Hitch angle detection for trailer backup assist system using multiple imaging devices
First Claim
1. A trailer backup assist system comprising:
- a plurality of imaging devices configured to capture rear-vehicle images; and
a controller configured to;
receive output from each imaging device;
determine a confidence score for the output of each imaging device; and
determine a hitch angle between a vehicle and a trailer based on the output associated with whichever imaging device yielded the highest confidence score;
wherein the plurality of imaging devices comprises a first imaging device coupled to a tailgate of the vehicle, a second imaging device coupled to a cabin of the vehicle, a third imaging device coupled to a side view mirror disposed on one side of the vehicle, and a fourth imaging device coupled to a side view mirror disposed on another side of the vehicle; and
wherein the controller processes the output from the second, third, and fourth imaging devices to identify one or more trailer features when the trailer is located at a maximum controllable hitch angle and a zero hitch angle relative to the vehicle, wherein the maximum controllable hitch angle is defined as the hitch angle at which a full turn in one of a right and a left direction occurs.
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Abstract
A trailer backup assist system is provided herein. A plurality of imaging devices is configured to capture rear-vehicle images. A controller is configured to receive output from each imaging device. The controller processes the output from each imaging device to track a number of trailer features. The controller determines a confidence score for the output of each imaging device. The confidence score is determined based on the number of trailer features being tracked and a tracking quality of each trailer feature. The controller also determines a hitch angle between a vehicle and a trailer based on the output associated with whichever imaging device yielded the highest confidence score.
378 Citations
14 Claims
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1. A trailer backup assist system comprising:
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a plurality of imaging devices configured to capture rear-vehicle images; and a controller configured to; receive output from each imaging device; determine a confidence score for the output of each imaging device; and determine a hitch angle between a vehicle and a trailer based on the output associated with whichever imaging device yielded the highest confidence score; wherein the plurality of imaging devices comprises a first imaging device coupled to a tailgate of the vehicle, a second imaging device coupled to a cabin of the vehicle, a third imaging device coupled to a side view mirror disposed on one side of the vehicle, and a fourth imaging device coupled to a side view mirror disposed on another side of the vehicle; and wherein the controller processes the output from the second, third, and fourth imaging devices to identify one or more trailer features when the trailer is located at a maximum controllable hitch angle and a zero hitch angle relative to the vehicle, wherein the maximum controllable hitch angle is defined as the hitch angle at which a full turn in one of a right and a left direction occurs. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A trailer backup assist system comprising:
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a plurality of imaging devices configured to capture rear-vehicle images; and a controller configured to; receive output from each imaging device; process the output from each imaging device to track a number of trailer features; determine a confidence score for the output of each imaging device, wherein the confidence score is determined based on the number of trailer features being tracked and a tracking quality of each trailer feature; and determine a hitch angle between a vehicle and a trailer based on the output associated with whichever imaging device yielded the highest confidence score; wherein the plurality of imaging devices comprises a first imaging device coupled to a tailgate of the vehicle, a second imaging device coupled to a cabin of the vehicle, a third imaging device coupled to a side view mirror disposed on one side of the vehicle, and a fourth imaging device coupled to a side view mirror disposed on another side of the vehicle; and wherein the controller processes the output from the second, third, and fourth imaging devices to identity one or more trailer features when the trailer is located at a maximum controllable hitch angle and a zero hitch angle relative to the vehicle, wherein the maximum controllable hitch angle is defined as the hitch angle at which a full turn in one of a right and a left direction occurs. - View Dependent Claims (8, 9, 10)
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11. A method comprising:
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providing a plurality of imaging devices configured to capture rear-vehicle images; and supplying output from each imaging device to a controller, the controller configured to; process the output from each imaging device to track a number of trailer features; determine a confidence score for the output of each imaging device, wherein the confidence score is determined based on the number of trailer features being tracked and a tracking quality of each trailer feature; and determine a hitch angle between a vehicle and a trailer based on the output associated with whichever imaging device yielded the highest confidence score; wherein the plurality of imaging devices comprises a first imaging device coupled to a tailgate of the vehicle, a second imaging device coupled to a cabin of the vehicle, a third imaging device coupled to a side view mirror disposed on one side of the vehicle, and a fourth imaging device coupled to a side view mirror disposed on another side of the vehicle; and wherein the controller processes the output from the second, third, and fourth imaging devices to identify one or more trailer features when the trailer is located at a maximum controllable hitch angle and a zero hitch angle relative to the vehicle, wherein the maximum controllable hitch angle is defined as the hitch angle at which a fill turn in one of a right and a left direction occurs. - View Dependent Claims (12, 13, 14)
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Specification