as the length S of the section. The distance D3 actually moved by the vehicle C3 is equal to the length S of the section minus the length of the vehicle or the overall length L. Accordingly, the section running speed V of the vehicle C2 is (SL)/t, t is the time taken to pass through the section, and the difference between the shooting times of the images taken at the start and end points of the section can be determined as

As such, the reason that the length or the overall length of the vehicle should be considered is that there may be a case where the length S of the actual section is relatively short. In the section for section enforcement on the currently installed highway, the section length is considerably longer than the length of the vehicle, so the effect of the vehicle length on the calculated section speed is limited. However, as described above, there is a way to avoid crackdowns on kangaroo driving in sections such as child protection zones, and since the purpose and effect of designation of the protection zone may not meet expectations, a more appropriate way to crack down on the zone is can be In a short zone with a relatively low speed limit, such as a child protection zone, if the section is enforced, the length of the vehicle can have a large effect on the section speed or the calculation/calculation of section speed because the section length is short. These vehicle length-related corrections affect the measurement of the lowest speed as well and may need to be taken into account in the speed measurement. Therefore, the length of the vehicle should be considered in calculating the speed for section control, and correction is required as described above.

Meanwhile, it is possible to correct not only the length of the section according to the overall length or length of the vehicle described above, but also the time taken for the vehicle to pass through the section. In an example such as (b) of FIG. 5, the time required to travel as much as the length of the vehicle is added from the difference in time when the two images are actually taken, and in the example of FIG. 5 (c), In fact, the time required for passing the section may be corrected by subtracting the time required to travel the length of the vehicle from the difference in time at which the two images were captured.

As an example of determining the time traveled by the length of the vehicle, the ratio of the length of the corresponding section to the length of the vehicle is the difference between the time the two images are captured (that is, the time taken to pass the corresponding section) and the length of the vehicle. It can be estimated that it is equal to the ratio of the time traveled by the length. In this example, the time traveled by the length of the vehicle may be determined as a value obtained by multiplying the time taken for passing the corresponding section by the ratio of the length of the vehicle to the length of the section.

6 illustrates an example in which traffic law violations can be detected using vehicle operation information between two points.

What is shown is a view from an intersection. A case in which driving in the B direction is not permitted from the driving in the A direction is shown due to the prohibition of left turns at the intersection. However, suppose that a state in which a specific vehicle travels in the A direction is photographed by the camera 61 , and then a state in which the same vehicle travels in the B direction is photographed by the camera 62 . Each camera may be a camera for measuring speed or a camera for cracking down on traffic law violations. The images captured by each camera include time information, and accordingly, whether the vehicle is illegally driving is determined according to the difference between the recording time of the image photographed by the camera 61 and the photographing time of the image photographed by the camera 62 . can be judged. For example, if the difference between the shooting times is shorter than a predetermined time, it may be determined that the vehicle has made an illegal left turn. Here, the predetermined time will be a time enough to not pass unless the vehicle makes an illegal left turn. That is, a portion of the time taken for the vehicle to pass through the two points, the driving direction of the vehicle, and the distance between the two points may be used in the detection for the traffic law.

7 is a flowchart of a method for monitoring vehicle traffic between a plurality of points using an image taken from the front or rear of a moving vehicle according to the present invention. The method may be performed by a device for monitoring vehicle traffic or a device for measuring speed.

The device may obtain driving information including at least one of an image taken front or rear of the vehicle, a shooting location, a shooting time, a driving speed of the vehicle, and a driving direction of the vehicle ( S710 ). At least one of the driving information may be obtained from equipment for measuring vehicle driving speed, and the 'equipment for measuring vehicle driving speed' is not limited to the corresponding name, and detects the vehicle, described above with reference to FIG. It may include a device, device, or system capable of calculating the traveling speed of the corresponding vehicle.

Then, the device may extract the characteristic information of the vehicle from the front or rear image of the vehicle (S720). The characteristic information of the vehicle may include, but is not limited to, a vehicle number, a vehicle type, or a vehicle color. Preferably, the characteristic information of the vehicle may include at least a vehicle number of the vehicle.

