CN108489506B

CN108489506B - Method, device, terminal and medium for displaying enlarged intersection image

Info

Publication number: CN108489506B
Application number: CN201810175492.6A
Authority: CN
Inventors: 邵胜均; 孙晔; 郭欣; 朱举章
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2018-03-02
Filing date: 2018-03-02
Publication date: 2020-12-18
Anticipated expiration: 2038-03-02
Also published as: CN108489506A

Abstract

The embodiment of the invention discloses a method, a device, a terminal and a medium for displaying an enlarged intersection image, and relates to the technical field of navigation. The method comprises the following steps: before the vehicle runs through the continuous intersections, acquiring a navigation path between a first intersection in the continuous intersections and a last intersection in the continuous intersections; determining a central point of an enlarged intersection according to the navigation path; and mapping the central point to the center of a display area, and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections. The embodiment of the invention provides a display method, a display device, a display terminal and a display medium of an enlarged intersection, so that a user can clearly navigate a path passing through a continuous intersection before driving through the continuous intersection.

Description

Method, device, terminal and medium for displaying enlarged intersection image

Technical Field

The embodiment of the invention relates to the technical field of navigation, in particular to a method, a device, a terminal and a medium for displaying an enlarged intersection image.

Background

The enlarged intersection plays a very large role in navigation products. The enlarged intersection image not only has the function of reminding a user of turning, but also has a strong inducing function, and helps the user judge how the front intersection should be driven.

At present, no excellent navigation method aiming at continuous intersections exists.

Disclosure of Invention

The embodiment of the invention provides a display method, a display device, a display terminal and a display medium of an enlarged intersection, so that a user can clearly drive a navigation path passing through a continuous intersection before driving through the continuous intersection, and the problems are solved.

In a first aspect, an embodiment of the present invention provides a method for displaying an enlarged intersection, where the method includes:

before the vehicle runs through the continuous intersections, acquiring a navigation path between a first intersection in the continuous intersections and a last intersection in the continuous intersections;

determining a central point of an enlarged intersection according to the navigation path;

and mapping the central point to the center of a display area, and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections.

In a second aspect, an embodiment of the present invention further provides a display device for displaying an enlarged intersection, where the device includes:

the system comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring a navigation path between a first intersection in continuous intersections and a last intersection in the continuous intersections before driving through the continuous intersections;

the central point determining module is used for determining the central point of the enlarged intersection according to the navigation path;

and the display module is used for mapping the central point to the center of a display area and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections.

In a third aspect, an embodiment of the present invention further provides a terminal, where the terminal includes:

one or more processors;

storage means for storing one or more programs;

when the one or more programs are executed by the one or more processors, the one or more processors implement the method for displaying an enlarged intersection view according to any one of the embodiments of the present invention.

In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the method for displaying an enlarged intersection according to any one of the embodiments of the present invention.

According to the embodiment of the invention, all the intersections in the continuous intersections are placed in the enlarged intersection image for displaying before the vehicle passes through the continuous intersections, so that a user can clearly know the steering problem of the vehicle passing through a plurality of intersections in the continuous intersections by looking up the enlarged intersection images of the continuous intersections. The problem that a user cannot judge the turning direction of the second intersection in the continuous intersections in time is solved.

Because a plurality of intersections in the continuous intersections are displayed by one enlarged intersection image, the problems of visual impact caused by the alternate appearance of the two continuous enlarged intersection images and the flickering phenomenon caused by the rapid appearance and the rapid blanking of the enlarged intersection image of the second intersection are avoided.

In addition, the center point of the enlarged intersection map is determined according to the navigation path passing through the continuous intersection, so that the navigation path passing through the continuous intersection is positioned in the middle of the enlarged intersection map or is close to the middle of the enlarged intersection map as much as possible. Accordingly, the attention of the user is focused on the relationship between a plurality of intersections among the continuous intersections, not on a specific intersection. Thereby facilitating the user to know that the turn occurs at the second intersection of the continuous intersections. In addition, the area range containing continuous intersections drawn in the intersection enlarged view can be relatively reduced, so that the effect of saving the use flow of a user can be achieved when the intersection enlarged view is viewed.

