CN114461742A - Electronic map scale determining method and device, electronic equipment and storage medium - Google Patents
Electronic map scale determining method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for determining a scale of an electronic map, electronic equipment and a storage medium. The method for determining the scale of the electronic map comprises the following steps: monitoring the positioning position; based on the positioning position, acquiring a reference point in the electronic map to be rendered along a navigation route; and determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference points. In the scheme of the embodiment of the invention, the reference point reflects the reliable visual field of the map to be rendered along the navigation route of the positioning position, the rendering scale is determined based on the rendering parameters related to the map scene corresponding to the reference point, and the rendering scale matched with the map scene is obtained, so that the visual field of the map scene is ensured.
Description
Technical Field
The embodiment of the invention relates to the technical field of map rendering, in particular to a method and a device for determining a scale of an electronic map, electronic equipment and a storage medium.
Background
The scale of the electronic map is the ratio of the length of a line segment in the electronic map to the length of a corresponding line segment in the real world after horizontal projection, and represents the zoom degree of the electronic map. Generally, the larger the map scale is, the smaller the geographical area range of the electronic map is, whereas the smaller the map scale is, the larger the geographical area range of the electronic map is.
However, in the current rendering process of the electronic map, a specific scale is often adopted, so that the view of the electronic map cannot be guaranteed, for example, in the electronic map, the view that a user desires to see is not shown.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a method, an apparatus, an electronic device, and a storage medium for determining a scale of an electronic map, so as to solve or alleviate the above problems.
According to a first aspect of the embodiments of the present invention, there is provided a method for determining a scale of an electronic map, including: monitoring the positioning position; based on the positioning position, acquiring a reference point in the electronic map to be rendered along a navigation route; and determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference points.
In other implementations of the invention, the reference point is a position point of the navigation route that is located in front of the location position and corresponds to a navigation guidance action closest to the location position. The determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises: acquiring the distance from the positioning position to a position point corresponding to the navigation guiding action; determining a map display range of the action scene based on the distance; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other implementations of the invention, the determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point includes: determining a map display range of a ramp scene based on the positioning position and the exit position; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the full view of the ramp in the map display range on the screen.
In other implementations of the invention, the reference point is an electronic eye position in the navigation route located in front of the location position. The determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises: determining a map display range of an electronic eye scene based on the positioning position and the electronic eye position or road attribute information of a road where the electronic eye position is located; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other implementations of the invention, the reference point is a congestion location in the navigation route that is located ahead of the location position. The determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises: determining a map display range of a congestion scene based on the positioning position and the congestion position; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other implementations of the invention, the determining a map display range of a congestion scene based on the positioning location and the congestion location includes: and determining the map display range of the congestion scene based on the distance between the positioning position and the congestion position and/or the road grade of the road where the congestion position is located.
In other implementations of the invention, the reference point is an end position of the navigation route that is located in front of the location position. The determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises: determining a map display range of an end point scene based on the positioning position and the end point position, so that each position point between the positioning position and the end point position is included in the map display range; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other implementation manners of the present invention, the reference point is road attribute information of a road where the positioning location is located in the navigation route. The determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises: determining a map display range of a road attribute scene based on the road attribute information; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other implementations of the invention, the obtaining a reference point in the electronic map to be rendered along the navigation route based on the positioning position includes: and when the reference point of the electronic map to be rendered is acquired along the navigation route of the positioning position, judging that the scene effective condition of the map scene is met. The method further comprises the following steps: and entering a map scene corresponding to the reference point according to the scene effective condition.
In other implementations of the invention, the method further comprises: determining an effective distance range of a map scene based on a distance of the positioning position from the reference point, wherein the positioning position is within the effective distance range in the map scene.
According to a second aspect of the embodiments of the present invention, there is provided a scale determining apparatus of an electronic map, including: the monitoring module monitors the positioning position; the acquisition module is used for acquiring a reference point in the electronic map to be rendered along a navigation route based on the positioning position; and the determining module is used for determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point.
According to a fifth aspect of embodiments of the present invention, there is provided an electronic apparatus, the apparatus including: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus; the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the corresponding operation of the method according to the first aspect.
According to a sixth aspect of embodiments of the present invention, there is provided a storage medium having stored thereon a computer program which, when executed by a processor, implements the method according to the first aspect.
In the scheme of the embodiment of the invention, the reference point reflects the reliable visual field of the map to be rendered along the navigation route of the positioning position, the rendering scale is determined based on the rendering parameters related to the map scene corresponding to the reference point, and the rendering scale matched with the map scene is obtained, so that the visual field of the map scene is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present invention, and it is also possible for a person skilled in the art to obtain other drawings based on the drawings.
Fig. 1 is a schematic diagram of an example electronic map rendering principle.
Fig. 2 is a schematic flow chart of a scale determination method of an embodiment of the present invention.
Fig. 3 is a schematic flow chart of a rendering method according to an example corresponding to the embodiment of fig. 1 of the present invention.
Fig. 4 is a schematic block diagram of a scale determining apparatus according to another embodiment of the present invention.
Fig. 5 is a hardware configuration of an electronic device according to another embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention shall fall within the scope of the protection of the embodiments of the present invention.
The following further describes specific implementation of the embodiments of the present invention with reference to the drawings.
Fig. 1 is a schematic diagram of an example electronic map rendering principle. In fig. 1, a vehicle 110 such as a vehicle travels in a road, and the vehicle 110 may be provided with an electronic device 120 such as a cellular phone or a car machine. The vehicle 110 is in the map display range 130, accordingly, the electronic device 120 may have application software of an electronic map function installed therein, and a service end of the application software may perform data communication, for example, map data communication, with the electronic device through a communication connection such as the internet, a mobile network, or the like.
The electronic device 120 may be configured with a positioning function, for example, a positioning device such as a GPS is provided on the electronic device. The electronic device may be carried by the user itself to provide navigation for the user, or the electronic device may be located at the vehicle to provide navigation based on the vehicle 110 for the user.
Specifically, the electronic device 120 is disposed on the vehicle 110, the position a of the electronic device 120 also reflects the position a of the vehicle 110, and the map display range 130 is rendered and displayed on the screen of the electronic device 120 based on a rendering scale set in advance, in other words, each map element within the map display range 130 is rendered onto the screen of the electronic device 120, and the map display range 130 may correspond to the shape of the screen.
The map display range 130 further includes a location B, which may be a location in the navigation route in the application software, or other locations outside the navigation route in the map display range 130. The user of the electronic device 120 can make a determination while traveling by observing the location B while the vehicle 110 is traveling.
Fig. 2 is a schematic flow chart of a scale determination method of an embodiment of the present invention. The present embodiment may be performed by any suitable electronic device having data processing capabilities, including but not limited to: a mobile terminal such as a cell phone, car machine, or other electronic device with data processing capabilities, e.g., electronic device 120 in fig. 1.
The scale determining method of fig. 1 includes:
s210: and monitoring the positioning position.
It should be understood that the positioning position indicates a position of the electronic device based on the frame of reference, and in the case where the positioning device is installed in the electronic device, the positioning device functions as a sensor, and the positioning position of the electronic device is directly obtained. The location position of the electronic device may also be obtained indirectly by performing an analysis based on a communication signal with the electronic device. The frame of reference may be a two-dimensional or three-dimensional system, such as a terrestrial secondary frame of reference, a local three-dimensional frame of reference, a world three-dimensional frame of reference, and the like. The location position may be monitored in real time or periodically. The location position indicates a user position of the electronic device or a position of a vehicle in which the electronic device is provided. In the case where the vehicle is a vehicle, the location position may be referred to as a emblem position.
It is also understood that the location position of the electronic device may be obtained directly or indirectly by a locating device mounted on the electronic device. The electronic equipment obtains electronic map rendering data from a server of the application software and renders the electronic map rendering data into a screen of the electronic equipment.
In one example, the application software obtains a positioning location from the positioning device, the map display range includes the positioning location, and is determined based on the positioning location, whereupon the electronic device renders into a screen of the electronic device electronic map rendering data for the map display range.
In another example, the electronic device stores electronic map rendering data of application software in advance, and renders the electronic map rendering data into a screen of the electronic device, wherein a map display range of the electronic map rendering data may or may not include a positioning position. When the map display range includes the positioning position, individual map elements within the map display range may be rendered based on the relative position of the positioning position within the map display range and the rendering scale.
It should also be understood that map elements include road elements adjacent to the navigation route, such as road identification elements, road segment elements, road infrastructure elements, and the like. The map elements may also include elements surrounding the navigation route, for example, building elements such as buildings, elements such as stores, building usage elements. The map elements may also include elements related to traffic events, such as congestion event identification elements, traffic accident identification elements, and the like.
S220: and acquiring a reference point in the electronic map to be rendered along the navigation route based on the positioning position.
It should be understood that the navigation route may be an abstract movement trajectory representing a vehicle, such as a vehicle, in a road, for example, an abstract trajectory formed by connecting various passing road segments in the road. A localized position of the electronic device, e.g., a emblem position, can be monitored based on the navigation route. The navigation route in the text can be generated by route data issued by a server of application software. The navigation route may be constituted corresponding to at least one link, for example, the navigation route is constituted by a plurality of links connected to each other. The localized position corresponds to a location in the navigation route, which may be located in or near the road on which such location is located.
It will also be appreciated that the reference point may indicate the location of some map element, for example, the reference point may be a location in a road where the navigation route is located, or may be other locations near the road where the navigation route is located, for example, locations corresponding to road infrastructure.
S230: and determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point.
It is to be appreciated that the map scene corresponding to the reference point can be entered after the reference point is obtained, and in one example, the map scene corresponding to the reference point is entered from the map scene before the reference point is obtained, for example, rendering is performed based on a rendering scale of the map scene before the reference point is obtained. In another example, the electronic device does not render based on the map scene before the reference point is acquired, e.g., the electronic device may render based on a preset rendering scale.
It should also be understood that a map scene refers to a scene that is related to a presentation view of an electronic map, and the required presentation view is different for different map scenes, e.g., some map scenes require map elements that are required to present such a scene, in other words, map elements that are necessary for such a map scene. As another example, some map scenes require a larger field of view, providing a better navigation experience. For another example, some map scenes may need to show more map detail, close up an area, in which case a smaller field of view is shown to compromise the map detail based on the limited screen size of the electronic device.
Some examples of map scenarios are given below.
In some examples, the division of the map scene may be based on a reference point, the setting of the reference point may be flexible, different map scenes may be determined based on the reference point, and accordingly, the map rendering is performed based on the rendering scale of each area. For example, the reference points indicate different areas of the navigation route. For example, the reference point may indicate a location of a traffic event element. As another example, the reference point may indicate a location of a road in the navigation route, or a location in a particular road, e.g., an intersection location, a ramp location. As another example, the reference point may indicate a location of a construction element, such as an electronic eye location. As another example, the reference point indicates a target position in the navigation route, such as an end position or a start position.
In other examples, the partitioning of the map scene may also be based on attributes of the map elements, such as road grade of the road elements, road geometry, building height of the building elements, and so on.
It should also be understood that the rendering scale herein may indicate the degree of map zoom in and out, in other words, the rendering scale reflects the size of the display field of view. The rendering scale also reflects the display degree of the map details, and within a given map element density range, the larger the rendering scale, the more the map details.
In the scheme of the embodiment of the invention, the reference point reflects the reliable visual field of the map to be rendered along the navigation route of the positioning position, the rendering scale is determined based on the rendering parameters related to the map scene corresponding to the reference point, and the rendering scale matched with the map scene is obtained, so that the visual field of the map scene is ensured.
Fig. 3 is a schematic flow chart of a rendering method according to an example corresponding to the embodiment of fig. 1 of the present invention. The rendering method of fig. 3 includes the steps of:
s310: and monitoring the positioning position.
S320: and acquiring a reference point in the electronic map to be rendered along the navigation route based on the positioning position.
S330: a map display range of a map scene is determined.
S340: and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size. Specifically, the size of the map display range after matching may be calculated by matching the relationship between the map display range and the screen size, and then, the ratio between the size after matching and the real size corresponding to the map display range is calculated as the scale.
S350: and determining the effective distance range of the map scene based on the distance between the positioning position and the reference point. Specifically, in the map scene, the localization position is within the effective distance range.
S360: map elements of a map display range are displayed in a screen in a map scene based on a rendering scale. In particular, the process of displaying the map display range may be a process of dynamic display, which is reflected on the one hand in that the map display range corresponds to different real geographical areas, and on the other hand in that the dynamic display is also reflected in changes in the scale. In addition, the rendering scale before the map scene may be different from the rendering scale after the map scene is entered, and while the map elements of the map display range are displayed in the screen, the rendering scale after the dynamic adjustment may also be displayed in the screen. In addition, in the screen, special effects of the current map scene can also be displayed, for example, elements closely related to the map scene within the map display range are highlighted.
The scale determining method according to an embodiment of the present invention will be further illustrated and described below with reference to examples of respective map scenes.
The map scene in the text includes, but is not limited to, a vehicle action scene, a ramp scene, a congestion scene, an electronic eye scene, an end point scene, a road grade scene, and the like.
In other examples, the reference point is a location point in the navigation route that is forward of the location position and corresponds to a navigation guidance action that is closest to the location position. For example, the navigation guidance action includes at least one of turning the vehicle around, turning a corner, and moving straight. The position point corresponding to the navigation guiding action may be a position in a segment of the navigation route, for example, an end of the segment or an intersection of the segment, and the vehicle performs the corresponding navigation guiding action.
Further, when the navigation guidance action is executed or before the navigation guidance action is executed, the vehicle reaches a position point corresponding to the navigation guidance action, and accordingly enters a map scene corresponding to the navigation guidance action, that is, an action scene. For example, when the vehicle is at a preset distance from the positioning position to the position point, the vehicle enters a corresponding action scene. The preset distance may have a preset distance value or a proportion positively correlated with the length or width of the road section. For example, the vehicle enters a turning action scene 500 meters away from the end of the road segment.
Determining a rendering scale based on rendering parameters related to a map scene corresponding to the reference point, including: acquiring the distance from the positioning position to a position point corresponding to the navigation guiding action; determining a map display range of the action scene based on the distance; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen. Because the map display range of the action scene is determined based on the distance from the positioning position to the position point corresponding to the navigation guiding action, the map display range comprises the visual field required by the navigation guiding action, and the navigation efficiency is improved.
Specifically, when the rendering scale is calculated, the distance from the positioning position to the position point corresponding to the navigation guidance operation is covered in the map display range, and for example, a connection line between the positioning position and the navigation guidance operation is constructed and matched in the map display range.
In other examples, the reference point is an exit position of a ramp in the navigation route that is forward of and closest to the location position. Specifically, the effective condition of the ramp scene may be a specific road shape indicated by the road shape information of the road on which the vehicle is located, for example, the curvature of the road. For example, when the road shape of the road on which the vehicle is located meets a preset shape condition, a ramp scene is triggered, and accordingly, the positioning position of the vehicle and the map display range defined by the reference point are calculated. More specifically, when the curvature of the road on which the vehicle is located satisfies the preset curvature condition, the map display range may be determined based on the circumscribed rectangle of the navigation route between the location position of the vehicle and the reference point and the map display direction, for example, while the map display direction is ensured, a minimum circumscribed rectangle is determined as the map display range, where the minimum circumscribed rectangle is a similar rectangle to the screen of the electronic device.
Further, determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point, including: determining a map display range of the ramp scene based on the positioning position and the exit position; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the ramp in the map display range in a full view on the screen. That is, from the beginning of the vehicle entering the ramp, the current position to the point where the ramp scene ends are all completely placed within the screen. And the calculated rendering scale ensures that the ramp is maximally viewed in the range of a displayable screen of the electronic equipment. The map display range of the ramp scene is determined based on the positioning position and the exit position, so that the map display range of the ramp scene includes a view field required for the vehicle to drive away from the ramp, and the navigation efficiency is improved.
In other examples, the electronic eye may refer to a photographing device provided in a road monitoring section, for example, a photographing device that indicates speed limit, emergency, speed measurement of a section, line pressing, and the like. The electronic eye scene comprises a single electronic eye and a plurality of electronic eyes, wherein the single electronic eye is arranged in a road monitoring section. The multiple electronic eyes refer to an electronic eye array provided on a vehicle travel route for more accurately estimating a vehicle travel state such as a vehicle speed.
The reference point is the position of the electronic eye in the navigation route in front of the location position. For example, in the case of multiple electronic eyes, the reference point may be the position of a target electronic eye (e.g., the farthest electronic eye) in front of the location position.
Further, the validation condition of the electronic eye scene may be that the road attribute information satisfies a preset condition, for example, at least one of a road shape or a road grade satisfies the preset condition. The effective condition of the electronic eye scene may be that at least one electronic eye is present in the road where the localization position is located.
