JP2015152467A - display control device, control method, program, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display control device that can suitably ensure visibility of a front landscape.SOLUTION: A navigation device 1 includes a system controller 20 that displays a guide image on a head-up display 2 to be apparently overlapped on the front landscape of a vehicle Ve. The system controller 20 calculates the position of a destination on a combiner 5, and when the calculated position of the destination overlaps on a display area of the guide image, hides the guide information.

Description

  The present invention relates to a technique for displaying an image of guidance information over a front landscape.

  Conventionally, in a head-up display, a technique for preventing the visibility of a front landscape from being impaired due to a complicated display of the guidance information when the guidance information is displayed so as to overlap the front landscape of the vehicle is known. Yes. For example, in Patent Document 1, when an alarm is displayed for a detected object, the display highlights each object when the number of objects is less than a predetermined number, and displays when the objects are larger than the predetermined number. It is described that one highlighting is performed on the entire image to be displayed.

International Publication WO2011 / 108198

  When the guidance information is displayed over the front scenery, there are cases where the driver needs to be particularly visually recognized by the driver. For example, when heading to a destination visited by a driver for the first time, it is necessary to particularly ensure the visibility of the destination in the vicinity of the destination. However, Patent Document 1 does not disclose any such problems and solution means.

  The present invention has been made to solve the above-described problems, and a main object of the present invention is to provide a display control device capable of suitably ensuring the visibility of a forward landscape.

  The invention according to the claim provides a display control unit that displays guidance information in a first area of a display unit so as to be superimposed on a landscape image obtained by capturing a landscape in front of a moving object or to overlap the landscape in appearance. And a calculation unit that calculates a position of a guide point that is a point for guiding the movement of the moving body on the display unit, and the display control unit is arranged on the display unit calculated by the calculation unit. When the position of the guide area overlaps with the first area, display of the guidance information in the first area is limited.

  The invention described in the claims is a control method executed by the display control device, wherein the guidance is provided so as to be superimposed on a landscape image obtained by capturing a landscape in front of a moving object or to be superposed on the landscape. A display control step for displaying information on the first area of the display unit, and a calculation step for calculating a position of a guide point that is a point for guidance regarding movement of the moving body on the display unit, The control step restricts the display of the guidance information in the first region when the position of the guidance location on the display unit calculated by the calculation step overlaps the first region. .

  The invention described in the claims is a program executed by a computer, and displays guidance information so as to be superimposed on a landscape image obtained by photographing a landscape in front of a moving object or to be superimposed on the landscape in appearance. The display control unit to be displayed in a first area of the unit, and the display control unit that causes the computer to function as a calculation unit that calculates a position of a guidance place that is a point to guide the movement of the moving body on the display unit. When the position of the guidance place on the display unit calculated by the calculation unit overlaps the first region, the unit restricts display of the guidance information on the first region.

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 schematic structure of a light source unit is shown. The flowchart which shows the display process of a guidance image is shown. It is an example of the front scenery visually recognized by the driver when the distance between the current position and the destination is more than a predetermined distance. A display example of the combiner around the destination is shown. The example of a combiner's display concerning a comparative example is shown. It is an example of the flowchart of an overlap determination process. The example which applied the overlap determination process shown in FIG. 9 in the example of FIG. 7 is shown. It is a figure which shows the outline | summary of the overlap determination process which concerns on a modification. The example of a display of the combiner near the destination concerning a modification is shown. The structural example of the display system which concerns on a modification is shown.

  In one preferred embodiment of the present invention, the display control device displays the guidance information on the display unit so as to be superimposed on a landscape image obtained by capturing a landscape in front of the moving body or to overlap the landscape in appearance. A display control unit to be displayed in one area; and a calculation unit that calculates a position of a guide point that is a point for guidance regarding movement of the mobile object on the display unit, and the display control unit includes the calculation When the position of the guidance location on the display unit calculated by the unit overlaps the first area, the display of the guidance information in the first area is restricted.