Drawings

Fig. 1 is a flowchart of a method for displaying an enlarged intersection according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method for displaying an enlarged view of an intersection according to a second embodiment of the present invention;

fig. 3 is a schematic diagram of an intersection rotation effect according to a second embodiment of the present invention;

FIG. 4 is a schematic diagram of another intersection rotation effect provided by the second embodiment of the present invention;

fig. 5a is a schematic diagram illustrating an effect of the intersection before actual rotation according to the second embodiment of the present invention;

fig. 5b is a schematic diagram illustrating an effect of the intersection after actual rotation according to the second embodiment of the present invention;

FIG. 6 is a flow chart of a method for displaying an enlarged view of an intersection according to a third embodiment of the present invention;

fig. 7a is a schematic diagram of an enlarged view of a straight intersection according to a third embodiment of the present invention;

fig. 7b is a schematic diagram of an enlarged view of a non-straight intersection according to a third embodiment of the present invention;

FIG. 8 is a flow chart of a method for displaying an enlarged view of an intersection according to a fourth embodiment of the present invention;

FIG. 9a is a schematic structural diagram of a reference coordinate system according to a fourth embodiment of the present invention;

FIG. 9b is a schematic diagram of an enlarged intersection area mapped to a display area according to a fourth embodiment of the present invention;

FIG. 9c is a schematic diagram of another enlarged intersection area mapped to a display area according to the fourth embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an enlarged cross-section display device according to a fifth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal according to a sixth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1 is a flowchart of a method for displaying an enlarged intersection according to an embodiment of the present invention. The present embodiment is applicable to a case of navigating an intersection to be passed through, and typically the intersection may be a continuous intersection. The method may be performed by a device for displaying the enlarged intersection, which may be implemented by software and/or hardware. The device can be a car navigation device, and can also be other terminals (such as a mobile phone) with navigation functions. Referring to fig. 1, the method for displaying an enlarged intersection provided in this embodiment includes:

s110, before the vehicle runs through the continuous intersections, a navigation path between the first intersection in the continuous intersections and the last intersection in the continuous intersections is obtained.

The continuous intersections comprise at least two intersections, and the distance between any intersections is smaller than a second distance threshold. The threshold value can be set according to actual needs. The navigation path is essentially a path passing through the continuous intersections in the navigation path.

And S120, determining a central point of the enlarged intersection according to the navigation path.

The enlarged intersection comprises an intersection indicating part and a navigation indicating part. The intersection indicating part can be a real image which is output by constructing a three-dimensional model after shooting the real shape of the intersection, and can also be intersection indicating parts which are less in number and are obtained by summarizing and summarizing all intersections and then sorting. The navigation indication part can be an intersection turning mark or a navigation path which is displayed in a distinguishing way. The present embodiment does not set any limit to this. The intersection is displayed enlarged in the enlarged intersection view, and the navigation instructions for the continuous intersection can be clearly seen by the user through the enlarged intersection view.

Alternatively, the intersection to be passed through in the navigation path may be used as the center point of the enlarged intersection. And because the user's viewing habits of the graph are to focus attention on the center of the graph. Therefore, the determination method using the crossing to be passed as the center point of the enlarged crossing map focuses the attention of the user on the specific crossing to be passed. Thereby neglecting the steering problem of the next intersection.

Typically, the present embodiment determines the center point of the enlarged intersection map by using the navigation path passing through the continuous intersection, so that the navigation path passing through the continuous intersection is at the center position of the enlarged intersection map, or as close as possible to the middle position of the enlarged intersection map. Accordingly, the attention of the user is focused on the relationship between a plurality of intersections among the continuous intersections, not on a specific intersection. Thereby facilitating the user to know that the turn occurs at the second intersection of the continuous intersections. In addition, the area range containing continuous intersections drawn in the intersection enlarged view can be relatively reduced, so that the effect of saving the use flow of a user can be achieved when the intersection enlarged view is viewed.

