CN110533921B - Triggering snapshot method and system for vehicle - Google Patents

Triggering snapshot method and system for vehicle Download PDF

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Publication number
CN110533921B
CN110533921B CN201910721712.5A CN201910721712A CN110533921B CN 110533921 B CN110533921 B CN 110533921B CN 201910721712 A CN201910721712 A CN 201910721712A CN 110533921 B CN110533921 B CN 110533921B
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vehicle
target area
weather data
laser sensor
weather
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CN110533921A (en
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李智
房颜明
马春香
信思旭
时兵兵
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Beijing Wanji Technology Co Ltd
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Beijing Wanji Technology Co Ltd
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/017Detecting movement of traffic to be counted or controlled identifying vehicles
    • G08G1/0175Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/052Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • G08G1/054Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles

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  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
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Abstract

The invention provides a triggering snapshot method and system for a vehicle, wherein the method comprises the following steps: acquiring environmental weather data in a target area; according to the technical scheme, the problems that in the related art, a snapshot mode cannot be flexibly selected according to the weather condition, and accordingly the recognition accuracy rate and the recognition efficiency of the vehicle are reduced are solved.

Description

Triggering snapshot method and system for vehicle
Technical Field
The invention relates to the field of laser radars, in particular to a triggering snapshot method and system for a vehicle.
Background
At present, a commonly used snapshot recognition system for a highway generally comprises a radar speed measurement module and a video recognition module, wherein the radar speed measurement module is used for measuring the running speed of a vehicle, the video recognition module is used for recognizing the license plate of an overspeed vehicle, the radar speed measurement module is limited by the running state (such as speed, vehicle following, parallel running and vehicle length) of the vehicle, and certainly, in the application field with high requirements on vehicle capture and license plate recognition, the video recognition equipped with the radar speed measurement module does not meet the requirements on vehicle capture and recognition of the whole section any more.
A laser sensor-based snapshot recognition system is also adopted on the highway, but the laser sensor is limited by environmental factors (fog, rain and snow), so that the function of the laser speed measurement module is reduced to different degrees along with the severity of weather, and the vehicle capturing and speed measuring capacity is reduced.
In addition, in the snapshot recognition system, each lane is provided with a high-definition recognition camera, and each lane or each section is provided with a radar speed measurement module or a laser sensor. When the radar speed measuring module or the laser sensor detects that the vehicle speed exceeds a threshold value, a camera of the corresponding lane is informed to capture, identify and evidence.
It can be seen that, in the related art, only after the speed exceeds a certain threshold value, single trigger snapshot can be performed, but under the condition that the vehicles run in parallel or follow the vehicle or at a low speed, the false capture rate and the missing capture rate of the vehicle detected by the radar speed measurement module are high, so that the camera cannot be accurately guided to perform snapshot of the vehicle, in addition, the radar test module cannot provide an accurate vehicle snapshot position, only simply inform the corresponding lane camera to perform snapshot, so that the recognition efficiency and the accuracy of the snapshot of the picture are affected, and particularly under the condition that the vehicle runs across roads, the influence degree is larger.
The snapshot recognition system based on the laser sensor generally detects overspeed by using two laser scanning lines or detects lane change of a vehicle by arranging the laser scanning lines along a lane line only when detecting that the vehicle breaks rules and regulations, informs a corresponding camera to snapshot, does not provide detailed snapshot information, and causes the recognition efficiency and accuracy of snapshot of pictures to be influenced.
Aiming at the problems that in the related art, a snapshot mode cannot be flexibly selected according to the weather condition, so that the recognition accuracy rate and the recognition efficiency of the vehicle are reduced, and the like, an effective technical scheme is not provided.
Disclosure of Invention
The embodiment of the invention provides a triggering snapshot method and system for a vehicle, which at least solve the problems that in the related art, a snapshot mode cannot be flexibly selected according to weather conditions, so that the identification accuracy rate and the identification efficiency of the vehicle are reduced, and the like.
