JPH08124096A - Displaying device for present location of vehicle - Google Patents

Abstract

PURPOSE: To stereoscopically project a road map in which the present location of the driver's own vehicle is displayed on a screen to comply with an actual road conditions by providing a means displaying the road map as a stereographic image on the screen of a display for stereography by using image information composed of respective images for left and right viewpoints as map information. CONSTITUTION: In a road network information storage medium (CD-ROM) 4, the information on the road network by digital data is preliminarily stored. In a stereographic information storage medium (CD-ROM) 5, the image information composed of the images for left viewpoint and the images for right viewpoint of the stereographic display elements such as stereographic cross-points, targets and geography, etc., in a road map is stored. A control part 7 for display displays the images of the road network and the stereographic images of the stereographic display elements such as stereographic cross-points, the targets and geography, etc., on the screen of a display 8 by overlapping the images based on the road network information and the image information composed of the images for left viewpoint and the images for right viewpoint of the stereographic display elements such as the stereographic cross-points, the targets and geography, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle current position display device for displaying the current position of a vehicle on a road map displayed on a screen.

[0002]

2. Description of the Related Art Generally, in this type of vehicle current position display device, for example, the current position of the vehicle on a road map is determined based on the position measured by a position measuring means such as GPS. , The direction of the traveling direction of the vehicle is obtained by the direction sensor, and the current position P of the vehicle is displayed on the planar road map displayed on the screen as shown in FIG.
Also, a mark indicating the traveling direction D of the vehicle at the current position is displayed.

Conventionally, there is a method in which a road map is pseudo-stereoscopically displayed by using a perspective method when a road map is displayed on a screen (see Japanese Patent Laid-Open No. 3-26917).

[0004]

The problem to be solved is that if the road map showing the current position of the own vehicle is flat, it is different from the actual road condition, and the current position is sensed from the display screen. It is difficult to understand.

Further, even if a road is pseudo-stereoscopically displayed by using the perspective method, it is impossible to represent an actual grade intersection or the like.

As a road map, not only the road network,
Targets such as bridges and buildings, and terrain such as mountains and rivers are also important factors for recognizing the current position, and it is not sufficient to express only the road in a three-dimensional manner. In order to display the road map as described above, it is necessary to three-dimensionally display the elements such as the target object and the terrain.

[0007]

According to the present invention, a road map on which the current position of a vehicle is displayed is three-dimensionally displayed on a screen so as to match an actual road condition. Using image information consisting of each image for the right viewpoint,
A means for stereoscopically displaying a road map as a stereo image on the screen of the stereo display is adopted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a configuration example of a vehicle current position display device according to the present invention. A distance sensor 1 for detecting a traveling distance of a vehicle and a direction sensor 2 for detecting a traveling direction of the vehicle.
And the change of the traveling distance of the vehicle and the traveling direction, the position on the XY coordinates for each unit traveling distance of the vehicle from the starting point is sequentially calculated, and the current position on the map displayed on the screen is determined. The operation control unit 3 for controlling the entire vehicle current position display device, the road network information storage medium (CD-ROM) 4 in which the road network information based on digital data is stored in advance, and the road map A stereoscopic information storage medium (CD-ROM) 5 in which image information including a left-viewpoint image and a right-viewpoint image of a stereoscopic display element such as a three-dimensional intersection, a target object, and terrain is stored, and the respective storage media 4, 5 Based on the storage medium reproducing device 6 for selectively reading the road network information and the stereoscopic image information in a predetermined area, and the read road network information and the stereoscopic image information. And a stereoscopic road map is displayed on the stereo display 8, and the current position of the vehicle and the mark of the traveling direction at that position are updated on the road map displayed on the screen as the vehicle travels. The operation control unit 7 and the operation control unit are given an operation command, and the road map to be displayed on the display 8 is selected and designated, and the starting point and the destination of the vehicle on the displayed road map are arbitrarily set. Further, it is configured by an operation unit 9 capable of selectively giving a display command of the traveling locus and appropriately changing the setting of the display form such as partial enlarged display of the map and the traveling locus and selection of the display scale ratio. .

Instead of accumulatively calculating the current position on the XY coordinates while detecting the traveling distance and the traveling direction of the vehicle, a radio navigation means such as GPS is used on the map. It is needless to say that the current position in can be obtained directly.

The display control unit 7 is based on the road network information and the image information including the left-view image and the right-view image of the three-dimensional display elements such as the three-dimensional intersection, the target object, and the terrain.
On the display screen, as shown in,
A stereo image of a three-dimensional display element such as a three-dimensional intersection, a target object, and terrain is displayed in an overlapping manner.

As shown in FIG. 4, the display 8 can be installed with its display screen being substantially horizontal to the driver's eyes.

The stereo display 8 has a screen composed of a liquid crystal display or the like for projecting a left-viewpoint image and a right-viewpoint image alternately in a line in a pixel unit, and a left screen projected on the screen. It consists of a lenticular lens or a parallax barrier provided on the front of the screen that separates the viewpoint image and the right viewpoint image.The separated left viewpoint image and right viewpoint image are respectively left. ， By seeing with the right eye, you can observe the stereo image.

As described above, in this embodiment, when the road map is displayed on the screen, the information of the two-dimensional road network and the three-dimensional image information of the three-dimensional display elements such as the three-dimensional intersections, the target objects, and the terrain in the road map are displayed. Separately stored in a storage medium separately, and on the basis of the read road network information and image information of the stereoscopic display element in the same area, on the display screen, superimposed on the road network image,
The feature is that it displays stereoscopic intersections on the map, bridges, buildings, mountains and rivers as a stereo image.

Therefore, according to this embodiment, not all the elements of the road map are created as stereoscopic image information consisting of the left-viewpoint image and the right-viewpoint image and stored in a storage medium. It is sufficient if only three-dimensional display elements such as a three-dimensional intersection, a target object, and terrain are created as three-dimensional image information, and it is easy to create information for obtaining a road map as a stereo image.

In this embodiment, the road network information storage medium 4 and the stereoscopic information storage medium 5 are separately provided, but each of these pieces of information is stored in one storage medium (CD-ROM).
Needless to say, it may be stored in.

Further, according to this embodiment, since the road network itself is based on two-dimensional digital data, the current position of the own vehicle on the road in the road map displayed on the screen in the arithmetic control unit 3. Thus, the process of finding out can be easily performed as in the conventional case.

Although not shown in the drawing, an elevation sensor is provided, and the arithmetic and control unit 3 takes the height in the Z-axis direction into consideration in accordance with the detected elevation of the vehicle.
By obtaining the current position on the coordinates, it is easy to optimally display the current position of the own vehicle on the road map stereoscopically displayed on the screen of the stereo display 8 when traveling in the mountains. It is possible.

[0018]

As described above, in the vehicle current position display device according to the present invention, image information including left and right viewpoint images is used as map information, and a road map is displayed as a stereo image on the screen of the stereo display. By adopting a three-dimensional display means, a road map showing the current position of the vehicle can be displayed on the screen in a three-dimensional manner so as to match the actual road conditions. As a result, it becomes possible to perceptually easily recognize the current position of the own vehicle.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a vehicle current position display device according to the present invention.

FIG. 2 is a diagram showing an example of a display state of a screen in the embodiment.

FIG. 3 is a diagram showing an example of a screen display state in a conventional vehicle current position display device.

FIG. 4 is a diagram showing a state in which the display screen of the stereo display is installed at a position substantially horizontal to the driver's eyes.

[Explanation of symbols]

 1 Distance Sensor 2 Direction Sensor 3 Calculation Control Unit 4 Road Network Information Storage Medium 5 Stereoscopic Information Storage Medium 6 Storage Medium Playback Device 7 Display Control Unit 8 Stereo Display 9 Operation Unit

Claims (4)

[Claims] 1. A vehicle current position display device for obtaining the position of a vehicle on a road map displayed on a screen based on map information and displaying the current position of the vehicle on the road map. Current position for vehicle characterized by adopting means for stereoscopically displaying a road map as a stereo image on the screen of a stereo display by using image information consisting of left and right viewpoint images as information Display device. 2. The storage medium separately stores road network information and stereoscopic image information composed of a left-view image and a right-view image of a stereoscopic display element such as a three-dimensional intersection, a target object, and a terrain in a road map. The image of the road network and the stereo image of the stereoscopic display element are superimposed and displayed on the display screen based on the road network information and the stereoscopic image information in the same area that are stored and read from the storage medium. The vehicle current position display device according to the above-mentioned item 1 is characterized in that. 3. A screen for displaying a left-viewpoint image and a right-viewpoint image alternately arranged in a line unit on a pixel basis in a stereo display, and a left-viewpoint image and a right-view image projected on the screen. The vehicle current position display device according to the above-mentioned item 1, further comprising a lenticular lens provided on a front surface of a screen for separating a viewpoint image. 4. A screen for displaying a left-view image and a right-view image by alternately arranging line-by-line in pixel units on a stereo display, and a left-view image and a right screen projected on the screen. The vehicle current position display device according to the above-mentioned item 1, further comprising a parallax barrier provided on a front surface of a screen for separating an image for a viewpoint.