A METHOD FOR ADAPTING TO A DRIVER POSITION AN IMAGE DISPLAYED ON A MONITOR IN A VEHICLE CAB

Abstract

The invention relates to a method for adapting to a driver position an image displayed on a monitor in a cab of the vehicle. The invention also relates to a system for adapting to a driver position an image displayed on a monitor in a cab of the vehicle. The invention further relates to a vehicle comprising such a system.

Claims

1. A method for adapting to a driver position an image displayed on a monitor in a cab of the vehicle, the vehicle comprising a camera assembly comprising at least one camera, for providing a captured image of a field of view located rearwards and along a vehicle side, characterized in that the method comprises: determining the position of the driver on the driver seat using a determining member comprising at least one sensor located in the driver seat; automatically processing the captured image, according to the position of the driver on the driver seat, to display on the monitor the image displayed.

2. The method according to claim 1, wherein the image displayed on a monitor is: either a first image which corresponds to a part of the captured image defined by a first camera field of view, in case the position of the driver is in a first configuration, or a second image which corresponds to a part of the captured image defined by a second camera field of view, distinct from the first field of view, in case the position of the driver is in a second configuration.

3. The method according to claim 1, wherein the at least one sensor is a load sensor.

4. The method according to claim 1, wherein the at least sensor is located in the seat base of the driver seat.

5. The method according to claim 1, wherein the at least sensor is located in the seat backrest of the driver seat.

6. The method according to claim 1, wherein the camera assembly comprises at least one camera arranged on a supporting arm mounted on at least one side of the vehicle and/or at least one camera arranged at the back of the vehicle.

7. The method according to claim 1, wherein the second field of vision comprises a portion of the captured image that is located at any other place other than the first field of vision.

8. The method according to claim 7, wherein the second field of vision further includes the first of vision.

9. A system for adapting to a driver position an image displayed on a monitor in a cab of the vehicle, the vehicle comprising a camera assembly for providing a captured image of an area located rearwards and along a vehicle side, wherein the system comprises: a determining member comprising at least one sensor located in the driver seat, for determining a driver position on the driver seat; a controller capable of receiving a driver position information from the determining member, and of automatically processing the captured image, according to said driver position information, to display on the monitor the image displayed.

10. A vehicle comprising: a cab having front wheels and rear wheels: a camera assembly for providing a captured image of an area located rearwards and along a vehicle side; a monitor located in the cab, for displaying an image based on the captured image; a vehicle internal communication network; wherein the vehicle further comprises a system according to claim 9, wherein the determining member and the controller are linked by the vehicle internal communication network.

11. The vehicle according to claim 11, wherein the camera is fixed relative to the cab, in the use position.

12. The vehicle according to claim 10, wherein the first image corresponds to a first field of vision of the camera and the second image corresponds to a second field of vision of the camera, wherein, as seen along a transverse direction, the lower boundary of the second field of vision is shifted from the lower boundary of the first field of vision by an angle (α) comprised between 5 and 45°.

13. The vehicle according to claim 3, wherein the first field of vision and the second field of vision have substantially the same spanning angle (β), and in that the optical axis of the second field of vision is shifted from the optical axis of the first field of vision by said angle (α).

14. The vehicle according to claim 10, characterized in that the controller is part of a camera monitoring system including the camera assembly.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0040] With reference to the appended drawings, below follows a more detailed description of embodiments of the invention cited as examples.

[0041] In the drawings:

[0042] FIG. 1 is a perspective view of a vehicle according to the invention,

[0043] FIG. 2 is a perspective view forward from the interior of a vehicle, showing a camera assembly and a monitor for displaying an image based on the image captured by the camera assembly;

[0044] FIG. 3 is the position of the driver in the first configuration;

[0045] FIG. 4 is the position of the driver in the second configuration;

[0046] FIG. 5 shows the captured image as well as a first frame corresponding to a first image displayed and a second frame corresponding to a second displayed image;

[0047] FIGS. 6a and 6b respectively show the first image displayed and the second image displayed based on the captured image of FIG. 5;

[0048] FIG. 7 is a perspective view forward the interior of a vehicle, showing two different fields of vision for displaying two different images, according to a embodiment of the invention;

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS OF THE INVENTION

[0049] As illustrated in FIG. 1, the vehicle 1 comprises a cab 2 defining a driver's compartment 3. The cab 2 has side walls 4 each comprising a door 5, a bumper 6 including a windscreen 7. The cab 2 further comprises front wheels 8, and rear wheels 9.

[0050] X is defined as the longitudinal direction of the vehicle 1, Y is defined as the transversal direction and Z is defined as the vertical direction of the vehicle 1.

[0051] The vehicle 1 may comprise an electrical control unit (ECU) 10 for controlling the various electric systems of the vehicle 1.

[0052] The vehicle 1 also comprises a camera assembly 11 mounted on the cab 2, typically above a front portion of the door 5, at least on the side wall 4 of the cab 2 adjacent the driver's seat. Basically, the camera assembly 11 can comprise a supporting arm 12 and a camera 13 arranged on said supporting arm 12, for providing a captured image 60 of an area surrounding the vehicle 1, more specifically an area located rearwards and along a vehicle side. The supporting arm 12 can be fixedly mounted on the cab 2, and can be equipped with a mechanism (not shown) allowing the camera assembly 11 to be: [0053] either in a parking position, when not in use (typically when the vehicle 1 is stopped), in which the camera assembly 11 is folded against the cab side wall 4 to prevent damages; [0054] or in a use position, in which the camera assembly 11 is protruding from the cab side wall 4, to allow the camera 13 to capture images (FIGS. 1 and 2).

[0055] Such a camera assembly 11 can typically be part of a so-called camera monitoring system (CMS) 20 which further includes a monitor 21 inside the driver's compartment 3 for displaying an image based on the captured image provided by the camera 13. Thus, the vehicle 1 according to the invention can be devoid of side exterior mirrors, and possibly also devoid of an interior mirror. The camera monitoring system 20 also includes a controller 22. The controller 22 can be connected to the ECU 10.

[0056] The vehicle 1 also can also comprise a vehicle CAN bus 23. This network 23 includes electrical wiring 24 of the vehicle 1 configured to establish electric connection and communication between the cab 2, the driver seat 20 and various vehicle components. The wiring 24 can typically be linked to the ECU 10.

[0057] According to the invention, the vehicle 1 comprises a system 25 for adapting an image displayed on the monitor 21, based on the captured image 50, to a driver configuration.

[0058] The system 25 comprises a determining member for determining the driver position. As shown in FIG. 3, the position of the driver is in a first configuration, i.e. the initial position of the driver on the seat 30. The determining system can comprise four pressure sensors 31 such as deformation gauge to determine a first position of the driver on the driver seat.

[0059] FIG. 4 shows the position of the driver is in a second configuration, i.e. any other position different from the first configuration. In this example, the driver is leaning forward to look at the dead angle as if the driver would do with an exterior rear mirror. One understand that by changing position form the first position to the second position, the driver weight distribution on the seat is altered. The change in the weight distribution is detected by the sensor 31. Said sensors 31 are linked to the controller 22 via the vehicle internal communication network 23 (more generally via the bundle 24 of cables). The ECU 10 can possibly be arranged between the sensor(s) 31 and the controller 22, as shown in FIG. 2, or otherwise functionally connected to both the sensor 31 and the controller 22.

[0060] The controller 22, which is part of the system 25, is capable of receiving the driver configuration information from the determining member, here the sensor(s) 31. Said information provided by the sensor(s) 31 is either “the driver is in the initial position”, i.e. the driver position is in the first configuration, or “the driver has changed its position”, i.e. the driver position is in the second configuration.

