CN115330963A - Display method and display device of satellite map - Google Patents
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Abstract
The invention discloses a display method and a display device of a satellite map, belonging to the technical field of electronic equipment, wherein the display method of the satellite map comprises the following steps: the method comprises the steps of obtaining feature information to be displayed and position information of the electronic equipment, obtaining a first actual area to be displayed according to the feature information and the position information, obtaining resolution of a display screen of the electronic equipment, determining a target level according to the resolution and the first actual area, and displaying a satellite map corresponding to the target level, wherein the satellite map corresponding to the target level comprises the feature information and the position information.
Description
Technical Field
The invention belongs to the technical field of electronic equipment, and particularly relates to a display method and a display device of a satellite map.
Background
In the application display of the existing Geographic Information System (GIS), if feature Information and equipment Information need to be displayed, a central point needs to be set, a preset satellite map display hierarchy is set, and the feature Information and the equipment Information are displayed by being superposed on a satellite map. When a GIS map scene application with multi-tenant and multi-user roles occurs, corresponding GIS map configuration writing needs to be carried out according to each tenant type and user type. When the displayed terminal devices are different, corresponding GIS map configuration compiling is carried out again according to the resolution ratios of the different terminal devices. When the GIS application is used as the support application of the cloud platform, the development amount of the work is large, and the work cannot be reused.
Disclosure of Invention
The embodiment of the invention aims to provide a satellite map display method and a satellite map display device, and aims to solve the technical problems that when a GIS (geographic information system) is used as a support application of a cloud platform, the development amount is large and the GIS cannot be reused.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a method for displaying a satellite map, where the method includes:
acquiring the ground feature information to be displayed and the position information of the electronic equipment;
obtaining a first actual area to be displayed according to the ground feature information and the position information;
acquiring the resolution of a display screen of the electronic equipment;
determining a target level according to the resolution and the first actual area;
displaying a satellite map corresponding to the target level;
wherein the satellite map corresponding to the target level comprises the feature information and the position information.
Optionally, the satellite map has N levels, the resolution includes a number of pixels displayable by the display screen, and the determining a target level according to the resolution and the actual area includes:
determining N spatial resolutions respectively corresponding to the N levels;
obtaining N actual areas corresponding to the N levels respectively according to the N spatial resolutions and the pixel quantity;
determining a level corresponding to a second actual area of the N actual areas as a target level when the first actual area matches the second actual area.
Optionally, the determining N spatial resolutions corresponding to the N levels respectively includes:
acquiring the actual distance of a tile and the pixel value of the tile under each level;
and determining N spatial resolutions respectively corresponding to the N levels according to the ratio of the actual distance to the pixel value.
Optionally, before the acquiring the feature information to be displayed and the position information of the electronic device, the method further includes:
configuring target ground object information and target position information for the electronic equipment;
wherein the target ground object information comprises at least one of: attribute of ground object point, attribute of ground object surface and attribute of ground object line;
the target feature information comprises the feature information;
the target location information includes the location information.
Alternatively, the obtaining of the first actual area to be displayed according to the feature information and the position information includes:
obtaining a maximum longitude Ymax, a maximum latitude Xmax, a minimum longitude Ymin and a minimum latitude Xmin according to the feature information and the position information;
obtaining four coordinates (Xmax, ymax), (Xmax, ymin), (Xmin, ymax), (Xmin, ymin) according to the maximum longitude Ymax, the maximum latitude Xmax, the minimum longitude Ymin and the minimum latitude Xmin;
and obtaining the first actual area according to the four coordinates.
In a second aspect, an embodiment of the present invention provides a display device for a satellite map, including:
the first acquisition module is used for acquiring the ground feature information to be displayed and the position information of the electronic equipment;
the calculation module is used for obtaining a first actual area to be displayed according to the ground feature information and the position information;
the second acquisition module is used for acquiring the resolution of a display screen of the electronic equipment;
a determination module for determining a target level according to the resolution and the first actual area;
the display module is used for displaying the satellite map corresponding to the target level;
wherein the satellite map corresponding to the target hierarchy includes the feature information and the location information.
Optionally, the satellite map has N levels, the resolution includes a number of pixels displayable by the display screen, and the determining module includes:
a first determining sub-module, configured to determine N spatial resolutions corresponding to the N levels, respectively;
a second determining submodule, configured to obtain N actual areas corresponding to the N levels according to the N spatial resolutions and the number of pixels;
determining a level corresponding to a second actual area of the N actual areas as a target level when the first actual area matches the second actual area.