  The display control device includes a display control unit and a calculation unit. The display control unit causes the guide information to be displayed in the first area of the display unit so as to be superimposed on the landscape image obtained by capturing the landscape in front of the moving body or to overlap the landscape in appearance. Here, the “first area” is an area where guidance information is to be displayed, and is provided for each piece of guidance information when there are a plurality of pieces of guidance information to be displayed. The calculation unit calculates the position of the guidance site, which is a point for guidance regarding the movement of the moving object on the display unit. And a display control part restrict | limits the display to the 1st area | region of guidance information, when the guidance place on the display part which the calculation part calculated overlaps with a 1st area | region. According to this aspect, the display control device can restrict the display of the guidance information when the destination in the landscape overlaps the display of the guidance information, and can appropriately ensure the visibility of the destination.

  In one aspect of the display control device, the display control unit moves to a second area different from the first area when the guide area calculated by the calculation section overlaps the first area on the display section. indicate. By doing in this way, the visibility of a destination can be suitably ensured, continuing display of guidance information.

  In another aspect of the display control device, the display control unit displays a plurality of types of the guidance information, and the position of the guidance location on the display unit calculated by the calculation unit is the first region. In the case of overlapping, a predetermined type of guidance information among the guidance information is displayed in the second area. In this aspect, the display control apparatus moves only the predetermined type of guidance information from the first area to the second area when it overlaps the destination. Thereby, for example, the display control device can continue the display by moving only the guidance information that does not cause a problem even if the display position is moved.

  In another aspect of the display control device, the display control device includes a current position acquisition unit that acquires a current position of the moving body, a traveling direction acquisition unit that acquires information related to a traveling direction of the moving body, and the movement A guidance location information acquisition unit that acquires guidance location information related to the guidance location of the body, and the calculation unit is configured to provide the guidance on the display unit based on the current position, the traveling direction, and the guidance location information. Calculate the position of the ground. According to this aspect, the calculation unit can preferably calculate the position of the guide place on the display unit.

  In another aspect of the display control device, the display control unit is configured to display, on the display unit, the current position of the mobile object and the guidance place based on the current position, the traveling direction, and the guidance place information. A line segment passing through the first area is defined, and when the line segment overlaps the first area, the display of the guidance information in the first area is limited. According to this aspect, the display control apparatus can suitably specify the guidance information that overlaps the destination on the landscape.

  In another aspect of the display control device, the display control unit is presumed that the guide location is displayed on the display unit based on the current position, the traveling direction, and the guide location information. If the area overlaps with the first area, the display of the guidance information in the first area is restricted. Also according to this aspect, the display control device can suitably specify the guidance information that overlaps the destination on the landscape.

  In another aspect of the display control device, the calculation unit recognizes a display area of the destination from an image generated by an imaging unit that images the front of the moving body, and the display unit corresponding to the display area The upper area is calculated as the position of the guide area. Also according to this aspect, the calculation unit can preferably calculate the position of the guide place on the display unit.

  In another preferred embodiment of the present invention, there is provided a control method executed by the display control device, which is superimposed on a landscape image obtained by capturing a landscape in front of a moving object or is apparently superimposed on the landscape. A display control step of displaying guide information on the first area of the display unit, and a calculation step of calculating a position of a guide point that is a point for guiding the movement of the moving body on the display unit, The display control step restricts the display of the guidance information in the first region when the position of the guidance location on the display unit calculated by the calculation unit overlaps the first region. By executing this control method, the display control device can restrict the display of the guidance information when the destination in the landscape overlaps the display of the guidance information, and suitably ensure the visibility of the destination. it can.

  In still another embodiment of the present invention, a program executed by a computer displays guidance information so as to be superimposed on a landscape image obtained by capturing a landscape in front of a moving object or to overlap the landscape in appearance. The display control unit to be displayed in a first area of the unit, and the display control unit that causes the computer to function as a calculation unit that calculates a position of a guidance place that is a point to guide the movement of the moving body on the display unit. When the position of the guidance location on the display unit calculated by the calculation unit overlaps the first region, the unit restricts display of the guidance information on the first region. By installing and executing this program, the computer can restrict the display of the guidance information and suitably ensure the visibility of the destination when the guidance information display overlaps the destination in the landscape. it can. Preferably, the program is stored in a storage medium.