[0061] According to the driver configuration determined by the sensor(s) 31 and the corresponding information provided to the controller 22, the controller 22 automatically processes the captured image 50, to display on the monitor 21 a displayed image.

[0062] The image displayed can be: [0063] either a first image 51 which corresponds to a part of the captured image 50 defined by a first field of view 61, in case the position of the driver is in a first configuration, i.e. an initial position of the driver on the seat, [0064] or a second image 52 which corresponds to a part of the captured image 50 defined by a second field of view 62, distinct from the first field of view 61, in case the position of the driver is in a second configuration, i.e. any driver position different from the initial position.

[0065] Depending on the driver position, the areas of the vehicle 1 that should be visible for the driver, for driving safely and for avoiding damages to the vehicle 1 or surrounding structures, can vary.

[0066] For that purpose, and because the camera 11 is preferably fixed relative to the cab 2, in the use position, the first image 51 displayed on the monitor 21 corresponds to a first field of vision 61 of the camera 13 as illustrated in FIGS. 5 and 6a in solid lines, while the second image 52 displayed on the monitor 21 corresponds to a second field of vision 62 of the camera 13 as illustrated in FIGS. 5 and 6b in dotted lines.

[0067] In practice, the camera 13 has one real and unique field of vision that includes at least the first field of vision 61 and the second field of vision 62 which are theoretically defined as follows. The first field of vision 61 would be the field of vision of a virtual camera which would provide a captured image that would be identical to the first image displayed 51, without image processing for altering the geometrical parameters (size, position, etc.) of the image. Similarly, the second field of vision 62 would be the field of vision of a virtual camera which would provide a captured image that would be identical to the second image displayed 52, without image processing for altering the geometrical parameters (size, position, etc.) of the image.

[0068] When seen along a transverse direction Y towards the vehicle 1, as in FIG. 7, the first field of vision 61 has an optical axis A71, a lower boundary 73 and an upper boundary 74. Similarly, the second field of vision 62 has an optical axis A72, a lower boundary 75 and an upper boundary 76.

[0069] So that the first image 51 can show an area on the right and the second image 52 can show an area on the left, the lower boundary 75 of the second field of vision 62 can be shifted from the lower boundary 73 of the first field of vision 61 by an angle α. This angle α can be comprised between 5 and 45°.

[0070] As a result, as seen in FIG. 5, the second field of vision 62—which defines the second image 52—comprises a portion 63 of the captured image 50 that is located on the left side of the first field of vision 61—which defines the first image 51.

[0071] According to an embodiment, illustrated in FIGS. 5, 6a, 6b and 7, the first and second fields of vision 61, 62 have substantially the same spanning angle β, and the optical axis A72 of the second field of vision 62 is shifted from the optical axis A71 that of the first field of vision 61 by angle α. In other words, the upper boundary 76 of the second field of vision 62 is also shifted from the upper boundary 74 of the first field of vision 61 by angle α.

[0072] As shown in FIGS. 5, 6a and 6b, this results in the second field of vision 62 being shifted relative to the first field of vision 61.

[0073] According to another embodiment (not illustrated), the first and second fields of vision 61, 62 have substantially the same optical axis, for example A71. Furthermore, the upper boundary 76 of the second field of vision 62 is upwardly offset from the upper boundary 74 of the first field of vision 61 by an angle α′. Angle α′ can be comprised between 5 and 45°. It can be identical to angle α.

[0074] This results in the field of vision 62 including the whole first field of vision 61, as well as the above mentioned portion of the captured image 50 that is located below the first field of vision 61, and a portion of the captured image 50 that is located above the first field of vision 61. The second field of vision 62 may also comprise side portions outside and on each side of the first field of vision 61. In other words, the second image 52 is a zoom-out of the first image 51.

[0075] It is to be understood that the present invention is not limited to the embodiments described above and illustrated in the drawings; rather, the skilled person will recognize that many changes and modifications may be made within the scope of the appended claims.