CN101634566B - Navigation system and method adopted by same for correcting map data - Google Patents
Navigation system and method adopted by same for correcting map data Download PDFInfo
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Abstract
The invention discloses a navigation system and a method adopted by the same for correcting map data. The navigation system comprises a storage module for storing the map data, a map display module, a path search module and a correction module for correcting the map data in the storage module, wherein the map display module displays a map according to the map data stored in the storage module of the map data; and the path search module generates a guide path according to the map data stored in the storage module of the map data. In the invention, as the correction module for correcting the map data is arranged in the navigation system, a user can directly and manually correct local map data on the navigation system aiming at changed map data, and the navigation system can display the map and generate the guide path according to the corrected map data, therefore, the situation that the map data of the navigation system is not uniform with the actual situation can not appear, and the navigation system can be used by the user conveniently and is more practical.
Description
Technical Field
The invention relates to the field of GPS navigation, in particular to a navigation system and a method for modifying map data adopted by the navigation system.
Background
Currently, Global Positioning System (GPS) for vehicle is one of the important applications of GPS navigation. The GPS antenna of the GPS navigation system for vehicles receives data information transmitted from at least 3 of 24 GPS satellites that surround the earth, and determines the accurate position of a navigation object in an electronic map by matching position coordinates determined by GPS satellite signals with the electronic map stored in the navigation terminal for vehicles. When driving, the user can give the navigation system a choice of the driving path and guide in the direction, thus arrive the destination correctly and quickly.
Fig. 1 shows the structural components of a conventional navigation system:
the navigation system comprises: the portable terminal includes a speaker 1, a memory module 2, an input device 3, an audio output device 4, a display device 5, a control device 6 for controlling the memory module 2, the input device 3, and the audio output device 4, respectively, and a GPS receiving device 16 connected to the control device 6.
The control device 6 is a microcomputer, and can adopt a palm computer, a smart phone, a vehicle-mounted terminal and the like. It includes: a user interface control module 7, a map data management module 8 and a navigation module 9; the navigation module 9 mainly comprises a navigation control module 10, a map display module 11, a route guidance module 12, a route search module 13, an interest point retrieval module 14 and a self-parking position detection module 15.
The storage module 2 stores contents such as map data, control program data and the like; the storage module 2 may be a storage module, and cooperates with a recording medium that can be inserted therein to read records such as map data and control program data in the recording medium, restore them into digital data, and send them to the control device 6. The recording medium may be, for example, a Secure Digital Card (SD), a Flash memory Card (TF), or the like.
The input device 3 may use a key, a joystick, a knob, a touch panel, or the like. The input device 3 is used for inputting various requirements of a user, and sends input signals of the user to a user interface control module 7 of the control device 6.
The audio output device 4 converts the audio data sent from the control device 6 into an audio signal, and sends the audio signal to the speaker 1. The speaker 1 converts the sound signal sent from the sound output device 4 into sound and outputs the sound, so that the speaker 1 can emit various operation notifications and route guidance voices according to the needs of the control device 6.
The display device 5 may use a lcd (liquid Crystal display) lcd, a projector, or a crt (cathode Ray tube) display, and displays a corresponding image according to the display data sent from the control device 6. For example, the display device 5 may display a map, a self-vehicle location marker, a planned route, a user input interface, and the like.
The GPS receiving device 16 receives signals from GPS satellites, detects the current position and the moving direction of the vehicle, and converts the detected results into protocol data, which is further sent to the own vehicle position detecting module 15 in the navigation module 9 of the control device 6.
The user interface control module 7 of the control device 6 receives the input from the input device 3, generates a control command corresponding to the content required for the input, and sends the control command to one or more sub-modules in the navigation module 9. In addition, the user interface control module 7 responds to the control command and sends the processing result returned from the navigation module 9 to the sound output device 4 and the display device 5.
The map data management module 8 of the control device 6 reads map data, which also includes data content for picture guidance, from the storage module 2 in response to a request from the navigation module 9.
The navigation control module 10 of the navigation module 9 controls and invokes the remaining sub-modules of the navigation module 9.
The map display module 11 of the navigation module 9 generates display data for map display based on the map data information read from the map data management module 8, and sends the display data to the user interface control module 7.
