WO2019020082A1 - Procédé de génération de blocage géographique et dispositif associé - Google Patents

Procédé de génération de blocage géographique et dispositif associé Download PDF

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Publication number
WO2019020082A1
WO2019020082A1 PCT/CN2018/097275 CN2018097275W WO2019020082A1 WO 2019020082 A1 WO2019020082 A1 WO 2019020082A1 CN 2018097275 W CN2018097275 W CN 2018097275W WO 2019020082 A1 WO2019020082 A1 WO 2019020082A1
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coordinate
coordinates
joining
distance
current
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PCT/CN2018/097275
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English (en)
Chinese (zh)
Inventor
李靖
唐毅力
吕玮
黎旭荣
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阿里巴巴集团控股有限公司
李靖
唐毅力
吕玮
黎旭荣
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Publication of WO2019020082A1 publication Critical patent/WO2019020082A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences

Definitions

  • the present application relates to the field of computers, and in particular, to a method and device for generating a geofence.
  • LBS Location-Based Service
  • Geo-fencing technology can enclose a geofence area with a virtual fence.
  • the mobile terminal is active in the geofence area or in the vicinity of the geofence area, the notification and reminder corresponding to the geofence area can be received.
  • the boundary information When a certain area is drawn and highlighted by the fence coordinates forming the geofence, the boundary information usually contains a large amount of coordinate information. If the coordinate information is not processed directly, the coordinate information is used for display, which may cause obvious performance problems and affect the use experience. .
  • the main purpose of one or more embodiments of the present specification is to provide a method for generating a geofence and an apparatus thereof, which are directed to solving the above-mentioned coordinate screening problem.
  • An aspect of one or more embodiments of the present specification provides a geofence generating method, the method comprising: receiving a plurality of coordinates in a coordinate list, wherein the plurality of coordinates includes a current coordinate; determining a reference coordinate of the current coordinate Determining whether the distance between the current coordinate and the reference coordinate is greater than or equal to the joining distance, wherein the joining distance is a metric that determines whether the current coordinate is determined to be added coordinates in the distance; if the distance is greater than or equal to the joining distance, determining the current coordinate to form a geofence Join the coordinates.
  • a geofence is generated using the determined join coordinates.
  • the method further includes: calculating a screening probability, where the screening probability is a metric that determines whether the current coordinate is determined to be a joining coordinate; if the distance between the current coordinate and the reference coordinate is less than the joining distance, screening The probability determines whether the current coordinate is a join coordinate.
  • a geofence generating apparatus comprising: a receiving unit that receives a plurality of coordinates in a coordinate list, wherein the plurality of coordinates include current coordinates; determining a reference a coordinate unit that determines a reference coordinate of the current coordinate; a distance determining unit that determines whether a distance between the current coordinate and the reference coordinate is greater than or equal to a joining distance, wherein the joining distance is a metric that determines whether the current coordinate is determined to be a joining coordinate in the distance; The first determining unit determines, according to the distance determining unit, that the distance between the current coordinate and the reference coordinate is greater than or equal to the joining distance, determining that the current coordinate is the joining coordinate forming the geofence; and the generating unit generates the geofence by using the determined joining coordinates.
  • the device further includes: calculating a screening probability unit, and calculating a screening probability, where the screening probability is a metric that determines whether the current coordinate is determined as a joining coordinate by using a probability; and the second determining unit determines whether to join by using the screening probability Current coordinates.
  • a geofence device comprising: a processor;
  • Arranging to store a computer class execution instruction memory the executable instructions, when executed, causing the processor to: receive a plurality of coordinates in a coordinate list, wherein the plurality of coordinates include current coordinates; determining The reference coordinate of the current coordinate; determining whether the distance between the current coordinate and the reference coordinate is greater than or equal to the joining distance, wherein the joining distance is a metric that determines whether the current coordinate is determined to be added coordinates in the distance; if the distance is greater than or equal to the joining distance, determining the current The coordinates are the joining coordinates that form the geofence. A geofence is generated using the determined join coordinates.
