Single-pass imaging and optical mark recognition scanning
US10176411B2 · kind B2 · utility
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10References
31Claims
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Key dates
| Filing date | May 26, 2016 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Sep 17, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Performing optical mark recognition (OMR) scanning includes receiving a substrate to be scanned, the substrate having one or more colors visible to a human eye and bearing user-made marks; moving the substrate and a light sensor relative to each other such that the substrate moves past the light sensor a single time; during the relative movement of the substrate, scanning the substrate using multiple colors of light to simultaneously generate both (a) image data representing a visual appearance of the substrate, and (b) OMR data corresponding to respective locations of the user-made marks on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.