KR102075318B1 - Information gathering system using vehicle and information gathering method using vehicle - Google Patents

Abstract

Provided are an information collection system using a vehicle which remarkably reduces an amount of data to be transmitted, and an information collection method using the vehicle. According to one embodiment of the present invention, the information collection system using the vehicle comprises a vehicle terminal installed in the vehicle and a server connected to the vehicle terminal. The vehicle terminal comprises: a photographing unit acquiring an image around the vehicle; a control unit extracting text information from the image; a conversion unit hashing the text information; and a filtering unit filtering the hashed text information. The server comprises a bloom filter generation unit and a database unit storing target information. The bloom filter generation unit generates at least one bloom filter based on the target information and provides the same to the vehicle terminal. The filtering unit filters the hashed text information by using the bloom filter.

Description

Information gathering system using vehicle and information gathering method using vehicle {INFORMATION GATHERING SYSTEM USING VEHICLE AND INFORMATION GATHERING METHOD USING VEHICLE}

The present invention relates to an information collection system using a vehicle and an information collection method using a vehicle.

There are many vehicles on the road, and the drivers who drive the vehicles drive on their promises. However, unexpected situations can always occur on the road. For example, when an accident occurs and disrupts traffic in a specific area, or when a vehicle is operated in violation of a rule, other drivers are damaged.

In order to reduce the latter, people can be educated not to violate the rules in advance, or the system can be reorganized. In addition, it can be considered to minimize the damage to the rule violation by efficiently conducting the enforcement of the rule violation. However, statistically, the number of violations or the size of the rules is relatively large compared to the capacity for enforcement. In this situation, a variety of techniques are used to compensate for the lack of enforcement capabilities. For example, the crackdown using CCTV, the crackdown using a speed measuring device, and the like. However, these technologies also have limitations in drastically improving the enforcement capability, and therefore, there is a need for a technology that can effectively improve the enforcement capability by collecting information in a wide range of regions.

The problem to be solved by the present invention is to provide an information collection system that significantly reduces the data capacity to be transmitted.

The problem to be solved by the present invention is to provide an information collection system for providing information required for various control and regulation by using a moving vehicle.

Another problem to be solved by the present invention is to provide an information collection method that significantly reduces the data capacity to be transmitted.

Another object of the present invention is to provide an information collection method for providing information necessary for various control and regulation using a moving vehicle.

The objects of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

An information collection system using a vehicle according to an embodiment of the present invention for solving the above problems is an information collection system including a vehicle terminal installed in a vehicle and a server connected to the vehicle terminal, wherein the vehicle terminal is located near the vehicle. An image photographing unit obtaining an image, a control unit extracting text information from the image, a converting unit hashing the text information, and a filtering unit filtering the hashed text information, wherein the server includes a bloom filter generator; And a database unit configured to store target information, wherein the bloom filter generator generates at least one bloom filter based on the target information, and provides the at least one bloom filter to the vehicle terminal. Filter textual information.

The controller may provide the server with the text information determined to be positive by the filtering unit.

The server may further include a server controller for comparing the provided text information with target information stored in the database unit.

The apparatus may further include a position measuring unit measuring position information of the vehicle, and the converting unit may hash the position information.

The target information includes a target information list and target location information, and the bloom filter generator generates a first bloom filter based on the target information list, and generates a second bloom filter based on the target location information. ,

The first bloom filter and the second bloom filter are provided to the vehicle terminal, and the filtering unit filters the hashed text information using the first bloom filter and the hashed text using the second bloom filter. Location information can be filtered.

The information collection method using a vehicle according to an embodiment of the present invention for solving the above problems is an information collection method that is operated by a vehicle terminal installed in a vehicle and a server connected to the vehicle terminal, by taking an image to capture an image Obtaining, extracting text information from the image, hashing the text information, receiving at least one bloom filter from the server, and filtering the hashed text information using the bloom filter. step; And providing the filtered text information to a server.

The target information includes a target information list and target location information, and the bloom filter generator generates a first bloom filter based on the target information list, and generates a second bloom filter based on the target location information. And the first bloom filter and the second bloom filter are provided to the vehicle terminal, and the filtering unit filters the hashed text information by using the first bloom filter, and the hash by using the second bloom filter. The filtered location information can be filtered.

The information collection method using a vehicle according to an embodiment of the present invention for solving the above problems is an information collection method that is operated by a vehicle terminal installed in a vehicle and a server connected to the vehicle terminal, by taking an image to capture an image Obtaining, extracting text information from the image, hashing the text information, receiving at least one bloom filter from the server, and filtering the hashed text information using the bloom filter. And providing the filtered text information to a server.

