JPH0660216A - Character recognizing device - Google Patents

Abstract

PURPOSE:To recognize a character in a slip image inputted from a facsimile equipment even in the case the scan density of the facsimile equipment is unknown. CONSTITUTION:A mark detecting part 2 detects a mark imparted in advance on the inputted slip image. A scan density detecting part 3 detects the scan density of the facsimile equipment from position of the mark detected by the mark detecting part 2 and position information of the mark given in advance. An address detecting part 4 converts character position information given in advance to memory address information of the inputted slip image from the scan density detected by the scan density detecting part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character recognition device for recognizing characters in a form image input from a facsimile device.

[0002]

2. Description of the Related Art Conventionally, in this type of character recognition device, character position information given in advance is fixedly converted into memory address information of a form image, characters on the form image are cut out, and the characters are recognized. .

[0003]

In the above-mentioned conventional character recognition device, it is necessary to fix the scan density of the facsimile device, which limits the settings of the facsimile device and the character recognition device. Further, when the scan densities are different, there is a drawback that the character cannot be recognized.

It is an object of the present invention to provide a character recognition device which can recognize characters in a form image input from a facsimile machine even when the scan density of the facsimile machine is unknown.

[0005]

A character recognition apparatus of the present invention is a character recognition apparatus for identifying characters in a form image input from a facsimile apparatus, and two points are given in advance on the input form image. Second detecting means for detecting the above-mentioned marks, and second detecting means for detecting the scan density of the facsimile apparatus from the position information of the marks detected by the first detecting means and the position information of the two marks given in advance. And a conversion unit that converts the character position information given in advance from the scan density detected by the second detection unit into memory address information of the input form image.

[0006]

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

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In FIG. 1, an image memory 1 stores an image of a form input and transmitted from a facsimile device (not shown) in form units. The mark detection unit 2 detects a mark from the form image in the image memory 1 and obtains position information. The scan density detector 3 obtains the scan density from the mark position information sent from the mark detector 2 and the mark position information sent from the controller 7.
The address detector 4 obtains a character position address on the image memory 1 from the scan density sent from the scan density detector 3 and the character position information sent from the controller 7. The character cutout unit 5 cuts out a character from the image memory 1 based on the position information sent from the address detection unit 4. The recognition unit 6 recognizes the characters cut out by the character cutting unit 5 and stores them as form recognition data. The control unit 7 controls each unit and outputs the form recognition data as a recognition result.

FIG. 2 is a diagram showing a form image. Figure 2
(A) is a form image A input to the facsimile device
2B is a diagram showing a form image B0 in which the form image A0 is stored in the image memory 1. FIG. In FIG. 2, the form image has a mark a1,
a2, b1 and b2 are printed. In addition, line data a3 and b3 are described in the form image.

Here, the mark position a1 (x) on the form A0, with the upper right of the form image as the reference point (0,0),
a2 (x) and read row data position a3 (x, y)
Is previously measured, and the scan density X in the x direction in the scan density detector 3 in FIG. 1 is {b1 (x) −b2 according to the mark position information detected by the mark detector 2 in FIG.
(X)} / {a1 (x) -a2 (x)}, and the scan density Y in the y direction is obtained by f (X) uniquely determined by X.

Using these X and Y, the address detection unit 4 in FIG. 1 obtains b3 (x, y) = (a3 (x) .X, a3 (y) .Y).

The cutout portion 5 of FIG. 1 is defined by b3 (x, y).
1 cuts out characters from the image memory 1 shown in FIG.
The cut-out character is sent to the recognition unit 6 to recognize the character.

[0012]

As described above, according to the present invention, since a given mark can be detected and the scan density can be obtained from the mark position information given in advance, the scan density of the facsimile apparatus is unknown. Even if there is, it has an effect that character recognition can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2A is a diagram showing a form image input to a facsimile apparatus. (B) is a diagram showing a state in which the form image of (a) is stored in an image memory.

[Explanation of symbols]

 1 image memory 2 mark detection unit 3 scan density detection unit 4 address detection unit 5 character cutout unit 6 recognition unit 7 control unit

Claims (1)

[Claims] 1. A character recognition device for identifying characters in a form image input from a facsimile device, comprising first detecting means for detecting two marks added in advance on the input form image. Second detection means for detecting the scan density of the facsimile apparatus from the position information of the marks detected by the first detection means and the position information of the two marks given in advance, and the second detection means. And a conversion unit that converts the character position information given in advance from the scan density into memory address information of the input form image.