Optionally, the first determining submodule is specifically configured to obtain an actual distance of a tile at each level and a pixel value of the tile;
and determining N spatial resolutions respectively corresponding to the N levels according to the ratio of the actual distance to the pixel value.
Optionally, the display device further comprises:
the configuration module is used for configuring target ground object information and target position information for the electronic equipment;
wherein the target ground object information comprises at least one of: attribute of ground object point, attribute of ground object surface and attribute of ground object line;
the target feature information comprises the feature information;
the target location information includes the location information.
Optionally, the calculation module comprises:
the first calculation module is used for obtaining a maximum longitude Ymax, a maximum latitude Xmax, a minimum longitude Ymin and a minimum latitude Xmin according to the feature information and the position information;
a second calculation module, configured to obtain four coordinates (Xmax, ymax), (Xmax, ymin), (Xmin, ymax), (Xmin, ymin) according to the maximum longitude Ymax, the maximum latitude Xmax, and the minimum longitude Ymin;
and the third calculation module is used for obtaining the first actual area according to the four coordinates.
In the embodiment of the invention, the electronic equipment acquires feature information to be displayed and position information of the electronic equipment, obtains a first actual area to be displayed according to the feature information and the position information, acquires the resolution of a display screen of the electronic equipment, determines a target level according to the resolution and the first actual area, and displays a satellite map corresponding to the target level, wherein the satellite map corresponding to the target level comprises the feature information and the position information. The resolution ratio of the electronic equipment and the actual area to be displayed can be estimated, and the level size of the map suitable for display is obtained, so that the corresponding satellite map can be obtained.
Drawings
Fig. 1 is a schematic flowchart of a method for displaying a satellite map according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display device of a satellite map according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings in combination with embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the invention may be practiced other than those illustrated or described herein, and that the objects identified as "first," "second," etc. are generally a class of objects and do not limit the number of objects, e.g., a first object may be one or more.
For the clear understanding of the present invention, the following explanations are given for the related terms mentioned in the present invention:
tile map: the tile map pyramid model is a multi-resolution hierarchical model, and the resolution is lower and lower from the bottom layer to the top layer of the tile pyramid, but the represented geographical range is unchanged. Firstly, determining the number N of zoom levels to be provided by a map service platform, taking a map picture with the highest zoom level and the largest map scale as the bottom layer of a pyramid, namely a layer 0, partitioning the map picture, cutting the map picture from the left upper corner of the map picture to the right and from the top to the bottom, and dividing the map picture into square map tiles with the same size (such as 256x256 pixels) to form a layer 0 tile matrix; on the basis of the map picture of the 0 th layer, generating the map picture of the 1 st layer by a method of dividing each pixel into 2 multiplied by 2 pixels, partitioning the map picture into blocks, and dividing the blocks into square map tiles with the same size as the next layer to form a tile matrix of the 1 st layer; generating a layer 2 tile matrix by the same method; ..; this continues until the nth 1 layer, which constitutes the entire tile pyramid.
Hierarchy of satellite map: the map is divided into different levels according to different resolutions, the map is divided into 22 levels (the urban area in China can reach 20 levels generally, the suburban area in suburban area can reach 16 levels generally, and the urban area in foreign hotspots can reach 22 levels generally), and the scale of each level is different.
Spatial resolution: also known as ground resolution or map resolution, represents the actual ground distance represented by a pixel on the screen.
Map scale: the map scale refers to the ratio of the distance on the map to the actual distance on the ground.
Image resolution: the amount of information stored in an image is how many pixels are in each inch of the image, and is used for changing the definition of the image.
The method for displaying a satellite map according to the embodiment of the present invention is described in detail below with reference to the accompanying drawings by using specific embodiments and application scenarios thereof.
Example one
Referring to fig. 1, a flowchart illustrating a method for displaying a satellite map according to an embodiment of the present invention is shown.
The invention provides a display method of a satellite map, which comprises the following steps:
s101: and acquiring the feature information to be displayed and the position information of the electronic equipment.
The feature information to be displayed can be provided for the electronic device and displayed on the display screen, and can be obtained by the user through selection on the display screen of the electronic device or through input on the display screen of the electronic device. The position information of the electronic device can be automatically acquired by a positioning system of the electronic device.