Optionally, the center point of the enlarged intersection image can be determined according to the starting point and the end point of the navigation path. Specifically, the midpoint between the starting point and the end point of the navigation path is taken as the center point of the enlarged intersection. The center point of the enlarged intersection image can also be determined according to the shape of the navigation path, for example, if the shape of the navigation path is a straight line, the center point of the straight line is taken as the center point of the enlarged intersection image; and if the navigation path is circular, taking the circle center of the circle as the central point of the enlarged intersection image.

Typically, the center point of the enlarged intersection map can be determined according to the coordinates of all points in the navigation path and the driving-in direction of the continuous intersection. The method specifically comprises the following steps: determining the driving direction before the vehicle enters the first intersection in the continuous intersections as the driving direction; and determining the central point of the enlarged intersection in the driving direction according to the coordinates of all points in the navigation path. By the method, the navigation path before the vehicle enters the continuous intersection in the enlarged intersection image and the navigation path are displayed on the same straight line in the navigation map, so that the user can conveniently check the navigation path.

And S130, mapping the central point to the center of a display area, and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections.

Specifically, the center point can be mapped to the center of the display area according to any requirement in a preset mode, and the enlarged intersection image is displayed.

For the convenience of user viewing, the central point is mapped to the center of the display area, and displaying the enlarged intersection image may include:

determining a display scale of the enlarged intersection according to the navigation path and the size of the display area;

drawing the enlarged intersection images according to a display scale of the enlarged intersection images, a central point of the enlarged intersection images and a driving direction before reaching a first intersection in the continuous intersections;

and mapping the enlarged intersection image to the display area for displaying.

Specifically, first, a display scale in which a display size (length or width) of the navigation path occupies a set ratio (for example, 2/3) of the display area size (length or width) is determined as a display scale; then, the driving direction before reaching the first intersection in the continuous intersections is vertical to one edge of the enlarged intersection image, the center point of the enlarged intersection image is taken as the center, and the enlarged intersection image to be displayed is drawn according to a display scale; and finally, in order to facilitate the user to check the navigation path, the driving direction before the road reaches the first intersection in the continuous intersections is perpendicular to the bottom edge of the display area, the center point of the enlarged intersection image is used as the center of the display area, and the enlarged intersection image is mapped to the display area for display.

According to the technical scheme of the embodiment of the invention, all the intersections in the continuous intersections are displayed in the enlarged intersection image before the vehicle passes through the continuous intersections, so that a user can clearly know the steering problem of the vehicle passing through a plurality of intersections in the continuous intersections by looking up the enlarged intersection images of the continuous intersections. The problem that a user cannot judge the turning direction of the second intersection in the continuous intersections in time is solved.

Example two

Fig. 2 is a flowchart of a method for displaying an enlarged intersection according to a second embodiment of the present invention. The present embodiment is an alternative proposed on the basis of the above-described embodiments. Referring to fig. 2, the method for displaying an enlarged intersection provided in this embodiment includes:

s210, before the vehicle runs through the continuous intersections, a navigation path between the first intersection in the continuous intersections and the last intersection in the continuous intersections is obtained.

And S220, determining a central point of the enlarged intersection according to the navigation path.

And S230, mapping the central point to the center of a display area, and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections.

S240, after the road section passes through a first intersection in the continuous intersections, if the road section between the first intersection and a second intersection in the continuous intersections meets a set rotation condition, rotating the enlarged intersection according to the navigation path.

The set rotation condition can be set according to actual needs. For example, the set rotation condition may be that the distance between the first intersection and the second intersection is greater than a set distance threshold.

