WO2018210013A1 - 基于资源分布的地图缩放方法、存储器、控制设备及系统 - Google Patents

基于资源分布的地图缩放方法、存储器、控制设备及系统 Download PDF

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WO2018210013A1
WO2018210013A1 PCT/CN2018/075678 CN2018075678W WO2018210013A1 WO 2018210013 A1 WO2018210013 A1 WO 2018210013A1 CN 2018075678 W CN2018075678 W CN 2018075678W WO 2018210013 A1 WO2018210013 A1 WO 2018210013A1
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center point
map
zoom center
resource distribution
zoom
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PCT/CN2018/075678
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English (en)
French (fr)
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杨磊君
孟帅
国全超
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上海蔚来汽车有限公司
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Publication of WO2018210013A1 publication Critical patent/WO2018210013A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/29Geographical information databases
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0481Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/048Indexing scheme relating to G06F3/048
    • G06F2203/04806Zoom, i.e. interaction techniques or interactors for controlling the zooming operation

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  • the invention belongs to the technical field of map zooming, and in particular relates to a map zooming method based on resource distribution, a memory, a control device and a system.
  • Real-time monitoring of map-based resource distribution information is essential in the operation and maintenance system. Users can view details of resource distributions in different regions of the map by dragging and dropping with the mouse. Taking the mouse drag and drop as an example, the traditional map zooming method is based on the current mouse stay point on the map or a fixed center point on the map, and the area is enlarged or reduced by scrolling the mouse wheel or keyboard operation, so that the user can further observe this. Real-time information on resources in a region.
  • a zooming method based on a mouse stay point or a fixed center point has the following drawbacks.
  • the present invention provides a map zoom method based on resource distribution.
  • the method includes the steps of: acquiring a first zoom center point of the map; acquiring resource distribution information within a predetermined range around the first zoom center point; and obtaining a second zoom center point according to the resource distribution information; The second zoom center point to scale the map.
  • the specific step of “acquiring resource distribution information within a predetermined range around the first zoom center point” includes: drawing a center closed area centering on the first zoom center point Drawing at least one pre-selected closed area around the enclosed area; obtaining resource distribution information of the central closed area and the at least one pre-selected closed area within a predetermined range of perimeters;
  • the specific step of “finding a second zoom center point according to the resource distribution information” includes: acquiring resources in the central closed area according to the resource distribution information. a quantity S (A0) and a quantity of resources max s in the preselected closed area in which the resource distribution is obtained; determining whether max s and S (A0) satisfy a preset condition; if yes, the second zoom center point is The center point of the preselected closed area with the most resource distribution; if not, the first zoom center point is taken as the second zoom center point.
  • the step of "scaling the map based on the second zoom center point" includes: before the second zoom center point moves to the first zoom center point At the same time or after, the map is zoomed around the second zoom center point; the zoomed map is displayed.
  • the method further includes a display pre-processing step, where the display pre-processing step includes: when the map is zoomed multiple times within a preset time, when multiple steps are obtained When the center point is zoomed, the map in which the map is scaled according to the last zoomed center point is displayed.
  • the resource is a resource associated with a current vehicle.
  • the resource is a charging post and/or a parking space.
  • the present invention also provides a memory in which a plurality of instructions are stored, the instructions being loaded by a processor and performing the steps in the map zooming method described above.
  • the present invention also provides a control device, the control device comprising a processor and a memory, the memory storing a plurality of instructions; the processor for implementing each of the instructions; wherein the instructions are loaded by a processor and Perform the steps in the above map zoom method.
  • the present invention also provides a map scaling system based on resource distribution, the map zooming system comprising: an input processing module capable of deriving a first zoom center point and a zoom ratio of the map according to the input information; and a scaling processing module capable of The resource distribution information within a predetermined range around the first zoom center point is processed, and a second zoom center point is derived based on the resource distribution information; a display rendering module capable of being based on the second zoom center point and the Scale to scale the map.
  • the “the scaling processing module processes the resource distribution information within a predetermined range around the first zoom center point” further includes: the first zoom center point Drawing a central closed area for the center; drawing at least one pre-selected closed area around the closed area within a predetermined range; acquiring resource distribution information of the central closed area and the at least one pre-selected closed area; according to the resource distribution Information, obtaining the quantity of resources S (A0) in the central closed area, and obtaining the quantity of resources max s in the preselected closed area with the most resource distribution; determining whether max s and S (A0) satisfy the preset condition; Yes, the second zoom center point is a center point of the preselected closed area with the most resource distribution; if not, the first zoom center point is used as the second zoom center point.
  • the process of scaling the map by the display rendering module includes: moving a second zoom center point to the first zoom center point; centering on the second zoom center point Scale the map.
  • the system further includes a display pre-processing module, wherein the pre-processing module is configured to: when the map is zoomed multiple times within a preset time, when the plurality of When the center point is zoomed, the map in which the map is scaled according to the last zoomed center point is displayed.
  • the resource is a resource associated with the current vehicle.
  • the resource is a charging post and/or a parking space.
  • dynamically adjusting the zoom center point of the map based on the resource distribution is no longer simply using the mouse stay point or the fixed center point as the zoom center of the map.
  • FIG. 1 is an overall flowchart of a resource distribution based map scaling method of the present invention
  • FIG. 2 is a schematic diagram of a state before map zooming of a resource distribution based map scaling method according to the present invention
  • FIG. 3 is a schematic diagram of a zoomed map interface obtained by a resource distribution based map scaling method according to the present invention
  • FIG. 4 is a schematic structural diagram of a resource distribution based map scaling system of the present invention.
