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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-12607452-B2, on 21 April 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000000161

2D area array camera-line laser 3D sensor joint calibration method and device

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Classification
Sensors, Controls & Machine Vision › Position and Presence Sensing
Original source
US-12607452-B2, the United States Patent and Trademark Office, 21 April 2026
Document SHA-256
2acef6c0bbc44070470156a6e8594a4d2372ff07d36d799aadb83378438b0a4a

Abstract

A 2D area array camera-line laser 3D sensor joint calibration method, comprising: establishing a 3D coordinate system of the line laser 3D sensor, and obtaining 3D coordinates of a light bar point on the 2D area array camera; placing a target at a common measurement position, and allowing the 2D area array camera to acquire images of intersection lines of three sets of laser plane and cylinders and the image coordinates of three sets of laser light bars respectively; calculating 3D coordinates of the light bar point in a 2D area array camera coordinate system, and calculating three ellipse center position coordinates; directly acquiring 3D coordinates of three sets of laser light bars in the 3D sensor coordinate system from the line laser 3D sensor, and calculating three ellipse center position coordinates; and calculating a conversion distance between two coordinate systems.

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OpenTechnical Publication OT-2026-000000161, “2D area array camera-line laser 3D sensor joint calibration method and device,” published September 15, 2026 at 19:02:33 UTC, https://opentechnical.org/p/OT-2026-000000161.

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