JP5082982B2 - Car navigation system - Google Patents

Description

  The present invention relates to a car navigation device that is attached to a vehicle and performs route guidance of the vehicle.

In recent years, car navigation devices have become widespread.
With this widespread use, various functions have been added to car navigation devices, such as a function that conveys route guidance to the driver more easily.

As one of these various functions, there is a function of performing route guidance by displaying a 3D image imitating an image viewed from the current position through the windshield (Non-patent Document 1).
By using this function, the driver can receive route guidance with an image that is similar to the scenery that the driver is actually looking at, so compared to when receiving route guidance with a flat image such as a map. You can receive route guidance according to the actual situation.

In addition, some functions for displaying a 3D image and performing route guidance further include a function for highlighting a building as a destination when the destination is approached.
Using this feature to highlight the destination, you can show where the driver is actually in the landscape you ’re looking at, rather than showing the destination to the driver on the map. The driver was able to accurately indicate the location of the destination.
Aida Kaoru, car navigation labo, car navigation mastering skills to become a car navigation expert Q5 left figure, [online], Motor Magazine, Inc., [March 19, 2008 search], Internet <URL: http: // www. carnavi-labo.net/reading/mejin/index.html〉

However, in the 3D image described above and the actual landscape, there are unmatched building colors, unmatched shapes due to building replacement, and the like.
Therefore, when the driver is not familiar with this unmatch, the destination cannot be grasped unless the 3D image and the actual landscape are carefully compared to determine where the destination highlighted in the 3D image is in the actual landscape. There was also.

  Therefore, an object of the present invention is to provide a car navigation device that allows a driver to intuitively grasp the position of a landmark such as a destination in an actual landscape.

The car navigation device according to claim 1, which is an invention made to achieve the above object, specifies a camera for photographing a landscape around the vehicle, a monitor, and landmarks for route guidance as driving marks. Wireless communication means that wirelessly communicates with a communication device capable of performing an operation, and a mark object setting that wirelessly transmits to the communication apparatus using the wireless communication means and sets a mark designated by an operation performed on the communication apparatus as a mark object Means .
Further, the car navigation device includes a position range specifying unit that specifies a display position and a display range in which the mark set by the mark set setting unit is displayed in an image photographed by a camera and displayed on a monitor. And a processing display control means for processing an image captured by the camera into a highlighted image in which the display range is highlighted at the display position and displaying the image on a monitor.
The car navigation device further includes an approach determination unit that determines whether the vehicle has approached the mark within a predetermined distance, a position change operation unit that receives an operation of moving the display position on the highlighted image, and the position After the change operation means accepts an operation to move the display position, the first operation means includes a first calibration means for performing correction for moving the display position specified by the position range specifying means by the moved difference.

In this car navigation apparatus, when the processing display control means determines that the vehicle has approached a predetermined distance to the landmark by the approach determination means, the display position is corrected by the first calibration means. The display image is displayed on the monitor.

In the car navigation device of the present invention, when a mark is present in an image obtained by photographing a landscape around the vehicle with a camera, an image in which the display position and the display range where the mark is displayed is highlighted on the monitor. Is displayed. That is, the image marker member destination or the like, in the same image as the scene the driver is actually seen is highlighted that is displayed on the monitor.

  Therefore, when the car navigation device of the present invention is used, a highlighted image in which a landmark is highlighted in an image that does not match the actual landscape is displayed. The driver can intuitively grasp the position of the landmark.

  Further, in the car navigation device of the present invention, the display range in which the mark body is displayed on the monitor is specified from the distance between the mark body and the vehicle. It gets bigger if it is nearby.

Therefore, when the car navigation device of the present invention is used, the driver can intuitively grasp the distance from the current position to the landmark such as the destination.
The landmark may be a tower such as a TV tower, a building, a building such as a condominium, a detached house, a gas station, a person, or a store in a building. .

  In addition, in the case of a building, in the city, since only the part facing the road can be seen from the road, the display range in which the landmark is highlighted may be the surface facing the road of the building. .

Next, in the present invention, highlighting is not performed unless the vehicle approaches the mark within a predetermined distance .

Therefore, it is possible to prevent useless display that is performed when the mark is in a position that cannot be seen by the driver.
In this way, the highlight image is displayed for the first time when the mark object approaches, so that the driver is warned that the mark object is approaching, so that the driver does not miss the mark object. , You can be sure to recognize.

Next, in the present invention, wireless communication is performed with a communication device capable of designating a landmark for landmark guidance as a driving mark, and the mark designated by the operation performed by the communication device is set as a mark object. . The communication device is specifically a mobile phone or the like.

