Object detection by pattern recognition

• US 6,154,149 A
• Filed: 09/07/1999
• Issued: 11/28/2000
• Est. Priority Date: 09/07/1999
• Status: Expired due to Fees

• Current Assignee: Inteva Products USA LLC (Intevac)
• Original Assignee: Meritor Light Vehicle Systems, Inc.
• Inventors: Kyrtsos, Christos, Bonduel, Pascal, Breynaert, Francois, Hopson, Charles, Davies, Timothy, Tyckowski, Joseph
• Primary Examiner(s): Hofsass, Jeffery A.
• Assistant Examiner(s): Nguyen, Phung
• Application Number:
  US09/391,256
• Time in Patent Office: 448 Days
• Field of Search: 340/903, 340/435, 340/436, 340/437, 340/902, 340/904, 340/933, 340/937, 340/461, 340/901, 340/932.2, 340/426, 180/271, 701/45, 701/47, 348/135, 348/161, 348/148, 382/181, 382/103, 318/480, 49/26, 49/28
• US Class Current: 340/903
• CPC Class Codes: B60Q 1/52 for indicating emergencies
• CPC Class Codes: B60Q 9/008 for anti-collision purposes

Abstract

An object detection system includes a sensor in communication with a controller to identify an object within a field of view. Pattern recognition algorithms are incorporated into the controller, and particular objects are predefined to minimize false detection and sift predefined objects such as vehicles from background clutter. Upon recognition of the object, an indicator in communication with the controller provides an alert to the operator who can then take corrective action. By defining another field of view the controller halts or reverses the movement of a power window to prevent trapping an object between the closing window and the window frame. Yet another field of view includes a vehicle entry point such as a vehicle door. Movement of the vehicle door will be identified by the controller and will provide an alert such as activation of the vehicle alarm system.

Claims

1. An object detection system for a vehicle comprising:

a sensor mounted to have a defined field of view;

a controller in communication with said sensor, said controller operable to recognize a predefined object within said field of view, said predefined object recognizable by said controller by comparing an observed object with said predefined object; and

an indicator in communication with said controller, said indicator providing an alert in response to said controller recognition of said predefined object.

2. The system as recited in claim 1, wherein said sensor is attached to a vehicle side view mirror.

3. The system as recited in claim 1, wherein said sensor is a camera.

4. The system as recited in claim 1, wherein said defined field of view includes an area adjacent the vehicle.

5. The system as recited in claim 1, wherein said predefined object is a vehicle.

6. The system as recited in claim 1, wherein said field of view includes an area above a window closure path.

7. The system as recited in claim 1, wherein said field of view is used for a vehicle security function when the vehicle is parked, said controller activating said indicator in response to an image change within said field of view.

8. An object detection system for a vehicle comprising:

a sensor mounted to have a defined field of view, said defined field of view including a closure path of a moveable closure member; and

a controller in communication with said sensor, said controller operable to recognize an obstruction within said closure path, said obstruction recognizable by said controller by comparing a predefined obstruction-free image of said closure path to said closure path including said obstruction.

9. The system as recited in claim 8, wherein said moveable closure member is a vehicle window.

10. The system as recited in claim 8, wherein said controller only operates to recognize the object when said closure member is being closed.

11. The system as recited in claim 8, wherein said controller reverses the direction of said moveable closure member in response to recognition of the object.

12. The system as recited in claim 8, wherein said sensor is mounted to a vehicle side view mirror.

13. The system as recited in claim 8, wherein said sensor is a camera.

14. An object detection system for a vehicle comprising:

a vehicle side view mirror;

a sensor mounted to have a defined field of view, said defined field of view including an area adjacent the vehicle and a closure path of a moveable closure member;

a controller in communication with said sensor, said controller operable to recognize a predefined object within said area adjacent the vehicle and an obstruction within said closure path; and

an indicator in communication with said controller, said indicator providing an alert in response to said controller recognition of a change to said predefined object relative to said defined field of view and in response to a location of said obstruction relative to said closure path.

15. The system as recited in claim 14, wherein said moveable closure member is a vehicle window, said controller halting movement of said moveable closure member in response to recognition of the object.

16. The system as recited in claim 14, wherein said defined field of view includes a vehicle door, said controller operable to recognize movement of said vehicle door.

17. The system as recited in claim 16, wherein said indicator provides an alarm in response to said controller recognition of said vehicle door movement.

18. The system as recited in claim 16, wherein said indicator transmits an alarm to a remote location in response to said controller recognition of said vehicle door movement.

19. The system as recited in claim 14, wherein said controller is operable to change the field of view between said area adjacent the vehicle and said closure path based upon whether said moveable closure member is moving.

20. The system as recited in claim 19, wherein the sensor is a camera.