The server may further include storing target information and generating, by the server, a bloom filter based on the target information.

The method may further include obtaining location information of the vehicle and hashing the location information.

In addition, the bloom filter includes a first bloom filter and a second bloom filter,

The first bloom filter may further include filtering the hashed text information and the second bloom filter filtering the hashed location information.

The information collection method using a vehicle according to an embodiment of the present invention for solving the above problems is an information collection method that is operated by a vehicle terminal installed in a vehicle and a server connected to the vehicle terminal, collecting the position information of the vehicle Obtaining an image connected with the location information, hashing the location information, receiving at least one bloom filter from the server, and filtering the hashed location information using the bloom filter. And providing the filtered location information and an image connected with the location information to a server.

The server may further include storing target information and generating, by the server, a bloom filter based on the target information.

The server may generate the bloom filter based on the target information.

The providing of the filtered location information and the image connected to the location information to the server may provide the location information determined to be positive by the bloom filter and the image information connected to the location information.

Means for solving the problems are not limited thereto, and more specific means are described in more detail in the specification.

According to embodiments of the present invention, it is possible to provide an information collection system and an information collection method which significantly reduce the amount of data to be transmitted.

In addition, by using a moving vehicle, it is possible to provide the relevant organizations with information necessary for various control and regulation.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a schematic diagram of an information collection system according to an embodiment of the present invention.
2 is a block diagram illustrating an information collection system using a vehicle according to an embodiment of the present invention.
3 is a flowchart illustrating an information collection method using a vehicle according to an embodiment of the present invention.
4 is a flow chart of an information collection method according to another embodiment of the present invention.
5 is a flowchart of an information collecting method according to another embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

When elements or layers are referred to as "on" or "on" of another element or layer, intervening other layers or other configurations in the middle as well as on top of other components or layers. It includes everything. On the other hand, when a configuration is referred to as "directly on" or "directly on" indicates that there is no intervening configuration or layer in between.

The spatially relative terms "below", "beneath", "lower", "above", "on", "on", "top" upper) "and the like may be used to easily describe the correlation of one component or components with another component or components, as shown in the figure. Spatially relative terms are to be understood as including terms that differ in the configuration in use or operation in addition to the directions shown in the figures. For example, when the configuration shown in the figure is reversed, a configuration described as "below" of another configuration may be placed "above" of another configuration. Also, a configuration described as being located at the "left side" of another configuration based on the drawings may be located at the "right side" of another configuration depending on the viewpoint. Thus, the exemplary term "below" can encompass both an orientation of above and below. Configurations can also be oriented in other directions, in which case spatially relative terms can be interpreted according to orientation.

Although the first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be the second component within the technical spirit of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In addition, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described on the specification, one or more other features or numbers, It does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

The same reference numerals are used for the same or similar parts throughout the specification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a schematic diagram of an information collection system according to an embodiment of the present invention.

2 is a block diagram illustrating an information collection system using a vehicle according to an embodiment of the present invention.

1 and 2, an information collection system using a vehicle according to an embodiment may include at least one vehicle terminal 1000 and a server 2000.

First, the vehicle terminal 1000 will be described.

The vehicle terminal 1000 is a terminal installed in a vehicle and includes an electronic device for performing a predetermined function. In addition, the vehicle terminal 1000 is not limited to the installation position in the vehicle. In addition, in the present specification, the vehicle terminal 1000 may generally be understood as a broad concept including a navigation or a black box installed in a vehicle.

In an exemplary embodiment, the vehicle terminal 1000 may include a control unit 500, an image photographing unit 100, a communication unit 400, a memory unit 600, a position measuring unit 300, a converting unit 700, and a filtering unit 200. ) May be included.

The controller 500 may collectively manage the information collection system and method according to some embodiments of the present invention. To this end, the controller 500 may receive a signal for driving from each component or provide a signal for driving each component.

In order to perform such a function, the control unit 500 may be entirely hardware or partly hardware and partly software. That is, the controller may be understood as a concept of collectively a device for transmitting and receiving data of a specific format and content in an electronic communication method and software related thereto.

For example, the hardware may include a data processing device that includes a CPU or other processor.

In addition, the software may include an object, an executable file, a thread of execution, a program, and the like.

That is, the control unit 500 may be involved in driving each component made through the exchange of signals. Specific functions of the controller 500 will be described later in connection with the description of other components.