For this reason, for example, when you get to pick up a building that is a car, you can use a communication device such as a mobile phone to specify the building you want to pick up as a landmark. On the monitor of the car navigation device provided in the person's car, a highlighted image in which the building is highlighted as a landmark is displayed.

  Therefore, when this car navigation device is used, the driver can intuitively grasp the mark object arbitrarily designated from the outside by remote control. In the case of the above example, the driver can select the building to be picked up. It can be accurately grasped.

If it is desired to highlight the person who is waiting as a mark, the display range to be highlighted may be a range based on the average physique of the person.
Next, when highlighting a mark on an image taken with a camera, the mark is highlighted or displayed in a position that is different from the position where the mark is displayed due to a camera installation error or the like. It is conceivable that the size is different between the highlighted range and the highlighted range.

Next, in the present invention, when receiving an operation for moving the display position on the highlighted image, thereafter, only the movement difference that the movement of this, by performing the correction of moving the display position specified by the position range specifying means Yes.

Then, the processing display control means displays on the monitor the highlighted display image whose display position is corrected by the first calibration means .
In this way, if the displacement between the display position of the highlight display and the display position of the mark object is cured by operating the moving operation means, the highlight object is displayed in the highlight display even if there is a similar shift thereafter. It will be done at the position where it is done.

Therefore, if this car navigation device is used, even if there is a camera attachment error or the like, the mark body is displayed at the position where it is originally highlighted.
Further, as described in claim 2 , after the range changing operation means for accepting an operation for changing the display range on the highlighted image, and after the range changing operation means accepts the operation for changing the display range, the change is performed. You may make it provide the 2nd calibration means which performs correction | amendment which changes the display range specified by the position range specific means only by the ratio.

Then, the processed display control means may display the highlighted image whose display range is corrected by the second calibration means on the monitor.
In this case, if the display range of the highlight display and the display range where the mark object is displayed are corrected by operating the moving operation means, the highlight display is not performed even if there is a shift thereafter. This is done in the same range as the displayed range.

For this reason, when this car navigation device is used, even if there is a camera attachment error or the like, the mark object is displayed in the originally highlighted range.
In addition, as described in claim 3, even if the invention described in claim 1 does not include the position change operation means and the first calibration means, the range change operation means and the second calibration are provided. Means may be provided.

[First embodiment]
Hereinafter, a first embodiment to which the present invention is applied will be described with reference to the drawings.
Here, FIG. 1A is a block diagram showing an internal configuration of the car navigation device 1 of the present embodiment, and FIG. 1B is a list showing specific examples of information stored in the HDD 13.
1. Overall Configuration As shown in FIG. 1, the car navigation device 1 of the present embodiment includes a main body 10, a GPS receiver 20 that is communicably connected to the main body 10, and a camera 21.

The main body 10 includes a central control device 11, a monitor device 12, a hard disk drive (hereinafter referred to as “HDD”) 13, and a gyro sensor 14.
The central control device 11 is composed of a CPU, a ROM, a RAM, and other computer devices, and is a device that executes various processes described later.

  The monitor device 12 (hereinafter referred to as “monitor 12”) includes an image display unit 121 that displays various images, and a transparent touch panel 122 installed on the screen of the image display unit 121.

The monitor device 12 can display an image captured by the camera 21 and an image associated with various processes executed by the central control device 11 on the image display unit 121.
In addition, the monitor device 12 displays an image of the switch on the image display unit 12, and when the touch panel 122 of the portion where the image is displayed is operated, the operation corresponding to the image of the switch is performed on the car navigation device 1. It is also configured to be able to instruct.

The HDD 13 is a device that stores various types of information to be described later.
The gyro sensor 14 detects the traveling direction (three-dimensional) of the vehicle on which the car navigation device 1 is mounted, and the angular velocity (angular velocity rotating around the x-axis, y-axis, and z-axis) when the vehicle tilts in each direction. It is a sensor for monitoring by this.

  The GPS receiver 20 receives a position measurement signal from a GPS satellite, calculates a current position where the position estimation signal is received from the position measurement information included in the signal, and obtains information on the current position. It is a device that outputs to the main body 10 side. In the present embodiment, information calculated by the GPS receiver 20 is used as information indicating the current position of the vehicle including the car navigation device 1.

The camera 21 is attached to an upper part of a license plate on the front side of the vehicle to which the car navigation device 1 is attached, and is installed so as to photograph the front in the traveling direction of the vehicle.
2. Information Stored in HDD 13 A plurality of pieces of information are stored in the HDD 13 of the car navigation device 1 of the present embodiment, as shown in FIG.

