JPH01180081A - Optical character reader - Google Patents

Abstract

PURPOSE:To make the degree of similarity of displayed characters to be recognized identifiable at a glance at every character by selecting different displaying colors depending upon the degree of similarity and displaying the characters to be recognized by using the selected displaying colors. CONSTITUTION:At a recognizing means 5 an inputted character pattern stored in a storing means 3 is compared with each reference character pattern in a recognizing dictionary 4 and the degree of similarity of both patterns is calculated and sent to a control means 6. At the means 6, the character which has the maximum degree of similarity and satisfies a prescribed condition decided in accordance with the recognizing system is selected and the character code of the selected character is sent to an output means 7. The degree of similarity is sent to a displaying color selecting means 9. A character signal corresponding to the character code sent from the means 6 is outputted from the means 7 to a display device 8 and a displaying color is found at the means 9 from a corresponding table 10 in accordance with the inputted degree of similarity. The signal indicating the displaying color is outputted to the display device 8. On the device 8 the character indicated by the character signal sent from the means 7 is displayed with the color indicated by the displaying color signal from the means 9.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention optically reads a character pattern recorded on a recording medium such as a form, compares it with a reference character pattern, and determines the highest similarity standard. The present invention relates to an optical character reading device that selects and displays a character pattern.

[Prior Art] Fig. 2 is a block diagram showing a schematic configuration of a conventional optical character reading device disclosed in, for example, Japanese Patent Publication No. 53-46062. (2) is a scanning means that scans the form (1) and performs photoelectric conversion to read it out; (3) is a storage means that stores the character pattern obtained by the scanning means (2); and (4) is a large number of A recognition dictionary that stores character patterns of standard glyphs (standard character patterns);
(5) is a recognition means that compares the character pattern in the storage means (3) with the reference character pattern and calculates the degree of similarity between the two;
6) is a control means for selecting a character that has the maximum similarity from the recognition means (5) and satisfies a predetermined condition, and outputs its character code; and (7) is a control means for outputting the character code from the control means (6). This is an output means for displaying the corresponding characters on the display device (8).

Next, the operation will be explained. The optical black and white pattern obtained by scanning the characters on the form (1) with the scanning means (2) is converted into a character pattern of 1, 0 (hereinafter referred to as input character pattern) of a digital electrical signal and is stored in the storage means (3). ). Next, in the recognition means (5), the input character pattern stored in the storage means (3) and each reference character pattern in the recognition dictionary (4) are superimposed and compared, and the degree of matching between the two is determined, that is, the degree of similarity. is calculated and sent to the control means (6). The control means (6) selects the character that has the maximum similarity and satisfies a predetermined condition determined by the recognition method, and sends the character code of that character to the output means (7). The output means (7) outputs a character signal corresponding to the character code sent from the output means (7) to the display device (8) and displays the character. In this case, the characters are generally displayed in a single color.

Since conventional optical character reading devices are configured as described above, there is a problem in that it is not possible to tell how similar the recognized and displayed reference character pattern is to the input character pattern just by looking at the displayed characters. there were.

This invention has been made to solve the above-mentioned problems, and the optical character reading device according to the present invention provides an optical character reading device that can identify the similarity of displayed characters just by looking at them. In the above device, display color selection means is provided for selecting a different display color depending on the degree of similarity calculated by the recognition means, and characters recognized in the display color selected by the display color selection means are It is designed to be displayed.

[Function] In the optical character reading device of the present invention, each time each character is recognized, the degree of similarity thereof is simultaneously outputted from the control means, and the display color selection means selects a color according to the magnitude of the degree of similarity. The selected and recognized characters are displayed in the selected display color on the display device.

[Example] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention. In the figure, (1) is a form, (2) is a scanning means, (3) is a storage means, (4) is a recognition dictionary, (5) is a recognition means, (6) is a control means, (7) is an output means, and (8) is a display device, which are almost the same as the conventional one shown in FIG. The display device (8) is different from conventional devices in that it has a function of outputting the similarity degree along with the character code recognized by the display device (8), and a function of displaying characters in a large number of different colors according to the input display color signal. There is. (9) is the control means (
display color selection means for selecting a color according to the degree of similarity from (6) and outputting the display color signal to the display device (8);
10) is a correspondence table showing the relationship between the display color selected by the display color selection means (9) and the degree of similarity.

Next, the operation of this embodiment will be explained. First, the form (
1) The characters above are scanned by the scanning means (2) to obtain an input character pattern and stored in the storage means (3).

In the L&Makoto means (5), the input character pattern stored in the storage means (3) and each reference character pattern in the recognition dictionary (4) are compared, the degree of similarity between the two is calculated, and the control means (6) Sent. The control means (6) selects a character that has the maximum similarity and satisfies a predetermined condition determined by the recognition method, and the character code of that character is outputted to the display color selection means (9). ) will be sent to. Output means (7
), a character signal corresponding to the character code sent from the control means (6) is output to the display device (8), while the display color selection means (9) creates a correspondence table (
10), the display color is determined and the display color signal is output to the display device (8).

On the display device (8), the characters sent from the output means (7) (characters in the form of a go sign) are displayed in the color according to the display color signal from the display color selection means (9).

In the above embodiment, the display color selection means (9) is provided separately, but even if the output means (7) and the control means (6) are provided with a similar function, the display color selection means (9) may also be The device (8) may have a function of inputting the degree of similarity and selecting and displaying the color shown in the correspondence table (10).

Further, the correspondence between similarity and color shown in correspondence table (10) is merely an example, and it goes without saying that the correspondence may be made to correspond to other colors.

[Effects of the Invention] As described above, according to the present invention, display color selection means for selecting a different display color depending on the degree of similarity is provided, and the display color selected by the display color selection means is Since the characters that have been recognized are displayed, the similarity of the recognized displayed characters can be identified for each character at a glance, and the reliability of the displayed characters can be easily known.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention, and FIG. 2 is a block diagram showing a schematic configuration of a conventional optical character reading device. In the figure, (1) is a form, (2) is a scanning means, and (3)
is a storage means, (4) is a recognition dictionary, (5) is a recognition means, (
6) is a control means, (7) is an output means, (8) is a display device, (9) is a display color selection means, and (10) is a correspondence table showing the relationship between display colors and degrees of similarity. Note that the same reference numerals in Figure 1 indicate the same or equivalent parts.

Claims (1)

[Claims] A scanning means that scans and optically converts characters recorded on a recording medium such as a form, a storage means that stores character patterns obtained by this scanning means, and a recognition system that stores character patterns of standard glyph shapes (hereinafter referred to as reference character patterns). a dictionary, a recognition means that compares the character pattern in the storage means with a reference character pattern in the recognition dictionary and calculates their similarity, a character whose similarity calculated by the recognition means is the highest and satisfies a predetermined condition; An optical character reading device comprising a control means for outputting a code, and an output means for displaying a character corresponding to the character code from the control means on a display device,
A display color selection means is provided for selecting a different display color according to the degree of similarity calculated by the recognition means, and the recognized character is displayed in the display color selected by the display color selection means. An optical character reading device characterized by: