APPARATUS AND METHOD FOR CONTROLLING A VEHICLE CAMERA

• US 20120127310A1
• Filed: 10/20/2011
• Published: 05/24/2012
• Est. Priority Date: 11/18/2010
• Status: Abandoned Application

• Current Assignee: SL Corporation
• Original Assignee: SL Corporation
• Inventors: Kim, Dae Hyun
• Application Number:
  US13/277,745
• Publication Number:
  US 20120127310A1
• Time in Patent Office: Days
• US Class Current: 348/148
• CPC Class Codes: B60R 1/00 Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
• CPC Class Codes: B60R 1/24 in front of the vehicle
• CPC Class Codes: B60R 2300/101 using cameras with adjustable capturing direction
• CPC Class Codes: B60R 2300/402 Image calibration
• CPC Class Codes: H04N 23/685 performed by mechanical compensation

Abstract

An apparatus and method for adaptively controlling an angle of a camera when the height of a vehicle is changed are provided. The apparatus for controlling a vehicle camera includes at least one sensor which detects variation in height of the vehicle, a rotational angle calculation unit which calculates a rotational angle of the vehicle to compensate the detected variation in height of the vehicle, and a camera control unit which controls the image pickup angle of the vehicle camera based on the calculated rotational angle.

Claims

1. An apparatus for controlling a vehicle camera to constantly maintain an image pickup angle of the vehicle camera regardless of variation in height of a vehicle, the apparatus comprising:

at least one sensor configured to detect variation in height of the vehicle;

a rotational angle calculation unit configured to calculate a rotational angle of the vehicle to compensate the detected variation in height of the vehicle; and

a camera control unit configured to control the image pickup angle of the vehicle camera based on the calculated rotation angle.

2. The apparatus of claim 1, wherein the at least one sensor comprises a front wheel height sensor which detects a first vehicle height at a position of front wheels of the vehicle, and a rear wheel height sensor which detects a second vehicle height at a position of rear wheels of vehicle.

3. The apparatus of claim 2, wherein when a variation in at least one of the first vehicle height and the second vehicle height is detected, the rotational angle calculation unit computes a rotational angle of the vehicle from a distance between the position of front wheels and the position of rear wheels and an offset determined by combination of the first vehicle height and the second vehicle height, and calculates the rotational angle compensating the computed rotational angle.

4. The apparatus of claim 2, wherein the rotational angle calculation unit is configured to calculate the rotational angle based on a mapping table which is stored in a specific memory and defines a relationship between the first vehicle height, the second vehicle height and the rotational angle.

5. The apparatus of claim 1, further comprising a display unit configured to display an image captured by the vehicle camera.

6. The apparatus of claim 1, wherein the camera control unit controls the image pickup angle only when the rotational angle is equal to or greater than a predetermined threshold value.

7. The apparatus of claim 1, further comprising an electronic control unit (ECU) that is configured to process an image obtained by the camera, analyzes information of a preceding vehicle, and controls an operation of the vehicle based on the analyzed information.

8. An apparatus for controlling a vehicle camera to maintain an image displayed in a vehicle to have a fixed view regardless of variation in height of the vehicle, the apparatus comprising:

at least one sensor configured to detect variation in height of the vehicle;

a rotational angle calculation unit configured to calculate a rotational angle of the vehicle to compensate the detected variation in height of the vehicle;

a camera fixed relatively to the vehicle to capture an image; and

an image processing unit configured to extract a sample image from the captured image based on the calculated rotational angle.

9. The apparatus of claim 8, wherein the image processing unit acquires a vertical shift value to compensate the variation in height of the vehicle based on the calculated rotational angle, and extracts the sample image shifted by the acquired vertical shift value.

10. The apparatus of claim 9, further comprising a memory configured to store a mapping table representing a relationship between the calculated rotational angle and the vertical shift value.

11. The apparatus of claim 9, further comprising a memory configured to store a mapping table representing a relationship between the variation in height of the vehicle and the vertical shift value.

12. A method for controlling a vehicle camera to constantly maintain an image pickup angle of the vehicle camera regardless of variation in height of a vehicle, the method comprising:

detecting by at least one sensor variation in height of the vehicle;

calculating, by a first unit, a rotational angle of the vehicle to compensate the detected variation in height of the vehicle; and

controlling, by a second unit, the image pickup angle of the vehicle camera based on the calculated rotation angle.

13. A computer readable medium containing executable program instructions executed by a processor, comprising:

program instructions that control at least one sensor to calculate variation in height of the vehicle;

program instructions that control a first unit to calculate a rotational angle of the vehicle to compensate the detected variation in height of the vehicle; and

program instructions that control the image pickup angle of the vehicle camera based on the calculated rotation angle.