  As specific examples, map information, landmark information, highlight display frame information, destination information, guidance route information, correction value information, camera field of view information, virtual distance information, scale factor information, and the like are stored.

The map information is information including image information of a map for route guidance and is stored in the HDD 13 in advance.
The landmark candidate information stores position information of buildings that are landmarks of each route that constitutes the guide route, and dimension information about the size.

  Specifically, when the guide route is composed of two routes, national highway 1 and national highway 2, it stands at the junction of national highway 1 and national highway 2, and at the junction or intersection of these national highway and other roads A building or the like is set as a landmark for each route, and the position information of the building and the size information regarding the size are stored for each route.

  In the present embodiment, information on the intermediate position in the width direction where the building faces the road is stored as position information, and information on the width and height where the building faces the road is stored as dimension information.

  The highlight display frame information is information related to the color of the highlight display frame and the thickness of the frame used to highlight the building surrounding the landmark or the like, and is stored in the HDD 13 in advance.

  The destination information is information indicating the destination of the route guidance that is input by operating the touch panel 122 when obtaining the guidance route, and is stored in the HDD 13 after being used for obtaining the guidance route. .

The guide route information is information related to the guide route for route guidance, and is stored in the HDD 13 after the guide route is obtained.
The correction value information is information for correcting the display position and display range where the highlight display frame is displayed. It is input by operating the touch panel 122 and stored in the HDD 13.

The camera visual field information is information relating to the visual field of the camera 21 and is stored in advance in the HDD 13.
The virtual distance information is information relating to the virtual distance k1 of the monitor 12 viewed from the viewpoint of the camera 21 and will be described in detail later, and is stored in the HDD 13 in advance.

The scale information is information regarding the scale k2 of the camera 21.
3. Next, the display position and display range in which the landmark is displayed on the monitor 12 in the central control device 11 of the car navigation device 1 of the present embodiment. Describe how to find

Here, FIG. 2 is an explanatory diagram for explaining how to obtain the display position and display range where the landmark is displayed on the monitor 12, (a) is the display position of the landmark, and (b) is the landmark. It is explanatory drawing for demonstrating how to obtain | require the display range.
3.1. Landmark Display Position In the following, the way of viewing FIG. 2 (a) will be described first, and then the method for obtaining the landmark display position will be described in detail.
3.1.1. FIG. 2 (a)
In FIG. 2A, “O” indicates the viewpoint of the camera 21, and x, y, and z are a horizontal axis passing through this viewpoint, a vertical axis along the direction of gravity, and xy, respectively. This is an axis indicating the center of the field of view of the camera 21 perpendicular to the plane, and is an axis that faces the shooting direction of the camera 21. In the present embodiment, the camera 21 is attached so that the shooting direction and the traveling direction of the vehicle coincide.

The plane indicated by the symbol A is the ground surface shown in a plane for ease of explanation, and Pa shown on the ground surface A is the position of the landmark.
A plane indicated by a symbol B is a display surface of the monitor 12 and is a plane perpendicular to the horizontal plane and perpendicular to the z axis. The display surface B is set so that the z-axis passes through the center of the display surface B (a portion where two diagonal lines of the display surface B intersect).

  Reference sign k1 indicates a virtual distance from the viewpoint to the display surface B of the monitor 12. This virtual distance k1 is determined by the combination of the camera 21 and the monitor 12. As described above, in the present embodiment, information related to the virtual distance k1 is stored in the HDD 13.

Symbol a is a distance component in the z-axis direction from the viewpoint, that is, the current position to the landmark.
The symbol b is a distance component in the y-axis direction from the current position to the landmark.

Symbol c is a distance component in the x-axis direction from the current position to the landmark.
The distances corresponding to these symbols a, b, and c can be calculated from the current position information of the vehicle, the position information of the landmark, and the shooting direction of the camera.
3.1.2. Specific Explanation of How to Obtain Landmark Display Position As shown in FIG. 2 (a), the landmark display position is obtained by drawing a line segment from the visual field origin to the landmark position Pa, and the line segment and the monitor. This is the point Pa ′ where the 12 display surfaces B intersect.

From FIG. 2A, the distance ratio Q from the viewpoint O to the landmark display position Pa ′ to the distance from the viewpoint O to the landmark position Pa is Q = (k1 / a).
Since this ratio Q is the same as the ratio Q of the landmark display position Pa ′ to the landmark position Pa in the x-axis direction and the y-axis direction, the position of the landmark displayed on the display surface B of the monitor 12 from the viewpoint O The distances along the x-axis direction and the y-axis direction to Pa ′ are obtained as Qc and Qb, respectively, using this ratio Q.
3.2. Landmark Display Range Next, how to obtain the landmark display range will be described.

