WO2014038044A1

WO2014038044A1 - Display device, display method, program, and recording medium

Info

Publication number: WO2014038044A1
Application number: PCT/JP2012/072769
Authority: WO
Inventors: 仁長谷川; 輝希川▲崎▼; 孝史結城; 潤一布宮
Original assignee: パイオニア株式会社; パイオニアシステムテクノロジー株式会社
Priority date: 2012-09-06
Filing date: 2012-09-06
Publication date: 2014-03-13

Abstract

A display device displays object information, which shows an object located in front of a moving body, so that the object is superimposed on a front landscape or an image in which the front landscape is captured. A first display control means begins to display the object information on the basis of the distance between the object and the current location of the moving body, and displays the object information after modifying the size thereof on the basis of the distance. A second display control means displays the object information at a predetermined size from when the first display control means begins to display the object information until a predetermined time elapses. As a consequence, it is possible to ensure appropriate visibility of the object information when beginning to display the object information.

Description

Display device, display method, program, and recording medium

The present invention relates to the technical field of displaying information.

In recent years, a technology for displaying a guidance image such as navigation information in a manner superimposed on a real landscape in the traveling direction of a vehicle or on a real image obtained by photographing a real landscape (hereinafter, such display) Is appropriately called “AR (Augmented Reality) display”). For example, in Patent Literature 1, image information indicating a predetermined object is displayed superimposed on the actual scenery that the occupant is viewing, so that the occupant can visually recognize the apparent position of the object in the scenery. It is described to inform. Further, in Patent Document 2, in a display system that projects an image on a windshield of a vehicle, a signboard image (virtual signboard) is specified so as to be fixed at a specific point in a scene viewed through the windshield. It describes that the display position and display size of a virtual signboard are changed in accordance with the change in the positional relationship between the point and the vehicle.

JP 2005-98912 A JP 2005-189725 A

In the technique described in Patent Document 2 above, the display size of the virtual signboard is increased as the vehicle approaches the specific point, that is, as the distance between the vehicle and the specific point becomes shorter. For this reason, when the display of the virtual signboard is started, the display size of the virtual signboard is small because the vehicle is away from the specific point. Therefore, in the technique described in Patent Document 2, the virtual signboard tends to be difficult to recognize at the start of the display of the virtual signboard.

The above is one example of problems to be solved by the present invention. The present invention provides a display device capable of appropriately ensuring the visibility of object information at the start of displaying object information in a configuration in which predetermined object information is displayed on a front landscape or an image obtained by capturing a front landscape. The main object is to provide a display method, a program, and a recording medium.

According to the first aspect of the present invention, the display device that displays the object information indicating the feature existing in front of the moving body over the front landscape or the image obtained by capturing the front landscape is the current position of the mobile body. First display control means for starting display of the object information based on the distance from the feature and changing the size of the object information based on the distance, and the first display control means, And a second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the display of the object information is started.

In the invention described in claim 6, object information indicating a feature existing in front of a moving object is displayed on a three-dimensional map image generated as viewed from the driver's viewpoint based on map data. The display device to be started first displays the object information based on the distance between the current position of the moving body and the feature, and changes the size of the object information based on the distance and displays the first information. Control means; and second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information. To do.

In the invention according to claim 7, the display method executed by the display device that displays the object information indicating the feature existing in front of the moving object over the front landscape or the image obtained by capturing the front landscape is the above-described display method. A first display control step of starting display of the object information based on a distance between a current position of a moving body and the feature, and changing and displaying the size of the object information based on the distance; A second display control step of displaying the object information in a predetermined size until a predetermined time has elapsed after the first display control step starts displaying the object information.

According to an eighth aspect of the present invention, a program executed by a display device including a computer that displays object information indicating a feature existing in front of a moving object on a front landscape or an image obtained by capturing a front landscape. A first display control means for starting display of the object information based on a distance between the current position of the moving body and the feature, and changing and displaying the size of the object information based on the distance; The computer is caused to function as second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information. .

