JP2010008144A - Guide display device, guide display method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide display device suitable for guiding and displaying a route to a destination, or the like, concerning the guide display device for displaying a present position of a motor vehicle or the like on a map, and guiding the motor vehicle to a prescribed destination. <P>SOLUTION: This guide display device for guiding and displaying the route 83 to the destination performs following operations: the present position 81 and a traveling direction of one's own vehicle are detected; a map 84 including a road along which the own vehicle travels is stored; when the own vehicle travels from the present position 81 to the destination, a displacement point 82 where the traveling direction is changed on the road shown on the map 84 is detected; a displacement point image 85 showing the displacement point is outputted by imaging the front of the own vehicle; a distance from the own vehicle to the displacement point 82 is measured; the map 84 and the displacement point image 85 are arranged side by side; and color images 86-88 shown by a color correlated with the distance are displayed in piles on the map 84 and the displacement point image 85. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a guidance display device that displays a current location of a vehicle or the like on a map and guides the vehicle to a predetermined destination. And a program for realizing them on a computer.

A so-called car navigation system that guides a car or the like to a destination is known. However, in this car navigation, there is a driver who feels that the display indicating the traveling direction presented before the car enters the intersection or the like is difficult to understand. Therefore, Patent Document 1 measures the distance between the host vehicle and the intersection with a camera or the like mounted on the automobile, and displays an arrow indicating the traveling direction that changes in accordance with the distance on the image captured by the in-vehicle camera. I am trying to devise.
JP 9-325042 A

  However, in the configuration disclosed in Patent Document 1, when an automobile or the like is in front of the own vehicle, the arrow is superimposed on the image of the preceding automobile, so that it is difficult for the driver to know the arrow. There was a case. In addition, there are cases where it is difficult to make the 3D video of the in-vehicle camera correspond to the 2D map video. Accordingly, there is a need for a new method suitable for displaying a route to a destination in a guidance display device that displays the current location of a vehicle or the like on a map and guides the vehicle to a predetermined destination.

  The present invention has been made in view of the above problems, and displays a current location of a car or the like on a map and guides and displays a route to the destination in a guidance display device that guides the car to a predetermined destination. It is an object of the present invention to provide a guidance display device, a guidance display method, and a program for realizing these on a computer.

In order to achieve the above object, a guidance display device according to the first aspect of the present invention provides:
A guidance display device for guiding and displaying a route to a destination,
A position detector for detecting the current position and the traveling direction of the host vehicle;
A storage unit for storing a map including a road on which the vehicle travels;
A displacement detector that detects a displacement point at which the traveling direction changes on the road shown on the map when the host vehicle travels from the current position to the destination;
An imaging unit that images the front of the host vehicle and outputs a displacement point image indicating the displacement point;
A measuring unit for measuring a distance from the host vehicle to the displacement point;
A display unit that arranges the map and the displacement point image side by side, and displays a color image indicated by a color associated with the distance, superimposed on the map and the displacement point image;
It is characterized by providing.

  The display unit may display the color image with changing transparency, and may display the color image with emphasis as it is closer to the displacement point.

  The color image may be an image showing a concentric circle centered on the current position of the host vehicle.

In order to achieve the above object, a guidance display method according to the second aspect of the present invention includes:
This is a guidance display method executed by a guidance display device for guiding and displaying a route to a destination having a position detection unit, a storage unit, a displacement detection unit, an imaging unit, a measurement unit, and a display unit. And
A position detecting step in which the position detecting unit detects a current position and a traveling direction of the host vehicle;
A storage step in which the storage unit stores a map including a road on which the host vehicle travels;
A displacement detection step in which the displacement detection unit detects a displacement point at which the traveling direction changes on the road shown on the map when the host vehicle travels from the current position to the destination;
An imaging step in which the imaging unit images the front of the host vehicle and outputs a displacement point image indicating the displacement point;
A measuring step in which the measuring unit measures a distance from the host vehicle to the displacement point;
A display step in which the display unit arranges the map and the displacement point image side by side, and displays a color image indicated by a color associated with the distance so as to overlap the map and the displacement point image;
It is characterized by providing.

In order to achieve the above object, a program according to the third aspect of the present invention provides:
A program for causing a computer to guide and display a route to a destination, wherein the program displays the computer,
A position detector for detecting the current position and the traveling direction of the host vehicle;
A storage unit for storing a map including a road on which the vehicle travels;
A displacement detector that detects a displacement point at which the traveling direction changes on the road shown on the map when the host vehicle travels from the current position to the destination;
An imaging unit that images the front of the host vehicle and outputs a displacement point image indicating the displacement point;
A measuring unit for measuring a distance from the host vehicle to the displacement point;
A display unit that arranges the map and the displacement point image side by side and displays a color image indicated by a color associated with the distance so as to overlap the map and the displacement point image;
It is made to function as.