Further, determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point, including: determining a map display range of an electronic eye scene based on the positioning position and the electronic eye position or road attribute information of a road where the electronic eye position is located; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen. The map display range is determined based on the positioning position and the electronic eye position or the road attribute information of the road where the electronic eye position is located, so that the map display range comprises the visual field required by the electronic eye-guided driving operation, and the navigation efficiency is improved. The road attribute information of the road where the electronic eye position is located includes at least one of a road grade and a road curvature, and the electronic eye guiding driving operation also depends on the road attribute information, for example, the higher the road grade is, the higher the driving safety requirement is, the higher the road curvature is, the higher the driving safety requirement is, and meanwhile, the larger the required map display range is, the map display range is determined through the road attribute information, so that the view field required by the electronic eye guiding driving operation is further improved.
In addition, the electronic eye scene includes a single-electron eye case and a multiple-electron eye case. In the case of a single-electron eye, the map display range may be determined based on the road attribute information. In the case of multiple electronic eyes, the map display range may be a range defined by both the localization position and the position of the target electronic eye.
In other examples, in a congested scene, a section of the navigation route may indicate that the route is slow to travel or clear, and when rendered, the roads or segments involved in the congested scene may be displayed in a first color (e.g., red or yellow) and clear may be displayed in a second color (e.g., green).
At this time, the reference point is a congestion position located in front of the localization position in the navigation route. Specifically, the congestion position may be a position of a congestion range where the congestion event is located on the road, for example, a position closest to the positioning position in the congestion range, a position farthest from the positioning position in the congestion range, or another position in the congestion range.
It should be appreciated that the application software of the electronic device triggers entry into the congestion scenario when the validation condition for the congestion scenario is satisfied. Specifically, the effective condition for the congestion scene may be a normal location condition. For example, the effective position range of the congestion scene, that is, the start position and the end position at which the congestion scene is effective may be determined based on the traveling speed of the vehicle, and/or the road attribute information. More specifically, the effective location range of the congestion scene may be determined based on a reference point, e.g., a starting location being a first effective distance from the reference point and an ending location being a second effective distance from the reference point. Thus, the view under the congested scene is ensured.
Further, determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point, including: determining a map display range of a congestion scene based on the positioning position and the congestion position; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen. The map display range of the congestion scene is determined based on the positioning position and the congestion position, and the view field required by the driver of the congestion scene is included, so that the navigation efficiency is improved.
Further, determining a map display range of the congestion scene based on the positioning position and the congestion position comprises: and determining the map display range of the congestion scene based on the distance between the positioning position and the congestion position and/or the road grade of the road where the congestion position is located. The distance between the positioning position and the congestion position enables the visual field of the rendered map to include the congestion position, the road grade of the congestion position can reflect the severity of the congestion event corresponding to the congestion position, and the navigation efficiency is improved. In one example, the higher the road grade of the road where the congestion position is located is, the smaller the map display range is, and accordingly, the larger the rendering scale is, and the navigation efficiency is further improved.
In other examples, the reference point is an end position in the navigation route that is located in front of the position location. Determining a rendering scale based on rendering parameters related to a map scene corresponding to the reference point, including: determining a map display range of the terminal scene based on the positioning position and the terminal position, so that each position point between the positioning position and the terminal position is included in the map display range; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen. The map display range comprises each position point between the positioning position and the terminal position, so that the required view when the vehicle arrives at the terminal and before the vehicle arrives is met, valuable map information such as parking positions of drivers is facilitated, and the navigation efficiency is improved.
In other examples, the reference point is road attribute information of a road in the navigation route where the location is located. Specifically, the road attribute information includes at least one of road type information, road grade information, and road shape information. For example, road grade information includes, but is not limited to, national roads, rural roads, express roads, urban expressways, and the like. Road types include, but are not limited to, ramp approaches, viaducts, exits, entrances, turn-by-turn lanes, roundabouts, and the like. The road shape information may include angle information of the road, curvature information of the road, and the like. The curvature information of the road may indicate a degree of curvature of the road segment or sub-road segment, and may be calculated from a plurality of points on the road segment or sub-road segment.
Determining a rendering scale based on rendering parameters related to a map scene corresponding to the reference point, including: determining a map display range of a road attribute scene based on the road attribute information; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen. The map display range is determined based on road attribute information including at least one of road grade information and road size information, so that when a vehicle runs on a road with different road attributes, a field of view required by a driver is provided, and navigation efficiency is improved.