The invention according to claim 9 is characterized in that the recording medium records the program according to claim 8.

The structural example of the system which concerns on an Example is shown. 1 shows a schematic configuration of a navigation device. 1 shows a schematic configuration of a head-up display. The example of a display by a head-up display is shown. The figure for demonstrating the reason for performing the display control which concerns on a present Example is shown. The figure for demonstrating the example of a display by a present Example is shown.

In one aspect of the present invention, a display device that displays object information indicating a feature existing in front of a moving object in a superimposed manner on a front landscape or an image obtained by capturing a front landscape, First display control means for starting display of the object information based on the distance to the feature and changing the size of the object information based on the distance, and the first display control means for the object Second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the display of information is started.

The above display device is preferably used for displaying object information indicating a feature existing in front of a moving object in a superimposed manner on a front landscape or an image of a front landscape. For example, “features” are intersections, traffic lights, signs, signboards, facilities, natural objects such as mountains, and the like. “Object information” is information relating to such a feature, and is displayed using symbols such as text, icons, tags, comments, balloons, and arrows. The first display control means starts displaying the object information based on the distance between the current position of the moving object and the feature, and changes the size of the object information based on the distance to display the object information. On the other hand, the second display control means displays the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information. Specifically, the second display control means displays the object information in a size different from the display size set according to the distance by the first display control means. Accordingly, it is possible to appropriately ensure the visibility of the object information at the start of displaying the object information.

In one aspect of the display device, the first display control unit starts displaying the object information when the distance between the current position of the moving body and the feature is equal to or less than a predetermined distance, and the distance The display size of the object information is increased as the value becomes shorter, and the second display control unit sets the size larger than the display size corresponding to the predetermined distance at which the first display control unit starts displaying the object information. The object information is displayed using the predetermined size. Thereby, the visibility of the object information at the start of display can be more effectively ensured.

In another aspect of the above display device, the display device further includes an acquisition unit that acquires designation information that designates the type of the feature, and the second display control unit corresponds to the feature designated by the designation information. Only the object information is displayed in the predetermined size. According to this aspect, by displaying only a part of the object information in a predetermined size, it is possible to appropriately suppress a decrease in visibility of the front scenery.

In another mode of the above display device, the display device further includes guide means for guiding a route to a destination using the feature as a mark, and the second display control means is a feature used by the guide means for guidance. Only the corresponding object information is displayed in the predetermined size. Also according to this aspect, it is possible to appropriately suppress a decrease in visibility of the front scenery by displaying only a part of the object information in a predetermined size.

Preferably, in the above display device, the second display control means changes the predetermined distance according to a road type on which the moving body is traveling or a traveling speed of the moving body. Thereby, for example, when the road type is an expressway or a main road, or when the traveling speed is high, object information about a feature located at a certain distance can be displayed earlier.

In another aspect of the present invention, object information indicating features existing in front of a moving object is displayed on a 3D map image generated as viewed from the driver's viewpoint based on map data. The display device starts display of the object information based on a distance between the current position of the moving object and the feature, and changes the size of the object information based on the distance and displays the first display control. And second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information.

In still another aspect of the present invention, the display method executed by the display device that displays the object information indicating the feature existing in front of the moving object over the front landscape or the image obtained by capturing the front landscape is described above. A first display control step of starting display of the object information based on a distance between a current position of a moving body and the feature, and changing and displaying the size of the object information based on the distance; A second display control step of displaying the object information in a predetermined size until a predetermined time has elapsed since the first display control step started displaying the object information.

According to still another aspect of the present invention, a program executed by a display device including a computer that displays object information indicating a feature existing in front of a moving object on a front landscape or an image obtained by capturing a front landscape. A first display control means for starting display of the object information based on a distance between the current position of the moving body and the feature, and changing and displaying the size of the object information based on the distance; The computer functions as second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information.

The above program can be suitably handled in a state of being recorded on a recording medium.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[System configuration]
FIG. 1 shows a configuration example of a system according to the present embodiment. As shown in FIG. 1, the system includes a navigation device 1 and a head-up display 2. The system is mounted on a vehicle.

The navigation device 1 has a function of performing route guidance from the departure point to the destination. The navigation device 1 can be, for example, a stationary navigation device installed in a vehicle, a PND (Portable Navigation Device), or a mobile phone such as a smartphone.

The head-up display 2 is a device that visually recognizes an image corresponding to various information supplied from the navigation device 1 as a virtual image from the position (eye point) of the driver's eyes. The head-up display 2 is an example of the “display device” in the present invention.

If the navigation device 1 is a mobile phone such as a smartphone, the navigation device 1 may be held by a cradle or the like. In this case, the navigation device 1 may exchange information with the head-up display 2 via a cradle or the like.

[Configuration of navigation device]
FIG. 2 shows the configuration of the navigation device 1. As shown in FIG. 2, the navigation device 1 includes a self-supporting positioning device 10, a GPS receiver 18, a system controller 20, a disk drive 31, a data storage unit 36, a communication interface 37, a communication device 38, an interface 39, and a display unit 40. A voice output unit 50 and an input device 60.

The self-supporting positioning device 10 includes an acceleration sensor 11, an angular velocity sensor 12, and a distance sensor 13. The acceleration sensor 11 is made of, for example, a piezoelectric element, detects vehicle acceleration, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle when the direction of the vehicle is changed, and outputs angular velocity data and relative azimuth data. The distance sensor 13 measures a vehicle speed pulse composed of a pulse signal generated with the rotation of the vehicle wheel.

The GPS receiver 18 receives radio waves 19 carrying downlink data including positioning data from a plurality of GPS satellites. The positioning data is used to detect the absolute position of the vehicle (hereinafter also referred to as “current position”) from latitude and longitude information.

The system controller 20 includes an interface 21, a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23, and a RAM (Random Access Memory) 24, and controls the entire navigation device 1.

The interface 21 performs an interface operation with the acceleration sensor 11, the angular velocity sensor 12, the distance sensor 13, and the GPS receiver 18. From these, vehicle speed pulses, acceleration data, relative azimuth data, angular velocity data, GPS positioning data, absolute azimuth data, and the like are input to the system controller 20. The CPU 22 controls the entire system controller 20. The ROM 23 includes a nonvolatile memory (not shown) in which a control program for controlling the system controller 20 is stored. The RAM 24 stores various data such as route data preset by the user via the input device 60 so as to be readable, and provides a working area to the CPU 22.

A system controller 20, a disk drive 31 such as a CD-ROM drive or a DVD-ROM drive, a data storage unit 36, a communication interface 37, a display unit 40, an audio output unit 50 and an input device 60 are mutually connected via a bus line 30. It is connected to the.

The disk drive 31 reads and outputs content data such as music data and video data from a disk 33 such as a CD or DVD under the control of the system controller 20. The disk drive 31 may be either a CD-ROM drive or a DVD-ROM drive, or may be a CD and DVD compatible drive.

The data storage unit 36 is configured by, for example, an HDD or the like, and stores various data used for navigation processing such as map data.

The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and receives various types of information. The interface 37 performs an interface operation of the communication device 38 and inputs information received by the communication device 38 to the system controller 20 or the like.

The display unit 40 displays various display data on a display device such as a display under the control of the system controller 20. Specifically, the system controller 20 reads map data from the data storage unit 36. The display unit 40 displays the map data read from the data storage unit 36 by the system controller 20 on the display screen. The display unit 40 includes a graphic controller 41 that controls the entire display unit 40 based on control data sent from the CPU 22 via the bus line 30, and image information that can be displayed immediately, such as a VRAM (Video） RAM) memory. A buffer memory 42 that temporarily stores, a display control unit 43 that controls display of a display 44 such as a liquid crystal based on image data output from the graphic controller 41, and a display 44 are provided. The display 44 functions as an image display unit, and includes, for example, a liquid crystal display device having a diagonal size of about 5 to 10 inches and is mounted near the front panel in the vehicle.

The audio output unit 50 performs D / A (Digital-to-Analog) conversion of audio digital data sent from the CD-ROM drive 31, DVD-ROM 32, RAM 24, or the like via the bus line 30 under the control of the system controller 20. A D / A converter 51 to perform, an amplifier (AMP) 52 that amplifies the audio analog signal output from the D / A converter 51, and a speaker 53 that converts the amplified audio analog signal into sound and outputs the sound into the vehicle. It is prepared for.

The input device 60 includes keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is disposed around the front panel and the display 44 of the main body of the in-vehicle electronic system mounted in the vehicle. When the display 44 is a touch panel system, the touch panel provided on the display screen of the display 44 also functions as the input device 60.

In the present embodiment, the navigation device 1 generates object information indicating features existing in front of the vehicle, and transmits the object information to the head-up display 2. In this case, the CPU 22 in the navigation device 1 determines the front of the vehicle based on the current position of the vehicle acquired from the autonomous positioning device 10 and / or the GPS receiver 18 and the map data stored in the data storage unit 3. The object information indicating the feature existing in is generated. For example, “features” are intersections, traffic lights, signs, signboards, facilities, natural objects such as mountains, and the like. “Object information” is information relating to such a feature, and is stored in the data storage unit 3 as map data in association with a position on the map (position coordinates). For example, “object information” is displayed using icons, tags, comments, balloons, and the like.

[Configuration of head-up display]
FIG. 3 is a schematic configuration diagram of the head-up display 2. As shown in FIG. 3, the head-up display 2 according to this embodiment includes a light source unit 3 and a combiner 9, and is attached to a vehicle including a front window 25, a ceiling portion 27, a hood 28, a dashboard 29, and the like. It is done.

The light source unit 3 is installed on the ceiling portion 27 in the vehicle compartment via the

support members

5a and 5b, and emits light constituting the object information described above toward the combiner 9. Specifically, the light source unit 3 generates an original image (real image) of the display image in the light source unit 3 based on the control of the control unit 4, and emits light constituting the image to the combiner 9. The virtual image “Iv” is visually recognized by the driver via the combiner 9. For example, the light source unit 3 has a light source such as a laser light source or an LCD light source, and emits light from the light source.

The combiner 9 is configured as a half mirror having a reflection function and a transmission function. The combiner 9 projects the display image emitted from the light source unit 3 and reflects the display image to the driver's eye point Pe to display the display image as a virtual image Iv. And the combiner 9 has the support shaft part 8 installed in the ceiling part 27, and rotates the support shaft part 8 as a spindle. The support shaft portion 8 is installed, for example, in the vicinity of the ceiling portion 27 in the vicinity of the upper end of the front window 25, in other words, the position where a sun visor (not shown) for the driver is installed. The support shaft portion 8 may be installed instead of the above-described sun visor.

The control unit 4 is built in the light source unit 3 and has a CPU, RAM, ROM, etc. (not shown), and performs general control of the head-up display 2. The control unit 4 can communicate with the navigation device 1 and receives object information from the navigation device 1 as described above. Then, the control unit 4 performs control to display the object information so as to be superimposed on the forward scenery observed through the combiner 9. That is, control for AR display is performed. Specifically, the control unit 4 performs control so that object information as a virtual image is visually recognized with respect to a predetermined feature in the forward scenery observed through the combiner 9. Although details will be described later, the control unit 4 corresponds to an example of “first display control means” and “second display control means” in the present invention.

FIG. 4 shows a display example by the head-up display 2. Specifically, FIG. 4 shows an example of an image visually recognized by the driver through the combiner 9. In this example, a POI (Point Of Interest) 71 relating to the facility 70 existing in the actual scenery in front of the vehicle is displayed as object information. The control unit 4 in the head-up display 2 performs display control so that the POI 71 as a virtual image is visually recognized at a position corresponding to the facility 70 in the forward scenery observed through the combiner 9.

In addition, as shown in FIG. 3, it is not limited to displaying object information using the combiner 9, You may display object information using a windshield instead of the combiner 9. FIG. The light source unit 3 is not limited to being installed on the ceiling portion 27, and the light source unit 3 may be installed inside the dashboard 29 instead of the ceiling portion 27.

[Control method]
Next, in the present embodiment, a control method performed by the control unit 4 in the head-up display 2 will be specifically described.

In the present embodiment, the control unit 4 in the head-up display 2 starts displaying object information about the feature when the distance between the current position of the vehicle and the predetermined feature reaches a predetermined distance. The display size of the object information is increased as the distance between the current position of the vehicle and the feature becomes shorter. In this case, in the present embodiment, when the display of the object information is started, the control unit 4 specifically, the current position and the location of such a vehicle until the predetermined time elapses after the display of the object information is started. Object information is displayed in a predetermined size larger than the display size corresponding to the distance without displaying the object information in a display size corresponding to the distance to the object. Then, after a predetermined time has elapsed, the control unit 4 displays the object information with a display size corresponding to the distance between the current position of the vehicle and the feature. Note that the control unit 4 receives information on the current position of the vehicle (obtained by the autonomous positioning device 10 and / or GPS receiver 18) and information on the position of the feature (map data in the data storage unit 3) from the navigation device 1. Such a display control is performed by obtaining the distance between the current position of the vehicle and the feature from the information.

Here, the reason for performing the display control as described above will be described with reference to FIG. FIG. 5 is a diagram for explaining a problem that occurs when the object information is displayed with a display size corresponding to the distance between the current position of the vehicle and the feature at the start of displaying the object information. FIG. 5A shows a state in which the vehicle 80 approaches the feature 81 on which object information is to be displayed. In this case, the vehicle 80 approaches the feature 81 by proceeding in the order of the position P1, the position P2, the position P3, and the position P4. The position P1 is a position where the distance between the vehicle 80 and the feature 81 is the above-described predetermined distance, that is, a position where display of object information is started.

FIGS. 5B, 5C, 5D, and 5E show examples of object information 82a to 82d (82) displayed when the vehicle 80 reaches positions P1, P2, P3, and P4, respectively. Is schematically shown. Specifically, FIGS. 5B to 5E show examples of the object information 82 that the driver visually recognizes through the combiner 9 (the front scenery is not shown here). In this example, as shown in FIGS. 5B to 5E, the display size of the object information 82 increases as the distance between the vehicle 80 and the feature 81 decreases, that is, as the vehicle 80 approaches the feature 81. is doing. Specifically, the display size of the object information 82 is increased as the distance becomes shorter so that the distance between the vehicle 80 and the feature 81 and the display size of the object information 82 are in an inversely proportional relationship. This is because when the vehicle 80 approaches the feature 81, the size of the feature 81 that is actually visually recognized increases, so that the object information 82 is displayed in accordance with the size of the feature 81 that is visually recognized. It is.

Here, when the display size of the object information 82 is increased as the distance between the vehicle 80 and the feature 81 becomes shorter as described above, the distance between the vehicle 80 and the feature 81 is longer when the display of the object information 82 is started. Therefore, the display size of the object information 82 is reduced (see FIG. 5B). Therefore, it can be said that it is difficult to recognize the object information 82 when the display of the object information 82 is started.

Therefore, in the present embodiment, when the display of the object information is started, the control unit 4 displays the object information in a predetermined size larger than the display size corresponding to the distance between the current position of the vehicle and the feature. This makes it possible to ensure the visibility of the object information at the start of displaying the object information.

FIG. 6 is a diagram for explaining a display example according to the present embodiment. FIG. 6A is the same diagram as FIG. 5A. FIGS. 6B, 6C, 6D, and 6E show examples of object information 83a to 83d (83) displayed when the vehicle 80 reaches positions P1, P2, P3, and P4, respectively. Is schematically shown. Specifically, FIGS. 5B to 5E show examples of the object information 83 that the driver visually recognizes through the combiner 9 (the front scenery is not shown here).

In the present embodiment, as shown in FIG. 6B, the control unit 4 starts the display of the object information 83. Specifically, the control unit 4 starts the display of the object information 83 until a predetermined time elapses. The object information 83 is displayed in a predetermined size larger than the display size (see FIG. 5B) corresponding to the distance between the vehicle 80 and the feature 81. Specifically, the control unit 4 displays the object information 83 in such a size that the user (driver) can appropriately recognize until a predetermined time has elapsed from the start of display. Thereby, at the start of displaying the object information 83, the user can appropriately recognize the object information 83. Then, after the predetermined time has elapsed, the control unit 4 displays the display size (FIG. 5 (c) to FIG. 5) corresponding to the distance between the vehicle 80 and the feature 81, as shown in FIGS. The object information 83 is displayed with the same display size as the object information 82 shown in FIG.

[Modification]
Below, the modification suitable for an above-described Example is demonstrated. It should be noted that the following modifications can be applied to the above-described embodiments in any combination.

(Modification 1)
In the above-described embodiment, the display of the object information is started when the distance between the current position of the vehicle and the feature becomes a predetermined distance. Or you may change according to the running speed of a vehicle. In one example, the control unit 4 in the head-up display 2 makes the predetermined distance longer when the road type is a highway or a main road than when the road type is a narrow street. This is because, when the road type is an expressway or a highway, it is preferable to display object information about features located at some distance away early. In another example, the control unit 4 makes the predetermined distance longer when the traveling speed is high than when the traveling speed is low. This is because it is preferable to display the object information about the feature located at some distance earlier even when the traveling speed is high.

(Modification 2)
In the above-described embodiment, basically all the object information is displayed with a predetermined size larger than the display size according to the distance between the current position of the vehicle and the feature, but some objects are displayed. Only the information may be displayed in a predetermined size larger than the display size corresponding to the distance between the current position of the vehicle and the feature. This is because if the display of all the object information in such a predetermined size is started, the visibility of the front scenery viewed through the combiner 9 may be reduced. .

In one example, the control unit 4 acquires designation information that designates the type of the feature, and only the object information corresponding to the feature designated by the designation information is the distance between the current position of the vehicle and the feature. The display is started at a predetermined size larger than the display size corresponding to. For example, the control unit 4 acquires designation information for designating a type such as a convenience store or a gas station from the user.

In another example, when the control unit 4 guides the route to the destination using the feature as a landmark, only the object information corresponding to the feature used for the guidance is used for the current position of the vehicle and the feature. Display is started at a predetermined size larger than the display size corresponding to the distance to For example, the control unit 4 starts displaying only the object information related to the convenience store near the intersection to be turned at a size larger than the display size according to the distance between the current position of the vehicle and the feature. In addition, the control part 4 acquires the guidance information for performing the route guidance to the destination from the navigation apparatus 1, and guides the route to the destination based on the guidance information.

(Modification 3)
In the description of FIG. 1 and the like, the head-up display 2 receives the object information from the navigation device 1 and performs control to display the object information. However, the configuration to which the present invention is applicable is not limited to this. In another example, the navigation device 1 performs control to display object information as shown in the above-described embodiment, transmits information after such control to the head-up display 2, and the head-up display 2 The received information can be displayed as it is. In this case, the CPU 22 of the navigation device 1 performs part or all of the control performed by the control unit 4 of the head-up display 2 as described above. In this example, the navigation device 1 corresponds to the “display device” in the present invention, or the navigation device 1 and the head-up display 2 correspond to the “display device” in the present invention.