  • the joining distance is used to filter a plurality of coordinates in the coordinate list to determine the joining coordinates of forming the geofence, thereby being able to reduce the geofence while retaining the shape of the area.
  • the screening probability is used to further filter the coordinates that cannot be added by using the joining distance based on the screening of the coordinates by using the joining distance, so that the full shape of the region can be preserved while enriching Details of the area.
  • FIG. 1 is a diagram showing a geofence in accordance with one or more embodiments of the present specification
  • FIG. 2 is a flow chart showing a method of generating a geofence in accordance with one or more embodiments of the present specification
  • FIG. 3 is a flow chart showing a method of generating a geofence according to another embodiment of the present specification.
  • 4A through 4F are diagrams illustrating determining coordinates in accordance with one or more embodiments of the present specification.
  • FIG. 5 is a block diagram showing a geofence generating device in accordance with one or more embodiments of the present specification
  • FIG. 6 is a block diagram showing an electronic device that performs a geofence generation method in accordance with one or more embodiments of the present specification
  • FIG. 1 is a diagram showing a geofence in accordance with one or more embodiments of the present specification.
  • the geofence technology can be used to connect the geofences forming the geofences to form a geofence of Zhengzhou City as shown in FIG. 1, and the geofence is displayed on the display. It can be clearly seen that the more coordinates that form the geofence, the clearer the outline of the displayed area, but the more coordinates that form the geofence at the same time, the higher the requirements on the display device. In addition, in many cases, the display device only needs to display the outline of the geofence, and does not need to display outline information that is too detailed. Based on the above considerations, the present application proposes a geofence generation method.
  • FIG. 2 is a flow chart showing a geofence generation method in accordance with one or more embodiments of the present specification.
  • the coordinate list may include a list of a plurality of coordinates of a geofence that has formed a specific region (eg, Zhengzhou City in FIG. 1), that is, coordinates in the coordinate list are based on a geofence A set of multiple coordinates that the algorithm has determined.
  • the current coordinates can include coordinates that belong to the list of coordinates and are traversing, that is, the decision being made to determine whether to add it to the geofence is the current coordinate.
  • the "joining" mentioned in one or more embodiments of the present specification may be to determine the coordinates as the final fence data, in other words, if a certain coordinate can be added, the coordinates are determined to be displayable on the display. coordinate.
  • the reference coordinates of the current coordinates are determined.
  • the reference coordinates are the join coordinates that are closest in time to the current coordinates, where the join coordinates may be the coordinates that are ultimately added to the geofence and displayable on the display.
  • the current coordinate is determined as the joining coordinate. For example, when the first coordinate in the coordinate list is operated, there is no joining coordinate closest to the current coordinate in time, and the first coordinate is determined as the joining coordinate, so that when the second coordinate is operated, the first The coordinates can be used as the reference coordinates of the second coordinate.
  • step S230 it is determined whether the distance between the current coordinate and the reference coordinate is greater than or equal to the joining distance, wherein the joining distance is a metric that determines whether the current coordinate is determined to be the joining coordinate in the distance.
  • the joining distance is calculated by the distance between the plurality of coordinates in the coordinate list and the predetermined maximum number of joining coordinates determined according to the joining distance. The specific formula is as follows:
  • the distance may include Any distance algorithm for the length of the space, for example, may include Euclidean distance, Manhattan distance, and Chebyshev distance.
  • Count max is a predetermined maximum number of joining coordinates determined according to the joining distance, and the predetermined maximum number of joining coordinates may indicate the maximum number of coordinates that can be displayed on the screen, which is usually preset by the user according to the display performance and experience of the display device. Fixed.
  • step S240 if it is determined that the distance between the current coordinate and the reference coordinate is greater than or equal to the joining distance, the current coordinate is determined to be the joining coordinate forming the geofence. It can be seen from the above analysis that the distance sum is fixed, and it can be seen that the number of dynamically added coordinates can be controlled by dynamically setting Count max .
  • step S250 a geofence is generated using the determined joining coordinates.