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

[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, a head-up display 2, and a camera 3. Instead of the configuration shown in FIG. 1, the head-up display 2 may incorporate a function corresponding to the navigation device 1.

  The navigation device 1 has a function of performing route guidance from a departure place to a destination. In this embodiment, the navigation device 1 controls the display of the head-up display 2. 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 is a route image showing a route planned to be traveled, an image that emphasizes an object in a forward scenery that requires attention, and an image that displays other information for assisting driving (collectively, these are “guide images”). The guidance image is visually recognized as a virtual image from the driver's eye position (eye point). Information on the guide image to be displayed is supplied from the navigation device 1 to the head-up display 2.

  The camera 3 is fixed toward the front of the vehicle Ve, and generates an image (also referred to as “front image Im”) obtained by capturing the front of the vehicle Ve at predetermined intervals. The camera 3 supplies the generated front image Im to the navigation device 1. As will be described later, the navigation device 1 detects an object (also referred to as “object Obj”) that should be noted by the driver included in the forward landscape, based on the front image Im. In the present embodiment, the navigation device 1 detects, as the object Obj, a pedestrian in front of the vehicle Ve and a signal lamp that has been switched from the unlit state to the lit state.

  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 (also referred to as “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, the system controller 20 generates a guide image for the head-up display 2 to display. In the present embodiment, the system controller 20 displays an arrow image indicating the traveling direction at the next right / left turn point of the vehicle Ve, and an emphasized image surrounding the object Obj recognized based on the forward image Im acquired from the camera 3. And generated as a guide image. Then, the system controller 20 displays the generated guidance image on the head-up display 2. The system controller 20 functions as a computer that executes the “display control unit”, “calculation unit”, “current position acquisition unit”, “traveling direction acquisition unit”, “guide area information acquisition unit”, and program according to 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 and stores various data used for navigation processing such as map data. The map data includes road data represented by links corresponding to roads and nodes corresponding to road connecting portions (intersections), facility information about facilities, and the like.

  The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and via a communication interface 37, traffic jams distributed from a VICS (registered trademark, Vehicle Information Communication System) center Road traffic information such as traffic information, information transmitted from the server device 200, and other information are received. Further, the communication device 38 transmits a control signal generated by the system controller 20, information on a guide image, and the like to the head-up display 2.

  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 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 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.

(3) Configuration of Head-Up Display FIG. 3 schematically shows a state in which the head-up display 2 according to this embodiment is installed in the vehicle interior. FIG. 3 is a view of the driver's seat of the vehicle Ve as viewed from the side, and the driver is sitting on a seat in the passenger compartment. Above the driver's head is a roof (sheet metal) 27 that forms the outer frame of the vehicle, and below that is a ceiling 28 that is the interior of the passenger compartment. In front of the driver, there is a windshield 25 and a sun visor 29 of the vehicle. In FIG. 1, the sun visor 29 is fixed in a state of facing the ceiling 28.

  The head-up display 2 is installed diagonally upward in front of the driver. The head-up display 2 mainly includes a main body portion 4 in which the light source unit 3 is accommodated, a combiner 5, a reflection portion 7, a support portion 8, and a clip portion 9.

  The light source unit 3 accommodated in the main body 4 emits light (also referred to as “display light”) constituting an intermediate image indicating information to be visually recognized by an observer toward the reflecting unit 7. A specific configuration of the light source unit 3 will be described later with reference to FIG.

  The combiner 5 is an optical member on which the display light generated by the reflecting unit 7 is projected and the observer visually recognizes the virtual image “Iv” by partially reflecting the display light to the driver's eye point “Pe”. It is. Note that the tip of the arrow in the virtual image Iv indicates the upward direction. The support 8 extends from the main body 4 toward the windshield 25 and supports the combiner 5. The support portion 8 is, for example, a pair of arms, one end is attached to each side surface of the main body portion 4, and the combiner 5 is sandwiched by the other end.

  The reflection unit 7 is a reflective optical member that generates an intermediate image, and functions as an exit pupil expander (EPE). For example, the reflection unit 7 is formed with a microlens array in which a plurality of microlenses are arranged on a surface on which light from the light source unit 3 is incident, and a reflection surface is formed on a surface opposite to the microlens array. Is done.