According to an embodiment of the invention, a triggering snapshot method of a vehicle is provided, which includes: acquiring environmental weather data in a target area; and sending a working mode switching signal to an image acquisition device and/or a laser sensor in the target area according to the environmental weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to trigger and snapshot the vehicle in the target area in a working mode corresponding to the environmental weather data.
In the embodiment of the present invention, sending a working mode switching signal to an image capturing device and/or a laser sensor in the target area according to the environmental weather data includes: under the condition that the environmental weather data indicate that the target area is in first weather, sending a first working mode switching signal to a laser sensor in the target area according to the environmental weather data so that the laser sensor triggers and captures vehicles in the target area; under the condition that the environmental weather data indicate that the target area is in second weather, sending a second working mode switching signal to an image acquisition device and a laser sensor in the target area according to the environmental weather data so that the image acquisition device and the laser sensor can trigger and capture vehicles in the target area; and under the condition that the environmental weather data indicate that the target area is in a third weather, sending a third working mode switching signal to an image acquisition device in the target area according to the environmental weather data so that the image acquisition device triggers and captures the vehicles in the target area.
In an embodiment of the present invention, when the environmental weather data indicates that the target area is in a first weather and a vehicle in the target area is triggered to be captured by a laser sensor, or when the environmental weather data indicates that the target area is in a second weather and a vehicle in the target area is triggered to be captured by an image capture device and a laser sensor, the method further includes: when the vehicle is detected to trigger a preset detection section, acquiring at least one of the following information of the vehicle passing through the detection section through a laser sensor: the first time information, the vehicle head position information and the identification ID of the laser vehicle.
In an embodiment of the present invention, when the environmental weather data indicates that the target area is in a second weather and the vehicle in the target area is triggered to be captured by the image capturing device and the laser sensor, or when the environmental weather data indicates that the target area is in a third weather and the vehicle in the target area is triggered to be captured by the image capturing device, the method further includes: when the vehicle is detected to trigger a preset simulation trigger line, acquiring at least one of the following information of the vehicle passing through the detection section through the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle.
In an embodiment of the present invention, when the environmental weather data indicates that the target area is in a second weather, and the vehicle in the target area is triggered to be captured by the image capturing device and the laser sensor, the method further includes: and matching the first time information and the second time information, and matching the identification ID of the laser vehicle and the identification ID of the camera vehicle to acquire a trigger snapshot record of the same vehicle.
There is also provided, in accordance with another embodiment of the present invention, a trigger snapshot system of a vehicle, including: the weather detector is used for acquiring environmental weather data in a target area and reporting the environmental weather data to the controller; the controller is connected with the weather detector and used for sending a working mode switching signal to the image acquisition device and/or the laser sensor in the target area according to the environmental weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to trigger and snapshot the vehicles in the target area in a working mode corresponding to the environmental weather data.
In the embodiment of the present invention, the controller is further configured to send a first working mode switching signal to a laser sensor in the target area according to the environmental weather data when the environmental weather data indicates that the target area is in a first weather, so that the laser sensor performs trigger snapshot on a vehicle in the target area; under the condition that the environmental weather data indicate that the target area is in second weather, sending a second working mode switching signal to an image acquisition device and a laser sensor in the target area according to the environmental weather data so that the image acquisition device and the laser sensor can trigger and capture vehicles in the target area; and under the condition that the environmental weather data indicate that the target area is in a third weather, sending a third working mode switching signal to an image acquisition device in the target area according to the environmental weather data so that the image acquisition device triggers and captures the vehicles in the target area.
In an embodiment of the present invention, the system further includes: the laser detector is connected with the controller and used for acquiring at least one of the following information when the vehicle is detected to trigger a preset detection section when the environment weather data indicates that the target area is in a first weather and the vehicle in the target area is triggered to be snapped by the laser sensor or when the environment weather data indicates that the target area is in a second weather and the vehicle in the target area is triggered to be snapped by the image acquisition device and the laser sensor: the first time information, the vehicle head position information and the identification ID of the laser vehicle.