Hereinafter, the way of viewing FIG. 2B will be described first, and then how to obtain the display range of the landmark will be specifically described.
In the present embodiment, since the part where the building faces the road is highlighted, FIG. 2B illustrates the part where the building faces the road.

Also, for ease of explanation here, as a building set as a landmark, a building standing near the intersection of the intersecting roads among the buildings standing near the intersection of the road where the vehicle is currently traveling and the intersecting road is selected. It is assumed and explained.
3.2.1. FIG. 2 (b)
In FIG. 2B, “O” indicates the viewpoint of the camera 21, and Pa is the landmark position.

The symbol L indicates the distance from the viewpoint O to the landmark position Pa.
Symbols W and H indicate a width (W) and a height (H), which are dimensions of a building that is a landmark.

In this embodiment, the position Pa of the building serving as the landmark is represented by the coordinates of the intermediate point of the width W at which the building faces the road at the height 0 of the building serving as the landmark.
3.2.2. Specific Explanation on How to Obtain Landmark Display Range As shown in FIG. 2B, the landmark display range relates to viewpoint O, that is, information related to the current position of the vehicle, and landmark position Pa. The distance L is obtained from the information.

  When an image photographed by the camera 21 is displayed on the monitor 12, a landmark height h at a distance L is displayed on the display screen of the monitor 12. It depends on the combination.

Further, the height h of the landmark displayed on the display screen of the monitor 12 is inversely proportional to the distance L.
Therefore, the height h of the landmark displayed on the display screen of the monitor 12 is obtained by h = k2H / L, where k2 is a scale ratio determined by the combination of the camera 21 and the monitor 12.

  On the other hand, the landmark width W displayed on the display screen of the monitor 12 by the same method is obtained by d = k2 W / L, where k2 is a scale ratio determined by the combination of the camera 21 and the monitor 12.

Therefore, the display range of the landmark displayed on the display surface B of the monitor 12 is calculated as a height k2H / L with Pa as the lowest point and a width k2W / L with Pa as the middle point.
The scale factor k2 is stored in the HDD 13 as described above.
4). Calibration Process Next, the calibration process executed by the central controller 11 will be described.

  FIG. 3A is an explanatory diagram for explaining the deviation between the position and range where the highlighting is performed and the position and range where the landmark is displayed. FIG. 3B is a diagram for selecting the landmark used for the calibration process. FIG. 4 is an explanatory diagram of a selection screen displayed on the monitor 12 when the operation to perform is performed. FIG. 4 is a flowchart of the calibration process.

  As described with reference to FIG. 2, in the present embodiment, the display position and display range of the landmark are set as current position information, landmark position information, camera shooting direction information, and between the landmark and the current position. It is obtained from distance information and landmark dimension information.

  However, the current position information and the shooting direction information of the camera 21 out of the above information are actually calculated from the difference between the mounting error of the camera 21 and the current position measured using the GPS receiver 20 and the viewpoint of the camera 21. The current position of the camera and the shooting direction of the camera may be different. The same applies to the distance information.

  As a result, as shown in FIG. 3A, the position where the landmark LM is displayed and the position where the highlight display frame LMW of the landmark is displayed are misaligned, or the highlight display frame LMW is displayed. The size of the displayed range may differ from the size of the range where the landmark LM is displayed.

  This calibration process is a process for causing the car navigation apparatus 1 to have correction information necessary for correcting the positional deviation and the difference in the size of the range as described above.

As shown in FIG. 4, the calibration process is a process having steps (hereinafter referred to as “S”) 10 to S22.
This calibration process is started when the central controller 11 receives an operation to operate the touch panel 122 of the monitor 12 and to instruct execution of the calibration process.

  In S10, based on the current position information input from the GPS receiver 20 and the map information stored in the HDD 13, a selection image that is an image of a map including the current position is displayed as shown in FIG. Processing to be displayed on the monitor 12 is executed.

  Further, on this selected image, a landmark icon α included in the map displayed as the selected image is displayed based on the landmark information (information on the position) stored in the HDD 13.

  Further, the selected image is a map displayed as a selected image based on the vehicle traveling direction information indicating the shooting direction z of the camera 21 and information on the viewing angle θ of the camera 21 input from the gyro sensor 14. In addition, an image indicating the shooting range β shot by the camera 21 is displayed.

