JP2016090515A - Information display device, control method, program, and storage medium - Google Patents

Abstract

An information display device that allows a driver to appropriately recognize which position in a landscape a specified point corresponds to is provided.
A navigation apparatus 1 displays a guide image on a head-up display 2 so as to overlap with a scenery around a vehicle Ve. The navigation device 1 recognizes the next guide point where the vehicle Ve is scheduled to pass, and extracts features existing around the guide point from the map data. Then, the navigation device 1 causes the head-up display 2 to display a feature distance image indicating the distance from the current position to the feature at a position corresponding to the feature included in the landscape.
[Selection] Figure 5

Description

  The present invention relates to a technique for displaying an image so as to be superimposed on a landscape image or to be superimposed on a landscape.

  2. Description of the Related Art Conventionally, there is a technology for allowing a driver to recognize a distance to an intersection to be turned in a navigation device that guides a route. For example, in Patent Document 1, when an arrow image indicating the direction to be bent next is displayed on an image generated by a camera that captures the front, the navigation device displays the arrow image larger as it approaches the intersection to be bent. Is disclosed.

JP 2011-1498353 A

  With the technique of Patent Document 1, the driver can recognize that the intersection to be bent is approaching based on the size of the arrow image, while the driver can accurately determine the position on the landscape where the intersection to be bent is. It is difficult to make them recognize. Therefore, the main object of the present invention is to provide an information display device that allows the driver to appropriately recognize which position in the landscape the designated point corresponds to.

  The invention described in claim is an information display device that displays an image on a display unit so as to be superimposed on a landscape image obtained by photographing a landscape around a moving body or to be superimposed on the landscape in appearance. A point acquiring means for acquiring a designated point where the body is scheduled to pass; a feature extracting means for extracting a feature existing around the designated point from a map database; and a distance from the current position of the mobile body to the feature And display control means for causing the display means to display information at a position corresponding to the feature contained in the landscape.

  The invention described in the claims is a control executed by an information display device that causes a display unit to display an image so as to be superimposed on a landscape image obtained by capturing a landscape around a moving body or to be superimposed on the landscape. A method for obtaining a designated point where the mobile object is scheduled to pass, a feature extracting step for extracting a feature existing around the designated point from a map database, and a current position of the mobile object And a display control step of displaying the distance information from the feature to the feature on the display means at a position corresponding to the feature included in the landscape.

  The invention described in the claims is a program executed by a computer that causes a display unit to display an image so as to be superimposed on a landscape image obtained by capturing a landscape around a moving body or to be superimposed on the landscape. A point acquisition unit that acquires a designated point that the mobile object is scheduled to pass through; a feature extraction unit that extracts a feature existing around the designated point from a map database; and The computer is caused to function as display control means for causing the display means to display distance information to an object at a position corresponding to the feature included in the landscape.

1 shows a schematic configuration of a display system. 1 shows a schematic configuration of a navigation device. 1 shows a schematic configuration of a head-up display. The function structure of a light source unit is shown. It is a flowchart which shows the display process of a feature distance image. It is a display example of the front window based on the display processing of the feature distance image. The schematic structure of the display system which concerns on a modification is shown. An outline of the processing when the passenger performs route guidance verbally to the driver is shown. The schematic structure of the head-up display which concerns on a modification is shown.

  In one preferred embodiment of the present invention, the information display device superimposes on a landscape image obtained by photographing a landscape around a moving object, or displays information on a display unit so as to overlap the landscape in appearance. A display device for acquiring a designated point where the mobile object is scheduled to pass; a feature extracting means for extracting a feature existing around the designated point from a map database; and a current state of the mobile object Display control means for causing the display means to display distance information from a position to the feature at a position corresponding to the feature included in the landscape.

  The information display device causes the display unit to display an image so as to be superimposed on a landscape image obtained by capturing a landscape around the moving body or to overlap the landscape in appearance. The information display device includes point acquisition means, feature extraction means, and display control means. The point acquisition means acquires a designated point where the mobile object is scheduled to pass. The feature extracting means extracts features existing around the designated point from the map database. The display control means causes the display means to display distance information from the current position of the moving object to the feature at a position corresponding to the feature included in the landscape. By doing in this way, the information display apparatus can make an observer recognize the distance of the feature in the scenery which exists around the designated point suitably. Therefore, the information display device can make the observer preferably know which position on the landscape the designated point corresponds to.

