Automated vision-based orientation measurement system and method of use

Patent metadata

Field	Value
Publication number	US-12540794-B2
Application number	US-202418582999-A
Country	US
Kind code	B2
Filing date	Feb 21, 2024
Priority date	Feb 21, 2024
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

A calibration assembly for a guided vehicle. The calibration assembly includes an orientation marker that operably engages with a first guidance apparatus of the guided vehicle. The calibration assembly also includes an imaging assembly that operably engages with and is in electrical communication with a second guidance apparatus of the guided vehicle. When the imaging assembly captures the orientation marker at a translated position for at least one cycle, the imaging assembly calibrates a rotational displacement between a first guidance direction of the first guidance apparatus and a second guidance direction of the second guidance apparatus based on an angular displacement of the orientation marker measured between a zeroed position denoting the first guidance direction and the translated position.

First claim

What is claimed is:

1 . A calibration assembly for a guided vehicle, comprising:
an orientation marker operably engaged with a first guidance apparatus of the guided vehicle; an imaging assembly operably engaged with and in electrical communication with a second guidance apparatus of the guided vehicle; wherein when the imaging assembly captures the orientation marker at a translated position for at least one cycle, the imaging assembly calibrates a rotational displacement between a first guidance direction of the first guidance apparatus and a second guidance direction of the second guidance apparatus based on an angular displacement of the orientation marker measured between a zeroed position denoting the first guidance direction and the translated position; and
wherein the orientation marker comprises:
a non-transitory computer readable medium facing at the imaging assembly and configured to store data about the first guidance apparatus.

2 . The calibration assembly of claim 1 , wherein the imaging assembly comprises:
an imaging device operably engaged with the second guidance apparatus of the guided vehicle and faces the orientation marker; a processor operatively connected with the imaging device; and a calibration program executable by the processor, wherein the calibration program includes a zeroed position of the orientation marker; wherein when the imaging device captures the orientation marker at the translated position for the at least one cycle in response to the processor executing the calibration program, the processor calibrates the rotational displacement between the first guidance direction of the first guidance apparatus and the second guidance direction of the second guidance apparatus based on the angular displacement of the orientation marker measured between the zeroed position and the translated position.

3 . The calibration assembly of claim 2 , wherein the imaging assembly further comprises:
at least one illumination device operably engaged with the processor and facing towards the orientation marker; wherein the at least one illumination device is configured to illuminate at least a portion of the orientation marker prior to the imaging device viewing the orientation marker.

4 . The calibration assembly of claim 2 , wherein the orientation marker comprises:
a geometric shape of the orientation marker denoting the first guidance direction at the zeroed position; wherein the calibration assembly is configured to calibrate the second guidance apparatus with the first guidance apparatus based on the angular displacement between a second geometric shape of the translated position and the geometric shape of the zeroed position.

5 . The calibration assembly of claim 2 , further comprising:
at least one illumination device operably engaged with the orientation marker and facing towards the imaging device; wherein the at least one illumination device is configured to illuminate the orientation marker from the first guidance apparatus and remote from the imaging device.

6 . The calibration assembly of claim 1 , wherein the orientation marker is made of a retro-reflective material.

7 . The calibration assembly of claim 2 , wherein the imaging device is a visible light camera equipped with a macro lens.

8 . A method, comprising:
installing an orientation marker with a first guidance apparatus of a guidance kit, wherein the first guidance apparatus defines a first guidance direction; installing an imaging assembly with a second guidance apparatus of the guidance kit, wherein the second guidance apparatus defines a second guidance direction independent of the first guidance direction; wherein the orientation marker comprises:
a non-transitory computer readable medium facing at the imaging assembly and configured to store data about the first guidance apparatus;
loading a computer program product for calibration of the guidance kit on a non-transitory computer readable medium of the imaging assembly that is executable by a processor of the imaging assembly which, when executed by the processor, causes the processor to: command an imaging device of the imaging assembly to analyze at least one image of the orientation marker, wherein the orientation marker is provided at a translated position; receive the at least one image from the imaging device; measure an angular displacement of the orientation marker between a zeroed position stored on the computer readable medium and the translated position; and calibrate a rotational displacement between the first guidance direction of the first guidance apparatus and the second guidance direction of the second guidance apparatus.

9 . The method of claim 8 , wherein when the computer program product is executed by the processor, the processor is further caused to:
command an illumination device of the imaging assembly to illuminate at least a portion of the orientation marker prior to the imaging device capturing the at least one image of the orientation marker.

10 . The method of claim 8 , further comprising:
installing a non-transitory computer readable medium on the orientation marker to store data about the first guidance apparatus; and wherein when the non-transitory computer program product is executed by the processor, the processor is further caused to: analyze the data stored in the non-transitory computer readable medium to acquire knowledge of the first guidance apparatus.

11 . The method of claim 8 , wherein the orientation marker is formed of retro-reflective material.

12 . The method of claim 8 , wherein when the computer program product is executed by the processor, the processor is further caused to:
command an illumination device to illuminate the orientation marker from the first guidance apparatus prior to the imaging device capturing the at least one image of the orientation marker.

13 . The method of claim 8 , wherein the imaging device is a visible light camera equipped with macro lens.

14 . A computer-implemented method stored on a non-transitory computer readable medium of a calibration assembly and executable by a processor of the calibration assembly on a guided vehicle, the computer-implemented method comprising:
executing, by the processor, a first instruction to command an imaging device of the calibration assembly to capture at least one image of an orientation marker, wherein the orientation marker comprises a non-transitory computer readable medium facing the imaging assembly and configured to store data about a first guidance apparatus of the guided vehicle, wherein the orientation marker is provided at a translated position; executing, by the processor, a second instruction to receive the at least one image from the imaging device; executing, by the processor, a third instruction to measure an angular displacement of the orientation marker between a zeroed position stored on the non-transitory computer readable medium and the translated position; and executing, by the processor, a fourth instruction to calibrate a rotational displacement between a first guidance direction of the first guidance apparatus and a second guidance direction of a second guidance apparatus.

15 . The computer-implemented method of claim 14 , further comprising:
executing, by the processor, a fifth instruction to command an illumination device of the calibration assembly to illuminate at least a portion of the orientation marker prior to the imaging device capturing the at least one image of the orientation marker.

16 . The computer-implemented method of

Assignees

• Bae Sys Inf & Elect Sys Integ

Inventors

• Miska Jacob W
• Notaro Gregory S
• Adams Scott J

Classifications

• G06T2207/30252

  Vehicle exterior; Vicinity of vehicle · CPC title

• G06T2207/30204

  Marker · CPC title

• H04N23/56

  provided with illuminating means · CPC title

• G06T7/73

  using feature-based methods · CPC title

• F41G7/007

  Preparatory measures taken before the launching of the guided missiles · CPC title