JP2000112343A - Three-dimensional display method for navigation, and navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a building nearly invisible by showing a building for example by a simple frame display, in a navigation device equipped with a three- dimensional display function of buildings, as a measure to deal with anxiety of a driver, since he/she is not in a position to see in advance the state of the road after turning to the left or right if a three-dimensionally displayed building appears left or right on the nearer side of an intersection before turning. SOLUTION: In displaying buildings three-dimensionally (S1), the device discriminates if a map on the screen shows an intersection where a left or right turn is expected (S2); if it does, the device further discriminates whether a three-dimensionally displayed building exists on the nearer turning side of such intersection (S3); if the building exists, it is displayed three-dimensionally in a frame, with the inside colored translucently in red, for example (S4), and other building are provided with normal three-dimensional display or a simple wire-frame display so as to be distinguished from the building in question (S5).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for guiding a vehicle or the like along a predetermined route, and more particularly, to displaying a building or the like in a three-dimensional manner on a map by using a three-dimensionally displayed building in an intersection. The present invention relates to a three-dimensional display method for navigation and a navigation device so as not to hinder guidance when turning left.

[0002]

2. Description of the Related Art A vehicular navigation device not only displays a map around a current location but also automatically sets a guidance route from a current location to a destination by designating the destination, and then follows the guidance route. In particular, by instructing a right or left turn at an intersection, it is possible to quickly, safely, and surely guide to a destination, and it is widely used. In this navigation device,
Various researches and developments have been carried out to make it easier for users to use and provide reliable guidance.
This is a so-called 3D navigation system in which a three-dimensional image is displayed on a map so that the driver can travel while checking whether or not the scenery currently being viewed by the driver matches the scenery being displayed. , 3D display navigation is developing.

In such a three-dimensional display navigation system, at first, high-rise buildings, characteristic bridges, towers, and the like are appropriately arranged, but thereafter, more buildings, such as buildings, are displayed. In particular, attempts have been made to display a building in a three-dimensional manner on an intersection enlarged display section. In particular, in recent years, DVD-ROMs having a large storage capacity have been developed, so that an extremely large number of images can be stored, and the processing speed of the images has been improved by improving the performance of the navigation device. DVD-ROM data
Etc. and read it out according to the running of the vehicle,
It can be displayed. for that reason,
For major roads, at least a three-dimensional display of buildings around the road on a map screen on a plane, the driver compares the actual scenery around and the image displayed on the navigation device,
It has also been proposed to be able to drive while checking this.

[0004]

As described above, when three-dimensionally displaying buildings around a road, there is no particular problem on a straight road where no right or left turn is planned, but right and left turns at a predetermined intersection. When there is a three-dimensionally displayed building at the intersection, a part of the road on which the driver intends to turn left and right disappears behind the three-dimensionally displayed building and disappears. You may be wondering if you can turn left. For example, as shown in FIG. 15A, when the vehicle 50 is about to turn left at the next intersection 52 of the road 51 on which the vehicle is currently traveling, a three-dimensional display is provided in front of the intersection 52, especially on the side on which the user is going to turn left. Since the building 53 is present, for example, as shown by a two-dot chain line in FIG. 15 (b), a left turn 54 exists, and the intersection 52 is a crossroad or a left turn as shown in FIG. 15 (c). There is no road, and it is not clear whether this intersection is a three-way intersection. Therefore, the driver can check the state of the actual intersection with his / her own eyes immediately before the intersection, and can take the left-turn system only when it is known that there is a left-turn road.

[0005] As described above, displaying a building in three dimensions is often a convenient function for a driver. On the other hand, when there is a building in front of the side on which an intersection is going to bend, the state of the intersection cannot be understood. There was a drawback that made the driver feel uneasy. As a countermeasure, for example, as shown in Japanese Patent Application Laid-Open No. 9-318381, when a three-dimensionally displayed building blocks a road to be a course, a three-dimensionally displayed building is displayed by a wire frame,
There has also been proposed a flashing display and a translucent display so that a road to be taken can be seen.

However, when a three-dimensionally displayed building that blocks the road to be taken is displayed in a wire frame, the presence of the building is not actually known, and the building in front of the turning direction that should be the guideline is most practical. Is difficult to recognize. Also, when blinking, if the building is blinking so that the road behind the building can be seen enough, the blinking must be blinking mainly on the state of the road, and the driver must The shape, etc. cannot be seen clearly. Furthermore, even when displaying in a translucent manner, it is necessary to have a translucency enough to see the road existing on the back side of the building, and for the driver to fully understand the shape of the building with such translucency. As a result, the above-mentioned means cannot always be said to have solved the above-mentioned problems. In addition, as for the display of the intersection part, it is unclear whether or not to make a right or left turn at this intersection only with the display as described above. There must be some guidance sign above.

Therefore, the present invention provides a method for turning right and left at an intersection even when a building is displayed in three dimensions.
At the intersection, there is a three-dimensional display building in front of the side where you are going to turn, so even if you can not understand the state of the road at the intersection, you need to block the display of the road so that you can fully understand the road at the intersection. Stereoscopic display method for navigation, which can clearly display the shape and the like of a building that is present, and can be displayed to the driver without separately providing a guidance display for turning right or left at the intersection, and It is an object to provide a navigation device for implementing the method.

[0008]

According to the first aspect of the present invention, there is provided a navigation stereoscopic display method for stereoscopically displaying a building on a map, comprising the steps of: A three-dimensional navigation structure, in which the building displayed on the front side of the road in the direction of left turn is displayed in a frame, the inside of the frame is colored and transparent, and the display format is different from other buildings. According to a second aspect of the present invention, there is provided the navigation three-dimensional display method according to the first aspect, wherein the another building is displayed in a frame. The invention according to claim 3 is the stereoscopic display method for navigation according to claim 1 or 2, wherein traffic regulation information is displayed on the road in the direction in which the vehicle turns left or right. In the invention according to 4, in which the navigation for three-dimensional display method according to any one of claims 1 to 3 only buildings around the intersection of the right or left turn formed by the stereoscopic display.

In the invention according to claim 5, a building discriminating means for discriminating whether or not there is a three-dimensionally displayed building in front of a turning side of an intersection where the intersection turns right and left on the screen. The navigation device according to claim 6, further comprising a stereoscopic image deforming unit that stereoscopically displays the image in a frame, performs a transparent coloring process on the inside, and changes a display format from other buildings. The three-dimensional image transforming means may be a navigation device according to claim 5, wherein the other building is displayed in a frame, and according to the invention according to claim 7, traffic restriction is performed on a road in a direction of turning right or left. The navigation device according to claim 5 or 6, further comprising traffic information display means for displaying information. In the invention according to claim 8, the navigation apparatus according to claim 8, wherein Is obtained by the navigation device according to any one of claims 5 to 7 the buildings surrounding the intersection only formed by the stereoscopic display of the right or left turn,
Further, in the invention according to claim 9, the navigation device according to any one of claims 5 to 8, wherein the three-dimensional image deformation means displays a building covering the right-left turn road in a frame. It is.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 5 is a configuration diagram of a navigation device embodying the present invention. In the navigation control device 100, a GPS receiver 102 having a GPS antenna 101 is provided.
From the data storage unit 103, the self-contained navigation sensor 1 having an angle sensor 104 and a distance sensor 105
The signal from the control unit 06 is taken into the vehicle position / direction calculation unit 107, and basic data of the own vehicle position is obtained based on both signals. The information received by the VICS receiver 140 is
It enters the VICS information buffer 141, is temporarily stored, and is sequentially rewritten with new information. This VI
As the CS information, information relating to the current position and the guidance route is extracted, and the image synthesizing unit 1 is transmitted via the VICS information display unit 142.
23. Also, signals from the remote controller 110, the touch panel 111, and various operation switches 112 enter the external signal input unit 113, respectively, and serve as command signals for the navigation device user.

The navigation control device 100 includes a DVD-ROM that has recently been used, a CD-ROM that has been widely used, and other ROM devices.
Alternatively, RA can be written if necessary.
A DVD-ROM including a storage device having an M portion, a storage device such as a storage device, and a driving mechanism for driving the storage device.
115 is connected to a map storage / output unit,
The VD-ROM outputs a map of a predetermined area based on a signal from a ROM reading control unit 116 described later, and temporarily stores the signal in a map buffer 117.