  In one aspect of the information display device, the point acquisition unit acquires a guide point included in a route to a destination as the designated point, and the display control unit determines the distance to the feature as the landscape. And displaying the distance information from the current position of the moving body to the guide point on the display means. In this way, the information display device displays the distance information of the features in the scenery existing around the guidance point along with the distance information to the guidance point, thereby observing which position on the landscape the guidance point corresponds to Can be grasped suitably by a person.

  In another aspect of the information display device, the information display device further includes voice output means for outputting information for guiding the route to the destination by voice, and the point acquisition means is a guide point included in the route. The display control means displays the distance to the feature at a position corresponding to the feature included in the landscape, and from the current position of the moving body to the guidance point. Distance information is output from the audio output means. As described above, the information display device notifies the observer of the distance information to the guide point by voice, and also displays the distance information of the feature in the scenery existing around the guide point. It is possible for the observer to appropriately grasp which position on the landscape the point corresponds to.

  In another aspect of the information display device, the feature extraction unit is configured to detect a feature whose distance from the current position of the mobile body is closer to the designated point and a feature farther than the designated point, respectively. Extract one or more. By this aspect, the information display apparatus can make a driver | operator grasp | ascertain the distance of the feature in front and behind a designated point, and can grasp | ascertain the distance feeling with respect to a designated point suitably.

  In another aspect of the information display device, the feature extracting means exists in the vicinity of the designated point while excluding features that are not included in the landscape image obtained by photographing the scenery around the moving body. Extract features. According to this aspect, the information display device can suitably suppress giving an uncomfortable feeling to the observer due to displaying the distance information on the feature that the observer cannot see.

  In another preferred embodiment of the present invention, an information display device is executed that displays an image on a display unit so as to be superimposed on a landscape image obtained by capturing a landscape around a moving body or to be superimposed on the landscape. It is a control method, and a point acquisition step for acquiring a designated point that the moving body is scheduled to pass through, a feature extraction step for extracting features existing around the designated point from a map database, and a current state of the moving body A display control step of displaying distance information from a position to the feature on the display unit at a position corresponding to the feature included in the landscape. By executing this control method, the information display device can make the observer preferably know which position on the landscape the designated point corresponds to.

  In still another embodiment of the present invention, there is provided a program executed by a computer that causes a display unit to display an image so as to be superimposed on a landscape image obtained by capturing a landscape around a moving body or to be superimposed on the landscape. A point acquisition unit that acquires a designated point that the mobile object is scheduled to pass through; a feature extraction unit that extracts a feature existing around the designated point from a map database; and The computer is caused to function as display control means for causing the display means to display distance information to an object at a position corresponding to the feature included in the landscape. By executing this program, the computer can allow the observer to appropriately grasp which position on the landscape the designated point is. Preferably, the program is stored in a storage medium.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following, “feature” refers to an object that can be expressed on a map, and includes, for example, facilities, stores, signboards, signs, traffic lights, posts, trees, and the like.

[Schematic configuration]
(1) System Configuration FIG. 1 shows a configuration example of a display system 100 according to the embodiment. As shown in FIG. 1, the display system 100 is mounted on a vehicle Ve, and includes a navigation device 1 and a head-up display 2. Then, the display system 100 displays a virtual image indicating the distance to the feature in the vicinity of the next guidance point (that is, the right / left turn point) in association with the feature on the real landscape, thereby displaying the distance to the guidance point. Make the driver sense the distance accurately.

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

  The head-up display 2 generates an image (also referred to as “guide image”) that displays information for assisting driving, and visually recognizes the guide image as a virtual image from the position (eye point) of the driver's eyes. In the present embodiment, the head-up display 2 displays, as a guide image, an image indicating a distance to a feature near the guide point (also simply referred to as “feature distance image”), an image indicating a guide route, and the next guide point. An image indicating the distance to the vehicle and the direction of travel at the guide point, an image displaying information related to the traveling of the vehicle Ve such as the vehicle speed, and an image indicating a facility mark. Various information necessary for displaying the guidance image is supplied from the navigation device 1 to the head-up display 2. The head-up display 2 is an example of the “display unit” in the present invention.

  When the navigation device 1 is a mobile terminal 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.

(2) 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 autonomous 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 the acceleration of the vehicle Ve, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle Ve when the direction of the vehicle Ve 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 wheel of the vehicle Ve.

  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 (ie, current position) of the vehicle Ve 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 apparatus 1.

  For example, in the present embodiment, the system controller 20 generates a guidance image to be displayed on the head-up display 2 at the time of route guidance to the destination set by user input. Specifically, in this embodiment, the system controller 20 generates a feature distance image as a guide image and displays it on the head-up display 2 when the distance to the next guide point is within a predetermined distance. . In this case, first, the system controller 20 recognizes the position and traveling direction of the vehicle Ve based on the measurement information of the GPS receiver 18 and the measurement information of the autonomous positioning device 10. Then, the control unit 55 extracts, from the map data stored in the data storage unit 36, the features that are present at a position that can be visually recognized by the driver via the front window 25 and that are in the vicinity of the next guide point. . Then, the system controller 20 calculates the distance between the current position and the above recognized feature, and generates a feature distance image indicating the distance. Then, the system controller 20 associates the feature distance image with the feature on the target landscape by the same method as displaying the facility mark in association with the facility on the landscape, and the head-up display 2. To display.

  The system controller 20 functions as a “point acquisition unit”, “feature extraction unit”, “display control unit”, “voice output unit”, and a computer that executes a program in the present invention.

  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 a map database (also simply referred to as “map data”). The map data includes road data represented by links corresponding to roads and nodes corresponding to road connecting portions, and feature information about each feature. The feature information includes, for example, position information and appearance (shape) information of the feature.

  The communication device 38 includes, for example, an FM tuner, a beacon receiver, a portable terminal, a dedicated communication module, and the like, and via a communication interface 37, a traffic jam distributed from a VICS (registered trademark, Vehicle Information Communication System) center Receive road traffic information such as traffic information and other information. Further, the communication device 38 transmits to the head-up display 2 information related to the guide image generated by the system controller 20 and the display position of the guide image.

  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 a map or the like based on 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 a memory such as a VRAM (Video RAM), and can display image information that can be displayed immediately. A buffer memory 42 that temporarily stores, a display control unit 43 that controls display of a display 44 such as a liquid crystal display or a CRT (Cathode Ray Tube) 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 touch panel, a voice input device, and the like for inputting various commands and data. In the case of a stationary navigation device, 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.

(3) 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 the present embodiment mainly includes a light source unit 4 and a concave mirror 8, and includes a front window 25, a ceiling portion 27, a bonnet 28, and a dashboard 29. It is attached to vehicle Ve provided with.

  The light source unit 4 is provided in the dashboard 29 and emits light constituting the display image (also simply referred to as “display light”) toward the concave mirror 8 provided in the dashboard 29. In this case, the display light reflected by the concave mirror 8 reaches the front window 25 through the opening 89 provided in the dashboard 29, and further reaches the position of the driver's eyes by being reflected by the front window 25. . In this way, the light source unit 4 causes the display light to reach the position of the driver's eyes and causes the driver to visually recognize the virtual image “Iv”.

  The concave mirror 8 reflects the display light emitted from the light source unit 4 toward the opening 89 provided in the dashboard 29 and reaches the front window 25. In this case, the concave mirror 8 magnifies and reflects the image indicated by the display light.

(4) Configuration of Light Source Unit FIG. 4 is a diagram schematically showing the configuration of the light source unit 4. As shown in FIG. 4, the light source unit 4 includes a light source 54, a control unit 55, and a communication unit 56.

  The light source 54 includes, for example, red, blue, and green laser light sources, and emits display light for displaying the guide image as a virtual image Iv based on the control of the control unit 55.

  The communication unit 56 receives various types of information used for navigation processing from the navigation device 1 based on the control of the control unit 55. For example, the communication unit 56 receives information necessary for generating a guidance image such as guidance route information and current position information from the navigation device 1.

  The control unit 55 includes a CPU, a ROM that stores a control program executed by the CPU, data, and the like, and a RAM that sequentially reads and writes various data as a work memory when the CPU operates. Control. For example, the control unit 65 causes the light source 54 to emit guide light display light based on the information received from the navigation device 1. Here, when displaying the feature distance image as the guide image, the control unit 65 displays the feature distance image through the front window 25 at a position corresponding to the position on the actual scenery of the feature to be displayed. .

[Feature distance image display processing]
Next, the display process of the feature distance image will be described. Schematically, when the system controller 20 approaches the next guidance point within a predetermined distance, the system controller 20 is located at the same distance as the next guidance point with respect to the vehicle Ve, or before and after the guidance point. A feature distance image is displayed on the head-up display 2 for existing features. Thereby, the system controller 20 makes a user grasp the feeling of distance with respect to a guidance point suitably.

(1) Process Flow FIG. 5 is a flowchart showing the procedure of the feature distance image display process according to this embodiment. The system controller 20 repeatedly executes the process shown in FIG. 5 during route guidance after setting the destination.

  First, during the route guidance, the system controller 20 displays the distance to the next guidance point and the traveling direction at the guidance point as a guidance image on the head-up display 2, or the information is voiced by the voice output unit 50. Output (step S100). In addition, the system controller 20 performs the display or audio | voice output by the head-up display 2 of step S100 continuously or intermittently until it passes the target guidance point.

  Next, the system controller 20 determines whether or not it is within a predetermined distance to the next guidance point (step S101). The “predetermined distance” is set in advance based on an experiment or the like, for example, at a distance that requires the user to recognize the next guide point. If the system controller 20 is within a predetermined distance to the next guide point (step S101; Yes), the system controller 20 advances the process to step S102. On the other hand, when it is further than the predetermined distance to the next guide point (step S101; No), step S101 is subsequently executed.

  Next, the system controller 20 determines whether or not a feature located at the same distance as the next guide point is registered in the map data (step S102). In this case, the system controller 20 determines whether or not a feature such as a sign or a traffic light is registered in the map data at the substantially same point as the next guide point based on the current position information obtained from the GPS receiver 18. . When the system controller 20 determines that a feature at the same distance as the next guide point is registered in the map data (step S102; Yes), a feature distance image indicating the distance to the corresponding feature is displayed. Then, it is displayed by the head-up display 2 at a position on the front window 25 associated with the feature on the landscape (step S103). For example, when the next guide point is 50 m ahead and a feature exists in the same 50 m ahead, the system controller 20 associates the feature distance image for the feature with the head-up display 2 in association with the feature. Display. As a result, the system controller 20 can suitably make the driver recognize the landmark feature, so that even when there are a plurality of intersections close to each other, the position of the intersection to be turned right or left next time Can be suitably grasped by the driver.

  On the other hand, when the feature at the same distance as the next guide point is not registered in the map data (step S102; No), the system controller 20 shows the distance to each feature before and after the next guide point. The distance image is displayed on the head-up display 2 in association with these features on the landscape (step S104). In this case, first, the system controller 20, along the traveling road, out of the features that are closest to the guide point among the features that are present behind the guide point and the features that are present in front of the guide point. The feature closest to the guide point is extracted from the map data. And the system controller 20 produces | generates the feature distance image which shows the distance with respect to the extracted each feature, and displays it on the head-up display 2. FIG. In this case, since the system controller 20 can cause the driver to appropriately grasp the distance to the feature before and after the next guidance point, the system controller 20 can suitably grasp the sense of distance to the guidance point on the actual landscape. it can.

  Preferably, in step S103 and step S104, the system controller 20 determines that if a feature in front of the next guide point is registered in the map data along the road being traveled, It is preferable to further display a feature distance image representing the distance on the head-up display 2. Thereby, the system controller 20 can make a driver | operator grasp the distance feeling with respect to the next guidance point more finely.

(2) Display Example FIG. 6 is a display example of the front window 25 based on the feature distance image display process of FIG. In the example of FIG. 6, the system controller 20 uses the feature distance images 71 to 73, the arrow image 74 indicating the distance to the next guide point and the traveling direction, and the route image 75 indicating the guide route as head images. The up-display 2 is displayed as a virtual image Iv superimposed on the front landscape.