  • the resource distribution based map zooming method provided by the invention no longer simply uses the traditional mouse stay point or the fixed center point as the zoom center point to perform zooming of the map, but based on the distribution of resources, realizing the user to optimize while zooming the map. Display the resource display on the device, thus avoiding the trouble that the user keeps dragging the map to relocate the resource after the map is zoomed.
  • the “resource distribution” in the text can be understood as a distribution in a certain area of the map such as restaurants, shopping malls, public facilities (such as ATMs, gas stations, charging stations/piles), etc., but also other mobile Resources (such as shared bicycles, mobile charging cars, etc.).
  • the resource scaling based map scaling method includes the following steps:
  • the purpose of actively analyzing the resource distribution of the current and neighboring regions and dynamically changing the zoom center point of the map is realized. For example, when the resource distribution adjacent to the first zoom center point is small, at this time, after zooming the map centered on the first zoom center point, resources farther from the first zoom center point are likely to be displayed in the visible area. Outside (that is, the resources that the user can see become smaller as the map is enlarged).
  • the second zoom center point determined according to the resource distribution information within the predetermined range around the first zoom center point is used as a new zoom center point to zoom the map to achieve optimal zooming.
  • the second zoom center point also needs to satisfy certain conditions, at least the number of resources distributed adjacent to the second zoom center point is greater than the number of resource distributions adjacent to the first zoom center point.
  • the first zoom center point is within a predetermined range around can be understood as determining an area on the map according to the scale of the map based on the current zoom point according to different application scenarios.
  • the area may be centered on the location of the user, and the radius may be within a range of two kilometers; or an area including the location of the user may be determined not centered on the location of the user.
  • the above-mentioned "two kilometers” is only an illustrative example, and those skilled in the art can set different ranges according to actual application situations, such as one kilometer, four kilometers, etc., or replace the square circle within a range of two kilometers. For other forms such as "two kilometers left and right, four kilometers before and after", "two kilometers before and after a certain road”.
  • steps S110-S140 The specific implementation manners of steps S110-S140 will be described in detail below.
  • the first zoom center point may be a stop point of the current mouse on the map or a fixed center point on the map, and can also be based on the user.
  • the operation determines the zoom ratio of the map.
  • step S120 after the first zoom center point is determined, the center closed area is drawn centering on the first zoom center point; at least a pre-selected closed area is drawn around the closed area in the surrounding predetermined range; acquiring the center closed area and the Resource distribution information in at least one pre-selected closed area.
  • FIG. 2 is a schematic diagram of dynamic adjustment of a map zoom center point of the present invention. As shown in FIG.
  • a second zoom center point is obtained according to the resource distribution information.
  • the statistical area is drawn as a regular hexagon
  • the regular hexagon may be replaced with a square, a rectangle or even some irregular patterns during use, as long as the pre-precision can be
  • the scope of resource segment information is included and the most intensive resource distribution information can be obtained. That is to say, the above-described substitution of the shape of the region can give substantially the same result, and thus does not depart from the scope of protection of the present invention.
  • a new center point is calculated based on resources in a divided area with relatively fixed positions and states. For a resource whose position and state are relatively changed, a person skilled in the art can also allocate a certain weight to different regions through prediction and evaluation, and then, for a resource distribution of different states, the second zoom center point can also be calculated according to the above method.
  • the median (Median) also known as the median, represents a value in a sample, population, or probability distribution in statistics. The median divides the set of values into equal upper and lower parts.
  • one of the positive middles can be found as the median by sorting all observations (or from low to high). Specifically, if there are an even number of observations, the average of the two most intermediate values is usually taken as the median. Therefore, when the total number n of closed areas is an odd number, M takes the value of the (n+1)/2 position of the series; when the total number n of closed areas is even, M takes the position of the sequence (n/2) and (n/2+) 1) The average number of position values.
  • P1 and P2 described above are intermediate parameters determined by the inventors through repeated trials, observations, and comparisons by the inventors to determine whether or not to perform central zoom point updating, and can be understood as a dimensionless intermediate amount.
  • step S140 the map is scaled based on the second zoom center point.
  • FIG. 3 is a schematic diagram of a scaled map interface obtained by a resource distribution based map scaling method according to the present invention.
  • C 2 which is the most densely distributed resource as the new map zoom center point
  • C 2 is determined as a new map zoom center point may be moved to before the C 2 C 1 point after or at the same time, the center C 2 in the map scale.
  • the zoomed map interface that the user finally sees is shown in FIG. 3.
  • the map can be scaled in any achievable zoom form, as long as the final display to the user is determined by the new zoom center point.
  • the interface is fine.
  • the zooming and display of the map can be realized according to the zoom center point, and will not be described in detail herein.
  • the present invention aims to acquire a new zoom center point according to the situation of resource distribution, so as to realize the user to optimize the resource display on the display device while zooming the map.
  • the zoom center point of the map may continuously change with the continuous input of the user, for example, the continuous scrolling of the mouse wheel causes the map scale to be continuously adjusted multiple times.
  • the zoom center points C 3 , C 4 , ..., C n of different positions if the map is scaled with different zoom center points each time, it is easy to cause the interface to shake.
  • a display pre-processing step is also included.