In S12, the touch panel 122 is operated and an operation for designating the icon α is accepted.
In S14, it is determined whether or not the operation for designating the icon α within the shooting range β in S12 has been accepted. If not accepted (S14: NO), a standby process is executed. On the other hand, when the designated operation is accepted (S14: YES), the process of S16 is executed.

  In S16, as described in the column “How to obtain the display position and display range where the landmark is displayed on the monitor”, the image is taken by the camera 21 and specified in S14 among the images displayed on the monitor 12. Processing to identify the display position and display range of the selected landmark from current position information, landmark position information, camera shooting direction information, distance information between the landmark and the current position, and landmark dimension information. Executed.

  In subsequent S 17, the image displayed by the camera 21 and displayed on the monitor 12 is displayed on the display position and display range of the landmark specified in S 16, with the thick display frame information specified by the highlight display frame information stored in the HDD 13. A process of combining the height and color highlight frames and displaying the combined image is executed.

Next, in S <b> 18, it is determined whether or not an operation for instructing the end of the operation for correcting the display deviation has been performed on the touch panel 122.
In this determination (S18), if there is no deviation between the size and position of the highlight frame and the landmark displayed on the monitor 12, an operation for instructing the end of the operation for correcting this deviation is made (S10: YES). , S22 is executed.

  On the other hand, in this determination (S18), when the operation for instructing the end of the operation for correcting the display displacement is not performed on the touch panel 122 (S18: NO), the operation of S20 is executed.

  In S20, the touch panel 122 is operated, and the process of shifting the position of the highlight frame to the position where the landmark is displayed or correcting the size of the highlight frame to the size at which the landmark is displayed is executed. .

  Specifically, when the touch panel 122 where the highlight frame is displayed is pressed with a finger, the highlight frame is dragged, and the finger is moved to trace the position on the touch panel 122 to the position where the landmark is displayed. In this embodiment, the processing for moving the highlight frame is performed in this embodiment, so that an operation for shifting the position of the highlight frame to the position where the landmark is displayed is performed by performing the drag and move operation. .

  Also, if the finger holding the touch panel 122 where the highlight frame is displayed is released for a short time and pressed immediately, the size of the highlight frame will change by 5%, and 130% from the initial size. In this embodiment, the display is performed so as to increase to 70% and then increase by 5% again. Therefore, when the operation of hitting the touch panel 122 with a finger is repeated, the size of the highlight frame is changed. The operation is performed.

Then, returning to S18 again, when an operation for instructing the end of the operation for correcting the display deviation is performed (S18: YES), the process of S22 is executed.
In S22, when correction for shifting the position of the highlight frame is performed in S20, information indicating how many times the position before and after shifting the highlight frame is moved around the viewpoint O. Information regarding correction values such as (information regarding angles shifted in the x-axis direction and y-axis direction) and the ratio of changing the size of the highlight frame are stored in the HDD 13.

When the operation in S20 is not performed, the storage in the HDD 13 is not executed.
Then, when S22 ends, this process (calibration process) ends.
6). Landmark Highlight Display Processing Next, landmark highlight display processing executed by the central control device 11 will be described.

  In this landmark highlighting process, when a landmark such as a landmark or a destination approaches during the route guidance process, the landmark in the image taken by the camera 21 is highlighted. This is a process of displaying the highlighted image.

Here, FIG. 6 is a flowchart of the landmark emphasis display process.
This landmark highlighting process is a process having steps (hereinafter referred to as “S”) 40 to S52 as shown in FIG.

  The landmark highlighting process is started when an operation for instructing the execution of this process is performed on the touch panel 122 of the monitor 12 while the route guidance process is being performed.

In S40, during the route guidance, it is determined whether or not the landmark designated in the landmark setting process described above or the destination of the route guidance is within 2 km.
This determination is input from the GPS receiver 20 with the landmark position information stored in the HDD 13 in the landmark setting process described above, the destination position information stored in the HDD 13 when setting the guidance route, and the like. It is determined based on the current position information.

If it is determined in this determination (S40) that the landmark has come within 2 km from the current position, the processing of S44 is executed.
On the other hand, if it is determined that the landmark has not approached within 2 km from the current position, the process of S42 is executed.

In S <b> 42, it is determined whether or not an operation for instructing display of the highlighted image is performed on the touch panel 122 of the monitor 12.
If it is not determined in S42 that the operation for instructing the display of the highlighted image has been executed (S42: NO), the process of S40 is executed again. If it is determined that this operation has been executed (S42: YES), the process of S44 is executed.

