JPS58191078A - Display system for recognition result of character - Google Patents

Abstract

PURPOSE:To aviod the fear for rereading or the reduction of efficiency, by comparing the reading factor to compare this measured value with the reference value which is set previously and then displaying whether this reference value is satisifed or not. CONSTITUTION:When the characters on a slip are read at a character recognizing part 1, the character codes corresponding to the read characters are written to a memory 2. At the same time, a rejection code is written to the memory 2 for an unreadable character. When the moemry 2 receives character codes equivalent to a sheet of slip, an MPU 3 writes the number of read characters and the number of unreadable characters to a character number recording part 4 and then calculates the reading factor to write it to a register 5. An operator writes a proper reading factor to a register 6. The value of the register 5 is compared with the value of the register 6 through a comparator 8. Then an information signal is fed to a display part 9 to show whether or not the reading factor of the register 5 satisfies the proper value.

Description

Detailed Description of the Invention (1) Technical Field of the Invention The present invention relates to an optical character reading device (OptlcalChar).
Aeter Reader (hereinafter referred to as OCR) relates to a character recognition result display method that measures the ratio of the number of characters read to the number of characters to be read (referred to as reading rate) and displays whether the measured value exceeds a standard. be.

(2) Background of the technology OCR is a device that optically reads characters written on documents such as slips, as part of the mechanization of office processing. The characters to be read can be both handwritten and printed.

An example of the former is the description of a postal code, and an example of the latter is a document for collecting taxes or water charges that requires multiple processing by citizens at public institutions.

The problem here is that it doesn't matter if we eliminate all unreadable characters. This is easily understood when reading handwritten characters.
In addition, even in the case of printed characters, there may be cases where the printed characters become partially unclear due to wear.

In addition, it may be impossible to read due to operator error, format specification error, hardware failure, etc.

Therefore, when processing a large number of invoices, if the ability to read a certain character occurs, it is necessary to stop the operation of the machine one by one and correct it, or even if there are some unreadable characters, a certain amount of invoices cannot be There is a problem of continuing batch processing and whether documents containing unreadable characters should be corrected later. The former method may stagnate the work flow and reduce efficiency, while the latter method
There is a risk that a large number of vouchers will need to be corrected after some reading has been completed. For this reason, there has been a search for a method that is efficient and involves less risk of mass correction.

(3) Conventional technology and problems When using normal OCR, a large number of slips, for example 500
A stack of documents is placed in a hopper, and the documents are automatically taken in one by one. Then, the read characters are assigned their character codes, and the unreadable characters are assigned their transfer codes.

Therefore, two methods have been conventionally adopted to deal with the situation when an unreadable character is encountered, and one can be easily selected by key operation. One is a method called batch processing, in which even if an unreadable character is encountered while processing a certain amount of invoices, it is written to a floppy disk without displaying an unreadable character (reject display) or making corrections, or This method continues operations such as sending information to a computer.

Although this method is more efficient, if there is a failure to read due to operator error, it will become clear that there are a large number of unreadable documents after normal reading operations are completed. In such a case, there is a great possibility that unexpected time will be wasted as the user will have to read again after correcting the erroneous operation.

Another method is called immediate corrective reading or simultaneous processing, in which the operator constantly monitors for readability, and when the readability occurs, the operator inputs it using a key. O This method does not pose the risk of generating a large number of unreadable slips later, but the efficiency decreases because the operator must constantly monitor and perform key operations each time.

The conventional technology has the above-mentioned problems. (4) Purpose of the Invention The present invention has the above-mentioned two drawbacks, such as the danger of reading and correction and the decrease in efficiency, due to its simple configuration. (5) Structure of the Invention The structure of the present invention is as described in the claims.When reading characters written on a form with an optical character reading device,
The ratio of the number of characters read to the number of characters to be read (
A character recognition result display method characterized by measuring the reading rate (referred to as reading rate), comparing this measured value with a preset reasonable reading rate (reference value), and displaying whether or not this standard value is met. It is.

