CN114283284A - Community vehicle access control method and device - Google Patents
Community vehicle access control method and device Download PDFInfo
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- CN114283284A CN114283284A CN202110941993.2A CN202110941993A CN114283284A CN 114283284 A CN114283284 A CN 114283284A CN 202110941993 A CN202110941993 A CN 202110941993A CN 114283284 A CN114283284 A CN 114283284A
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Abstract
The invention provides a method and a device for controlling entrance guard of vehicles in a residential area, which relate to the technical field of floating population control and comprise the following steps: acquiring license plate image information of a vehicle to be controlled; the vehicle to be controlled is identified by a community access control system; in response to the license plate image information including the region to be segmented, determining the region to be segmented as a suspicious candidate region; cutting the suspicious candidate region into a plurality of blocks with consistent sizes, and determining the segmentation blocks of the suspicious candidate region according to the number of various key color pixels in each block; dividing the suspicious candidate area according to the division blocks to obtain license plate image information respectively corresponding to two license plates in the area to be divided, and obtaining license plate information of the vehicle to be controlled; according to the license plate information, the access authority of the vehicle to be controlled is determined based on the access authority library of the residential area access control system.
Description
Technical Field
The invention relates to the technical field of floating population management and control, in particular to a community vehicle access control method and device.
Background
At present, under intelligent transportation and intelligent community scenes, a vehicle is generally hung on one license plate, and the higher license plate recognition level of the vehicles is achieved. However, there are vehicles that need to hang multiple license plates simultaneously, for example, vehicles entering the interior of hong Kong and Macau are increasing along with the passing of hong Zhu and Macau bridge, and such vehicles have the particularity that two license plates are hung simultaneously on the vehicle body, one is a white-bottom black-character license plate, and the other is a black-bottom white-character Yuez Z hong and Macau license plate.
The license plate positioning of the special vehicles can be influenced by the installation positions of a plurality of license plates by the existing license plate positioning algorithm, two license plates of the special license plates are not easy to be identified, no identification or error identification is easily caused, the license plate identification rate is greatly reduced, and the technical problem in judging whether foreign vehicles have the authority to enter a trolley or not is solved.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for controlling a vehicle entrance guard of a residential area, so as to solve the defect in the prior art that license plate information of an external vehicle driven by a mobile person is not easy to be identified, thereby improving the license plate identification rate and better controlling vehicles entering and exiting the residential area.
Based on the above purpose, the invention provides a community vehicle access control method, which comprises the following steps:
acquiring license plate image information of a vehicle to be controlled; the vehicle to be controlled is identified by a community access control system;
in response to the license plate image information including the region to be segmented, determining the region to be segmented as a suspicious candidate region;
cutting the suspicious candidate region into a plurality of blocks with consistent sizes, and determining the segmentation blocks of the suspicious candidate region according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in key color gamut;
dividing the suspicious candidate area according to the division blocks to obtain license plate image information respectively corresponding to two license plates in the area to be divided, and obtaining license plate information of the vehicle to be controlled;
determining the access authority of the vehicle to be controlled based on an access authority library of a residential area access control system according to the license plate information; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
Optionally, a vehicle-mounted cooperative processing device is installed on the vehicle to be controlled, a roadside device is installed at the community access control system, and direct connection wireless communication is established between the roadside device and the vehicle-mounted cooperative processing device.
Optionally, in response to knowing that the license plate image information includes a region to be segmented, determining the region to be segmented as a suspicious candidate region, specifically including the following steps:
dividing the license plate image information into a plurality of areas;
obtaining the sum of the number of two key color pixels in each region, and calculating the ratio of the key colors in each region, wherein the calculation method of the ratio is formula (1), and the formula (1) is as follows:
in response to the fact that the occupation ratio of the key color in any one region is higher than a preset threshold value, determining the region with the occupation ratio of the key color higher than the preset threshold value as a region to be segmented;
and determining a region with the key color ratio higher than a preset threshold as a suspicious candidate region in response to the license plate image information including the region to be segmented.
Optionally, before dividing the license plate image information into a plurality of regions, the method further includes the following steps:
and screening according to a preset width-height ratio threshold value to obtain regions which can be divided in the license plate image information.
Optionally, in response to knowing that the license plate image information includes a region to be segmented, determining the region to be segmented as a suspicious candidate region, further comprising the following steps:
and in response to the fact that the proportion of the key colors in any one region is not higher than a preset threshold value, determining that the region to be segmented is not included in the license plate image information, and ending the vehicle identification method.
