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Systems And Methods For Recognizing Alphanumeric Characters

Abstract: Systems and methods for recognizing alphanumeric characters are described. In one implementation, the method for recognizing alphanumeric characters comprises receiving features for each of the alphanumeric characters to be recognized. The features comprises at least one of number of lines, length of lines, number of arcs, length of arcs, number of loops, length of loops, number of junctions, junction positions, or total length of lines, arcs, and loops. Further, the method comprises creating a vector for each of the alphanumeric characters based on the features. Further, the method comprises comparing the vector with a reference vector obtained from a reference database. Further, the method comprises determining an array of probabilities for each of the alphanumeric characters based on the comparison. Further, the method comprises recognizing the alphanumeric characters based on the array of probabilities. FIG. 2

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
22 September 2014
Publication Number
41/2014
Publication Type
INA
Invention Field
COMPUTER SCIENCE
Status
Email
ipr@akshipassociates.com
Parent Application
Patent Number
Legal Status
Grant Date
2022-03-15
Renewal Date

Applicants

WIPRO LIMITED
Doddakannelli, Sarjapur Road, Bangalore 560035, Karnataka, India.

Inventors

1. RAGHAVENDRA HOSABETTU
#546, Gurukrupa, 17th Main SBM Colony, Near VSS School, Bangalore – 560050, Karnataka, India
2. ANIL KUMAR LENKA
#88, Bharat Housing Cooperative Society Layout, Virat Nagar, Bommanahalli, Bangalore – 560068, Karnataka, India.

Specification

CLIAMS:
We claim:
1. A computer-implemented method for recognizing alphanumeric characters, the method comprising:
receiving features for each of the alphanumeric characters to be recognized, wherein the features comprises at least one of number of lines, length of lines, number of arcs, length of arcs, number of loops, length of loops, number of junctions, junction positions, or total length of lines, arcs, and loops;
creating, by a processor, a vector for each of the alphanumeric characters based on the features;
comparing, by the processor, the vector with a reference vector obtained from a reference database;
determining, by the processor, an array of probabilities for each of the alphanumeric characters based on the comparison; and
recognizing, by the processor, the alphanumeric characters based on the array of probabilities.

2. The method of claim 1, wherein recognizing the alphanumeric characters further comprises evaluating whether probability for an alphanumeric character is greater than a predefined threshold value.

3. The method of claim 1, wherein the reference vector indicates at least one of number of lines, length of lines, number of arcs, length of arcs, number of loops, length of loops, number of junctions, junction positions, or total length of lines, arcs, and loops for a known alphanumeric character.

4. The method of claim 1, wherein the reference vector is unique for each of alphanumeric codes present in the reference database.
5. The method of claim 1, wherein the array of probabilities indicate degree of similarity between the alphanumeric character recognized and known alphanumeric characters.

6. The method of claim 1, wherein the receiving further comprises:
capturing an image of the alphanumeric characters to be recognized;
pre-processing the image to obtain a skeletonized image for feature extraction; and
extracting the features from the skeletonized image.

7. A recognition system for recognizing alphanumeric characters, the recognition system comprising:
a processor operatively coupled to a memory device, wherein the processor is configured to execute instructions stored in the memory device to perform operations comprising:
receiving features for each of the alphanumeric characters to be recognized, wherein the features comprises at least one of number of lines, length of lines, number of arcs, length of arcs, number of loops, length of loops, number of junctions, junction positions, or total length of lines, arcs, and loops;
creating a vector for each of the alphanumeric characters based on the features;
comparing the vector with a reference vector obtained from a reference database;
determining an array of probabilities for each of the alphanumeric characters based on the comparison; and
recognizing the alphanumeric characters based on the array of probabilities.
8. The system of claim 7, wherein the recognizing the alphanumeric characters further comprises evaluating whether probability for an alphanumeric character is greater than a predefined threshold value.

9. The system of claim 7, wherein the reference vector indicates at least one of number of lines, length of lines, number of arcs, length of arcs, number of loops, length of loops, number of junctions, junction positions, or total length of lines, arcs, and loops for a known alphanumeric character.

10. The system of claim 7, wherein the reference vector is unique for each of alphanumeric codes present in the reference database.

11. The system of claim 7, wherein the array of probabilities indicate degree of similarity between the alphanumeric character recognized and known alphanumeric characters.
12. The system of claim 7, wherein the receiving further comprises:
capturing an image of the alphanumeric characters to be recognized;
pre-processing the image to obtain a skeletonized image for feature extraction; and
extracting the features from the skeletonized image.

13. A non-transitory, computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform operations comprising:
receiving features for each of the alphanumeric characters to be recognized, wherein the features comprises at least one of number of lines, length of lines, number of arcs, length of arcs, number of loops, length of loops, number of junctions, junction positions, or total length of lines, arcs, and loops;
creating a vector for each of the alphanumeric characters based on the features;
comparing the vector with a reference vector obtained from a reference database;
determining an array of probabilities for each of the alphanumeric characters based on the comparison; and

recognizing the alphanumeric characters based on the array of probabilities.

Dated this 20th day of September, 2014

SHWETH A CHIMALGI
OF K & S PARTNERS
AGENT FOR THE APPLICANTS
,TagSPECI:FIELD OF THE INVENTION
The present subject matter relates to character recognition, and, particularly but not exclusively, to systems and methods for recognizing alphanumeric characters.

