Signal processors and methods for estimating geometric transformations of images for digital data extraction
US12014441B2 · kind B2 · utility
1Cited by
11References
17Claims
0Family size
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Key dates
| Filing date | Sep 20, 2021 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Mar 25, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Signal processing devices and methods estimate a geometric transform of an image. One method measures correlation between a transformed reference signal component and an image, updates, based on the measured correlation that is below a threshold, coordinates of the reference signal component to a location within a neighborhood around the coordinates of the transformed reference signal component; determines a new geometric transform that transforms the reference signal components to updated coordinates; and applies the new geometric transform to extract encoded digital data from the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.