JPH07296101A - Character reader - Google Patents

Abstract

PURPOSE:To suppress the amount of image data to be stored for correction at a minimum and to reduce the load of an operator at the time of correction. CONSTITUTION:A field image picture segmented from a slip image, which is provided by an image input means 11, at a field segmenting means 12 is stored in a field image storage means 13. A character segmenting means 14 transmits the character segmented result to a character deciding means 15 and transmits the position information of a segmented character to a character position storage means 16. The character deciding means 15 decides and codes the segmented character. When coding is completed, the character is corrected by a correcting means 18. When the character is corrected, character image generating means 17 generates a character image by segmenting it from the field image in the field image storage means 13 while retrieving the character segmenting position in the character position storage means 16 corresponding to correcting object character information reported from the correcting means 18. This character image, field image and read result are displayed on a display device 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character reading device, and more particularly to a character reading device suitable for reading a form in which a reading target such as a slip input is divided into field units.

[0002]

2. Description of the Related Art When an OCR (optical character reading device) recognizes a character entered on various forms, it sometimes causes an unreadable character or a character that is erroneously recognized.

As a means for correcting such characters, in recent years, a method of independently collecting and displaying a character image and a field image of a reading field, and a method of cutting out an image in a range designated by an operator from all the form images, have been used. A method of enlarging and displaying is used. A conventional character reading device having such a function is disclosed in, for example, Japanese Patent Laid-Open No.
No. 148785.

A more specific example will be described with reference to FIG. In FIG. 4, the character reading device includes an image input unit 41 for inputting an image, a character recognition unit 42 for coding the input image, and a code data storage unit for storing the coded data. 43, an image processing mechanism 44 for processing the input image, a field image storage unit 45 for storing the processed image data as a field image, and a character image by the coded data from the character recognition unit 42 The character image generation unit 46 and the character image storage unit 47 for storing the generated character image. The correction unit 48 performs correction processing using the data from the code data storage unit 43, the field image storage unit 45, and the character image storage unit 47 according to the setting from the keyboard 49, and displays this on the display 50. It is output to the code data output unit 51.

This character reading device can display a field image in a field unit or a character image in a character unit in the correction and visual check using the keyboard 49 and the display 50 of the operator.
These two types of images are obtained by the image processing mechanism 44 and the field image storage unit 45 for the field image, and by the character recognition unit 42, the character image generation unit 46, and the character image storage unit 47 for the character image. can get.

[0006]

However, in the case where the character image and the field image are independently collected as described above, the accumulated amount of the image becomes twice the data amount of the range to be read. There is. Further, when enlarging and displaying the image of the range instructed from all the form images, all the form images must be stored without fail, and there is a problem that the image storage amount is large. Furthermore, an operator's instruction is required every time the image is enlarged. Further, there is a problem that an operator's instruction is required every time the image is enlarged, which imposes a heavy burden on the operator.

Therefore, an object of the present invention is to provide a character reading apparatus capable of suppressing the amount of image data to be stored to the minimum amount necessary for character correction and reducing the operator's load at the time of correction. is there.

[0008]

A character reading apparatus according to the present invention comprises image input means for inputting character information to be input as an image, and field cutting means for judging a field position on the input image and cutting a field. Field image storage means for storing the image of the cut out field, character cutout means for judging the character position on the input image and cutting out the character, and character position storage means for storing the cutout position of the cut out character Character determining means for determining and coding the cut out characters, character image generating means for generating a character image from the field image of the field image accumulating means using the character cut-out position of the character position storing means, Read data encoded by the character determination means and the field image The field image data from the stacking means and the character image from the character image generation means are used to control the correction processing, and a display device for displaying these are provided. Characterized by cutting out and displaying the character image.

According to the present invention, the image input means for inputting the character information to be input as an image, the form format in which the characters / field positions to be recognized are registered, and the field position on the input image are displayed. Field cutting means for judging and cutting out the field, field image storing means for storing the image of the cut out field, character cutting means for judging the character position on the input image and cutting out the character, and judging the cut out character And a character determining means for encoding, a character image generating means for generating a character image from the field image of the field image accumulating means by using the character position information of the form format, and a reading coded by the character determining means. Field and data from the field image storage means A character image is cut out from the field image without specifying the range of the operator, which has a correction means for controlling the correction processing using the image data and the character image from the character image generation means, and a display device for displaying these. It is possible to obtain a character reading device which is characterized in that it is displayed.