In the navigation control device 100, the map matching control unit 119 compares the vehicle position basic signal with the map signal from the map buffer, and superimposes the vehicle position on the road position on the map by map matching. This signal is used as the "own vehicle position", and the ROM readout control unit 116, the guidance route control unit 120, and the intersection guidance unit 121
Output to In the intersection guidance unit 121, the own vehicle position signal from the map matching control unit and the guidance route control unit 1
The approaching intersection signal calculated in step 20 and the map buffer 117
Intersection guidance is performed based on the map signal from the intersection, and in particular, the image processing unit 122 in the intersection guidance unit 121 creates a plane enlarged image of the intersection and the like. From this intersection guidance section 121,
In order to perform voice guidance such as "Please turn right at the next signal.", A guidance voice signal is output to an external audio unit, and an intersection enlarged image is output to the image synthesis unit 123.
An enlarged intersection image is displayed on a part of the screen or on the entire screen.

A map signal from the map buffer 117 is supplied to a map drawing section 1 for displaying a map on the image display device 124.
25, the signal enters the read control unit 127 via the VRAM 126, and the read control unit 127 outputs a desired image to the image synthesizing unit 123 based on the screen center position signal. The command signal from the external signal input unit 113 is output to the operation screen generation unit 130, the various mark generation units 131, the guidance route drawing unit 132, and the guidance route control unit 1
In particular, it outputs signals of “current location”, “transit point”, and “destination” among various signals.

The guidance route control unit 120 receives the vehicle position signal, the map signal, the "current location", "transit point", and "destination" signals, as well as the focus position from the ROM readout control unit 116. Then, a guidance route search is performed based on the various signals. The signal from the guidance route control unit 120 is stored in the guidance route memory 133, and the signal is output to the map matching control unit 119 and to the guidance route drawing unit 132.

From the DVD-ROM 115, in addition to the map images stored in the map buffer 117, various three-dimensional images are taken into a three-dimensional image buffer 150.
Buildings such as bridges and towers are read out to be displayed on a map and imaged by the three-dimensional image forming unit 152. Since the stereoscopic image data of the building or the like is paired with the display coordinate data, the display coordinate data is read by the stereoscopic image position detecting unit 154 and output to the stereoscopic image deforming unit 153. On the other hand, when the intersection guide unit 121 detects that there is an intersection that turns right and left in the map on the screen, the information is output to the three-dimensional image transformation unit 153. As will be described in detail later, the three-dimensional image forming unit 15
In the image formed in step 2, the three-dimensional image of the building located in front of the right or left turn at the intersection where the right or left turn is performed is transformed into a wire frame shape, and the inside of the frame is colored transparent and red. . This image is stored in the image synthesis unit 12
3 is synthesized and displayed on the map screen when the vehicle approaches the intersection by a predetermined distance.

In the image synthesizing section 123, as described above, the map image from the read control section 127, the enlarged image of the intersection from the intersection guide section 121, and the three-dimensional image from the three-dimensional image forming section 152 passing through the three-dimensional image deforming section 153. , VICS information from the VICS information display unit 142, an image for facilitating operation input from the operation screen generation unit 130, a mark image from the various mark generation units 131, and an image from the guidance route drawing unit 132 Image display device 1 in combination
An image is displayed at a predetermined position of 24. In this way, the driver or the like of the vehicle can travel on the guidance route reliably and safely.

In the navigation device configured as described above, the basic processing of the present invention is performed based on the flow shown in FIG. That is, at the time of using this navigation device, it is determined in step 1 whether or not the building is to be stereoscopically displayed. This determination is made based on whether or not the user has performed a mode switching operation of whether or not to perform stereoscopic display, for example, when a building is standing on the screen and the map is difficult to see when using the navigation device. can do.

In step 1, when the user has selected the mode of displaying the building in three dimensions, in step 2, it is determined whether or not there is an intersection to be turned right or left on the map currently displayed on the screen. . This determination is made by the guidance route control unit 1 in the intersection guidance unit 121 shown in FIG.
20 and the map matching control unit 1
19, and the image display range signal from the read control unit 127.

