Character recognizing apparatus and method of controlling the same

• US 5,982,928 A
• Filed: 06/19/1995
• Issued: 11/09/1999
• Est. Priority Date: 06/21/1994
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Matsubayashi, Kasuhiro, Tatsumi, Eisaku, Harada, Takashi, Mori, Shigeki, Nagasaki, Katsuhiko, Fukuda, Ryoji, Sunakawa, Shinichi, Shimada, Kazutoshi
• Primary Examiner(s): CHANG, JON CARLTON
• Application Number:
  US08/492,419
• Time in Patent Office: 1,604 Days
• Field of Search: 382/187, 382/186, 382/101, 382/137, 382/185, 382/309, 382/311, 382/188, 382/189, 382/229
• US Class Current: 382/187
• CPC Class Codes: G06V 10/75 Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries

Abstract

A system consisting of a plurality of terminals connected through communication is sometimes used to acquire information input from the terminals to a host terminal and edit/arrange the information in the host terminal when information is exchanged by inputting handwritten characters from the terminals. In this case, the host terminal must recognize the handwritten characters and thereafter process the characters to arrange the handwritten character information. Each terminal can perform character recognition by a unique character recognizing method. The terminals also individually prepare dictionaries for recognition. The host terminal returns the acquired handwritten character information to the terminals and causes the terminals to perform character recognition. Alternatively, the host terminal concentratively manages the character recognizing methods and dictionaries of all the terminals and performs character recognition.

Claims

1. A character recognizing apparatus, which is connectable with plural terminals, for recognizing a handwritten character from a user using one of the terminals, comprising:

input means for inputting handwritten character information together with attribute information representing a user inputting the handwritten character information;

storage means for storing the handwritten character information and the attribute information;

a plurality of handwritten character recognition means for recognizing the handwritten character information input by said input means, each of the plurality of handwritten character recognition means has a personal dictionary corresponding to a user to recognize the handwritten character information inputted by the user;

determination means for determining which user has input the handwritten character information in accordance with the attribute information stored by said storage means;

selection means for selecting a handwritten character string to be recognized from the handwritten character information inputted by said input means; and

recognition control means for selecting one of the plurality of handwritten character recognition means having a personal dictionary corresponding to the user determined by said determination means and controlling the selected character recognition means so as to recognize the handwritten character string selected by said selection means using the selected personal dictionary.

2. The apparatus according to claim 1, wherein one of the terminals comprises means for managing the input handwritten information.

3. The apparatus according to claim 2, wherein said plurality of character recognition means are distributed to the terminals, and

wherein said recognition control means selects one of the plurality of handwritten character recognition means and controls the selected recognition means so as to recognize the handwritten character information by the character recognition means distributed to a terminal through which the handwritten character information to be recognized is inputted.

4. The apparatus according to claim 1, wherein one of the terminals is a recognition server having said plurality of character recognition means, each one of said plurality of character recognition means corresponding to one of the terminals.

5. The apparatus according to claim 1, wherein said plurality of character recognition means includes a character recognition unit for performing character recognition by a predetermined method, and a plurality of personal dictionaries according to features of the handwritten characters, which are referred to by said character recognition unit.

6. The apparatus according to claim 1, further comprising edit means for editing the handwritten characters input by said input means or the characters recognized by said plurality of character recognition means.

7. A method of controlling a character recognizing apparatus, the apparatus comprising a plurality of handwritten character recognition means, each of which has a personal dictionary corresponding to a user, for recognizing handwritten character information inputted by a user using one of a plurality of terminals, the method comprising:

a storing step of storing the handwritten character information and attribute information in storage;

a determining step of determining who has input handwritten character information in accordance with attribute information, associated with the user, stored in the storage;

a selecting step of selecting a handwritten character string to be recognized from the handwritten character informations; and

a controlling step of selecting one of the plurality of handwritten character recognition means having a personal dictionary corresponding to the user determined in said determining step and controlling the selected character recognition means so as to recognize the handwritten character string selected in said selecting step using the selected personal dictionary.

8. The method according to claim 7, wherein one of the terminals manages the handwritten information input using the terminals.

9. The method according to claim 8, wherein said plurality of character recognition means are distributed to the terminals and one of the plurality of recognition means is selected and controlled in said controlling step so as to recognize the handwritten character information using the character recognition means distributed to the terminal through which the handwritten character information to be recognized was inputted.

10. The method according to claim 7, wherein one of the terminals is a recognition server having said plurality of character recognition means, each one of said plurality of character recognition means corresponding to one of the terminals.

11. The method according to claim 7, wherein said plurality of character recognition means include a character recognition unit for performing character recognition by a predetermined method, and a plurality of personal dictionaries according to features of the handwritten characters, which are referred to by said character recognition unit.

12. A character recognizing system for recognizing a handwritten character information inputted by a user having one of plurality of terminals connected to a network, the system comprising:

storage means for storing handwritten character information and attribute information;

a plurality of handwritten character recognition means for recognizing the handwritten character information, each of the plurality of handwritten character recognition means has a personal dictionary corresponding to a user to recognize the handwritten character information inputted by the user;

determination means for determining which user has input the handwritten character information in accordance with the attribute information stored in said storage means;

selection means for selecting a handwritten character string to be recognized from the handwritten character information inputted by said input means; and

recognition control means for selecting one of the plurality of handwritten character recognition means having a personal dictionary corresponding to the user determined by said determination means and controlling the selected character recognition means so as to recognize the handwritten character string selected by said selection means using the selected personal dictionary.

13. The system according to claim 12, wherein one of the terminals comprises means for managing handwritten information input using the terminals.

14. The system according to claim 13, wherein said plurality of character recognition means are distributed to the terminals and said recognition control means selects one of the plurality of handwritten character recognition means and controls the selected recognition means so as to recognize the handwritten character information using the character recognition means distributed to the terminal using which the handwritten character information to be recognized was inputted.

15. The system according to claim 12, wherein one of the terminals is a recognition server having said plurality of character recognition means, each one of said plurality of character recognition means corresponding to one of the terminals.

16. The system according to claim 12, wherein said plurality of character recognition means include a character recognition unit for performing character recognition by a predetermined method, and a plurality of personal dictionaries according to features of the handwritten characters, which are referred to by said character recognition unit.

17. The system according to claim 12, further comprising edit means for editing the handwritten characters input by said input means or the characters recognized by said plurality of character recognition means.