Method and system for determining motion based on difference image correlation
US7247836B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | May 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0317
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An imager captures successive images of an object. One image is then subtracted from another image to generate difference images. Each difference image is then correlated with itself or with one of the images used to generate the difference image to determine the relative motion between the imager an the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.