  In the example of FIG. 6, the system controller 20 heads the arrow image 74 and the route image 75 indicating that the next guidance point is 50 m ahead and that it should turn right at the guidance point, based on step S <b> 100 of FIG. 5. It is displayed on the up display 2.

  Further, the system controller 20 determines that the distance to the intersection 60, which is the next guide point, is shorter than the predetermined distance in step S101, and determines that it is necessary to display the feature distance image. In this case, since there is no feature at the same distance as the intersection 60, the system controller 20 displays the feature distance images 71 to 72 for the buildings 61 and the traffic lights 62 existing before and after the intersection 60 based on step S104. doing.

  Here, the display processing of the feature distance images 71 to 72 will be specifically described. First, the system controller 20 sets the building 61 closest to the intersection 60 among the features in front of the intersection 60 and the intersection 60 among the features existing behind the intersection 60 along the traveling road. The nearest traffic light 62 is extracted from the map data. The system controller 20 displays the feature distance image 71 indicating the distance (40 m) from the current position of the building 61 on the head-up display 2 in association with the position of the building 61 on the landscape, and A feature distance image 72 indicating the distance (60 m) from the current position is displayed on the head-up display 2 in association with the position of the traffic light 62 on the landscape. As a result, the system controller 20 can cause the driver to appropriately grasp the distance between the features before and after the intersection 60, and thus can appropriately grasp the sense of distance to the intersection 60 on the actual landscape.

  In addition to the feature distance images 71 to 72, the system controller 20 causes the head-up display 2 to display a feature distance image 73 indicating the distance to the post 63 existing on the vehicle Ve side from the intersection 60. . Thereby, the system controller 20 can make a driver | operator grasp the feeling of distance with respect to the intersection 60 more finely.

  Further, the feature distance image is not limited to the one directly indicating the distance from the current position to the feature, and may be a figure or a symbol corresponding to the distance. For example, a symbol corresponding to a distance is set in advance, such as “◯” for a range of 10 m or more and less than 20 m, and “◎” for a range of 20 m or more and less than 30 m, and depending on the distance to the feature, A symbol may be displayed.

  As described above, the navigation device 1 according to the present embodiment causes the head-up display 2 to display the guide image so as to overlap the scenery around the vehicle Ve. The navigation device 1 recognizes the next guide point where the vehicle Ve is scheduled to pass, and extracts features existing around the guide point from the map data. Then, the navigation device 1 causes the head-up display 2 to display a feature distance image indicating the distance from the current position to the feature at a position corresponding to the feature included in the landscape. Thereby, the navigation apparatus 1 can make a driver | operator recognize suitably the distance of the feature in the scenery which exists around a guidance point. Therefore, the navigation apparatus 1 can make a driver | operator grasp | ascertain suitably which position on a landscape the guidance point is.

[Modification]
Hereinafter, modified examples suitable for the above-described embodiments will be described. The following modifications may be applied in any combination to the above-described embodiments.

(Modification 1)
The system controller 20 may detect a feature that is shielded by a driver due to being blocked by a building or other vehicle, and may exclude the feature from being displayed as a feature distance image.

  FIG. 7 shows a schematic configuration of a display system 100A according to this modification. The display system 100A includes a camera 3 that captures a landscape in front of the vehicle Ve. The navigation device 1 detects an object that obstructs the field of view, such as a building or another vehicle, based on the captured image “Im” generated by the camera 3. And the navigation apparatus 1 detects the feature obstruct | occluded by the detected target object based on the feature information contained in the picked-up image Im and map data. For example, when the camera 3 is a stereo camera, the navigation device 1 recognizes the three-dimensional position of the detected object and recognizes the three-dimensional space shielded by the object. And the navigation apparatus 1 detects the feature judged to belong to the shielded three-dimensional space more than the predetermined ratio based on the feature information included in the map data, and excludes it from the display target of the feature distance image.

  Thus, according to the present modification, the display system 100A can suitably suppress displaying the feature distance image for the feature that is actually shielded and cannot be seen.

