JPH0358182A - Character input device - Google Patents

Abstract

PURPOSE:To improve the correct read rate by automatically additionally registering a word at the time when an operator performs the correcting operation to judge that this word is not registered in a word dictionary. CONSTITUTION:When a form image 1 is inputted, a character recognizing part 2 converts it to a candidate character string 3, and a word collating part 4 outputs a proper candidate word 6 from a word dictionary 5, and a display correcting part 7 displays this word 6 and the candidate character string 3 on a screen, and the operator is prompted to recognition, and the correcting operation is performed in case of error. An input word discriminating part 10 synthesizes a word 11 in accordance with an input character 9 for correction, and a word addition processing part 12 checks whether this word 11 is registered in the word dictionary 5 or not, and the processing part 12 registers this word 11 if it is not registered. Thus, additional registration of words is promoted to improve the recognition efficiency.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a character input device, and in particular has a function to increase the recognition rate by performing word matching processing on character strings recognized by an optical character recognition unit. This article relates to a character input device equipped with a character input device. [Prior Art] Conventionally, in this type of character input device, even if a word to be added to a word dictionary is found while reading and inputting characters, it is not possible to immediately add the word to the word dictionary, and a separately prepared word dictionary is used to update the word dictionary. The operation mode was such that additional registrations were made later using the utility function.

[Problem to be solved by the invention]

In the above-mentioned conventional character input device, if a character is not correctly recognized during reading input, the operator corrects and inputs the correct character from the keyboard, but at this time, the corrected word is additionally registered in the word dictionary. Even if I decide that I want to keep it, I wait until the end of the series of tasks and then add it using the utility function, so the reason why the word matching result is misread is that the word is not registered. In this case, by registering the word, it is possible to increase the success rate for the next similar input, and furthermore, the word that should be additionally registered is the word input at the time of correction. Despite this fact, there is a drawback in that there is no way to instantly register words.

[Means to solve the problem]

The character input device of the present invention is a character input device having a function of automatically correcting erroneously recognized character strings by comparing a character string recognized by an optical character recognition unit with a word dictionary prepared in advance. , an input word determination unit that determines that there is a missing word in the word dictionary at the time when the operator performs the correction operation when an operator intervenes to check and correct the automatically corrected result; The apparatus further includes a word addition registration section that automatically additionally registers the word after that.

〔Example〕

Next, the present invention will be explained using drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. When a form image is input, a character recognition unit 2 operates and converts it into a candidate character string 3. The word matching unit 4 uses this candidate character string 3
is received, and a valid candidate word 6 is output from the word dictionary 5. The display correction unit 7 displays the candidate words 6 and the candidate character strings 3 on the screen, prompts the operator to confirm that the recognition is correct, and if they are incorrect, undergoes a correction operation.

As an example, let's proceed by assuming that candidate character string 3 has the content shown in Figure 2. Due to the function of the word matching section 4,
If the word "Tokyo J" is registered in the word dictionary 5, the first character, second candidate, "Higashi J," and the second character, first candidate, "
The second candidate for the third character, ``To'', is selected, and ``Tokyo'' is output as the candidate word 6. If the operator determines that this is correct, this is output as is from the apparatus as the correction result 8.

Here, if the word "Tokyo" is not registered in the word dictionary 5, the word will not be matched with any combination of candidate character strings 3, and candidate word 6 does not exist, so the first "Tokyo Department" will be displayed as a candidate. When the operator determines that ``Tanku'' is an error in ``Higashi'' and ``Part'' is an error in ``To'' and performs a correction input operation, the following processing is performed as an effect of the present invention. .

First, from the corrected input character 9 at the time of correction, the input word discriminator 1
0 agrees with the word "Tokyo" and this is the word to be added 1
It is passed to the word addition processing unit 12 as 1. Word addition processing unit 1
Step 2 checks whether the word 11 to be added is registered in the word dictionary 5 or not, and if it is not registered, it is registered.

When this series of processes is performed, the word has been automatically added from the operator's perspective, and from now on, when entering a form in which "Tokyo" is written, "Tokyo" will be correctly added. Words will be matched.

In addition, as an application of this example, the word 11 to be added is
An example will also be given in which the words are temporarily stored in the memory unit 13 and the words in the memory unit 13 are registered all at once at the operator's convenience. It should also be noted that at this time, there is a method of registering only the necessary words while checking the words stored in the storage unit 13 again on the screen.

〔Effect of the invention〕

As explained above, the present invention includes an input word discrimination section and a word addition processing section, and by providing the above-mentioned functions,
This has the effect of significantly simplifying the operations involved in word registration for the operator. Furthermore, by encouraging users to register additional words themselves, it has the effect of realizing a so-called learning function that increases the recognition efficiency of the character input device.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a character input device of the present invention, and FIG. 2 is an explanatory diagram showing an example of candidate character strings. 1... Form image, 2... Character recognition section, 3...
Candidate character string, 4... word matching unit, 5... word dictionary,
6... Candidate word, 7... Display correction section, 8... Correction result, 9... Correction input character, 10... Input word discrimination section, 11... Word to be added, 12. . . . word addition processing section, 13 . . . storage section.

Claims (1)

[Scope of Claim] A character input device having a function of automatically correcting erroneously recognized character strings by comparing a character string recognized by an optical character recognition unit with a word dictionary prepared in advance, comprising: an input word determination unit that determines that there is a missing word in the word dictionary at the time when the operator performs the correction operation when an operator intervenes to check and correct the automatically corrected results; 1. A character input device comprising: a word addition registration unit that automatically adds and registers the word.