  • the zoomed map is paused and the zoom center points C 1 -C n are buffered.
  • the map is scaled according to the first zoom center point C 1 and the latest zoom center point C n and output to the display device. In this way, only the final zoom of the map is needed, effectively avoiding jitter of the interface.
  • P 1, P 2 is compared with a preset value by calculating P 1, P 2 to determine the size of the second center point scale.
  • the calculation methods of P 1 and P 2 are only preferred embodiments of the present invention, and those skilled in the art may also use other algorithms to determine the second zoom center point. That is, after counting the number of resources in each area, how to determine the second zoom center point is not limited to the P 1 and P 2 algorithms mentioned in the above embodiments, and according to the idea of the present invention, P 1 , P The changes made by the algorithm of 2 are within the scope of protection of the present invention.
  • the “resources” in the “resource-based map scaling method” of the present invention may include a sum of all resources (such as a summary of resources such as shopping malls, restaurants, charging posts, parking spaces, ATMs, etc. around the first zoom point), It can also be a part of resources to further display the user's demand for certain or certain kinds of specific resource distribution information, thereby further improving the user experience.
  • the first zoom point is the current position of the vehicle owner, and the corresponding map zooming may be performed only for the number of charging piles or parking spaces within a certain range near the current position and the distribution thereof. Taking the charging pile as an example, based on the obtained position of the charging pile and its distribution density, it is convenient for the vehicle owner to determine the best replenishing destination.
  • the present invention also provides a memory in which a plurality of instructions are stored, the instructions being loaded by a processor and performing the steps in the map zooming method described above. For details, refer to the above, and details are not described herein again.
  • the present invention also provides a control device comprising a processor and a memory.
  • the memory stores a plurality of instructions; the processor is used to implement each instruction.
  • the instruction is loaded by the processor and performs each step in the above-mentioned map zooming method.
  • the present invention also provides a map scaling system based on resource distribution.
  • 4 is a block diagram showing the structure of a resource distribution based map scaling system of the present invention.
  • the map zooming system includes: an input processing module capable of deriving a first zoom center point and a zoom ratio of the map according to the input information; and a scaling processing module, the resource within a predetermined range around the first zoom center point The distribution information is processed, and a second zoom center point is obtained based on the resource distribution information; the display rendering module is configured to scale the map based on the second zoom center point and the zoom ratio.
  • the user usually operates the map through an input device (mouse, keyboard, touch, gesture, etc.), the input device accepts the user's operation and generates a corresponding event to the user processing unit, and the input processing module infers according to the input event.
  • the map of this operation zooms the coordinates of the center point (the first zoom center point) and the scale of the zoom.
  • the current mouse is on the map or a fixed center point on the map.
  • the scaling processing module processes the resource distribution information within a predetermined range around the first zoom center point, and derives a second zoom center point based on the resource distribution information.
  • the process of calculating the second zoom center point refers to step S120 and step S130 in the above, and details are not described herein again.
  • the display rendering module is capable of scaling the map based on the second zoom center point and zoom ratio.
  • the display rendering module can move the map to the second zoom center point to scale the map according to the zoom ratio. You can also move C 2 to the position of C 1 , then zoom the map and render the interface, and display the final zoomed map to the user.
  • the display rendering module can also dynamically change other properties of the map (such as increasing or decreasing the scale of the local area, thereby increasing the display area of the area with more resources).
  • the resulting map can be displayed on the output device.
  • the output device can be a screen or a display device such as 3D, AR, or VR.
  • the display module is responsible for rendering smoothly adjust the map scaling process, such that the transitions set the second zoom center point C 2 to move the first zoom center point C 1, and then re-rendered map scaling interface.
  • the system also includes a display pre-processing module, which may be a separate module or integrated into the display rendering module.
  • the display pre-processing module detects a continuous change in the zoom center point, the output to the display device is paused and the zoom center point is cached.
  • the display rendering module scales the map according to the first zoom center point and the newly determined zoom center point and outputs the map to the display device.
  • the present invention dynamically adjusts the zoom center point of the map based on the resource distribution, and no longer simply uses the mouse stay point or the fixed center point as the zoom center of the map.
  • the user can optimize the display of the resources on the display device while zooming the map, and also avoid the trouble that the user keeps dragging the map to relocate the resources after the map is zoomed.