The communication unit 400 may be disposed to assist the control unit 500 described above.

The communication unit 400 may connect the control unit 500, each component or control unit 500 to be described later, an external server, a data processing device, or a mobile device by wireless and / or wired.

In addition, the communication unit 400 may provide a wired and / or wireless connection between each component and each component.

As a means for achieving this, the communication unit 400 may include a wired communication module for supporting wired communication and / or a wireless communication module for supporting wireless communication.

For example, the wired communication module may include other servers, base stations, and APs in a wired communication network constructed according to technical standards or wired communication methods (Ehternet, PLC (Power Line Communication), home PNA, IEEE 1394, etc.) for wired communication. and a communication interface for transmitting and receiving a wired signal with at least one of the access points.

The wireless communication module may include technical standards or communication schemes for wireless communication (eg, wireless LAN (WLAN), wireless-fidelity (Wi-Fi), digital living network alliance (DLNA), and global system for mobile communication). ), A base station, an access point (AP) and a repeater in a wireless communication network constructed according to Code Division MultiAccess (CDMA), Wideband CDMA (WCDMA), Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), etc. It may include a communication interface for transmitting and receiving wireless signals with at least one of. However, this is merely an example, and the configuration of the communication unit 400 is not limited thereto. That is, if it is a means for enabling data transmission and reception, it may be adopted as the communication unit 400.

In one embodiment, the memory unit 600 may include an internal memory. More specifically, the memory unit 600 is a volatile memory (for example, dynamic RAM (DRAM), static RAM (SRAM), synchronous dynamic RAM (SDRAM), etc.) or non-volatile memory (for example, , One time programmable ROM (OTPROM), programmable ROM (PROM), erasable and programmable ROM (EPROM), electrically erasable and programmable ROM (EPEROM), mask ROM, flash ROM, NAND flash memory, NOR flash memory, etc. Solid State Drive).

Meanwhile, the memory unit 600 may include an external memory in one embodiment. More specifically, the memory unit 600 may include a flash drive, for example, a compact flash (CF), a secure digital (SD), a micro secure digital (Micro-SD), a mini secure digital (Mini-SD), and an xD (extreme). digital) or Memory Stick.

The memory unit 600 may store information based on the determination of the controller 500. The information stored by the memory unit 600 may be pre-input information or information provided from the server 2000 or the external organization 3000 using the communication unit 400.

The image capturing unit 100 may acquire an external image. To this end, the image capturing unit 100 may include at least one selected from a camera, a stereo camera, a mono camera, a wide angle camera, or a 3D vision sensor. However, this is only an example, and the image capturing unit 100 is not limited thereto, and may be used as the image capturing unit 100 of the present specification as long as it is a means for obtaining data in the form of an image.

In an embodiment, the image capturing unit 100 may acquire an image of a surrounding vehicle. For example, the image capturing unit 100 may recognize a vehicle running adjacent to the vehicle. Specifically, the unique number of the surrounding vehicle, that is, the license plate may be recognized. The image capturing unit 100 may recognize a plurality of license plates according to the viewing angle of the camera continuously or sequentially.

According to an embodiment, the controller 500 may extract text information from an image acquired by the image capturing unit 100. This is because the controller 500 has a relatively small capacity of the text information from the image compared to the character recognition program or the image. Therefore, when the text information is separated and transmitted, the controller 500 can reduce the amount of data transmission. However, the present invention is not limited thereto, and the controller 500 may extract an image and text information extracted from the corresponding image, and may bundle the two and store the two in the bundle in the memory unit 600. As described later, the text information is filtered by the bloom filter, and as a result, the storage capacity can be reduced by storing only image information corresponding to the text information passing through the bloom filter.

The location measuring unit 300 may measure the location of the vehicle terminal 1000, that is, the current location of the vehicle in which the vehicle terminal 1000 is installed.

To this end, the position measuring unit 300 may include a position measuring means. The position measuring means may include, for example, any one or more selected from the group consisting of a GPS module, an IMU module, and a barometer module capable of receiving a position signal from at least one GPS satellite. However, this is merely an example, and the position measuring unit 300 is not limited thereto. If it is a means for confirming the position of the vehicle terminal 1000, it may be adopted as the position measuring unit 300 of the information collection system according to an embodiment of the present invention.

In order to display the location measured by the location measuring unit 300, the information collection system according to an embodiment of the present invention may include map data including geographical information of the whole country. In addition, the map data may be implemented in an electronic map, a program including the electronic map, or a navigation format.

