JPH08101892A - Character recognition device and dictionary registration method - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose is to register handwritten characters intended by the user in the user dictionary, always output a correct recognition result, and to reduce the time and effort for registering the dictionary as much as possible. [Structure] After storing the coordinate information for one character input via the coordinate input device 1 in the coordinate data buffer 2a, character recognition processing is performed by referring to the basic dictionary 41 and the user dictionary 42, and the character recognition processing is performed according to the recognition result. And a plurality of recognition candidates are displayed on the display device 3 in order of priority. Here, when the second and subsequent candidates are selected from among the recognition candidates, the selection candidates are stored in the selection candidate buffer 2c, and after confirming the dictionary registration instruction from the user, the coordinate data buffer 2a and the selection candidates are confirmed. Buffer 2c
The information stored in is also registered in the user dictionary 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character recognition apparatus used in a handwriting input type document preparation apparatus, etc. And a method for registering a dictionary.

[0002]

2. Description of the Related Art A handwriting input device in which a coordinate input device and a display device are laminated and integrated makes it possible to perform an input operation as if writing a character or a figure on paper, and directly to the place where input is desired. Since it can be instructed, it has come to be used in various fields.

However, there is still room for improvement in the current handwritten character recognition technology. In particular, the recognition dictionary to be referred to when performing character recognition is usually only a basic dictionary prepared in advance, but in this case, there are cases in which characters written in a user-specific manner cannot be recognized. Therefore, a user dictionary registration function that allows a user to create a recognition dictionary is drawing attention. This is a function of registering handwritten characters input by the user in a recognition dictionary called a user dictionary. There is also a method in which a pattern of a handwritten character that cannot be recognized as a result of character recognition is held, and the pattern is used later to perform user registration.

[0004]

As described above, conventionally, there has been a function of registering handwritten characters input by a user in a recognition dictionary called a user dictionary. However, with such a user dictionary registration function, it is necessary to input the coordinate information of the character, the character code, etc. again at the time of registration, and the registration work is troublesome.

There is also a method of registering a user by using a pattern of unrecognizable handwritten characters, but if the character cannot be recognized by character recognition, there is a problem that the character cannot be registered in the user dictionary.

The present invention has been made in consideration of such circumstances, and it is possible to register a handwritten character intended by a user in a user dictionary and always output a correct recognition result. An object is to provide a character recognition device and a dictionary registration method that can be reduced as much as possible.

[0007]

[Means for Solving the Problems]

(1) The character recognition device of the present invention is based on input means for inputting coordinate information, dictionary storage means for storing dictionary information for character recognition, and the dictionary information stored in the dictionary storage means. A character recognizing means for recognizing the coordinate information for one character input by the input means, a candidate output means for outputting a plurality of pieces of recognition candidate information obtained by the character recognizing order in priority order, and a candidate output means. Candidate selecting means for selecting any of the recognition candidate information output by the above, and when the recognition candidate information selected by this candidate selecting means is the second or later candidate, the recognition candidate information and the input A dictionary registration means for storing coordinate information in the dictionary storage means as dictionary information for recognizing the character is provided.

(2) The character recognition device of the present invention comprises an input means for inputting coordinate information, a dictionary storage means for storing dictionary information for character recognition, and the dictionary information stored in the dictionary storage means. A character recognizing means for recognizing the coordinate information of one character input by the input means based on the above, a candidate output means for outputting the plurality of recognition candidate information obtained by the character recognizing means in order of priority, The candidate selection means for selecting any one of the recognition candidate information output by the candidate output means, the registration instruction means for instructing the dictionary registration, and the recognition candidate information selected by the candidate selection means are second. If it is after the candidate, the recognition candidate information and the input coordinate information are used as dictionary information for recognizing the character according to the dictionary registration instruction by the registration instruction means. Characterized by comprising a dictionary registration means for storing in said dictionary memory means Te.

[0009]

According to the above configuration (1), when a plurality of pieces of recognition candidate information for an input character are output, if the second or subsequent candidate pieces of recognition candidate information are selected, those pieces of recognition candidate information are input. It is registered in the dictionary storage means together with the coordinate information of the character.

According to the above configuration (2), when a plurality of pieces of recognition candidate information for the input character are output, the second and subsequent pieces of recognition candidate information are selected, and then the dictionary registration is instructed. The recognition candidate information is registered in the dictionary storage means together with the coordinate information of the input character.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a character recognition device according to an embodiment of the present invention. This device has a user dictionary registration function, and is composed of a coordinate input device 1, a control device 2 which is the device body, a display device 3, and an external storage device 4.