As a result, when it is determined that there is an intersection scheduled to make a right or left turn on the map on the screen, in step 3, it is determined whether or not there is a building to be stereoscopically displayed in front of the intersection on the turning side. In other words, if there is a three-dimensional display building in front of the intersection, the part of the intersection where you plan to turn right or left will be hidden behind the building and you will not be able to see it. The user is anxious whether there is a road to go. Further, since the state of the road immediately after the right or left turn is not known, it is not possible to know, for example, a situation where another road intersects the road immediately after the right or left turn. Therefore, it is determined here whether or not a situation occurs in which the state of the road after turning right or left is lost at the intersection. The determination is based on the data of the three-dimensional image position detection unit 154 and the data of the intersection guidance unit 121 shown in FIG.
This can be performed by comparing and determining the positional relationship. This step 3 and the above-mentioned device for performing the step 3 correspond to a building determining means.

If it is determined in step 3 that a building as described above exists, then in step 4,
The building is displayed in a frame, and the inside of the frame is displayed in a transparent color such as red. Thereby,
For example, as shown in FIG. 6, when the vehicle 1 is traveling on the road 2 and intends to make a left turn at the intersection 3, the building 5 exists before the road 4 on the left turn side of the intersection 3.
And the inside of the frame 6 is displayed in transparent red. By displaying in this manner, it is possible to inform the driver that there is a road 8 further intersecting with the road 1 on the road 4 after the left turn, and the driver can perform safe driving in preparation for the presence. . It is natural that various colors besides the above-mentioned red are used for the color to be colored at this time. However, colors that are frequently used as the background of the screen are not preferable because they are inconspicuous. In the present invention, since the position of the intersection where the vehicle is to turn right and left and the direction of the intersection are indicated by the frame of the colored building, it is preferable that this color is a particularly conspicuous color.

Next, in step 5, another building is displayed in another three-dimensional display format. That is, in the embodiment shown in FIG. 6, the other buildings 7, 7 are displayed in a non-transparent ordinary three-dimensional form. In this way, by providing a three-dimensional display in which the building 6 and the other building 7 are distinguished from each other, it is possible to clearly indicate that a left turn is to be made at the building.

In step 2 described above, if it is determined that there is no intersection to be turned on the map on the screen, or if there is such an intersection, step 3
When it is determined that there is no building to be stereoscopically displayed in front of the intersection on the turning side, in step 6, the building on the screen is displayed in a normal stereoscopic display format. If the user does not select the stereoscopic display mode in step 1 in determining whether to display the building in stereo, in step 7, a planar map is displayed on the screen to guide the user.

In the above embodiment, the ordinary stereoscopic display format shown in FIG. 6 is used as an example of another stereoscopic display of another building in step 5, but as shown in the flow of FIG. After executing Step 4 in the flow of FIG. 1, in Step 10, another building may be stereoscopically displayed in a frame. Further, in the embodiment of FIG. 2, instead of Step 6 of the flow of FIG. 1, as Step 11, all buildings are stereoscopically displayed in a frame as in Step 10. Thereby,
For example, as shown in FIG. 7, the other buildings 7, 7 are displayed in a frame, and the situation of the buildings is difficult to understand, but the overall state of the intersection or the surrounding roads can be clarified.

On the other hand, as shown in FIG. 5, when the navigation device is equipped with a VICS receiver and receives traffic information, traffic regulation information, etc., the steps shown in FIG. After the building in 3 is displayed three-dimensionally with a frame and colored transparent, it is determined in step 13 whether there is a traffic restriction in the turning direction. If it is difficult, in step 14,
Display traffic regulation information on the road you plan to turn. When there is no such traffic regulation, the traffic regulation information is not displayed in step 15 as a matter of course. Such a situation is shown in FIG. That is, at the intersection 3 where the vehicle turns left, when information indicating that the end of the road 4 is impassable due to construction or the like is entered, this information is placed near the road of the building 5 which is framed and transparently colored. At the end of the road, it is displayed that traffic is not allowed.