When the map data includes a program, the program may be executed by the controller 500. In addition, the map data may be stored in the memory unit 600.

The converter 700 may hash the text information extracted from the image information and / or image information acquired by the image capturing unit 100. That is, the text information extracted from the image information and / or image information may be hashed to be filtered using the bloom filter 210 included in the filtering unit 200 to be described later. In addition, the hashed image information and / or text information extracted from the image information may use the same function as the function used to generate the bloom filter in the bloom filter generator 870 to be described later.

In one embodiment, the conversion unit 700 may be hardware and / or software unique to the control unit 500. In addition, the converter 700 may be partially hardware, or partially software.

In another embodiment, the converter 700 is included in the controller 500, and may be a program executed by the controller 500 or some algorithm included in the program.

Image information and / or text information hashed by the converter 700 may be filtered by the filter 200. To this end, the filtering unit 200 may include at least one bloom filter 210. The bloom filter 210 may be hardware and / or software unique to the controller 500. In addition, the bloom filter 210 may be partly hardware and partly software.

In another embodiment, the bloom filter 210 may be a program executed by the controller 500 or some algorithm included in the program.

In one embodiment, the bloom filter 210 may be provided from the server 2000. In detail, the bloom filter generator 870 of the server 2000 may generate a hash index for a specific set of elements by using a hash function and generate the bloom filter 210 based on the hash index.

In an embodiment, the bloom filter 210 generated by the bloom filter generator 870 may be stored in the memory unit 600 through the communicator 400. In addition, the bloom filter 210 stored in the memory unit 600 may be executed by the control unit 500 to function as the filtering unit 200.

In an embodiment in which the filtering unit 200 and the control unit 500 are separated in terms of hardware, the bloom filter 210 may be stored in an independent storage space of the filtering unit 200 and executed by an independent process.

The processor and storage space of a terminal installed in a vehicle lack computing resources compared to that of a server. Accordingly, the execution of the bloom filter 210 is performed in the vehicle terminal, and the generation of the bloom filter 210 is performed in the server, that is, when the generation of the bloom filter 210 and the subject of utilization are separated, the vehicle terminal is insufficient. Computing resources can be saved.

In an embodiment, the server 2000 may include a server controller 850, a database unit 860, and a bloom filter generator 870.

The server 2000 is a physical or conceptual collection including computing resources, and the term "server" may be interpreted most widely within the meaning of the term.

The server controller 850 may collectively control the server 2000 and sub-components of the server 2000. That is, in the plurality of components included in the server 2000 and the server 2000, the server controller 850 may be driven according to a control signal. To this end, the server controller 850 may be connected to all components of the server 2000 by wire and / or wirelessly.

In the present specification, 'connection' may be understood to include all relationships in which data transmission between the two is possible.

In order to perform such a function, the server controller 850 may be entirely hardware or partly hardware and partly software. That is, the controller may be understood as a concept of collectively a device for transmitting and receiving data of a specific format and content in an electronic communication method and software related thereto.

For example, the hardware may include a data processing device that includes a CPU or other processor.

In addition, the software may include an object, an executable file, a thread of execution, a program, and the like.

The database unit 860 may store a program driven by the server controller 850 or information necessary for the determination of the server controller 850. To this end, the database unit 860 may include at least one internal memory and / or an external memory. The internal memory and / or external memory may be substantially the same as described above in the memory unit.

The server 2000 may be connected to the external organization 3000 in a wired and / or wireless manner. To this end, the server 2000 and the external organization 3000 may further include a communication means for communication with each other. The communication means included in the server 2000 and the external organization 3000 may be substantially the same as the communication unit 400 described above in the vehicle terminal. Therefore, detailed description thereof will be omitted.

The external organization 3000 may be a public institution or a company or a subject who needs collected information. The external organization 3000 may require the collection of specific information for policy purposes or enforcement.

For example, the external organization 3000 may provide the server 2000 with license plate information (eg, wanted license plates, obsolete diesel vehicle license plates, etc.) that need to be collected.

The server 2000 may store the license plate information provided from the external organization 3000 in the database unit 860.

The bloom filter generator 870 of the server 2000 may generate the bloom filter 210 based on the license plate information.

The bloom filter generator 870 may be hardware and / or software unique to the server controller 850. In addition, the bloom filter generator 870 may be partially hardware and partially software.

In another embodiment, the bloom filter generator 870 may be included in the server controller 850 and may be a program executed by the server controller 850 or some algorithm included in the program.