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Abstract

一种基于资源分布的地图缩放方法、存储器、控制设备及系统,旨在解决基于鼠标停留点或者固定中心点的缩放方式导致的地图显示结果不理想的问题。所述方法包括下列步骤:获取地图的第一缩放中心点(S110);获取所述第一缩放中心点周边预定范围内的资源分布信息(S120);根据所述资源分布信息,得出第二缩放中心点(S130);基于所述第二缩放中心点,对地图进行缩放(S140)。所述方法基于资源分布来动态调整地图的缩放中心点,不再是简单地以鼠标停留点或者固定中心点作为地图的缩放中心。从而在用户缩放地图的同时优化显示设备上的资源显示,还避免了地图缩放后用户不停拖拽地图来重新定位资源而带来的麻烦。

Description

基于资源分布的地图缩放方法、存储器、控制设备及系统 技术领域
本发明属于地图缩放技术领域,尤其涉及一种基于资源分布的地图缩放方法、存储器、控制设备及系统。
背景技术
基于地图的资源分布信息实时监控在运维系统中是必不可少的。用户可以通过鼠标拖拽和缩放操作来查看地图上不同地区的资源分布的详情。以鼠标拖拽为例,传统的地图缩放方法是依据当前鼠标在地图上停留点或者地图上某个固定中心点,通过滚动鼠标滚轮或者键盘操作来放大或者缩小区域,使用户能够进一步观察到这一区域的资源实时信息。然而这种基于鼠标停留点或者固定中心点的缩放方式存在如下缺陷。
首先,所有区域和资源(如商场、餐饮、公共设施等)针对缩放这一操作的响应都是类似的被动调整过程,即当地图被执行缩放操作后,资源可能被移入或者移出缩放操作后的地图的显示区域。其次,如果显示的资源不满足用户预期,用户往往需要通过一系列基于自身判断的额外的拖拽操作来重新定位缩放中心点进而获得相应的资源,给用户带来极大的不便。
相应地,本领域需要一种新的地图缩放方法来克服上述缺陷。
发明内容
为了解决现有技术中的上述问题,即为了解决基于鼠标停留点或者固定中心点的缩放方式导致的地图显示结果不理想的问题,本发明提供了一种基于资源分布的地图缩放方法。该方法包括下列步骤:获取地图的第一缩放中心点;获取所述第一缩放中心点周边预定范围内的资源分布信息;根据所述资源分布信息,得出第二缩放中心点;基于所述第二缩放中心点,对地图进行缩放。
在上述地图缩放方法的优选实施方式中,所述“获取所述第一缩放中心点周边预定范围内的资源分布信息”的具体步骤包括:以所 述第一缩放中心点为中心绘制中心封闭区;在周边预定范围内,围绕所述封闭区绘制至少一个预选封闭区;获取所述中心封闭区和所述至少一个预选封闭区内的资源分布信息。
在上述地图缩放方法的优选实施方式中,所述“根据所述资源分布信息,得出第二缩放中心点”的具体步骤包括:根据所述资源分布信息,获取所述中心封闭区内的资源数量S (A0),以及获取资源分布最多的所述预选封闭区内的资源数量max s;判断max s和S (A0)是否满足预设条件;如果是,则所述第二缩放中心点为资源分布最多的所述预选封闭区的中心点;如果否,则使所述第一缩放中心点作为所述第二缩放中心点。
在上述地图缩放方法的优选实施方式中,所述“判断max s和S (A0)是否满足预设条件”的具体步骤包括:获取所述中心封闭区和所述预选封闭区内的总资源数量T,并令P1=(max s–S (A0))/T×100;当P 1大于等于预设值时,则max s和S (A0)满足预设条件;当P 1小于预设值时,则max s和S (A0)不满足预设条件。
在上述地图缩放方法的优选实施方式中,所述“根据所述资源分布信息,得出第二缩放中心点”的具体步骤包括:根据所述资源分布信息,获取所述中心封闭区和所述预选封闭区内的资源数量的中位数M和最大的资源数S max;获取所述中心封闭区和所述预选封闭区内的总资源数量T,并令P 2=(S max–M)/T×100;当P 2值大于预设值时,则所述第二缩放中心点为资源分布最多的所述封闭区的中心点,当P 2值小于预设值时,则使所述第一缩放中心点作为所述第二缩放中心点。
在上述地图缩放方法的优选实施方式中,所述“基于所述第二缩放中心点,对地图进行缩放”的步骤包括:在所述第二缩放中心点移动至所述第一缩放中心点之前、同时或之后,以所述第二缩放中心点为中心对地图进行缩放;显示缩放后的地图。
在上述地图缩放方法的优选实施方式中,所述方法还包括显示预处理步骤,所述显示预处理步骤包括:在预设时间内对地图进行多次缩放的情形下,当得出多个第二缩放中心点时,显示根据最后一次得出的第二缩放中心点对地图进行缩放后的地图。
在上述地图缩放方法的优选实施方式中,所述资源为与当前车辆相关联的资源。
在上述地图缩放方法的优选实施方式中,所述资源为充电桩和/或停车位。
本发明还提供了一种存储器,其中存储有多条指令,所述指令由处理器加载并执上述地图缩放方法中的各步骤。
本发明还提供了一种控制设备,所述控制设备包括处理器和存储器,所述存储器存储有多条指令;所述处理器用于实现各所述指令;其中,所述指令由处理器加载并执上述地图缩放方法中的各步骤。
本发明还提供了一种基于资源分布的地图缩放系统,该地图缩放系统包括:输入处理模块,其能够根据输入信息得出地图的第一缩放中心点和缩放比例;缩放处理模块,其能够对所述第一缩放中心点周边预定范围内的资源分布信息进行处理,并基于所述资源分布信息得出第二缩放中心点;显示渲染模块,其能够基于所述第二缩放中心点和所述缩放比例,对地图进行缩放。