Optionally, the method for dividing the suspicious candidate region into a plurality of blocks with consistent sizes includes:
and forming the suspicious candidate regions into a plurality of blocks with consistent sizes according to the principle of equal width or equal width.
Optionally, determining the partition block of the suspicious candidate region according to the number of the various key color pixels in each block specifically includes the following steps:
acquiring the quantity of two key color pixels of all the blocks before and after each block, wherein the quantity of one key color pixel is a first quantity, and the quantity of the other key color pixel is a second quantity;
and acquiring the difference between the first quantity and the second quantity, and determining the block with the largest difference as the partition block of the suspicious candidate area.
Optionally, the suspicious candidate region is segmented according to the segmentation block, license plate image information corresponding to two license plates in the region to be segmented is obtained, and license plate information of the vehicle to be controlled is obtained, which specifically includes the following steps:
dividing the candidate region by taking the divided block as a boundary position to obtain divided image information after division;
and performing external augmentation and completion on the segmentation image information to obtain license plate image information respectively corresponding to two license plates in the adhesion image, and obtaining two license plates of the vehicle to be controlled.
Optionally, the method further includes the following steps of segmenting the suspicious candidate region according to the segmentation blocks to obtain license plate image information corresponding to two license plates in the adhesion image respectively, and obtaining two license plates of the vehicle to be controlled:
in response to the segmented block being at an edge location of the suspect candidate area, the vehicle identification method terminates.
The invention also provides a district vehicle entrance guard management and control device, which comprises:
the license plate image acquisition module is used for acquiring license plate image information of a vehicle to be controlled; the vehicle to be controlled is identified by a community access control system;
the suspicious region determining module is used for determining the region to be segmented as a suspicious candidate region in response to the license plate image information including the region to be segmented;
the segmentation block determination module is used for cutting the suspicious candidate region into a plurality of blocks with consistent sizes, and determining the segmentation blocks of the suspicious candidate region according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in key color gamut;
the license plate information acquisition module is used for segmenting the suspicious candidate region according to the segmentation blocks, acquiring license plate image information corresponding to two license plates in the region to be segmented respectively, and acquiring license plate information of the vehicle to be controlled;
the access control system comprises an access control authority library, an authority acquisition module and a control module, wherein the access control authority library is used for storing the license plate information of a vehicle to be controlled; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
From the above, according to the method and the device for controlling the entrance guard of the residential vehicle, provided by the invention, because the colors of two license plates of a vehicle with a plurality of license plates hung are different, whether a suspicious candidate area exists in the license plate image information is determined by acquiring the license plate image information of the vehicle to be controlled, namely, whether the two license plates are hung is determined, the suspicious candidate area is subjected to block statistics on pixel differences of two different colors, the cutting position is determined according to the difference value of the color pixels, the adhered license plates in the selected area of the method for controlling the entrance guard of the residential vehicle for the suspicious candidate are subjected to image segmentation, the probability that the license plates cannot be identified by hong Kong and Australia is obviously reduced by the method, the license plate identification rate is improved, and the vehicles entering and leaving the residential area are better controlled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for controlling entrance guard of vehicles in a residential area according to the present invention;
fig. 2 is a first flowchart illustrating a specific step S200 in the method for controlling entrance guard of vehicles in a community according to the present invention;
fig. 3 is a schematic view illustrating a specific flow chart of step S200 in the method for controlling entrance guard of vehicles in a community according to the present invention;
fig. 4 is a schematic flowchart illustrating a specific process of step S300 in the method for controlling entrance guard of vehicles in a community according to the present invention;
fig. 5 is a schematic flowchart illustrating a specific process of step S400 in the method for controlling entrance guard of vehicles in a community according to the present invention;
FIG. 6 is a schematic structural diagram of the entrance guard management and control device for vehicles in a residential area according to the present invention;
fig. 7 is a first schematic structural diagram of a suspicious region acquisition module in the entrance guard management and control device for vehicles in a community;
fig. 8 is a schematic structural diagram of a suspicious region acquisition module in the entrance guard management and control device for vehicles in a community;
fig. 9 is a schematic structural diagram of a specific segmented block acquisition module in the entrance guard management and control device for vehicles in a community;
fig. 10 is a schematic structural diagram of a license plate information acquisition module in the entrance guard management and control device for vehicles in a community;
fig. 11 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It is to be noted that technical terms or scientific terms used in the embodiments of the present invention should have the ordinary meanings as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As a preferred embodiment of the present invention, the present invention provides a method for controlling entrance guard of vehicles in a residential area, including the following steps:
