JPH012182A - optical character reader - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical character reading device, and more particularly to an optical character reading device suitable for displaying reading results on a display for confirmation and correction.

[Conventional technology]

In recent years, optical character reading devices have come to be used as a substitute for keyboards as a means of saving labor in over-the-counter transactions at financial institutions such as banks. That is,
The transaction slip is read by an optical character reader, the reading result is displayed on the display, and the read data is checked for errors. If there is no error, the read data is sent to the center system that has the ledger file. It is used to process transactions.

Here, the method of displaying the reading results on the display is to display the character pattern corresponding to the read/recognized character code and the read image data in parallel inside the shell, and to detect the occurrence of unreadable characters. For example, in the case of JP-A-5
As disclosed in Publication No. 9-32070, the mark "
? ” and set the cursor at that position to reduce the effort required by the operator to search for unreadable characters.

[Problem that the invention seeks to solve]

By the way, in optical character reading devices, in addition to unreadable characters, misrecognition 1, for example, tz 9 and rp, It 7
There are cases where it is recognized as II. As for unreadable characters, even if the operator overlooks them and neglects to correct them, it is possible to check them mechanically and prohibit them from being sent to the center system.
It is difficult to check for misrecognitions mechanically, so in order to execute transactions correctly, it is necessary to carefully check all reading results for the presence of unreadable characters, as well as to ensure that there are no misrecognitions. , which placed a physical and mental burden on operators, and became a bottleneck in speeding up transactions.

The present invention has been made in view of the above circumstances, and its purpose is to reduce the physical and mental burden on operators of conventional optical character reading devices and to speed up counter transactions. The object of the present invention is to provide a character reading device.

[Means for solving problems]

The above-mentioned object of the present invention is to provide an optical character reading device that displays reading recognition results on a display. This is achieved by an optical character reading device characterized in that it is provided with means for evaluating, and means for outputting the evaluation result by the evaluation means when displaying the recognition result on the display.

[Effect]

In the present invention, the degree of similarity between the character code that is the recognition result and the standard character pattern used to identify the character code is output when the recognition result is displayed on the display. This output may simply indicate the evaluation value of the similarity as a numerical value or rank, but if the evaluation value is less than a preset value, the display color is different from the normal display color or brightness. Alternatively, by displaying the characters in terms of brightness, it is possible for the operator to easily visually discover characters that have a low degree of similarity to the standard pattern, that is, characters that may have been misrecognized.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of an optical character reading device that is an embodiment of the present invention. In the figure, 1 is a transaction slip, 2 is an optical scanning unit that performs photoelectric conversion of the transaction slip 1, 3 is an image memory for storing the binarized data after photoelectric conversion, and 4 is 2
a cutting unit that cuts out characters, etc. from the digitized data; 5 is a form format storage unit; 6 is a recognition unit; 7 is a dictionary storage unit;
8 is a control unit, 9 is a display, and 10 is a keyboard.

An outline of the operation of the optical character reading device of this embodiment is as follows.

After the transaction slip 1 is subjected to photoelectric conversion in the optical scanning unit 2, the data is binarized and stored in the image memory 3. The binarized pattern stored in the image memory 3 is used in a cutting section 4 for cutting out characters, etc., to cut out one character, etc. according to the contents of the form format storage section 5, and then sent to the recognition section 6.

Also, the binarized pattern VD cut out by the cutout section 4
is also supplied to the control unit 8 and used as display data of image data on the display 9 during visual verification to be described later.

The recognition unit 6 determines the similarity between the binarized pattern VD supplied from the extraction unit 4 and the standard pattern in the dictionary storage unit 7 according to the character type specified by the contents of the form format storage unit 5. is evaluated, and if the evaluation value is greater than or equal to a predetermined value, the character code CD corresponding to the recognition result and its evaluation value are output to the control section 8. Here, if the above evaluation value K is less than the predetermined value, a pseudo code of IL Q I+ mark is output as an unreadable character and the code of IL Q I + mark is output as an unreadable character, and rOJ is assigned to the evaluation value. Output.

