CA1062810A - Regional context maximum likelihood ocr error correction apparatus - Google Patents
Regional context maximum likelihood ocr error correction apparatusInfo
- Publication number
- CA1062810A CA1062810A CA221,755A CA221755A CA1062810A CA 1062810 A CA1062810 A CA 1062810A CA 221755 A CA221755 A CA 221755A CA 1062810 A CA1062810 A CA 1062810A
- Authority
- CA
- Canada
- Prior art keywords
- character
- word
- error
- probability
- storage means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000012937 correction Methods 0.000 title description 14
- 238000007476 Maximum Likelihood Methods 0.000 title description 9
- 238000006467 substitution reaction Methods 0.000 claims abstract description 63
- 238000012545 processing Methods 0.000 claims abstract description 31
- 239000000047 product Substances 0.000 claims 34
- 238000012015 optical character recognition Methods 0.000 abstract description 167
- 230000011218 segmentation Effects 0.000 abstract description 61
- 238000004364 calculation method Methods 0.000 abstract description 7
- 210000004027 cell Anatomy 0.000 description 138
- 239000011159 matrix material Substances 0.000 description 33
- 238000004458 analytical method Methods 0.000 description 23
- 238000012546 transfer Methods 0.000 description 21
- 238000011156 evaluation Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 230000014509 gene expression Effects 0.000 description 9
- 101100453996 Rattus norvegicus Klk2 gene Proteins 0.000 description 4
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- 230000007423 decrease Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000000556 factor analysis Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 210000000352 storage cell Anatomy 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 101100289061 Drosophila melanogaster lili gene Proteins 0.000 description 1
- 235000008247 Echinochloa frumentacea Nutrition 0.000 description 1
- 244000187656 Eucalyptus cornuta Species 0.000 description 1
- 108010076282 Factor IX Proteins 0.000 description 1
- 108010054218 Factor VIII Proteins 0.000 description 1
- 102000001690 Factor VIII Human genes 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 241001481828 Glyptocephalus cynoglossus Species 0.000 description 1
- 102220483782 Myb/SANT-like DNA-binding domain-containing protein 1_A21D_mutation Human genes 0.000 description 1
- 102100026933 Myelin-associated neurite-outgrowth inhibitor Human genes 0.000 description 1
- 240000008881 Oenanthe javanica Species 0.000 description 1
- 240000004072 Panicum sumatrense Species 0.000 description 1
- 241000677647 Proba Species 0.000 description 1
- 244000180577 Sambucus australis Species 0.000 description 1
- 235000018734 Sambucus australis Nutrition 0.000 description 1
- 241000011102 Thera Species 0.000 description 1
- 241000112708 Vates Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 230000000063 preceeding effect Effects 0.000 description 1
- GABUSZPTCJGKGB-UHFFFAOYSA-M sodium;4-(4-chloro-2-methylphenoxy)butanoate Chemical compound [Na+].CC1=CC(Cl)=CC=C1OCCCC([O-])=O GABUSZPTCJGKGB-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/20—Natural language analysis
- G06F40/232—Orthographic correction, e.g. spell checking or vowelisation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Character Discrimination (AREA)
- Machine Translation (AREA)
- Document Processing Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45982074A | 1974-04-10 | 1974-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1062810A true CA1062810A (en) | 1979-09-18 |
Family
ID=23826267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA221,755A Expired CA1062810A (en) | 1974-04-10 | 1975-03-10 | Regional context maximum likelihood ocr error correction apparatus |
Country Status (8)
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4201881A (en) * | 1979-03-28 | 1980-05-06 | Wisconsin Alumni Research Foundation | 24,24-Difluoro-1α,25-dihydroxycholecalciferol |
| JPS6055866B2 (ja) * | 1983-05-09 | 1985-12-06 | 株式会社日立製作所 | 文字認識装置 |
| JPS6274181A (ja) * | 1985-09-27 | 1987-04-04 | Sony Corp | 文字認識装置 |
| JPS6297081A (ja) * | 1986-10-08 | 1987-05-06 | Hitachi Ltd | 文字認識装置 |
| JPH01167469U (US20020128544A1-20020912-P00008.png) * | 1988-05-14 | 1989-11-24 | ||
| JPH01176171U (US20020128544A1-20020912-P00008.png) * | 1988-06-03 | 1989-12-15 | ||
| GB2289969A (en) * | 1994-05-24 | 1995-12-06 | Ibm | Character segmentation |
-
1974
- 1974-12-05 FR FR7441665A patent/FR2267590B1/fr not_active Expired
- 1974-12-16 GB GB5420074A patent/GB1454148A/en not_active Expired
- 1974-12-21 DE DE2460757A patent/DE2460757C2/de not_active Expired
- 1974-12-27 JP JP14913674A patent/JPS5521384B2/ja not_active Expired
-
1975
- 1975-01-14 BE BE152362A patent/BE824366A/xx not_active IP Right Cessation
- 1975-02-27 IT IT20692/75A patent/IT1033223B/it active
- 1975-03-10 CA CA221,755A patent/CA1062810A/en not_active Expired
- 1975-04-03 NL NL7503946A patent/NL7503946A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5521384B2 (US20020128544A1-20020912-P00008.png) | 1980-06-09 |
| FR2267590B1 (US20020128544A1-20020912-P00008.png) | 1977-05-20 |
| DE2460757C2 (de) | 1983-08-18 |
| IT1033223B (it) | 1979-07-10 |
| DE2460757A1 (de) | 1975-10-23 |
| BE824366A (fr) | 1975-05-02 |
| JPS50137037A (US20020128544A1-20020912-P00008.png) | 1975-10-30 |
| NL7503946A (nl) | 1975-10-14 |
| FR2267590A1 (US20020128544A1-20020912-P00008.png) | 1975-11-07 |
| GB1454148A (en) | 1976-10-27 |
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