In yet another example, the head-up display 2 can perform control to generate object information and display the object information without communicating with the navigation device 1. In this case, the head-up display 2 may be provided with a self-supporting positioning device such as a GPS receiver and / or a distance sensor, and map data or the like may be stored in a memory.

(Modification 4)
The present invention is not limited to application to the head-up display 2 and the navigation device 1, and can be similarly applied to a head-mounted display.

Further, the present invention can also be applied to a display device that displays object information superimposed on an image (camera image) obtained by capturing a forward landscape. For example, the present invention includes a navigation device (including a mobile terminal such as a smartphone) that captures a real landscape in the traveling direction of the vehicle with a camera and displays the object information superimposed on the camera image obtained by the imaging on the display of the device itself. ) Can be applied.

Furthermore, the present invention can also be applied to a display device that displays object information superimposed on a three-dimensional (3D) map image generated as viewed from the driver's viewpoint based on map data. . That is, the present invention is not limited to application to a configuration in which AR display is performed using a front landscape or a camera image obtained by capturing a front landscape.

(Modification 5)
In the embodiment described above, from the viewpoint of ensuring the visibility of the object information at the start of display, the display of the object information is started at a size larger than the display size corresponding to the distance between the current position of the vehicle and the feature. It was. In another example, instead of increasing the display size in this way, a balloon such as a name can be added at the start of display of object information, or a sound effect can be generated at the start of display of object information. . This also ensures the visibility of the object information at the start of display.

The present invention can be applied to a head-up display, a navigation device (including a mobile phone such as a smartphone), and the like.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Head-up display 3 Light source unit 4 Control part 9 Combiner

Claims

A display device that displays object information indicating features existing in front of a moving object in a superimposed manner on a front landscape or an image of a front landscape,
First display control means for starting display of the object information based on the distance between the current position of the moving body and the feature, and changing and displaying the size of the object information based on the distance;
Second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information;
A display device comprising:
The first display control means starts the display of the object information when the distance between the current position of the moving body and the feature is equal to or less than a predetermined distance, and the display size of the object information decreases as the distance decreases. Increase the
The second display control means displays the object information using a size larger than the display size corresponding to the predetermined distance at which the first display control means starts displaying the object information as the predetermined size. The display device according to claim 1.
An acquisition means for acquiring designation information for designating the type of the feature;
3. The display device according to claim 1, wherein the second display control unit displays only the object information corresponding to the feature designated by the designation information in the predetermined size.
It further comprises guide means for guiding a route to the destination using the feature as a landmark,
3. The display device according to claim 1, wherein the second display control unit displays only object information corresponding to a feature used for guidance by the guide unit in the predetermined size. 4.
3. The display device according to claim 2, wherein the second display control means changes the predetermined distance according to a type of road on which the moving body is traveling or a traveling speed of the moving body.
A display device that displays object information indicating a feature existing in front of a moving object on a three-dimensional map image generated as viewed from a driver's viewpoint based on map data,
First display control means for starting display of the object information based on the distance between the current position of the moving body and the feature, and changing and displaying the size of the object information based on the distance;
Second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information;
A display device comprising:
A display method that is executed by a display device that displays object information indicating a feature existing in front of a moving object over a front landscape or an image of the front landscape,
A first display control step of starting display of the object information based on the distance between the current position of the moving object and the feature, and changing and displaying the size of the object information based on the distance;
A second display control step for displaying the object information in a predetermined size until a predetermined time elapses after the first display control step starts displaying the object information;
A display method comprising:
A program executed by a display device including a computer that displays object information indicating a feature existing in front of a moving object in a superimposed manner on a front landscape or an image obtained by capturing a front landscape,
First display control means for starting display of the object information based on the distance between the current position of the moving object and the feature, and changing and displaying the size of the object information based on the distance;
Second display control means for displaying the object information in a predetermined size until a predetermined time elapses after the first display control means starts displaying the object information;
A program for causing the computer to function as:
A recording medium on which the program according to claim 8 is recorded.