US 12,269,544 B2
Image based trailer wheelbase determination
Mohammad Gudarzi, San Diego, CA (US); Liang Ma, Rochester, MI (US); Utkarsh Sharma, Troy, MI (US); and Troy Otis Cooprider, White Lake, MI (US)
Assigned to STONERIDGE, INC., Novi, MI (US)
Filed by Stoneridge, Inc., Novi, MI (US)
Filed on Jun. 15, 2021, as Appl. No. 17/347,902.
Prior Publication US 2022/0396322 A1, Dec. 15, 2022
Int. Cl. B62D 63/08 (2006.01); B60R 1/12 (2006.01); B60R 1/22 (2022.01); B60R 1/00 (2022.01)
CPC B62D 63/08 (2013.01) [B60R 1/22 (2022.01); B60R 1/002 (2013.01); B60R 1/003 (2013.01); B60R 2300/301 (2013.01); B60R 2300/8026 (2013.01); B60R 2300/8046 (2013.01); B60R 2300/8086 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for determining a trailer detection parameter of a trailer comprising:
receiving an image from at least one camera at a controller, the at least one camera defining a field of view including at least a portion of a vehicle trailer;
determining a trailer angle of the vehicle trailer relative to a tractor;
identifying at least one feature in an image of the trailer;
determining a two-dimensional distance from the at least one feature to a predefined position on the image, wherein the two-dimensional distance corresponds to a number of pixels in the image; and
converting the two-dimensional distance to a three-dimensional distance based at least in part on the determined trailer angle, wherein the three-dimensional distance is a trailer detection parameter of the trailer, wherein converting the two-dimensional distance to the three-dimensional distance is performed by referencing at least one lookup table that is based upon the determined trailer angle, the lookup table mapping the number of pixels to the three-dimensional distance.