The control unit 8 converts the binary pattern VD supplied from the cutting unit 4 and the character code CD supplied from the recognition unit 6 into one
g collection and display it on the display 9. When editing this display data, the control unit 8 compares and verifies the evaluation value K that is output as a pair with the character code CD with a predetermined value set in advance, and selects the character corresponding to the character code CD that is the recognition result. The pattern is displayed in a display color according to the above matching result. Specifically, the evaluation value K ranges from “0” to rlO
If it is assumed to be output by the J(7)II stage, then K
=ro'' is an unreadable character, and K=rlJ~
A value of "10" is an evaluation value assigned when recognition is possible, although there is a possibility of erroneous recognition.

Here, the predetermined value to be set for comparison and verification may be a value that does not statistically cause error B as long as the evaluation value K is equal to or greater than the predetermined value. For example, if the value of the predetermined value to be compared and matched is set to "4", and the value of the above evaluation value is "4" or more, it will be displayed in green on the display 9, and if the value is less than "4". In this case, the control section 8 performs the processing shown in the flowchart of FIG. 3.

That is, in step 21 of FIG. 3, it is determined whether the evaluation value K is greater than 4, and based on the determination result, the display color of the character code CD that is paired with the evaluation value is determined (steps 22 to 23). .

FIG. 2 shows the optical character reading device of this embodiment.
This is an example in which a transaction slip is read and the result is displayed on the display 9. It is assumed that the contents of the account number column and amount column on the transaction slip 1 are read and recognized and displayed as shown in the figure. Here, displays 12a and 12b are
This is based on the binarized pattern VD supplied from the cutting section 4, and is the character pattern written on the transaction slip 1.

Displays 11a and llb are character patterns obtained from a character generator (not shown) in the control unit 8 that corresponds to the character code CD output as a recognition result from the recognition unit 6. 11a and 12a, and llb and 12b are visually compared to confirm the recognition results.

Here, the evaluation value K of the character 13 in the display 11a in the 1 account number column is "2", and the character 15 in the display 11b in the amount column
If it is an unreadable character and the evaluation value K is "o", then character 13 and character 15 are displayed in red, and the other parts of display 11a and llb are displayed in green. Here, the operator pays attention to the part displayed in red and performs visual verification, character 13 is determined to be It 9 II by referring to character pattern 14, and character ■5 is determined to be It 371 by referring to character pattern 16. In each case, correction input is performed from the keyboard 10.

According to the above embodiment, since characters that may be misrecognized are clearly shown to the operator, the operator does not need to check for misrecognition on the entire recognition result data, which reduces the burden on the operator. , which has the effect of speeding up transactions.

In addition, if there is a red display in the above example, the keyboard 1
It is also possible to set up a method that prohibits transmission to the center system unless a confirmation input is made from 0.

In addition, in the above embodiment, an example was shown in which a color display was used to change the display color according to the evaluation value, but it is also possible to change the brightness using a monochrome display, or use blinking or reverse display. May be used.

〔Effect of the invention〕

As described above, according to the present invention, in an optical character reading device that displays reading recognition results on a display, a character code that is a recognition result and a standard character pattern used to specify the character code can be used. By providing a means for evaluating the degree of similarity between characters and a means for displaying the evaluation result by the evaluation means when displaying the recognition result on the display, the operator's physical This has the remarkable effect of making it possible to realize an optical character reading device that can reduce the financial burden and speed up over-the-counter transactions.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an optical character reading device which is an embodiment of the present invention, FIG. 2 is a diagram showing an example of display of the reading result of a transaction slip by the optical character reading device of the embodiment, and FIG.
The figure is a processing flowchart showing the operation of the embodiment. l: transaction slip, 2: optical scanning unit, 3: image memory, 4:
Cutting section, 5: Form format storage section, 6: Recognition section,
7: Dictionary storage unit, 8: Control unit, 9: Display, lO
: keyboard, K: evaluation value, cD: character coat, 21~
25: Processing step. Patent applicant: Hitachi, Ltd. Tube 2 Upper t: + 12b Figure 3

Claims (1)

[Claims] 1. In an optical character reading device that displays reading recognition results on a display, a means for evaluating the similarity between a character code that is a recognition result and a standard character pattern used to identify the character code, and An optical character reading device comprising: means for outputting evaluation results by the evaluation means when displayed on the display.