In the embodiment shown in FIGS. 6 to 8, the same road map is shown and described in order to clarify the difference between them in comparison with the conventional example shown in FIG. As another road condition, for example, as shown in FIG. 9, there is an area where many buildings are in a forest. In this area, when driving on the road, DVD
It is conceivable that stereo image data of each building is stored along with road data stored in the ROM, read out, superimposed and displayed on a map, and displayed while the driver is actually looking outside. ing. In connection with this display, it has been proposed to separately display a company or the like in each building. At that time, as shown in FIG. 10, the periphery of the running road is surrounded by a group of buildings, and the road that turns right and left becomes extremely difficult to see. For example, in FIG. 10, when the car 10 going down the National Highway No. 1 is about to turn left at the intersection 11 at Toranomon 3-chome, the situation at this intersection is extremely difficult to see, and the situation after turning is completely unknown.

In the present invention as described above, first, as shown in FIG. 11, the building 12 in front of the left turn road of the intersection 11 is displayed in a frame, and the inside of the building 12 is displayed in a transparent color. Become. However, as shown in the figure, the road 14 after the left turn is hidden by the building 13 in front of it and cannot be seen. In such a case, as shown in FIG.
Displays the building in front of it in a frame until is displayed. In this case, this building can be simply displayed as a frame, but similarly to the building 12, it may be displayed in a transparent and colored form.

Further, as shown in FIG. 13, after the building 12 is subjected to the transparent coloring process, all the other buildings can be displayed by frames as shown in the flow chart of FIG. When all the other buildings are frame-processed in this way, it is not necessary to display all the buildings individually in a frame shape such as a rectangular parallelepiped, and the three-dimensional display format of the building shown in FIG. It may be displayed in a frame. As a result, a display in which the building of the frame displayed in three dimensions is present on the planar map shown in FIG. 9 is provided, and the situation of the building is difficult to see, but the situation of the road can be easily seen.

Further, as shown in the flow chart of FIG. 4, after step 4 of the flow chart of FIG. 1 is executed, as step 17, only the other buildings of the turning intersection may be stereoscopically displayed. That is, as shown in FIG.
Is displayed in a transparent color with a frame, while only the buildings 15, 16, 17 other than the building 12 among the four corner buildings of the intersection 11 are displayed in three dimensions, and the other buildings are not displayed. Such a display method can be changed to this display from the time when the guidance to turn left at the intersection is performed, but the mode to set only the intersection to turn right and left for the building to be displayed three-dimensionally on the road, and set the mode to When the user makes a selection, such a display can be made at all times.

In the present invention, furthermore, the degree of transparency of the building is changed in various ways, the color is changed depending on the building or the surrounding conditions, the color is changed depending on the driving situation, and the building for displaying the frame is displayed. It can be arbitrarily selected, and the above-mentioned various display modes can be further changed in driving conditions,
Alternatively, there are various embodiments such as various selections by a user arbitrarily selected, and it goes without saying that these are all within the scope of the present invention.

[0030]

According to the first and fifth aspects of the present invention, as described above, the building displayed on the front side of the road in the direction of turning right or left at the intersection where the vehicle turns left or right is framed. In addition to the display, the inside of the frame was colored and transparent, and the display format was different from other buildings, so the three-dimensionally displayed building, the road in the direction of turning left and right was shaded behind the three-dimensionally displayed building It is possible to prevent hiding and making it difficult to see, the driver can clearly see the situation at the intersection, not only can safely guide the vehicle near the intersection, but also colored at the point where it turns right and left Since the buildings are displayed, the driver can easily recognize the intersection where the vehicle turns left and right, and also know the direction of turning right and left. It is possible to perform the point guide.

In the invention according to claim 2 and claim 6, the other building is displayed in a frame.
It is possible to prevent the map from being difficult to see due to the three-dimensionally displayed building. Claims 3 and 7
In the invention according to the invention, since the traffic regulation information is displayed on the road in the direction of turning right and left, the road in the direction of turning right and left is clarified as described above, and further, the traffic regulation information in the direction of intersection is And the vehicle can be guided reliably and safely. Claims 4 and 8
In the invention according to the above, since only the building around the intersection turning right and left is three-dimensionally displayed, the building is not displayed in a portion other than the intersection, and guidance of the intersection portion that particularly needs guidance mainly Can be surely performed by the three-dimensional display of the building of only that part, and the situation of the road around the intersection can be clearly seen on a flat map, making it easier to understand the situation of the road after the intersection be able to. According to the ninth aspect of the present invention, the three-dimensional image deforming means displays the building covering the right-left turn road in a frame, so that the right-left turn road can be reliably displayed. Can clearly see the situation at the intersection.

