CN104776855A - Crossroad navigation method and apparatus - Google Patents
Crossroad navigation method and apparatus Download PDFInfo
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- CN104776855A CN104776855A CN201510117724.9A CN201510117724A CN104776855A CN 104776855 A CN104776855 A CN 104776855A CN 201510117724 A CN201510117724 A CN 201510117724A CN 104776855 A CN104776855 A CN 104776855A
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- next intersection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3626—Details of the output of route guidance instructions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3626—Details of the output of route guidance instructions
- G01C21/3632—Guidance using simplified or iconic instructions, e.g. using arrows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3667—Display of a road map
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
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Abstract
The invention discloses a crossroad navigation method and apparatus. The method comprises the following steps: planning a driving route on a navigation map according to the start point and the destination point; if the parameter value of the distance between a current position and the next crossroad reaches a first threshold value, obtaining the parameter values of the topological shape parameters of the next crossroad; if the parameter value of the distance between a current position and the next crossroad reaches a second threshold value, drawing a simulated icon of the next crossroad on the navigation map according to the parameter values of the topological shape parameters, and marking the driving direction on the simulated icon of the next crossroad according to the driving route; wherein the first threshold value is larger than the second threshold value. Correspondingly, the invention further discloses a crossroad navigation apparatus. By the provided crossroad navigation method and apparatus, the driving direction in the crossroad can be conveniently displayed.
Description
Technical field
The present invention relates to field of map navigation, particularly relate to a kind of air navigation aid and device of intersection.
Background technology
Use based on the navigation map of location technology is more and more extensive, user inputs start address and destination address on navigation map, navigation map can go out travel route according to the demand planning of user, and user can efficiently from start address to destination address according to travel route.When user arrives intersection, because there are many roads intersection, in order to the travel that indicating user is correct, navigation map adopts crossing schematic diagram target mode to carry out the correct travel direction of indicating user.In current navigation map, the mode processed under crossing signal icon adopts line, be that the similar intersection of polytype is designed same crossing and illustrated icon by graphic designer, be bundled in the storer of guider with the form of resource file, when user arrives intersection, a crossing signal icon is selected to be shown on screen according to crossing types value.
This mode Problems existing is: define when the crossing signal icon of intersection is and processes data under line, crossing schematic diagram target quantity is very limited, can not well represent intersection complicated and changeable, schematically strong not.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, provides a kind of air navigation aid and device of intersection.The instruction icon that can solve intersection in prior art indicates unclear problem.
In order to solve the problems of the technologies described above, embodiments provide a kind of air navigation aid of intersection, comprising:
On navigation map, travel route is cooked up according to origin and destination;
If the parameter value of the distance of current location and next intersection arrives first threshold, obtain the parameter value of the topology parameter of next intersection described;
If the parameter value of the distance of current location and next intersection described arrives Second Threshold, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; Wherein, described first threshold is greater than described Second Threshold.
Correspondingly, the embodiment of the present invention additionally provides a kind of guider of intersection, comprising:
Planning module, for cooking up travel route according to origin and destination on navigation map;
Acquisition module, if arrive first threshold for the parameter value of the distance of current location and next intersection, obtains the parameter value of the topology parameter of next intersection described;
Display module, if arrive Second Threshold for the parameter value of the distance of current location and next intersection described, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; Wherein, described first threshold is greater than described Second Threshold.
Implement the embodiment of the present invention, there is following beneficial effect:
The topology parameter of real-time next intersection of acquisition, on navigation map, simulation icon is drawn according to topology parameter, and put on mark travel direction at simulation drawing, the number of types of intersection is unrestricted, the crossing of various complexity can be represented, drivers directly can check that simulation icon determines the travel direction in intersection, is user-friendly to.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the air navigation aid of a kind of intersection that the embodiment of the present invention provides;
Fig. 2 is another schematic flow sheet of the air navigation aid of a kind of intersection that the embodiment of the present invention provides;
Fig. 3 is the principle schematic of the air navigation aid of a kind of intersection that the embodiment of the present invention provides;
Fig. 4 is the structural representation of the guider of a kind of intersection that the embodiment of the present invention provides;
Fig. 5 is another structural representation of the guider of a kind of intersection that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The guider of the embodiment of the present invention can be the terminal device being built-in with GPS navigation system, triones navigation system, Galileo navigation system or GNOSS navigational system, and also can be the terminal device of the navigational system being built-in with other, the present invention be restricted.
See Fig. 1, the schematic flow sheet of the air navigation aid of a kind of intersection provided for the embodiment of the present invention, in embodiments of the present invention, described method comprises:
S101, on navigation map, cook up travel route according to origin and destination.
