CN111143493A - Method for manufacturing off-line map, intelligent terminal and storage medium - Google Patents
Method for manufacturing off-line map, intelligent terminal and storage medium Download PDFInfo
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- CN111143493A CN111143493A CN201911122262.4A CN201911122262A CN111143493A CN 111143493 A CN111143493 A CN 111143493A CN 201911122262 A CN201911122262 A CN 201911122262A CN 111143493 A CN111143493 A CN 111143493A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F16/90—Details of database functions independent of the retrieved data types
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- G06F16/9537—Spatial or temporal dependent retrieval, e.g. spatiotemporal queries
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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Abstract
The invention provides a method for manufacturing an off-line map, an intelligent terminal and a storage medium, wherein the method comprises the following steps: downloading and storing multiple types of maps of the same map in advance, and selecting one of the multiple types of maps as an in-place map; after the original map is selected, selecting a rectangular range on the zoomed original map, and generating conversion parameters according to the rectangular range; converting the original map according to the conversion parameters to generate an offline map, and storing the offline map; and the multiple types of maps of the same map generate an off-line map according to the same conversion parameter. Selecting one map in the same map as an original map, calculating conversion parameters according to a rectangular range selected after zooming, and converting to generate an off-line map; the other maps of the same map are converted by the same conversion parameter, so that the manufacture of various off-line maps of the same map is realized, the off-line maps do not need to be switched by users, the use is convenient, and the application range is wide.
Description
Technical Field
The invention relates to the technical field of intelligent transportation, in particular to a method for manufacturing an off-line map, an intelligent terminal and a storage medium.
Background
The general map service is to connect network, and obtain the online map service from the map service provider such as Google, that is, download map data from the network in real time, and then display the map data on the devices such as computers and mobile terminals, and the map in this way is called as online map. As the name implies, the online map service cannot exist away from the network, and has certain limitations for various applications based on online maps. Therefore, in order to satisfy the requirement that the user continues to use GIS (geographic information system) data without data connection, the creation of an offline map becomes necessary.
Currently, a variety of schemes are proposed for making an offline map in the field, such as: storing commonly used maps into pictures, performing slice-related processing and providing, transmitting off-line map data by using a WI-FI Direct access, downloading map tile data according to travel lines and the like. All kinds of schemes have different service environments, and users need to switch the application of different schemes according to the service environments, so that the use process is complicated, and the use efficiency is low.
Disclosure of Invention
In order to solve the problems that the application range of an off-line map making method in the prior art is single, and a user needs to switch different off-line maps in different environments, the invention provides an off-line map making method integrating a plurality of off-line map making, an intelligent terminal and a storage medium.
The invention is realized by the following technical scheme:
a method of making an off-line map, the method comprising:
downloading and storing multiple types of maps of the same map in advance, and acquiring one of the multiple types of maps as an in-place map;
zooming the original map, selecting a rectangular range on the zoomed original map, and generating conversion parameters according to the rectangular range;
converting the original map according to the conversion parameters to generate an offline map, and storing the offline map;
and the multiple types of maps of the same map generate an off-line map according to the same conversion parameter.
The method for manufacturing the offline map, wherein the zooming the original map, selecting a rectangular range on the zoomed original map, and generating the conversion parameter according to the rectangular range specifically comprises:
acquiring first tile data of the original map;
generating second tile data according to the rectangular range;
calculating the conversion parameter from the first tile data and the second tile data.
The method for manufacturing the off-line map comprises the following specific steps of:
and acquiring first tile data of the original map through a network, wherein the first tile data is the tile data of the original map when the original map is stored in the network.
The method for manufacturing the offline map, wherein converting the original map into the offline map according to the conversion parameters and storing the offline map specifically includes:
generating a plurality of offline tiles according to the selected rectangular range;
and splicing a plurality of the offline tiles and rendering to generate the offline map.
The method for manufacturing the offline map, wherein the step of generating a plurality of offline tiles according to the selected rectangular range specifically includes: and adding a watermark in the offline tile.