In an embodiment of the present invention, the system further includes: the image acquisition device is connected with the controller and used for acquiring information that the vehicle passes through at least one of the following detection sections when detecting that the vehicle triggers a preset simulation trigger line under the condition that the environmental weather data indicate that the target area is in the second weather and the vehicle in the target area is triggered to be snapped through the image acquisition device and the laser sensor, or the environmental weather data indicate that the target area is in the third weather and the vehicle in the target area is triggered to be snapped through the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle.
In an embodiment of the present invention, the controller is further configured to receive, when the environmental weather data indicates that the target area is in a second weather and a vehicle in the target area is triggered to be captured by the image capture device and the laser sensor, at least one of the following information transmitted by the laser detector: the method comprises the following steps of firstly, obtaining first time information, headstock position information, identification ID of a laser vehicle, and at least one of the following information transmitted by the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle; and matching the first time information and the second time information, and matching the identification ID of the laser vehicle and the identification ID of the camera vehicle to acquire a trigger snapshot record of the same vehicle.
According to the invention, the environmental weather data in the target area is obtained; according to the technical scheme, the problems that in the related technology, a snapshot mode cannot be flexibly selected according to weather conditions, so that the recognition accuracy rate and the recognition efficiency of the vehicle are reduced, and the like are solved, and the recognition accuracy rate and the recognition efficiency of the vehicle are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of triggering a snapshot of a vehicle according to an embodiment of the present invention;
fig. 2 is a block diagram of a trigger snapshot system of a vehicle according to an embodiment of the present invention;
fig. 3 is another structural block diagram of a trigger snapshot system of a vehicle according to an embodiment of the present invention;
fig. 4 is a block diagram of a trigger snapshot system according to a preferred embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
According to an embodiment of the present invention, there is provided a method for triggering snapshot of a vehicle, and fig. 1 is a flowchart of the method for triggering snapshot of a vehicle according to the embodiment of the present invention, as shown in fig. 1, including:
step S102, obtaining environmental weather data in a target area;
and step S104, sending a working mode switching signal to an image acquisition device and/or a laser sensor in the target area according to the environmental weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to trigger and snapshot the vehicle in the target area by adopting a working mode corresponding to the environmental weather data.
According to the invention, the environmental weather data in the target area is obtained; the method comprises the steps of sending a working mode switching signal to an image acquisition device and/or a laser sensor in a target area according to the environment weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to adopt a working mode corresponding to the environment weather data to trigger and snapshot the vehicle in the target area, namely, the image acquisition device and one or two laser sensors can be selected flexibly according to the environment weather data to trigger and snapshot.
In the embodiment of the present invention, sending a working mode switching signal to an image capturing device and/or a laser sensor in the target area according to the environmental weather data includes: under the condition that the environmental weather data indicate that the target area is in first weather, sending a first working mode switching signal to a laser sensor in the target area according to the environmental weather data so that the laser sensor triggers and captures vehicles in the target area; under the condition that the environmental weather data indicate that the target area is in second weather, sending a second working mode switching signal to an image acquisition device and a laser sensor in the target area according to the environmental weather data so that the image acquisition device and the laser sensor can trigger and capture vehicles in the target area; when the environmental weather data indicates that the target area is in a third weather, a third working mode switching signal is sent to the image acquisition device in the target area according to the environmental weather data, so that the image acquisition device triggers to capture a snapshot of vehicles in the target area, it should be noted that, in the embodiment of the present invention, the first weather may refer to a weather without rain, fog or snow (it may be understood that visibility is good and capture of the laser detector is not affected), the second weather may refer to a weather with rain, fog or snow (it may be understood that visibility is general and capture of the laser detector is not affected much), the third weather may refer to a weather with heavy rain, heavy fog or heavy snow (it may be understood that visibility is not good, greatly affecting the snapshot of the laser detector).
In an embodiment of the present invention, when the environmental weather data indicates that the target area is in a first weather and a vehicle in the target area is triggered to be captured by a laser sensor, or when the environmental weather data indicates that the target area is in a second weather and a vehicle in the target area is triggered to be captured by an image capture device and a laser sensor, the method further includes: when the vehicle is detected to trigger a preset detection section, acquiring at least one of the following information of the vehicle passing through the detection section through a laser sensor: the first time information, the vehicle head position information and the identification ID of the laser vehicle.