The device may analyze the driving route of the vehicle related to the plurality of points by using the driving information and the characteristic information (S730).

The analyzed driving route should basically coincide with the route traveled by the vehicle over time, and may be obtained using a vehicle number recognized in each photographed image and a photographing time. Accordingly, the actual driving route of the vehicle must be estimated using the driving information and the characteristic information, and for this purpose, the driving information and the characteristic information and the distance between each point stored or obtained in advance may be used.

For example, the driving route may be selected by using the driving direction of the vehicle of the two pieces of driving information acquired in chronological order. This is because it is inaccurate to specify the driving route of the vehicle only with the captured image and the location information included in the driving information of the vehicle. In addition, the driving route may be selected using the photographing time of two pieces of driving information acquired in time order. In two consecutive driving information in time sequence, if the difference between the acquisition times (ie, shooting time) is equal to or greater than a predetermined value, the corresponding driving information is not valid in the type of control such as section speed control. It is necessary to classify the information as not information or to manage and analyze the driving route of the vehicle as being separated based on the relevant part. Here, the predetermined value may be determined based on the distance between the two locations from which the driving information is obtained and/or the driving direction of the corresponding vehicle.

In the device, if one of the two captured images of the vehicle for a section consisting of two points among the plurality of points on the driving route of the vehicle is a front captured image of the vehicle and the other is a rear captured image of the vehicle, the Correction information for at least one of a distance of a section or a time required for the vehicle to pass through the section may be generated (S740).

In addition, the device may calculate the driving speed of the section of the vehicle by using the distance of the section, the time taken to pass through the section, and the correction information, wherein the correction information is based on the electric field information of the vehicle can be created by

The battlefield information of the vehicle may be obtained from vehicle identification information of the corresponding vehicle number stored in an external device by using the vehicle number or type among the characteristic information, or may be obtained from battlefield information of the corresponding vehicle type. Here, the type of vehicle may be classified by the model (name) and/or year of the actual vehicle, or may be classified by the purpose of the vehicle. The use of the vehicle may include a light car, a passenger car, a leisure vehicle, a small truck, a small bus, a medium-sized bus, a large truck, a large dump truck, and the like. Meanwhile, the battlefield information may be previously stored in the database unit of the device, and in this case, the battlefield information may be obtained from the database unit.

In addition, the device may detect a violation of a traffic law of the vehicle by using the driving information or the characteristic information for the section or point. As described with reference to FIG. 6 , this means detecting a case in which driving is impossible on a driving route according to traffic laws. In addition, the device may also determine whether the vehicle is a vehicle corresponding to a traffic restriction or entry restriction with respect to a corresponding road (location) using the driving information or the characteristic information for the section or point. Here, the restriction or restriction of entry refers to the entry or restriction of entry or passage into a specific road section of a specific vehicle (including at least one of freight cars, construction machinery and special vehicles, high-pressure gas transport tank lorries, and explosives transport vehicles, etc.), or It means entry or passage restriction on a specific road section, but is not limited thereto. In addition, the device may determine the loading failure by extracting the state of the loading box of the vehicle using the driving information or the characteristic information for the section or point.

The device may provide a function for classifying, sorting, or searching the driving information and the characteristic information according to specific reference information.

In addition, the device may receive information of a vehicle traffic light or status information (eg, a red light, a yellow light, a blue light, a left turn signal light, etc.) for the vehicle at each of the plurality of points. Here, the vehicle traffic light for the vehicle means a traffic light for controlling or controlling the driving of the vehicle, and may mean a traffic light in the corresponding section or point for the driving direction in which the vehicle travels normally or in accordance with traffic laws. have.

8 shows a block diagram of an apparatus 1000 according to the present invention.

The device according to the present invention includes a driving information generating unit 100 , a driving image processing unit 200 , a driving information analyzing unit 300 , a driving information correcting unit 400 , a section speed calculating unit 500 , and a control unit 600 . may include In addition, the device further includes a communication unit 700 for communicating with an external device, and a database unit 800 that can store information obtained by the configuration of the device or other various information necessary for practicing the present invention. can do.