The coordinate input device 1 comprises, for example, a transparent tablet 1a and a stylus pen 1b as shown in FIG.
It is laminated and integrated on a display device 3 including a liquid crystal display or the like. The transparent tablet 1a and the liquid crystal display have the same coordinate plane, so that the coordinate position on the liquid crystal display can be directly designated by the transparent tablet 1a, and the display information on the liquid crystal display can be visually recognized through the transparent tablet 1a. Is configured.

The control device 2 controls the entire device and includes an input unit 21, a character recognition unit 22, a character recognition result candidate display unit 23, a candidate selection unit 24, a user confirmation unit 25,
User dictionary registration unit 26, input coordinate data buffer 2a,
It is composed of a recognition candidate buffer 2b and a selection candidate buffer 2c.

The display device 3 comprises a liquid crystal display or the like as described above. The external storage device 4 is, for example, a floppy disk device (FDD) or a hard disk device (H
DD) etc., and stores various information necessary for character recognition processing. Here, the basic dictionary 41 and the user dictionary 42 are stored in the external storage device 4. The external storage device 4 may be integrated with the control device 2 as shown in FIG.

In the control device 2, the input unit 21 stores the coordinate information for one character input from the coordinate input device 1 in the coordinate data buffer 2a. The character recognition unit 22 character-recognizes the coordinate information for one character stored in the coordinate data buffer 2a by referring to the basic dictionary 41 and the user dictionary 42, and recognizes the candidate group of the recognition result as the recognition candidate buffer 2b.
To be stored.

The character recognition result candidate display unit 23 outputs the character recognition result candidate group stored in the recognition candidate buffer 2b to the display device 3 in order of priority. When the user selects any one of the candidate groups of the character recognition result, the candidate selection unit 24 stores the selection candidate in the selection candidate buffer 2c when the selection candidate is the second candidate or later.

The user confirmation section 25 makes the user confirm whether or not the information stored in the coordinate data buffer 2a and the selection candidate buffer 2c is registered in the user dictionary 42.
The user dictionary registration unit 26 registers the information stored in the coordinate data buffer 2a and the selection candidate buffer 2c together in the user dictionary 42.

The external storage device 4 stores a basic dictionary 41 and a user dictionary 42. The basic dictionary 41 is referred to when calculating the degree of difference in character recognition. A dictionary pattern prepared in advance at the time of manufacture is registered in the basic dictionary 41. The user dictionary 42 is referred to when calculating the degree of difference in character recognition together with the basic dictionary 41. Unlike the basic dictionary 41, a dictionary pattern created by the user is registered in the user dictionary 42.

Next, the operation of the embodiment will be described. FIG. 3 is a flow chart showing the dictionary registration operation in the same embodiment. First, a character is handwritten and input via the coordinate input device 1 (step a). The coordinate information for one character input at this time is stored in the coordinate data buffer 2a through the input unit 21 of the control device 2 (step b).

The character recognizing unit 22 includes a coordinate data buffer 2
The coordinate information of one character stored in a is recognized by referring to the basic dictionary 41 and the user dictionary 42 in the external storage device 4 (step c), and the candidate group of the character recognition result is recognized as the recognition candidate buffer 2b. (Step d). The character recognition result candidate display unit 23 displays the recognition candidate buffer 2b.
The candidate groups stored in the display device 3 are output in order of priority (step e). Here, when the user selects any one of the candidate groups of the character recognition result (step f), the candidate selecting section 24 It is checked whether or not the selection candidate is the second or later candidate of the character recognition result. If it is the second candidate or later, the selection candidate is stored in the selection candidate buffer 2c (step h).

However, when there is a dictionary registration instruction from the user, the user confirmation unit 25 confirms the registration instruction (step i), and the user dictionary registration unit 26 stores it in the coordinate data buffer 2a and the selection candidate buffer 2c. The registered information is also registered in the user dictionary 41 (step j).

Next, the above steps a to j
The processing flow up to this point will be described using a specific example. FIG.
As shown in, the character input screen is provided with a character input frame 51, recognition result display frames 52 to 54, a registration button 55, and a registration negative button 56. The character input frame 51 is an input frame for inputting handwritten characters. This character input box 51
The handwritten character input to is recognized and the candidate group of the recognition result is displayed in the recognition result display frames 52 to 54. Here, the first candidate in the candidate group is the recognition result display frame 52,
The second candidate is displayed in the recognition result display frame 53, and the third candidate is displayed in the recognition result display frame 54. The recognition result display frames 52 to 54
Of these, after selecting the second and subsequent candidates displayed in the recognition result display frame 53 or 54 and pointing to the registration button 55, the selected candidates become the target of dictionary registration.