In an embodiment of the present invention, when the environmental weather data indicates that the target area is in a second weather and the vehicle in the target area is triggered to be captured by the image capturing device and the laser sensor, or when the environmental weather data indicates that the target area is in a third weather and the vehicle in the target area is triggered to be captured by the image capturing device, the method further includes: when the vehicle is detected to trigger a preset simulation trigger line, acquiring at least one of the following information of the vehicle passing through the detection section through the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle.
In an embodiment of the present invention, when the environmental weather data indicates that the target area is in a second weather, and the vehicle in the target area is triggered to be captured by the image capturing device and the laser sensor, the method further includes: and matching the first time information and the second time information, and matching the identification ID of the laser vehicle and the identification ID of the camera vehicle to acquire a trigger snapshot record of the same vehicle.
Therefore, according to the technical scheme of the embodiment of the invention, the multi-working-mode capturing method based on the laser sensor is provided, on one hand, the high capturing and high positioning capacity of laser detection under the normal weather condition is fully utilized, the capturing rate, the recognition efficiency and the recognition accuracy of the trigger snapshot system are improved, on the other hand, the vehicle capturing force and the recognition accuracy of the trigger snapshot system are ensured under different weather conditions through weather recognition and switching of different working modes of the camera, and the advantages of the laser detection and the advantages of the camera video detection are fully and effectively combined.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
In this embodiment, a triggering snapshot system of a vehicle is further provided, and the system is used to implement the foregoing embodiments and preferred embodiments, which have already been described and are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 2 is a block diagram of a trigger snapshot system of a vehicle according to an embodiment of the present invention, including:
the weather detector 20 is used for acquiring environmental weather data in a target area and reporting the environmental weather data to the controller;
the controller 22 is connected to the weather detector, and configured to send a working mode switching signal to the image acquisition device and/or the laser sensor in the target area according to the environmental weather data, where the working mode switching signal is used to instruct the image acquisition device and/or the laser sensor to perform trigger snapshot on the vehicle in the target area in a working mode corresponding to the environmental weather data.
With the present invention, the weather detector 20 acquires environmental weather data within the target area; the controller 22 sends a working mode switching signal to the image acquisition device and/or the laser sensor in the target area according to the environmental weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to trigger and snapshot the vehicle in the target area by adopting a working mode corresponding to the environmental weather data, namely, the image acquisition device and one or two of the laser sensors can be selected to trigger and snapshot flexibly according to the environmental weather data.
In this embodiment of the present invention, the controller 22 is further configured to send a first working mode switching signal to a laser sensor in the target area according to the environmental weather data when the environmental weather data indicates that the target area is in a first weather, so that the laser sensor performs trigger snapshot on a vehicle in the target area; under the condition that the environmental weather data indicate that the target area is in second weather, sending a second working mode switching signal to an image acquisition device and a laser sensor in the target area according to the environmental weather data so that the image acquisition device and the laser sensor can trigger and capture vehicles in the target area; and under the condition that the environmental weather data indicate that the target area is in a third weather, sending a third working mode switching signal to an image acquisition device in the target area according to the environmental weather data so that the image acquisition device triggers and captures the vehicles in the target area.
Fig. 3 is another block diagram of a trigger snapshot system of a vehicle according to an embodiment of the present invention, as shown in fig. 3, the system further includes: the laser detector 24 is connected to the controller 22, and configured to, when the environmental weather data indicates that the target area is in a first weather and a vehicle in the target area is triggered to be captured by a laser sensor, or when the environmental weather data indicates that the target area is in a second weather and a vehicle in the target area is triggered to be captured by an image acquisition device and a laser sensor, obtain, when the vehicle triggers a preset detection section, at least one of the following information that the vehicle passes through the detection section: the first time information, the vehicle head position information and the identification ID of the laser vehicle.