  The clip part 9 is attached to the upper surface of the main body part 4 facing the ceiling 28 and attaches the main body part 4 to the sun visor 29 with the sun visor 29 sandwiched therebetween. The clip portion 9 is a plate-like elastic body that is curved in a substantially J shape, and has an elastic force that biases the sun visor 29 in the direction of nipping.

(4) Configuration of Light Source Unit FIG. 4 is a diagram schematically showing the configuration of the light source unit 3. As illustrated in FIG. 4, the light source unit 3 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 to be irradiated to the combiner 5 based on the control of the control unit 55. The light source 54 and the combiner 5 function as a “display unit”. 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.

  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 transmitted from the navigation device 1.

[Display of facility image]
Next, a guide image display control process by the system controller 20 will be described. Schematically, when the vehicle Ve approaches the destination, the system controller 20 restricts the display of the guide image in which the display position overlaps with the destination in the forward scenery. Thereby, the system controller 20 suitably suppresses deterioration of the visibility of the destination in the forward landscape due to the guide image.

(1) Process Overview FIG. 5 is a flowchart showing a guide image display process executed by the system controller 20. The system controller 20 repeatedly executes the processing of the flowchart shown in FIG.

  First, the system controller 20 acquires the front image Im from the camera 3 (step S101). Then, the system controller 20 recognizes the object Obj based on the front image Im (step S102). For example, the system controller 20 recognizes the signal lamp that has been turned on as the object Obj when the display of the traffic light is switched based on the front image Im obtained in time series. Further, the system controller 20 extracts the display area of the pedestrian as the object Obj from the front image Im by a known image recognition technique.

  Next, the system controller 20 determines the guide image to be displayed and the display position of the guide image (step S103). In the present embodiment, the system controller 20 recognizes, as a guide image to be displayed, a highlight image that highlights the object Obj recognized in step S102 and an arrow image that indicates the direction of travel at the next right / left turn point. . Then, the system controller 20 determines the display position of the arrow image as a position corresponding to the next right / left turn point, and determines the display position of the emphasized image as a position surrounding the object Obj. In the case of an emphasized image, for example, the system controller 20 stores in advance information indicating a correspondence relationship between the position of the object Obj in the front image Im and the position of the object Obj visually recognized on the combiner 5. The display position of the emphasized image is determined with reference to the information.

  Next, the system controller 20 determines whether or not the distance between the current position and the destination is within a predetermined distance (step S104). The above-mentioned predetermined distance is a threshold for determining whether or not the destination can be visually recognized, and is set to 50 m, for example. When the distance between the current position and the destination is within a predetermined distance (step S104; Yes), the system controller 20 executes an overlap determination process described later, and determines that it overlaps with the destination in the forward landscape. Only the guide image excluding the image is displayed on the head-up display 2 (step S105). The overlap determination process will be described later with reference to FIGS.

  On the other hand, when the distance between the current position and the destination is greater than the predetermined distance (step S104; No), the system controller 20 determines that there is no risk of hindering the visibility of the destination by displaying the guidance image. All the guidance images determined in step S103 are displayed on the head-up display 2 (step S106).

(2) Display Example Next, display examples by the head-up display 2 shown in FIGS. 6 to 8 will be described with reference to the flowchart of FIG.

  FIG. 6 is an example of a front view visually recognized by the driver when the distance between the current position and the destination is greater than a predetermined distance. In the example of FIG. 6, the head-up display 2 displays an arrow image 80 indicating that the next intersection of the road 71 and the road 72 that is the next right / left turn point should be turned to the right, and the red of the traffic light 91 provided at the intersection. Emphasized images 81 and 82 surrounding the lighting portion and the pedestrian 92 moving along the road 71 are displayed on the combiner 5.

  In this case, first, the system controller 20 recognizes the red light portion of the traffic light 91 immediately after switching from the green signal to the red signal and the pedestrian 92 as the object Obj based on the front image Im supplied from the camera 3. (See steps S101 and S102 in FIG. 5). Then, the system controller 20 recognizes the emphasized images 81 and 82 surrounding these objects Obj and the arrow image 80 indicating the direction in which the vehicle Ve should travel next as a guide image to be displayed (see step S103). ). The system controller 20 displays all these guide images on the head-up display 2 because the distance between the current position and the destination is greater than the predetermined distance (see steps S104 and S106).

