DE102019219244B3 - Method for displaying parts of an image on a screen arrangement, computer program product, motor vehicle display device and motor vehicle - Google Patents

Abstract

A method is described for displaying parts of an image on a screen arrangement with at least two screens which are arranged next to one another, a virtual distance of the image being determined perpendicular to a display plane of one of the screens, with a position of the head of a viewer being detected by means of a position detection device is, wherein a distance of the head to the display plane is determined from the position of the head, with the at least two screens in each case image sections are displayed, which are determined on the basis of the virtual distance and the position of the head and a respective size of the screens, wherein a change in the position of the head relative to the position detection device is detected, the image details being changed relative to the change in the position of the head. A distance between two adjacent screens is projected onto the image, the image area covered by the distance being divided and a part being displayed on one of the adjacent screens. A computer program product, a motor vehicle display device and a motor vehicle are also described.

Description

A method for displaying parts of an image on a screen arrangement, a computer program product, a motor vehicle display device and a motor vehicle are described here.

Methods for displaying parts of an image on a screen arrangement, computer program product, motor vehicle display devices and motor vehicles of the type mentioned at the beginning are known in the prior art.

The number of camera assemblies and screen assemblies used in a motor vehicle has increased in the past. Due to the conditions on a dashboard, it is common to provide several smaller display devices (screens) arranged next to one another instead of one large display device. This is used, among other things, to meet different configuration requirements of buyers. In the meantime, a screen is often installed in a center console, which is used, for example, to display multimedia or navigation information, which is often referred to as MMI = human-machine interface or infotainment system. If a reversing camera is installed, information from the reversing camera can also be displayed here. If larger image areas, for example all-round visual images that are synthetically composed of several camera recordings, are to be displayed, this is difficult with only one of the display devices due to the resulting image format.

Furthermore, so-called virtual cockpits are being used more and more frequently, in which an instrument panel is replaced by a screen that can be used in a variety of ways. In order to give customers the greatest possible flexibility while keeping costs low, it makes more sense to use smaller screens, for example one in the center console and one on the instrument console.

Edges between the screens usually do not interfere, since different information is usually displayed on the screens.

From the DE 10 2016 108 885 A1 A method is known for the contactless shifting of visual information between spatially decoupled display areas, in particular between a first vehicle-internal display area and a spatially decoupled second display area. For the contactless shifting of visual information, at least one viewing direction and a hand movement and / or a head movement of a user is recorded, with a hand movement and / or head movement combined with a viewing direction sending a control command for moving visual information displayed in a first vehicle-internal display area to the at least one second, spatially decoupled from the first vehicle-internal display area further display area is assigned, the control command is triggered with a pivoting movement of the hand and / or head of the user, with the completion of the pivoting movement, the visual information is displayed in the further display area. The aim of this known method is to move a complete piece of information, for example a button, between two spatially decoupled display areas.

With the method it cannot be achieved that screen arrangements arranged spatially adjacent to one another can be operated.

From US 2011/0080478 A1 a method and a device for displaying divided image information on two screens which are arranged side by side are known. The position of a person's face can be recorded with a camera, so that the information displayed on the two screens can be changed as a function of the position of the face.

Furthermore, from the US 2019/0 012 989 A1 , the US 2017/0 160 550 A1 as well as from the DE 10 2014 019 122 A1 Methods and devices for displaying image information on two screens are known.

Thus, the task arises of developing methods for displaying parts of an image on a screen arrangement, computer program products, motor vehicle display devices and motor vehicles of the type mentioned at the outset in such a way that better display of images on screen arrangements is possible.

The object is achieved by a method for displaying parts of an image on a screen arrangement according to claim 1, a computer program product according to the independent claim 7, a motor vehicle display device according to the independent claim 8 and a motor vehicle according to the independent claim 11 of the dependent claims.

A method for displaying parts of an image on a screen arrangement with at least two screens, which are arranged next to one another, is described below. A virtual distance of the image perpendicular to a display plane of one of the screens is determined, a position of a head of a viewer being detected by means of a position detection device, a distance of the head to the display plane being determined from the position of the head, with the at least two screens each image sections are displayed, which are determined on the basis of the virtual distance and the position of the head as well as a respective size of the screen, a change in the position of the head is detected relative to the position detection device, the image sections relative to the change in the position of the Head can be changed. A distance between two adjacent screens is projected onto the image, the image area covered by the distance being divided and a part being displayed on one of the adjacent screens.

The image can be a static or a moving image (video).