  In S44, as described in the column “How to determine the display position and display range where the landmark is displayed on the monitor”, the landmark determined to have approached in S21 on the image taken by the camera 21. And a process for specifying a display position and a display range where the destination is displayed.

  In S46, based on the correction value stored in the HDD 13 by the calibration process described above, a process of changing the display position and display range of the highlight frame specified in S44 by the correction value is executed.

In S48, a process of combining the highlighted display frame with the display position and display range of the highlighted display frame corrected in S46 and the image captured by the camera 21 and displaying the image on the monitor 12 is executed.
In S50, an affirmative determination is made in S40 (S40: YES), and when the processes in S44 to S48 are executed, it is determined whether or not the destination or landmark, which is a landmark, has approached within 100 m.

This determination is made based on the landmark position information used in the determination of S40 described above and the current position information input from the GPS receiver 20.
If it is determined in this determination (S50) that the destination or landmark, which is a landmark, is within 100 m (S50: YES), the process of S20 is executed again, and the monitor 12 displays the route guidance. A map of is displayed.

On the other hand, if it is determined in this determination (S50) that the destination or landmark, which is a landmark, is not approaching within 100 m (S50: YES), the process of S52 is executed.
In S52, it is determined whether or not an operation for instructing to end the display of the highlighted image is performed on the touch panel 122 of the monitor 12.

  If it is not determined in S52 that the operation for instructing to end the display of the highlighted image has been performed (S52: NO), the process of S44 is performed again, and the current position newly received by the GPS receiver 20 A new highlighted image is displayed based on the information and the image captured by the camera 21.

  By continuously executing the processing from S44 to S52 in this way, the monitor 12 displays a moving image in which the landmark is highlighted and approaches the landmark as the vehicle moves. .

On the other hand, if it is determined in S52 that an operation for instructing the end of the display of the highlighted image has been executed (S52: YES), the process of S20 is executed again and the monitor 12 displays the route guidance. A map of is displayed.
7). Features of the Car Navigation Device According to the Embodiment When the car navigation device 1 described above is used, when receiving a route guidance, when a landmark or destination that becomes a point for grasping the guidance route approaches, the landmark or destination Is displayed on the monitor 12, and the driver can intuitively grasp the landmark and the destination by looking at the monitor 12, so that the guide route can be accurately grasped. it can.

Further, when the above-described car navigation device 1 is used, the landmark and the destination are highlighted on the monitor 12 at an appropriate position even if there is a camera attachment error or the like by the calibration process. Even a person unfamiliar with can use the car navigation device 1 of the present embodiment.
8). Correspondence Relationship between Embodiments and Invention Specific Items A landmark or a destination building of the present embodiment corresponds to a landmark of the present invention.

The landmark setting process of this embodiment corresponds to the landmark setting means of the present invention.
The process of S44 of this embodiment corresponds to the position range specifying means of the present invention.
The process of S48 of this embodiment corresponds to the processing display control means of the present invention.

The process of S40 of this embodiment corresponds to the approach determination unit of the present invention.
The processes of S20 to S22 and the touch panel 122 of the present embodiment correspond to the position change operation means and the range change operation means of the present invention.

Processing of S46 in the present embodiment corresponds to the first calibration means and the second calibration means of the present invention.
[Second Embodiment]
Next, a second embodiment to which the present invention is applied will be described with reference to the drawings.

In the description of the second embodiment, only differences from the first embodiment described above will be described, and the same components will be described using the same reference numerals.
Here, Fig.7 (a) is a block diagram which shows the internal structure of the car navigation apparatus 1 of this embodiment.
1. Overall Configuration As shown in FIG. 7, the car navigation device 1 of this embodiment includes a communication device 15 for wirelessly communicating with a general public line of a mobile phone, unlike the first embodiment.

Further, unlike the first embodiment, the car navigation device 1 of the present embodiment stores physique information related to the average physique of a person in the HDD 13.
2. Position Information Acquisition Process Next, the position information acquisition process executed by the central controller 11 will be described.

This position information acquisition process is a process executed by using the communication device 15 and communicating with a mobile phone via a general public line.
Here, FIG. 8 is a flowchart of the position information acquisition process. The process executed on the car navigation device 1 side is called a navigation side process, and the process executed on the mobile phone side is called a telephone side process.

As shown in FIG. 8, the position information acquisition process is a process having steps (hereinafter referred to as “S”) 60 to S76.
This position information processing is started when the central controller 11 receives an operation for operating the touch panel 122 of the monitor 12 and instructing execution of the position information acquisition process.

