Method and apparatus for text detection
US6778700B2 · kind B2 · utility
14Cited by
28References
19Claims
0Family size
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Key dates
| Filing date | Mar 14, 2001 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Apr 10, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/413
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A text detection technique comprises local ramp detection, identification of intensity troughs (candidate text strokes), determination of stroke width, preliminary detection of text based on contrast and stroke width, and a consistency check.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.