在上述地图缩放系统的优选实施方式中,所述的“所述缩放处理模块对所述第一缩放中心点周边预定范围内的资源分布信息进行处理”进一步包括:以所述第一缩放中心点为中心绘制中心封闭区;在周边预定范围内,围绕所述封闭区绘制至少一个预选封闭区;获取所述中心封闭区和所述至少一个预选封闭区内的资源分布信息;根据所述资源分布信息,获取所述中心封闭区内的资源数量S (A0),以及获取资源分布最多的所述预选封闭区内的资源数量max s;判断max s和S (A0)是否满足预设条件;如果是,则所述第二缩放中心点为资源分布最多的所述预选封闭区的中心点;如果否,则使所述第一缩放中心点作为所述第二缩放中心点。
在上述地图缩放系统的优选实施方式中,所述显示渲染模块对地图进行缩放的过程包括:将第二缩放中心点移至所述第一缩放中心点;以所述第二缩放中心点为中心对地图进行缩放。
在上述地图缩放系统的优选实施方式中,所述系统还包括显示预处理模块,所述预处理模块用于:在预设时间内对地图进行多次缩放的情形下,当得出多个第二缩放中心点时,显示根据最后一次得出的第二缩放中心点对地图进行缩放后的地图。
在上述地图缩放系统的优选实施方式中,所述资源为与当前车辆相关联的资源。
在上述地图缩放系统的优选实施方式中,所述资源为充电桩和/或停车位。
在本发明的技术方案中,基于资源分布来动态调整地图的缩放中心点,不再是简单地以鼠标停留点或者固定中心点作为地图的缩放中心。从而在用户缩放地图的同时优化显示设备上的资源显示,还避免了地图缩放后用户不停拖拽地图来重新定位资源而带来的麻烦。
附图说明
图1本发明的基于资源分布的地图缩放方法的整体流程图;
图2是本发明的基于资源分布的地图缩放方法的地图缩放前的状态示意图;
图3是根据本发明的基于资源分布的地图缩放方法得到的缩放后的地图界面示意图;
图4本发明的基于资源分布的地图缩放系统的结构示意图。
具体实施方式
本发明提供的基于资源分布的地图缩放方法,不再简单地以传统的鼠标停留点或者固定中心点作为缩放中心点进行地图的缩放,而是基于资源的分布,实现用户在缩放地图的同时优化显示设备上的资源显示,从而避免了地图缩放后用户不停拖拽地图来重新定位资源所带来的麻烦。需要指出的是,文中的“资源分布”可以理解为地图上某一区域内分布的如餐饮、商场、公共设施(如ATM、加油站、充电站/桩)等等,也可以是其他能够移动的资源(如共享单车、移动充电车等)。
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是,这些实施方式仅仅用于解释本发明的技术原理,并非旨在限制本发明的保护范围。
如图1所示,基于资源分布的地图缩放方法包括下列步骤:
S110、获取地图的第一缩放中心点;
S120、获取第一缩放中心点周边预定范围内的资源分布信息;
S130、根据资源分布信息,得出第二缩放中心点;
S140、基于第二缩放中心点,对地图进行缩放。
通过上述步骤S110-S140,实现了主动分析当前及邻近区域的资源分布,动态改变地图的缩放中心点的目的。举例而言,当邻近第一缩放中心点的资源分布较少时,此时,以第一缩放中心点为中心将地图放大后,距离第一缩放中心点较远的资源很可能显示在可见区域外(即用户能看到的资源随着地图的放大而变少)。这种情况下,在对地图进行缩放之前,将根据第一缩放中心点周边预定范围内的资源分布信息确定的第二缩放中心点,作为新的缩放中心点对地图进行缩放,以达到优化缩放过程中当前显示设备展示的资源数量的目的。当然,为了达到这一目的,第二缩放中心点还需要满足一定的条件,至少邻近第二缩放中心点的资源分布数量多于邻近第一缩放中心点的资源分布数量。
本领域技术人员容易理解的是,上文中的“第一缩放中心点周边预定范围内”可以理解为根据不同的应用场景,以当前的缩放点为基础,按照地图的比例尺在地图上确定一个区域,如该区域可以是以用户所在的位置为中心,方圆如两公里内的范围;也可以不以用户所在的位置为中心,确定一个包含用户所在位置的区域即可。显然,上述的“两公里”只是一个作为示例性地说明,本领域技术人员可以根据实际应用情形设定不同的范围,如方圆一公里、四公里等,或者将方圆如两公里内的范围替换为如“左右两公里、前后四公里”、“沿着某条公路的前后两公里”等其他形式。
下面分别对步骤S110-S140的具体实施方式进行详细说明。
在步骤S110中,用户通过鼠标、键盘、触摸屏或者手势对地图进行缩放操作时,第一缩放中心点可以是当前鼠标在地图上的停留点或者地图上某个固定中心点,并且还能够根据用户的操作确定地图的缩放比例。
在步骤S120中,第一缩放中心点确定后,以第一缩放中心点为中心绘制中心封闭区;在周边预定范围内,围绕该封闭区绘制至少一个预选封闭区;获取该中心封闭区和该至少一个预选封闭区内的资源分布信息。举例而言,参照图2,图2是本发明的地图缩放中心点的动态调整示意图。如图2所示,以第一缩放中心点C 1为中心绘制一个正六边形A 0;围绕A 0分别绘制六个与正六边形A 0区域相等区域A 1、A 2、A 3、A 4、A 5、A 6,A 0-A 6区域内总的资源数
Figure PCTCN2018075678-appb-000001