acquiring license plate image information of a vehicle to be controlled; the vehicle to be controlled is identified by a community access control system;
in response to the license plate image information including the region to be segmented, determining the region to be segmented as a suspicious candidate region;
cutting the suspicious candidate region into a plurality of blocks with consistent sizes, and determining the segmentation blocks of the suspicious candidate region according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in key color gamut;
dividing the suspicious candidate area according to the division blocks to obtain license plate image information respectively corresponding to two license plates in the area to be divided, and obtaining license plate information of the vehicle to be controlled;
determining the access authority of the vehicle to be controlled based on an access authority library of a residential area access control system according to the license plate information; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
The invention also provides a district vehicle entrance guard management and control device, which comprises:
the license plate image acquisition module is used for acquiring license plate image information of a vehicle to be controlled; the vehicle to be controlled is identified by a community access control system;
the suspicious region determining module is used for determining the region to be segmented as a suspicious candidate region in response to the license plate image information including the region to be segmented;
the segmentation block determination module is used for cutting the suspicious candidate region into a plurality of blocks with consistent sizes, and determining the segmentation blocks of the suspicious candidate region according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in key color gamut;
the license plate information acquisition module is used for segmenting the suspicious candidate region according to the segmentation blocks, acquiring license plate image information corresponding to two license plates in the region to be segmented respectively, and acquiring license plate information of the vehicle to be controlled;
the access control system comprises an access control authority library, an authority acquisition module and a control module, wherein the access control authority library is used for storing the license plate information of a vehicle to be controlled; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
According to the method and the device for controlling the entrance guard of the vehicles in the residential area, because the colors of two license plates of the vehicles with a plurality of license plates hung are different, the image information of the license plates of the vehicles to be controlled is obtained, whether a suspicious candidate area exists in the image information of the license plates is determined, namely whether the two license plates are hung or not is judged, the pixel difference of two different colors is counted by partitioning the suspicious candidate area, the cutting position is determined according to the difference value of the color pixels, the adhered license plates in the area selected by the method for controlling the entrance guard of the vehicles in the suspicious residential area are subjected to image segmentation, the probability that the license plates cannot be identified in Hongkong and Australia is obviously reduced through the method, the license plate identification rate is improved, and the vehicles entering and leaving the residential area are better controlled.
The following describes preferred embodiments of the method and apparatus for controlling entrance guard of vehicles in a community with reference to the accompanying drawings.
Referring to fig. 1, the method for controlling entrance guard of vehicles in a community includes the following steps:
s100, obtaining license plate image information of a vehicle to be controlled; and the vehicle to be controlled is identified by the community access control system.
In step S100, the license plate image information of the vehicle to be controlled may be acquired by the license plate image acquiring device. The method includes the steps that a license plate photographing image of a vehicle to be identified is obtained, it can be understood that the vehicle to be controlled can be a vehicle with two license plates hung, such as a Hongkong and Australian passing vehicle, and the vehicle has an adhered license plate, the adhering mode of the two license plates can be a parallel layout in the horizontal direction, and can also be a vertical layout in the vertical direction, and the method is not limited in the embodiment of the invention. The license plate image information can be one or more pictures acquired by shooting through a camera, or one or more frames of images selected from a video stream shot by a camera.
S200, in response to the fact that the license plate image information comprises the area to be segmented, determining the area to be segmented as a suspicious candidate area.
In step S200, after obtaining the license plate image information of the other vehicle to be controlled, it may be determined whether the license plate image information includes the region to be segmented by using the rule in the prior art. Therefore, in the community vehicle entrance guard control method, the license plate image information can be divided into a plurality of areas, if one of the image areas comprises the adhered license plate image, the image area can be used as a suspicious candidate area, and image processing is only carried out on the suspicious candidate area subsequently, so that the adhered license plate image can be divided, the whole license plate image information is not required to be processed, and the work efficiency of license plate identification and entrance guard authority control is improved.
S300, the suspicious candidate area is cut into a plurality of blocks with consistent sizes, and the segmentation blocks of the suspicious candidate area are determined according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in a key color gamut. In step S300, the suspicious candidate regions are divided into a plurality of blocks with the same size according to the principle of the same width or the same width.
