Method of identifying pattern training need during verification of recognized text

Patent metadata

Field	Value
Publication number	US-9613299-B2
Application number	US-201414567548-A
Country	US
Kind code	B2
Filing date	Dec 11, 2014
Priority date	Jan 21, 2014
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

Methods and systems for performing character recognition of a document image include analyzing verification performed by a user on a recognized text obtained by character recognition of a document image, identifying analogous changes of a first incorrect character for a first correct character, and prompting the user to initiate a training of a recognition pattern based on the identified analogous changes.

First claim

The invention claimed is:

1. A computer-implemented method for text analysis, comprising:
analyzing verification performed by a user on a recognized text obtained by character recognition of a document image,
wherein the verification comprises changing an incorrect character identified by the user for a correct character identified by the user;

identifying analogous changes of a first incorrect character for a first correct character; and
initiating a training of a recognition pattern based on the identified analogous changes,
wherein the recognition pattern is a pattern used in character recognition of the document image to generate the recognized text.

2. The computer-implemented method of claim 1 , wherein:
the identifying analogous changes comprises
tracking a number of analogous changes of the first incorrect character for the first correct character during the verification, and
determining that the number of analogous changes of the first incorrect character for the first correct character has reached a predetermined threshold, and
the initiating of the training of the recognition pattern is based on the determining that the number of analogous changes has reached the predetermined threshold.

3. The computer-implemented method of claim 1 , wherein the initiating the training of the recognition pattern comprises presenting the user with an option to initiate the training.

4. The computer-implemented method of claim 1 , wherein the initiating the training of the recognition pattern is automatic.

5. The computer-implemented method of claim 1 , further comprising
repeating character recognition of the document image based on the trained recognition pattern.

6. The computer-implemented method of claim 1 , further comprising
repeating character recognition of an unverified portion of the document image based on the trained recognition pattern.

7. The method of claim 1 , wherein identifying analogous changes of a first incorrect character for a first correct character comprises automatically tracking analogous changes during verification of recognition results.

8. Computer storage media encoded with one or more computer programs, the one or more computer programs comprising instructions that when executed by a data processing apparatus cause the data processing apparatus to perform operations comprising:
analyzing verification performed by a user on a recognized text obtained by character recognition of a document image,
wherein the verification comprises changing an incorrect character identified by the user for a correct character identified by the user;

identifying analogous changes of a first incorrect character for a first correct character; and
initiating a training of a recognition pattern based on the identified analogous changes, wherein the recognition pattern is a pattern used in character recognition of the document image to generate the recognized text.

9. The computer storage media of claim 8 , wherein:
the identifying analogous changes comprises
tracking a number of analogous changes of the first incorrect character for the first correct character during the verification, and
determining that the number of analogous changes of the first incorrect character for the first correct character has reached a predetermined threshold, and
the initiating of the training of the recognition pattern is based the determining that the number of analogous changes has reached the predetermined threshold.

10. The computer storage media of claim 8 , wherein the initiating the training of the recognition pattern comprises presenting the user with an option to initiate the training.

11. The computer storage media of claim 8 , wherein the initiating the training of the recognition pattern is automatic.

12. The computer storage media of claim 8 , further comprising
repeating character recognition of the document image based on the trained recognition pattern.

13. The computer storage media of claim 8 , further comprising
repeating character recognition of an unverified portion of the document image based on the trained recognition pattern.

14. A system, comprising:
a computing device; and
a computer-readable medium coupled to the computing device and having instructions stored thereon which, when executed by the computing device, cause the computing device to perform operations comprising:
analyzing verification performed by a user on a recognized text obtained by character recognition of a document image,
wherein the verification comprises changing an incorrect character identified by the user for a correct character identified by the user;

identifying analogous changes of a first incorrect character for a first correct character; and
initiating a training of a recognition pattern based on the identified analogous changes,
wherein the recognition pattern is a pattern used in character recognition of the document image to generate the recognized text.

15. The system of claim 14 wherein:
the identifying analogous changes comprises
tracking a number of analogous changes of the first incorrect character for the first correct character during the verification, and
determining that the number of analogous changes of the first incorrect character for the first correct character has reached a predetermined threshold, and
the initiating of the training of the recognition pattern is based the determining that the number of analogous changes has reached the predetermined threshold.

16. The system of claim 14 , wherein the initiating the training of the recognition pattern comprises presenting the user with an option to initiate the training.

17. The system of claim 14 , wherein the initiating the training of the recognition pattern is automatic.

18. The system of claim 14 , further comprising
repeating character recognition of the document image based on the trained recognition pattern.

19. The system of claim 14 , further comprising
repeating character recognition of an unverified portion of the document image based on the trained recognition pattern.

Assignees

• Abbyy Dev Llc

Inventors

• Krivosheev Michael
• Kolodkina Natalia
• Makushev Alexander

Classifications

• G06V30/19167 Primary

  Active pattern learning · CPC title

• G06V30/19173

  Classification techniques · CPC title

• G06F18/2178

  based on feedback of a supervisor · CPC title

• G06F18/24137

  Distances to cluster centroïds · CPC title

• G06K9/6263 Primary

  Physics · mapped topic