  • determining whether the next coordinate of the current coordinate is a joining coordinate forming a geofence according to a clockwise direction or a counterclockwise direction of the closed contour formed by the plurality of coordinates in the coordinate list, in this manner, determining multiple Whether each coordinate in the coordinates is the joining coordinate that forms the geofence.
  • the determined joining coordinates can be used to generate the geofence.
  • the geofence generation method utilizes the addition distance to filter a plurality of coordinates in the coordinate list to determine the joining coordinates forming the geofence, thereby being able to retain the shape of the region while reducing the coordinates.
  • the number of displays increases display performance.
  • step S230 if it is judged in step S230 that the distance between the current coordinate and the reference coordinate is smaller than the joining distance, the current coordinate can be further processed, which will be described in detail below with reference to FIG.
  • FIG. 3 is a flow chart showing a method of generating a geofence according to another embodiment of the present specification. Since steps S210 to S230 are the same as steps S310 to 330, steps S310 to 330 will not be described in detail herein.
  • step S340 a screening probability is calculated, and the screening probability is a metric that determines whether the current coordinate is determined to be a joining coordinate in terms of probability.
  • the screening probability is determined by adding a predetermined desired number of coordinates, the actual number of added coordinates, and the number of coordinates in the coordinate list, the formula of which is as follows:
  • Count E represents a predetermined desired number of added coordinates, that is, a desired number of coordinates displayed on the screen
  • Count Max represents a maximum value of the actual number of joined coordinates added according to the joining distance, that is, a plurality of coordinates in the coordinate list. After performing the geofence generation method, the maximum number of join coordinates is determined.
  • Count E and Count Max may be predetermined by the user before executing the fence generation algorithm of one or more embodiments of the present specification. Alternatively, the user may Count E and Count Max are predetermined according to the display performance and experience of the display device, and Count All represents the number of coordinates in the coordinate list.
  • step S350 it is determined by screening probability whether or not to join the current coordinates.
  • the random number allocation algorithm is used to allocate a random number to the current coordinate, wherein the random number ranges from 0 to 1; if the random number assigned to the current coordinate is smaller than the screening probability, the current coordinate is determined to be joined. coordinate.
  • the user can directly call the interface of the encapsulated random number allocation algorithm to assign a random number to the current coordinates.
  • step S350 If it is determined in step S350 that the current coordinates are added by the screening probability, then the current coordinates are determined to be the joining coordinates of the geofence formed in step S360, and if the current coordinates are not added by the screening probability in step S350, the current coordinates are obtained. Cannot be used as a join coordinate.
  • a geofence may be generated based on the determined joining coordinates.
  • the geofence generation method utilizes the screening probability to further filter the coordinates that cannot be added by using the joining distance on the basis of the screening by using the joining distance, so that the area can be maintained in the holding area.
  • the complete shape enriches the details of the area. For example, for a region with a large difference between the east and west contours, that is, the western contour is smooth and the eastern contour is tortuous. If only the addition distance is used to filter the coordinates, the eastern contour may be excessively smoothed. Further screening by using the screening probability can increase the coordinates of the eastern contour, thus enriching the details of the eastern part.
  • Fig. 4A shows a closed contour formed by a plurality of coordinates in a coordinate list.
  • the number of coordinates constituting the coordinate list is simplified in Fig. 4A, and the number of coordinates in actual application will be much larger than this.
  • the coordinate A is used as the starting coordinate (the first coordinate in the coordinate list described above), there is no joining coordinate closest to the coordinate A in time, so the coordinate A does not have the reference coordinate, so The coordinate A can be determined as the joining coordinates, and then the coordinate B is judged.
  • the reference coordinate of the coordinate B is the coordinate A
  • the coordinate B can be determined according to the method described in FIG. 2. Specifically, it is determined whether the distance AB between the coordinate A and the coordinate B is greater than the joining distance. It is judged that the distance AB is greater than the joining distance, and the coordinate B can be determined as the joining coordinates.