其中i=0,1,2,3,4,5,6。图2中的白色圆点为资源点,可知,每个区域的资源数量分别为S (A0)=1, S (A1)=1,S (A2)=0,S (A3)=1,S (A4)=3,S (A5)=8,S (A6)=0,那么A 0-A 6区域内总的资源数T=1+1+0+1+3+8+0=14。
在步骤S130中,根据资源分布信息,得出第二缩放中心点。具体地,继续参照图2,第一缩放中心点所在的区域A 0包含的资源数量S (A0)=1,在A 0-A 6区域内,包含资源数量最多的区域为A 5,该区域的资源数量即为资源分布最多的区域内的资源数量,即max s=8。可以令P1=(max s–S (A0))/T×100,当P 1值大于第一预设值时,计算新的地图缩放中心点;当P 1值不大于第一预设值时,仍然以第一缩放中心点为地图的缩放中心点(也即第二缩放中心点与第一缩放中心点为同一个点)。以图2为例,如将第一预设值设定为30,那么P1=(max s–S (A0))/T×100>30,即P 1值大于第一预设值,因此,本实施例中,将A 5区域的中心点C 2作为第二缩放中心点C 2
需要说明的是,在上述的实施例中,虽然统计区域绘制的是正六边形,但是在使用过程中,该正六边形还可以替换成正方形、矩形甚至一些不规则的图形,只要能够将预设范围的资源分部信息均囊括在内并得出最密集的资源分布信息即可。也就是说,区域形状的上述替换都能得到大致相同的结果,因而均不脱离本发明的保护范围。此外,上文实施例中是基于划分好的区域中,位置和状态相对固定的资源来计算新的中心点。对于位置和状态相对变化的资源,本领域技术人员还可以通过预测评估对不同的区域配置一定的权重,进而针对不同状态的资源分布,按照上述方法同样可以计算出第二缩放中心点。
作为本发明的另一种实施方式,在步骤S130中,还可以按照如下方式计算第二缩放中心点。仍以图2为例,每个区域的资源数量分别为S (A0)=1,S (A1)=1,S (A2)=0,S (A3)=1,S (A4)=3,S (A5)=8,S (A6)=0,统计其中的中位数M(M=Median S (A0),S (A1),…,S (A6))和所有区域中资源数量最大的值S max。其中,中位数(Median)又称中值,在统计学中代表一个样本、种群或概率分布中的一个数值,通过中位数可将数值集合划分为相等的上下两部分。对于有限的数集,可以通过把所有观察值高低排序后(或者从低到高)找出正中间的一个作为中位数。具体而言,如果观察值有偶数个,通常取最中间的两个数值的平均数作为中位数。因此,当封闭区总数n为奇数时,M取数列第(n+1)/2位置的数值;当封闭区总数n为偶数时,M取数列(n/2)位置以及(n/2+1)位 置数值的平均数。在本实施例中,划分的封闭区域的总数为7,将这7个区域内的资源数量按照从小到大的顺序排列好后,取其中间的第四个位置的数值,即M=1。这个7个区域的资源数量的最大值为8,即S max=8。
由于A 0-A 6区域内总的资源数T=1+1+0+1+3+8+0=14。可以令P 2=((S max–M)/T×100,当P 2值大于第二预设值时,计算新的地图缩放中心点;当P 2值不大于第二预设值时,仍然以第一缩放中心点为地图的缩放中心点(也即第二缩放中心点与第一缩放中心点为同一个点)。如将预设值设定为30,那么P 2=((S max–M)/T×100=50>30,即P 2值大于第二预设值,因此,本实施例中,将A 5区域的中心点C 2作为第二缩放中心点C 2
需要说明的是,上述的P1和P2是发明人经过发明人反复试验、观测和比较确定出的两种判断是否进行中心缩放点更新的中间参数,可以理解为无量纲的中间量。
在步骤S140中,基于第二缩放中心点,对地图进行缩放。参照图3,图3是根据本发明的基于资源分布的地图缩放方法得到的缩放后的地图界面的示意图。通过将确定出的资源分布最密集的C 2作为新的地图缩放中心点,方便用户获取资源。当确定C 2作为新的地图缩放中心点后,可以在C 2移动至C 1点之前、同时或之后,以C 2为中心对地图进行缩放。总之,在地图缩放达到稳定状态时,用户最终看到的缩放后的地图界面如图3所示。也就是说,在确定新的缩放中心点后,基于该缩放中心点,可以以任何可实现的缩放形式对地图进行缩放,只要保证最终展示给用户的界面中是以新的缩放中心点确定的界面即可。对本领域技术人员来说,根据缩放中心点即可实现地图的缩放与显示,在此不再进行详细描述。本发明旨在根据资源分布的情况,来获取新的缩放中心点,以实现用户在缩放地图的同时优化显示设备上的资源显示。
在实际应用中,往往会遇到用户连续输入的情况,即地图的缩放中心点随着用户的连续输入可能出现连续变化的情形,比如鼠标滚轮连续滚动导致地图比例持续地做多次调整产生多个不同位置的缩放中心点C 3,C 4,…,C n,如果每次都要以不同的缩放中心点对地图进行缩放,容易引起界面的抖动。为了更好的用户体验,在本发明的方法中,还包括显示预处理步骤。在该显示预处理步骤中,当检测到缩放中心点的连续变化时,暂停显示缩放后的地图,缩放中心点C 1-C n被缓存。当用 户的连续输入结束,根据第一缩放中心点C 1和最新的缩放中心点C n按照比例调整地图并输出到显示设备。这样一来,仅需要对地图进行最终的缩放,有效地避免了界面的抖动。