In an embodiment of the present invention, the system further includes: the image acquisition device 26 is connected to the controller 22, and configured to, when the environmental weather data indicates that the target area is in the second weather, and the vehicle in the target area is triggered to be captured by the image acquisition device and the laser sensor, or when the environmental weather data indicates that the target area is in the third weather, and the vehicle in the target area is triggered to be captured by the image acquisition device, and when the vehicle is detected to trigger a preset analog trigger line, obtain at least one of the following information that the vehicle passes through the detection section: license plate information, picture information, second time information and identification ID of the camera vehicle.
In this embodiment of the present invention, the controller 22 is further configured to, in a case that the environmental weather data indicates that the target area is in a second weather, and a vehicle in the target area is triggered to be captured by the image capture device and the laser sensor, receive information, transmitted by the laser detector, of at least one of: the method comprises the following steps of firstly, obtaining first time information, headstock position information, identification ID of a laser vehicle, and at least one of the following information transmitted by the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle; and matching the first time information and the second time information, and matching the identification ID of the laser vehicle and the identification ID of the camera vehicle to acquire a trigger snapshot record of the same vehicle.
The triggering snapshot process of the vehicle is explained below with reference to a preferred embodiment, but is not limited to the above technical solution of the embodiment of the present invention.
The preferred embodiment of the invention specifically provides a multi-working-mode expressway capturing triggering snapshot system and method based on a laser speed measuring module, which solves the problems of low capture rate and low identification accuracy of a snapshot camera video stream on an expressway and low capture rate caused by the influence of environmental factors or vehicle running states of a laser sensor, and as an optional embodiment, the preferred embodiment of the invention has the following specific technical scheme:
setting a plurality of detection sections in the direction perpendicular to the driving direction at certain intervals along the driving direction of a vehicle, setting a plurality of analog video trigger lines in a lane scene of each camera, completing weather identification through a weather detector, switching the camera into a laser sensor to trigger a camera snapshot working mode under the condition of non-rain, snow and fog, completing vehicle capture and trigger snapshot only through the laser sensor, switching the camera into a laser sensor trigger + video trigger mixed working mode under the condition of light rain, snow or fog, completing vehicle capture and trigger snapshot through the laser sensor and the video together, preventing the laser sensor from detecting missing, switching the camera into a video trigger working mode under the condition of medium rain, medium snow, medium fog and worse weather, completing vehicle capture and trigger snapshot only through the video, the laser sensor is prevented from missing detection or even false detection, the distinguishing of different vehicles and the position detection of the vehicles are completed, and a plurality of trigger signals are formed and used for guiding the camera to trigger snapshot evidence collection.
Fig. 4 is a block diagram of a snapshot recognition system according to a preferred embodiment of the present invention, as shown in fig. 4:
the snapshot recognition system according to the embodiment of the present invention is configured such that one high-definition recognition camera 40 (corresponding to the image capturing device 26 of the above-described embodiment) is installed for each lane or each detection cross section (hereinafter, referred to as a cross section), two or more laser sensors 42 (corresponding to the laser detector 24 of the above-described embodiment) are installed for each detection cross section, one weather detector 44 (corresponding to the weather detector 20 of the above-described embodiment) is installed for each detection cross section, the plurality of laser sensors 42 and one weather detector 44 are connected to the same laser controller 46 (corresponding to the controller 22 of the above-described embodiment), the laser controller 46 is connected to a plurality of high-definition recognition cameras 40 by 485, and the plurality of high-definition recognition cameras 40 are connected to the same industrial personal computer 48 (it should be noted that the laser controller and the industrial personal computer may be integrated into one entity.
