Structural light parameter calibration device and method based on front-coating plane mirror
US10690492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2018 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Mar 22, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/2513
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention discloses a structural light parameter calibration device and method based on a front-coating plane mirror. The calibration device includes a camera, a laser, a front-coating plane mirror, a flat glass target, and white printing paper. The white printing paper receives a laser beam and presents a real light strip image, and the camera captures the real light stripe image and a mirror light stripe image on the front-coating plane mirror. Feature points are used to determine a rotation matrix, a translation vector, and a vanishing point for the image. The present invention achieves better quality of light stripe and better extraction accuracy, provides feature points with micron-level positional accuracy and more calibration points, and features higher calibration accuracy and more stable calibration results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.