External parameter calibration method and system
By using a circular hole calibration plate to calibrate solid-state radar and mechanical radar in the autonomous driving system, the problem of low accuracy of external parameter calibration is solved, and the accuracy of radar splicing and the reliability of the perception module are improved.
Patent Information
- Application Number
- CN202210237098.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-03-11
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2042-03-11
AI Technical Summary
In the field of autonomous driving, the external parameter calibration accuracy of solid-state radar and mechanical radar is low, resulting in insufficient scene coverage when the two radars are spliced together, affecting the performance and reliability of the perception module.
When the carrier is stationary, solid-state radar and mechanical radar are used to scan the circular hole calibration plate in the common view area respectively to obtain point cloud data, perform plane segmentation and circular hole edge detection, determine the center position of the measured circular hole, and calibrate the circular hole position data according to the actual circular hole center position to solve the external parameters.
It improves the accuracy of external parameter calibration of solid-state radar and mechanical radar, enhances the reliability of multi-laser fusion, and ensures wider scene coverage and higher perception accuracy.