JPH07101438B2 - Character recognition device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a character recognition device that optically scans a form and performs character recognition based on the read image information, and more particularly to a scanner that optically scans the form. The present invention relates to a character recognition device that automatically corrects variations in mounting accuracy and variations in the form transport system.

[Conventional technology]

Conventionally, in this type of character recognition device, very precise adjustments have been made to the mounting position of the scanner, the magnification, and the form transport system so that the image information read by the scanner is not displaced in position.

[Problems to be Solved by the Invention]

Since such a precise adjustment is manually performed when the device is assembled, there is a problem that the adjustment takes a very long time.

An object of the present invention is to provide a character recognition device that solves such a problem, automatically corrects the variation in the mounting accuracy of the scanner and the variation in the transport system of the form, and does not require manual adjustment. is there.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a scanner unit that optically scans a form and outputs image information of the form, an image memory that stores image information output by the scanner unit, and a scanner unit that performs predetermined correction. The form with the timing mark is scanned and output, the position of the timing mark is detected from the image information once stored in the image memory, and the detected position of the timing mark is compared with its correct position to show the deviation between them. A comparison and analysis unit that outputs information, a comparison result storage unit that stores information indicating the deviation output by this comparison and analysis unit, and a character on the form that identifies the characters on the form by the image information stored in the image memory. At the time of identification, a recognition unit including a correction unit that performs a positional correction of the image information based on the information stored in the comparison result storage unit; The image memory, the comparison analysis unit, the comparison result storage unit, and the operation A for detecting the deviation of the transfer section and the conveyance system, and the operation B for correcting the image information by the deviation detected by the operation A to perform the character recognition. An image memory, a comparison analysis unit, a comparison result storage unit, and a control unit for transmitting the additional information such as the reading area on the form to the recognition unit.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a character recognition device according to the present invention. This device scans the form optically,
A scanner unit 1 for outputting the image information, a recognition unit 5 for identifying characters on a form from the image information from the scanner unit, and an image memory 2 for storing the image information output by the scanner unit 1, Scanner unit 1
Scans and outputs a form on which a predetermined timing mark for correction is drawn, detects the position of the timing mark from the image information temporarily stored in the image memory 2, and detects the position of the detected timing mark and its correct position. A comparison / analysis unit 3 for comparing and outputting information indicating the deviation, a comparison result storage unit 4 for storing information indicating the deviation output by the comparison / analysis unit, an image memory 2, a comparison / analysis unit 3, and a comparison result. Control unit 6 for controlling storage unit 4 and recognition unit 5
It has and. The control unit 6 is specifically the scanner unit 1
A for detecting the deviation of the transport system and the conveyance system, and this operation A
The operation B for correcting the image information and performing the character recognition based on the deviation detected in step S4 is performed on each part, and additional information such as the reading area on the form is transmitted to each part. Also, the recognition unit 5
When the recognition unit identifies the characters on the form based on the image information stored in the image memory 2, the comparison result storage unit 4
Is provided with correction means for performing positional correction of the image information based on the information stored in.

Next, the operation will be described. First, the operator sets a form on which a predetermined timing mark for correction is drawn on the scanner unit 1 and instructs the control unit 6 to perform the operation A. Thereby, the control unit 6
Causes each unit to perform the operation for the operation A. Scanner unit 1
The image information read by optically scanning the form is first stored in the image memory 2. FIG. 2 shows an example of a form in which the correction timing mark is drawn.
Mark 11 is drawn on the four corners of the form. Next, the control unit 6
Controls the image memory 2 and causes the comparative analysis unit 3 to output the stored image information. Upon receiving the image information from the image memory 2, the comparative analysis unit 3 detects the position of the timing mark and compares the detected position with the correct value of the timing mark. Then, the comparison analysis unit 3 outputs the information indicating the positional shifts to the comparison result storage unit 4 and stores the information. FIG. 3 shows that the timing mark 12 in the image read by the scanner unit 1 is displaced from the original mark 11. The comparison result storage unit 4 stores information regarding these deviations.

When performing a normal character recognition operation, the operator sets a normal form on the scanner unit 1 and instructs the control unit 6 to perform operation B. As a result, the control unit 6 causes each unit to perform the operation for the operation B. The control unit 6 first controls the image memory 2 to cause the recognition unit 5 to output the image information written and stored by the scanner unit 1. In the recognition unit 5, the correction means corrects the positional shift of the image information from the image memory 2 based on the information indicating the shift from the comparison result storage unit 4, and the recognition unit 5 then cuts out the characters. Go and do character recognition.

As described above, in the character recognition device of the present invention, by performing the operation for detecting the deviation of the scanner unit or the conveyance system once, the deviation information is stored in the comparison result storage unit.
The deviation is automatically corrected based on the information. Therefore, the precise adjustment that was necessary in the past is not necessary, and the time required for adjusting the device can be greatly reduced.

〔The invention's effect〕

As described above, the present invention optically scans a form,
In a character recognition device having a scanner unit for outputting the image information and a recognition unit for identifying the characters on the form from the image information from the scanner unit, the form in which the scanner unit draws a predetermined correction timing mark is used. And a comparison analysis unit that detects the position of the timing mark from the image information that is output by scanning and outputs the information indicating the deviation between the detected position and the correct position of the timing mark. And a comparison result storage unit for storing information indicating a deviation output by the recognition unit, and the recognition unit stores the comparison result storage unit when the recognition unit identifies a character on a form based on image information from the scanner unit. A correction means is provided for correcting the position of the image information based on the information.

Therefore, in the character recognition device of the present invention, by performing the operation for detecting the deviation of the scanner unit or the conveyance system once, the deviation information is stored in the comparison result storage unit, and thereafter, the deviation is detected based on the information. It is automatically corrected. Therefore, the precise adjustment that was necessary in the past is not necessary, and the time required for adjusting the device can be greatly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a character recognition device according to the present invention, FIG. 2 is a plan view showing an example of a form on which correction timing marks are drawn, and FIG. FIG. 6 is a plan view showing how the correction timing mark in the image read by the scanner unit is deviated from the original mark. 1 ... Scanner unit 2 ... Image memory 3 ... Comparison analysis unit 4 ... Comparison result storage unit 5 ... Recognition unit 6 ... Control unit

Claims (1)

[Claims] 1. A scanner unit for optically scanning a form and outputting image information of the form, an image memory for storing image information output by the scanner unit, and a form in which the scanner unit draws predetermined correction timing marks. A comparison analysis unit that detects the position of the timing mark from the image information temporarily stored in the image memory, compares the detected position of the timing mark with its correct position, and outputs the information indicating the deviation. And a comparison result storage unit that stores information indicating a shift output by the comparison and analysis unit, and a comparison result storage unit that identifies characters on a form by identifying image characters stored in the image memory. The deviation between the recognition unit, which has a correction unit that corrects the position of the image information based on the information stored by the scanner, and the scanner unit and the conveyance system The image memory, the comparison / analysis unit, the comparison result storage unit, and the recognition unit are caused to perform the operation A for performing the operation A and the operation B for correcting the image information based on the deviation detected by the operation A and performing the character recognition. A character recognition device comprising an image memory, a comparison analysis unit, a comparison result storage unit, and a control unit for transmitting the additional information such as the reading area to the recognition unit.