The laser controller 46 processes and receives the weather condition detected by the weather detector in real time, and sends a working mode switching signal according to the weather condition (specifically, the working mode (laser sensor trigger mode, laser sensor trigger + video trigger mode, video trigger mode);
the laser controller 46 distinguishes the number of vehicles in the detection area in real time and identifies the positions of the vehicles according to the information frames sent by the laser sensor received in real time in the laser sensor triggering operation mode and the hybrid operation mode, when the vehicle is detected to be just triggering the detection section, the laser controller 46 outputs triggering signals (camera 485 address, laser vehicle ID, triggering time and license plate position) to the corresponding lane camera, after the high-definition recognition camera 40 receives the triggering signals, determines whether the triggering signals are responded by the camera according to the camera 485 address, then matches the corresponding pictures according to the triggering time and the set threshold according to the license plate position, matches the recognized license plate in the figure according to the set threshold, and completes the matching of the camera vehicle ID (corresponding to the identification ID of the camera in the above embodiment) and the laser vehicle ID (corresponding to the identification ID of the laser vehicle in the above embodiment), if the vehicle number is not matched, area recognition is carried out according to the set threshold value according to the vehicle number position, a vehicle tracking starting point is provided for the camera, pre-matching of the camera vehicle ID and the laser vehicle ID is completed, and finally a snapshot picture (at least comprising picture content, the camera vehicle ID, the laser vehicle ID, triggering time and triggering source (laser triggering)) and a recognition result (at least comprising the vehicle number, the vehicle number color, the camera vehicle ID, the laser vehicle ID, the triggering time and the triggering source (laser sensor triggering)) are output to the industrial personal computer 48;
the high-definition recognition camera 40 performs video stream recognition in a hybrid working mode and a video trigger working mode, and performs real-time tracking and recognition on a vehicle license plate in a scene of the camera in the lane, if a trigger signal from a laser sensor is received in the real-time tracking process, matching and recognition output are performed according to a working process triggered by the laser sensor output to the camera, and when the high-definition recognition camera detects that the vehicle reaches a video simulation trigger line, a snapshot (including picture content, camera vehicle ID, laser vehicle ID, trigger time, trigger source (video trigger)) and a recognition result (including license plate number, license plate color, camera vehicle ID, laser vehicle ID, trigger time, trigger source (video trigger)) are output to an industrial personal computer;
the industrial personal computer 48 receives the snapshot picture and the recognition result formed by triggering from the laser sensor and the snapshot picture and the recognition result formed by triggering from the camera video, completes matching between the snapshot picture and the license plate recognition result formed in the same triggering mode according to the laser vehicle ID and the triggering moment and completes matching between the snapshot picture and the license plate recognition result formed in different triggering modes according to the camera vehicle ID and the laser vehicle ID, finally forms a plurality of evidence obtaining records of one vehicle, and can effectively improve all-weather vehicle capture rate, vehicle recognition efficiency and license plate recognition accuracy rate of the system through organic combination of laser sensor triggering and video triggering.
Based on the above general technical concept, the following embodiments also provide detailed technical solutions as follows:
it should be noted that the following reference numerals are not used to limit the execution order of the steps.
Step 1: the laser controller acquires a weather identification result of the weather detector in real time and sends a working mode switching signal according to the weather condition;
the switching signal includes: 485 addresses of cameras, work mode;
the working mode can be divided into a laser sensor trigger mode, a video trigger mode and a mixed trigger mode;
the hybrid trigger mode is a laser sensor trigger mode + a video trigger mode;
step 2: in a laser sensor trigger mode or a hybrid trigger mode, a laser sensor detects a vehicle to acquire first time information, head position information and a laser vehicle ID of the vehicle passing through a detection section;
in a video trigger mode or a mixed trigger mode, a high-definition recognition camera carries out video stream recognition, tracks and recognizes vehicles in a scene of the lane camera in real time, and acquires license plate information, picture information, second time information and camera vehicle IDs;
and step 3: determining a 485 address of a camera needing to be controlled to be captured according to the vehicle head position information, and forming trigger information;
the trigger information includes: a 485 camera address, a laser vehicle ID, a trigger time and a license plate position;
and 4, step 4: according to the 485 address of the camera in the trigger information, the corresponding camera responds to the trigger signal;
and 5: according to the triggering time in the triggering information, the camera matches the corresponding picture according to a set threshold;