此外,上文实施例中,通过计算P 1、P 2的大小,再将P 1、P 2与预设值进行比较来确定第二缩放中心点。P 1、P 2的计算方法仅是本发明的优选实施方式,本领域技术人员还可以利用其他的算法来确定第二缩放中心点。也就是说,统计每个区域内的资源数量后,如何确定第二缩放中心点,不限于上文实施例中提到的P 1、P 2算法,按照本发明的思路,对P 1、P 2的算法所作出的改变都属于本发明的保护范围。
此外,本发明的“基于资源分布的地图缩放方法”中的“资源”可以包括所有资源的总和(如第一缩放点周围的商场、餐饮、充电桩、停车位、ATM等资源的汇总),也可以是其中的一部分资源,以便仅针对性地显示用户需求的某种或者某几种特定的资源分布信息,从而进一步提升用户体验。如在一个具体地实施方式中,第一缩放点为车主的当前位置,可以仅针对当前位置附近一定范围内的充电桩或者停车位的数量及其分布情况进行相应的地图缩放。以充电桩为例,基于获取到的充电桩的位置及其分布密度,便于车主确定最佳的补能目的地。
本发明还提供了一种存储器,其中存储有多条指令,该指令由处理器加载并执行上述地图缩放方法中的各步骤。具体可参考上文,在此不再赘述。
此外,本发明还提供了一种控制设备,该控制设备包括处理器和存储器。存储器存储有多条指令;处理器用于实现各指令。其中,该指令由处理器加载并执行上述地图缩放方法中的各步骤。具体可参考上文,在此不再赘述。
另一方面,本发明还提供了一种基于资源分布的地图缩放系统。图4示出本发明的基于资源分布的地图缩放系统的结构示意图。如图4所示,该地图缩放系统包括:输入处理模块,其能够根据输入信息得出地图的第一缩放中心点和缩放比例;缩放处理模块,对第一缩放中心点周边预定范围内的资源分布信息进行处理,基于资源分布信息得出第二缩放中心点;显示渲染模块,基于第二缩放中心点和缩放比例,对地图进行缩放。
具体而言,用户通常通过输入设备(鼠标、键盘、触摸、手势等方式)对地图进行操作,输入设备接受用户的操作并产生相应的事件传递给用户处理单元,输入处理模块根据输入的事件推断本次操作的地图缩放中心点坐标(第一缩放中心点)和缩放的比例。通常将当前鼠标在地图上的停留点或者地图上某个固定中心点。缩放处理模块对第一缩放中心点周边预定范围内的资源分布信息进行处理,基于资源分布信息得出第二缩放中心点。计算第二缩放中心点的过程参考上文中的步骤S120和步骤S130,在此不再赘述。
显示渲染模块能够基于第二缩放中心点和缩放比例,对地图进行缩放。显示渲染模块可以将地图移动至第二缩放中心点,按照缩放比例对地图进行缩放操作。也可以将C 2移动至C 1的位置,然后对地图进行缩放并渲染界面,并将最终缩放后的地图显示给用户。为了达到更好地显示效果,显示渲染模块还可以动态改变地图的其它属性(如增加或减小局部区域的比例尺,从而增加资源较多的区域的显示面积)。最终显示的地图可以通过输出设备进行显示。输出设备可以是屏幕,也可以是3D、AR、VR等显示设备。
在该系统中,显示渲染模块主要负责平滑地调整地图缩放过程,比如设定过渡效果使第二缩放中心点C 2移动至第一缩放中心点C 1,然后对地图进行缩放并重新渲染界面。在实际操作过程中往往会遇到用户连续输入的情况,比如鼠标滚轮连续滚动导致地图比例持续地做多次调整产生多个不同位置的缩放中心点,而引起界面的抖动。为了更好的用户体验,该系统还包括显示预处理模块,该显示预处理模块可是单独的模块也可以集成在显示渲染模块中。当该显示预处理模块检测到缩放中心点的连续变化时,暂停到显示设备的输出,缩放中心点被缓存。当用户的连续输入结束,显示渲染模块依据第一缩放中心点和最新确定的缩放中心点按照比例调整地图并输出到显示设备。
综上所述,本发明基于资源分布来动态调整地图的缩放中心点,不再是简单地以鼠标停留点或者固定中心点作为地图的缩放中心。从而在用户缩放地图的同时优化显示设备上的资源显示,还避免了地图缩放后用户不停拖拽地图来重新定位资源而带来的麻烦。
至此,已经结合附图所示的优选实施方式描述了本发明的技术方案,但是,本领域技术人员容易理解的是,本发明的保护范围显然 不局限于这些具体实施方式。在不偏离本发明的原理的前提下,本领域技术人员可以对相关技术特征作出等同的更改或替换,这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (17)

  1. 一种基于资源分布的地图缩放方法,其特征在于,该方法包括下列步骤:
    获取地图的第一缩放中心点;
    获取所述第一缩放中心点周边预定范围内的资源分布信息;
    根据所述资源分布信息,得出第二缩放中心点;
    基于所述第二缩放中心点,对地图进行缩放。
  2. 根据权利要求1所述的地图缩放方法,其特征在于,所述“获取所述第一缩放中心点周边预定范围内的资源分布信息”的具体步骤包括:
    以所述第一缩放中心点为中心绘制中心封闭区;
    在周边预定范围内,围绕所述封闭区绘制至少一个预选封闭区;
    获取所述中心封闭区和所述至少一个预选封闭区内的资源分布信息。
  3. 根据权利要求2所述的地图缩放方法,其特征在于,所述“根据所述资源分布信息,得出第二缩放中心点”的具体步骤包括:
    根据所述资源分布信息,获取所述中心封闭区内的资源数量
    Figure PCTCN2018075678-appb-100001
    以及获取资源分布最多的所述预选封闭区内的资源数量max s
    判断max s
    Figure PCTCN2018075678-appb-100002
    是否满足预设条件;