  ADVANTAGE OF THE INVENTION According to this invention, the present location, such as a motor vehicle, is displayed on a map, In the guidance display apparatus which guides the said motor vehicle to a predetermined destination, the route to the destination can be guided and displayed.

  Hereinafter, one of the embodiments of the guidance display device of the present invention will be described. However, the embodiment is for facilitating the understanding of the principle of the present invention, and the scope of the present invention is described below. The present invention is not limited to this, and other embodiments in which those skilled in the art appropriately replace the configurations of the following embodiments are also included in the scope of the present invention.

  A guidance display device according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 1, a guidance display device 100 used in a navigation system applied to an embodiment of the present invention includes a GPS antenna 10, a GPS module 11, and a communication antenna 20 used for communication with an external device, The communication module 21 used for communication with an external apparatus, the sensor module 30, the control part 40, HDD50, the memory | storage part 60, the operation part 70, the display part 80, and the imaging part 90 are provided.
The guidance display device 100 is mounted on a vehicle such as an automobile, for example. Then, the guidance display device 100 displays a guidance route indicating a route from the current location to the destination together with the map information, and appropriately guides the driver (automobile operator) to the destination.

  The GPS (Global Positioning System) antenna 10 includes a helical antenna, a dielectric antenna, a patch type planar antenna, or the like. The GPS antenna 10 receives a spread spectrum modulated satellite radio wave transmitted from a predetermined GPS satellite.

The GPS module 11 is tuned to satellite radio waves transmitted from a plurality of GPS satellites and received by the GPS antenna 10. After tuning, each satellite radio wave is despread and demodulated to obtain a plurality of satellite reception signals. The difference in arrival time of each satellite radio wave is calculated using each acquired satellite reception signal. Based on the calculation result, position information including latitude, longitude, altitude, and the like is generated.
The GPS module 11 supplies the generated position information to the control unit 40 at every predetermined timing.

  The communication module 21 converts radio waves transmitted from an external communication device and received by the communication antenna 20 into data usable by the control unit 40. After the conversion, the communication module 21 supplies the converted data to the control unit 40.

The sensor module 30 includes a vehicle speed sensor and a gyro sensor. The sensor module 30 sequentially detects the speed, direction (traveling direction), and the like of the vehicle (own vehicle) on which the guidance display device 100 is mounted, and supplies the detected speed information to the control unit 40.
The sensor module 30 includes a distance measurement sensor that measures the distance between the vehicle and the object. The sensor module 30 supplies the measured distance information to the control unit 40.

  The control unit 40 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and controls the entire navigation system. Further, the control unit 40 reads and executes a program or the like stored in advance in the storage unit 60. For example, a route calculation from the current location to the destination, a navigation operation based on the current location and the route, and the like are performed.

A HDD (Hard Disk Drive) 50 stores predetermined map image information for display and road information representing a road network. The HDD 50 supplies the map image information, road information, and the like to the control unit 40 via a drive device (not shown).
The HDD 50 that stores road information and the like is an example, and may be a recording medium such as a DVD-ROM. In a portable navigation device or the like, a semiconductor memory is used.

  The storage unit 60 includes, for example, a hard disk device, a DVD-RAM, and the like. The storage unit 60 stores an operation program to be executed by the control unit 40, various data necessary for processing, and the like.

  The operation unit 70 includes a predetermined operation panel, a remote controller (transmitter), and the like. The operation unit 70 supplies various information to the control unit 40 in accordance with an input operation by a user (driver). For example, when an arbitrary point on the map image is designated for route guidance according to the user's operation, the operation unit 70 inputs position information indicating the designated point and supplies it to the control unit 40.

  The display unit 80 includes an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube), or the like, and displays an image generated by the control unit 40.

  The imaging unit 90 is constituted by, for example, a CCD (Charge Coupled Device) camera. As shown in FIG. 2, the imaging unit 90 is attached to the front portion of the vehicle, and supplies an image of the front portion of the vehicle to the control unit 40.

Next, various processes executed by the guidance display device 100 according to the embodiment of the present invention will be described with reference to the drawings.
It is assumed that the program that defines the processing executed by the guidance display device 100 is stored in advance in the ROM of the control unit 40. For example, the storage unit 60 is in a state where guide route information for defining the guide route from the current location to the destination is stored, and the user inputs a start instruction via the operation unit 70. In response to this start instruction, the process is started.

