JPS60217487A - Character recognition device - Google Patents

Abstract

PURPOSE:To lighten the burden imposed on a writer by preparing an input pattern such as an abbreviation from as a special dictionary pattern with respect to the prescribed character string and by outputting the prescribed character string as a recognition result of the input pattern concerned. CONSTITUTION:A character pattern inputted with a pen 2 on a tablet device 1 is segmented by a detection and segmenting part 3 at every one character, and its features are collated with those of a recognition dictionary 5 in a recognition part 4, whereby a character recognition is carried out. In said dictionary 5 an additionary registration of a dictionary pattern can be performed. This means that an operation is set to a dictionary registration mode, a character string to be registered is inputted as a character code, etc., through a keyboard, and after this a registration dictionary pattern (abbreviated form, etc.) with respect to the character string is inputted through the tablet device. A written pattern of the input registration dictionary parttern is feature-extracted, and additionally registered as a special dictionary pattern. With the aid of the special dictionary pattern (abbreviated form, etc.) the desired character string can be efficiently inputted.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a character recognition device that recognizes characters by comparing an input cover pattern with a dictionary pattern recorded in a dictionary. The present invention relates to a character recognition device capable of achieving the following.

[Technical background of the invention and its problems]

With the development of information processing technology, the amount of data handled in calculations is increasing. Therefore, how to efficiently input various data into a computer is a major issue.

As an answer to this, in recent years OCR, which optically reads characters and symbols printed or handwritten on forms, recognizes the characters, and inputs data, and character strokes that are input by hand via a coordinate input device such as a tablet. Various character recognition devices have been developed that recognize characters from information in real time and input data.

By the way, this type of character recognition device basically cuts out an input character pattern character by character, detects the characteristics of that character pattern, and compares it with the characteristics of a standard dictionary pattern registered in advance in a recognition dictionary. From the matching results, the recognition results for the above character patterns are configured as shown in (q).For this reason, it is not possible to input abbreviations and abbreviations that are often used in drafting manuscripts and writing memos. There was a problem.Inevitably, characters and symbols were required to be written in a formal font, which not only placed a heavy burden on the scribe, but also increased the time required for inputting character data and caused input errors. There was a problem that caused an increase in the amount of water.

[Purpose of the invention]

The present invention has been made in consideration of these circumstances, and its purpose is to be able to input character data efficiently, and to simplify the input of character data to reduce the burden on the scribe. An object of the present invention is to provide a highly practical character recognition device that can reduce the amount of work required.

[Summary of the invention]

The present invention creates a specified input cover pattern as a special dictionary pattern for a specified predetermined character or character string, and further registers this special dictionary pattern in a recognition dictionary in association with the predetermined character or character string. , when an input cover pattern corresponding to the special dictionary pattern is given, the predetermined character or character string corresponding to the special dictionary pattern is output as a recognition result for the input cover pattern, so that the input cover pattern is expressed with a special symbol, etc. This enables efficient input of characters or character strings.

〔Effect of the invention〕

Thus, according to the present invention, when inputting character data, by registering frequently appearing characters or character strings, especially sentences with many character stories, etc. in the dictionary as special symbol patterns, the input of this special symbol pattern allows It becomes possible to efficiently input the frequently occurring characters or character strings, especially sentences with a large number of characters, between short poems. Therefore, character data can be input using abbreviations that are often used in drafts of manuscripts, etc., and the burden on the scribe can be significantly reduced.

(Embodiment of the Invention) Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an embodiment device. This embodiment device detects a character/symbol pattern written on the coordinate plane of a tablet device 1 using a pen 2 as time-series coordinate data according to the first line, and extracts its characteristics. This is to recognize the input character/symbol pattern mentioned above.

The character/symbol pattern information input as time-series coordinate data from the tablet device 1 is guided to the cutter 3 and subjected to predetermined preprocessing, and then cut out character by character. The above preprocessing is performed, for example, by removing noise components from the written stroke data, or by normalizing the size of each input character/symbol pattern.

After that, regarding the input cover pattern that has been subjected to the above pretreatment,
For example, sample points of each writing stroke are extracted as feature information to obtain feature data representing the above-mentioned cover pattern. The recognition unit 4 compares the characteristics of the input cover pattern determined in this way with the characteristics of the standard dictionary pattern registered in advance in the recognition dictionary 5, and calculates the degree of similarity between them to find the most suitable one for the input cover pattern. A similar standard dictionary pattern is detected, and this standard dictionary pattern is accepted as the character recognition result of the input cover pattern.

