Multi-camera vision system for a vehicle

Patent metadata

Field	Value
Publication number	US-10144353-B2
Application number	US-201715790173-A
Country	US
Kind code	B2
Filing date	Oct 23, 2017
Priority date	Aug 21, 2002
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A multi-camera vision system for a vehicle includes a plurality of cameras viewing exterior the equipped vehicle and at least one non-visual sensor sensing exterior of the equipped vehicle. Captured image data and sensor data are provided to a central data processor. At the central data processor, image data is fused with sensor data and processed in order to detect vehicles that are present external the equipped vehicle. The central data processor includes a digital signal processor operable to process data at a data processioning speed of at least 30 MIPS. Via processing at the central data processor of image data and sensor data, a potential hazard present exterior the equipped vehicle is determined to exist. The potential hazard arises from presence of rear-approaching traffic in at least one of (i) a side lane to the equipped vehicle and (ii) a rear lane to the equipped vehicle.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A multi-camera vision system for a vehicle, said multi-camera vision system comprising:
a rear-mounted video camera at a rear portion of a vehicle equipped with said multi-camera vision system;
said rear-mounted video camera having at least a rearward field of view external of the equipped vehicle;
said rear-mounted video camera operable to capture image data at least rearward of the equipped vehicle during driving of the equipped vehicle;
a front-mounted video camera at a front portion of the equipped vehicle;
said front-mounted video camera having at least a forward field of view external of the equipped vehicle;
said front-mounted video camera operable to capture image data at least forward of the equipped vehicle during driving of the equipped vehicle;
a first side-mounted video camera at a driver-side side portion of the equipped vehicle;
said first side-mounted video camera having at least a sideward field of view external of the equipped vehicle;
said first side-mounted video camera operable to capture image data at least sideward of the equipped vehicle during driving of the equipped vehicle;
a second side-mounted video camera at a passenger-side side portion of the equipped vehicle;
said second side-mounted video camera having at least a sideward field of view external of the equipped vehicle;
said second side-mounted video camera operable to capture image data at least sideward of the equipped vehicle during driving of the equipped vehicle;
wherein the equipped vehicle is further equipped with at least one non-visual sensor having a field of sensing exterior of the equipped vehicle;
wherein said at least one non-visual sensor senses sensor data;
a central data processor disposed in the equipped vehicle;
wherein image data is provided to said central data processor;
wherein sensor data is provided to said central data processor;
wherein, at said central data processor, image data is fused with sensor data and processed in order to detect vehicles that are present external the equipped vehicle;
wherein processing at said central data processor of captured image data comprises use of an edge detection algorithm;
wherein said central data processor comprises a digital signal processor operable to process data at a data processioning speed of at least 30 MIPS;
wherein, via processing at said central data processor of image data and sensor data, a potential hazard present exterior the equipped vehicle is determined to exist; and
wherein said potential hazard arises from presence of rear-approaching traffic in at least one of (i) a side lane to the equipped vehicle and (ii) a rear lane to the equipped vehicle.

2. The multi-camera vision system of claim 1 , wherein data is provided to said central data processor via a vehicle network of the equipped vehicle.

3. The multi-camera vision system of claim 1 , wherein image data and sensor data are processed at said central data processor to generate an alert to warn a driver of the equipped vehicle who is operating the equipped vehicle of the potential hazard determined to exist exterior the equipped vehicle.

4. The multi-camera vision system of claim 1 , wherein said first side-mounted video camera at the driver-side side portion of the equipped vehicle is included in a driver-side side view mirror assembly of the equipped vehicle, and wherein said second side-mounted video camera at the passenger-side side portion of the equipped vehicle is included in a passenger-side side view mirror assembly of the equipped vehicle, and wherein the field of view of said rear-mounted video camera encompasses at least a portion of a vehicle bumper of the equipped vehicle.

5. The multi-camera vision system of claim 4 , wherein said front-mounted video camera, said first side-mounted video camera, said second side-mounted video camera, said rear-mounted video camera and said at least one non-visual sensor are part of a park aid system of the equipped vehicle.

6. The multi-camera vision system of claim 4 , wherein video images derived from image data captured by at least some of said front-mounted video camera, said first side-mounted video camera, said second side-mounted video camera and said rear-mounted video camera are output by said central data processor for display by a display device of the equipped vehicle, and wherein said display device comprises a video screen operable to display the video images for viewing by a driver of the equipped vehicle who is operating the equipped vehicle.

7. The multi-camera vision system of claim 6 , wherein the video images displayed by said video screen inform the driver of the environment in which the equipped vehicle is being operated.

8. The multi-camera vision system of claim 7 , wherein said display device is disposed at an interior rearview mirror assembly of the equipped vehicle, and wherein at least one of (a) said display device displays video images for viewing through a mirror reflective element of said interior rearview mirror assembly by the driver of the equipped vehicle and (b) said display device automatically extends from said interior rearview mirror assembly responsive to the vehicle transmission being shifted into reverse gear, and wherein said interior rearview mirror assembly comprises a molded plastic mounting arm having at least one ball member at least one end thereof and having electrical conducting elements extending therethrough, and wherein a mirror mounting portion is molded over said ball member, and wherein said mounting arm comprises a mounting arm polymeric material having a first linear mold shrinkage factor and a first flexural modulus, and wherein said mirror mounting portion comprises a mirror mounting polymeric material having a second linear mold shrinkage factor and a second flexural modulus, and wherein said second linear mold shrinkage factor is greater than said first linear mold shrinkage factor, and wherein said second flexural modulus is lower than said first flexural modulus.

9. The multi-camera vision system of claim 7 , wherein the video images comprise an overlay that guides the driver of the equipped vehicle when hitching a trailer to a vehicle hitch of the equipped vehicle.

10. The multi-camera vision system of claim 9 , wherein said overlay aids in guiding connection of the vehicle hitch of the equipped vehicle to a trailer tongue of the trailer.

11. The multi-camera vision system of claim 10 , wherein said video screen of said display device comprises a backlit thin film transistor LCD video screen backlit by a plurality of white light emitting light emitting diodes.

12. The multi-camera vision system of claim 11 , wherein said plurality of white light emitting light emitting diodes comprises an array of at least four white light emitting light emitting diodes.

13. The multi-camera vision system of claim 12 , wherein said display device is operable to display video images with a display intensity, as viewed by the driver of the equipped vehicle, greater than 200 candelas/sq. meter.

14. The multi-camera vision system of claim 4 , wherein a vehicle hitch is disposed at a rear portion of the equipped vehicle, and wherein the rearward field of view of said rear-mounted video camera encompasses the vehicle hitch, and wherein the vehicle hitch is configured to connect to a trailer tongue of a trailer to connect the trailer to the equipped vehicle.

15. The multi-camera vision system of claim 14 , wherein said rear-mounted video camera comprises a rear backup camera, and

Assignees

• Magna Electronics Inc

Inventors

• Karner Lee
• Schofield Kenneth
• Lynam Niall R

Classifications

• G06T2207/30261

  Obstacle · CPC title

• B60R1/00 Primary

  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 title

• B60R2011/0033

  Rear-view mirrors · CPC title

• G06T2207/30232

  Surveillance · CPC title

• B60R2300/8093

  for obstacle warning · CPC title