The route guidance module 12 of the navigation module 9 acquires the map data from the map data management module 8, performs route guidance processing on the map data, and returns the result of the guidance processing to the map data management module 8, so that the map data management module 8 can perform prediction reading. In addition, the data of the interface, the navigation voice and the like during induction are transmitted to the user interface control module 7.
The route search module 13 of the navigation module 9 acquires the map data from the map data management module 8, performs route search processing on the map data, and returns the route search result to the route guidance module 12.
The vehicle position detection module 15 of the navigation module 9 transmits data indicating the current position obtained from the GPS receiver 16 to the map data management module 8, the map display module 11, and the route guidance module 12.
The map data stored in the storage module 2 includes road data, interest point data, and the like. In actual life, a certain road is often closed due to maintenance, subway construction or other buildings, or the whole road is dismantled due to the change of city planning; or some restaurants, gas stations, etc. For such a change of map data, in the prior art, only by the supplier of map data paying attention to the change of map data such as actual roads and points of interest frequently, the latest version of map data modified according to the changed road topography is obtained, and the user updates the map data stored in the storage module 2 in the navigation system by manually downloading the map data or by the navigation system automatically initiating a request to a server provided by the supplier, and automatically updates the map data stored in the storage module 2 on line.
If the supplier of the map data fails to update the map data in time, or the user does not download the latest map data even if the map data is updated, and the map data is different from the road path or other map data in reality, the navigation system still performs the operation according to the old map data when displaying the map and planning the guidance path, and the user may travel according to the path planned by the navigation system, and the situation that the map data is not uniform with the actual situation may occur, and the user goes wrong. Even if the user knows that the road route at a certain place has changed, the user is not able to use the road as an avoidance link each time the conditions for setting the planned route are input, unless the map is updated again from the map data provider.
Disclosure of Invention
The invention aims to provide a navigation system which is more convenient to use and a method for modifying map data adopted by the navigation system.
The purpose of the invention is realized by the following technical scheme:
a navigation system comprises a storage module, a map display module and a path search module, wherein the storage module stores map data; the navigation system also comprises a modification module which can modify the map data in the storage module; the map display module displays a map according to the map data stored in the map data storage module; the route searching module generates a guide route according to the map data stored in the map data storage module.
The map data comprises road data, and the modification module is a road data modification module for modifying the road data. Since the change of the road data has the greatest influence on the normal use of the user, the road data modification module may be provided only for the modification of the road data.
The road data stored in the storage module comprises road records and attributes corresponding to each road record, wherein the attributes comprise a display state and a deletion state; the road data modification module can modify the attribute of the road record in the road data; the map display module only reads the road record with the attribute of display from the road data for display; the route searching module generates a guide route for the displayed road record according to the attribute of the road data. The corresponding attribute is set for each road record, so that a user can work by changing the attribute set for each road record when manually deleting the road data, and after the road is recovered to pass, the user can modify the attribute of the road record into the display again.
The road data is stored in a storage module by taking a picture as a unit; the road data is provided with nodes at positions crossing the map sheets to form map sheet road sections in each map sheet, and each map sheet road section is respectively and correspondingly provided with road section attributes;
the road data modification module also comprises an image road section detection submodule and an image road modification submodule;
when detecting that the road to be deleted belongs to more than two map sheets, the map sheet road segment detection submodule acquires a corresponding map sheet road segment from the related map sheets;
and the map road modification submodule modifies the map road according to the obtained road segment attribute of the map road segment after receiving a modification instruction of the road record input by the user. The design aims at the modification of road attributes in map data stored by taking an image frame as a unit, firstly, inquiring all related image frame road sections of a road crossing the image frame by taking the image frame as a unit, and then respectively modifying the road section attributes corresponding to each image frame road section.
The modification module further comprises:
the display positioning road maintenance record linked list is used for storing the attribute of the road record so that a user can view the attribute of the road record in the map data by selecting a road mode when displaying the road of the electronic map by displaying the positioning road maintenance record linked list;
and the road maintenance record linked list for topology is used for storing the attribute of the road record, so that when the route is calculated, the navigation system reads the attribute of the road record in the road maintenance record linked list for topology, and whether the road planning guidance route is selected or not is determined according to the attribute of the road. The two linked lists can be designed to store the attribute information of the modified road record more systematically, and the display and the processing in the navigation system are more convenient.