[0010]

The present invention will be described in detail with reference to the drawings. FIG. 1 is a functional block diagram of a first embodiment of a character reading device according to the present invention, which is an image input means 11
A field cutout unit 12, a field image storage unit 13, a character cutout unit 14, a character determination unit 15, a character position storage unit 16, a character image generation unit 17, a correction unit 18, and a display device 19. Composed of.

The image input means 11 inputs an image signal obtained by photoelectrically converting characters and figures on a paper surface with a scanner or the like. From this image signal, the field cutout unit 12 cuts out a range corresponding to one entry frame on the slip as a field image and stores it in the field image storage unit 13.

On the other hand, the character cut-out means 14 cuts out a character from the image signal, and the character judgment means 15 judges the character and codes it. Further, the character position storage means 16
Receives the character position on the image from the character clipping means 14 and stores it.

After the recognition is completed, in order to correct the unrecognized character (unread character) or the erroneously recognized character (misread character), the correction means 18 searches the read result for the unread or misread character, The reading result and the field image of the character correction target are displayed on the display device 19. Further, the character image generation means 17 searches the character cut-out position of the character position storage means 16 from the correction target character information (field number, digit, etc.) notified from the correction means 18, and from the field image of the field image storage means 13. Generate a character image by cutting it out. The correction means 18 sends this character image to the display device 19 and displays it together with other information. The character image generating means 17 can cut out the character image and simultaneously enlarge / reduce the image.

As a result, the reading result 31, the field image 32 and the character image 33 are displayed on the screen as shown in FIG.

FIG. 2 is a functional block diagram of a second embodiment of the present invention, which is an example in which a form format 21 is provided in place of the character position storage means 16 shown in FIG. 1, and other components are shown in FIG. Same as 1. This form format 21
The characters / field positions to be recognized are registered in advance.

That is, the character image generating means 17 calculates the character position from the field position or the character position registered in the form format 21, without using the character position actually cut out as shown in FIG. Other parts are the same as in FIG.

[0017]

As described above, the character reading apparatus of the present invention can suppress the amount of image data to be stored to the minimum amount necessary for character correction and reduce the operator's load at the time of correction.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a first embodiment of the present invention.

FIG. 2 is a functional block diagram of a second embodiment of the present invention.

FIG. 3 is a diagram showing an example of a correction screen according to the present invention.

FIG. 4 is a functional block diagram of a conventional device.

[Explanation of symbols]

 11 image input means 12 field cutout means 13 field image storage means 14 character cutout means 15 character determination means 16 character position storage means 17 character image generation means 18 correction means 19 display device 21 form format 31 read result 32 field image 33 character image

Claims (2)

[Claims] 1. An image inputting means for inputting character information to be inputted as an image, a field cutting-out means for judging a field position on the inputted image and cutting out a field, and a field image for accumulating an image of the cut-out field. Accumulation means, character cutout means for judging the character position on the input image and cutting out the character, character position storage means for storing the cutout position of the cut out character, and character for judging and coding the cut out character Determination means, character image generation means for generating a character image from the field image of the field image storage means by using the character cut-out position of the character position storage means, read data encoded by the character determination means, and The field image data from the field image storage means and the To have a correction means for controlling the correction processing using the character image from the character image generation means and a display device for displaying these, and to display the character image cut out from the field image without specifying the range of the operator. Character reading device characterized by. 2. An image input means for inputting character information to be input as an image, a form format in which characters / field positions to be recognized are registered in advance, a field position on the input image is determined, and a field is cut out. Field cutting means, field image storing means for storing the image of the cut out field, character cutting means for judging the character position on the input image and cutting out the character, and character for judging and coding the cut out character Determination means, character image generation means for generating a character image from the field image of the field image storage means using the character position information of the form format, read data encoded by the character determination means, and the field image Field image data from storage means and before Correction means for controlling the correction process using the character image from the character image generation means,
A character reading device having a display device for displaying these, wherein a character image is cut out from a field image and displayed without the operator's range specification.