  FIG. 7 shows a display example of the combiner 5 around the destination. In FIG. 7, a building 93 indicates a destination building set by the user, and a road 74 indicates a road on a guide route adjacent to the building 93.

  In this case, first, similarly to the case of FIG. 6, the system controller 20, based on the front image Im supplied from the camera 3, and the red light portion of the traffic light 91 a immediately after switching from the green signal to the red signal, and the pedestrian 92 a Are recognized as the object Obj (see steps S101 and S102). Then, the system controller 20 recognizes the emphasized image surrounding these objects Obj and the arrow image indicating the direction in which the vehicle Ve should proceed next as the guide image to be displayed (see step S103).

  Here, since the destination exists within a predetermined distance from the current position, the system controller 20 determines whether the guidance image to be displayed overlaps with the building 93 that is the destination based on step S105 in FIG. (See step S104). Then, the system controller 20 determines that the emphasized image and the arrow image surrounding the red light portion of the signal 91a overlap with the destination building 93 (see step S105). Thereby, the system controller 20 can ensure suitably the visibility of the building 93 which is a destination. On the other hand, the system controller 20 determines that the emphasized image 82a surrounding the pedestrian 92a does not overlap with the destination building 93 and causes the head-up display 2 to display it.

  FIG. 8 shows a display example of the combiner 5 according to a comparative example different from the present embodiment. The comparative example shown in FIG. 8 shows an example in which all guide images are displayed regardless of whether the guide images overlap with the destination. In this case, the system controller 20 causes the head-up display 2 to display an enhanced image 81a surrounding the red light portion of the signal 91a and an arrow image 80a indicating the traveling direction in addition to the enhanced image 82a surrounding the pedestrian 92a. As a result, in the example of FIG. 8, the building 93 that is the destination, the arrow image 80 a and the emphasized image 81 a are visually recognized on the combiner 5, and the driver cannot easily see the building 93 that is the destination. It has become.

  In consideration of the above, in the display example shown in FIG. 7, the system controller 20 restricts the display of the guidance image in the vicinity of the destination so as not to disturb the visibility of the destination. Thereby, even if it is a place where a driver | operator visits for the first time, a driver | operator can be made to visually recognize a destination suitably.

(3) Overlap determination process FIG. 9 is an example of a flowchart of the overlap determination process executed in step S105 of FIG. Schematically, in FIG. 9, the system controller 20 determines that the guide image overlaps the destination when the line segment on the combiner 5 passing through the current position and the destination overlaps the display position of the guide image. .

  First, the system controller 20 determines the traveling direction and the purpose based on the current position and traveling direction of the vehicle Ve measured by the autonomous positioning device 10 and the GPS receiver 18 and the destination position information indicated by the facility information of the map data. An angle “θ” formed by the direction of the ground is calculated (step S201). Next, the system controller 20 calculates a line segment “L” on the combiner 5 that passes through the current position and the destination based on the angle θ (step S202). Then, the system controller 20 recognizes the position (area) on the combiner 5 that displays each guide image (step S203), and determines whether the display position of each guide image overlaps the line segment L. Then, the system controller 20 determines that the guide image that overlaps the line segment L is a guide image that overlaps the destination in the forward scenery (step S204). Then, the system controller 20 excludes the guide image that overlaps the destination in the forward scenery from the display target (step S205).

  FIG. 10 shows an example in which the overlap determination process shown in FIG. 9 is applied to the example of FIG. Hereinafter, FIG. 10 will be described with reference to the flowchart of FIG. 9 as appropriate.