  • the coordinate C is determined, and the reference coordinate of the coordinate C is the coordinate B.
  • the method is calculated according to the method described in FIG. The probability is screened, and if the coordinates are not added according to the screening probability, the coordinate D is judged.
  • the reference coordinate of the coordinate D is the coordinate B. It is judged that the distance BD between the coordinate B and the coordinate D is greater than the joining distance, and the coordinate D is determined to be the joining coordinate.
  • a plurality of coordinates in the coordinate list are sequentially determined to determine whether each coordinate is a joining coordinate forming a geofence, and then the determined joining coordinates are used to generate a geofence as shown in FIG. 4F.
  • FIG. 4A to FIG. 4F show that each coordinate in the coordinate list for forming the contour of the geofence is judged in time, in actual application, the contour of the geofence may also be formed in reverse time. Each coordinate in the coordinate list is judged.
  • FIG. 5 only shows components related to the present exemplary embodiment, and that the geofence generating device 500 further includes components other than those shown in FIG. Common components.
  • FIG. 5 is a block diagram showing a geofence generating device in accordance with one or more embodiments of the present specification.
  • the geofence generating apparatus 500 includes a receiving unit 510, a determination reference coordinate unit 520, a distance judging unit 530, a first determining unit 540, and a generating unit 550.
  • the receiving unit 510 receives a plurality of coordinates in the coordinate list, wherein the plurality of coordinates includes the current coordinates.
  • the determination reference coordinate unit 520 determines the reference coordinates of the current coordinates, wherein the reference coordinates are the joined coordinates that are closest in time to the current coordinates.
  • the distance determining unit 530 determines whether the distance between the current coordinate and the reference coordinate is greater than or equal to the joining distance, wherein the joining distance is a metric that determines whether the current coordinate is determined to be the joining coordinate in the distance.
  • the distance judging unit 530 calculates the joining distance by the distance between the plurality of coordinates in the coordinate list and the predetermined maximum number of joining coordinates.
  • the first determining unit 540 determines, according to the distance determining unit, that the distance between the current coordinate and the reference coordinate is greater than or equal to the joining distance, and determines that the current coordinate is the joining coordinate forming the geofence.
  • the generating unit 550 generates a geofence according to the determined joining coordinates.
  • the geofence generating apparatus 500 further includes a calculation screening probability unit (not shown) and a second determining unit (not shown), wherein the screening probability unit is calculated, and the screening probability is calculated, and the screening probability is in probability Determining whether the current coordinate is determined as a metric of the added coordinate; the second determining unit determines, according to the distance determining unit, that the distance between the current coordinate and the reference coordinate is less than the joining distance, and determines whether the current coordinate is the joining coordinate by the screening probability.
  • the first determining unit determines whether the current coordinate is a clockwise or counterclockwise direction of the closed contour formed by the plurality of coordinates in the coordinate list after forming the coordinate of the geofence, and determining whether the next coordinate of the current coordinate is The joining coordinates of the geofence are formed.
  • the device further includes: a third determining unit that determines, in response to the reference coordinate unit, that the reference coordinates are not present, and determines the current coordinates as the joining coordinates forming the geofence.
  • the calculated screening probability unit calculates the screening probability by adding a predetermined desired number of coordinates, the actual number of joined coordinates, and the number of coordinates in the coordinate list.
  • the second determining unit allocates a random number to the current coordinate by using a random number allocation algorithm, where the random number ranges from 0 to 1; if the random number assigned to the current coordinate is smaller than the screening probability, then the determining unit determines The current coordinate is the join coordinate.
  • the distance comprises a Manhattan distance.
  • the first determining unit, the second determining unit, and the third determining unit are both used to determine whether the current coordinate is a joining coordinate. Therefore, the determined joining coordinate may be the first determining unit, the second determining unit, or the first The third determines the joining coordinates determined by the unit.
  • the geofence generating apparatus utilizes the joining distance to filter a plurality of coordinates in the coordinate list to determine the joining coordinates forming the geofence, thereby being able to reduce the geography while retaining the shape of the area.