Specific examples are shown in FIGS. For example, when the character "mura" is handwritten in the character input frame 51, "bayashi" is displayed in the recognition result display frames 52 to 54,
It is assumed that three candidates of "deny" and "village" are displayed in order of priority. In this case, the recognition result intended by the user is the “village” displayed in the recognition result display frame 54. This recognition result “village” is the third candidate. Therefore, when the registration button 55 is pointed to after selecting this candidate, the coordinate information of the input character (stored in the coordinate data buffer 2a)
Then, the selection candidate information (stored in the selection candidate buffer 2c) is registered in the user dictionary 41 as dictionary information.

The present invention is not limited to the above embodiment. For example, in step i, the user is asked to confirm whether or not to register in the user dictionary 41. For example, before the user confirms, the dictionary registration is completed, and then the user is asked whether or not to delete this dictionary pattern. It may be confirmed. In short, the present invention can be variously modified and used without departing from the scope of the invention.

[0025]

As described above, according to the present invention, when the second and subsequent candidates are selected from among the recognition candidates obtained by the character recognition processing, the selection candidate is selected as the coordinate information of the input character. Since the dictionary is registered in addition to this, it is possible to register a handwritten character intended by the user and always output a correct recognition result. In addition, since it is not necessary to input the coordinate information of a character or the character code again at the time of registration, it is possible to reduce the trouble of dictionary registration.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a character recognition device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an external configuration of the character recognition device.

FIG. 3 is a flowchart showing a dictionary registration operation in the same embodiment.

FIG. 4 is a diagram showing a character input screen according to the embodiment.

FIG. 5 is a diagram showing the dictionary registration operation of FIG. 3 using a specific example.

FIG. 6 is a diagram showing the dictionary registration operation of FIG. 3 above using a specific example.

[Explanation of symbols]

1 ... Coordinate input device, 2 ... Control device, 3 ... Display device, 4 ...
External storage device, 21 ... Input unit, 22 ... Character recognition unit, 23
... Character recognition result candidate display section, 24 ... Candidate selection section, 25 ...
User confirmation unit, 26 ... User dictionary registration unit, 2a ... Coordinate data buffer, 2b ... Recognition candidate buffer, 2c ... Selection candidate buffer, 41 ... Basic dictionary, 42 ... User dictionary.

Claims (4)

[Claims] 1. Input means for inputting coordinate information, dictionary storage means for storing dictionary information for character recognition, and input by the input means based on the dictionary information stored in the dictionary storage means. Character recognition means for recognizing the coordinate information of one character that has been generated, candidate output means for outputting a plurality of recognition candidate information obtained by this character recognition means in order of priority, and each of the above-mentioned each output by this candidate output means. Candidate selection means for selecting any of the recognition candidate information, and when the recognition candidate information selected by this candidate selection means is the second or later candidate, the recognition candidate information and the input coordinate information are set to the character. A character recognition device comprising: dictionary registration means for storing dictionary information for recognition in the dictionary storage means. 2. Input means for inputting coordinate information, dictionary storage means for storing dictionary information for character recognition, and input by the input means based on the dictionary information stored in the dictionary storage means. Character recognition means for recognizing the coordinate information of one character that has been generated, candidate output means for outputting a plurality of recognition candidate information obtained by this character recognition means in order of priority, and each of the above-mentioned each output by this candidate output means. In the case where the candidate selection means for selecting any of the recognition candidate information, the registration instruction means for instructing the dictionary registration, and the recognition candidate information selected by the candidate selection means are the second and subsequent candidates, The recognition candidate information and the input coordinate information are stored in the dictionary storage means as dictionary information for recognizing the character according to a dictionary registration instruction from the registration instruction means. A character recognition device comprising: 3. A dictionary registration method for a character recognition device having dictionary storage means for storing dictionary information for character recognition, wherein input coordinate information for one character is based on the dictionary information stored in the dictionary storage means. Character recognition is performed, and a plurality of recognition candidate information obtained as the character recognition result is output in order of priority. When the recognition candidate information after the second candidate is selected from among the recognition candidate information, the recognition candidate information and A dictionary registration method characterized in that the input coordinate information is stored in the dictionary storage means as dictionary information for recognizing the character. 4. A dictionary registration method of a character recognition device comprising dictionary storage means for storing dictionary information for character recognition, wherein input coordinate information for one character is based on the dictionary information stored in the dictionary storage means. Character recognition is performed, a plurality of pieces of recognition candidate information obtained as the character recognition result are output in order of priority, and when the recognition candidate information after the second candidate is selected from among the recognition candidate information, the dictionary registration instruction is given. Accordingly, the recognition candidate information and the input coordinate information are stored in the dictionary storage means as dictionary information for recognizing the character.