Method and control system for verifying and updating camera calibration for robot control
US10399227B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2019 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Mar 29, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30208
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A robot control system and a method for camera calibration verification is presented. The robot control system is configured to perform a first camera calibration, and to control a robot arm to move a verification symbol to a reference location. The robot control system further receives, from a camera, a reference image of the verification symbol, and determines a reference image coordinate for the verification symbol. The robot control system further controls the robot arm to move the verification symbol to the reference location again during an idle period, receives an additional image of the verification symbol, and determines a verification image coordinate. The robot control system determines a deviation parameter value based the reference image coordinate and the verification image coordinate, and whether the deviation parameter value exceeds a defined threshold, and performs a second camera calibration if the threshold is exceeded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.