Invention Grant
- Patent Title: Real-time sensor calibration and calibration verification based on detected objects
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Application No.: US17038927Application Date: 2020-09-30
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Publication No.: US12032102B2Publication Date: 2024-07-09
- Inventor: Cyrus F. Abari
- Applicant: Pony AI Inc.
- Applicant Address: KY Grand Cayman
- Assignee: Pony AI Inc.
- Current Assignee: Pony AI Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Sheppard, Mullin, Richter & Hampton LLP
- Agent Xin Xie
- Main IPC: G01S7/497
- IPC: G01S7/497 ; G01S17/86 ; G01S17/89 ; G01S17/931

Abstract:
Improved calibration of a vehicle sensor based on static objects detected within an environment being traversed by the vehicle is disclosed. A first sensor such as a LiDAR can be calibrated to a global coordinate system via a second pre-calibrated sensor such as a GPS IMU. Static objects present in the environment are detected such as signage. Point cloud data representative of the static objects are captured by the first sensor and a first transformation matrix for performing a transformation from a local coordinate system of the first sensor to a local coordinate system of the second sensor is iteratively redetermined until a desired calibration accuracy is achieved. Transformation to the global coordinate system is then achieved via application of the first transformation matrix followed by application of a second known transformation matrix to transition from the local coordinate system of the second pre-calibrated sensor to the global coordinate system.
Public/Granted literature
- US20220066006A1 REAL-TIME SENSOR CALIBRATION AND CALIBRATION VERIFICATION BASED ON DETECTED OBJECTS Public/Granted day:2022-03-03
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