JP3448692B2 - In-car stereo image display device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted stereo image display device for displaying information outside a vehicle, guidance information for traveling a vehicle, etc. in a three-dimensional stereo image.

[0002]

2. Description of the Related Art Conventionally, an image of a front intersection is displayed on a screen in order to provide a guidance display for driving a vehicle.
When the guidance for turning left or right at the intersection is indicated by an arrow, the image is displayed in perspective in order to give a stereoscopic effect to the display content on the screen,
A pseudo three-dimensional image is displayed (see Japanese Patent Laid-Open No. 63-211100).

[0003]

The problem to be solved is to display the image projected on the screen by the perspective method to give a stereoscopic effect. For example, when a front image of the vehicle is displayed, That is, it is not possible to accurately grasp the sense of distance in the front area and to display the guidance guidance at the intersection or the like with a sufficient three-dimensional effect.

[0004]

According to the present invention, a driver and an assistant of a vehicle do not use a two-dimensional image to display a pseudo three-dimensional image, but rely on the left and right eyes of the driver.
So that you can observe stereo images by looking at the left and right viewpoint images, you can take images with a video camera,
Graphically obtained driver's seat and passenger's seat
The images for the left and right viewpoints are alternately arranged in the image synthesizer with line-shaped pixel rows, and the synthesized images are displayed on the stereo display for the driver's seat and the assistant.
The left and right viewpoint images for the driver's seat and the passenger's seat for the left and right viewpoints are displayed on the display after being separately displayed so that they can be observed separately. It is reflected by and is reflected on the windshield of the vehicle.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the basic structure of a vehicle-mounted stereo image display device according to the present invention. The image data LID and RID of a left-viewpoint image and a right-viewpoint image based on a pixel configuration are shown.
, And an image synthesizer 1 for synthesizing the images by alternately arranging them with line-shaped pixel rows in the same direction, and the synthesized image can be separated into left and right viewpoint images for observation. The stereo display 2 for display and the reflector 3 for reflecting the stereo image displayed on the display 2 in the direction of the eye position O of the occupant in the vehicle interior are configured.

In the structure shown in FIG. 2, a lens system 4 for magnifying a stereo image displayed on the display 2 with a predetermined magnification is provided between the stereo display 2 and the reflector 3. There is.

The lens system 4 may be provided with a zoom function so that the zoom adjustment can be performed manually or according to an operation command under the control of a microcomputer (not shown).

As the stereo display 2, here, as shown in FIGS. 3 and 4, the liquid crystal display 2 is used.
The lenticular lens 22 in which the semicylindrical lenses are arranged on the front surface of the lens 1 is used.

In the liquid crystal display 21, the linear pixel rows LB1 and L in the left-viewpoint image are provided at the focal positions of the respective semicylindrical lenses in the lenticular lens 22.
The composite image is displayed in a state where B2, LB3, ... And the line-shaped pixel rows RB1, RB2, RB3 ,.

However, by viewing the display surface from a predetermined position, the left eye E (L) has line-shaped pixel rows LB1, LB2, LB3 in the left-viewpoint image.
... can be seen, and the right eye E (R) has line-shaped pixel rows RB1, RB2, RB3 in the right-viewpoint image.
You can only see ..., which allows you to see the stereo image.

In such a vehicle-mounted stereo image display device
In particular, in the present invention, as shown in FIGS. 5 and 6, on the liquid crystal display 21, for example, the line-shaped pixel row LB (a) in the left-view image for the driver's seat and the line in the right-view image are displayed. -Shaped pixel row RB (a), a line-shaped pixel row LB (b) in the left-view image for the passenger seat, and a line-shaped pixel row RB (b) in the right-view image.
So that the composite image is displayed while and are lined up alternately.
And, so that it is possible to observe a stereo image, respectively, by human B sitting on the person A and the passenger's seat sitting in the driver's seat.

In this case, if the image for the driver's seat and the image for the passenger's seat are combined using the same image, the person A sitting in the driver's seat and the person B sitting in the passenger's seat can The same stereo image can be observed respectively. In addition, if the images for the driver's seat and the passenger's seat are combined using different images, different stereo images are obtained depending on the person A sitting in the driver's seat and the person B sitting in the passenger's seat. Can be observed.