(Modification 2)
In step S103 and step S104 of FIG. 5, the system controller 20 displays a feature distance image corresponding to either a feature at the same distance as the next guidance point or a feature before and after the next guidance point. Displayed on the head-up display 2. Instead, in step S103, the system controller 20 simultaneously displays the feature distance images corresponding to the respective features before and after the next guidance point in addition to the feature at the same distance as the next guidance point. You may display on the head-up display 2.

(Modification 3)
The system controller 20 may accept an input for designating the maximum number of feature distance images to be displayed at the same time and / or the type of feature to be displayed for the feature distance image, from the input device 60.

  For example, when there is an input for designating the maximum number of feature distance images to be displayed at the same time, the system controller 20 displays the feature distance images within a range not exceeding the maximum number of feature distance images designated by the user input. It is displayed on the head-up display 2. In this case, the system controller 20 preferentially displays the feature distance image as the feature closer to the guide point among the features that exist around the next guide point or in front of the guide point. Stipulated in

  In addition, when there is an input for designating the type or the like of the feature that is the display target of the feature distance image, the system controller 20 sets only the specified type of feature as the display target of the feature distance image. For example, when there is an input to determine the display target of the feature distance image in the facility, the system controller 20 selects the feature to be displayed as the feature distance image from the features registered in the map data as the facility. To do.

(Modification 4)
Even when the route guidance is not being executed, when the next right / left turn point is recognized, the system controller 20 displays the feature distance image for the feature in the vicinity of the right / left turn point or the like in the head-up display 2. May be displayed.

  FIG. 8 is a diagram illustrating an outline of processing in the present modification in the case where the passenger performs route guidance verbally to the driver. In the example of FIG. 8, the input device 60 includes a voice input device, and the system controller 20 recognizes the next right / left turn point by analyzing the voice data input from the input device 60, and recognizes the recognized right / left turn point. A feature distance image corresponding to the above is displayed on the head-up display 2.

  First, the system controller 20 extracts words related to the distance from the utterance content indicated by the voice data input from the input device 60. In the example of FIG. 8, the system controller 20 recognizes the word “50 m” based on a known voice recognition technique. In this case, the system controller 20 determines the feature on which the feature distance image is to be displayed in the same manner as in the embodiment, with a point 50 m ahead along the road on which the vehicle Ve is traveling. In the example of FIG. 8, the system controller 20 recognizes the buildings 61 and traffic lights 62 that exist before and after the intersection 60 that is 50 m ahead of the current position as display targets of the feature distance image, and associates them with the feature distances. An image 71 and a feature distance image 72 are displayed on the head-up display 2.

  As described above, according to this modification, the system controller 20 displays the feature distance image on the head-up display 2 when the next right / left turn point is recognized even when the route guidance is not being executed. Let As a result, the driver can properly grasp the sense of distance at the next right / left turn point. In this modification, the system controller 20 is an example of the “voice recognition unit” in the present invention.

(Modification 5)
In FIG. 3, the light source unit 4 displays the virtual image Iv by emitting light constituting the display image to the front window 25 and reflecting the light toward the driver. However, the configuration to which the present invention is applicable is not limited to this.

  FIG. 9 shows a schematic diagram of a head-up display 2A according to a modification. The head-up display 2A shown in FIG. 9 includes a combiner 9 for displaying a virtual image Iv. The combiner 9 shown in FIG. 9 is installed on the ceiling 27, and a display image emitted from the light source unit 4 installed on the ceiling 27 closer to the driver than the combiner 9 is projected, and the display image is displayed to the driver. The display image is displayed as a virtual image Iv by reflection to the eye position. Even with this configuration, the head-up display 2 </ b> A can allow the driver to visually recognize a guide image such as a feature distance image as the virtual image Iv.

(Modification 6)
Instead of displaying the guidance image on the head-up display 2, the navigation device 1 may display the guidance image on the display 44 so as to overlap the image captured by the camera that captures the front of the vehicle Ve. In this case, the display system 100 may not include the head-up display 2 but may include the navigation device 1 and the camera. In this case, the navigation device 1 may be a portable terminal including a display unit and a rear camera, for example.