  First, the system controller 20 calculates an angle θ formed by the traveling direction and the direction of the destination based on the current position and traveling direction of the vehicle Ve and the position information of the destination (see step S201). Is recognized (see step S202). In the example of FIG. 10, the system controller 20 sets a line segment that connects the position on the lower end of the combiner 5 corresponding to the current position to the upper end of the combiner 5 through the destination building 93 as a line segment L. It has recognized. Then, the system controller 20 recognizes the display areas of the arrow image 80a and the emphasized images 81a and 82a, which are guide images to be displayed, as shown in FIG. 10 (see step S203). Then, the system controller 20 determines an overlap between the display area of the arrow image 80a and the emphasized images 81a and 82a that are the guide images and the line segment L. As a result, the system controller 20 determines that the display area of the arrow image 80a and the emphasized image 81a overlaps the line segment L (see step S204), and excludes the arrow image 80a and the emphasized image 81a from the display target (see step S205). ).

  As described above, the system controller 20 recognizes the line segment L extending from the current position to the destination, and performs an overlap determination between the line segment L and each guide image. Thereby, the guidance image which impairs the visibility of the destination can be suitably excluded from the display target.

  As described above, the system controller 20 of the navigation device 1 according to the present embodiment displays the guidance image on the head-up display 2 so as to overlap the scenery in front of the vehicle Ve. Then, the system controller 20 calculates the position of the destination on the combiner 5, and when the calculated position of the destination overlaps the display area of the guide image, the system controller 20 hides the guide information. Thereby, the system controller 20 can ensure the visibility of the destination suitably.

[Modification]
Next, a modified example suitable for the above embodiment will be described. The following modifications may be applied to these embodiments in any combination.

(Modification 1)
In the overlap determination process, the system controller 20 determines the overlap between the estimated area of the destination on the combiner 5 and the display area of each guide image instead of determining the overlap between the line segment L and the display area of each guide image. You may judge.

  FIG. 11 is a diagram showing an outline of the overlap determination process according to the modification. In the example of FIG. 11, after recognizing the line segment L as in the embodiment, the system controller 20 recognizes the sector area AL having a predetermined angle “θL” with the line segment L as the radius. The sector area AL includes the line segment L and is set to include the direction of the destination. Then, the system controller 20 determines the overlap between the sector area AL and each guide image. As a result, the system controller 20 determines that the display area of the arrow image 80a and the emphasized image 81a overlaps the sector area AL, and excludes the arrow image 80a and the emphasized image 81a from the display target.

  Instead of the example of FIG. 11, the system controller 20 may set a rectangular area determined by setting the line segment L to a predetermined thickness as the above-described estimation area. In yet another example, the system controller 20 estimates the center position of the destination on the combiner 5 based on the current position and traveling direction of the vehicle Ve and the position information of the destination, and the estimated center position of the destination A region such as a predetermined rectangular region or a circular region centered on may be set as the above-described estimation region. Even in these cases, the system controller 20 excludes the guide image overlapping the set estimation area from the display target.

(Modification 2)
The system controller 20 may move the display position of the guide image determined to overlap with the destination to a position that does not overlap with the destination, instead of deleting the display of the guide image determined to overlap with the destination. .

  FIG. 12 shows a display example of the combiner 5 near the destination according to the modification. In the example of FIG. 12, the system controller 20 recognizes the arrow image 80a and the emphasized images 81a and 82a shown in the comparative example of FIG. 8 as the guide images to be displayed, and among these guide images, the arrow image 80a It is assumed that the emphasized image 81a is overlapped with the destination.

  In this case, the system controller 20 determines, for each type of guide image, whether to delete the guide image overlapping the destination or move the display position. Specifically, the system controller 20 determines that the arrow image 80a among the guidance images determined to overlap with the destination can be displayed with the display position shifted, and is more than the normal display position. The arrow image 80a is displayed by shifting to the right side. In this case, preferably, the system controller 20 recognizes the estimated area of the destination building 93 such as the sector area AL based on the first modification, and shifts the position of the arrow image 80a to a position that does not overlap the estimated area. Good.

  On the other hand, the system controller 20 determines that the highlighted image 81a among the guide images determined to overlap with the destination cannot be displayed with the display position shifted, and is excluded from the display target. Thus, the system controller 20 excludes the emphasized image surrounding the object Obj from the display target without shifting the display.

  In this way, the system controller 20 stores, for example, a map indicating whether or not the display position can be moved for each type of guide image in advance, so that the guide image for each type of guide image that overlaps the destination is stored. Is to be erased or the display position is moved. Also by this, the system controller 20 can restrict | limit the display of the guidance image which overlaps with the destination suitably, and can ensure the visibility of the destination.