The method for manufacturing the offline map, wherein the step of generating the offline map by the multiple types of maps of the same map according to the same conversion parameter specifically comprises the following steps:
judging whether the stored maps of the same map are all converted into off-line maps or not;
if not, acquiring one map which is not converted into the offline map in the multiple types of maps as an original map;
converting the original map according to the conversion parameters to generate an offline map, and storing the offline map;
until all the maps of the same map are converted into offline maps.
The method for manufacturing the off-line map, wherein the step of judging whether the stored maps of the same map are all converted into the off-line map further comprises the following steps:
and if so, ending the conversion of the multiple types of maps of the same map into the offline map.
The method for manufacturing the off-line map comprises the steps of synthesizing a plurality of off-line maps converted from a plurality of types of maps of the same map to generate a map data packet, and storing the map data packet.
An intelligent terminal, comprising: the system comprises a memory, a processor and an off-line map making program which is stored on the memory and can run on the processor, wherein when the off-line map making program is executed by the processor, the off-line map making method is realized.
A storage medium stores a program for making an off-line map, and when the program is executed by a processor, the method for making the off-line map is realized.
The invention has the beneficial effects that:
the invention provides a method for manufacturing an off-line map, which comprises the steps of selecting one map of multiple types of maps in the same map as an original map, calculating conversion parameters according to a selected rectangular range after the original map is zoomed, and converting the original map according to the conversion parameters to generate the off-line map; after the off-line map is manufactured, the same conversion parameter is used for converting the multi-type maps of the same map of different types, so that the manufacturing of the multi-type off-line map of the same map is realized, the off-line map does not need to be switched by a user, the use is convenient, and the application range is wide;
based on the manufacturing method of the off-line map, the intelligent terminal and the storage medium provided by the invention can realize the same functions as the manufacturing method of the off-line map.
Drawings
FIG. 1 is a flowchart of the operation of an off-line mapping method proposed by the present invention;
FIG. 2 is a flowchart illustrating the operation of step S200 in FIG. 1;
FIG. 3 is a flowchart illustrating the operation of step S300 in FIG. 1;
FIG. 4 is a flowchart illustrating the operation of converting multiple types of maps of the same map in the off-line mapping method according to the present invention;
fig. 5 is a schematic diagram of an operating environment of the intelligent terminal according to the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the method for making an off-line map provided by the present invention is a method for converting a plurality of types of maps of the same map into an off-line map, where the plurality of types of maps refer to different displays of the same map, and the plurality of types of maps are maps that are calculated according to the map to realize different driving routes or passing routes. The method comprises the following steps: a display map, a driving route map, a walking route map, a bus route map, etc. that displays only street and building names. The user realizes the functions of route planning, transportation transfer and the like on the basis of displaying the map through the multiple types of route maps.
The invention specifically realizes the conversion from the multi-type map to the off-line map by the following modes:
s100, downloading and storing multiple types of maps of the same map in advance, and acquiring one of the multiple types of maps as an in-place map.
S200, zooming the original map, selecting a rectangular range on the zoomed original map, and generating conversion parameters according to the rectangular range.
S300, converting the original map according to the conversion parameters to generate an offline map, and storing the offline map.
And S400, generating an off-line map by the multi-type map of the same map according to the same conversion parameter.
In the embodiment of the invention, the conversion mode of the multiple maps is to convert the multiple maps in the multiple maps one by one to generate the off-line map, and after one original map is selected to generate the off-line map, the subsequent original map can be automatically converted according to the conversion mode of the previous original map without repeated adjustment, thereby avoiding the problems of repeated operation and complicated operation process. Meanwhile, the advantage of converting the multi-type maps according to the existing conversion parameters is that the scales of a plurality of off-line maps converted from the same map are the same, and the use errors caused by different scales corresponding to different multi-type maps of the same map are avoided.
Since the maps of different types are all converted by the same conversion parameter, how to calculate the conversion parameter is particularly important. Specifically, referring to fig. 2, the conversion parameter is obtained as follows:
s201, acquiring first tile data of the original map;
s202, generating second tile data according to the rectangular range;
s203, calculating the conversion parameter according to the first tile data and the second tile data.
In the above process, the first tile data in step S201 is obtained through the network, and the first tile data is the tile data when the in-place map is stored in the network.