A method for modifying map data adopted by the navigation system comprises a modification process, a display process and a path planning process; wherein, the modification process comprises the following steps:
a: the modification module executes the step B only after detecting that modification information input by a user is received;
b: the modification module modifies the map data stored in the storage module according to the modification information received in the step A;
the display process comprises the step that a map display module of the navigation system displays a map according to the map data;
the path planning process comprises the step that a path searching module of a navigation system generates a guide path according to the map data.
The map data comprises road data, and the modification module is a road data modification module for modifying the road data;
in the step A, the road data modification module executes the step B only after detecting that modification information aiming at the road data input by a user is received;
in the step B, the road data modification module modifies the road data stored in the storage module according to the modification information for the road data received in the step a. Since the change of the road data has the greatest influence on the normal use of the user, the road data modification module may be provided only for the modification of the road data.
The road data stored in the storage module comprises road records and attributes corresponding to each road record, wherein the attributes comprise a display state and a deletion state;
in the step A, the modification information aiming at the road data comprises road records and modified attributes thereof;
in the step B, the road data modification module searches the corresponding road record in the road data stored in the storage module according to the road record in the modification information according to the modification information for the road data received in the step a, and sets the attribute of the road record to be the same as the modified attribute in the modification information;
in the display process, a map display module of the navigation system only reads the road record with the attribute of display from the road data for display;
the path planning process comprises the step that a path searching module of the navigation system generates a guide path for the displayed road record according to the attribute of the road data. The corresponding attribute is set for each road record, so that a user can work by changing the attribute set for each road record when manually deleting the road data, and after the road is recovered to pass, the user can modify the attribute of the road record into the display again.
In the modification process, before the step a, a step of receiving the map data to be modified input by the user by providing a keyword retrieval interface of the road or providing a road click interface on the map interface is further included. The setting provides a humanized interface for inputting the road which the user wants to delete, so that the user can use the road conveniently.
The road data is stored in a storage module by taking a picture as a unit; the road data is provided with nodes at positions crossing the map sheets to form map sheet road sections in each map sheet, and each map sheet road section is respectively and correspondingly provided with road section attributes;
the road data modification module also comprises an image road section detection submodule and an image road modification submodule;
wherein, the step B comprises the following steps:
b1: the map road segment detection submodule calculates the related map according to the road record in the modification information aiming at the road data received in the step A and the road data stored in the storage module by taking the map as a unit, and acquires the corresponding map road segment from the related map;
b2: and the map road modification submodule modifies the road segment attributes of all the map road segments obtained in the step B1 in sequence according to the modified attributes in the modification information aiming at the road data received in the step A.
The modification module capable of modifying the map data is arranged in the navigation system, so that a user can directly modify the map data stored in the navigation system, when the actual conditions of the user, such as encountering roads and the like, change in the actual life, the local map data can be manually modified aiming at the changed map data on the navigation system, the navigation system displays the map and generates a guide path according to the modified map data, the condition that the map data of the navigation system is not uniform with the actual conditions can not occur, the use of the user is facilitated, and the method is more practical.
Drawings
FIG. 1 is a schematic diagram of a navigation system in the prior art;
FIG. 2 is a schematic structural diagram of a navigation system in an embodiment of the present invention;
FIG. 3 is a schematic view of a navigation system diagram system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a road configuration in a map system of a navigation system in an embodiment of the present invention;
FIG. 5 is a schematic view of a node of a navigation system road in an embodiment of the invention;
fig. 6 is a flowchart of a method of deleting a road in an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the preferred embodiments.
The structure of the navigation system of the present invention is shown in fig. 2, and includes:
the map data processing system comprises a storage module 2 for storing map data, a map display module 11, a path search module 13 and a modification module 17 capable of modifying the map data in the storage module; the map display module 11 displays a map according to the map data 21 stored in the map data storage module 2; the route searching module 13 generates a guidance route according to the map data 21 stored in the map data storage module 2. With such a design, when a certain road is closed or other map data such as points of interest and the like change, a user can manually modify the map data such as the road or other points of interest and the like locally on the navigation system through the modification module 17, and the map display module 11 of the navigation system displays a map according to the modified map data; the route searching module 13 of the navigation system generates a guidance route according to the modified map data, and then guides the route, so that the situation that the map data of the navigation system is not uniform with the actual situation does not occur, the use of the user is facilitated, and the route searching module is more practical.
