Character recognition system, character recognition program and character recognition method

• US 9,639,970 B2
• Filed: 08/13/2015
• Issued: 05/02/2017
• Est. Priority Date: 02/13/2013
• Status: Active Grant

• Current Assignee: FINDEX Inc.
• Original Assignee: FINDEX Inc.
• Inventors: Aibara, Teruo
• Primary Examiner(s): Brier, Jeffery A
• Application Number:
  US14/826,163
• Publication Number:
  US 20150356764A1
• Time in Patent Office: 628 Days
• CPC Class Codes: G06T 1/60 Memory management
• CPC Class Codes: G06T 11/60 Editing figures and text; Combining figures or text
• CPC Class Codes: G06V 10/267 by performing operations on regions, e.g. growing, shrinking or watersheds
• CPC Class Codes: G06V 30/153 using recognition of characters or words
• CPC Class Codes: G06V 30/224 of printed characters having additional code marks or containing code marks
• CPC Class Codes: G06V 30/245 Font recognition
• CPC Class Codes: G09G 5/39 Control of the bit-mapped memory

Abstract

A character recognition system for recognizing character(s) displayed on display(s) of computer(s). In one embodiment, memory device(s) store recognition dictionaries, and there may be a separate recognition dictionary for each display font and character size combination. Such a recognition dictionary may contain information pertaining to arrangement of constituent dots making up each character of a corresponding display font and character size. A character recognition unit may identify target character(s) displayed on display(s) by searching such recognition dictionary or dictionaries and extracting therefrom character(s) for which information pertaining to arrangement of constituent dots making up extracted character(s) is a perfect match for target character(s) displayed on display(s).

Claims

1. A character recognition system for recognition of at least one first character, of at least one first display font and at least one first character size and having at least one first arrangement of constituent dots making up the at least one first character, displayed on at least one display of at least one computer, the character recognition system comprising:

at least one storage device that stores at least one first recognition dictionary having information pertaining to at least one second arrangement of constituent dots making up at least one second character of at least one second display font and at least one second character size; and

at least one character recognition unit that searches the at least one first recognition dictionary and identifies the at least one first character by performing at least one first comparison to determine whether the at least one first recognition dictionary contains at least one third character for which information pertaining to at least one third arrangement of constituent dots making up the at least one third character is a perfect match for the at least one first arrangement of constituent dots making up the at least one first character displayed at the at least one display.

2. The character recognition system according to claim 1

further comprising at least one font check unit

that carries out screen capture to obtain, from at least one video memory, image data pertaining to the at least one first character displayed at the at least one display, and

that obtains the at least one first display font and the at least one first character size of the at least one first character by performing at least one second comparison to determine whether there is a perfect match with information pertaining to the at least one first arrangement of constituent dots making up the at least one first character;

wherein the at least one character recognition unit carries out screen capture to obtain, from the at least one video memory, image data pertaining to the at least one first character displayed at the display; and

wherein the at least one first recognition dictionary that is searched by the at least one character recognition unit is the at least one first recognition dictionary which corresponds to the at least one first display font and the at least one first character size that were obtained by the font check unit.

3. The character recognition system according to claim 1 further comprising at least one dictionary creation unit that creates the at least one first recognition dictionary by obtaining the information pertaining to the at least one second arrangement of constituent dots making up the at least one second character as the at least one second character of the at least one second display font and the at least one second character size are sequentially displayed by way of at least one video memory.

4. The character recognition system according to claim 2 further comprising at least one dictionary creation unit that creates the at least one first recognition dictionary by obtaining the information pertaining to the at least one second arrangement of constituent dots making up the at least one second character as the at least one second character of the at least one second display font and the at least one second character size are sequentially displayed by way of at least one video memory;

wherein the at least one first recognition dictionary that is created by the at least one dictionary creation unit is the at least one first recognition dictionary which corresponds to the at least one first display font and the at least one first character size that were obtained by the font check unit.

5. The character recognition system according to claim 1 wherein the at least one character recognition unit carries out character recognition by identifying the at least one first display font and the at least one first character size of the at least one first character, and by thereafter searching only the at least one first recognition dictionary which corresponds to the at least one first display font and the at least one first character size that were identified.

6. The character recognition system according to claim 5 wherein the identification of the at least one first display font and the at least one first character size of the at least one first character is carried out by searching at least one second recognition dictionary that is a subset of the at least one first recognition dictionary and that has information pertaining to less characters than the at least one first recognition dictionary.

7. The character recognition system according to claim 6 wherein the at least one second recognition dictionary contains records for substantially all sizes of all fonts installed on the at least one computer but only for check characters.

8. The character recognition system according to claim 6 wherein the at least one second recognition dictionary contains records for not more than five check characters.