  Further, instead of deleting the display of the guide image determined to overlap the destination, the system controller 20 displays the guide image by reducing the brightness of the guide image or increasing the transparency. You may restrict. Also by this, the visibility of the destination which overlaps with a guidance image can be suitably ensured.

(Modification 3)
The system controller 20 extracts the display area of the facility (building) at the destination from the forward image Im acquired from the camera 3, thereby recognizing the display area on the combiner 5 of the facility at the destination. You may restrict | limit the display of the guidance image which overlaps with a display area.

  For example, the system controller 20 approaches the destination when the facility information of the facility set as the destination includes information representing the apparent characteristics of the facility such as shape, color, and height. In such a case, a process of detecting a destination facility from the forward image Im is performed by referring to the information. When the system controller 20 detects the facility that is the destination from the front image Im, the system controller 20 estimates that the area on the combiner 5 corresponding to the detected area is the display area of the facility at the destination. Then, the system controller 20 restricts the display of the guidance image that overlaps the estimated display area of the facility at the destination.

(Modification 4)
Instead of or in addition to setting a target for ensuring visibility as a destination, the system controller 20 can select any facility or point (such as a transit point or a specific landmark (landmark)) as a guidance target. May be regarded as a target for suppressing overlap with the guide image, similarly to the destination of the embodiment. In this case, the guidance location may be a facility arbitrarily set by the user, or may be a facility that serves as a mark at a right or left turn point on the guidance route. Even in this case, when the distance between the set guidance location and the current position is within a predetermined distance, the system controller 20 performs an overlap determination process and displays a guidance image overlapping the guidance location. Restrict.

(Modification 5)
The system controller 20 may determine the type of guide image that does not restrict the display even when the system controller 20 overlaps the destination. For example, the system controller 20 determines that there is a high necessity for alerting a specific type of object Obj such as a pedestrian on a road by displaying an emphasized image surrounding the object Obj. Even if they overlap, the display is not limited. Thereby, driving safety can be suitably ensured.

(Modification 6)
Instead of the system controller 20 of the navigation device 1 executing the process of the flowchart shown in FIG. 5, the control unit 55 of the head-up display 2 may execute the process of the flowchart shown in FIG.

  In this case, the navigation device 1 transmits to the head-up display 2 the forward image Im, information on the current position of the vehicle Ve, information on the traveling direction, facility information, and the like, which are information necessary for executing Steps S101 to S106. . And the control part 55 performs display control of a guidance image by performing step S101 thru | or S106 based on the information transmitted from the navigation apparatus 1. FIG.

  In this modification, the control unit 55 executes the “display control unit”, “calculation unit”, “current position acquisition unit”, “traveling direction acquisition unit”, “guide location information acquisition unit”, and program according to the present invention. Functions as a computer.

(Modification 7)
In FIG. 3, the head-up display 2 has a combiner 5 and makes the driver visually recognize the virtual image Iv based on the emitted light of the light source unit 3 reflected by the combiner 5. However, the configuration to which the present invention is applicable is not limited to this. Instead of this, the head-up display 2 may not have the combiner 5 and may allow the driver to visually recognize the virtual image Iv based on the emitted light of the light source unit 3 reflected by the windshield 25. In this case, the windshield 25 is an example of the “display unit” in the present invention.

  Further, the position of the light source unit 3 is not limited to the case where it is installed on the ceiling portion 27. Instead of this, the light source unit 3 may be installed on the dashboard or installed inside the dashboard. When installed on the dashboard, the dashboard is provided with a combiner 5 or the windshield 25 reflects light directly from the light source unit 3 to make the driver recognize the virtual image Iv. When installed in the dashboard, the dashboard is provided with an opening for allowing light to pass through the combiner 5 or the windshield 25.

(Modification 8)
The display system 100 may display the guidance image superimposed on the front image Im photographed by the camera 3 and displayed by the navigation device 1 instead of displaying the guidance image superimposed on the front landscape by the head-up display 2. .