In step S300, after the suspicious candidate region is obtained, subsequent processing operations are performed on the suspicious candidate region in the license plate image information. Specifically, the suspicious candidate area is firstly divided into a plurality of blocks, and it can be understood that the purpose of dividing the blocks is to find a block which is adjacent to or even matched with the boundary line of two license plates in the adhered license plate image from the plurality of divided blocks, and then divide the license plate image information into two required license plates by using the found block as a boundary line.
S400, the suspicious candidate area is segmented according to the segmentation blocks, license plate image information corresponding to two license plates in the area to be segmented is obtained, and license plate information of the vehicle to be controlled is obtained.
After the required segmentation blocks are obtained in step S300, the suspicious candidate regions can be segmented, and two adhered license plates can be segmented to obtain license plate images and corresponding license plate information corresponding to the two license plates, respectively.
S500, according to the license plate information, determining the access authority of the vehicle to be controlled based on an access authority library of the residential area access control system; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
In step S500, after querying the access right library of the cell access control system, it may be determined whether the license plate information acquired in step S400 is already registered, the entry right of the registered foreign vehicle may enter the cell, and the entry right of the foreign vehicle that is not registered may not enter the cell, and registration and inspection are required.
According to the community vehicle access control method, because the colors of two license plates of a vehicle with multiple license plates hung are different, license plate image information of the vehicle to be controlled is obtained, whether a suspicious candidate area exists in the license plate image information is determined, namely whether the two license plates are hung or not is judged, pixel differences of two different colors are counted in a partitioning mode on the suspicious candidate area, a cutting position is determined according to the difference value of the color pixels, the adhered license plates in the suspicious candidate area are subjected to image segmentation, the probability that the license plates in Hongkong and Australia cannot be identified is obviously reduced through the method, the license plate identification rate is improved, and the vehicle entering and exiting the community is better controlled.
The method comprises the steps that vehicle-mounted cooperative processing equipment, namely an On Board Unit (OBU), is installed on a vehicle to be controlled, road side equipment, namely a road side unit (RSU-roadSideUnit, RSU), is installed at a community access control system, and direct connection wireless communication is established between the road side equipment and the vehicle-mounted cooperative processing equipment.
V2X (vehicle evolution), i.e. the exchange of information from vehicle to outside. The Internet of vehicles establishes a new automobile technology development direction by integrating a Global Positioning System (GPS) navigation technology, an automobile-to-automobile communication technology, a wireless communication technology and a remote sensing technology, and realizes the compatibility of manual driving and automatic driving. In brief, the vehicle model matched with the V2X system can automatically select the driving route with the best road condition through analyzing the real-time traffic information in the automatic driving mode, thereby greatly relieving traffic jam. In addition, by using the vehicle-mounted sensor and the camera system, the surrounding environment can be sensed and rapidly adjusted, so that zero traffic accidents are realized. For example, if a pedestrian suddenly appears, it may be automatically decelerated to a safe speed or stopped.
At present, an existing On Board Unit (OBU) may perform V2N communication with a network facility (e.g., an application server in the Internet or a private transportation network), so as to complete a transportation service between the on board unit and the network facility, such as electronic navigation, travel information prompting, and other services. The vehicle-mounted unit can also perform V2I communication with a Road Side Unit (RSU), so as to complete traffic services between the vehicle-mounted unit and the road side unit, such as electronic toll collection, forward traffic event warning and the like.
By installing the vehicle-mounted unit on the vehicle to be controlled and installing the road side unit (RSU-road side unit, RSU) at the district entrance guard system, the license plate information of the vehicle to be controlled is rapidly acquired, and after the access authority of the vehicle to be controlled is acquired, the driving vehicle and the mobile personnel on the vehicle are rapidly informed.
Referring to fig. 2, step S200 specifically includes the following steps:
s220, dividing the license plate image information into a plurality of areas.
S230, obtaining the sum of the number of the two key color pixels in each area, and calculating the proportion of the key color in each area, wherein the calculation method of the proportion is formula (1), and the formula (1) is as follows:
s240, in response to that the proportion of the key colors in any one region is higher than a preset threshold, determining the region with the proportion of the key colors higher than the preset threshold as a region to be segmented.
