Invention Grant
- Patent Title: Calibration of sensor position offsets based on rotation and translation vectors for matched trajectories
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Application No.: US17856690Application Date: 2022-07-01
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Publication No.: US12111180B2Publication Date: 2024-10-08
- Inventor: Brian Alexander Paden
- Applicant: Summer Robotics, Inc.
- Applicant Address: US CA Campbell
- Assignee: Summer Robotics, Inc.
- Current Assignee: Summer Robotics, Inc.
- Current Assignee Address: US CA Campbell
- Agency: Branch Partners PLLC
- Agent John W. Branch
- Main IPC: G01C25/00
- IPC: G01C25/00 ; G01C3/02

Abstract:
Embodiments are directed to calibrating multi-view triangulation systems that perceive surfaces and objects based on reflections of one or more scanned laser beams that are continuously sensed by two or more sensors. In addition to sampling and triangulating points from a spline formed by an unbroken line trajectory of a laser beam, the calibration system samples and triangulates a corresponding velocity vector. Iterative reduction is performed on velocity vectors instead of points or splines. The velocity vector includes directions and magnitudes along a trajectory of a scanning laser beam which are used to determine the actual velocities. Translation and rotation vectors are based on the velocity vectors for matching trajectories determined for two or more sensors having offset physical positions, which are used to calibrate sensor offset errors associated with the matching trajectories provided to a modeling engine.
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