Typically, the set rotation condition may be: if the angle between the last link in the incoming path to the first intersection and the longest link in the passing path is greater than a set angle (for example, 45 degrees), and the length of the longest link in the passing path is greater than a set length (specifically, 1/12 with a set display width), rotating the enlarged view of the intersection, where the incoming path is the path before the first intersection in the navigation path, and the passing path is the path between two intersections in the continuous intersection. The path after leaving the second intersection is an exit path. It is to be understood that each navigation path comprises at least one road segment.

It should be emphasized that the center point of the enlarged cross-road image after rotation is the center point of the smallest circumscribed rectangle where the navigation path passing through the continuous cross-road is located. Compared with the method that the crossing which is about to pass is directly used as the central point of the enlarged crossing image after rotation, the method can enable the user to pay more attention to the crossing which is about to pass in the continuous crossing, and simultaneously enable the area range which is drawn in the enlarged crossing image and contains the continuous crossing to be relatively reduced, so that the effect of saving the using flow of the user can be achieved when the enlarged crossing image is viewed.

In addition, compared with the method that the intersection which is about to pass through is directly used as the central point of the enlarged cross-road image after rotation, the central point of the minimum circumscribed rectangle where the navigation path of the continuous intersection is located is used as the central point of the enlarged cross-road image after rotation, and the displacement difference of the central point is smaller than that of the central point of the enlarged cross-road image before rotation, so that the visual impact on a user is reduced.

In order to ensure that the visual impact is not formed on the user after the enlarged intersection image is rotated, the display width and height after the rotation are consistent with the width and height before the rotation. Referring to fig. 3, the left diagram is a schematic diagram of the intersection before rotation, and the right diagram is a schematic diagram of the corresponding intersection after rotation. Wherein, the navigation path between the first intersection 101 and the second intersection 102 in the continuous intersections is a passing path; the navigation path before the vehicle enters the first intersection 101 is an entrance path; the navigation path exiting the second intersection 102 is an exit path; each navigation path is composed of at least one road segment (the lower two figures in fig. 3 show a plurality of road segments constituting a passing path); the central point of the enlarged intersection is the central point of the minimum circumscribed rectangle 103 where the passing path is located; the enlarged intersection map is displayed in the display area 104.

Referring to fig. 4, in the enlarged view of the intersection after rotation, the driving direction of the road segment 105 passing through the first length of the route greater than the set length (specifically, 1/12 with the set display width) is displayed as the driving direction after rotation perpendicular to the bottom edge of the display area, so that the user can conveniently view the navigation route. Wherein, the left graph is the intersection schematic diagram before rotation, and the right graph is the corresponding intersection schematic diagram after rotation. Referring to fig. 5a and 5b, fig. 5a is a schematic diagram before the intersection rotates, and fig. 5b is a schematic diagram after the intersection rotates.

According to the technical scheme of the embodiment of the invention, when passing through the continuous intersection, if the road section between two adjacent intersections in the continuous intersection meets the set rotating condition, the road enlarged image is rotated when entering the path between the two adjacent intersections, so that the navigation indication direction of the current path in the displayed road enlarged image is consistent with the current driving direction. Therefore, the user can conveniently check the enlarged intersection image to determine the driving direction.

EXAMPLE III

Fig. 6 is a flowchart of a method for displaying an enlarged intersection according to a third embodiment of the present invention. This embodiment is an alternative to the above embodiment. Referring to fig. 6, the method for displaying an enlarged intersection provided in this embodiment includes:

s310, in the process of driving along the navigation path, if the distance between the current position and the branch road junction to be passed is detected to be smaller than a first distance threshold value, whether the branch road junction belongs to a continuous road junction or not is detected.

Wherein, the first distance threshold value can be determined according to actual needs. The branch road junction is a road junction which needs to change the driving direction.

S320, if the navigation path comprises at least two intersections of the branch intersection, and the distance between any two adjacent intersections is smaller than a second distance threshold, determining the at least two intersections as the continuous intersections.