Further, by making it possible to observe the same stereo image from a plurality of different directions, for example, even if the head of a person A sitting in the driver's seat moves and the position at which the display surface is viewed deviates. , You can be able to see its stereo image.

As the stereo display 2,
As shown in FIG. 7, on the front surface of the liquid crystal display 21, a parallax barrier 23 having slits having a width corresponding to each line-shaped pixel row in the composite image displayed on the display surface is provided. Then, a stereoscopic image can be observed by separating the left-viewpoint image and the right-viewpoint image from the composite image displayed on the liquid crystal display 21 through the slit.

The parallax barrier 23 is composed of a liquid crystal panel on which a stripe image serving as a barrier is displayed so that a slit is formed between the barriers.

As images for the left and right viewpoints, a vehicle-mounted stereo twin-lens video camera 6 (or two units arranged side by side according to the left and right eyes of a human being) driven under the control of the microcomputer 5 is used. An image obtained by capturing the outside of the vehicle with a video camera) is used.

The data of each image for the left and right viewpoints captured by the video camera 6 is converted into the image processing device 7.
Are subjected to processing such as contrast enhancement and edge enhancement, and the image-processed left and right viewpoint image data LID and RID are provided from the microcomputer 5 to the image synthesizer 1. To be

Further, each image data LI for left and right viewpoints
As D and RID, image data of computer graphics stored in an image memory in the microcomputer 5 is used.

The microcomputer 5 selectively outputs image data LID, RID of either an image picked up by the video camera 6 or an image by computer graphics according to an operation command from the operation input section.

The reflector 3 can reflect the stereo image displayed on the stereo display 2 in the direction of the eyes of the person A sitting in the driver's seat and project it on the windshield of the vehicle. Thus, it is installed between the person A sitting in the driver's seat and the windshield 8 (see FIGS. 8 and 9).

Specifically, the reflection plate 3 is attached to the surface of the windshield 8, or when the windshield 8 is a laminated glass, it is provided in the laminated portion in the windshield.

The reflector 3 is designed so as not to obstruct the occupant's view, especially when the vehicle is traveling.
Laminating an optical interference film on a half mirror or a transparent substrate (a windshield may be used) which reflects only light of a specific color system from the stereo display 2 surface and transmits other light. An optical interference mirror or the like having optical transparency is used.

Alternatively, the light-reflecting plate 3 may be provided at a position where the driver's view is not obstructed when the vehicle travels.

FIG. 9 shows an example of the installation state of the stereo display 2 and the reflector 3 in the vehicle. Here, the stereo display 2 is stored in the dashboard portion 9 such that its display surface is exposed upwards. Then, the stereo image I displayed on the display surface is reflected by the reflector plate 3 in the direction of the driver's eye position, whereby the driver A is positioned at the position on the windshield with the reflector plate 3 symmetrical. Stereo image I
Can be seen.

In such a structure, for example, a video camera 6 for night vision is used to image the front of the vehicle, and a stereo image obtained thereby is viewed from the driver's actual scene. If the image is displayed on the windshield side so as to overlap with, it becomes possible to provide the driver with information on the forward field of view at night or in a tunnel in accordance with an actual scene.

At this time, the driver can stereoscopically view the image of the front of the vehicle projected on the windshield in the same state as when looking at the actual scene. For example, as shown in FIG. It is possible to properly understand the sense of distance to an obstacle (person), and to recognize a front crossing or a slope with a sufficient three-dimensional effect.

In this case, if the front captured image is displayed as a mere two-dimensional image on the windshield, the image and the front scene actually seen by the driver do not match, and the distance is particularly long. I feel a sense of discomfort,
On the contrary, the visibility in the front will be reduced.

In addition, a microcomputer 5 is used to measure the position of the own vehicle by, for example, GPS to obtain the current position on the map and display the position of the own vehicle on the map. When used as a main computer, if a stereo image of the vehicle guidance using the computer graphics is projected on the windshield so as to overlap with the actual scene in front of the driver, the actual scene in front of the vehicle will be displayed. It will be possible to optimally guide the vehicle guidance according to the above.

For example, when the current position of the vehicle is approaching a required intersection on the planned traveling route on the map,
In a vehicle-mounted navigation device configured to display preset directions such as right and left turns at the intersection with arrows, as shown in FIG. 10, the arrows indicating the right and left turns are used as a stereo image to drive. From the perspective of a person, it can be projected on the windshield so as to overlap with the actual scene of the front intersection.

Also, during a break in driving the vehicle, it is possible to display a predetermined stereo image according to the video software for entertainment or the like set in the microcomputer 5 on the windshield to enjoy the image.

[0031]

As described above, according to the vehicle-mounted stereo image display device of the present invention, the driver and the assistant image the front area of the vehicle with the video camera or the computer.
Can be respectively elevational <br/> a visual windshield side and image of guidance of the vehicle by the Graphics as a three-dimensional stereo image, three-dimensional effect in line with the actual scene viewed by the occupant through the windshield and the distance There is an advantage that the image can be recognized with a feeling, and the outside information and the guidance information can be accurately given to each of the driver and the assistant .

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration example of a vehicle-mounted stereo image display device according to the present invention.

FIG. 2 is a block diagram showing another basic configuration example of the vehicle-mounted stereo image display device according to the present invention.

FIG. 3 is a perspective view showing a basic configuration of a stereoscopic display using a lenticular lens by a twin-lens system.

FIG. 4 is a diagram showing a basic configuration of a stereo display using a lenticular lens by a twin-lens system.

FIG. 5 is a perspective view showing a basic structure of a stereoscopic display using a lenticular lens, which is of a compound-eye type.

FIG. 6 is a view showing a basic configuration of a stereoscopic display using a lenticular lens, which is of a compound-eye type.

FIG. 7 is a diagram showing a basic configuration of a stereoscopic display using a parallax barrier by a compound eye system.

FIG. 8 is a diagram showing an example of a state in which a stereo image is projected on the windshield of a vehicle.

FIG. 9 is a diagram showing an example of an installed state of a stereo display and a reflector in a vehicle.

FIG. 10 is a diagram showing another example of a state in which a stereo image is projected on the windshield of the vehicle.

[Explanation of symbols]

1 Image synthesizer 2 stereo display 3 reflector 4 lens system 5 Microcomputer 6 video cameras 7 Image processing device 8 windshield 21 LCD display 22 lenticular lens 23 Parallax Barrier

Continuation of the front page (56) References JP-A-5-168048 (JP, A) JP-A-62-57392 (JP, A) Actually developed 4-101743 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) B60R 1/00 G08G 1/09 G09F 9/00

Claims (6)

(57) [Claims] 1. Image generation for generating images for left and right viewpoints
Means and images for left and right viewpoint for driver's seat and for passenger seat
Left, takes in the image for the right viewpoint, and an image combiner for combining sequentially alternately arranged each with a linear pixel column, the composite image for the driver's seat and the passenger seat respectively
A stereo display for displaying the left, and separated into images for the right perspective, left to be displayed on its display, by reflecting the image for the right viewpoint is composed of a reflector which Projects the windshield side of the vehicle , The left and right viewpoint images projected on the windshield of the driver seat and
Automotive stereo image display apparatus being characterized in that to be able to observe a stereoscopic image respectively by looking from the passenger's seat. 2. The vehicle-mounted stereo image display device according to claim 1, wherein each of the images for the left and right viewpoints is an image obtained by capturing the outside of the vehicle with a video camera. 3. The vehicle-mounted stereo image display device according to claim 1, wherein each of the images for the left and right viewpoints is an image by computer graphics. 4. The stereo display comprises a screen for displaying a composite image and a lenticular lens for separating left and right viewpoint images provided on the front surface of the screen. In-vehicle stereo image display device. 5. The stereo display comprises a screen for displaying a composite image and a parallax barrier for separating left and right viewpoint images provided on the front surface of the screen. The vehicle-mounted stereo image display device according to the description. 6. The vehicle-mounted stereo image display device according to claim 1, wherein a light-transmissive reflector is provided on a windshield portion of the vehicle.