Lens calibration method for digital imaging apparatus
US12190543B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2020 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Nov 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10056
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for calibrating a digital imaging apparatus by placing an object of known dimensions in a camera field of view, creating a digital image of the object, measuring the object dimensions in the digital image, creating a mathematical relationship between the object dimensions and the measured object dimensions in the digital image, creating n additional digital images each image having a distinct camera zoom level; measuring the position of a plurality of locations on the object for the n additional images, calculating a value for said locations in the n additional digital images, linking corresponding locations in the n additional images to create a calibration metric for a plurality of zoom values and calibrating any lens by comparing the zoom position of the lens in a camera with the calibration value. The present invention reduces calibration time and generates images which can be quickly verified by the operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.