Automobile violation video monitoring method

[0022] Embodiments of the invention. The video monitoring method for vehicle violations is to collect the monitoring video through the camera, and perform the following image processing technology on the image of the monitoring video, first find the vehicle license plate on the image, and use the vehicle license plate to perform video image positioning as an important basis for video monitoring; The illegal monitoring area is set on the image, and the location and range of the illegal monitoring area are different according to different illegal behaviors; in the entire monitoring video, through the positioning technology of the vehicle license plate, the movement of the vehicle license plate is tracked in the monitoring video Track, to detect whether the position of the vehicle license plate passes through the set violation monitoring area to determine whether the vehicle violates the regulations.

[0023] Below in conjunction with accompanying drawing, through the monitoring and the recognition of different ways of violating the rules, further set forth the monitoring method of the present invention:

[0024] 1. If figure 1 As shown, in the vehicle red light monitoring function, the violation monitoring area is set in the front and rear of the red light and stop line on the image, and the red light state can be judged by monitoring the red light state and the vehicle license plate movement track in the violation monitoring area Whether the same vehicle is in the violation monitoring area in the first state and leaves the violation monitoring area in the second state constitutes the condition for obtaining evidence of traffic violations.

[0025] The setting of violation monitoring area should take the lane stop line of violation monitoring as the monitoring area. The width of the video monitoring frame is consistent with the width of the lane, and the length within the stop line should meet the body length of a large bus (8-10 meters); stop The length outside the line should meet the length of at least half the body of a big bus (4-5 meters), so that the length of the vehicles in the city can be considered comprehensively (trucks do not enter the main urban area). Illegal evidence collection conditions, other vehicles smaller than the big bus must also run the red light, which can meet the evidence collection area of ​​the urban traffic routine vehicle running the red light illegal record, judge whether there is the same vehicle in the red light state, the first state is within the stop line or Pressing on the stop line, the characteristics of driving away from the stop line in the second state should also meet the conditions of whether the whole picture of the car and the license plate can be seen clearly.

[0026] 2. If figure 2 As shown, in the vehicle reverse driving monitoring function, two rectangular violation monitoring areas with a distance are set on the image, and the monitoring area v1 and the monitoring area v2 are defined according to the correct driving direction for the violation monitoring area. When the license plate of the vehicle in v1 and then v2 appears in the monitoring areas of v1 and v2 respectively, the car is running normally. When the license plate of the vehicle appears in the video monitoring area of ​​v1 and v2 in the order of v2 and v1 , it is determined that the vehicle is driving in the reverse direction, which constitutes the conditions for obtaining evidence for traffic violations.

[0027] 3. If image 3 As shown in , in the monitoring function of vehicles violating the pressure line, a quadrilateral violation monitoring area is set on the position of the yellow line or white solid line in the image. The width of the video detection frame in the violation monitoring area is the distance from the vehicle license plate to the side of the vehicle, and the length It depends on the actual monitoring field of view; when there is a complete vehicle license plate in the illegal video monitoring area, since the license plate of most vehicles is installed in the middle of the rear of the vehicle, when this condition is met, it can be determined that the vehicle has Driving under the line constitutes a condition for obtaining evidence of traffic violations. In the same way, the width of the illegal monitoring area should also comprehensively consider various existing vehicles, and take the minimum value from the license plate to the side of the vehicle as the judgment value, such as Chery's QQ, or BYD's F0, etc. The length from the vehicle license plate to the side of the vehicle is used as the width setting value of the video detection frame. When a vehicle license plate (including models larger than QQ and F0) is detected in the violation monitoring area, the vehicle must have been crushed. to double yellow lines or solid white lines.

[0028] 4. If Figure 4 , 5 As shown in the figure, in the monitoring function of vehicles not following the guidance arrow, if there is a lane with a guidance arrow lane on the image, a violation monitoring area is set on the side of the lane where the driving direction is not allowed. The violation monitoring area is set at the lane divider On the extension line of the line, when the license plate of the vehicle in the video appears in the violation monitoring area, it is determined that the vehicle has not driven according to the guidance arrow, which constitutes the condition for obtaining evidence of traffic violations.

[0029] like Figure 4 In the straight lane, vehicles turning left and right are not allowed. Therefore, violation monitoring areas must be set up on both sides of the extension line of the straight lane divider. When the vehicle license plate in the video appears on the left and right sides of the violation Monitor the area and determine that the vehicle violates regulations. like Figure 5 In the left-turn lane, the straight direction and the right-turn side of the lane are not allowed to drive. Violation monitoring areas are set up in front of and on the right side of the extension line of the left-turn lane to monitor whether the vehicles in the left-turn lane follow the Guidance direction arrows to travel.

[0030] 5. If Image 6 As shown, in the monitoring function of violations of vehicle violations in the restricted area, certain areas on the image that are prohibited or specified for vehicles to pass or enter are set up in the violation video monitoring area. The automatic recognition of the number plate compares the result with the preset data (vehicle number plate allowed to enter) to determine whether the vehicle can pass or enter the area, otherwise it will constitute a condition for obtaining evidence of traffic violations.

[0031] 6. If Figure 7 As shown in the figure, in the special-purpose lane driving monitoring function, the violation monitoring area is set in the special-purpose lane for specific vehicles on the image, and the specific vehicles that can pass through the special-purpose lane are counted. At the same time, through the automatic recognition of the vehicle number plate, the result is compared with the preset vehicle data, and it is determined that the vehicle is driving in the restricted area, which constitutes the condition for obtaining evidence of traffic violations.

[0032] 7. If Figure 8As shown, in the illegal parking monitoring function, the violation monitoring area is set at the position where parking is prohibited. When a vehicle number plate enters the area, the exact position of the vehicle and the license plate in the picture can be accurately calculated, and at the same time, through The number plate recognition software recognizes the accurate result of the license plate. After a certain period of time, the system performs image processing on another collected picture. If the same license plate appears in the violation monitoring area in the image processed again number, it can be determined that the car has constituted illegal parking, which constitutes the conditions for obtaining evidence of traffic violations.

[0033] 8. If Figure 9 As shown, in the speeding monitoring function, two violation monitoring areas v3 and v4 are set on the image. After calibration by the laser speedometer, the main control computer obtains a fixed frame rate of the high-definition camera per second, and inputs the road section Speed ​​limit values, road codes and geographic information as well as time calibration. When the vehicle license plate passes through the two fixed-distance violation monitoring areas v3 and v4, if the time it takes is less than the normal time to pass through the two monitoring areas, it is judged that the vehicle is speeding, which constitutes the condition for obtaining evidence of traffic violations and can pass The time used by the current vehicle accurately calculates the speed per hour of the current vehicle, and then compares it with the speed limit value to give a conclusion.

[0034] 9. If Figure 10 As shown in Fig. 1, in the function of intentionally blocking number plate monitoring, a camera is installed at both ends of the illegal monitoring area (one of which is aimed at the front of the vehicle, and the other is aimed at the rear of the vehicle). When the vehicle passes by the two cameras When comparing the illegal monitoring area, the system will locate and identify the front and rear license plates of the vehicle at the same time. If the identification results are found to be inconsistent, it can be preliminarily determined that the license plate is intentionally blocked or the front and rear license plates do not match, which constitutes a traffic violation. Evidence conditions.