The intersection other than the branch point may be a branch point or a normal intersection that does not require a change in the traveling direction.

In order to cooperate with voice navigation to guide the user, the yaw is avoided. Referring to fig. 7a, after the continuous intersections are determined, the continuous intersections are further determined, and if the last intersection in the continuous intersections is a branch intersection and the other intersections are straight intersections, the intersections are differentially marked from the first intersection, such as intersection 1, intersection 2, or the first intersection, the second intersection, and the like.

It should be noted that, in this embodiment, only the intersection that is going straight is marked, and referring to fig. 7b, the intersection that is not going straight is not marked. When the voice navigation is carried out on the non-straight intersection, the user is prompted to change the driving direction by driving to the right or to the left without reference to the intersection identification, so that the intersection marking is not needed.

S330, before the vehicle runs through the continuous intersections, a navigation path between the first intersection in the continuous intersections and the last intersection in the continuous intersections is obtained.

And S340, determining a central point of the enlarged intersection according to the navigation path.

And S350, mapping the central point to the center of a display area, and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections.

According to the technical scheme of the embodiment of the invention, the enlarged intersection display is only carried out on the continuous intersection containing the branch intersection, so that the display of the continuous intersection which is not concerned by a user and does not contain the branch intersection is avoided. Because the user needs to determine the turn at the intersection through the enlarged view of the intersection only when the driving direction needs to be changed.

Example four

Fig. 8 is a flowchart of a method for displaying an enlarged intersection according to a fourth embodiment of the present invention. The present embodiment is an alternative proposed on the basis of the above-described embodiments. Referring to fig. 8, the method for displaying an enlarged intersection provided in this embodiment includes:

s410, in the process of driving along the navigation path, if the fact that the distance between the current position and the branch road junction to be passed through is smaller than a first distance threshold value is detected, whether the branch road junction belongs to a continuous road junction or not is detected.

And S420, if the distance between any two adjacent intersections in the at least two intersections including the branch intersection in the navigation path is smaller than a second distance threshold, determining the two intersections which pass through the at least two intersections first and include the branch intersection as the continuous intersections.

For example, two intersections in the continuous intersection may be the branch intersection and its adjacent intersection that passes first, or may be the branch intersection and its adjacent intersection that passes later.

S430, before the vehicle runs through the continuous intersections, acquiring a navigation path between a first intersection and a second intersection in the continuous intersections.

And S440, determining a central point of the enlarged intersection according to the navigation path.

S450, mapping the central point to the center of a display area, and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections.

And S460, after the intersection passes through a first intersection in the continuous intersections, if the road section between the first intersection and a second intersection in the continuous intersections meets a set rotation condition, rotating the enlarged intersection according to the navigation path.

In practical application, the central point of the enlarged intersection is determined according to the navigation path, and the display of the enlarged intersection can be described as establishing a coordinate system, namely, referring to fig. 9a, taking a road section in front of a first intersection as a Y axis, and then randomly defining an X axis (for example, a position 30 meters away from the first intersection as an origin); converting all points (represented by longitude and latitude coordinates) on the navigation path into the coordinate system; calculating all points between intersection 1 (identified by reference numeral 903) and intersection 2 (identified by reference numeral 904), finding a maximum value Ymax (identified by reference numeral 902) and a minimum value Ymin (identified by reference numeral 901) on the Y-axis from the all points, and then calculating a center point 905, wherein the center point 905 is (0, (Ymax + Ymin)/2); referring to fig. 9a, 9b and 9c, the width and height (w, h) of an enlarged view (denoted by reference numeral 106 in fig. 9b and 9 c) of an intersection is calculated from all points on a navigation path (denoted by reference numeral 904 in fig. 9 a) between the intersection 1 (denoted by reference numeral 903 in fig. 9 a) and the intersection 2 (denoted by reference numeral 904 in fig. 9 a), which is proportional to the width and height (w1, h1) displayed by a display area (denoted by reference numeral 104 in fig. 9b and 9 c); all road networks within the range of (w, h) are drawn as intersection enlargement images, and the drawn intersection enlargement images (identified by reference numeral 106 in fig. 9b and 9 c) are mapped to display areas (identified by reference numeral 104 in fig. 9b and 9 c).