And S250, in response to the license plate image information including the region to be segmented, determining the region with the key color ratio higher than a preset threshold value as a suspicious candidate region.
Referring to fig. 3, before step S220, the method further includes the following steps:
s210, screening is carried out according to a preset width-height ratio threshold value, and regions which can be divided in the license plate image information are obtained.
It is understood that step S200 further includes the following steps:
and in response to the fact that the proportion of the key colors in any one region is not higher than a preset threshold value, determining that the region to be segmented is not included in the license plate image information, and ending the vehicle identification method.
Referring to fig. 4, step S300 specifically includes the following steps:
s310, acquiring the corresponding quantity of the two key color pixels of all the blocks before and after each block, wherein the corresponding quantity of one key color pixel is a first quantity, and the corresponding quantity of the other key color pixel is a second quantity.
S320, obtaining the difference value between the first quantity and the second quantity, and determining the block with the largest difference value as the partition block of the suspicious candidate area.
Referring to fig. 5, step S400 specifically includes the following steps:
s410, the candidate regions are divided by using the divided blocks as boundary positions, and divided image information is obtained.
And S420, performing external expansion and completion on the segmentation image information to obtain license plate image information respectively corresponding to two license plates in the adhesion image, and obtaining two license plates of the vehicle to be controlled.
S430, in response to the segmentation block being in the edge position of the suspicious candidate area, the vehicle identification method is terminated.
The following describes the access control device for the vehicles in the residential area, and the access control device for the vehicles in the residential area described below and the access control method for the vehicles in the residential area described above can be referred to correspondingly.
Referring to fig. 6, the entrance guard management and control device for vehicles in a community includes:
the license plate image acquisition module 100 is used for acquiring license plate image information of a vehicle to be controlled; and the vehicle to be controlled is identified by the community access control system.
In the license plate image obtaining module 100, the license plate image information of the vehicle to be controlled may be collected by a license plate image obtaining device. The method includes the steps that a license plate photographing image of a vehicle to be identified is obtained, it can be understood that the vehicle to be controlled can be a vehicle with two license plates hung, such as a Hongkong and Australian passing vehicle, and the vehicle has an adhered license plate, the adhering mode of the two license plates can be a parallel layout in the horizontal direction, and can also be a vertical layout in the vertical direction, and the method is not limited in the embodiment of the invention. The license plate image information can be one or more pictures acquired by shooting through a camera, or one or more frames of images selected from a video stream shot by a camera.
The suspicious region acquiring module 200 is configured to determine, in response to that the license plate image information includes a region to be segmented, the region to be segmented as a suspicious candidate region.
In the suspicious region acquiring module 200, after acquiring the license plate image information of the other vehicle to be controlled, it may be determined whether the license plate image information includes the region to be segmented by using the rules in the prior art. Therefore, in the community vehicle entrance guard control device, the license plate image information can be divided into a plurality of areas, if one of the image areas comprises the adhered license plate image, the image area can be used as a suspicious candidate area, and image processing can be carried out only on the suspicious candidate area subsequently, so that the adhered license plate image can be divided, the whole license plate image information is not required to be processed, and the work efficiency of license plate identification and entrance guard authority control is improved.
The segmentation block obtaining module 300 is configured to segment the suspicious candidate region into a plurality of blocks with consistent sizes, and determine the segmentation blocks of the suspicious candidate region according to the number of various key color pixels in each block, where each block includes two key colors, each key color corresponds to one license plate, and a key color pixel is a pixel in a key color gamut. In step S300, the suspicious candidate regions are divided into a plurality of blocks with the same size according to the principle of the same width or the same width.
In the segmented block acquiring module 300, after the suspicious candidate region is acquired, subsequent processing operations are performed on the suspicious candidate region in the license plate image information. Specifically, the suspicious candidate area is firstly divided into a plurality of blocks, and it can be understood that the purpose of dividing the blocks is to find a block which is adjacent to or even matched with the boundary line of two license plates in the adhered license plate image from the plurality of divided blocks, and then divide the license plate image information into two required license plates by using the found block as a boundary line.
The license plate information obtaining module 400 is configured to segment the suspicious candidate region according to the segmentation blocks, obtain license plate image information corresponding to two license plates in the region to be segmented, and obtain license plate information of the vehicle to be controlled.
After the required segmentation block is obtained by the segmentation block obtaining module 300, the suspicious candidate region can be segmented, two adhered license plates can be segmented, and license plate images and corresponding license plate information corresponding to the two license plates are obtained respectively.