In other examples, obtaining a reference point in the electronic map to be rendered along the navigation route based on the positioning location includes: when a reference point of the electronic map to be rendered is acquired along the navigation route of the positioning position, a scene effective condition meeting the map scene is judged, and the scene effective condition is used for triggering the electronic map to enter the map scene corresponding to the reference point.
It is further understood that an effective distance range for a map scene is determined based on the distance of the position location from the reference point, wherein in the map scene the position location is within the effective distance range. For each map scene, the validation condition for the map scene may be a valid location condition. For example, the effective position range of the map scene, i.e., the start position and the end position at which the map scene is effective, may be determined based on the traveling speed of the vehicle, and/or the road attribute information. In one example, the effective location range of the map scene may be determined based on a reference point, e.g., the starting location being a first effective distance from the reference point and the ending location being a second effective distance from the reference point. In another example, the start position and the end position may be determined by a road reference position of a road on which the reference point is located, e.g., the start position may be a section start point of a section of the road on which the reference point is located, and the end position may be a section end point of the section of the road on which the reference point is located, e.g., in a map scene such as a single-electron-eye situation in an electron-eye scene or a road grade scene.
In some cases, the first effective distance or the second effective distance is 0, i.e., the reference point is the starting location or the ending location. For example, in a map scene such as an end point scene, the reference point itself is the end position.
It is also understood that, in calculating the rendering scale, the map display range may be determined based on a circumscribed rectangle of the navigation route between the localization position of the vehicle and the reference point and the map display direction, for example, a minimum circumscribed rectangle may be determined as the map display range while ensuring the map display direction, wherein the minimum circumscribed rectangle is a similar rectangle to the screen of the electronic device.
Fig. 4 is a schematic block diagram of a scale determining apparatus of an electronic map according to another embodiment of the present invention. The present embodiment may be performed by any suitable electronic device having data processing capabilities, including but not limited to: a mobile terminal such as a cell phone, car machine, or other electronic device with data processing capabilities, e.g., electronic device 120 in fig. 1.
The scale determining apparatus of the present embodiment includes:
and a monitoring module 410 for monitoring the positioning position.
And the obtaining module 420 is used for obtaining a reference point in the electronic map to be rendered along the navigation route based on the positioning position.
And the determining module 430 determines a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point.
In the scheme of the embodiment of the invention, the reference point reflects the reliable visual field of the map to be rendered along the navigation route of the positioning position, the rendering scale is determined based on the rendering parameters related to the map scene corresponding to the reference point, and the rendering scale matched with the map scene is obtained, so that the visual field of the map scene is ensured.
In other examples, the reference point is a position point of the navigation route that is located in front of the location position and corresponds to a navigation guidance action closest to the location position. The determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises: acquiring the distance from the positioning position to a position point corresponding to the navigation guiding action; determining a map display range of the action scene based on the distance; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other examples, the reference point is an exit position of a ramp in the navigation route located before and closest to the positioning position, and the determining a rendering scale based on the rendering parameter associated with the map scene corresponding to the reference point includes: determining a map display range of a ramp scene based on the positioning position and the exit position; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the full view of the ramp in the map display range on the screen.
In other examples, the reference point is an electronic eye position in the navigation route in front of the location position. The determination module is specifically configured to: determining a map display range of an electronic eye scene based on the positioning position and the electronic eye position or road attribute information of a road where the electronic eye position is located; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other examples, the reference point is a congestion location in the navigation route that is located ahead of the location position. The determination module is specifically configured to: determining a map display range of a congestion scene based on the positioning position and the congestion position; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other examples, the determining module is specifically configured to: and determining the map display range of the congestion scene based on the distance between the positioning position and the congestion position and/or the road grade of the road where the congestion position is located.
In other examples, the reference point is an end position of the navigation route that is forward of the location position. The determination module is specifically configured to: determining a map display range of an end point scene based on the positioning position and the end point position, so that each position point between the positioning position and the end point position is included in the map display range; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other examples, the reference point is road attribute information of a road on which the location position is located in the navigation route. The determination module is specifically configured to: determining a map display range of a road attribute scene based on the road attribute information; and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
In other examples, the obtaining module is specifically configured to: and when the reference point of the electronic map to be rendered is acquired along the navigation route of the positioning position, judging that the scene effective condition of the map scene is met. The scale determining apparatus further includes: and the scene generation module enters a map scene corresponding to the reference point according to the scene effective condition.