In the invention, the conversion of the original map and the off-line map is performed by a tile technology. The tile technology is that a map picture of a map according to the maximum zoom level (namely the maximum map scale) is set as a basic layer, the basic layer is sequentially cut into a plurality of square maps with equal sizes from top to bottom and from left to right, and each single square map is in a shape like tiles which are sequentially attached and arranged, so that the tile technology is sincere. Merging a plurality of tile maps of the base layer on the basis of the base layer, fusing a plurality of pixel points in the resolution into one pixel point, and reducing the zoom level to form a first layer; the tiles of the first layer are merged again, and the second layer can be manufactured by merging the pixel points and the zoom level. The hierarchical model may record a region completely from roughly small, from roughly coarse to fine detail.
In the invention, both the off-line map and the original map are realized based on the tile technology, if the original map is converted into the off-line map, the first tile data of the original map must be converted into the second tile data of the off-line map, the conversion parameter is a parameter which needs reference operation when the first tile data is converted into the second tile data, in other words, the first tile data is multiplied by the conversion parameter to obtain the second tile data. The first tile data is data of the original map, the first tile data can be directly obtained from a network end of the original map, and the second tile data is obtained by calculating the rectangular range when the rectangular range is selected on the original map.
After the conversion parameters are generated once, the original maps in the subsequent multiple types of maps can be calculated to generate the off-line maps according to the conversion parameters, the rectangular range does not need to be selected for multiple times, the use by a user is convenient, and the position errors among different off-line maps are avoided.
Referring to fig. 3, the step S300 includes:
s301, generating a plurality of off-line tiles according to the selected rectangular range;
s302, splicing a plurality of the off-line tiles and rendering to generate the off-line map.
According to the process, after the rectangular range is selected, the original map needs to be recalculated, the offline tiles are generated in the selected rectangular range, and the offline map can be generated by splicing a plurality of offline tiles; in order to ensure that the off-line map is not stolen by others, watermarks can be added into the off-line tiles, and the information security of the off-line map is ensured.
Referring to fig. 4, the above process is a process of converting an original map in a multi-type map into an offline map, and after the offline map is converted, other maps in the multi-type map need to be converted, and the specific process is as follows:
s500, judging whether the stored maps of the same map are all converted into offline maps.
And S501, if yes, converting the multiple types of maps of the same map into offline maps is finished.
S502, if not, acquiring one map which is not converted into an offline map from the multiple types of maps as an original map;
s503, converting the original map according to the conversion parameters to generate an offline map, and storing the offline map;
s504, until all the maps of the same map are converted into the offline map.
In this embodiment, after the original map is converted into the offline map, the multiple maps are also detected, and whether all the maps in the multiple maps are converted into the offline map is determined, or not, the unconverted multiple maps are converted. In a preferred embodiment of the present invention, a part of the maps in the multiple types of maps can be pre-screened, and the off-line map production process can be ended after the part of the maps is converted, so that the off-line map production time is shortened, and the off-line map production efficiency is improved.
Referring to fig. 1, after the above steps are completed, the method for making an offline map further includes:
s600, synthesizing a plurality of off-line maps converted from multiple types of maps of the same map to generate a map data packet, and storing the map data packet.
After all the maps of the multiple types are converted into the offline maps, the multiple offline maps can be generated into a synthetic map data packet, and the map data packet is stored in a storage medium or a mobile terminal, so that the map data packet is convenient for a user to use.
Referring to fig. 5, based on the above method for making an off-line map, the present invention further provides an intelligent terminal 10, including: a memory 11, a processor 12 and a program 13 for creating an offline map, which is stored in the memory 11 and can be run on the processor 12, wherein the program 13 for creating an offline map, when executed by the processor 12, implements the following steps:
s100, downloading and storing multiple types of maps of the same map in advance, and acquiring one of the multiple types of maps as an in-place map.
S200, zooming the original map, selecting a rectangular range on the zoomed original map, and generating conversion parameters according to the rectangular range.
S300, converting the original map according to the conversion parameters to generate an offline map, and storing the offline map.
And S400, generating an off-line map by the multi-type map of the same map according to the same conversion parameter.
Wherein the step S200 includes:
s201, acquiring first tile data of the original map;
s202, generating second tile data according to the rectangular range;
s203, calculating the conversion parameter according to the first tile data and the second tile data.