Because a virtual distance of the image to the display plane on the screens is determined and the position of the head and a relative change in the position of the head to the position detection device is detected, a display on the at least two screens can be achieved that essentially includes a glance simulated by two or more adjacent windows. When the viewer moves his head, the image details of the image to be displayed can be moved along with it according to the method described above in such a way that the viewer has the feeling of looking out of several neighboring windows. In this way, a particularly realistic representation can be achieved on the at least two screens. Due to the fact that screen arrangements usually have a frame and two screens are often not arranged directly adjacent without spatial separation, but usually have a certain gap between them, the method can also be used to open the image area covered by this gap by pivoting the Head can be made visible or represented.

The mapping of the distance is also done arithmetically. In this way, a correct and natural-looking reproduction of sections of the image on the screen can be achieved, which is reminiscent of neighboring windows with an intervening frame.

In a first further refinement, provision can be made for a center to be defined relative to the position of the head, the image details being determined in each case by mapping the respective screen areas from the center onto the image.

The mapping is done arithmetically. The center can be, for example, an area on the forehead of the viewer or a center of the head. By defining such a center, a sufficiently good correlation is achieved between the position of the head and the position of the viewer's eyes, so that movements of the viewer's head can be correctly taken into account when displaying the image details.

Because the respective screen areas are mapped onto the image, the window effect described above is achieved. The closer the viewer is to the screens, the more of the image is displayed, as this increases the visible viewing angle (see for explanation z .B. 3A) . The viewing angle is defined geometrically by the relationship between the distance from the center and the width and height of the screen in question.

In a further refinement, it can be provided that a viewing direction of the viewer is determined by means of the position detection device, a viewed image segment being determined on the basis of the viewing direction.

With the help of the analysis of the viewing direction of the viewer, situations in which the viewer is really looking at the screen arrangement can be distinguished from those situations in which the viewer is looking in a different direction. In this case it is not necessary to change the image details.

In a further refinement, provision can be made for a distance between two adjacent screens to be projected onto the image, the image area covered by the distance being divided and a part being displayed on one of the adjacent screens.

In this way, the parts of the picture that are covered by the distance are made visible, in which the respective parts are closed to the two adjacent screens.

In a further refinement, it can be provided that the displayed image details are only changed when the head moves through more than one tolerance range.

This can prevent the image from becoming unsteady. In addition, a more fluid and harmonious display can be achieved.

In a further refinement, it can be provided that the image is one of represents at least one external camera of a motor vehicle recorded image.

If more than one external camera is provided, a synthesized image can be generated from the data from the various cameras in a further refinement.

A first independent subject relates to a device for displaying parts of an image on a screen arrangement with at least two screens which are arranged adjacent to one another, with means for determining a virtual distance of the image perpendicular to a display plane of one of the screens being provided, with a position detection device for Detection of a position of a head of a viewer are provided, wherein means are provided to determine a distance of the head to the display plane from the position of the head, wherein the at least two screens are each set up to display image sections based on the virtual distance and the Position of the head and a respective size of the screens are determined, wherein the position detection device is set up to detect a change in the position of the head relative to the position detection device, wherein the device is set up to change image sections relative to the change in the position of the head.

In a first further refinement, provision can be made for means to be provided for defining a center relative to the position of the head, the image sections being determined in each case by mapping the respective screen areas from the center onto the image.

In a further refinement, the position detection device can be set up to determine a viewing direction of the viewer, means for determining a viewed image segment based on the viewing direction being provided, the virtual distance of the image segment being used.

In a further refinement, provision can be made for means to be provided for projecting a distance between two adjacent screens onto the image and not displaying it.

In a further refinement, it can be provided that means are provided for projecting a distance between two adjacent screens onto the image, with means for dividing the image area covered by the distance, one part being displayed on one of the adjacent screens .

In a further refinement, provision can be made for means to be provided which are set up to change the displayed image details only when the head moves by more than one tolerance range.

In a further refinement, at least one external camera of a motor vehicle can be provided which records the image to be displayed.

The picture can also be a video.

Another independent subject matter relates to a computer program product with a computer-readable storage medium on which instructions are embedded which, when executed by at least one processing unit, have the effect that the at least processing unit is set up to carry out the method of the type described above.

The method can be carried out on one or more processing units, so that certain method steps are carried out on one processing unit and other method steps are carried out on at least one further processing unit, with calculated data being able to be transmitted between the processing units if necessary.

Another independent subject matter relates to a motor vehicle display device with at least two screens which are arranged next to one another, a position detection device for detecting a position of a head of a viewer and a control device which is connected to the at least two screens and the at least one position detection device, the controller having a Computing unit and a computer program product of the type described above.

In a first further refinement, it can be provided that at least one external camera is also provided.

In a further refinement, it can be provided that at least one external camera is oriented against the direction of travel of the motor vehicle.

This allows the screens to be used for reversing.

Another independent subject matter relates to a motor vehicle with a motor vehicle display device of the type described above.

