Lidar-camera online calibration method and system based on reflectance map
US12339405B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2024 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Aug 19, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A laser radar-camera online calibration method and system based on a reflectance map includes: data preprocessing, generating data that meets the input of the neural network part; inputting the preprocessed data into the trained neural network; the neural network will output the edge point features of the reference image and the reflectance map, that is, the reference image and the reflectance map descriptor; by comparing the similarity of the reference image and the reflectance map descriptor, find the matching relationship between the reference image feature and the reflectance map feature point; use the mapping relationship between the reflectance map and the 3D point cloud to find the matching relationship between the reference image and the point cloud; use the EPnP algorithm to estimate the transformation matrix from the given 2D-3D point pair to complete the calibration process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.