IP Library Granted Patent US 9,272,709
Granted Patent B2
US 9,272,709 · App. 14/610,495 · Granted Mar 1, 2016

Systems and methods for detecting traffic lights

Inventor: Itai Ben Shalom (Jerusalem, IL)
Assignee: MOBILEYE VISION TECHNOLOGIES LTD.
B60W30/00B60T7/12B60W10/20B62D6/00G06K9/00798G06K9/00805G06K9/00825G06T7/602B60W2550/10B60W2550/142B60W2710/207G06T2207/30256G06T2207/30261
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Quick Facts
Patent No.
US 9,272,709
App. No.
14/610,495
Granted
Mar 1, 2016
Kind
B2
Abstract

Systems and methods use cameras to provide autonomous navigation features. In one implementation, a system includes at least one image capture device configured to acquire a plurality of images of a traffic light located in a region above the vehicle, outside of a sightline of a typical driver location in the vehicle. The system further includes a data interface, and at least one processing device. The at least one processing device may be configured to receive the plurality of images via the data interface, determine a status of the traffic light based on analysis of at least a first image from among the plurality of images, determine a change in status of the traffic light based on at least a second image from among the plurality of images, and cause a system response based on the determination of the change in status.

Claims (40)

1. A traffic light detection system for a vehicle, the system comprising:

at least one image capture device configured to acquire a plurality of images of a traffic light, wherein the traffic light is located in a region above the vehicle and outside of a sightline of a typical driver location in the vehicle;

a data interface; and

at least one processing device configured to:

receive the plurality of images via the data interface;

determine a status of the traffic light based on analysis of at least a first image from among the plurality of images;

determine a change in status of the traffic light based on at least a second image from among the plurality of images; and

cause a system response based on the determination of the change in status.

2. The traffic light detection system of claim 1 , wherein the at least one image capture device includes a sensor and a lens whose focal length is shorter than a short side of the sensor.

3. The traffic light detection system of claim 1 , wherein the at least one processing device is further configured to correct optical distortion in the at least a first image.

4. The traffic light detection system of claim 1 , wherein a vertical field-of-view from the typical driver location in the vehicle is about 65 degrees and a vertical field-of-view of the at least one image capture device is more than 65 degrees.

5. The traffic light detection system of claim 1 , wherein the at least one image capture device is configured for location within the vehicle.

6. The traffic light detection system of claim 1 , wherein the at least one processing device is further configured to determine a status of the traffic light when the at least one image capture device acquires the plurality of images through a windshield of the vehicle.

7. The traffic light detection system of claim 1 , wherein the at least one image capture device is configured to capture images of traffic lights located in a conic section zone of between 150 to 180 degrees relative to a location of the at least one image capture device.

8. The traffic light detection system of claim 1 , wherein the at least one image capture device is configured to capture images of traffic lights located in a conic section zone of between 170 to 180 degrees relative to a location of the at least one image capture device.

9. The traffic light detection system of claim 1 , wherein the system response includes reporting the change in status to the driver of the vehicle.

10. The traffic light detection system of claim 1 , wherein the system response includes accelerating to a driver-specified cruise speed.

11. The traffic light detection system of claim 1 , wherein the at least one processing device is further configured to determine a relevance of the traffic light captured in the plurality of images based on at least one indicator of vehicle position.

12. The traffic light detection system of claim 11 , wherein the at least one indicator of vehicle position includes a lane marker recognized based on analysis of the plurality of images.

13. The traffic light detection system of claim 11 , wherein the at least one indicator of vehicle position includes a vehicle location acquired by GPS.

14. The traffic light detection system of claim 13 , wherein the at least one processing device is configured to compare the GPS acquired vehicle location to map data to determine the relevance of the traffic light.

15. A vehicle, comprising:

a body;

at least one image capture device configured to acquire a plurality of images of a traffic light, wherein the traffic light is located in a region above the vehicle and outside of a sightline of a typical driver location in the vehicle;

a data interface; and

at least one processing device configured to:

receive the plurality of images via the data interface;

determine a status of the traffic light based on analysis of at least a first image from among the plurality of images;

determine a change in status of the traffic light based on at least a second image from among the plurality of images; and

cause a system response based on the determination of the change in status.

16. The vehicle of claim 15 , wherein the at least one image capture device is configured for location within the vehicle.

17. The vehicle of claim 15 , wherein the at least one processing device is further configured to determine a status of the traffic light when the at least one image capture device acquires the plurality of images through a windshield of the vehicle.

18. The vehicle of claim 15 , wherein the system response includes reporting the change in status to the driver of the vehicle.

19. The vehicle of claim 15 , wherein the system response includes accelerating to a driver specified cruise speed.

20. A method for navigating a vehicle, the method comprising:

acquiring, via at least one image capture device, a plurality of images of a traffic light, wherein the traffic light is located in a region above the vehicle and outside of a sightline of a typical driver location in vehicle;

determining a status of the traffic light based on analysis of at least a first image from among the plurality of images;

determining a change in status of the traffic light based on at least a second image from among the plurality of images; and

causing a system response based on the determination of the change in status.

21. The traffic light detection system of claim 1 , wherein the at least one image capture device includes an ultra-wide lens associated with a vertical direction.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2015
From: SHALOM, ITAI BEN
To: MOBILEYE VISION TECHNOLOGIES LTD.
Reel/Frame 036160/0785 →
Continuity (6)
Provisional Application 61933325 · Jan 30, 2014
Provisional Application 61993111 · May 14, 2014
Provisional Application 62040246 · Aug 21, 2014
Provisional Application 62060603 · Oct 7, 2014
Provisional Application 62102669 · Jan 13, 2015
Related Publication 20150210277A1 · Jul 30, 2015