According to the technical scheme of the embodiment of the invention, the enlarged crossing map is displayed for the continuous crossing formed by the branch crossing and the adjacent crossing, so that the user can clearly know the crossing at which the driving direction is changed before passing through the continuous crossing. Meanwhile, the problems that the display scale is small and the display range is large, but the display at the actual intersection is small and inconvenient for a user to check due to the fact that too many intersections are displayed are avoided.

It should be noted that, through the technical teaching of the above embodiments, a person skilled in the art will have an incentive to combine any of the implementations described in the above embodiments to realize the display of the continuous intersection.

EXAMPLE five

Fig. 10 is a schematic structural diagram of a display device of an enlarged intersection according to a fifth embodiment of the present invention. Referring to fig. 10, the display device of an enlarged intersection provided in this embodiment includes: an acquisition module 10, a center point determination module 20 and a display module 30.

The system comprises an acquisition module 10, a navigation module and a display module, wherein the acquisition module is used for acquiring a navigation path between a first intersection in continuous intersections and a last intersection in the continuous intersections before the vehicle runs through the continuous intersections;

a central point determining module 20, configured to determine a central point of the enlarged intersection according to the navigation path;

and the display module 30 is configured to map the central point to the center of the display area, and display the enlarged intersection image, where the enlarged intersection image includes all intersections in the continuous intersections.

In addition, the center point of the enlarged intersection map is determined according to the navigation path passing through the continuous intersection, so that the navigation path passing through the continuous intersection is positioned in the middle of the enlarged intersection map for display. Accordingly, the attention of the user is focused on the relationship between a plurality of intersections among the continuous intersections, not on a specific intersection. Thereby facilitating the user to know that the turn occurs at the second intersection of the continuous intersections.

Further, the center point determining module 20 includes: a center point determining unit.

The central point determining unit is used for determining the central point of the enlarged intersection according to the coordinates of all points in the navigation path and the driving direction of the continuous intersection.

Further, the display module 30 includes: a scale determining unit, an enlargement drawing unit, and a display unit.

The scale determining unit is used for determining a display scale of the enlarged intersection according to the navigation path and the size of the display area;

an enlarged view drawing unit for drawing the enlarged view of the intersection according to a display scale of the enlarged view of the intersection, a center point of the enlarged view of the intersection, and a traveling direction before reaching a first intersection of the consecutive intersections;

and the display unit is used for mapping the enlarged intersection image to the display area for displaying.

Further, the display device of the enlarged intersection map further includes: and a continuous intersection detection module.

The continuous intersection detection module is used for detecting whether the branch intersection belongs to the continuous intersection or not before the navigation path between the first intersection in the continuous intersections and the last intersection in the continuous intersections is acquired before the continuous intersection is driven, and if the distance between the current position and the branch intersection to be passed is detected to be smaller than a first distance threshold value in the process of driving along the navigation path.

Further, the continuous intersection detection module comprises: and a continuous intersection determining unit.

The continuous intersection determining unit is used for determining at least two intersections as the continuous intersections if the distance between any two adjacent intersections is smaller than a second distance threshold value in at least two intersections including the branch intersection in the navigation path.

Further, the display device of the enlarged intersection map further includes: and rotating the module.

The rotation module is used for mapping the central point to the center of a display area and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections, and after the enlarged intersection image passes through a first intersection in the continuous intersections, if a road section between the first intersection and a second intersection in the continuous intersections meets a set rotation condition, the enlarged intersection image is rotated according to the navigation path.