The driving information generator 100 may acquire an image by photographing a vehicle traveling on a road at a specific point, and acquire driving information therefrom. The driving information may include at least one of time and location information at which the vehicle image was acquired (corresponding to a camera installation location), a driving speed at a corresponding point detected and calculated for the corresponding vehicle, and driving direction information of the vehicle. Meanwhile, the distance between points where each camera (or speed measuring device, etc.) is installed may be stored in the database unit of the device.

The vehicle detection sensor for detecting the vehicle or the equipment for measuring the vehicle traveling speed includes at least one of a radar sensor, an image sensor, and an electromagnetic sensor, and detects the vehicle, calculates the traveling speed of the vehicle, and It is possible to obtain including the direction and position of movement. Accordingly, at least one of the driving information may be obtained from equipment for measuring vehicle driving speed. Thus, the above-described device, device, or system capable of detecting the vehicle and calculating the driving speed of the corresponding vehicle may be included.

If a moving image or a plurality of (eg, 8 to 30 fps) still images are taken by shooting a vehicle traveling on the road, it is possible to obtain an image including the entire process of entering and exiting the vehicle.

The method of photographing and acquiring a driving vehicle is composed of a method of photographing the front of a vehicle entering in the direction of a holding in which the camera is installed (21 in FIG. 2) and a method of photographing the rear of an advancing vehicle (22 in FIG. 2). . Hereinafter, an image of the front of the vehicle is referred to as a "front image", and an image of the rear of the vehicle is referred to as a "rear image".

In the case of front shooting, when the vehicle enters a predetermined point, the front of the vehicle is detected to obtain a front image, and the rear image is preferably obtained at a time when the vehicle is detected and passed through to advance to a predetermined point.

In addition, the driving information generating unit may further include an interface for receiving information or state information (eg, red light, yellow light, blue light, left turn signal light, etc.) of the vehicle traffic light for the vehicle at each of the plurality of points. . Here, the vehicle traffic light for the vehicle means a traffic light for controlling or controlling the driving of the vehicle, and may mean a traffic light in the corresponding section or point for the driving direction in which the vehicle travels normally or in accordance with traffic laws. have.

The driving image processing unit 200 may extract characteristic information by photographing a vehicle driving on a road and analyzing the vehicle image. The characteristic information includes the number of the vehicle, and may include information included in the vehicle image, for example, the type of vehicle, the color of the vehicle, and the state of the occupant (seat belt, occupant status, etc.). The driving image processing unit is configured to include an algorithm for analyzing the vehicle image.

The driving information analysis unit 300 may receive the driving information and the characteristic information, and estimate or analyze the driving route of the vehicle using the received driving information. The driving information and the characteristic information should be used for a specific vehicle, and analysis should be performed on a captured image having the same vehicle number among the characteristic information.

Preferably, the analyzed driving route should basically coincide with the route the vehicle has moved over time, and may be obtained using the vehicle number and the photographing time recognized in each photographed image.

Accordingly, the actual driving route of the vehicle should be estimated using the driving information and the characteristic information, and for this purpose, the driving information and the characteristic information and the distance between each point stored or obtained in advance may be used.

As mentioned above, when a single camera can capture a lane in both directions, the driving direction of the vehicle is also required to analyze the driving route. Since there are cases where there are actually at least two paths moving between any two points on which a camera for speed measurement, etc. are installed, the driving information analysis unit determines that the vehicle has moved in consideration of the driving direction of the vehicle. will be able to choose Accordingly, the driving information analysis unit may select or select the driving route of the vehicle by using the driving direction of the vehicle obtained from the two driving information acquired in chronological order, and based on the selected or selected driving route, A section speed can be calculated. For example, when two driving paths are possible for a section composed of two points, one driving path may be selected in consideration of the driving direction of the vehicle.

In addition, in analyzing the driving route, the driving information analysis unit may analyze and determine whether there is any illegality in the corresponding driving route. For example, it is possible to analyze various types of driver's violations using driving information and/or characteristic information of a plurality of adjacent points.