The bloom filter generator 870 may initialize all bits of the bloom filter 210 to 0 to generate the bloom filter 210. Next, the bloom filter generator 870 may determine a hash index based on an element belonging to the set (eg, a target information list, target location information, etc. provided from the external organization 3000).

That is, the k hash functions are used to hash the target information list or the target position information provided from the external organization 3000, and based on this, some bit-vector values of the hash index of the bloom filter 210 are 1; Can be changed to

The bloom filter 210 generated here may be provided to the vehicle terminal 1000 as described above.

When the vehicle terminal 1000 selects only data that needs to be collected using the bloom filter 210 generated by the bloom filter generator 870, the amount of data transmission between the vehicle terminal 1000 and the server 2000 is greatly reduced. Therefore, the transmission speed and the information processing speed can be greatly improved. In addition, the storage space of the memory unit 600 or the server 2000 database unit 860 of the vehicle terminal 1000 may be saved.

Hereinafter, a method of collecting information by the information collection system according to an embodiment of the present invention will be described.

3 is a flowchart illustrating an information collection method using a vehicle according to an embodiment of the present invention.

The information collecting method according to an embodiment of the present invention may be performed by the information collecting system according to some embodiments of the present invention. However, this is merely an example and the method is not limited by the means.

Referring to FIG. 3, in the information collecting method according to an embodiment, the method may include capturing an image (S101), extracting text information from the photographed image (S102), and hashing the extracted text information (S103). A step of receiving a bloom filter from the server (S202), a step of filtering text information using the bloom filter (S104) and a step of providing the filtered text information to the server (S105).

First, an operation (S101) of capturing an image may be performed. In one embodiment, image capturing may be performed by the image capturing unit 100 of the information collecting system according to some embodiments of the present invention.

Subsequently, the step S102 of extracting text information from the captured image may be performed. In one embodiment, the text information may be extracted by the controller 500. In one embodiment, the extracted text information may be processed separately from the image. In another embodiment, the extracted text information may be processed in connection with an image. That is, the text information and the image information are stored in a matched form, and the filtering is performed based on the text information in the filtering step described later, and the filtered text information and the corresponding image information may be provided to the server 2000.

As described above, the location measuring unit 300 may check location information of the vehicle terminal 1000. In addition, since the image acquired by the vehicle terminal 1000 is an image of a region adjacent to the vehicle terminal 1000 and the adjacent terminal, the obtained image and / or text information may be information connected with location information of the target vehicle.

In one embodiment, the location information may include text information including latitude, longitude, or altitude.

In another embodiment, the location information may include an index value of the map converted to the hilbert curve.

That is, in one embodiment, the information processed by the vehicle terminal 1000 may be information combined with image-text information (eg, license plate) -location information (eg, latitude / longitude / altitude). That is, according to the information collecting method according to some embodiments of the present invention, it is possible to confirm whether the vehicle is a crackdown and the position of the crackdown vehicle.

Subsequently, a step S103 of hashing the extracted text information may proceed. In an embodiment, the hashing of the extracted text information (S103) may be performed by the converter 700. The converter 700 may hash the extracted text information using a hash function used when the bloom filter generator 870 of the server 2000 generates the bloom filter.

Subsequently, step S202 of receiving a bloom filter from a server may proceed. The step S202 of receiving a bloom filter from the server may be generated by the bloom filter generator 870 of the server 2000. As described above, the generation of the bloom filter 210 is advantageously performed in the server 2000 with sufficient computing resources in terms of speed and stability.

In an embodiment, the information collection method may further include a step (S301) of receiving the target information list from the external organization 3000 by the server 2000. The target information list may include a license plate information list as required by the policy. That is, the external organization can provide the server 2000 with, for example, license plate information that requires control or a license plate information list that needs to be managed as an aging diesel vehicle.

In an embodiment, the information collection method further includes the server 2000 storing the target information list in the database unit 860 and the bloom filter generator 870 generating the bloom filter based on the target information list. It may include.

The method of generating the bloom filter by the bloom filter generator 870 is as described above. That is, the bloom filter generator 870 may first initialize all bits of the bloom filter 210 to 0 in order to generate the bloom filter 210. Next, the bloom filter generator 870 may determine a hash index based on elements belonging to the set (eg, license plate information or target location information provided from the external organization 3000).

That is, k number hashes the license plate information or position information provided from the external organization 3000 using the hash function, and based on the hashed license plate information, several bits of the hash filter 210 hash index- You can change the vector value to 1.

