IP Library › Granted Patent US 12,456,304
Granted Patent B2
US 12,456,304 · App. 17/845,557 · Granted Oct 28, 2025

Methods and apparatus to determine the load of a vehicle via camera based height measurement

Inventors: Keith Weston (Canton, MI); Michael Alan McNees (Flat Rock, MI); Lorne Forsythe (Novi, MI); Andrew Niedert (New Hudson, MI); Francis Aroyehun (Chelmsford, GB)
Assignee: Ford Global Technologies, LLC
G06V20/56G06T7/60B60G17/019B60G2400/252B60G2400/60B60G2401/14G06T2207/30252
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Quick Facts
Patent No.
US 12,456,304
App. No.
17/845,557
Granted
Oct 28, 2025
Kind
B2
Abstract

Methods, apparatus, systems, and articles of manufacture to determine the load of a vehicle via camera-based height measurement are disclosed herein. An example vehicle described herein includes a suspension assembly associated with a wheel, a first feature, a first camera, and a processor to execute instructions to capture, via the first camera, a first image including the first feature and a second feature, the first feature and a second feature having a first spatial relationship in the first image, capture, via the first camera, a second image including the first feature and the second feature, the first feature and the second feature having a second spatial relationship in the second image, and determine, based on a difference between the first spatial relationship and the second spatial relationship, a deflection of the suspension assembly.

Claims (46)

1. A vehicle comprising:

a suspension assembly associated with a wheel;

a first feature;

a first camera; and

a processor to execute instructions to:

capture, via the first camera, a first image including the first feature and a second feature, the first feature and the second feature having a first spatial relationship in the first image;

capture, via the first camera, a second image including the first feature and the second feature, the first feature and the second feature having a second spatial relationship in the second image; and

determine, based on a difference between the first spatial relationship and the second spatial relationship, a deflection of the suspension assembly; and

modify a performance characteristic of the vehicle based on the deflection.

2. The vehicle of claim 1 , wherein the processor executes instructions to:

determine a load on the vehicle based on the deflection.

3. The vehicle of claim 1 , wherein the first feature is rigidly coupled to a sprung mass of the vehicle.

4. The vehicle of claim 1 , wherein the first camera is a back-up camera and the first feature is a hitch-ball.

5. The vehicle of claim 4 , further including a second camera disposed on a front of the vehicle and wherein the processor executers instructions to:

capture, via the second camera, a third image;

determine, based on the first image and the third image, a pitch of the vehicle; and determine, based on the first image and the third image, a grade of a driving surface of the vehicle, the deflection of the suspension assembly further determined based on at least one of the grade or the pitch.

6. The vehicle of claim 1 , wherein the second feature is an external feature adjacent to the vehicle.

7. The vehicle of claim 1 , wherein the processor executes instructions to prompt a user of the vehicle to input a dimension of the first feature, the deflection of the suspension assembly further determined based on the dimension of the first feature.

8. A method comprising:

capturing, via a first camera associated with a vehicle, a first image including a first feature of the vehicle and a second feature adjacent to the vehicle, the first feature and the second feature having a first spatial relationship in the first image;

capturing, via the first camera, a second image including the first feature and the second feature, the first feature and the second feature having a second spatial relationship in the second image;

determining, based on a difference between the first spatial relationship and the second spatial relationship, a deflection of a suspension assembly of the vehicle; and

modifying a performance characteristic of the vehicle based on the deflection.

9. The method of claim 8 , further including

determining a load on the vehicle based on the deflection.

10. The method of claim 8 , wherein the first feature is rigidly coupled to a sprung mass of the vehicle.

11. The method of claim 8 , wherein the first camera is a back-up camera and the first feature is a hitch-ball.

12. The method of claim 11 , further including:

capturing, via a second camera associated with the vehicle, a third image;

determining, based on the first image and the third image, a pitch of the vehicle; and

determining, based on the first image and the third image, a grade of a driving surface of the vehicle, the deflection of the suspension assembly further determined based on at least one of the grade or the pitch.

13. The method of claim 8 , wherein the second feature is an external feature adjacent to the vehicle.

14. The method of claim 8 , further including prompting a user of the vehicle to input a dimension of the first feature, the deflection of the suspension assembly further determined based on the dimension of the first feature.

15. A non-transitory computer readable medium comprising instructions, which when executed cause a processor to at least:

capture, via a first camera associated with a vehicle, a first image including a first feature of the vehicle and a second feature, the first feature and the second feature having a first spatial relationship in the first image;

capture, via the first camera, a second image including the first feature and the second feature, the first feature and the second feature having a second spatial relationship in the second image;

determine, based on a difference between the first spatial relationship and the second spatial relationship, a deflection of a suspension assembly of the vehicle; and

modify a performance characteristic of the vehicle based on the deflection.

16. The non-transitory computer readable medium of claim 15 , wherein the instructions when executed cause a processor to

determine a load on the vehicle based on the deflection.

17. The non-transitory computer readable medium of claim 15 , wherein the first feature is rigidly coupled to a sprung mass of the vehicle.

18. The non-transitory computer readable medium of claim 15 , wherein the first camera is a back-up camera and the first feature is a hitch-ball.

19. The non-transitory computer readable medium of claim 18 , wherein the instructions when executed cause a processor to:

capture, via a second camera associated with the vehicle, a third image;

determine, based on the first image and the third image, a pitch of the vehicle; and determine, based on the first image and the third image, a grade of a driving surface of the vehicle, the deflection of the suspension assembly further determined based on at least one of the grade or the pitch.

20. The non-transitory computer readable medium of claim 15 , wherein the second feature is an external feature adjacent to the vehicle.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 5, 2022
From: WESTON, KEITH; MCNEES, MICHAEL ALAN; FORSYTHE, LORNE; NIEDERT, ANDREW; AROYEHUN, FRANCIS
To: FORD GLOBAL TECHNOLOGIES, LLC
Reel/Frame 060988/0178 →
Continuity (1)
Related Publication 20230410528A1 · Dec 21, 2023
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