Since the change of the road data 210 has the largest influence on the normal use of the user, the modification of the road data in the map data is exemplified in the present embodiment. The modification module 17 includes a road data modification module 170, the road data 210 includes road records 211 and attributes 212 corresponding to each road record 211, and the attributes 212 may include two states of displaying and deleting; the road data modification module 170 may modify the attributes 212 of the road records 211 in the road data 210; the map display module 11 only reads the road record with the attribute 212 as the display in the road data 210 for displaying; the route search module 13 generates a guidance route for the displayed road record only according to the attribute 212 in the road data 210. By setting the corresponding attribute 212 for each road record 211, the user can go by changing the attribute 212 set for each road record 211 when manually modifying the road data 210, and after the road is returned to the right of way, the user can modify the attribute 212 of the road record 211 to be displayed again.
Although the road data modification module can also be set to delete the searched road record directly to achieve the purpose of modifying the road data, however, because the deletion operation is irreversible on the navigation system, after the temporarily blocked road is recovered to pass, the user cannot directly recover the road record on the navigation system, and the user must go to a map data server provided by a map data supplier to update and download the map data again, which is more troublesome than the scheme.
The map data in this embodiment is stored in the storage module in units of map sheets, that is, all the map data 21 are stored in the navigation system in blocks in units of map sheets as the minimum storage unit, as shown in fig. 3. Taking road AD and road EH as examples, they respectively span different map sheets in the map data, and when the road records span map sheets, when storing such road data, the navigation system inserts a new node M, N at the position of the road at the edge of the map sheet in advance, as shown in fig. 4 and 5, and newly forms a map sheet road segment 213 in each map sheet after inserting the node, and the map sheet road segments AM, MD, EN and NH can be respectively stored in the respective map sheets. According to the corresponding node records in the adjacent map sheets, and the nodes represent the same, the node can be used as a certificate for eliminating the node pairing in the operation of crossing the map sheets, and the AM and the MD can be integrated into a road AD; EN and NH can be integrated into a road EH. After the nodes are inserted, the road AD and the road EH can be processed in two mutually independent image frames.
The map road segments 213 in each map are respectively and correspondingly provided with road segment attributes 214, that is, the map road segments 213 of AM, MD, EN, NH, etc. are respectively and correspondingly provided with the road segment attributes 214 thereof. The road data modification module 170 further includes an image road section detection sub-module 171 and an image road modification sub-module 172; when detecting that the road to be deleted belongs to more than two map sheets, the map sheet road section detection submodule 171 acquires the corresponding map sheet road section 213 from the related map sheets; the map road modification sub-module 172 modifies the road segment attribute 214 of the map road segment 213 obtained by the map road segment detection sub-module 171 after receiving the modification instruction of the road record input by the user. The design aims at the modification of the road attribute in the map data stored by taking the map sheet as a unit, and the modification of the attribute of one road can be finished by firstly inquiring all related map sheet road sections of the road crossing the map sheet by taking the map sheet as a unit and then respectively modifying the attribute of the road section corresponding to each map sheet road section.
The modification module further comprises:
the display positioning road maintenance record linked list is used for storing the attribute of the road record so that a user can view the attribute of the road record in the map data by selecting a road mode when displaying the road of the electronic map by displaying the positioning road maintenance record linked list;
and the road maintenance record linked list for topology is used for storing the attribute of the road record, so that when the route is calculated, the navigation system reads the attribute of the road record in the road maintenance record linked list for topology, and whether the road planning guidance route is selected or not is determined according to the attribute of the road. The two linked lists can be designed to store the attribute information of the modified road record more systematically, and the display and the processing in the navigation system are more convenient.
Of course, for other map data not stored in units of map sheets, it is not necessary to set road segment attributes for each map sheet road segment, but the attributes of the road record to be modified (directly modifying the attributes of the road record) or the road record (such as directly deleting the road record) may be modified directly, so as to achieve the object of the present invention.
The method for modifying the map data adopted by the navigation system relates to a modification process, a display process and a path planning process;
the modification process comprises the following steps:
a: the modification module executes the step B only after detecting that modification information input by a user is received;
b: the modification module modifies the map data stored in the storage module according to the modification information received in the step A;
the display process comprises the step that a map display module of the navigation system displays a map according to the map data;
the path planning process comprises the step that a path searching module of a navigation system generates a guide path according to the map data.