The authority acquisition module 500 is used for determining the access authority of the vehicle to be controlled based on an access authority library of the residential area access control system according to the license plate information; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
In the permission obtaining module 500, after querying an access permission library of the cell access control system, it may be determined whether the license plate information obtained in step S400 is already registered, the entry permission of the registered foreign vehicle is that the foreign vehicle can enter the cell, and the entry permission of the non-registered foreign vehicle is that the foreign vehicle cannot enter the cell, and registration and inspection are required.
According to the community vehicle access control device, the colors of two license plates of a vehicle with a plurality of license plates hung are different, whether the two license plates are hung or not is judged through the license plate image acquisition module 100 and the suspicious region acquisition module 200, the image segmentation is carried out on the adhesion license plates in the suspicious candidate region through the segmentation block acquisition module 300 and the license plate information acquisition module 400, the probability that the license plates in Hongkong and Macau cannot be identified is obviously reduced through the method, the license plate identification rate is improved, and the vehicles entering and exiting the community are better controlled.
The method comprises the steps that vehicle-mounted cooperative processing equipment, namely an On Board Unit (OBU), is installed on a vehicle to be controlled, road side equipment, namely a road side unit (RSU-roadSideUnit, RSU), is installed at a community access control system, and direct connection wireless communication is established between the road side equipment and the vehicle-mounted cooperative processing equipment.
V2X (vehicle evolution), i.e. the exchange of information from vehicle to outside. The Internet of vehicles establishes a new automobile technology development direction by integrating a Global Positioning System (GPS) navigation technology, an automobile-to-automobile communication technology, a wireless communication technology and a remote sensing technology, and realizes the compatibility of manual driving and automatic driving. In brief, the vehicle model matched with the V2X system can automatically select the driving route with the best road condition through analyzing the real-time traffic information in the automatic driving mode, thereby greatly relieving traffic jam. In addition, by using the vehicle-mounted sensor and the camera system, the surrounding environment can be sensed and rapidly adjusted, so that zero traffic accidents are realized. For example, if a pedestrian suddenly appears, it may be automatically decelerated to a safe speed or stopped.
At present, an existing On Board Unit (OBU) may perform V2N communication with a network facility (e.g., an application server in the Internet or a private transportation network), so as to complete a transportation service between the on board unit and the network facility, such as electronic navigation, travel information prompting, and other services. The vehicle-mounted unit can also perform V2I communication with a Road Side Unit (RSU), so as to complete traffic services between the vehicle-mounted unit and the road side unit, such as electronic toll collection, forward traffic event warning and the like.
By installing the vehicle-mounted unit on the vehicle to be controlled and installing the road side unit (RSU-road side unit, RSU) at the district entrance guard system, the license plate information of the vehicle to be controlled is rapidly acquired, and after the access authority of the vehicle to be controlled is acquired, the driving vehicle and the mobile personnel on the vehicle are rapidly informed.
Referring to fig. 7, the suspicious region acquiring module 200 specifically includes:
the dividing unit 220 is configured to divide the license plate image information into a plurality of regions.
A calculating unit 230, configured to obtain a sum of the number of two types of key color pixels in each region, and calculate an occupation ratio of the key color in each block region, where a calculating device of the occupation ratio is formula (1), and the formula (1) is:
a first determining unit 240, configured to determine, as the region to be segmented, a region in which the occupation ratio of the key color is higher than a preset threshold in response to that the occupation ratio of the key color in any one region is higher than the preset threshold.
And a second determining unit 250, configured to determine, in response to that the license plate image information includes a region to be segmented, a region in which the proportion of the key color is higher than a preset threshold as a suspicious candidate region.
Referring to fig. 8, the suspicious region acquiring module 200 further includes:
the screening unit 210 is configured to perform screening according to a preset width-to-height ratio threshold value to obtain a region that can be divided in the license plate image information.
It is understood that the dividing unit 220 further includes:
and in response to the fact that the proportion of the key colors in any one region is not higher than a preset threshold value, determining that the region to be segmented is not included in the license plate image information, and terminating the vehicle identification device.
Referring to fig. 9, the license plate information acquiring module 300 specifically includes:
the color obtaining unit 310 is configured to obtain the respective corresponding numbers of two key color pixels of all the blocks before and after each block, where the corresponding number of one key color pixel is a first number, and the corresponding number of another key color pixel is a second number.