(6) Examples of the invention The figure shows the configuration of an embodiment of the present invention.

In the figure, number 1 is the OCR character recognition section, 2 is the storage section (called memory), 3 is the MPU, 4 is the character number recording section, 5 and 6 are registers, 7 is the keyboard, 8 is the comparator, and 9 is the display Department,
10 is a floppy disk.

The operation will be explained below.

When a character on a slip is read by the character recognition unit 1, a character code corresponding to that character is written into the memory 2 according to the format.On the other hand, if an unreadable character is encountered, a code is assigned to the corresponding character. Kobi was also written down to 2 for the first time. When memory 2 has received the character codes and reject codes for 41 pages of Den 1,
The PU 3 writes the number of read characters and the number of unreadable characters into the character number recording section 4, calculates the reading rate from these values, and writes the value into the register 5. On the other hand, the operator writes a valid reading rate value from the keyboard 7 to the register 6 via the MPU 3. The values of registers 5 and 6 are compared by a comparator 8, and an information signal indicating whether the reading rate value of register 5 satisfies the appropriate reading rate value is displayed on the display! sent to.

Display section! The display format is a lamp display format that lights up a green lamp when the reading rate satisfies a reasonable reading rate, and a red lamp when it does not, and a display C.
Various methods are possible, such as displaying the characters OK or No on RT.

Generally, in OCR, it is difficult to eliminate unreadability, and this is a problem that always occurs.

However, this is not to say that the rate at which this reading ability occurs is completely random; rather, the format of the slip is fixed, the group of people filling out the slip, the procedures of the workplace, etc. It is known that if the processing operation is continued after , the value will statistically settle to a constant value. In other words, if you are working with normal attentiveness, even if reading becomes impossible, this is unavoidable and is not abnormal.

Therefore, the present invention focuses on this point, sets a reasonable reading rate obtained empirically and statistically, and if the reading rate during OCR operation exceeds this reasonable reading rate, the work of filling out slips and
The batch processing is continued assuming that there is no abnormality in the operation and operation of the CR. On the other hand, if the reading rate during operation falls below the appropriate reading rate, it is assumed that some abnormality exists, and the operation of the OCR is temporarily stopped and an inspection is performed.

In this embodiment, the value of the appropriate reading rate is entered by the operator from the keyboard 7, and whether or not the reading rate in operation exceeds the appropriate reading rate can be easily recognized from the display unit 9. There is.

(7) Effects of the Invention According to the present invention, the reading rate is measured for each slip or for each other category at all times while the OCR is in operation, and the reading rate is measured if the reading rate satisfies a predetermined reasonable reading rate. It is possible to effectively judge whether or not it is necessary to stop the OCR operation and inspect it.

Because of this, it is possible to eliminate the operator supervision and loss of efficiency as in serial processing, and on the other hand, as in batch processing, it is possible to detect a large number of unreadable documents after processing a large number of documents. This makes it possible to eliminate waste that would lead to redoing work. It should be noted that correcting unreadable problems that are within a reasonable reading rate after batch processing has almost no negative effect on work efficiency.

[Brief explanation of drawings]

The figure is a block diagram showing the configuration of an embodiment of the present invention. 1...Character recognition section, 2...--Storage section (memory), 5...---MPU, 4...----
・Character number recording section, 5.6...Register, 7...
−・−・・Keyboard, 8・・−・−・・Comparator, 9・
・−・−・・Display section, 10・・−・−・・Floppy disk.

Claims (1)

[Claims] An optical character reader that reads characters on a form includes a recording section that records the number of characters read and the number of unreadable characters, and a ratio of the number of characters read to the number of characters that should be read based on the values recorded in the recording section. The computer comprises a calculation unit, a register for recording the calculation result, a register for recording a reference value set by an operator, and a comparator for comparing the values of the two registers, and the calculation result satisfies the reference value. A character recognition result display method characterized by displaying on a display unit whether or not the recognition result is correct.