• 1 eine Draufsicht auf ein Kraftfahrzeug mit einer Kraftfahrzeuganzeigevorrichtung;
• 2 A, 2B eine Kraftfahrzeuganzeigevorrichtung mit zwei Bildschirmen und einem Kopf eines Betrachters;
• 3A, 3B Draufsichten auf die Kraftfahrzeuganzeigevorrichtung mit einem Bild und einem Betrachter in zwei verschiedenen Positionen;
• 4 ein beispielhaftes Bild, sowie
• 5A, 5B Darstellungen des Bildes aus 4 auf der Anzeigevorrichtung aus 1 bei zwei unterschiedlichen Kopfpositionen.

Further features and details emerge from the following description, in which at least one exemplary embodiment is described in detail - possibly with reference to the drawing. Described and / or graphically represented features form the subject matter individually or in any meaningful combination, possibly also independently of the claims, and can in particular also be the subject matter of one or more separate applications. Identical, similar and / or functionally identical parts are provided with the same reference symbols. They show schematically:

• 1 a plan view of a motor vehicle with a motor vehicle display device;
• 2 A , 2 B an automobile display device having two screens and a head of a viewer;
• 3A , 3B Top views of the automobile display device with an image and a viewer in two different positions;
• 4th an exemplary picture, as well
• 5A , 5B Representations of the image 4th on the display 1 with two different head positions.

Identical or identically acting components are provided with the same reference symbols in the following exemplary embodiments for better readability.

1 shows a plan view of a motor vehicle 2 .

In an interior of the motor vehicle 2 is a screen arrangement 4th consisting of a first screen 6th , a second screen 8th and a third screen 10 on a dashboard 12th arranged. A driver monitoring camera 14th is aligned with a driver's seat in order to receive a head of the driver and to detect the relative position of the head in space.

There is also a rear view camera 15th provided, its image to a controller 16 is transmitted. The image of the rear view camera 15th supposed to be on the screen arrangement 4th being represented.

First screen 6th , second screen 8th and third screen 10 are together with the driver monitoring camera 14th also with the control 16 connected. The control 16 has an arithmetic unit 18th and a memory 20th on. In the memory 20th is a computer program product that when stored by the computing unit 18th is performed, perform the procedure described below.

2 A Figure 11 shows a perspective view of a screen arrangement with two screens 6th , 8th on which an object in two parts, 22.1 , 22.2 is shown.

A head 24 of a viewer is at a given distance in front of the screen arrangement 4th . The two screens 6th , 8th each represent parts 22.1 , 22.2 of the object in question.

The head 24 becomes a center Z1 assigned.

As in 2 B shown, the viewer has his head 24 moves so that the center moves from Z1 to a new center Z2 moved. This movement of the head 24 relative to the driver monitoring camera 14th leads to the fact that the representations of the object correspond to the in connection with 3A , 3B The procedure described in more detail can also be changed so that on the screens 6th , 8th new representations, 22.1 ' , 22.2 ' being represented.

3A FIG. 13 shows a plan view of one of the FIGS 2A , 2 B situation described comparable situation.

A picture 26th that to share on the screens 6th , 8th to be represented is at a virtual distance d1 from the screens 6th , 8th - based on the head 24 the viewer facing side - shown.

The head 24 defines the position of the center Z1 , the present a distance of d2 to the screens 6th , 8th having. By the distance d2 and by the size of the screens 6th , 8th each becomes a field of vision 28 , 30th defined by the rays shown here from the center Z1 over the edges of the screens 6th , 8th on the picture 26th is shown.

Changes as in 3B shown the position of the head 24 , shifts the center of at the same time Z1 to Z2 . This will make the images of the screens 6th , 8th on the picture 26th moved because of the new center Z2 the rays over the edges of the screens 6th , 8th have a different direction. This creates new perspectives 28 ' , 30 ' Are defined.

The change in position is from Z1 to Z2 more than a defined tolerance range, other image sections of the image can 26th on the screens 6th , 8th being represented.

Between the screens 6th , 8th is a distance 32 present, which leads to an invisible area of the image 26th leads (window frame effect). By shifting the center of Z1 to Z2 there is also a shift in the projection of the distance 32 on the picture 26th so that other, previously covered areas are displayed and other, previously visible areas are no longer displayed.

4th shows an exemplary image taken by means of the reversing camera 15th has been recorded.

5A , 5B show how the picture 26th into several image segments, 26.1 , 26.2 is divided so that the desired window effect is achieved. The representation is according to 5A according to the first transverse position Y1 Of the head 24 added, the representation after 5B from the second transverse position Y2 . By moving your head 24 have the corresponding projections of the screens 6th , 8th , 10 on the picture 26th changed so that the representations have also changed accordingly.