For example, if the user corresponding to the electronic device is a tenant of a building, the location information of the electronic device is the location of the building, and the feature information that the user wants to display may include an elevator, a subway station near the building, a road, and the like.
In one possible implementation, the electronic device may display all the feature information of the building and nearby buildings, such as elevators, pump rooms, power distribution rooms, water rooms, tenant rooms, and other subway stations, roads, bus stations, and the like nearby the building, and after receiving the input from the user, determine the feature information to be displayed according to the input from the user, such as the selection of the elevator, the road, and the subway station by the user.
S102: and obtaining a first actual area to be displayed according to the ground feature information and the position information.
The first actual area may be an area surrounded by the feature information and the position information, or an area capable of covering the feature information and the position information, for example, the feature information may be the first feature, the second feature, and the position information may be the first position, and the first actual area may be an area of a triangle formed by the first feature, the second feature, and the first position, or a circular area formed by the first feature, the second feature, and the first position. The method for calculating the first area is not limited herein.
In this embodiment, the coordinates of the position information and the coordinates of the feature information may be different. For example, the location information of the user is a target subway station, but the feature information that the user wants to display may be elevator information of a building 3km away from the target subway station.
S103: and acquiring the resolution of a display screen of the electronic equipment.
It should be noted that, in this embodiment, the resolution of the display screen of the electronic device may be the number of pixels displayed on the screen.
Optionally, the resolution of the electronic device may also be a resolution capable of presenting a better effect, for example, assuming that the terminal device to be displayed is a display with a resolution of 1920 × 1080, and 1344 × 765 pixels can be displayed according to the display effect that 70% of the full screen is the best display effect, that is, the resolution of the electronic device is 1344 × 765 pixels.
S104: determining a target level according to the resolution and the first actual area.
Because the satellite maps of different levels have different spatial resolutions, after the first actual area to be displayed is obtained, estimation can be performed according to the resolution and the first actual area of the electronic device, so that the level size of the map suitable for being displayed by the electronic device is obtained.
S105: displaying a satellite map corresponding to the target level;
wherein the satellite map corresponding to the target hierarchy includes the feature information and the location information.
It should be noted that the satellite map corresponding to the target level is a map of a map level suitable for display obtained by estimation of the electrical device, and after the satellite map corresponding to the target level is displayed, the user can change the level of the satellite map displayed by the electronic device as needed.
In a possible embodiment, the satellite map has N levels, the resolution includes the number of pixels displayable by the display screen, and step S104 can be completed by sub-steps S1041 to S1042:
s1041: and determining N spatial resolutions respectively corresponding to the N levels.
S1042: obtaining N actual areas corresponding to the N levels respectively according to the N spatial resolutions and the pixel quantity;
determining a level corresponding to a second actual area of the N actual areas as a target level when the first actual area matches the second actual area.
Specifically, the satellite map may be divided into different levels according to different spatial resolutions, and approximately 22 levels (a domestic urban area may generally reach 20 levels, a suburban area may generally reach 16 levels, and a foreign hot-spot urban area may reach 22 levels), that is, the number of N may be 22, 20, 16 or other numerical values, the numerical value of N may be determined according to the location of the electronic device, or may be determined according to a map application, which is not limited herein.
The resolution may be the number of pixels that can be displayed by the display screen, or the number of pixels that are displayed by the display screen when the display screen has a better display effect. For example, for a display screen with a resolution of 1920 × 1080, the number of displayable pixels is 1920 × 1080, and 1344 × 765 pixels can be displayed according to the better display effect of 70% of the full screen.
Optionally, since the spatial resolution is the actual ground distance represented by one pixel on the screen, after the number of displayable pixels on the display screen is obtained, the actual area displayable by the display screen at each level can be obtained by multiplying the spatial resolution by the number of displayable pixels.
In a possible embodiment, the satellite map has N levels, the resolution includes the number of pixels displayable by the display screen, and step S1041 is completed by sub-step S10411 to sub-step S10412:
s10411: acquiring the actual distance of a tile and the pixel value of the tile under each level;
optionally, scales corresponding to the N levels of the satellite map are different, and the actual distance of the tile at each level can be obtained by the scales corresponding to the N levels of the satellite map.
S10412: determining N spatial resolutions respectively corresponding to the N levels according to the ratio of the actual distance to the pixel value
In the present invention, when the image resolution of a tile is 72dpi by 72dpi, and 22 hierarchies are taken as examples, spatial resolutions calculated and obtained according to a scale and tile pixels corresponding to each hierarchy are shown in table 1.
TABLE 1 satellite map parameter correspondence table
For example, the tile resolution is set to 72dpi by 72dpi to ensure the consistency of the image display effect and calculation.
In the case where N has a value of 10, 10 levels correspond to a scale of 80 ten thousand: 1, the distance on the corresponding graph is 2.54cm, the pixel number corresponding to the 10-level tile is 72, namely, the actual distance corresponding to the 10-level tile is 800000 × 2.54cm and about 20 kilometers, and the spatial resolution is about 278 meters according to the actual distance of 20 kilometers and the pixel number corresponding to the tile of 72.
In the case of a value of 19 for N, a scale of 1500 for level 19: 1, the distance on the corresponding graph is 3.28cm, the number of pixels corresponding to the 19-level tile is 93, the actual distance corresponding to the 19 level is 1500 × 3.28cm and about 50m, and the spatial resolution is about 0.54m according to the actual distance 50m and the number of pixels corresponding to the tile 93.
After the spatial resolution under each level is obtained, the actual area corresponding to each level, that is, the actual area displayable by the satellite map under each level, can be obtained according to the displayable pixel number of the display screen.
For example, for a display screen capable of displaying 1344 × 765 pixels, the actual area of the satellite map displayable at 19 levels is (1344 × 0.54) × (765 × 0.54), which is about 300 square kilometers; the actual area of the satellite map that can be displayed at level 20 is (1344 × 0.27) × (765 × 0.27), which is about 75 square kilometers, and so on.
For example, if the first actual area obtained in step 102 is about 74 square kilometers, the area matched with the first actual area is determined to be 75 square kilometers, and the determined target level is 20 levels, and the electronic device displays a satellite map corresponding to the 20 levels.
In a possible implementation manner, before step S101, step S106 may further be included:
s106: configuring target ground object information and target position information for the electronic equipment;
wherein the target ground object information comprises at least one of: the attributes of the ground feature points, the attributes of the ground feature surfaces and the attributes of the ground feature lines;
the target feature information comprises the feature information;
the target location information includes the location information.
The target ground object information is an object on the user geographical position, such as a building, a bridge, a road, river water, a tunnel and the like. For example, buildings on a GIS map may be represented by points (mainly small-area objects such as equipment, pump rooms, power distribution rooms, and the like), lines (bridges, roads, tunnels, and the like), and planes (construction sites, parks, and the like), and the labeling modes may be different and are mainly determined according to actual needs of users, which is not limited herein.
In addition, position information, namely the position corresponding to each ground feature, needs to be configured, so that the ground features correspond to the positions, and the ground features can be conveniently displayed at the back.
In one possible embodiment, step S102 may be completed by sub-step S1021 to sub-step S1023:
s1021: obtaining a maximum longitude Ymax, a maximum latitude Xmax, a minimum longitude Ymin and a minimum latitude Xmin according to the feature information and the position information;
s1022: obtaining four coordinates (Xmax, ymax), (Xmax, ymin), (Xmin, ymax), (Xmin, ymin) according to the maximum longitude Ymax, the maximum latitude Xmax, the minimum longitude Ymin and the minimum latitude Xmin;
s1023: and obtaining the first actual area according to the four coordinates.
Specifically, each piece of feature information includes longitude and latitude coordinates where the corresponding feature is located, and each piece of location information includes longitude and latitude coordinates where the location is located. For example, if the selected feature is feature 1, feature 2, feature 3, and the position is a, four coordinates, that is, coordinates (X1, Y1) of feature 1, coordinates (X2, Y2) of feature 2, coordinates (X3, Y3) of feature 3, and coordinates (Xa, ya) of position a, can be obtained. From the four values X1, X2, X3, xa, the maximum value and the minimum value can be obtained, for example, X1 is the maximum value, X2 is the minimum value, X1= Xmax, X2= Xmin. Similarly, the maximum value and the minimum value can be obtained from the four values Y1, Y2, Y3, and Ya, for example, when Y1 is the maximum value and Y2 is the minimum value, Y1= Ymax and Y2= Ymin. Obtaining four coordinates (Xmax, ymax), (Xmax, ymin), (Xmin, ymax), (Xmin, ymin) according to Ymax, xmax, ymin and Xmin, namely obtaining a quadrangle, and obtaining a first actual area by calculating the area of the quadrangle.