It should be noted that the recognition processing method in the recognition unit 4 may be appropriately selected from various conventionally known methods, and it goes without saying that the configuration of the recognition dictionary 5 is also determined according to the recognition method. do not have.

By the way, although each standard dictionary pattern of a plurality of characters to be recognized is registered in advance in the recognition dictionary 5, new dictionary patterns can be additionally registered in this recognition dictionary 5. The dictionary pattern that is additionally registered in the recognition dictionary 5 is created by the dictionary creation section 6, and the characteristic data of the input pattern input through the tablet device 1 when setting the dictionary registration mode is used as a new dictionary pattern. This is done as follows.

That is, when setting the dictionary registration mode, first, a character or character string to be registered in the dictionary is inputted as a character code or the like via, for example, a keyboard device (not shown). Note that the above characters or character strings may be input via the tablet device 1, or characters or character strings that have already been input may be selectively designated and provided. Thereafter, a registered dictionary pattern for the designated character or character string is input via the tablet device 1.

This registered dictionary pattern is, for example, as shown in Figure 2.
For the character string “telephone”, its abbreviation [teJJ
It is given as a cursive pattern, or as a special symbol pattern for the character string "online handwritten character recognition device". For the registered dictionary pattern input in this way, for example, as shown in Fig. 3, the characteristics of the writing stroke are extracted as nine sample coordinate position data, and this is used as a new dictionary pattern (special dictionary pattern). .

By additionally registering this special dictionary pattern in the H1 dictionary 5 in association with the specified character or character string, dictionary registration for the specified character or character string is completed.

In this way, when such a special dictionary pattern is additionally registered in the recognition dictionary 5, when an input cover pattern corresponding to the special dictionary pattern is inputted later via the tablet device 1, it is recognized by the &Σ recognition process described above. The unit 4 recognizes that the entered cover pattern is the additionally registered special dictionary pattern. After obtaining this recognition result, the recognition unit 4
outputs the predetermined character or character string stored in correspondence with the special dictionary pattern as a recognition result for the input cover pattern.

Thus, according to the present device, it is possible to input a predetermined character or character string extremely easily by effectively utilizing the special dictionary pattern. In other words, it becomes possible to efficiently input a desired character or character string by using abbreviations and symbols that are used on a daily basis, and the burden on the scribe can be significantly reduced. Further, by using this special dictionary pattern, it becomes possible to easily input sentences with a large number of characters, and effects such as speeding up character data input can also be achieved.

Note that the present invention is not limited to the embodiments described above. In the embodiment, a character pattern is input by hand through a tablet device, but the present invention can also be applied to a character recognition device that optically inputs a character pattern written on a form etc. and performs character recognition processing. can do.

Furthermore, the method of character recognition, the characteristic information of the input pattern used in this character recognition, etc. can be variously modified according to the device specifications. In short, the present invention can be implemented with various modifications without departing from the gist thereof.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of a specified character string to be registered in a dictionary and a special dictionary pattern registered in the dictionary for this character string, and FIG. The figure is a diagram showing an example of extraction of special dictionary pattern data for an input cover pattern. DESCRIPTION OF SYMBOLS 1...Talev 1-device, 2... Pen, 3... Examination part, 4... Recognition part, 5... Recognition dictionary, 6... Dictionary creation part. Applicant's agent Patent attorney Takehiko Suzue

Claims (3)

[Claims] (1) In a character recognition device that compares an input character pattern with a dictionary pattern registered in advance in a recognition dictionary and obtains a recognition result for the above-mentioned cover pattern, a specified input cover pattern is used as a specified character. or a means for creating a special dictionary pattern for a character string, and additionally registering this special dictionary pattern in the recognition dictionary in association with the predetermined character or character string, and an input cover pattern corresponding to the special dictionary pattern. and means for outputting the predetermined character or character string corresponding to the special dictionary pattern as a recognition result for the cover pattern. (2) A patent claim in which a special dictionary pattern that is set in association with a predetermined character or character string is registered in a recognition dictionary by adding the predetermined character or character string as attribute data of the special dictionary pattern. The character recognition device according to item 1. (3) Character recognition according to claim 1, wherein the input cover pattern is input as time-series coordinate data indicating the writing strokes of the character/symbol pattern inputted in the basket via a coordinate input device. Device.