In S60, it is determined whether the touch panel 122 of the monitor 12 is operated and an operation for instructing transmission of the location information of the mobile phone is executed.
If it is determined in this determination (S60) that an operation for instructing transmission of the location information of the mobile phone has been performed (S60: YES), the process of S62 is performed, and this operation is not performed. If it is determined (S60: NO), a standby process is executed.

In S62, a process for transmitting a signal for requesting the mobile phone to transmit the position information of the mobile phone (hereinafter referred to as “position request signal”) is executed, and the process of S64 is executed.
On the other hand, in the mobile phone, when the position information acquisition process is started, a process of determining whether a position request signal is received from the car navigation device 1 (S70) is executed, and a process of waiting until the position request signal is received is performed. Executed (S70: NO)
If the mobile phone receives the position request signal and determines that the position request signal has been received in S70 (S70: YES), the process of S72 is executed.

In S72, it is determined whether or not an operation in response to the position request signal has been performed on the mobile phone.
On the mobile phone side, when the position request signal is received in S70, an image indicating the reception is displayed on the monitor of the mobile phone.

Therefore, the owner of the mobile phone operates whether to respond to the position request signal received in S70 using the operation device of the mobile phone.
Then, if it is determined that an operation that does not respond is performed by this operation (S72: non-notification), the processing of S76 is executed, and it is determined that an operation that responds (corresponding to an operation that specifies the mark of the present invention) is performed. (S72: Notification) The processing of S74 is executed.

In S74, a process of transmitting the position information of the mobile phone to the car navigation device 1 is executed.
In recent years, mobile phones having a current position search function for checking the position of a mobile phone by receiving a signal transmitted from a GPS satellite have become widespread.

In S74, a process of transmitting information related to the current position of the mobile phone searched by the current position search function provided in the mobile phone to the car navigation device 1 is executed.
Then, when the process of S74 is executed, the position information acquisition process ends.

  In S76, a process of transmitting a signal notifying that the current position of the mobile phone is not transmitted to the car navigation apparatus 1 is executed. When the process of S76 is executed, the position information acquisition process ends.

  On the other hand, on the car navigation device 1 side, in the process of S64, a process of determining whether or not information related to the current position of the mobile phone has been received from the mobile phone by the process of S74 is executed.

  If it is determined in this process of S64 that information regarding the current position of the mobile phone has not been received (S64: NO), the process of S68 is executed, and if it is determined that it has been received (S64: YES). , S66 is executed.

In S66, a process of storing information related to the current position of the mobile phone received from the mobile phone in the HDD 12 as the mobile phone position information is executed, and this position information acquisition process ends.
In S68, it is determined whether or not information indicating that the current position of the mobile phone is not transmitted from the mobile phone. If it is determined that the information has not been received (S68: NO), the process of S64 is executed again. Is done.

  Then, by repeating S64 and S68, a process of waiting until information related to the current position is received from the mobile phone or information not receiving information related to the current position is received is executed.

On the other hand, if it is determined in S68 that the mobile phone has received information indicating that the current location of the mobile phone is not transmitted (S68: YES), the location information acquisition process ends.
3. Landmark Highlight Display Processing Next, landmark highlight display processing executed by the central control device 11 will be described. However, only differences from the first embodiment will be described.

  In the present embodiment, in the process of S40 of the landmark highlighting process shown in FIG. 6, based on the information about the current position of the mobile phone stored in the HDD 13 in S66, whether the mobile phone was approached within 2 km during route guidance It is determined whether or not.

In S <b> 44, a process of specifying a display position and a display range displayed on the image taken by the camera 21 by a person who has a mobile phone is executed.
At this time, the person who has the mobile phone uses the information related to the current position of the mobile phone received in S66 and the information related to the physique of the person stored in the HDD 12 for the highlighted display range.

In S48, a process of combining the highlighted display frame with the display position and display range of the highlighted display frame corrected in S46 and the image captured by the camera 21 and displaying the image on the monitor 12 is executed.
At this time, as shown in FIG. 9, the highlight screen is displayed in a form surrounded by a highlight frame in the image captured by the camera.
4). Features of the Car Navigation Device According to the Embodiment When the car navigation device 1 described above is used, in addition to the features shown in the first embodiment, when meeting with a person, the mobile phone held by the person can be If information about the current position of the telephone is received, when the person approaches the place where the person is standing, an image showing the front of the vehicle with the person highlighted is displayed on the monitor 12. One can quickly find the person who is waiting in the car that is running.
5. Correspondence Relationship between Embodiments and Invention Specific Items The communication device 15 of the present embodiment corresponds to the wireless communication means of the present invention.
[Other embodiments]
In the above-described embodiment, an example of highlighting a person standing outside or the building itself has been shown. However, as shown in FIG. In such a case, a part of the building may be highlighted.