9. The character recognition system according to claim 1 wherein

the information pertaining to the at least one first arrangement of constituent dots is information pertaining to positions for arrangement of dots within at least one first rectangular border containing all constituent dots making up the at least one first character;

the information pertaining to the at least one second arrangement of constituent dots is information pertaining to positions for arrangement of dots within at least one second rectangular border containing all constituent dots making up the at least one second character; and

the information pertaining to the at least one third arrangement of constituent dots is information pertaining to positions for arrangement of dots within at least one third rectangular border containing all constituent dots making up the at least one third character.

10. The character recognition system according to claim 9 wherein

the at least one first rectangular border is a smallest rectangular border which contains all constituent dots making up the at least one first character;

the at least one second rectangular border is a smallest rectangular border which contains all constituent dots making up the at least one second character; and

the at least one third rectangular border is a smallest rectangular border which contains all constituent dots making up the at least one third character.

11. The character recognition system according to claim 3 wherein the obtaining of the information pertaining to the at least one second arrangement of constituent dots making up the at least one second character is accomplished by screen capture from the at least one video memory.

12. The character recognition system according to claim 1 wherein the at least one second display font and the at least one second character size within the at least one first recognition dictionary include substantially all sizes of all fonts installed on the at least one computer.

13. The character recognition system according to claim 1 wherein the at least one first recognition dictionary comprises at least one record stored in at least one database.

14. The character recognition system according to claim 13 wherein the at least one record contains information specifying at least one dictionary identifier, the at least one second display font, the at least one second character size, at least one character code, at least one dot arrangement within at least one border, at least one border size, and at least one border position.

15. The character recognition system according to claim 1 wherein the at least one first comparison includes an operation in which at least one third border size of the at least one third character is compared with at least one first border size of the at least one first character.

16. The character recognition system according to claim 1 wherein the at least one first comparison includes an operation in which at least one third border position of the at least one third character is compared with at least one first border position of the at least one first character.

17. A non-transitory computer-readable medium containing at least one character recognition program for causing at least one first character, of at least one first display font and at least one first character size and having at least one first arrangement of constituent dots making up the at least one first character, displayed on at least one display to be recognized by at least one computer, the at least one character recognition program causing the at least one computer to carry out:

recognition dictionary creation in which at least one first recognition dictionary is created which has information pertaining to at least one second arrangement of constituent dots making up at least one second character of at least one second display font and at least one second character size; and

character recognition in which the at least one first recognition dictionary is searched, and the at least one first character is identified by performing at least one first comparison to determine whether the at least one first recognition dictionary contains at least one third character for which information pertaining to at least one third arrangement of constituent dots making up the at least one third character is a perfect match for the at least one first arrangement of constituent dots making up the at least one first character displayed at the at least one display.

18. A non-transitory computer-readable medium according to claim 17 wherein the at least one character recognition program

further causes the at least one computer to carry out font checking in which

screen capture is carried out to obtain, from at least one video memory, image data pertaining to the at least one first character displayed at the at least one display, and

the at least one first display font and the at least one first character size of the at least one first character are obtained by performing at least one second comparison to determine whether there is a perfect match with information pertaining to the at least one first arrangement of constituent dots making up the at least one first character;

wherein the character recognition is such that screen capture is carried out to obtain, from the at least one video memory, image data pertaining to the at least one first character displayed at the display; and

wherein the at least one first recognition dictionary that is searched during the character recognition is the at least one first recognition dictionary which corresponds to the at least one first display font and the at least one first character size that were obtained during the font checking.

19. A character recognition method for recognizing at least one first character, of at least one first display font and at least one first character size and having at least one first arrangement of constituent dots making up the at least one first character, displayed on at least one display of at least one computer, the character recognition method comprising:

recognition dictionary creation in which at least one first recognition dictionary is created which has information pertaining to at least one second arrangement of constituent dots making up at least one second character of at least one second display font and at least one second character size; and

character recognition in which the at least one first recognition dictionary is searched, and the at least one first character is identified by performing at least one first comparison to determine whether the at least one first recognition dictionary contains at least one third character for which information pertaining to at least one third arrangement of constituent dots making up the at least one third character is a perfect match for the at least one first arrangement of constituent dots making up the at least one first character displayed at the at least one display.

20. A character recognition method according to claim 19 further comprising font checking in which

screen capture is carried out to obtain, from at least one video memory, image data pertaining to the at least one first character displayed at the at least one display, and

the at least one first display font and the at least one first character size of the at least one first character are obtained by performing at least one second comparison to determine whether there is a perfect match with information pertaining to the at least one first arrangement of constituent dots making up the at least one first character;

wherein the character recognition is such that screen capture is carried out to obtain, from the at least one video memory, image data pertaining to the at least one first character displayed at the display; and

wherein the at least one first recognition dictionary that is searched during the character recognition is the at least one first recognition dictionary which corresponds to the at least one first display font and the at least one first character size that were obtained during the font checking.