Wherein the step S300 includes:
s301, generating a plurality of off-line tiles according to the selected rectangular range;
s302, splicing a plurality of the off-line tiles and rendering to generate the off-line map.
Wherein, after the step S400, the method further comprises:
s500, judging whether the stored maps of the same map are all converted into offline maps.
And S501, if yes, converting the multiple types of maps of the same map into offline maps is finished.
S502, if not, acquiring one map which is not converted into an offline map from the multiple types of maps as an original map;
s503, converting the original map according to the conversion parameters to generate an offline map, and storing the offline map;
s504, until all the maps of the same map are converted into the offline map.
After the above processes are performed, the processor 12 performs:
s600, synthesizing a plurality of off-line maps converted from multiple types of maps of the same map to generate a map data packet, and storing the map data packet.
Based on the above method for making the off-line map, the invention further discloses a storage medium, wherein the storage medium stores a making program of the off-line map, and the making program of the off-line map is executed by the processor to realize the method for making the off-line map.
The invention discloses a method for manufacturing an off-line map, which comprises the steps of selecting one map of multiple types of maps in the same map as an original map, calculating conversion parameters according to a selected rectangular range after zooming the original map, and converting the original map according to the conversion parameters to generate the off-line map; after the off-line map is manufactured, the same conversion parameter is used for converting the multi-type maps of the same map of different types, the manufacturing of the multi-type off-line map of the same map is realized, the off-line map does not need to be switched by a user, the use is convenient, and the application range is wide. On the basis of the manufacturing method of the off-line map, the intelligent terminal and the storage medium provided by the invention can realize the same functions as the manufacturing method of the off-line map.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A method for making an off-line map, the method comprising:
downloading and storing multiple types of maps of the same map in advance, and acquiring one of the multiple types of maps as an in-place map;
zooming the original map, selecting a rectangular range on the zoomed original map, and generating conversion parameters according to the rectangular range;
converting the original map according to the conversion parameters to generate an offline map, and storing the offline map;
and the multiple types of maps of the same map generate an off-line map according to the same conversion parameter.
2. The method for producing an offline map according to claim 1, wherein the zooming the original map, selecting a rectangular range on the zoomed original map, and generating the conversion parameter according to the rectangular range specifically comprises:
acquiring first tile data of the original map;
generating second tile data according to the rectangular range;
calculating the conversion parameter from the first tile data and the second tile data.
3. The method for making an offline map according to claim 2, wherein the obtaining of the first tile data of the original map specifically includes:
and acquiring first tile data of the original map through a network, wherein the first tile data is the tile data of the original map when the original map is stored in the network.
4. The method for producing an offline map according to claim 1, wherein the converting the original map into the offline map according to the conversion parameter and storing the offline map specifically includes:
generating a plurality of offline tiles according to the selected rectangular range;
and splicing a plurality of the offline tiles and rendering to generate the offline map.
5. The method of claim 4, wherein the generating a plurality of offline tiles according to the selected rectangular range comprises: and adding a watermark in the offline tile.
6. The method of claim 1, wherein the generating an offline map from the maps of the same type according to the same transformation parameter specifically comprises:
judging whether the stored maps of the same map are all converted into off-line maps or not;
if not, acquiring one map which is not converted into the offline map in the multiple types of maps as an original map;
converting the original map according to the conversion parameters to generate an offline map, and storing the offline map;
until all the maps of the same map are converted into offline maps.
7. The method of claim 6, wherein the determining whether the stored maps of the same map are all converted into offline maps further comprises:
and if so, ending the conversion of the multiple types of maps of the same map into the offline map.
8. The method of claim 6 or 7, wherein a plurality of the off-line maps converted from a plurality of types of maps of the same map are combined to generate a map data packet, and the map data packet is stored.
9. An intelligent terminal, characterized in that, intelligent terminal includes: a memory, a processor and a program for producing an off-line map stored in the memory and executable on the processor, wherein the program for producing an off-line map is executed by the processor to implement the method for producing an off-line map according to any one of claims 1 to 8.
10. A storage medium storing a program for creating an offline map, the program being executed by a processor to implement the method for creating an offline map according to any one of claims 1 to 8.
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