Whether the driving route is illegal may be determined depending on whether the photographed image of the vehicle is a front image or a rear image on a specific lane (eg, reverse driving on a one-way road, illegal U-turn, etc. That is, whether traffic laws are violated) can be determined). For example, it is possible to extract the lane violation information by analyzing the driving information. It is possible to detect whether the driving information for a predetermined vehicle is driving information that cannot be generated unless, for example, an illegal U-turn is made. It is possible to detect or determine driving information that cannot be generated without doing this.

On the other hand, it is possible to determine whether the vehicle in which the at least two pieces of driving information exists has traveled through a legal movement path.

In addition, it is also possible to determine whether the vehicle is a vehicle corresponding to a traffic restriction or entry restriction with respect to a corresponding road (location) using the driving information or the characteristic information for the section or point. Here, the restriction or restriction of entry refers to the entry or restriction of entry or passage into a specific road section of a specific vehicle (including at least one of freight cars, construction machinery and special vehicles, high-pressure gas transport tank lorries, and explosives transport vehicles, etc.), or It means entry or passage restriction on a specific road section, but is not limited thereto. In addition, the device may determine the loading failure by extracting the state of the loading box of the vehicle using the driving information or the characteristic information for the section or point.

In addition, through this, the effect of inducing and forcing the driver to drive lawfully outside the shooting point of the video for unmanned enforcement can be expected.

The driving information correcting unit 400 may perform distance correction or speed correction for calculating the section speed of the driving vehicle based on the analyzed driving route provided by the driving information analyzing unit. At this time, in the image of a plurality of specific vehicles photographed at a plurality of points, when the vehicle images at two points to be used for section enforcement, etc. are a front image and a rear image, respectively, the driving distance ( length of the section) or driving time can be corrected. The electric field information of the vehicle to be used for the correction may be obtained by feature information extracted from the photographed image of the vehicle, that is, the vehicle number or vehicle type. Here, the type of vehicle may be classified by the model (name) and/or year of the actual vehicle, or may be classified by the purpose of the vehicle. The use of the vehicle may include a light car, a passenger car, a leisure vehicle, a small truck, a small bus, a medium-sized bus, a large truck, a large dump truck, and the like. The electric field information may be stored in a configuration such as the driving information correcting unit or a database unit inside the device, or may be stored in a specific external device and received therefrom.

The section speed calculation unit 500 uses the distance information between the two points (that is, section) where the driving information is generated and the correction information (corrected distance or time information) generated by the driving information correcting unit to determine the speed of the corresponding vehicle. The section speed can be calculated. That is, the section speed calculator may calculate the section speed by using the time difference and distance information using at least two pieces of driving information for the same predetermined vehicle.

The control unit 600 stores and classifies the information generated by the driving information generating unit, the driving information analysis unit, the driving information correcting unit, and the section speed calculating unit, and performs a function of processing and providing.

In addition, the control unit may detect whether the vehicle is speeding according to the section speed calculated by the section speed calculation unit, and may store information related to violation of traffic laws of the corresponding vehicle detected by the driving information analysis unit. Information related to speeding of the vehicle or violation of traffic laws may be stored in a database unit of the device, and/or may be transmitted to a related server device such as the National Police Agency, a local government, etc., which uses a communication interface such as the communication unit. can be done through The stored information related to speeding or traffic law violations of the vehicle may be used for determining whether to issue a fine/fine/penalty point notice, fine/fine amount, and demerit points by a separate configuration (not shown) of the device. .

In addition, the control unit is an interface for linking each information (driving information, characteristic information, section speed, traffic law violation related information) obtained from each configuration with a system related to crime prevention, infection disease prevention, livestock vehicle management, old vehicle management, etc. (not shown) may be included.

In the above specification, it has been described that the "device" and its components (driving information generator, etc.) perform the corresponding method or procedure, but the "device" and the components belonging thereto are only names, and the scope of rights is subordinated thereto. no. That is, in addition to the device, the method or procedure may be performed as a system, etc., as well as speed measurement or speed control based on speed measurement software or computer or other machine, device, etc. readable code method can be performed.