Subsequently, a step S104 of filtering text information using a bloom filter may be performed. The bloom filter 210 may filter the hashed text information and / or image information. In detail, the hashed text information and / or image information may be filtered according to the hash index of the bloom filter 210.

Specifically, when the bit-vector value of the hashed text information and / or image information is all 1, the filtering result may be determined as positive. In addition, information having at least one 'zero' bit-vector value among the hashed text information and / or image information may determine the filtering result as voice.

Due to the nature of the bloom filter 210, false negatives do not occur, but false positives may occur.

In an embodiment, the bloom filter 210 may determine that the license plate not included in the target information list is negative, and determine that the license plate included in the target information list is positive. However, there may be false positives in the plates that are judged positive. Therefore, re-selection of this is necessary.

To this end, step S105 of providing the filtered text information to the server may proceed. The server controller 850 of the server 2000 may compare the information determined as positive with the target information list stored in the database unit 860. The server 2000 may compare the information determined as positive with the target information list stored in the database unit 860 and provide only the information that matches the target information list to the external organization 3000.

As described above, the provided information may be information in which text information and image information are combined. In this case, providing the filtered text information to the server (S105) for this may include providing the server 2000 with the filtered text information-image information combination information based on the text information. In this case, the server may compare the combined information of the text information-image information with the target information list.

In order for the information collection method according to some embodiments of the present invention to have a greater effect, it is advantageous that the information collection system is installed in a plurality of vehicles. However, if a plurality of vehicles acquire image information and send it without filtering, the server 2000 may not process it efficiently due to the excessive amount of information. In addition, even if a different filter is installed in the vehicle terminal 1000, this causes excessive use of the computing resources of the vehicle terminal 1000, thereby preventing the vehicle terminal 1000 from performing other functions (eg, black box, navigation, etc.). Can give (In general, the processor of the vehicle terminal 1000 is not suitable for handling excessive tasks.)

As in some embodiments of the present invention, when a bloom filter generated by a server having sufficient computing resources is provided to a vehicle terminal, and the vehicle terminal processes the hashed image information using the same, the filtering operation is performed using less computing resources. Can be performed. In addition, by providing only the filtered information to the server, it is possible to significantly reduce the data throughput using the communication network. In addition, by allowing the server to check the information including false positives again, it is possible to provide only the correct information to the external organization. That is, the amount of data transmission between the server and the external organization can be reduced.

Hereinafter, a method of collecting information using a vehicle according to another embodiment of the present invention will be described.

4 is a flow chart of an information collection method according to another embodiment of the present invention.

Referring to FIG. 4, the information collecting method according to another embodiment of the present invention includes the steps of photographing an image, collecting location information (S11), hashing location information (S12), and providing a bloom filter from a server. Receiving step (S22), the step of filtering the hashed location information using the bloom filter (S13) and providing the filtered location information to the server (S14).

The information collection method according to some embodiments of the present invention may be used to collect image information of a specific region. For example, an information collection method according to some embodiments of the present invention may be used by using a plurality of vehicles in which the vehicle terminal 1000 is installed for the purpose of operating an autonomous vehicle by an external organization 3000 such as a public institution or a company. have.

To this end, a step of photographing an image may be performed first. The photographing of the image may be performed by the image capturing unit 100. This can be done in the same way as described above.

Subsequently, step S11 of collecting location information may proceed. The location information may be performed by the location measuring unit 200. That is, the information processed in this embodiment may be information in a form where the location information and the image match.

Subsequently, step S12 of hashing the location information may proceed. In one embodiment, the location information may include textual information such as latitude / longitude / altitude.

In another embodiment, the location information may include an index value of the map converted to the hilbert curve.

The hashing of the location information may be performed by the converter 700. The converter 700 may hash the position information by using the hash function used when the bloom filter generator 870 of the server 2000 generates the bloom filter.

Subsequently, the step S22 of receiving a bloom filter from the server may proceed. The step S22 of receiving a bloom filter from the server may be generated by the bloom filter generator 870 of the server 2000. As described above, the generation of the bloom filter 210 is advantageously performed in the server 2000 with sufficient computing resources in terms of speed and stability.

In an embodiment, the information collection method may further include a step (S31) of receiving the target location information from the external organization 3000 by the server 2000. The target location information may include location information of a specific area as required by the policy. That is, the external organization may provide the server 2000 with location information of a corresponding area when, for example, image information of a specific area is needed.

In addition, the format of the location information may be the latitude / longitude / altitude or the index value of the map converted into the hilbert curve.