  In the description of FIG. 2A, the display surface B of the monitor 12 perpendicular to the ground surface A is shown. This is for explaining what the image displayed on the monitor 12 looks like. It does not indicate that the monitor 12 must be arranged perpendicular to the display surface B.

  Further, the present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

(A) is a block diagram showing an internal configuration of the car navigation device 1 of the first embodiment, and (b) is a list of specific examples of information stored in the HDD 13. It is explanatory drawing for demonstrating how to obtain | require the display position and display range which a landmark displays on the monitor 12, (a) is the display position of a landmark, (b) is how to obtain | require the display range of a landmark. It is explanatory drawing for demonstrating. (A) It is explanatory drawing explaining the shift | offset | difference of the position and range where a highlight is performed, and the position and range where a landmark is displayed, (b) is when performing operation which selects the landmark used for a calibration process It is explanatory drawing of the selection screen displayed on the monitor 12. It is a flowchart of a calibration process. It is a flowchart of guidance object specific processing. It is a flowchart of guidance object emphasis display processing. It is a block diagram which shows the internal structure of the car navigation apparatus 1 of 2nd Embodiment. It is a flowchart of a positional information acquisition process. It is explanatory drawing of the highlight display image when the guidance object highlight display process is performed in 2nd Embodiment. It is explanatory drawing for demonstrating the other example of a highlight display image.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car navigation apparatus, 10 ... Main body, 11 ... Central control apparatus, 12 ... Monitor apparatus (monitor), 14 ... Gyro sensor, 15 ... Communication apparatus, 20 ... GPS receiver, 21 ... Camera, 121 ... Image display part, 122 ... Touch panel

Claims (3)

A car navigation device attached to a vehicle and performing route guidance,
A camera that captures a landscape around the vehicle;
A monitor,
Wireless communication means for wirelessly communicating with a communication device capable of specifying the landmark for landmark guidance as a landmark for driving;
Mark body setting means for wirelessly transmitting to the communication apparatus using the wireless communication means, and setting the mark designated by an operation performed in the communication apparatus as a mark body;
Position range specifying means for specifying a display position and a display range in which the landmark set by the landmark setting means is displayed in an image photographed by the camera and displayed on the monitor;
Processing display control means for processing an image captured by the camera into a highlighted image in which the display range is highlighted at the display position, and displaying the processed image on the monitor;
An approach determining means for determining whether the vehicle has approached a predetermined distance to the landmark;
Position changing operation means for receiving an operation of moving the display position on the highlighted image;
After the position changing operation means accepts an operation to move the display position, a first calibration means for performing correction to move the display position specified by the position range specifying means by the moved movement difference;
With
The processing display control means includes
When the approach determination means determines that the vehicle has approached the predetermined distance to the landmark, the highlighted image with the display position corrected by the first calibration means is displayed on the monitor. car navigation device, characterized in that it makes. In the car navigation device according to claim 1 ,
Range changing operation means for receiving an operation for changing the display range on the highlighted image;
A second calibration unit that performs correction to change the display range specified by the position range specifying unit by the changed ratio after the range changing operation unit receives an operation of changing the display range; With
The display control means includes
The car navigation apparatus, wherein the highlighted image whose display range is corrected by the second calibration means is displayed on the monitor. A car navigation device attached to a vehicle and performing route guidance,
A camera that captures a landscape around the vehicle;
A monitor,
Wireless communication means that wirelessly communicates with a communication device capable of specifying the landmark for landmark guidance as a driving mark;
Mark body setting means for wirelessly transmitting to the communication apparatus using the wireless communication means, and setting the mark designated by an operation performed in the communication apparatus as a mark body;
Position range specifying means for specifying a display position and a display range in which the landmark set by the landmark setting means is displayed in an image photographed by the camera and displayed on the monitor;
Processing display control means for processing an image captured by the camera into a highlighted image in which the display range is highlighted at the display position, and displaying the processed image on the monitor;
An approach determining means for determining whether the vehicle has approached a predetermined distance to the landmark;
Range changing operation means for receiving an operation for changing the display range on the highlighted image;
A second calibration unit that performs correction to change the display range specified by the position range specifying unit by the changed ratio after the range changing operation unit receives an operation of changing the display range;
With
The processing display control means includes
When the approach determination means determines that the vehicle has approached the predetermined distance to the landmark, the highlighted image with the display range corrected by the second calibration means is displayed on the monitor. car navigation device, characterized in that it makes.

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