  The guidance display process will be described with reference to FIGS. FIG. 3 is a flowchart for explaining the guidance display process.

First, the control unit 40 controls the GPS antenna 10 and the GPS module 11 to acquire current position information of the own vehicle. In addition, the control unit 40 acquires surrounding map information corresponding to the current position information of the vehicle from the HDD 50 or the like. FIG. 4 shows an example of an image in which the current location of the vehicle is displayed on a map. As shown in FIG. 4, the control unit 40 displays on the display unit 80 a current location 81 of the vehicle, a displacement point 82 existing before the vehicle heads to the destination, and a route 83 to the destination on a map 84. (Step S11). As the vehicle moves, the current location 81 and the map 84 change.
Here, the displacement point refers to a point at which the traveling direction of the host vehicle changes, such as a crossroad, a street, or a sharp curve. Further, the displacement point is not limited to one point, and may be a region indicating a plurality of points and a predetermined range.

  Next, the control unit 40 detects the displacement point 82 existing on the path 83 from the current location 81 to the destination, and based on the sensor module 30 or the GPS antenna 10 and the GPS module 11, the current location 81 to the displacement point 82 is detected. The distance is measured (step S12). For example, the sensor module 30 measures the distance to the displacement point 82 in front of the host vehicle based on a laser or the like. Further, the GPS module 11 acquires the latitude and longitude between the current location 81 and the displacement point 82 and measures the distance between the current location 81 and the displacement point 82.

  Next, the control unit 40 determines whether or not the measured distance is within a predetermined distance (for example, 1 km) (step S13). The control unit 40 can use either distance information measured by the sensor module 30 and the GPS module 11, and can also compare the average distance of both distances with a predetermined distance. Here, the predetermined distance is not limited to 1 km and is arbitrary.

  When it is determined that the distance is within the predetermined distance (step S13; Yes), the imaging unit 90 images the front of the vehicle as shown in FIG. 5 (step S14). Note that the imaging unit 90 can also continuously capture the front of the vehicle even if the distance is equal to or greater than a predetermined distance.

  On the other hand, when it is determined that the distance is equal to or greater than the predetermined distance (step S13; No), the process proceeds to step S11, and the control unit 40 continues to display the map 84 and the like on the display unit 80.

  Next, as shown in FIG. 6, the control unit 40 synthesizes the map 84 and the captured image 85 captured by the imaging unit 90 and displays them on the display unit 80 (step S15). Note that the size and position of the map 84 and the captured image 85 displayed on the display unit 80 are arbitrary.

Next, the display unit 80 displays distance guidance based on the distance between the current location 81 and the displacement point 82 measured by the sensor module 30 or the like (step S16). Here, the distance guidance is a guidance display in which the distance from the displacement point 82 to the current location 81 is divided by color as shown in FIG. For example, when the distance from the displacement point 82 is 0 m or more and less than 100 m, the display unit 80 is red (distance guidance 88), when it is 100 m or more and less than 300 m, yellow (distance guidance 87), and when the distance is 300 m or more and less than 800 m. The distance guidance is displayed as blue (distance guidance 86). The display unit 80 creates semi-transparent distance guides 86 to 88 and displays them superimposed on the map 84 and the captured image 85. As shown in FIGS. 7 and 8, the display unit 80 reduces or enlarges the shape of the distance guides 86 to 88 and decreases the number of distance guides according to the distance between the current location 81 and the displacement point 82. When the distance between the current location 81 and the displacement point 82 is reduced due to the movement of the host vehicle, the display unit 80 gradually decreases the range of the distance guide 86 and expands the range of the distance guides 87 and 88. Further, when the distance becomes shorter, the distance guide 86 is deleted, and only the guide distances 87 and 88 are displayed.
Moreover, the display part 80 can also display the arrow 89 which shows the direction of a destination, as shown in FIG.

  Although the distance guidance is displayed in three stages, it can be displayed in any number of stages. The distance and color set from the displacement point 82 are also arbitrary. Furthermore, the distance guidance can be displayed in gradation.

  Further, as shown in FIG. 9, the display unit 80 can display circular distance guides 86 to 88 centering on the current location 81 of the own vehicle. In addition, the shape of distance guidance is not limited to a strip | belt shape and circular shape, Radial, semicircle shape, etc. are arbitrary.

  Next, the control part 40 determines whether the own vehicle passed the displacement point 82 (step S17). Based on this determination, it is determined whether or not to cancel the distance guidance.

  When it determines with not having passed (step S17; No), the display part 80 continues the display of the distance guidance 86 to 88 as shown in FIG.

