JPH0132145Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a character recognition device with good operability.

(Background technology) Character recognition devices read documents in various formats, and the designation of the reading area in the document to be read, that is, the method for creating format control information, is defined by (1) the document to be read. There are two methods: (2) a method of reading a specific sheet on which the position of the area to be read on a two-dimensional plane and other specified information are written; and (2) a method of inputting similar data using a keyboard. There are two ways to check the created format data: (1) Compare the reading results obtained by reading the form on a trial basis with the form; and (2) Check the character pattern character by character during the trial reading. This method is based on a method of displaying the character pattern on a display and observing the position of the displayed character pattern to confirm the designation of the area within the document to be read. However, the above method is laborious, makes it difficult to detect errors, and requires operator experience and training. In other words, deviations in the reading area, errors in the type of characters to be recognized, etc. may be overlooked by observing the recognition results or displaying the character patterns. For example, if the character type to be read is a numeric character, even if you mistakenly specify mixed reading of alphanumeric characters and perform a trial reading, unless an alphabetic character appears in the recognition result, the character type to be read is incorrect. cannot be discovered. Furthermore, it is difficult to detect deviations in the reading area by observing character patterns unless the character pattern displayed during test reading is missing. These things not only complicate the operator's work, but also affect the reading accuracy of the device, which in turn impairs the operability of the device.

(Problem for the invention) In order to eliminate these drawbacks, the present invention is characterized by displaying the image data of the form and the format control information of the form in a superimposed manner on the display. An object of the present invention is to provide a character recognition device that is easy to use, has high accuracy, and has good operability.

(Structure and operation of the invention) FIG. 1 is a block diagram of an embodiment of the character recognition device of the invention, in which 11 is an optical signal input, 12 is a photoelectric conversion section, 13 is a recognition section, 14 is a control section, and 15 is a Character name output, 16 is format control information memory,
17 is a keyboard section, and 18 is a display section.

The operation of character recognition for the embodiment shown in Fig. 1 is as follows:
A detailed explanation will be given in order of the format control information confirmation operation.

The operation of character recognition in the embodiment of FIG. 1 is as follows. The operator presses a number key for specifying pre-registered format control information such as a reading area on a form, a character type, etc. related to a form to be read, and a reading start key. The keyboard unit 17 detects the depression of the key and sends the information to the control unit 14. The control section 14 reads out the format control information regarding the document to be read from a predetermined address corresponding to the format control information number in the format control information memory 16 based on the received format control information number, and reads out the format control information regarding the document to be read from the format control information memory 16.
After that, the recognition unit 13 waits for the character code of the recognition result to be output. The optical signal input 11 is converted into a binary quantized digital electrical signal by the photoelectric conversion section 12 and sent to the recognition section 13 .
The recognition unit 13 refers to the format control information received from the control unit 14, determines the position of the reading target area, the character type to be read, etc., and cuts out a character pattern from the electrical signal received from the photoelectric conversion unit 12. , extracts various features, recognizes characters by comparing them with a dictionary, and finally sends a character code to the control unit 14. The control unit 14 outputs the character code received from the recognition unit 13 to the character name output 15.

FIG. 2 is an example of a form used to explain the operation of confirming format control information in this embodiment.
is a form, and the characters, frames, etc. in the diagram are printed in a color that causes dropouts during photoelectric conversion. FIG. 3 shows an example of entry, and 31 is a form. 41 in Figure 4 indicates the form; 42, 43, 4
4 illustrates the area to be read on the form in FIG. 2, and is actually registered in the format control information in the form of coordinate values indicating the area to be read in the two-dimensional coordinate system defined in the form. . Fifth
6A and 6B are display examples during format control information confirmation operation. The operation for confirming format control information in the embodiment of the present invention shown in FIG. 1 is as follows. The operator presses the number key for specifying the format control information of the form whose format control information is to be confirmed and the format confirmation start key. The keyboard unit 17 detects the depression of the key and sends the information to the control unit 14.
The control section 14 refers to the format control information number signal and the format confirmation start signal received from the keyboard section 17, reads out the format control information from a predetermined address corresponding to the number in the format control data memory 16, and then performs photoelectric conversion. Part 1
Wait for signal from 2. The optical signal input 11 is converted into a binary quantized digital electrical signal by the photoelectric conversion section 12 and sent to the control section 14 . The control unit 14 creates a reading target area by referring to the image pattern of the form received from the photoelectric conversion unit 12 and the position of the reading target area in the form and the character type to be read in the data read from the format control information memory. Create data that overlaps the frame indicating the character pattern of the character type to be read,
The data is sent to the display section 18. Display section 18
displays the data received from the control unit 14 on the display, and the operator determines whether the format control information is correct or incorrect by observing the displayed screen.
5 and 6 are display examples in the format control information confirmation operation using the entry example shown in FIG. 3. In FIG. This is a frame indicating the area to be read, and 56, 57, and 58 are the areas 5 to be read.
3, 54, and 55 respectively indicate the types of characters to be recognized within the areas, and "N" indicates a number.
FIG. 6 is an example of a display when the format control information is incorrect, and is an example in which the data indicating the area to be read indicated by 51 in FIG. 5 and the character type to be read indicated by 57 are incorrect. "AN" in FIG. 6 indicates mixed reading of alphanumeric characters. Figure 5,
In Figure 6, the area to be read is shown as a frame, but another method to effectively influence the operator's vision is to use so-called inverted display, in which the bright and dark dots are reversed. It is also possible to change the brightness or color of the data created from the format control information in order to distinguish it from the form image data.

(Effect of the invention) As explained above, in the embodiment of the invention, the image image pattern of the form and the format control information regarding reading of the form are displayed on the display in a superimposed manner in association with the position within the form, so that the operator can The confirmation work of the format control information can be carried out in one-to-one correspondence with the form by looking at the picture, which has the advantage of making it easy to detect errors. The present invention has the function of displaying the image data of the form and the format control information in a superimposed manner with corresponding positions, so it has the advantage that the format control information can be easily confirmed, and therefore has good operability. It can be used in character recognition devices.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2 is an example of a form used in the embodiment of the invention, Fig. 3 is an example of filling in the form, Fig. 4 is a diagram showing the area to be read,
5 and 6 show diagrams of display examples. 11... Optical signal input, 12... Photoelectric conversion section, 1
3...Recognition unit, 14...Control unit, 15...Character name output, 16...Format control information memory, 1
7...Keyboard section, 18...Display section, 21...
Ledger, 31... Ledger, 41... Ledger, 42,4
3, 44...reading target area, 51...display screen,
52... Frame indicating a form, 53, 54, 55... Frame indicating an area to be read, 56, 57, 58... Characters indicating a character type to be read.

Claims (1)

[Claims for Utility Model Registration] (1) A photoelectric conversion unit that optically reads characters and converts them into electrical signals, and a photoelectric conversion unit that reads characters optically and converts them into electrical signals, and stores characters provided from the photoelectric conversion unit in a memory according to character reading control information from a keyboard unit. In a character recognition device having a recognition unit that recognizes using a dictionary, two types of data, pre-recognition image data read from a photoelectric conversion unit and character reading control information data, are made to correspond to positions in a two-dimensional plane. What is claimed is: 1. A character recognition device comprising: a display unit that displays a character. (2) The character recognition device according to claim 1, wherein the two types of data are displayed on the display section with mutually changing brightness or color. (3) One of the above two types of data is displayed by inverting the data display within the two-dimensional plane using the data indicating the two-dimensional plane in the form with the specified reading area among the control information from the keyboard. A character recognition device as set forth in claim 1 of the utility model registration claim, which is used as a display.