  • the number of coordinates of the fence is displayed.
  • the geo-fence generation algorithm uses the screening probability to further filter the coordinates that cannot be added by using the joining distance on the basis of screening the coordinates by using the joining distance, so that the area can be maintained in the holding area.
  • the complete shape enriches the details of the area.
  • FIG. 6 illustrates a block diagram of an electronic device that performs a geofence generation method in accordance with one or more embodiments of the present specification.
  • the electronic device includes a processor, an internal bus, a network interface, memory, and non-volatile memory, and of course may also include hardware required for other services.
  • the processor reads the corresponding computer program from the non-volatile memory into the memory and then runs the web page capture device formed on the logical level.
  • the present application does not exclude other implementation manners, such as a logic device or a combination of software and hardware, etc., that is, the execution body of the following processing flow is not limited to each logical unit, and may be Hardware or logic device.
  • One or more embodiments of the present specification also provide a computer readable storage medium storing one or more programs, the one or more programs including instructions that when included in a plurality of applications When the electronic device is executed, the electronic device can be caused to perform the method of the embodiment shown in FIG. 2.
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • HDL Hardware Description Language
  • the controller can be implemented in any suitable manner, for example, the controller can take the form of, for example, a microprocessor or processor and a computer readable medium storing computer readable program code (eg, software or firmware) executable by the (micro)processor.
  • computer readable program code eg, software or firmware
  • examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, The Microchip PIC18F26K20 and the Silicone Labs C8051F320, the memory controller can also be implemented as part of the memory's control logic.
  • the controller can be logically programmed by means of logic gates, switches, ASICs, programmable logic controllers, and embedding.
  • Such a controller can therefore be considered a hardware component, and the means for implementing various functions included therein can also be considered as a structure within the hardware component.
  • a device for implementing various functions can be considered as a software module that can be both a method of implementation and a structure within a hardware component.
  • the system, device, module or unit illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product having a certain function.
  • a typical implementation device is a computer.
  • the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or A combination of any of these devices.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
  • processors CPUs
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-persistent memory, random access memory (RAM), and/or non-volatile memory in a computer readable medium, such as read only memory (ROM) or flash memory.
  • RAM random access memory
  • ROM read only memory
  • Memory is an example of a computer readable medium.
  • Computer readable media includes both permanent and non-persistent, removable and non-removable media.
  • Information storage can be implemented by any method or technology.
  • the information can be computer readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory. (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disk read only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape storage or other magnetic storage devices or any other non-transportable media can be used to store information that can be accessed by a computing device.
  • computer readable media does not include temporary storage of computer readable media, such as modulated data signals and carrier waves.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the application can be described in the general context of computer-executable instructions executed by a computer, such as a program module.
  • program modules include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types.
  • the present application can also be practiced in distributed computing environments where tasks are performed by remote processing devices that are connected through a communication network.
  • program modules can be located in both local and remote computer storage media including storage devices.

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Abstract

La présente invention concerne un procédé de génération de blocage géographique et un dispositif associé. Le procédé comprend les étapes consistant à : recevoir une pluralité d'ensembles de coordonnées d'une liste de coordonnées, la pluralité d'ensembles de coordonnées comprenant des coordonnées actuelles; déterminer des coordonnées de référence des coordonnées actuelles; déterminer si une distance entre les coordonnées actuelles et les coordonnées de référence est supérieure ou égale à une distance supplémentaire, la distance supplémentaire servant à déterminer s'il est confirmé que les coordonnées actuelles sont une mesure de coordonnées supplémentaires en termes de distance; si la distance entre les coordonnées de référence et les coordonnées actuelles est supérieure ou égale à la distance supplémentaire, déterminer que les coordonnées actuelles sont des coordonnées supplémentaires servant à former un blocage géographique; et générer un blocage géographique au moyen des coordonnées supplémentaires déterminées.
PCT/CN2018/097275 2017-07-28 2018-07-26 Procédé de génération de blocage géographique et dispositif associé WO2019020082A1 (fr)

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