Patent US5121222A successfully refreshed from Google Patents.
US5121222A
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Method and apparatus for producing binary picture with detection and retention of plural binary picture blocks having a thin line pattern including an oblique line
Assignee: Individual
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Filing: 1991-08-01
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Granted: 1992-06-09
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Expires: 2011-08-01
Abstract
Abstract Binary picture reducing method and apparatus are disclosed, wherein an original picture is divided for a block of a pattern matrix composed of a predetermined number of picture elements, thereby extracting a plurality of binary picture blocks. When the plurality of binary picture blocks each agree with a predetermined thin line pattern, the binary picture block is detected as a thin line block. The thin line block thus detected is retained on an output picture at a position corresponding to a predetermined reduction ratio.
Inventors
- 👤 Toshiaki Endoh
- 👤 Hisaharu Kato
- 👤 Seiichiro Ejima
- 👤 Yasuhiro Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:29
CPC Classifications
G; G06; G06T; G06T3/00; G06T3/40; G06T3/4007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A binary picture reducing method comprising: a first step of dividing an original picture into blocks each having a pattern matrix composed of a predetermined number of picture elements for extracting a plurality of binary picture blocks; a second step wherein, when individual blocks of the plurality of binary picture blocks each agree with a predetermined thin line pattern including an oblique line, detecting each individual binary picture block as a thin line block; and a third step wherein each thin line block detected is retained on an output picture at a position corresponding to a predetermined reduction ratio.
Claim 2
Dependent Claim
99 words
A binary picture reducing method comprising: a first step of dividing an original picture into blocks each having a pattern matrix composed of a predetermined number of picture elements for extracting a plurality of binary picture blocks; a second step wherein, when individual blocks of the plurality of binary picture blocks each agree with a predetermined thin line pattern including an oblique line, detecting each individual binary picture block as a thin line block; and a third step wherein each thin line block detected is retained on an output picture at a position corresponding to a predetermined reduction ratio.
Claim 3
Dependent Claim
94 words
A binary picture reducing apparatus comprising: blocking means for dividing an original picture into a plurality of blocks each of a pattern matrix composed of a predetermined number of picture elements to extract the blocks as binary picture blocks; decision means for detecting, when the plurality of binary picture blocks each agree with a predetermined thin line pattern including an oblique line, each binary picture block as a thin line block; and retaining means for retaining each thin line block detected on an output picture at a position corresponding to a predetermined reduction ratio.
Claim 4
Dependent Claim
94 words
A binary picture reducing apparatus comprising: blocking means for dividing an original picture into a plurality of blocks each of a pattern matrix composed of a predetermined number of picture elements to extract the blocks as binary picture blocks; decision means for detecting, when the plurality of binary picture blocks each agree with a predetermined thin line pattern including an oblique line, each binary picture block as a thin line block; and retaining means for retaining each thin line block detected on an output picture at a position corresponding to a predetermined reduction ratio.
References Cited (Backward Citations)
US4783838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |