System and method for vehicle headlight control

Patent metadata

Field	Value
Publication number	US-10343592-B2
Application number	US-201916253039-A
Country	US
Kind code	B2
Filing date	Jan 21, 2019
Priority date	Aug 17, 2017
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

The present disclosure relates to systems, devices and methods for vehicle headlight control. In one embodiment, a method includes receiving image data from a front facing camera of the vehicle and detecting at least one object in the image data. An illumination level of the at least one object in the image data is detected and a control setting is determined to modify illumination of at least one lighting element of the vehicle, wherein the control setting is determined to increase an illumination level for the at least one object. The method also includes controlling the at least one lighting element of the vehicle in response to the control setting. Vehicle systems and devices are provided with a front facing camera and a control unit for a plurality of lighting elements wherein control settings may be modified based on objects detected in image data.

First claim

What is claimed is:

1. A method for vehicle headlight control, the method comprising:
receiving, by a control unit, image data from a front facing camera of the vehicle;
detecting, by the control unit, at least one object in the image data, wherein object detection includes determining object position;
detecting, by the control unit, an illumination level of the at least one object in the image data, wherein the illumination level relates to object brightness in the image data;
determining, by the control unit, a control setting to modify illumination of at least one lighting element of the vehicle, wherein the control setting is determined to increase an illumination level for the at least one object based on object position to increase illumination of at least one important object in a scene; and
controlling, by the control unit, the at least one lighting element of the vehicle in response to the control setting, wherein controlling includes adjusting a beam pattern of the at least one lighting element of the vehicle.

2. The method of claim 1 , wherein the image data is video data captured for a scene associated with the direction of travel of the vehicle.

3. The method of claim 1 , wherein the at least one object includes one or more of a pedestrian, vehicle, person, and cyclist.

4. The method of claim 1 , wherein the illumination level relates to one or more of brightness and light distribution.

5. The method of claim 1 , wherein importance of each object in the scene is estimated based on object visual characteristics.

6. The method of claim 1 , wherein the control setting modifies the angular position and direction of the at least one lighting element to maximize illumination of important objects.

7. The method of claim 1 , wherein the control setting is determined using a gradient descent to estimate orientation of a lighting element.

8. The method of claim 1 , wherein controlling includes adjusting direction of the at least one lighting element of the vehicle.

9. The method of claim 1 , wherein controlling includes activation of one or more illumination sources of vehicle lighting elements.

10. The method of claim 1 , wherein the control setting relates to illumination of a section of captured image data and controlling includes control of one or more vehicle lighting elements to increase brightness for the section of captured image data.

11. A vehicle comprising:
a plurality of lighting elements;
a front facing camera; and
a control unit for the plurality of lighting elements, the control unit configured to
receive image data from a front facing camera of the vehicle;
detect at least one object in the image data, wherein object detection includes determining object position;
detect an illumination level of the at least one object in the image data, wherein the illumination level relates to object brightness in the image data;
determine a control setting to modify an illumination output for at least one lighting element of the vehicle, wherein the control setting is determined to increase an illumination level for the at least one object based on object position to increase illumination of at least one important object in a scene; and
control the least one lighting element of the vehicle in response to the control setting, wherein controlling includes adjusting a beam pattern of the at least one lighting element of the vehicle.

12. The device of claim 11 , wherein the image data is video data captured for a scene associated with the direction of travel of the vehicle.

13. The device of claim 11 , wherein the at least one object includes one or more of a pedestrian, vehicle, person, and cyclist.

14. The device of claim 11 , wherein the illumination level relates to one or more of brightness and light distribution.

15. The device of claim 11 , wherein importance of each object in the scene is estimated based on object visual characteristics.

16. The device of claim 11 , wherein the control setting modifies the angular position and direction of the at least one lighting element to maximize illumination of important objects.

17. The device of claim 11 , wherein the control setting is determined using a gradient descent to estimate orientation of a lighting element.

18. The device of claim 11 , wherein controlling includes adjusting direction of the at least one lighting element of the vehicle.

19. The device of claim 11 , wherein controlling includes activation of one or more illumination sources of vehicle lighting elements.

20. The device of claim 11 , wherein the control setting relates to illumination of a section of captured image data and controlling includes control of one or more vehicle lighting elements to increase brightness for the section of captured image data.

Assignees

• Harman Int Ind

Inventors

• Biswal Rajesh
• Sai Srinivas
• Sahay Pratyush

Classifications

• G06V10/141

  Control of illumination · CPC title

• G06V10/145

  Illumination specially adapted for pattern recognition, e.g. using gratings · CPC title

• G06K9/2027

  Physics · mapped topic

• B60Q2300/45

  Special conditions, e.g. pedestrians, road signs or potential dangers · CPC title

• B60Q2300/41

  preceding vehicle · CPC title