Of course, we can modify only the road data, so that in the above step a, the road data modification module only executes step B after detecting that the modification information for the road data input by the user is received; in the step B, the road data modification module modifies the road data stored in the storage module according to the modification information aiming at the road data received in the step A; and the map display module and the path search module of the navigation system can display and navigate according to the modified map data.
The steps of setting attribute information (such as displaying, deleting two states or other distinguishable two states) to the road data to modify the road data are as follows:
in the step A, a road data modification module detects that modification information aiming at road data input by a user comprises road records and modified attributes thereof; the navigation system can receive the road which is input by the user and is desired to be modified (deleted or restored) and the modified attribute thereof by providing a keyword retrieval interface of the road or providing a road clicking interface on a map interface;
in the step B, the road data modification module searches the corresponding road record in the road data stored in the storage module according to the road record in the modification information according to the modification information for the road data received in the step a, and sets the attribute of the road record to be the same as the modified attribute in the modification information;
in the display process, a map display module of the navigation system only reads the road record with the attribute of display from the road data for display;
the path planning process comprises the step that a path searching module of the navigation system generates a guide path for the displayed road record according to the attribute of the road data.
For a navigation system which adopts a map sheet system to store map data, the step of modifying the road data by the road data modification module further comprises the following steps:
b1: the map road segment detection submodule calculates the related map according to the road record in the modification information aiming at the road data received in the step A and the road data stored in the storage module by taking the map as a unit, and acquires the corresponding map road segment from the related map;
b2: and the map road modification submodule modifies the road segment attributes of all the map road segments obtained in the step B1 in sequence according to the modified attributes in the modification information aiming at the road data received in the step A.
The following further illustrates the implementation of the present invention by taking an example of deleting a road in the map data, please refer to fig. 6, which includes the following steps:
s00: the navigation system enters a map data modification mode according to the setting of a user:
s01: the navigation system receives a road to be deleted set by a user: the navigation system can provide various interfaces for the user to set the road which the user wants to delete in various ways such as keyword retrieval, direct click on an electronic map and the like, for example, the user can set and delete the transverse road AD shown in FIG. 4;
s02: extracting nodes at both ends of the road record in the map data according to the road received in step S01; if the user sets to delete the road AD, the nodes at the two ends of the road AD are respectively the point A and the point D;
s03: calculating the map sheets which are related to the map sheet system and need to be modified and used for displaying and positioning according to the road data which are stored in the storage module by taking the map sheets as units; if the user sets the deleted road as the road AD, the map system to be involved is the map system shown in fig. 3, and the involved maps are two maps in the map system shown in fig. 3;
s04: judging whether the map sheets and map sheet systems related to the roads which are set to be deleted by the user are completely processed, if so, executing a step S07, and if not, executing a step S05;
s05: calculating to obtain the road sections of the map sheets related in the map sheets to be processed: as described above, if the user sets to delete the road AD, two maps are involved, where the map road segments involved in the two maps are the map road segment between the end point a and the node M and the map road segment between the node M and the end point D, respectively;
s06: adding a 'delete' type record in the road maintenance record linked list for displaying and positioning, which stores the attribute of the road record, according to the processing result of the step S05, so that the user can check the attribute of the road record in the map data by selecting a road mode when displaying the road of the electronic map by displaying the road maintenance record linked list for positioning, and then returning to the step S04;
s07: calculating to obtain a topological graph amplitude system and a topological graph amplitude which need to be related: as described above, if the road AD needs to be deleted, the related topological map system is the map system shown in fig. 4; the topological map sheets are two map sheets related to the road AD in FIG. 4;
s08: judging whether all related topological graph systems and topological graph sheets are processed, if so, ending the processing flow and finishing the deletion of the road, and if not, executing a step S09;
s09: acquiring the road sections of the topological graph sheet related to the topological graph sheet, namely the road to be deleted, the nodes formed by the topological graph sheet and the road sections between the starting point and the ending point of the road: as described above, the topological graph road segments involved in the road AD to be deleted are the AM and MD graph road segments shown in fig. 5; setting the corresponding road segment attribute of the related topological graph amplitude road segment as 'delete', namely setting the road segment attribute of the AM and MD two topological graph amplitude road segments as 'delete';
s10: according to the processing result of step S09, a "delete" type topology record is added to the topology road maintenance record linked list storing the attributes of the road record, so that when calculating a route, the navigation system reads the attributes of the road record in the topology road maintenance record linked list and determines whether to select the road planning guidance route according to the attributes of the road.