  FIG. 13 shows a configuration example of a display system 100A according to a modification. In the example of FIG. 13, the system controller 20 of the navigation device 1 causes the display 44 to display a guide image superimposed on the front image Im acquired from the camera 3. As described above, even when the guidance image is displayed while being superimposed on the front image Im taken by the camera 3, the system controller 20 restricts the display of the guidance image that overlaps the display area of the destination in the front image Im. To do. Thereby, the system controller 20 can suitably ensure the visibility of the destination in the front image Im displayed on the display 44.

  Moreover, when the navigation apparatus 1 is a portable terminal, the navigation apparatus 1 may guide a pedestrian. In this case, the navigation apparatus 1 has a built-in camera 3 and displays a guidance image by superimposing it on a front image taken by the camera 3.

  In this modification, the display 44 functions as a “display unit” in the present invention.

(Modification 9)
The guide image subject to display restriction is not limited to the arrow image indicating the traveling direction at the next right / left turn point of the vehicle Ve and the emphasized image surrounding the object Obj, but the image indicating the speed of the vehicle Ve, the next right / left turn Various images such as an image showing the distance to the point may be used.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Head-up display 3 Light source unit 4 Main body part 5 Combiner 25 Windshield

Claims (10)

A display control unit that displays guidance information in a first area of the display unit so as to be superimposed on a landscape image obtained by capturing a landscape in front of a moving object or to overlap the landscape in appearance.
A calculation unit that calculates a position of a guidance place that is a point for guidance on movement of the moving object on the display unit;
With
The display control unit restricts display of the guidance information in the first region when the position of the guidance location on the display unit calculated by the calculation unit overlaps the first region. A display control device.   The display control unit displays a second area different from the first area when the position of the guide place calculated by the calculation section overlaps the first area on the display section. The display control apparatus according to claim 1. The display control unit displays a plurality of types of the guidance information, and
When the position of the guide location on the display unit calculated by the calculation unit overlaps the first region, a predetermined type of guide information is displayed in the second region among the guide information. The display control device according to claim 2. A current position acquisition unit for acquiring a current position of the moving body;
A traveling direction acquisition unit that acquires information on the traveling direction of the moving body;
A guide location information acquisition unit that acquires guide location information related to the guide location of the mobile body,
The said calculation part calculates the position of the said guidance place on the said display part based on the said present position, the said advancing direction, and the said guidance place information, The Claim 1 thru | or 3 characterized by the above-mentioned. The display control apparatus described.   The display control unit determines a line segment that passes through the current position of the mobile body and the guidance location on the display unit based on the current position, the traveling direction, and the guidance location information, The display control apparatus according to claim 4, wherein when the first area overlaps, the display of the guidance information on the first area is limited.   The display control unit determines an area on which the guidance location is estimated to be displayed on the display unit based on the current position, the traveling direction, and the guidance location information. The display control apparatus according to claim 4, wherein display of the guidance information on the first area is limited when the area overlaps with the area.   The calculation unit recognizes a display area of the destination from an image generated by an imaging unit that captures the front of the moving body, and sets an area on the display unit corresponding to the display area as the position of the guide area. The display control apparatus according to claim 1, wherein the display control apparatus calculates the display control apparatus. A control method executed by a display control device,
A display control step of displaying guidance information on the first area of the display unit so as to be superimposed on a landscape image obtained by capturing a landscape in front of a moving object or to be superimposed on the landscape in appearance.
A calculation step of calculating a position of a guide point that is a point for guiding the movement of the moving body on the display unit;
With
The display control step restricts the display of the guidance information in the first region when the position of the guidance location on the display unit calculated by the calculation step overlaps the first region. Control method. A program executed by a computer,
A display control unit that displays guidance information in a first area of the display unit so as to be superimposed on a landscape image obtained by capturing a landscape in front of a moving object or to overlap the landscape in appearance.
Causing the computer to function as a calculation unit that calculates a position of a guide point that is a point to guide the movement of the mobile object on the display unit;
The display control unit restricts display of the guidance information in the first region when the position of the guidance location on the display unit calculated by the calculation unit overlaps the first region. Program.   A storage medium storing the program according to claim 9.

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