Method for calibrating linear vibration and angular vibration based on monocular vision
US11754595B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 20, 2021 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Dec 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P21/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for calibrating linear vibration and angular vibration based on monocular vision. A motion sequence image of a feature mark is acquired by an industrial camera, and an output signal of a linear and angular accelerometer is acquired by a data acquisition card, where the feature mark and the linear and angular accelerometer are fixed on a work table. An exciting acceleration of the linear and angular accelerometer is measured by a monocular vision method integrating a camera calibration method and a sub-pixel edge extraction method based on line segment detection. The exciting acceleration and the output signal are fitted by a sine approximation method, respectively, and corresponding fitted peaks are obtained. A sensitivity of the linear and angular accelerometer is obtained according to the fitted peaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.