EXAMPLE six

Fig. 11 is a schematic structural diagram of a terminal according to a sixth embodiment of the present invention. Fig. 11 illustrates a block diagram of an exemplary terminal 12 suitable for use in implementing embodiments of the present invention. The terminal 12 shown in fig. 11 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.

As shown in fig. 11, the terminal 12 is in the form of a general purpose computing device. The components of the terminal 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.

Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Terminal 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by terminal 12 and includes both volatile and nonvolatile media, removable and non-removable media.

The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. The terminal 12 can further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 11, and commonly referred to as a "hard drive"). Although not shown in FIG. 11, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.

The terminal 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that enable a user to interact with the terminal 12, and/or any devices (e.g., network card, modem, etc.) that enable the terminal 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, the terminal 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet) via the network adapter 20. As shown, the network adapter 20 communicates with the other modules of the terminal 12 via the bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the terminal 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

The processing unit 16 executes various functional applications and data processing by running a program stored in the system memory 28, for example, to implement any of the above-described intersection enlargement display methods provided by the embodiments of the present invention.

EXAMPLE seven

The seventh embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for displaying an enlarged view of an intersection according to any one of the embodiments of the present invention, where the method includes:

Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for displaying an enlarged view of an intersection, comprising:

mapping the central point to the center of a display area, and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections;

wherein, according to the navigation path, determining the central point of the enlarged intersection image comprises: determining the driving direction before the vehicle enters the first intersection in the continuous intersections as the driving direction; and determining the central point of the enlarged intersection in the driving direction according to the coordinates of all points in the navigation path.

2. The method of claim 1, wherein the center point is mapped to a center of a display area, and wherein displaying the enlarged intersection view comprises:

and mapping the enlarged intersection image to the display area for displaying.

3. The method according to claim 1, wherein after mapping the central point to a center of a display area and displaying the enlarged intersection map, wherein the enlarged intersection map includes all intersections of the consecutive intersections, the method further comprises:

after passing through a first intersection in the continuous intersections, if a road section between the first intersection and a second intersection in the continuous intersections meets a set rotation condition, rotating the enlarged intersection image according to the navigation path;

the central point of the enlarged intersection image after rotation is the central point of the minimum circumscribed rectangle where the navigation path passing through the continuous intersection is located.

4. The method of claim 1, further comprising, prior to obtaining a navigation path between a first one of the consecutive intersections and a last one of the consecutive intersections before traveling through the consecutive intersections:

in the process of driving along the navigation path, if the fact that the distance between the current position and the branch road junction to be passed through is smaller than a first distance threshold value is detected, whether the branch road junction belongs to a continuous road junction or not is detected.

5. The method of claim 4, wherein detecting whether the branch junction belongs to a continuous junction comprises:

and if the distance between any two adjacent intersections in the at least two intersections including the branch intersection in the navigation path is smaller than a second distance threshold, determining the at least two intersections as the continuous intersections.

6. A display device for enlarged images of intersections, comprising:

the display module is used for mapping the central point to the center of a display area and displaying the enlarged intersection image, wherein the enlarged intersection image comprises all intersections in the continuous intersections;

7. The apparatus of claim 6, further comprising:

the rotation module is used for mapping the central point to the center of a display area and displaying the enlarged crossing map, wherein the enlarged crossing map comprises all crossings in the continuous crossings, and after the enlarged crossing map passes through a first crossing in the continuous crossings, if a road section between the first crossing and a second crossing in the continuous crossings meets a set rotation condition, the enlarged crossing map is rotated according to the navigation path;

8. A terminal, characterized in that the terminal comprises:

one or more processors;

storage means for storing one or more programs;

when the one or more programs are executed by the one or more processors, the one or more processors implement the method for displaying an enlarged view of an intersection according to any one of claims 1 to 5.

9. A computer-readable storage medium on which a computer program is stored, the program, when executed by a processor, implementing a method of displaying an enlarged view of an intersection according to any one of claims 1 to 5.