In an embodiment, the information collection method further includes the server 2000 storing the target location information in the database unit 860 and the bloom filter generator 870 generating the bloom filter based on the target location information. It may include.

The method of generating the bloom filter by the bloom filter generator 870 may be substantially the same as described above. That is, the bloom filter generator 870 may first initialize all bits of the bloom filter 210 to 0 in order to generate the bloom filter 210. Next, the bloom filter generator 870 may determine a hash index based on elements belonging to the set (eg, license plate information or target location information provided from the external organization 3000).

That is, k number hashes the license plate information or position information provided from the external organization 3000 using the hash function, and based on the hashed license plate information, several bits of the hash filter 210 hash index- You can change the vector value to 1.

Subsequently, in operation S13, the hashed location information may be filtered using a bloom filter. The bloom filter 210 may filter the hashed location information and / or image information. Specifically, the hashed position information and / or image information may be filtered according to the hash index of the bloom filter 210.

Specifically, when the value of the bit-vector of the hashed position information and / or image information is all 1, the filtering result may be determined as positive. In addition, information having at least one 'zero' bit-vector value among the hashed position information and / or image information may determine the filtering result as voice.

Due to the nature of the bloom filter 210, false negatives do not occur, but false positives may occur.

In an embodiment, the bloom filter 210 may determine that the location information not included in the target location information is negative, and the location information included in the target location information is positive. However, there may be false positives in the plates that are judged positive. Therefore, re-selection of this is necessary.

To this end, step S105 of providing the filtered location information to the server may proceed. In detail, the server 2000 may provide the location information determined as positive and the image matched with the location information. The server controller 850 of the server 2000 may compare the information determined as positive with the target location information stored in the database unit 860. The server 2000 may compare the information determined to be positive with the target location information stored in the database unit 860 to provide only the information corresponding to the target location information and the image information corresponding thereto to the external organization 3000.

As described above, the provided information may be information of a form in which location information and image information are combined. In this case, the step of providing the filtered location information to the server (S105) for this may include providing the server 2000 the combined information of the filtered location information-image information based on the location information.

In this case, by using a plurality of vehicles by limiting a specific area to receive only necessary information, it is possible to obtain desired information while minimizing data usage.

5 is a flowchart of an information collecting method according to another embodiment of the present invention.

Referring to FIG. 5, the information collecting method according to an embodiment of the present invention includes the steps of capturing an image and collecting location information (S1001), extracting text information (S1002), and extracts text information and location information. Hashing (S1003), receiving the first bloom filter and the second bloom filter from the server (S2001), filtering the hashed text information using the first bloom filter, and hashing the second bloom filter. Filtering the filtered location information (S1004) and providing the filtered location information and the filtered text information to the server (S1005).

The information collection method according to some embodiments of the present invention may be used to collect information of a specific license plate vehicle in a specific region. For example, a method of collecting information according to some embodiments of the present invention may be used by using a plurality of vehicles installed by a public institution to control a specific area or to prevent an old diesel vehicle from entering a specific area.

To this end, first, the step of capturing an image and collecting location information (S1001) may be performed. The step of capturing an image and the step of collecting location information (S1001) may be performed by the image capturing unit 100 and the position measuring unit 200.

Subsequently, the extracting of the text information from the image may be performed (S1002). Extraction of the text information may be performed by the controller 500. The text information extracted from the image may be, for example, license plate information of the vehicle.

Subsequently, the process of hashing the text information and the location information (S1003) may proceed. As described above, the location information may include text information such as latitude, longitude, and altitude, or an index value of a map converted into a hilbert curve. The hashing of the text information and the location information may be performed by the converter 700. The converter 700 may hash the position information by using the hash function used when the bloom filter generator 870 of the server 2000 generates the bloom filter.

Subsequently, the step S2001 of receiving the first bloom filter and the second bloom filter from the server may proceed.

The step S2001 of receiving the first bloom filter and the second bloom filter from the server may be performed by the bloom filter generator 870. As described above, the generation of the bloom filter 210 is advantageously performed in the server 2000 with sufficient computing resources in terms of speed and stability.

In an embodiment, the information collection method may further include the step (S3001) of receiving, by the server 2000, the target information list and the target location information from the external organization 3000. The target information list may include license plate information of a specific vehicle. In addition, the target location information may include location information of a specific area as required by the policy. That is, the external organization may provide the server 2000 with the target information list and the target location information, for example, when the location information of the specific vehicle is needed in the specific area.