(Modification 7)
The light source unit 4 may execute part of the processing executed by the system controller 20 described in the embodiment.

  For example, when the light source unit 4 executes the process of FIG. 5, the light source unit 4 recognizes the next guide point by receiving route information, current position information, and the like from the navigation device 1. And the light source unit 4 produces | generates the guidance image which shows the distance to the next guidance point, and the advancing direction in the said guidance point, and inject | emits the display light of the said guidance image. In addition, when the light source unit 4 approaches the next guide point within a predetermined distance, the light source unit 4 recognizes a feature existing around the guide point from the map data about the current position received from the navigation device 1. Then, the light source unit 4 generates a feature distance image for the feature and displays it on the front window 25.

  In another example, the light source unit 4 may have all the functions of the navigation device 1 such as a route guidance function. In this case, the light source unit 4 includes an input device, a self-supporting positioning device, a GPS receiver, and the like, determines a guide route to the destination input by the user, and performs route guidance, and the feature distance shown in FIG. Executes image display processing.

  In yet another example, when the light source unit 4 is connected to a server device (not shown) via a network, the light source unit 4 may appropriately receive route information, map data, and the like to be guided from the server device.

  Thus, in the present modification, the control unit 55 of the light source unit 4 executes the “spot acquisition unit”, “feature extraction unit”, “display control unit”, “sound output unit”, and program according to the present invention. The front window 25 functions as a “display unit” in the present invention.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2, 2A Head-up display 3 Camera 4 Light source unit 9 Combiner 25 Front window 28 Bonnet 29 Dashboard 100, 100A Display system

Claims (9)

An information display device for displaying an image on a display unit so as to be superimposed on a landscape image obtained by capturing a landscape around a moving body or to be superimposed on the landscape.
Point acquisition means for acquiring a designated point where the moving object is scheduled to pass;
A feature extracting means for extracting features existing around the designated point from the map database;
Display control means for causing the display means to display distance information from the current position of the mobile body to the feature at a position corresponding to the feature included in the landscape;
An information display device comprising: The point acquisition means acquires a guide point included in the route to the destination as the designated point,
The display control means displays distance information to the feature at a position corresponding to the feature included in the landscape, and also displays distance information from the current position of the moving body to the guidance point. The information display apparatus according to claim 1, wherein the information display apparatus displays the information on a means. Voice output means for outputting information for guiding the route to the destination by voice;
The point acquisition means acquires a guide point included in the route as a designated point,
The display control means displays distance information to the feature at a position corresponding to the feature included in the landscape, and displays the distance information from the current position of the moving body to the guide point as the voice. 2. The information display device according to claim 1, wherein the information is output from an output means. Voice recognition means for recognizing information related to the distance included in the voice uttered by the passenger of the mobile body;
The information display apparatus according to claim 1, wherein the point acquisition unit acquires the designated point based on information related to a distance included in the voice.   The feature extracting unit extracts one or more features whose distance from the current position of the moving object is closer than the designated point and one or more features farther than the designated point. The information display apparatus as described in any one of 1-4.   The feature extracting unit extracts features existing around the designated point while excluding features not included in a landscape image obtained by photographing a landscape around the moving body. Item 6. The information display device according to any one of Items 1 to 5. A control method executed by an information display apparatus that causes a display unit to display an image so as to overlap a landscape image obtained by capturing a landscape around a moving body or to overlap the landscape in appearance,
A point acquisition step in which the mobile object acquires a designated point scheduled to pass; and
A feature extraction step of extracting features existing around the designated point from the map database;
A display control step of displaying distance information from the current position of the moving body to the feature on the display unit at a position corresponding to the feature included in the landscape;
A control method characterized by comprising: A program executed by a computer that causes a display unit to display an image so as to be superimposed on a landscape image obtained by capturing a landscape around a moving object or to be superimposed on the landscape.
Point acquisition means for acquiring a designated point where the moving object is scheduled to pass;
A feature extracting means for extracting features existing around the designated point from the map database;
The computer is caused to function as display control means for causing the display means to display distance information from the current position of the moving body to the feature at a position corresponding to the feature included in the landscape. program.   A storage medium storing the program according to claim 8.