Concrete, travel route is cooked up in the origin that guider inputs according to user on navigation map and destination, if the restrictive condition that user is arranged, such as, do not walk at a high speed, without charge station, avoid the restrictive condition that blocks up, also need to consider restrictive condition during planning form route.
If the parameter value of the distance of S102 current location and next intersection arrives first threshold, obtain the parameter value of the topology parameter of next intersection described.
Concrete, guider obtains the coordinate of the coordinate of current location and the central point of next intersection according to GPS module, the distance value of current location and next intersection can be calculated according to the parameter value of the distance of two coordinates, it should be noted that, the parameter value calculating the distance of current location and next intersection also needs the parameters such as the curvature of reference line, so that the accurate parameter value calculating current location and next intersection distance.Guider is in the process of moving along travel route, current location is constantly changing, the parameter value of the distance of current location and next intersection reduces gradually, when the parameter value of the distance of current location and next intersection arrives first threshold, obtain the parameter value of the topology parameter of next intersection, topology parameter comprises: the number of degrees of the angle between each road, the property value of the direction attribute of each road, direction attribute comprises two-way, two-way, south-north direction, east-west etc.
If the parameter value of the distance of S103 current location and next intersection described arrives Second Threshold, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; Wherein, described first threshold is greater than described Second Threshold.
Concrete, guider continues to move to next intersection, the parameter value of the distance between the current location of guider and next intersection reduces gradually, when the parameter value of the distance of current location and next intersection arrives Second Threshold, Second Threshold is less than first threshold, on navigation map, the simulation icon of next intersection is drawn according to the parameter value of the topology parameter of next intersection of S102 acquisition, simulation icon is identical with the topology of next intersection, the miniature version of next intersection can be considered as, guider is put on to mark out at simulation drawing and is needed travel direction simultaneously.Such as, simulation drawing is designated as crossroad, and travel direction is by east to west, then pointed to the arrow in west by central point in simulation drawing target mark.Wherein, simulation icon may be displayed on the position of the top of navigation map, is convenient to driver and checks, does not need to see map just can determine which direction running toward crossing.
Implement embodiments of the invention, the topology parameter of real-time next intersection of acquisition, on navigation map, simulation icon is drawn according to topology parameter, and put on mark travel direction at simulation drawing, the number of types of intersection is unrestricted, can represent the crossing of various complexity, drivers directly can check that simulation icon determines the travel direction in intersection, is user-friendly to.
See Fig. 2, be the air navigation aid of a kind of intersection that the embodiment of the present invention provides, in embodiments of the present invention, described method comprises:
S201, the simulation icon corresponding according to the parameter value generation of the topology parameter of each intersection of navigation map, and simulation icon is saved in the icon database of crossing.
Concrete, guider can generate corresponding simulation icon according to the parameter value of the topology parameter of each intersection in navigation map, the unique corresponding simulation icon in each intersection, be kept at by simulation icon in the icon database of crossing, icon database is arranged in the ROM (read-only memory) of this locality of guider.In order to reduce the demand of the memory capacity of the storer of guider, guider only can preserve simulation icon corresponding to crossing that user often passes in advance, and simulation icon corresponding to other crossings can generate in real time.
S202, on navigation map, cook up travel route according to origin and destination.
Concrete, guider according to preset algorithm on navigation map planning department by the travel route between origin to destination, be understandable that, when user departs from the travel route planned in advance, guider can recalculate a travel route.
If the parameter value of the distance of S203 current location and next intersection arrives first threshold, obtain the parameter value of the topology parameter of next intersection described.
Concrete, the parameter value of the distance of the current location of guider and next intersection can calculating according to the coordinate of the central point of the coordinate of user's current location and next intersection, guider is in the process of motion, the parameter value of the distance of guider and next intersection reduces gradually, when the parameter value of the current location of guider and the distance of next intersection arrives first threshold, obtain the parameter value of the topology parameter of next intersection, topology parameter is used for representing the topology of next intersection, topology parameter comprises the angle of each road of composition intersection, curvature, direction attribute and type attribute etc.
Exemplary, first threshold is 100 meters, the coordinate of guider Real-time Obtaining current location, and calculate the parameter value of the distance of the coordinate of the coordinate of current location and the central point of next intersection, when the parameter value of the distance calculated arrives 100 meters, obtain the topology parameter of next intersection, set an intersection by road 1, road 2, road 3 and road 4, article 4, road is vertical relation, article 4, road is two-way road, the angle that guider gets the adjacent road of next intersection is 90 °, and road attribute is two-way.In the application of reality, the topology parameter of next intersection is complicated more than right-angled intersection, and guider can obtain topology parameter according to the geometric parameter of each road, repeats no more herein.
