Imaging system with adaptive high beam control

• US 9,889,790 B2
• Filed: 06/23/2017
• Issued: 02/13/2018
• Est. Priority Date: 06/24/2016
• Status: Active Grant

• Current Assignee: HL Klemove Corporation
• Original Assignee: Gentex Corporation
• Inventors: Liken, Peter A., Smeyers, Marc A.
• Primary Examiner(s): PHAM, THAI N
• Application Number:
  US15/631,117
• Publication Number:
  US 20170368981A1
• Time in Patent Office: 235 Days
• CPC Class Codes: B60Q 1/1423 Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
• CPC Class Codes: B60Q 1/143 combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
• CPC Class Codes: B60Q 2300/052 Switching delay, i.e. the beam is not switched or changed instantaneously upon occurrence of a condition change
• CPC Class Codes: B60Q 2300/056 Special anti-blinding beams, e.g. a standard beam is chopped or moved in order not to blind
• CPC Class Codes: B60Q 2300/21 Manual control
• CPC Class Codes: B60Q 2300/3321 Detection of streetlights
• CPC Class Codes: B60Q 2300/41 preceding vehicle
• CPC Class Codes: B60Q 2300/42 oncoming vehicle
• CPC Class Codes: G06F 18/2433 Single-class perspective, e.g. one-against-all classification; Novelty detection; Outlier detection
• CPC Class Codes: G06V 10/60 relating to illumination properties, e.g. using a reflectance or lighting model
• CPC Class Codes: G06V 20/58 Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
• CPC Class Codes: G06V 20/584 of vehicle lights or traffic lights

Abstract

An imaging system is provided herein. An image sensor is configured to acquire one or more images of a scene external and forward of a controlled vehicle and to generate image data corresponding to the acquired images. A controller is communicatively connected to the image sensor and is configured to receive and analyze the image data. The controller detects an object of interest in the image data and generates an ON signal or an OFF signal based on the detection of the object of interest in the image data, or lack thereof. A high beam control of the vehicle is turned ON based on the ON signal or turned OFF based on the OFF signal. The controller modifies a future response time at which the OFF signal is generated based on an external overriding of the ON signal or the OFF signal.

Claims

1. An imaging system comprising:

an image sensor configured to acquire one or more images of a scene external and forward of a controlled vehicle and to generate image data corresponding to the acquired images;

a controller communicatively connected to the image sensor and configured to;

receive and analyze the image data;

detect an object of interest in the image data, wherein the object of interest is at least one of an oncoming vehicle and a preceding vehicle;

generate an ON signal or an OFF signal based on the detection of the object of interest in the image data, or lack thereof, wherein a high beam control of the vehicle is turned ON based on the ON signal, and wherein the high beam control of the vehicle is turned OFF based on the OFF signal; and

modify a future response time at which the OFF signal is generated based on an external overriding of the ON signal or the OFF signal.

2. The imaging system of claim 1, wherein modification of the future response time is further based on detecting at least one object of interest in the image data subsequent to the external overriding of the ON signal or the OFF signal.

3. The imaging system of claim 1, wherein the controller shortens or increases the future response time based on the external overriding of the ON signal and at least one object of interest being detected in the image data.

4. The imaging system of claim 1, wherein modification of the future response time is further based on detection of at least one object of interest in the image data, a speed of the vehicle, a relative positioning between the vehicle and the at least one object of interest, a geographical location of the vehicle, or any combination thereof.

5. The imaging system of claim 1, wherein the controller is further configured to detect at least one object of noninterest in the image data, the at least one object of noninterest comprising non-vehicle light sources detected in the image data.

6. The imaging system of claim 5, wherein the controller is further configured to classify the at least one object of noninterest based on the detection of associated light features in the image data, and wherein a weighted value is assigned to light features associated with the at least one object of noninterest in order to hasten or prolong classification thereof, thereby decreasing or increasing the future response time at which the OFF signal is generated.