In an embodiment, the information collecting method may include storing, by the server 2000, a target information list and target location information in the database unit 860, and the bloom filter generator 870 using a first bloom filter based on the target information list. And generating a second bloom filter based on the target location information.

The method of generating the bloom filter by the bloom filter generator 870 may be substantially the same as described above.

Subsequently, the hashed text information may be filtered using the first bloom filter, and the hashed location information may be filtered using the second bloom filter (S1004). The form of the information processed in this embodiment may be a form in which text information and location information are matched.

The first bloom filter may filter the hashed text information, and the second bloom filter may filter the hashed location information. The filtering method may be substantially the same as that described in the information collection method according to some embodiments. As described above, when the first bloom filter and the second bloom filter are filtered simultaneously or sequentially, the amount of data transmitted from the vehicle terminal 1000 to the server 2000 may be further reduced. Since the two bloom filters under different conditions, the reliability of the information passing through the filter can be improved.

Due to the nature of the bloom filter, no false negatives occur, but false positives can occur.

According to an embodiment, the first bloom filter may determine that the information not included in the target information list is negative, and the information included in the target information list is positive. However, there may be false positives in the plates that are judged positive. Therefore, re-selection of this is necessary.

The same applies to the second bloom filter. Therefore, step S1005 may be performed to provide the filtered text information and the location information to the server.

The method of collecting information according to an embodiment may further include comparing the provided text information with the target information list and comparing the provided location information with the target location information (S2003).

Specifically, only the information satisfying the two conditions of location information determined as positive and text information determined as positive may be provided to the server 2000. The server controller 850 of the server 2000 may compare the information determined as positive with the target information list and the target location information stored in the database unit 860. The server 2000 may compare the information determined to be positive with the target information list and the target location information stored in the database unit 860 and provide only the information matching the target information list and the target location information to the external organization 3000. have.

As described above, the information provided may be information of a combination of text information, image information, and location information. In this case, the information provided to the server 2000 is text information-image information-location information combination information filtered by the first bloom filter based on the text information and filtered by the second bloom filter based on the location information. Can be.

In this case, by using a plurality of vehicles by limiting a specific area to receive only necessary information, it is possible to obtain desired information while minimizing data usage.

Although described above with reference to the embodiments of the present invention, which is merely an example and not limiting the present invention, those skilled in the art to which the present invention pertains without departing from the essential characteristics of the embodiments of the present invention. It will be appreciated that various modifications and applications not illustrated above are possible. For example, each component specifically shown in the embodiment of the present invention may be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

1000: vehicle terminal
2000: server
3000: external organ

Claims (11)

An information collection system including a vehicle terminal installed in a vehicle and a server connected to the vehicle terminal,
The vehicle terminal may include an image photographing unit which acquires an image around the vehicle;
A controller for extracting text information from the image;
A converter for hashing the text information; And
It includes a filtering unit for filtering the hashed text information,
The server includes a bloom filter generator and a database unit for storing target information,
The bloom filter generator generates at least one bloom filter based on the target information, and provides the bloom filter to the vehicle terminal, and the filter unit filters the hashed text information using the bloom filter. . The method of claim 1,
The control unit provides the server with the text information determined to be positive by the filtering unit,
The server further includes a server control unit for comparing the provided text information and the target information stored in the database unit. The method of claim 1,
Further comprising a position measuring unit for measuring the position information of the vehicle,
The conversion unit is an information collection system using a vehicle to hash the position information. The method of claim 3,
The target information includes a target information list and target location information, and the bloom filter generator generates a first bloom filter based on the target information list, and generates a second bloom filter based on the target location information.
The first bloom filter and the second bloom filter are provided to the vehicle terminal, and the filtering unit filters the hashed text information using the first bloom filter, and the hashed text using the second bloom filter. Information collection system using a vehicle for filtering location information. An information collection method operated by a vehicle terminal installed in a vehicle and a server connected to the vehicle terminal,
Acquiring an image by capturing an image around the vehicle with a camera installed in the vehicle;
Extracting text information from the image;
Hashing the text information;
Receiving at least one bloom filter from the server;
Filtering the hashed text information using the bloom filter; And
And providing the filtered text information to a server. The method of claim 5,
The server stores the target information, and the server further comprises the step of generating a bloom filter based on the target information. The method of claim 5,
Obtaining location information of the vehicle and hashing the location information. The method of claim 7, wherein
The bloom filter includes a first bloom filter and a second bloom filter,
And the first bloom filter filtering the hashed text information and the second bloom filter filtering the hashed location information.

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