After the modification of the road AD is completed, since the attribute of the road AD is modified to be "deleted", when the navigation system displays the map and the road and generates and navigates the guidance route again, the road AD marked as "deleted" will not be included in the calculation range, and the situation that the map data of the navigation system is not uniform with the actual situation will not occur, which is convenient for the user to use.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (4)
1. A navigation system comprises a storage module, a map display module and a path search module, wherein the storage module stores map data; the navigation system is characterized by also comprising a modification module which can modify the map data in the storage module; the map display module displays a map according to the map data stored in the map data storage module; the route searching module generates a guide route according to the map data stored in the map data storage module; the map data comprises road data, and the modification module is a road data modification module for modifying the road data; the road data stored in the storage module comprises road records and attributes corresponding to each road record, wherein the attributes comprise a display state and a deletion state; the road data modification module can modify the attribute of the road record in the road data; the map display module only reads the road record with the attribute of display from the road data for display; the route searching module generates a guide route for the displayed road record according to the attribute of the road data; wherein,
the road data is stored in a storage module by taking a picture as a unit; the road data is provided with nodes at positions crossing the map sheets to form map sheet road sections in each map sheet, and each map sheet road section is respectively and correspondingly provided with road section attributes;
the road data modification module also comprises an image road section detection submodule and an image road modification submodule;
when detecting that the road to be deleted belongs to more than two map sheets, the map sheet road segment detection submodule acquires a corresponding map sheet road segment from the related map sheets;
and the map road modification submodule modifies the map road according to the obtained road segment attribute of the map road segment after receiving a modification instruction of the road record input by the user.
2. The navigation system of claim 1, wherein the modification module further comprises:
the display positioning road maintenance record linked list is used for storing the attribute of the road record so that a user can view the attribute of the road record in the map data by selecting a road mode when displaying the road of the electronic map by displaying the positioning road maintenance record linked list;
and the road maintenance record linked list for topology is used for storing the attribute of the road record, so that when the route is calculated, the navigation system reads the attribute of the road record in the road maintenance record linked list for topology, and whether the road planning guidance route is selected or not is determined according to the attribute of the road.
3. A method for modifying map data adopted by the navigation system comprises a modification process, a display process and a path planning process; the map data comprises road data, and the modification module is a road data modification module for modifying the road data; the road data stored in the storage module comprises road records and attributes corresponding to each road record, wherein the attributes comprise a display state and a deletion state; the modification process comprises the following steps:
a: the road data modification module executes the step B only after detecting that modification information for the road data input by a user is received; in the step A, the modification information aiming at the road data comprises road records and modified attributes thereof;
b: the road data modification module modifies the road data stored in the storage module according to the modification information aiming at the road data received in the step A; in the step B, the road data modification module searches the corresponding road record in the road data stored in the storage module according to the road record in the modification information according to the modification information for the road data received in the step a, and sets the attribute of the road record to be the same as the modified attribute in the modification information;
in the display process, a map display module of the navigation system only reads the road record with the attribute of display from the road data for display;
the path planning process comprises the steps that a path searching module of the navigation system generates a guide path for the displayed road record according to the attribute of the road data; wherein,
the road data is stored in a storage module by taking a picture as a unit; the road data is provided with nodes at positions crossing the map sheets to form map sheet road sections in each map sheet, and each map sheet road section is respectively and correspondingly provided with road section attributes;
the road data modification module also comprises an image road section detection submodule and an image road modification submodule;
the step B comprises the following steps: b1: the map road segment detection submodule calculates the related map according to the road record in the modification information aiming at the road data received in the step A and the road data stored in the storage module by taking the map as a unit, and acquires the corresponding map road segment from the related map;
b2: and the map road modification submodule modifies the road segment attributes of all the map road segments obtained in the step B1 in sequence according to the modified attributes in the modification information aiming at the road data received in the step A.
4. The method of modifying map data of claim 3,
in the modification process, before the step a, a step of receiving the map data to be modified input by the user by providing a keyword retrieval interface of the road or providing a road click interface on the map interface is further included.
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| CN107220257B (en) * | 2016-03-22 | 2019-03-15 | 腾讯科技（深圳）有限公司 | Drawing electronic map method and device |
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| CN109829440B (en) * | 2019-02-12 | 2022-02-25 | 北京百度网讯科技有限公司 | Method and device for detecting road difference, electronic equipment and storage medium |
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