Structural vibration monitoring method based on computer vision and motion compensation
US11593952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2021 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Nov 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30232
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A structural vibration monitoring method based on computer vision and motion compensation provided in the present disclosure adopts a dual-camera system for self-motion compensation. The dual-camera system consists of a primary camera and a secondary camera rigidly connected to each other. The primary camera directly measures a structure displacement. This method inevitably includes an error generated due to motion of the primary camera. Meanwhile, the secondary camera measures displacements of translation and rotation, so as to estimate a measurement error caused by the motion of the primary camera. Then, with the displacement directly measured by the main camera minus the measurement error, a corrected structure displacement is obtained, thereby truthfully and accurately monitoring vibrations of a bridge structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.