In other examples, the determining module is specifically configured to: determining an effective distance range of a map scene based on a distance of the positioning position from the reference point, wherein the positioning position is within the effective distance range in the map scene.
The apparatus of this embodiment is used to implement the corresponding method in the foregoing method embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described herein again. In addition, the functional implementation of each module in the apparatus of this embodiment can refer to the description of the corresponding part in the foregoing method embodiment, and is not described herein again.
Fig. 5 is a hardware configuration of an electronic device according to another embodiment of the present invention; as shown in fig. 5, the hardware structure of the electronic device may include: a processor 501, a communication interface 502, a storage medium 503, and a communication bus 504;
the processor, the communication interface and the storage medium complete mutual communication through a communication bus;
optionally, the communication interface may be an interface of a communication module;
the processor may be specifically configured to: monitoring the positioning position; based on the positioning position, acquiring a reference point in the electronic map to be rendered along a navigation route; and determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference points.
The Processor may be a general-purpose Processor, and includes a Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage medium may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Read Only Memory (EPROM), an electrically Erasable Read Only Memory (EEPROM), and the like.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a storage medium, the computer program comprising program code configured to perform the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication section, and/or installed from a removable medium. The computer program, when executed by a processing unit (CPU), performs the above-described functions defined in the method of the present invention. It should be noted that the storage medium of the present invention can be a computer-readable signal medium or a computer-readable storage medium or any combination of the two. The storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access storage media (RAM), a read-only storage media (ROM), an erasable programmable read-only storage media (EPROM or flash memory), an optical fiber, a portable compact disc read-only storage media (CD-ROM), an optical storage media piece, a magnetic storage media piece, or any suitable combination of the foregoing. In the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any storage medium that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
Computer program code configured to carry out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may operate over any of a variety of networks: including a Local Area Network (LAN) or a Wide Area Network (WAN) -to the user's computer, or alternatively, to an external computer (e.g., through the internet using an internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions configured to implement the specified logical function(s). In the above embodiments, specific precedence relationships are provided, but these precedence relationships are only exemplary, and in particular implementations, the steps may be fewer, more, or the execution order may be modified. That is, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The modules described in the embodiments of the present invention may be implemented by software or hardware. The names of these modules do not in some cases constitute a limitation of the module itself.
As another aspect, the present invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the method as described in the above embodiments.
As another aspect, the present invention also provides a storage medium, which may be contained in the apparatus described in the above embodiments; or may be present separately and not assembled into the device. The storage medium carries one or more programs that, when executed by the apparatus, cause the apparatus to: monitoring the current distance between the current car logo position and a reference point of a target map scene; when the current distance meets the effective distance condition of the target map scene, calculating a current scale based on a proportional relation between the current distance and the size of a screen, wherein the current scale is used for displaying a full view effect of the reference point in the screen;
or uploading a current vehicle logo position, wherein a current distance exists between the current vehicle logo position and a reference point of a target map scene; acquiring a current scale, wherein the current scale is obtained by calculation based on a proportional relation between the current distance and the size of a screen when the current distance meets an effective distance condition of the target map scene; and displaying the full-view effect of the reference point in the screen.
The expressions "first", "second", "said first" or "said second" used in various embodiments of the present disclosure may modify various components regardless of order and/or importance, but these expressions do not limit the respective components. The above description is only configured for the purpose of distinguishing an element from other elements. For example, the first user equipment and the second user equipment represent different user equipment, although both are user equipment. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.
When an element (e.g., a first element) is referred to as being "coupled" (operably or communicatively) with "or" connected "(operably or communicatively) to" another element (e.g., a second element) or "connected" to another element (e.g., a second element), it is understood that the one element is directly connected to the other element or the one element is indirectly connected to the other element via yet another element (e.g., a third element). In contrast, it is understood that when an element (e.g., a first element) is referred to as being "directly connected" or "directly coupled" to another element (a second element), no element (e.g., a third element) is interposed therebetween.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention according to the present invention is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is made without departing from the spirit of the invention. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (12)
1. A method for determining the scale of an electronic map comprises the following steps:
monitoring the positioning position;
based on the positioning position, acquiring a reference point in the electronic map to be rendered along a navigation route;
and determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference points.