If the parameter value of the distance of S204 current location and next intersection described arrives Second Threshold.
Concrete, when the parameter value of the distance of the current location of guider and next intersection arrives Second Threshold, obtain the identity information of next intersection, the identity of next intersection of identity information unique identification of next intersection, identity information can adopt the form of character string and/or letter to represent.Wherein, Second Threshold is less than first threshold.
The simulation icon mated with the identity information of next intersection described whether is there is in S205, inquiry crossing icon database.
Concrete, crossing icon database is for preserving the simulation icon of each intersection in navigation map, and due to the renewal of road or the restriction of storage space, the simulation icon of some intersection in navigation map is not kept in the icon database of crossing.Whether there is the simulation icon mated with the identity information of next intersection in the icon database of guider inquiry crossing, if YES, perform S206, otherwise perform S207.
S206, extract from the icon database of described crossing described coupling simulation icon and draw the simulation icon of described coupling at described navigation map, and put on mark travel direction according to described vehicle line at the simulation drawing of described coupling.
Concrete, guider extracts the simulation icon of next intersection from the icon database of crossing, can draw simulation icon, and put on mark travel direction according to travel route at simulation drawing above navigation map.
S207, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; The simulation icon of next intersection described is added in the icon database of described crossing.
Concrete, if there is not the simulation icon that next intersection is corresponding in the icon database of crossing, guider draws corresponding simulation icon according to the topology parameter of next intersection on navigation map, simulation icon is identical with the topology of next intersection, can be considered as the miniature version of next intersection, guider is put on to mark out at simulation drawing and is needed travel direction simultaneously.Such as, simulation drawing is designated as crossroad, and travel direction is by east to west, then pointed to the arrow in west by central point in simulation drawing target mark.Wherein, simulation icon may be displayed on the position of the top of navigation map, is convenient to user and checks, does not need to see map just can determine which direction running toward crossing.
See Fig. 3, be described below in conjunction with the method for specific embodiment to the embodiment of the present invention one and two, in Fig. 3,30 is current locations of guider, 31 is positions corresponding to the first threshold of next intersection, 32 is positions that next intersection Second Threshold is corresponding, 33 is positions of the central point of next intersection, and there is the parameter value of distance of the simulation icon of next intersection, current location and next intersection the top of navigation map.As can be seen from Figure 3, next intersection is made up of 4 roads, and guider travels according to the travel route of planning, shows the parameter value of the distance of current location and next intersection above navigation map in real time.When guider moves to 31 position, guider obtains the parameter value of the topology parameter of next intersection, when guider moves to 32 position, guider obtains the identity information of next crossing, in the crossing icon database of this locality, inquire about whether there is corresponding simulation icon according to identity information, if existed, extract corresponding simulation icon, display simulation icon and mark travel direction above navigation map; If there is not corresponding simulation icon in the icon database of crossing, obtain the topology parameter of next intersection, on navigation map, draw simulation drawing according to topology parameter and be marked with and identify travel direction.User has the simulation icon of travel direction can conveniently according to correct road driving according to mark.
See Fig. 4, the structural representation of the guider of a kind of intersection provided for the embodiment of the present invention, in embodiments of the present invention, described guider comprises planning module 10, acquisition module 11 and display module 12.
Planning module 10, for cooking up travel route according to origin and destination on navigation map.
Acquisition module 11, if arrive first threshold for the parameter value of the distance of current location and next intersection, obtains the parameter value of the topology parameter of next intersection described.
Display module 12, if arrive Second Threshold for the parameter value of the distance of current location and next intersection described, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; Wherein, described first threshold is greater than described Second Threshold.
The embodiment of the present invention and embodiment of the method one are based on same design, and its technique effect brought is also identical, and detailed process can refer to the description of embodiment of the method one, repeats no more herein.
See Fig. 5, another structural representation of the guider of a kind of intersection provided for the embodiment of the present invention, in embodiments of the present invention, described guider, except comprising planning module 10, acquisition module 11 and display module 12, also comprises: arrange module 13 and distance display module 14.
Arrange module 13, the parameter value for the topology parameter of each intersection according to described navigation map generates corresponding simulation icon, and is saved in the icon database of crossing by simulation icon.
Distance display module 14, for showing the parameter value of the distance of current location and next intersection described in real time on described navigation map.
Optionally, acquisition module 12 for obtain the coordinate of the Centroid of next intersection described, next intersection described each road between the number of degrees of angle and the property value of the direction attribute of each road described.