step 6: according to the license plate position in the trigger information, the camera matches the license plate recognized in the image according to a set threshold value, and matching of the camera vehicle ID and the laser vehicle ID is completed; if the vehicle ID and the laser vehicle ID are not matched, performing area expansion identification according to the position of the license plate and a set threshold, providing a vehicle tracking identification starting point for the camera, and completing pre-matching of the camera vehicle ID and the laser vehicle ID;
and 7: after the high-definition recognition camera responds to the laser trigger information, the high-definition recognition camera outputs snapshot picture information and license plate recognition information to the industrial personal computer;
the snapshot picture information includes: picture information, camera vehicle ID, laser vehicle ID, trigger time and trigger source;
the license plate identification information includes: license plate information, camera vehicle ID, laser vehicle ID, trigger time and trigger source;
and 8: when the high-definition recognition camera detects that the vehicle reaches a video trigger analog line, the high-definition recognition camera outputs snapshot picture information and license plate recognition information to the industrial personal computer;
the snapshot picture information includes: picture information, camera vehicle ID, laser vehicle ID, trigger time and trigger source;
the license plate identification information includes: license plate information, camera vehicle ID, laser vehicle ID, trigger time and trigger source;
and step 9: the industrial personal computer completes matching between the snapshot picture information formed in the same triggering mode and the license plate recognition result according to the laser vehicle ID and the triggering time as well as the camera vehicle ID and the triggering time to form a snapshot record;
step 10: matching different snapshot records of the same vehicle according to the laser vehicle ID and the camera vehicle ID to form a vehicle evidence obtaining record;
it should be noted that, in the preferred embodiment of the present invention, the number of lanes is not limited, the number of laser sensors is two, but not limited, and the number of video analog trigger lines is one, but not limited.
According to the technical scheme of the embodiment and the preferred embodiment of the invention, three different working modes are formed by utilizing the high capture rate and the positioning accuracy of laser detection under the normal weather condition and combining the video trigger function of the camera video stream, and the optimal working mode is selected according to the weather condition, so that the capture rate, the vehicle identification efficiency and the license plate identification accuracy of the vehicle of the system are improved under all weather conditions.
In addition, the technical scheme of the embodiment and the preferred embodiment of the invention can form three different working modes based on the positioning snapshot triggering function of the laser detection vehicle and the video triggering function of the camera video stream, select the optimal working mode according to the weather condition, accurately find the picture and the license plate recognition result by utilizing the triggering information, finish the binding of the laser identification vehicle and the camera identification vehicle, guide the unidentified picture to carry out locking area secondary recognition, start the tracking recognition of the camera to the vehicle, finish the pre-binding of the laser identification vehicle and the camera identification vehicle, finally form a plurality of evidence obtaining records for one vehicle, and greatly improve the vehicle capture rate, the vehicle recognition efficiency and the license plate recognition accuracy rate of all-weather full-speed sections.
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s1, acquiring environmental weather data in the target area;
and S2, sending a working mode switching signal to an image acquisition device and/or a laser sensor in the target area according to the environmental weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to trigger and capture the vehicle in the target area by adopting a working mode corresponding to the environmental weather data.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A triggering snapshot method of a vehicle, comprising:
acquiring environmental weather data in a target area;
sending a working mode switching signal to an image acquisition device and/or a laser sensor in the target area according to the environmental weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to trigger and snapshot a vehicle in the target area in a working mode corresponding to the environmental weather data;
wherein, the sending of the working mode switching signal to the image acquisition device and/or the laser sensor in the target area according to the environmental weather data comprises: under the condition that the environmental weather data indicate that the target area is in first weather, sending a first working mode switching signal to a laser sensor in the target area according to the environmental weather data so that the laser sensor triggers and captures vehicles in the target area; under the condition that the environmental weather data indicate that the target area is in second weather, sending a second working mode switching signal to an image acquisition device and a laser sensor in the target area according to the environmental weather data so that the image acquisition device and the laser sensor can trigger and capture vehicles in the target area; and under the condition that the environmental weather data indicate that the target area is in a third weather, sending a third working mode switching signal to an image acquisition device in the target area according to the environmental weather data so that the image acquisition device triggers and captures the vehicles in the target area.