2. The method of claim 1, wherein the reference point is a location point in a navigation route that is forward of the location position and corresponds to a navigation guidance action closest to the location position,
the determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises:
acquiring the distance from the positioning position to a position point corresponding to the navigation guiding action;
determining a map display range of the action scene based on the distance;
and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
3. The method of claim 1, wherein the reference point is an exit position of a ramp of the navigation route located ahead of and closest to the localized position, the determining a rendering scale based on map scene-related rendering parameters corresponding to the reference point comprises:
determining a map display range of a ramp scene based on the positioning position and the exit position;
and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the full view of the ramp in the map display range on the screen.
4. The method of claim 1, wherein the reference point is an electronic eye position in the navigation route located in front of the location position,
the determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference points comprises:
determining a map display range of an electronic eye scene based on the positioning position and the electronic eye position or road attribute information of a road where the electronic eye position is located;
and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range on the screen.
5. The method of claim 1, wherein the reference point is a congestion location in the navigation route located ahead of the positioning location,
the determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises:
determining a map display range of a congestion scene based on the positioning position and the congestion position;
and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
6. The method of claim 5, wherein the determining a map display range of a congestion scene based on the positioning location and the congestion location comprises:
and determining the map display range of the congestion scene based on the distance between the positioning position and the congestion position and/or the road grade of the road where the congestion position is located.
7. The method of claim 1, wherein the reference point is an end position in the navigation route located in front of the position fix,
the determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises:
determining a map display range of an end point scene based on the positioning position and the end point position, so that each position point between the positioning position and the end point position is included in the map display range;
and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
8. The method according to claim 1, wherein the reference point is road attribute information of a road on which the location position is located in the navigation route,
the determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point comprises:
determining a map display range of a road attribute scene based on the road attribute information;
and obtaining a rendering scale of the electronic map to be rendered based on the proportional relation between the map display range and the screen size, wherein the rendering scale is used for displaying the map elements in the map display range in the screen.
9. The method according to any one of claims 1-8, wherein said obtaining a reference point in an electronic map to be rendered along a navigation route based on said localized position comprises:
when a reference point of the electronic map to be rendered is acquired along the navigation route of the positioning position, judging that a scene effective condition of the map scene is met;
the method further comprises the following steps:
and entering a map scene corresponding to the reference point according to the scene effective condition.
10. A scale determining apparatus of an electronic map, comprising:
the monitoring module monitors the positioning position;
the acquisition module is used for acquiring a reference point in the electronic map to be rendered along a navigation route based on the positioning position;
and the determining module is used for determining a rendering scale based on the rendering parameters related to the map scene corresponding to the reference point.
11. An electronic device, the device comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus; the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the corresponding operation of the method according to any one of claims 1-9.
12. A storage medium having stored thereon a computer program which, when executed by a processor, carries out the method of any one of claims 1 to 9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115186026A (en) * | 2022-06-30 | 2022-10-14 | 北京字跳网络技术有限公司 | Map display method and device, storage medium and electronic equipment |
| WO2024027274A1 (en) * | 2022-08-03 | 2024-02-08 | 腾讯科技（深圳）有限公司 | Map scene rendering method and apparatus, server, terminal, computer-readable storage medium, and computer program product |
| WO2024066881A1 (en) * | 2022-09-30 | 2024-04-04 | 腾讯科技（深圳）有限公司 | Map navigation method and apparatus, and computer device and storage medium |
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| CN113868356A (en) * | 2021-09-28 | 2021-12-31 | 阿里巴巴新加坡控股有限公司 | Rendering method, rendering apparatus, storage medium, and computer program |
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| CN113868356A (en) * | 2021-09-28 | 2021-12-31 | 阿里巴巴新加坡控股有限公司 | Rendering method, rendering apparatus, storage medium, and computer program |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115186026A (en) * | 2022-06-30 | 2022-10-14 | 北京字跳网络技术有限公司 | Map display method and device, storage medium and electronic equipment |
| WO2024027274A1 (en) * | 2022-08-03 | 2024-02-08 | 腾讯科技（深圳）有限公司 | Map scene rendering method and apparatus, server, terminal, computer-readable storage medium, and computer program product |
| WO2024066881A1 (en) * | 2022-09-30 | 2024-04-04 | 腾讯科技（深圳）有限公司 | Map navigation method and apparatus, and computer device and storage medium |
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