    如果是,则所述第二缩放中心点为资源分布最多的所述预选封闭区的中心点;
    如果否,则使所述第一缩放中心点作为所述第二缩放中心点。
  4. 根据权利要求3所述的地图缩放方法,其特征在于,所述“判断max s
    Figure PCTCN2018075678-appb-100003
    是否满足预设条件”的具体步骤包括:
    获取所述中心封闭区和所述预选封闭区内的总资源数量T,并令
    Figure PCTCN2018075678-appb-100004
    当P 1大于等于第一预设值时,则max s
    Figure PCTCN2018075678-appb-100005
    满足预设条件;
    当P 1小于第一预设值时,则max s
    Figure PCTCN2018075678-appb-100006
    不满足预设条件。
  5. 根据权利要求2所述的地图缩放方法,其特征在于,所述“根据 所述资源分布信息,得出第二缩放中心点”的具体步骤包括:
    根据所述资源分布信息,获取所述中心封闭区和所述预选封闭区内的资源数量的中位数M和最大的资源数S max
    获取所述中心封闭区和所述预选封闭区内的总资源数量T,并令P 2=(S max–M)/T×100;
    当P 2值大于等于第二预设值时,则所述第二缩放中心点为资源分布最多的所述封闭区的中心点;
    当P 2值小于第二预设值时,则使所述第一缩放中心点作为所述第二缩放中心点。
  6. 根据权利要求1所述的地图缩放方法,其特征在于,“基于所述第二缩放中心点,对地图进行缩放”的步骤包括:
    在所述第二缩放中心点移动至所述第一缩放中心点之前、同时或之后,以所述第二缩放中心点为中心对地图进行缩放;
    显示缩放后的地图。
  7. 根据权利要求1至6中任一项所述的地图缩放方法,其特征在于,所述方法还包括显示预处理步骤,所述显示预处理步骤包括:
    在预设时间内对地图进行多次缩放的情形下,当得出多个第二缩放中心点时,显示根据最后一次得出的第二缩放中心点对地图进行缩放后的地图。
  8. 根据权利要求1至6中任一项所述的地图缩放方法,其特征在于,所述资源为与当前车辆相关联的资源。
  9. 根据权利要求8所述的地图缩放方法,其特征在于,所述资源为充电桩和/或停车位。
  10. 一种存储器,其中存储有多条指令,其特征在于,所述指令由处理器加载并执行权利要求1至9中任一项所述的地图缩放方法中的各步骤。
  11. 一种控制设备,其特征在于,所述控制设备包括处理器和存储器,
    所述存储器存储有多条指令;
    所述处理器用于实现各所述指令;
    其中,所述指令由处理器加载并执行权利要求1至8中任一项所述的地图缩放方法中的各步骤。
  12. 一种基于资源分布的地图缩放系统,其特征在于,该地图缩放系统包括:
    输入处理模块,其能够根据输入信息得出地图的第一缩放中心点和缩放比例;
    缩放处理模块,其能够对所述第一缩放中心点周边预定范围内的资源分布信息进行处理,并基于所述资源分布信息得出第二缩放中心点;
    显示渲染模块,其能够基于所述第二缩放中心点和所述缩放比例,对地图进行缩放。
  13. 根据权利要求12所述的地图缩放系统,其特征在于,所述的“所述缩放处理模块对所述第一缩放中心点周边预定范围内的资源分布信息进行处理”进一步包括:
    以所述第一缩放中心点为中心绘制中心封闭区;
    在周边预定范围内,围绕所述封闭区绘制至少一个预选封闭区;
    获取所述中心封闭区和所述至少一个预选封闭区内的资源分布信息;
    根据所述资源分布信息,获取所述中心封闭区内的资源数量
    Figure PCTCN2018075678-appb-100007
    以及获取资源分布最多的所述预选封闭区内的资源数量max s
    判断max s
    Figure PCTCN2018075678-appb-100008
    是否满足预设条件;
    如果是,则所述第二缩放中心点为资源分布最多的所述预选封闭区的中心点;
    如果否,则使所述第一缩放中心点作为所述第二缩放中心点。
  14. 根据权利要求12所述的地图缩放系统,其特征在于,所述显示渲染模块对地图进行缩放的过程包括:
    将第二缩放中心点移至所述第一缩放中心点;
    以所述第二缩放中心点为中心对地图进行缩放。
  15. 根据权利要求12至14中任一项所述的地图缩放系统,其特征在于,所述系统还包括显示预处理模块,所述预处理模块用于:
    在预设时间内对地图进行多次缩放的情形下,当得出多个第二缩放中心点时,显示根据最后一次得出的第二缩放中心点对地图进行缩放后的地图。
  16. 根据权利要求12至14中任一项所述的地图缩放系统,其特征在于,所述资源为与当前车辆相关联的资源。
  17. 根据权利要求16所述的地图缩放系统,其特征在于,所述资源为充电桩和/或停车位。
PCT/CN2018/075678 2017-05-16 2018-02-07 基于资源分布的地图缩放方法、存储器、控制设备及系统 WO2018210013A1 (zh)

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