US6178263B1
Expired / Lapsed
US
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Method of estimating at least one run-based font attribute of a group of characters
Assignee: Xerox Corp
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Filing: 1999-10-12
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Granted: 2001-01-23
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Expires: 2019-10-12
Abstract
Abstract Font attributes of characters or letters are estimated by an optical character recognition system using character, run or stroke-based techniques with or without character identification information.
Inventors
- 👤 Zhigang Fan
- 👤 Robert Cooperman
- 👤 Robert Shuchatowitz
- 👤 Lucy Hadden
- 👤 Emil Rainero
- 👤 Frederick Roberts, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:48
CPC Classifications
G; G06; G06V; G06V30/00; G06V30/10; G06V30/24; G06V30/242; G06V30/244; G06V30/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A method for estimating at least one run-based font attribute of a group of characters of an input image independently of any character identification information of the group of characters, comprising: forming a plurality of single-connected and well-aligned-connected runs from bit maps of the characters of the group of characters; and estimating at least one slant attribute of a font of the group of characters based on at least two runs of a plurality of runs, wherein the estimated at least one run-based font attribute comprises the estimated at least one slant attribute.
Claim 2
Independent Claim
93 words
A method for estimating at least one run-based font attribute of a group of characters of an input image independently of any character identification information of the group of characters, comprising: forming a plurality of single-connected and well-aligned-connected runs from bit maps of the characters of the group of characters; and estimating at least one slant attribute of a font of the group of characters based on at least two runs of a plurality of runs, wherein the estimated at least one run-based font attribute comprises the estimated at least one slant attribute.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-01-23 | 2004-07-24 | 2005-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-23 | 2008-07-24 | 2009-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-23 | 2012-07-24 | 2013-01-23 | $7700.00 | Window Closed / Lapsed |