Storage medium, recognition method, and recognition apparatus

• US 9,934,429 B2
• Filed: 03/29/2016
• Issued: 04/03/2018
• Est. Priority Date: 04/01/2015
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Higashi, Hideto, Matsuda, Yugo, Tsuyuki, Yasuhiro, Kataoka, Masahiro
• Primary Examiner(s): Grant, II, Jerome
• Application Number:
  US15/083,736
• Publication Number:
  US 20160292501A1
• Time in Patent Office: 735 Days
• Field of Search: 382187
• CPC Class Codes: G06F 18/22 Matching criteria, e.g. proximity measures
• CPC Class Codes: G06T 7/60 Analysis of geometric attributes
• CPC Class Codes: G06T 7/73 using feature-based methods
• CPC Class Codes: G06V 30/10 Character recognition
• CPC Class Codes: G06V 30/1423 the instrument generating sequences of position coordinates corresponding to handwriting preprocessing or recognising digital ink G06V30/32
• CPC Class Codes: G06V 30/158 using character size, text spacings or pitch estimation
• CPC Class Codes: G06V 30/36 Matching; Classification

Abstract

A non-transitory computer-readable storage medium stores a recognition program that causes a computer to execute a process. The process includes recognizing a plurality of characters from handwritten characters in input handwritten data; setting reference positions of a specific handwritten character and an adjacent handwritten character included in the handwritten characters based on recognition results of the recognized characters, the specific handwritten character and the adjacent handwritten character corresponding to a specific character and an adjacent character included in the recognized characters, respectively, the adjacent character being located adjacent to the specific character; determining whether a space is present between the specific character and the adjacent character based on the reference positions; and generating space information indicating a result of the determining.

Claims

1. A non-transitory computer-readable storage medium storing therein a recognition program that causes a computer to execute a process comprising:

recognizing a plurality of characters from handwritten characters in input handwritten data;

setting reference positions of a specific handwritten character and an adjacent handwritten character included in the handwritten characters based on recognition results of the recognized characters, the specific handwritten character and the adjacent handwritten character corresponding to a specific character and an adjacent character included in the recognized characters, respectively, the adjacent character being located adjacent to the specific character;

determining whether a space is present between the specific character and the adjacent character based on the reference positions; and

generating space information indicating a result of the determining,

wherein each of the reference positions is a position of a vertical stroke in or a position of a central axis of a corresponding one of the specific handwritten character and the adjacent handwritten character.

2. The storage medium as claimed in claim 1, the process further comprising:

determining a character string in the handwritten data based on the recognition results and the space information.

3. The storage medium as claimed in claim 1, the process further comprising:

comparing a partial character string between a first space and a second space determined to be present with words stored in a dictionary database; and

determining whether the second space succeeding the partial character string is actually present based on a result of the comparing.

4. The storage medium as claimed in claim 1, the process further comprising:

obtaining widths of frames surrounding the respective handwritten characters; and

calculating an average of the widths of the frames and an average of distances between the frames,

wherein the space is determined to be present between the specific character and the adjacent character when a distance between the reference positions of the specific handwritten character and the adjacent handwritten character is greater than or equal to the average of the widths of the frames and greater than or equal to the average of distances between the frames.

5. The storage medium as claimed in claim 1, wherein when one of the specific handwritten character and the adjacent handwritten character includes no vertical stroke, the position of the central axis of the one of the specific handwritten character and the adjacent handwritten character is set as the reference position of the one of the specific handwritten character and the adjacent handwritten character.

6. The storage medium as claimed in claim 1, wherein when multiple vertical strokes are extracted from each of the specific handwritten character and the adjacent handwritten character, a position of one of the vertical strokes of the specific handwritten character closest to the adjacent handwritten character is set as the reference position of the specific handwritten character, and a position of one of the vertical strokes of the adjacent handwritten character closest to the specific handwritten character is set as the reference position of the adjacent handwritten character.

7. The storage medium as claimed in claim 5, wherein the central axis of the one of the specific handwritten character and the adjacent handwritten character passes through a center of a width of a frame surrounding the one of the specific handwritten character and the adjacent handwritten character.

8. A method performed by a computer, the method comprising:

recognizing a plurality of characters from handwritten characters in input handwritten data;

setting reference positions of a specific handwritten character and an adjacent handwritten character included in the handwritten characters based on recognition results of the recognized characters, the specific handwritten character and the adjacent handwritten character corresponding to a specific character and an adjacent character included in the recognized characters, respectively, the adjacent character being located adjacent to the specific character;

determining whether a space is present between the specific character and the adjacent character based on the reference positions; and

generating space information indicating a result of the determining,

wherein each of the reference positions is a position of a vertical stroke in or a position of a central axis of a corresponding one of the specific handwritten character and the adjacent handwritten character.

9. A recognition apparatus, comprising:

a processor that executes a process including

recognizing a plurality of characters from handwritten characters in input handwritten data;

setting reference positions of a specific handwritten character and an adjacent handwritten character included in the handwritten characters based on recognition results of the recognized characters, the specific handwritten character and the adjacent handwritten character corresponding to a specific character and an adjacent character included in the recognized characters, respectively, the adjacent character being located adjacent to the specific character;

determining whether a space is present between the specific character and the adjacent character based on the reference positions; and

generating space information indicating a result of the determining,

wherein each of the reference positions is a position of a vertical stroke in or a position of a central axis of a corresponding one of the specific handwritten character and the adjacent handwritten character.