A third determining unit 320, configured to obtain a difference between the first number and the second number, and determine the block with the largest difference as the partition block of the suspicious candidate region.
Referring to fig. 10, the license plate information acquiring module 400 specifically includes:
the dividing unit 410 is configured to divide the candidate region by using the divided block as a boundary position, and obtain divided image information after the division.
And the complementing unit 420 is configured to perform external augmentation complementing on the segmented image information to obtain license plate image information corresponding to two license plates in the adhesion image, and obtain two license plates of the vehicle to be controlled.
A termination unit 430, configured to, in response to the segmented block being at an edge position of the suspected candidate area, terminate the vehicle identification apparatus.
Fig. 11 illustrates a physical structure diagram of an electronic device, and as shown in fig. 11, the electronic device may include: a processor (processor)810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute a method for controlling entrance of vehicles in a community, where the method includes the following steps:
s100, obtaining license plate image information of a vehicle to be controlled; the method comprises the following steps that a vehicle to be controlled is identified by a community access control system;
s200, in response to the fact that the license plate image information comprises the area to be segmented, determining the area to be segmented as a suspicious candidate area;
s300, cutting the suspicious candidate area into a plurality of blocks with consistent sizes, and determining the segmented blocks of the suspicious candidate area according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in a key color gamut;
s400, segmenting the suspicious candidate region according to the segmentation blocks to obtain license plate image information respectively corresponding to two license plates in the region to be segmented to obtain license plate information of the vehicle to be controlled;
s500, according to the license plate information, determining the access authority of the vehicle to be controlled based on an access authority library of the residential area access control system; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
In addition, the logic instructions in the memory 830 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer being capable of executing the method for controlling entrance of a vehicle into a cell provided by the above methods, the method for controlling entrance of a vehicle into a cell including the steps of:
s100, obtaining license plate image information of a vehicle to be controlled; the method comprises the following steps that a vehicle to be controlled is identified by a community access control system;
s200, in response to the fact that the license plate image information comprises the area to be segmented, determining the area to be segmented as a suspicious candidate area;
s300, cutting the suspicious candidate area into a plurality of blocks with consistent sizes, and determining the segmented blocks of the suspicious candidate area according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in a key color gamut;
s400, segmenting the suspicious candidate region according to the segmentation blocks to obtain license plate image information respectively corresponding to two license plates in the region to be segmented to obtain license plate information of the vehicle to be controlled;
s500, according to the license plate information, determining the access authority of the vehicle to be controlled based on an access authority library of the residential area access control system; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the above-mentioned methods for controlling entrance of a vehicle to a residential area, the method comprising:
s100, obtaining license plate image information of a vehicle to be controlled; the method comprises the following steps that a vehicle to be controlled is identified by a community access control system;
s200, in response to the fact that the license plate image information comprises the area to be segmented, determining the area to be segmented as a suspicious candidate area;
s300, cutting the suspicious candidate area into a plurality of blocks with consistent sizes, and determining the segmented blocks of the suspicious candidate area according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in a key color gamut;
s400, segmenting the suspicious candidate region according to the segmentation blocks to obtain license plate image information respectively corresponding to two license plates in the region to be segmented to obtain license plate information of the vehicle to be controlled;
s500, according to the license plate information, determining the access authority of the vehicle to be controlled based on an access authority library of the residential area access control system; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A residential vehicle access control method is characterized by comprising the following steps:
acquiring license plate image information of a vehicle to be controlled; the vehicle to be controlled is identified by a community access control system;
in response to the license plate image information including the region to be segmented, determining the region to be segmented as a suspicious candidate region;
cutting the suspicious candidate region into a plurality of blocks with consistent sizes, and determining the segmentation blocks of the suspicious candidate region according to the number of various key color pixels in each block, wherein each block comprises two key colors, each key color corresponds to a license plate, and the key color pixels are pixels in key color gamut;
dividing the suspicious candidate area according to the division blocks to obtain license plate image information respectively corresponding to two license plates in the area to be divided, and obtaining license plate information of the vehicle to be controlled;
determining the access authority of the vehicle to be controlled based on an access authority library of a residential area access control system according to the license plate information; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
2. The method for managing and controlling the entrance guard of the residential vehicle according to claim 1, wherein the vehicle to be managed is provided with vehicle-mounted cooperative processing equipment, the residential access control system is provided with road side equipment, and direct connection wireless communication is established between the road side equipment and the vehicle-mounted cooperative processing equipment.
3. The method according to claim 1, wherein the step of determining the area to be segmented as the suspicious candidate area is performed in response to the fact that the license plate image information includes the area to be segmented, specifically comprises the steps of:
dividing the license plate image information into a plurality of areas;
obtaining the sum of the number of two key color pixels in each region, and calculating the ratio of the key colors in each region, wherein the calculation method of the ratio is formula (1), and the formula (1) is as follows:
in response to the fact that the occupation ratio of the key color in any one region is higher than a preset threshold value, determining the region with the occupation ratio of the key color higher than the preset threshold value as a region to be segmented;
and determining a region with the key color ratio higher than a preset threshold as a suspicious candidate region in response to the license plate image information including the region to be segmented.
4. The residential vehicle access control method according to claim 3, wherein before dividing the license plate image information into a plurality of regions, the method further comprises the following steps:
and screening according to a preset width-height ratio threshold value to obtain regions which can be divided in the license plate image information.
5. The method for managing and controlling entrance guard of vehicles in residential areas according to claim 4, wherein in response to the fact that the license plate image information includes the area to be segmented, the area to be segmented is determined as a suspicious candidate area, and the method further comprises the following steps:
and in response to the fact that the proportion of the key colors in any one region is not higher than a preset threshold value, determining that the region to be segmented is not included in the license plate image information, and ending the vehicle identification method.
6. The method according to claim 5, wherein the suspicious candidate area is cut into a plurality of blocks with consistent size, specifically:
the candidate areas are equally divided into a plurality of blocks of uniform size.
7. The method according to claim 6, wherein the step of determining the partition blocks of the suspicious candidate region according to the number of the key color pixels in each block comprises the following steps:
acquiring the quantity of two key color pixels of all the blocks before and after each block, wherein the quantity of one key color pixel is a first quantity, and the quantity of the other key color pixel is a second quantity;
and acquiring the difference between the first quantity and the second quantity, and determining the block with the largest difference as the partition block of the suspicious candidate area.
8. The residential vehicle access control method according to claim 7, wherein the suspicious candidate region is segmented according to the segmentation blocks to obtain license plate image information corresponding to two license plates in the region to be segmented, so as to obtain license plate information of the vehicle to be controlled, and the method specifically comprises the following steps:
dividing the candidate region by taking the divided block as a boundary position to obtain divided image information after division;
and performing external augmentation and completion on the segmentation image information to obtain license plate image information respectively corresponding to two license plates in the adhesion image, and obtaining two license plates of the vehicle to be controlled.
9. The residential vehicle access control method according to claim 8, wherein the suspicious candidate area is segmented according to the segmentation blocks to obtain license plate image information corresponding to two license plates in the adhesion image, so as to obtain two license plates of the vehicle to be controlled, and the method further comprises the following steps:
in response to the segmented block being at an edge location of the suspect candidate area, the vehicle identification method terminates.
10. The utility model provides a district vehicle entrance guard management and control device which characterized in that includes:
the license plate image acquisition module (100) is used for acquiring license plate image information of a vehicle to be controlled; the vehicle to be controlled is identified by a community access control system;
the suspicious region determining module (200) is used for determining the region to be segmented as a suspicious candidate region in response to the license plate image information including the region to be segmented;
a partition block determination module (300) configured to cut the suspicious candidate region into a plurality of blocks with the same size, and determine a partition block of the suspicious candidate region according to the number of various key color pixels in each of the blocks, where each block includes two key colors, each key color corresponds to one license plate, and the key color pixels are pixels in a key color gamut;
the license plate information acquisition module (400) is used for segmenting the suspicious candidate region according to the segmentation blocks, acquiring license plate image information corresponding to two license plates in the region to be segmented respectively, and acquiring license plate information of the vehicle to be controlled;
the access control system comprises an access control module (500) for determining the access authority of the vehicle to be controlled based on an access control authority library of the residential area access control system according to the license plate information; the entrance guard permission library comprises a plurality of license plate information which can be judged to enter a community.
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| CN202110941993.2A CN114283284A (en) | 2021-08-17 | 2021-08-17 | Community vehicle access control method and device |
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| CN202110941993.2A CN114283284A (en) | 2021-08-17 | 2021-08-17 | Community vehicle access control method and device |
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