It should be noted that the maximum longitude Ymax, the maximum latitude Xmax, the minimum longitude Ymin, and the minimum latitude Xmin are not affected by the number of features in the feature information. For example, the feature information includes K features, feature 1, feature 2. Then K +1 coordinates can be obtained, i.e. coordinates (X1, Y1) of feature 1, coordinates (X2, Y2) of feature 2, coordinates (X3, Y3) … coordinates (Xk, yk) of feature K of feature 3, and coordinates (Xa, ya) of location a. From the K +1 values of X1, X2, X3... Xk, xa, the maximum and minimum values can be obtained, e.g., X1 is the maximum value and Xk is the minimum value, then X1= Xmax, xk = Xmin. Similarly, from the K +1 values of Y1, Y2, Y3... Yk, ya, the maximum and minimum values can be obtained, for example, Y1 is the maximum value, Y7 is the minimum value, Y1= Ymax, Y7= Ymin. The following calculation method is the same as above, and the description of this embodiment is omitted here.
Example two
Referring to fig. 2, a schematic structural diagram of a display device 20 for a satellite map according to an embodiment of the present invention is shown.
The display device 20 of the satellite map comprises:
a first obtaining module 201, configured to obtain surface feature information to be displayed and position information of an electronic device;
the calculation module 202 is configured to obtain a first actual area to be displayed according to the feature information and the position information;
a second obtaining module 203, configured to obtain a resolution of a display screen of the electronic device;
a determining module 204, configured to determine a target level according to the resolution and the first actual area;
a display module 205, configured to display a satellite map corresponding to a target hierarchy;
wherein the satellite map corresponding to the target hierarchy includes the feature information and the location information.
Optionally, the satellite map has N levels, the resolution includes the number of pixels displayable by the display screen, and the determining module 204 includes:
a first determining submodule 2041, configured to determine N spatial resolutions corresponding to the N levels, respectively;
a second determining submodule 2042, configured to obtain, according to the N spatial resolutions and the number of pixels, N actual areas corresponding to the N levels, respectively;
determining a level corresponding to a second actual area of the N actual areas as a target level when the first actual area matches the second actual area.
Optionally, the first determining submodule 2041 is specifically configured to obtain an actual distance of a tile at each level and a pixel value of the tile;
and determining N spatial resolutions respectively corresponding to the N levels according to the ratio of the actual distance to the pixel value.
Optionally, the display device 20 further includes:
a configuration module 206, configured to configure target ground object information and target location information for the electronic device;
wherein the target ground object information comprises at least one of: the attributes of the ground feature points, the attributes of the ground feature surfaces and the attributes of the ground feature lines;
the target feature information comprises the feature information;
the target location information includes the location information.
Optionally, the calculation module 202 includes:
the first calculating module 2021 is configured to obtain a maximum longitude Ymax, a maximum latitude Xmax, a minimum longitude Ymin, and a minimum latitude Xmin according to the feature information and the location information;
a second calculating module 2022, configured to obtain four coordinates (Xmax, ymax), (Xmax, ymin), (Xmin, ymax), (Xmin, ymin) according to the maximum longitude Ymax, the maximum latitude Xmax, the minimum longitude Ymin, and the minimum latitude Xmin;
a third calculating module 2023, configured to obtain the first actual area according to the four coordinates.
The display device 20 of the satellite map provided by the embodiment of the present invention can implement each process implemented in the above method embodiments, and is not described here again to avoid repetition.
In the embodiment of the invention, the electronic equipment acquires feature information to be displayed and position information of the electronic equipment, obtains a first actual area to be displayed according to the feature information and the position information, acquires the resolution of a display screen of the electronic equipment, determines a target level according to the resolution and the first actual area, and displays a satellite map corresponding to the target level, wherein the satellite map corresponding to the target level comprises the feature information and the position information. The resolution ratio of the electronic equipment and the actual area to be displayed can be estimated, and the level size of the map suitable for display is obtained, so that the corresponding satellite map can be obtained.
The virtual system in the embodiment of the present invention may be a device, or may be a component, an integrated circuit, or a chip in a terminal.
