METHOD AND APPARATUS FOR OPERATING A VIDEO-BASED DRIVER ASSISTANCE SYSTEM IN A VEHICLE

• US 20110304734A1
• Filed: 01/28/2010
• Published: 12/15/2011
• Est. Priority Date: 02/06/2009
• Status: Abandoned Application

• Current Assignee: ADC GmbH (TE Connectivity Ltd. (United Kingdom))
• Original Assignee: ADC GmbH (TE Connectivity Ltd. (United Kingdom))
• Inventors: Walter, Michael
• Application Number:
  US13/146,987
• Publication Number:
  US 20110304734A1
• Time in Patent Office: Days
• US Class Current: 348/148
• CPC Class Codes: B60W 2050/0031 Mathematical model of the vehicle
• CPC Class Codes: B60W 40/10 related to vehicle motion
• CPC Class Codes: G06T 1/00 General purpose image data processing

Abstract

Disclosed herein is a method for operating a video-based driver assistance system in a vehicle (F), wherein, by using image data recorded by an imaging unit and processed by an image processing unit, a vehicle environment and/or at least one object (O) in the vehicle environment and/or status data are determined. In the determination of the vehicle environment, of the object (O) in the vehicle environment and/or of the status data, a pixel offset (P) present in the image data of consecutive images is determined and compensated for. Also disclosed is an apparatus for operating a video-based driver assistance system in a vehicle (F).

Claims

1-13. -13. (canceled)

14. A method for operating a video-based driver assistance system in a vehicle (F), said method comprising the steps of:

determining a vehicle environment and/or at least one object (O) in the vehicle environment and/or status data by means of image data recorded by an imaging unit and processed by an image processing unit; and

determining and compensating for a pixel offset (P) present in the image data of consecutive images in determining the vehicle environment, the object (O) in the vehicle environment and/or the status data.

15. A method according to claim 14 further comprising the step of determining a pixel offset (P), resulting from a change of a pitch angle, yaw angle and/or rolling angle.

16. A method according to claim 15 further comprising the steps of

determining a change of position of at least one pixel in the consecutive images from the change of the pitch angle, yaw angle and/or rolling angle;

and

determining an expected pixel offset (P) on the basis of the determined change of position of the pixel(s).

17. A method according to claim 15 further comprising the step of determining the change of the pitch angle, yaw angle and/or rolling angle from detected rotation rates (R) during recording of two consecutive images.

18. A method according to claim 17 further comprising the step of determining the rotation rates (R) by means of at least one rotation rate sensor during the recording of at least two consecutive images.

19. A method according to claim 18 further comprising the step of determining a longitudinal acceleration (L) and/or transverse acceleration (Q) of the vehicle (F) during the recording of at least two consecutive images by means of at least one acceleration sensor.

20. A method according to claim 19 further comprising the step of determining the rotation rates (R) from the detected longitudinal acceleration (L) and/or transverse acceleration (Q) on the basis of a vehicle model.

21. A method according to claim 18 further comprising the step of determining a deviation of the determined rotation rates (R) from a nominal value by means of a filtration in an event that the vehicle (F) is moving.

22. An apparatus for operating a video-based driver assistance system in a vehicle (F), said apparatus comprising:

an imaging unit for recording image data; and

an image processing unit for processing the image data and a control unit for determining a vehicle environment and/or at least one object (O) in the vehicle environment and/or status data from the image data,

wherein the control unit is connected with at least one rotation rate sensor and/or at least one acceleration sensor in such a manner that in the determination of the vehicle environment, of the object (O) in the vehicle environment and/or of the status data, a pixel offset (P) present in the image data of consecutive images can be determined and compensated for on the basis of detected rotation rates (R).

23. An apparatus according to claim 22, wherein the at least one rotation rate sensor and/or the at least one acceleration sensor is/are arranged directly at or in the imaging unit.

24. An apparatus according to claim 22, wherein the rotation rate sensor is a sensor with a three-dimensional detection area, by means of which a pitch angle, yaw angle and/or rolling angle of the vehicle (F) can be detected.

25. An apparatus according to claim 22 further comprising two acceleration sensors arranged at right angles to each other directly at or in the imaging unit,

wherein, by means of one of the acceleration sensors, a longitudinal acceleration (L) can be detected, and

wherein, by means of the other acceleration sensor, a transverse acceleration (Q) of the vehicle (F) can be detected.

26. An apparatus according to claim 25,

wherein a vehicle model is stored in a storage unit, and

wherein rotation rates (R) of the vehicle (F) can be determined on the basis of the vehicle model from the longitudinal acceleration (L) and/or transverse acceleration (Q).