In addition, as another aspect of the present invention, the above-described proposal or operation of the invention is performed by a "computer" (a comprehensive concept including a system on chip (SoC) or (micro) processor, etc.) Code that can be implemented, implemented, or executed, or a computer-readable storage medium or computer program product storing or including the code, may also be provided, and the scope of the present invention is that the code or the storage or a computer-readable storage medium including a computer-readable storage medium or a computer program product.

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention described in the claims below. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

100: driving information generation unit 200: driving image processing unit
300: driving information analysis unit 400: driving information correction unit
500: section speed calculation unit 600: control unit
700: communication unit 800: database unit

Claims (12)

In an apparatus for monitoring vehicle traffic between a plurality of points using a front or rear photographed image of a moving vehicle,
a driving information generating unit configured to obtain driving information including a front or rear image of the vehicle, a shooting location, a shooting time, and a driving direction of the vehicle at each of the plurality of points;
a driving image processing unit for extracting characteristic information of the vehicle including a vehicle number from the front or rear photographed image of the vehicle;
a driving information analysis unit that analyzes the driving route of the vehicle related to the plurality of points by using the driving information and the characteristic information; and
On the driving route of the vehicle, when the photographed image of the vehicle for the section consisting of two points includes the front photographed image and the rear photographed image of the vehicle, the distance of the section or the time taken to pass the section of the vehicle A device for monitoring vehicle traffic, comprising a driving information correction unit for generating correction information for at least one of. The method of claim 1, further comprising: a section speed calculator configured to calculate the running speed of the vehicle in the section by using the distance of the section, the time taken to pass through the section, and the correction information. device for. The apparatus of claim 1 , wherein the correction information is generated based on electric field information of the vehicle. The apparatus of claim 1 , wherein the driving information correcting unit acquires the electric field information of the vehicle from an external device using the characteristic information. The apparatus of claim 1 , wherein the driving information correcting unit acquires the electric field information of the vehicle from information stored therein by using the characteristic information. The apparatus of claim 1 , wherein the driving information analysis unit detects a violation of a traffic law of the vehicle by using the driving information for the section or point and the characteristic information. The apparatus of claim 1 , wherein the driving information analysis unit selects a driving route for calculating the section speed by using the driving direction of the vehicle obtained from two driving information acquired in time order. . The apparatus of claim 1, further comprising a control unit capable of classifying, sorting, or searching the driving information and the characteristic information according to specific reference information. The system according to claim 8, wherein the control unit stores at least one of the driving information, the characteristic information, the correction information, the section speed, and the traffic law violation-related information for crime prevention, infectious disease prevention, livestock vehicle management, and aging vehicle management. A device for monitoring vehicle traffic, comprising an interface for interoperating with the device. According to claim 1,
The device for monitoring vehicle traffic, wherein the driving information generating unit obtains the point speed of the vehicle calculated at each of the plurality of points from the device for measuring the vehicle travel speed. According to claim 1,
The device for monitoring vehicle traffic, wherein the driving information generating unit further comprises an interface for receiving state information of a traffic light for controlling or controlling the driving of the vehicle at each of the plurality of points. In the method for monitoring vehicle traffic between a plurality of points using a front or rear photographed image of a moving vehicle,
obtaining driving information including a front or rear photographed image of the vehicle, a photographing location, a photographing time, a traveling speed of the vehicle, and a traveling direction of the vehicle at each of the plurality of points;
extracting characteristic information of the vehicle including the vehicle number from the front or rear photographed image of the vehicle;
analyzing the driving route of the vehicle related to the plurality of points by using the driving information and the characteristic information; and
On the driving route of the vehicle, when the photographed image of the vehicle for the section consisting of two points includes the front photographed image and the rear photographed image of the vehicle, the distance of the section or the time taken to pass the section of the vehicle A method for monitoring vehicle traffic, comprising generating correction information for at least one of:

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