Automated detection and trimming of an ambiguous contour of a document in an image
US10719937B2 · kind B2 · utility
3Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Dec 22, 2017 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Apr 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/413
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for detecting document contours in a digital image. An example method may involve: receiving an image comprising one or more documents and detecting a set of lines in the image; identifying a plurality of intersection points corresponding to the set of lines; determining a vanishing point based on the plurality of intersection points; generating a candidate polygon based on the set of lines; evaluating the candidate polygon based on a parameter associated with the vanishing point; and indicating the candidate polygon represents a contour of one of the one or more documents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.