Although the subject matter has been illustrated and explained in more detail by means of exemplary embodiments, the invention is not restricted by the disclosed examples and other variations can be derived therefrom by the person skilled in the art. It is therefore clear that there is a multitude of possible variations. It is also clear that embodiments cited by way of example only represent examples which are not to be interpreted in any way as a limitation, for example, of the scope of protection, the possible applications or the configuration of the invention. Rather, the preceding description and the description of the figures enable the person skilled in the art to specifically implement the exemplary embodiments, whereby the person skilled in the art, knowing the disclosed inventive concept, can make various changes, for example with regard to the function or the arrangement of individual elements mentioned in an exemplary embodiment, without the To leave the scope of protection that is defined by the claims and their legal equivalents, such as a more detailed explanation in the description.

List of reference symbols

2

Motor vehicle

4th

Screen layout

6th

first screen

8th

second screen

10

third screen

12th

dashboard

14th

Driver surveillance camera

15th

backup camera

16

control

18th

Arithmetic unit

20th

Storage

22.1, 22.2

Representation of an object

22.1 ', 22.2'

Representation of an object

24

head

26th

picture

26.1, 26.2, 26.3

Image detail

26.1 ', 26.2,' 26.3 '

Image detail

28, 30

Field of view

28 ', 30'

Field of view

32

distance

d1

Image distance

d2

Distance center to screen

x, y, z

Coordinates

Y1, Y2

transverse position

Z1, Z2

center

Claims (11)

Method for displaying parts of an image (22.1, 22.2, 26) on a screen arrangement (4) with at least two screens (6, 8, 10) which are arranged next to one another, a virtual distance (d1) of the image (22.1, 22.2, 26) is determined perpendicular to a display plane of one of the screens (6, 8, 10), a position (Z1, Z2) of a head (24) of a viewer being detected by means of a position detection device (14), a distance (d2 ) of the head (24) to the display plane is determined from the position of the head (24), with image sections (22.1, 22.2, 22.1 ', 22.2', 26.1, 26.2, 26.3 , 26.1 ', 26.2', 26.3 '), which are determined on the basis of the virtual distance (d1) and the position of the head (24) and a respective size of the screens (6, 8, 10), with a change the position (Z1, Z2) of the head (24) relative to the position detection device ( 14) is recorded, the image details (22.1, 22.2, 22.1 ', 22.2', 26.1, 26.2, 26.3, 26.1 ', 26.2', 26.3 ') relative to the change in position (Z1, Z2) of the head (24) are changed, characterized in that a distance (32) between each two adjacent screens (6, 8, 10) is projected onto the image (22.1, 22.2, 26), the image area covered by the distance (32) being divided and a part being displayed on one of the adjacent screens. Procedure according to Claim 1 , wherein a center (Z1, Z2) is determined relative to the position of the head (24), the image details (22.1, 22.2, 22.1 ', 22.2', 26.1, 26.2, 26.3, 26.1 ', 26.2', 26.3 ') respectively are determined by mapping the respective screen areas from the center (Z1, Z2) based on the image (22.1, 22.2, 26). Procedure according to Claim 1 or 2 , wherein a viewing direction of the viewer is determined by means of the position detection device (14), a viewed image segment being determined on the basis of the viewing direction. Method according to one of the preceding claims, wherein a distance (32) between two adjacent screens (6, 8, 10) is mapped onto the image (22.1, 22.2, 26) and is not shown on the adjacent screens (6, 8, 10) becomes. Method according to one of the preceding claims, wherein the displayed image details (22.1, 22.2, 22.1 ', 22.2', 26.1, 26.2, 26.3, 26.1 ', 26.2', 26.3 ') are only changed if the head (24) changes by more moved as a tolerance range. Method according to one of the preceding claims, wherein the image (22.1, 22.2, 26) represents an image (22.1, 22.2, 26) recorded by at least one external camera (15) of a motor vehicle (2). Computer program product with a computer-readable storage medium (20) on which instructions are embedded which, when executed by at least one computing unit (18), have the effect that the at least one computing unit (18) is set up to implement the method according to one of the preceding To carry out claims. Motor vehicle display device with at least two screens (6, 8, 10) which are arranged next to one another, a position detection device (14) for detecting a position of a head (24) of a viewer and a control device (16) which is connected to the at least two screens (6 , 8, 10) and the at least one position detection device (14), the controller (16) having a computing unit (18) and a computer program product according to Claim 7 having. Motor vehicle display device according to Claim 8 , furthermore at least one external camera (15) being provided. Motor vehicle display device according to Claim 9 , wherein the at least external camera (15) is aligned against the direction of travel of the motor vehicle (2). Motor vehicle with a motor vehicle display device according to one of the Claims 7 to 10 .

Images