  On the other hand, when it determines with having passed (step S17; Yes), it changes to step S11. The control unit 40 and the display unit 80 display the map 84 and continue guidance to the destination.

  As described above, according to the present invention, the present location of a car or the like is displayed on a map, and the guidance display device that guides the car to a predetermined destination can guide and display the route to the destination. . The user can know the distance between the current location and the displacement point from the map on which the distance guidance is displayed and the captured image in front of the vehicle. In addition, since the distance guidance is displayed in a translucent manner, even when there is an obstacle such as another vehicle that shields the displacement point in the captured image, the user can know the distance, and the route to the destination can be obtained. Can be recognized.

  The present invention is not limited to the above-described embodiment, and various modifications and applications are possible.

  The present invention is not limited to a guidance display device, and can be applied to general navigation devices such as a PDA (Personal Digital Assistance) and a navigation device mounted on a mobile phone.

  Furthermore, the present invention is not limited to a dedicated machine and can be realized using a general computer having a GPS function and the like. For example, a program for causing a computer to execute all or part of the processing shown in FIG. 3 is stored in a computer-readable recording medium such as a flexible disk, HDD, DVD, MO (Magnet Optical Disk), or Blu-ray disc. And distribute. You may install this in another computer and may perform the above-mentioned process. Similarly, the program may be distributed / downloadable via a communication network.

It is a block diagram which shows the structure of the guidance display apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the attachment position of an imaging part. It is a flowchart which shows a guidance display process. It is a figure which shows an example of a map. It is a figure which shows an example of the picked-up image image | photographed by the imaging part. It is a figure which shows an example which synthesize | combined and displayed the map and the picked-up image. It is a figure which shows strip | belt-shaped distance guidance. It is a figure which shows the change state of FIG. It is a figure which shows circular shaped distance guidance.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Guide display apparatus 10 GPS antenna 11 GPS module 20 Communication antenna 21 Communication module 30 Sensor module 40 Control part 50 HDD
60 Storage Unit 70 Operation Unit 80 Display Unit 90 Imaging Unit

Claims (5)

A guidance display device for guiding and displaying a route to a destination,
A position detector for detecting the current position and the traveling direction of the host vehicle;
A storage unit for storing a map including a road on which the vehicle travels;
A displacement detector that detects a displacement point at which the traveling direction changes on the road shown in the map when the host vehicle travels from the current position to the destination;
An imaging unit that images the front of the host vehicle and outputs a displacement point image indicating the displacement point;
A measuring unit for measuring a distance from the host vehicle to the displacement point;
A display unit that arranges the map and the displacement point image side by side, and displays a color image indicated by a color associated with the distance, superimposed on the map and the displacement point image;
A guidance display device comprising: The display unit displays the color image by changing the transparency, and emphasizes the color image as it is closer to the displacement point.
The guidance display device according to claim 1. The color image is an image showing concentric circles centered on the current position of the host vehicle.
The guidance display device according to claim 1 or 2, characterized in that. This is a guidance display method executed by a guidance display device for guiding and displaying a route to a destination having a position detection unit, a storage unit, a displacement detection unit, an imaging unit, a measurement unit, and a display unit. And
A position detecting step in which the position detecting unit detects a current position and a traveling direction of the host vehicle;
A storage step in which the storage unit stores a map including a road on which the host vehicle travels;
A displacement detection step in which the displacement detection unit detects a displacement point at which the traveling direction changes on the road shown on the map when the host vehicle travels from the current position to the destination;
An imaging step in which the imaging unit images the front of the host vehicle and outputs a displacement point image indicating the displacement point;
A measuring step in which the measuring unit measures a distance from the host vehicle to the displacement point;
A display step in which the display unit arranges the map and the displacement point image side by side and displays a color image indicated by a color associated with the distance so as to overlap the map and the displacement point image;
A guidance display method characterized by comprising: A program for causing a computer to guide and display a route to a destination, wherein the program displays the computer,
A position detector for detecting the current position and the traveling direction of the host vehicle;
A storage unit for storing a map including a road on which the vehicle travels;
A displacement detector that detects a displacement point at which the traveling direction changes on the road shown in the map when the host vehicle travels from the current position to the destination;
An imaging unit that images the front of the host vehicle and outputs a displacement point image indicating the displacement point;
A measuring unit for measuring a distance from the host vehicle to the displacement point;
A display unit that arranges the map and the displacement point image side by side, and displays a color image indicated by a color associated with the distance, superimposed on the map and the displacement point image;
A program characterized by functioning as

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