In addition, it should be noted that the above-described embodiments of the apparatus are merely illustrative, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of the modules to implement the purpose of the embodiments according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to the intelligent cognitive method and system provided in any embodiment of the present invention, and are not described herein again.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A display method of a satellite map is characterized by comprising the following steps:
acquiring the ground feature information to be displayed and the position information of the electronic equipment;
obtaining a first actual area to be displayed according to the ground feature information and the position information;
acquiring the resolution of a display screen of the electronic equipment;
determining a target level according to the resolution and the first actual area;
displaying a satellite map corresponding to the target level;
wherein the satellite map corresponding to the target hierarchy includes the feature information and the location information.
2. The method of claim 1, wherein the satellite map has N levels, the resolution comprises a number of pixels displayable by the display screen, and the determining the target level according to the resolution and the first actual area comprises:
determining N spatial resolutions respectively corresponding to the N levels;
obtaining N actual areas corresponding to the N levels respectively according to the N spatial resolutions and the pixel quantity;
determining a level corresponding to a second actual area of the N actual areas as a target level when the first actual area matches the second actual area.
3. The method according to claim 2, wherein the determining N spatial resolutions corresponding to the N levels respectively comprises:
acquiring the actual distance of a tile and the pixel value of the tile under each level;
and determining N spatial resolutions respectively corresponding to the N levels according to the ratio of the actual distance to the pixel value.
4. The method for displaying the satellite map according to claim 1, wherein before the acquiring the feature information to be displayed and the position information of the electronic device, the method further comprises:
configuring target ground object information and target position information for the electronic equipment;
wherein the target ground object information comprises at least one of: attribute of ground object point, attribute of ground object surface and attribute of ground object line;
the target feature information comprises the feature information;
the target location information includes the location information.
5. The method of the satellite map according to claim 1, wherein the obtaining the first actual area to be displayed according to the feature information and the position information comprises:
obtaining a maximum longitude Ymax, a maximum latitude Xmax, a minimum longitude Ymin and a minimum latitude Xmin according to the feature information and the position information;
obtaining four coordinates (Xmax, ymax), (Xmax, ymin), (Xmin, ymax), (Xmin, ymin) according to the maximum longitude Ymax, the maximum latitude Xmax, the minimum longitude Ymin and the minimum latitude Xmin;
and obtaining the first actual area according to the four coordinates.
6. A display device for a satellite map, comprising:
the first acquisition module is used for acquiring the ground feature information to be displayed and the position information of the electronic equipment;
the calculation module is used for obtaining a first actual area to be displayed according to the ground feature information and the position information;
the second acquisition module is used for acquiring the resolution of a display screen of the electronic equipment;
a determination module for determining a target level based on the resolution and the first actual area;
the display module is used for displaying the satellite map corresponding to the target level;
wherein the satellite map corresponding to the target level comprises the feature information and the position information.
7. The display device of claim 6, wherein the satellite map has N levels, wherein the resolution comprises a number of pixels displayable by the display screen, and wherein the determining module comprises:
a first determining submodule, configured to determine N spatial resolutions corresponding to the N levels, respectively;
a second determining submodule, configured to obtain, according to the N spatial resolutions and the number of pixels, N actual areas corresponding to the N levels, respectively;
determining a level corresponding to a second actual area of the N actual areas as a target level when the first actual area matches the second actual area.
8. The display device according to claim 7, wherein the first determination submodule is in particular adapted to obtain the actual distance of the tiles and the pixel values of the tiles at each level;
and determining N spatial resolutions respectively corresponding to the N levels according to the ratio of the actual distance to the pixel value.
9. The display device according to claim 6, further comprising:
the configuration module is used for configuring target ground object information and target position information for the electronic equipment;
wherein the target ground object information comprises at least one of: attribute of ground object point, attribute of ground object surface and attribute of ground object line;
the target feature information comprises the feature information;
the target location information includes the location information.
10. The display device according to claim 6, wherein the calculation module comprises:
the first calculation module is used for obtaining a maximum longitude Ymax, a maximum latitude Xmax, a minimum longitude Ymin and a minimum latitude Xmin according to the feature information and the position information;
a second calculating module, configured to obtain four coordinates (Xinax, ymax), (Xmax, ymin), (Xmin, ymax), (Xmin, ymin), according to the maximum longitude Ymax, the maximum latitude Xmax, the minimum longitude Ymin, and the minimum latitude Xmin;
and the third calculation module is used for obtaining the first actual area according to the four coordinates.
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