System and method for calibrating a plurality of 3D sensors with respect to a motion conveyance
US10757394B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2015 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Aug 9, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention provides a system and method for concurrently (i.e. non-serially) calibrating a plurality of 3D sensors to provide therefrom a single FOV in a vision system that allows for straightforward setup using a series of relatively straightforward steps that are supported by an intuitive graphical user interface (GUI). The system and method requires minimal input significant data about the imaged scene or calibration object used to calibrate the sensors, thereby effecting a substantially “automatic” calibration procedure. 3D features of a stable object, typically employing a plurality of 3D subobjects are first measured by one of the plurality of image sensors, and then the feature measurements are used in a calibration in which each of the 3D sensors images a discrete one of the subobjects, resolves features thereon and computes a common coordinate space between the plurality of 3D sensors. Laser displacement sensors and a conveyor/motion stage can be employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.