2. The method of claim 1, wherein in the case that the environmental weather data indicates that the target area is in a first weather and a vehicle within the target area is triggered to be snapshotted by a laser sensor, or in the case that the environmental weather data indicates that the target area is in a second weather and a vehicle within the target area is triggered to be snapshotted by an image capture device and a laser sensor, the method further comprises:
when the vehicle is detected to trigger a preset detection section, acquiring at least one of the following information of the vehicle passing through the detection section through a laser sensor: the first time information, the vehicle head position information and the identification ID of the laser vehicle.
3. The method of claim 2, wherein if the ambient weather data indicates that the target area is in a second weather and the vehicle within the target area is triggered to be snapshotted by an image capture device and a laser sensor, or if the ambient weather data indicates that the target area is in a third weather and the vehicle within the target area is triggered to be snapshotted by an image capture device, the method further comprises:
when the vehicle is detected to trigger a preset simulation trigger line, acquiring at least one of the following information of the vehicle passing through the detection section through the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle.
4. The method of claim 3, wherein in the event that the environmental weather data indicates that the target area is in a second weather and a triggered snapshot of vehicles within the target area is taken by an image capture device and a laser sensor, the method further comprises:
and matching the first time information and the second time information, and matching the identification ID of the laser vehicle and the identification ID of the camera vehicle to acquire a trigger snapshot record of the same vehicle.
5. A triggered snapshot system of a vehicle, comprising:
the weather detector is used for acquiring environmental weather data in a target area and reporting the environmental weather data to the controller;
the controller is connected with the weather detector and is used for sending a working mode switching signal to the image acquisition device and/or the laser sensor in the target area according to the environmental weather data, wherein the working mode switching signal is used for indicating the image acquisition device and/or the laser sensor to trigger and snapshot the vehicles in the target area in a working mode corresponding to the environmental weather data;
the controller is further configured to send a first working mode switching signal to a laser sensor in the target area according to the environmental weather data under the condition that the environmental weather data indicates that the target area is in first weather, so that the laser sensor triggers and captures a vehicle in the target area; under the condition that the environmental weather data indicate that the target area is in second weather, sending a second working mode switching signal to an image acquisition device and a laser sensor in the target area according to the environmental weather data so that the image acquisition device and the laser sensor can trigger and capture vehicles in the target area; and under the condition that the environmental weather data indicate that the target area is in a third weather, sending a third working mode switching signal to an image acquisition device in the target area according to the environmental weather data so that the image acquisition device triggers and captures the vehicles in the target area.
6. The system of claim 5, further comprising: the laser detector is connected with the controller and used for acquiring at least one of the following information when the vehicle is detected to trigger a preset detection section when the environment weather data indicates that the target area is in a first weather and the vehicle in the target area is triggered to be snapped by the laser sensor or when the environment weather data indicates that the target area is in a second weather and the vehicle in the target area is triggered to be snapped by the image acquisition device and the laser sensor: the first time information, the vehicle head position information and the identification ID of the laser vehicle.
7. The system of claim 6, further comprising: the image acquisition device is connected with the controller and used for acquiring information that the vehicle passes through at least one of the following detection sections when detecting that the vehicle triggers a preset simulation trigger line under the condition that the environmental weather data indicate that the target area is in the second weather and the vehicle in the target area is triggered to be snapped through the image acquisition device and the laser sensor, or the environmental weather data indicate that the target area is in the third weather and the vehicle in the target area is triggered to be snapped through the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle.
8. The system of claim 7, wherein the controller is further configured to receive information transmitted by the laser detector of at least one of the following if the environmental weather data indicates that the target area is in a second weather and a vehicle in the target area is triggered to be snapshotted by the image capture device and the laser sensor: the method comprises the following steps of firstly, obtaining first time information, headstock position information, identification ID of a laser vehicle, and at least one of the following information transmitted by the image acquisition device: license plate information, picture information, second time information and identification ID of the camera vehicle; and matching the first time information and the second time information, and matching the identification ID of the laser vehicle and the identification ID of the camera vehicle to acquire a trigger snapshot record of the same vehicle.
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