Optionally, acquisition module 12 is also for obtaining the identity information of next intersection described;
If described display module 13 arrives described Second Threshold for the parameter value of the distance of current location and next intersection described, in the icon database of inquiry crossing, whether there is the simulation icon mated with described identity information;
If exist, from the icon database of described crossing, extract the simulation icon of described coupling and draw the simulation icon of described coupling at described navigation map, and putting on mark travel direction according to described vehicle line at the simulation drawing of described coupling;
If do not exist, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; The simulation icon of next intersection described is added in the icon database of described crossing.
The embodiment of the present invention and embodiment of the method two are based on same design, and its technique effect brought is also identical, and detailed process can refer to the description of embodiment of the method two, repeats no more herein.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (10)
1. an air navigation aid for intersection, is characterized in that, comprising:
On navigation map, travel route is cooked up according to origin and destination;
If the parameter value of the distance of current location and next intersection arrives first threshold, obtain the parameter value of the topology parameter of next intersection described;
If the parameter value of the distance of current location and next intersection described arrives Second Threshold, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; Wherein, described first threshold is greater than described Second Threshold.
2. the method as described in claims 1, is characterized in that, the parameter value of the topology parameter of next intersection described in described acquisition comprises:
The number of degrees of angle between the coordinate of the Centroid of next intersection described in obtaining, each road of next intersection described and the property value of the direction attribute of each road described.
3. method as claimed in claim 1 or 2, is characterized in that,
If the parameter value of the distance of described front position and next intersection arrives first threshold, obtain the parameter value of the topology parameter of next intersection described, also comprise:
Obtain the identity information of next intersection described;
If the parameter value of the distance of described current location and next intersection described arrives Second Threshold, on navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described and comprise:
If the parameter value of the distance of current location and next intersection described arrives described Second Threshold, in the icon database of inquiry crossing, whether there is the simulation icon mated with described identity information;
If exist, from the icon database of described crossing, extract the simulation icon of described coupling and draw the simulation icon of described coupling at described navigation map, and putting on mark travel direction according to described vehicle line at the simulation drawing of described coupling;
If do not exist, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; The simulation icon of next intersection described is added in the icon database of described crossing.
4. the method as described in claim 1 or 3, is characterized in that, described on described navigation map, cook up travel route according to origin and destination before, also comprise:
Parameter value according to the topology parameter of each intersection of described navigation map generates corresponding simulation icon, and is saved in the icon database of crossing by simulation icon.
5. the method as described in claim 1-4 any one, is characterized in that, also comprises:
Described navigation map shows the parameter value of the distance of current location and next intersection described in real time.
6. a guider for intersection, is characterized in that, comprising:
Planning module, for cooking up travel route according to origin and destination on navigation map;
Acquisition module, if arrive first threshold for the parameter value of the distance of current location and next intersection, obtains the parameter value of the topology parameter of next intersection described;
Display module, if arrive Second Threshold for the parameter value of the distance of current location and next intersection described, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; Wherein, described first threshold is greater than described Second Threshold.
7. device as claimed in claim 6, it is characterized in that, described acquisition module for obtain the coordinate of the Centroid of next intersection described, next intersection described each road between the number of degrees of angle and the property value of the direction attribute of each road described.
8. device as claimed in claim 7, is characterized in that, described acquisition module is also for obtaining the identity information of next intersection described;
If the parameter value that described display module is used for the distance of current location and next intersection described arrives described Second Threshold, in the icon database of inquiry crossing, whether there is the simulation icon mated with described identity information;
If exist, from the icon database of described crossing, extract the simulation icon of described coupling and draw the simulation icon of described coupling at described navigation map, and putting on mark travel direction according to described vehicle line at the simulation drawing of described coupling;
If do not exist, on described navigation map, draw the simulation icon of next intersection described according to the parameter value of described topology parameter, and put on mark travel direction according to described vehicle line at the simulation drawing of next intersection described; The simulation icon of next intersection described is added in the icon database of described crossing.
9. the device as described in claim 6 or 8, is characterized in that, also comprises:
Arrange module, the parameter value for the topology parameter of each intersection according to described navigation map generates corresponding simulation icon, and is saved in the icon database of crossing by simulation icon.
10. the device as described in claim 6-9 any one, is characterized in that, also comprises:
Distance display module, for showing the parameter value of the distance of current location and next intersection described in real time on described navigation map.
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| CN108399646A (en) * | 2017-02-07 | 2018-08-14 | 腾讯科技（深圳）有限公司 | A kind of image rendering method and device |
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| CN110795994A (en) * | 2019-09-16 | 2020-02-14 | 腾讯科技（深圳）有限公司 | Intersection image selection method and device |
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