Documents

Orders

Section Controller Decision Date

Application Documents

# Name Date
1 4586-CHE-2014 FORM-9 22-09-2014.pdf 2014-09-22
1 4586-CHE-2014-RELEVANT DOCUMENTS [20-09-2023(online)].pdf 2023-09-20
2 4586-CHE-2014 FORM-18 22-09-2014.pdf 2014-09-22
2 4586-CHE-2014-IntimationOfGrant15-03-2022.pdf 2022-03-15
3 4586-CHE-2014-Request For Certified Copy-Online(25-09-2014).pdf 2014-09-25
3 4586-CHE-2014-PatentCertificate15-03-2022.pdf 2022-03-15
4 IP28328-spec.pdf 2014-09-26
4 4586-CHE-2014-PETITION UNDER RULE 137 [02-03-2022(online)].pdf 2022-03-02
5 IP28328-fig.pdf 2014-09-26
5 4586-CHE-2014-Written submissions and relevant documents [02-03-2022(online)].pdf 2022-03-02
6 Form 5 - IP28328.pdf 2014-09-26
6 4586-CHE-2014-FORM-26 [10-02-2022(online)].pdf 2022-02-10
7 Form 3 - IP28328.pdf 2014-09-26
7 4586-CHE-2014-AMENDED DOCUMENTS [07-02-2022(online)].pdf 2022-02-07
8 abstract4586-CHE-2014.jpg 2014-09-26
8 4586-CHE-2014-Correspondence to notify the Controller [07-02-2022(online)].pdf 2022-02-07
9 4586-CHE-2014-FORM 13 [07-02-2022(online)].pdf 2022-02-07
9 4586CHE2014_CertifiedCopyRequest.pdf 2014-09-26
10 4586-CHE-2014 POWER OF ATTORNEY 16-12-2014.pdf 2014-12-16
10 4586-CHE-2014-POA [07-02-2022(online)].pdf 2022-02-07
11 4586-CHE-2014 FORM-1 16-12-2014.pdf 2014-12-16
11 4586-CHE-2014-US(14)-HearingNotice-(HearingDate-16-02-2022).pdf 2022-01-24
12 4586-CHE-2014 CORRESPONDENCE OTHERS 16-12-2014.pdf 2014-12-16
12 4586-CHE-2014-ABSTRACT [10-12-2019(online)].pdf 2019-12-10
13 4586-CHE-2014-CLAIMS [10-12-2019(online)].pdf 2019-12-10
13 4586-CHE-2014-FER.pdf 2019-06-11
14 4586-CHE-2014-CORRESPONDENCE [10-12-2019(online)].pdf 2019-12-10
14 4586-CHE-2014-FORM 3 [09-12-2019(online)].pdf 2019-12-09
15 4586-CHE-2014-DRAWING [10-12-2019(online)].pdf 2019-12-10
15 4586-CHE-2014-OTHERS [10-12-2019(online)].pdf 2019-12-10
16 4586-CHE-2014-FER_SER_REPLY [10-12-2019(online)].pdf 2019-12-10
17 4586-CHE-2014-OTHERS [10-12-2019(online)].pdf 2019-12-10
17 4586-CHE-2014-DRAWING [10-12-2019(online)].pdf 2019-12-10
18 4586-CHE-2014-FORM 3 [09-12-2019(online)].pdf 2019-12-09
18 4586-CHE-2014-CORRESPONDENCE [10-12-2019(online)].pdf 2019-12-10
19 4586-CHE-2014-CLAIMS [10-12-2019(online)].pdf 2019-12-10
19 4586-CHE-2014-FER.pdf 2019-06-11
20 4586-CHE-2014 CORRESPONDENCE OTHERS 16-12-2014.pdf 2014-12-16
20 4586-CHE-2014-ABSTRACT [10-12-2019(online)].pdf 2019-12-10
21 4586-CHE-2014 FORM-1 16-12-2014.pdf 2014-12-16
21 4586-CHE-2014-US(14)-HearingNotice-(HearingDate-16-02-2022).pdf 2022-01-24
22 4586-CHE-2014 POWER OF ATTORNEY 16-12-2014.pdf 2014-12-16
22 4586-CHE-2014-POA [07-02-2022(online)].pdf 2022-02-07
23 4586-CHE-2014-FORM 13 [07-02-2022(online)].pdf 2022-02-07
23 4586CHE2014_CertifiedCopyRequest.pdf 2014-09-26
24 abstract4586-CHE-2014.jpg 2014-09-26
24 4586-CHE-2014-Correspondence to notify the Controller [07-02-2022(online)].pdf 2022-02-07
25 Form 3 - IP28328.pdf 2014-09-26
25 4586-CHE-2014-AMENDED DOCUMENTS [07-02-2022(online)].pdf 2022-02-07
26 Form 5 - IP28328.pdf 2014-09-26
26 4586-CHE-2014-FORM-26 [10-02-2022(online)].pdf 2022-02-10
27 IP28328-fig.pdf 2014-09-26
27 4586-CHE-2014-Written submissions and relevant documents [02-03-2022(online)].pdf 2022-03-02
28 IP28328-spec.pdf 2014-09-26
28 4586-CHE-2014-PETITION UNDER RULE 137 [02-03-2022(online)].pdf 2022-03-02
29 4586-CHE-2014-Request For Certified Copy-Online(25-09-2014).pdf 2014-09-25
29 4586-CHE-2014-PatentCertificate15-03-2022.pdf 2022-03-15
30 4586-CHE-2014-IntimationOfGrant15-03-2022.pdf 2022-03-15
30 4586-CHE-2014 FORM-18 22-09-2014.pdf 2014-09-22
31 4586-CHE-2014 FORM-9 22-09-2014.pdf 2014-09-22
31 4586-CHE-2014-RELEVANT DOCUMENTS [20-09-2023(online)].pdf 2023-09-20

Search Strategy

1 2019-06-0717-50-54_07-06-2019.pdf

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