7. The imaging system of claim 1, wherein the future response time corresponds to at least one of a time at which to begin a dimming off of a high beam and a length of time to dim off the high beam.

8. A method of controlling exterior lights of a vehicle, comprising the steps of:

acquiring one or more images of a scene external and forward of a controlled vehicle and to generating image data corresponding to the acquired images;

analyzing the image data;

detecting an object of interest in the image data, wherein the object of interest is at least one of an oncoming vehicle and a preceding vehicle;

generating an ON signal or an OFF signal based on the detection of the object of interest in the image data, or lack thereof, wherein a high beam control of the vehicle is turned ON based on the ON signal, and wherein the high beam control of the vehicle is turned OFF based on the OFF signal; and

modifying a future response time at which the OFF signal is generated based on an external overriding of the ON signal or the OFF signal.

9. The method of claim 8, wherein the step of modifying the future response time is further based on detecting at least one object of interest in the image data subsequent to the external overriding of the ON signal or the OFF signal.

10. The method of claim 8, wherein the step of modifying the future response time further comprises shortening or increasing the future response time based on the external overriding of the ON signal and at least one object of interest being detected in the image data.

11. The method of claim 8, wherein the step of modifying the future response time is further based on detection of at least one object of interest in the image data, a speed of the vehicle, a relative positioning between the vehicle and the at least one object of interest, a geographical location of the vehicle, or any combination thereof.

12. The method of claim 8, further comprising the step of detecting at least one object of noninterest in the image data, the at least one object of noninterest comprising non-vehicle light sources detected in the image data.

13. The method of claim 12, further comprising the step of classifying the at least one object of noninterest based on the detection of associated light features in the image data and assigning a weighted value to light features associated with the at least one object of noninterest in order to hasten or prolong classification thereof, thereby decreasing or increasing the future response time at which the OFF signal is generated.

14. The method of claim 8, wherein the future response time corresponds to at least one of a time at which to begin a dimming off of a high beam and a length of time to dim off the high beam.

15. A non-transitory computer readable medium having stored thereon software instructions executed by a processor, the software instructions comprising the steps of:

acquiring one or more images of a scene external and forward of a controlled vehicle and to generating image data corresponding to the acquired images;

analyzing the image data;

detecting an object of interest in the image data, wherein the object of interest is at least one of an oncoming vehicle and a preceding vehicle;

generating an ON signal or an OFF signal based on the detection of the object of interest in the image data, or lack thereof, wherein a high beam control of the vehicle is turned ON based on the ON signal, and wherein the high beam control of the vehicle is turned OFF based on the OFF signal; and

modifying a future response time at which the OFF signal is generated based on an external overriding of the ON signal or the OFF signal.

16. The non-transitory computer readable medium of claim 15, wherein the step of modifying the future response time is further based on detecting at least one object of interest in the image data subsequent to the external overriding of the ON signal or the OFF signal.

17. The non-transitory computer readable medium of claim 15, wherein the step of modifying the future response time further comprises shortening or increasing the future response time based on the external overriding of the ON signal and at least one object of interest being detected in the image data.

18. The non-transitory computer readable medium of claim 15, wherein the step of modifying the future response time is further based on detection of at least one object of interest in the image data, a speed of the vehicle, a relative positioning between the vehicle and the at least one object of interest, a geographical location of the vehicle, or any combination thereof.

19. The non-transitory computer readable medium of claim 15, further comprising the step of detecting at least one object of noninterest in the image data, the at least one object of noninterest comprising non-vehicle light sources detected in the image data.

20. The non-transitory computer readable medium of claim 19, further comprising the step of classifying the at least one object of noninterest based on the detection of associated light features in the image data and assigning a weighted value to light features associated with the at least one object of noninterest in order to hasten or prolong classification thereof, thereby decreasing or increasing the future response time at which the OFF signal is generated.