[Brief description of the drawings]

FIG. 1 is a flowchart of an embodiment of the present invention.

FIG. 2 is a flowchart of an embodiment in which a part of the flow of FIG. 1 is modified.

FIG. 3 is a flowchart of an embodiment in which a part of the embodiment of FIG. 1 is further modified.

FIG. 4 is a flowchart of another embodiment in which a part of the embodiment of FIG. 1 is further modified.

FIG. 5 is a configuration diagram of a navigation device embodying the present invention.

FIG. 6 is a screen display diagram showing a basic example of screen display according to the present invention.

FIG. 7 is a screen display diagram displayed according to the flow of FIG. 2;

FIG. 8 is a screen display diagram displayed according to the flow of FIG. 3;

FIG. 9 is a screen display diagram showing a planar map before applying the present invention.

FIG. 10 is a screen display diagram before the present invention is applied, in which a building is three-dimensionally displayed on the planar map of FIG. 9;

11 is a screen display diagram in which the present invention is applied to the screen display state of FIG.

FIG. 12 is a screen display diagram obtained by improving the screen display of FIG. 11;

13 is another screen display diagram obtained by improving the screen display of FIG. 11;

FIG. 14 is a screen display diagram showing another embodiment of the present invention.

15A and 15B show a conventional screen display, FIG. 15A shows a display of the conventional screen display as it is, and FIG. 15B is a screen display diagram showing a first mode predicted in the display state of FIG. , (C) are the second predicted in the display state of (a).
It is a screen display figure which shows the form.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Road 3 Intersection 4 Left turn road 5 Building 6 Frame 7 Building 8 Road 100 Navigation control device 102 GPS receiver 106 Self-contained navigation sensor 115 DVD, CD-ROM 119 Map matching control unit 120 Guidance route control unit 121 Intersection guide unit 123 Image synthesizing unit 124 Display device 125 Map drawing unit 133 Guide route memory 150 Stereoscopic image buffer 152 Stereoscopic image forming unit 153 Stereoscopic image transformation unit 154 Stereoscopic image position detecting unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme court ゛ (Reference) G06T 1/00 G08G 1/0969 15/00 G09B 29/10 A G08G 1/0969 G06F 15/62 335 G09B 29 / 10 360 F term (reference) 2C032 HB06 HC21 HC22 HC23 HC27 HC30 HD07 2F029 AA02 AB09 AC02 AC14 AC16 5B050 AA10 BA09 BA17 EA18 EA20 EA28 EA30 FA02 FA05 FA14 5E501 AA23 AC03 BA03 BA09 CA02 FB27 FB05 FB02 FB05 FB05 FF05 FF07 FF22 FF24 FF38 FF40

Claims (9)

[Claims] 1. A navigational stereoscopic display method for stereoscopically displaying a building on a map, wherein the building is displayed as a frame on the front side of a road in a direction in which the vehicle turns right or left at an intersection where the vehicle turns left or right. A three-dimensional display method for navigation, characterized in that the inside of the building is colored and transparent, and the display format is different from other buildings. 2. The stereoscopic display method for navigation according to claim 1, wherein the other building is displayed in a frame. 3. The stereoscopic display method for navigation according to claim 1, wherein traffic regulation information is displayed on the road in the direction in which the vehicle turns left or right. 4. The stereoscopic display method for navigation according to claim 1, wherein only a building around the intersection turning right and left is stereoscopically displayed. 5. A building discriminating means for discriminating whether or not there is a building to be displayed three-dimensionally in front of a turning side of an intersection on which a right or left turn is to be made on the screen. A navigation device comprising a three-dimensional image deforming means for performing a coloring process and making a display format different from that of another building. 6. The navigation device according to claim 5, wherein the three-dimensional image deformation means displays the other building in a frame. 7. The navigation device according to claim 5, further comprising traffic information display means for displaying traffic regulation information on the road in the direction of the right or left turn. 8. The navigation device according to claim 5, wherein the three-dimensional image deforming means stereoscopically displays only a building around the intersection turning right and left. 9. The three-dimensional image deforming means displays a building covering the right-left turn road in a frame.
The navigation device according to claim 8.