JPH05229180A - Correcting system of font - Google Patents

Abstract

PURPOSE:To improve a recognition rate of an OCR, by correcting a font of a letter to be printed by a printer. CONSTITUTION:A letter printed by a printer mechanism part 13 is recognized by a recognition part 22 and whether or not this recognition result is attained to a fixed recognition rate is decided by a diagnosis program part 31. As a result of this decision, when the recognition result is not attained to the fixed recognition rate, a font correcting program part 32 instructs the printer control part 12 to correct the font. The printer control part 12 corrects the font of a printed letter according to this corrective instructions. Since the font of the printed letter is corrected like this, even in the case where a fresh printing device is introduced, the recognition rate of an OCR can be kept at the fixed recognition rate by a user side and lowering of the recognition rate can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a font correction system equipped with a printing device capable of correcting the font of print characters recognized by OCR.

[0002]

2. Description of the Related Art OCR characters that optically read printed characters and recognize the characters have been available as a device for inputting characters printed on a form to a computer, but in recent years, OCR characters printed and recognized by the OCR are printed. Wire dot printers are widely used as printing devices.

When a wire dot type printing apparatus is manufactured, the printing font built in the printing apparatus is not an individual printing font for each user or each system, but for which OCR
It also comes with a standard print font that is compatible with.
Therefore, the OCR characters printed on the form are printed in accordance with the standard print font built in the printing device. Therefore, in order to improve the input efficiency from the OCR to the computer, the character recognition rate of the OCR is increased. In the OCR
It is a common practice to update the recognition dictionary owned by.

[0004]

However, updating the above-mentioned OCR recognition dictionary requires a great deal of labor and cost, and it is difficult for general users to update the OCR dictionary. When a new printing device is installed in an existing OCR system, it is difficult and impossible to update the OCR dictionary. Therefore, the recognition rate of characters printed by this printing device is the same as that of the printing device that has been used until now. There is a risk that the recognition rate will be lower than that.

Furthermore, when a new OCR is introduced, even if the character font to be printed is constant, each OCR
There is a difference in the recognition rate for each, and there is a risk that the recognition rate will be lower than the previous recognition rate.

The present invention has been made in view of the above circumstances, and provides a font correction system capable of increasing the character recognition rate of OCR by correcting the font of characters printed by a printer. The purpose is to

[0007]

In order to achieve the above object, the present invention provides a font storage means for storing a plurality of fonts for each character to be printed, and a plurality of fonts stored in the font storage means. A selection means for selecting a font to be printed from, a printing mechanism means for printing with the font selected by this selection means, a recognition means for recognizing the font printed by this printing mechanism means, and a recognition result by this recognition means. Determining means for determining whether or not a predetermined recognition rate is reached, and a font selected from the font storing means by the selecting means when it is determined by the determining means that the recognition result does not reach the predetermined recognition rate. And instructing means for instructing reprinting by the printing mechanism means.

[0008]

Since the present invention is constructed as described above, when the judgment means judges the recognition result by the recognition means and the recognition result does not reach the predetermined recognition rate, the selection means prints the characters printed by the printing mechanism means. Even if a new printing device is introduced, the OCR recognition rate can be maintained at a predetermined recognition rate and the recognition rate can be prevented from lowering even if a new printing device is introduced by correcting the font of the above-mentioned by the instruction of the instruction means. it can.

[0009]

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

FIG. 1 is a block diagram showing the configuration of a font correction system according to an embodiment of the present invention. As shown in FIG. 1, this system is composed of, for example, a wire-dot type printer and prints characters in a predetermined font. Printer 1 that prints on forms, OCR2 that optically recognizes the characters of the font that is printed by this printer 2, and instructs printer 1 to change or correct the print font based on the recognition rate recognized by this OCR2 Consists of host computer 3.

The printer 1 is composed of a readable and writable non-volatile storage device, and makes a plurality of font information and fonts for each character to be printed thicker or thinner,
Alternatively, it controls the printing of the font storage unit 11, printer 1 that stores multiple processing information such as enlargement / reduction, and receives the test data print instruction and correction request instruction output from host computer 3, A printer control unit 12 that selects instructed information from font information and processing information stored in the storage unit 11, and font information or processing information that is print controlled by the printer control unit 12 and is selected by the printer control unit 12. The printer mechanism unit 13 prints print data on forms such as printing paper and forms.

The OCR2 is composed of a CCD or the like,
A reading unit 21 for optically reading print data printed on forms by the printer mechanism unit 13, and this reading unit
The recognition unit 22 recognizes the print data read by the character 21 and encodes the recognized character to output the recognition result to the host computer 3.

Further, the host computer 3 comprises a diagnostic program section 31, a font correction program section 32, and a print program section 33. That is, the recognition unit 22
The recognition result output from the host computer 3 is received by the diagnostic program unit 31. The diagnostic program unit 31 recognizes the recognition rate of the characters printed by the printer 1 by the OCR 2 based on the recognition result. Is calculated to determine whether or not the desired recognition rate, which has been input in advance, has been reached.If the desired recognition rate has not been reached, font update of the characters to be printed is performed based on the calculated recognition rate. The font correction program section 32. The font correction program unit 32, in accordance with the font update instruction of the print character, a correction request including selection information for selecting a font from a plurality of font information or processing information stored in the font storage unit 11 or a modification parameter for selecting processing information. The instruction is output to the printer control unit 12. further,
The font correction program section 32 stores several kinds of standard font patterns for font correction, and the font information and processing information stored in the font storage section 21 is stored in a font pattern as needed. rewrite.

Further, the diagnostic program section 31 specifies the test data to be printed by the printer 1 to the print program section 33, and the print program section 33 controls the printer of the specified test data including the type of characters to be printed and the type of font to be printed. Output to the unit 22. The printer control unit 22 controls the printing of the printer 1 based on the received designated test data and prints the test data on the form.

Next, the operation of the embodiment of the present invention having the above configuration will be described with reference to the font correction flowchart shown in FIG.

When a new printing device is introduced to test the recognition rate of printed characters by this printing device, first, a desired recognition rate, for example, 99., is input from an input device (not shown) constituting the host computer 3. A recognition rate of 999% is set. After the recognition rate is set, the diagnostic program section 31 specifies the test data to the print program section 33, and the print program section 33 outputs the specified test data including the type of print character and the type of font to the printer control section 22. It The printer control unit 22 controls the printer mechanism unit 23 based on the test data, so that the test data is printed on the form. (Step S1).

The forms on which the test data is printed are O
The print data supplied to CR2 and read on the form
Read optically at 21. The print data read by the reading unit 21 is output to the recognition unit 22, and the recognition unit 22 refers to a recognition dictionary (not shown) to perform character recognition of the print data. The recognized character is output to the diagnostic program unit 31 from the recognition unit 22 as the recognition result, and the information that the unrecognized character cannot be recognized is coded information. (Step S2).

When the recognition result is output to the diagnostic program unit 31, the diagnostic program unit 31 calculates the recognition rate based on the recognition result, and determines whether or not the calculated recognition rate has reached the set recognition rate. If the calculated recognition rate has reached the set recognition rate, the recognition rate test of the printing characters of the newly installed printing device is completed, but if it has not reached the next step to increase the recognition rate. Transition. (Step S3).

In the next step S4, a font correction instruction for the unrecognized character is output from the diagnostic program section 31 to the font correction program section 32. As a method of correcting the font, a method of selecting another font from the plurality of font information stored in the font storage unit 11 to change the font, and a plurality of processing information stored in the font storage unit 11, namely, the font There is a method of modifying the font by selecting the processing to be performed on the font depending on whether to make the font thicker, thinner, larger, or smaller. The selection of which correction method is used to correct the font is appropriately determined by switching to a changeover switch (not shown) provided in the input device according to the calculated recognition rate and the type of unrecognized character. It

Further, as a method for correcting the font, the font information and the processing information stored in the font storage unit 21 are rewritten with the font pattern stored in the font correction program unit 32 as needed, and the above-mentioned font is rewritten. By using the correction together, the font can be corrected more efficiently.

The font correction program section 32 instructed to correct the font selects the font from a plurality of font information to the printer control section 12 based on the input unrecognizable character information and the selected correction method. Or a modification parameter selected from a plurality of processing information is specified and a correction request is output. The printer control unit 12 selects a font or a parameter from the font storage unit 11 according to the specified selection information or the modification parameter,
Perform font correction. Further, the printer control unit 12 controls the printing of the printer mechanism unit 13 according to the selected font or parameter, and causes the test printing of step S1 to be performed. (Step S5).

The operation between steps S4 and S3 described above is repeated until the calculated recognition rate reaches the set recognition rate, and the font correction operation is completed.

In the above embodiment, this system is used for OCR.
However, the present invention is not limited to this, and may be applied to a system for recognizing a printed matter such as a bar code which is composed of characters and patterns.

Further, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0025]

As described above in detail, according to the font correction system of the present invention, when the recognition result by the recognition means does not reach the predetermined recognition rate, the selection means prints characters by the printing mechanism means. Since the font of is corrected by the instruction of the instruction means, even if a new printing device is introduced,
The recognition rate of the OCR can be maintained at a predetermined recognition rate on the user side, and the reduction of the recognition rate can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a font correction system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a font correction method.

[Explanation of symbols]

 11 ... Font storage unit (font storage unit) 12 ... Printer control unit (selection unit) 13 ... Printer mechanism unit (printing mechanism unit) 22 ... Recognition unit (recognition unit) 31 ... Diagnostic program unit (determination unit) 32 ... Font correction Program section (instruction means)

Claims (1)

[Claims] 1. A font storage means for storing a plurality of fonts for each character to be printed, a selection means for selecting a font to be printed from a plurality of fonts stored in the font storage means, and a selection by this selection means. A printing mechanism means for printing with the selected font, a recognition means for recognizing the font printed by the printing mechanism means, and a judgment means for judging whether or not the recognition result by the recognition means has reached a predetermined recognition rate. When the determination result determines that the recognition result does not reach the predetermined recognition rate, the selection unit is instructed to correct the font selected from the font storage unit and the printing mechanism unit is instructed to reprint. A font correction system comprising: an instruction means.