JPS59128678A - Separating device of character - Google Patents

Abstract

PURPOSE:To connect a left-hand radical of a KANJI (Chinese caracter) to a right-hand radical and to separate parts of the KANJI to separate the KANJI precisely by finding out the average value of projections from the number of picture elements corresponding to the length of a space between characters. CONSTITUTION:A picture signal corresponding to a sheet of paper which is inputted from an input terminal 1 is once stored in a picture memory 2 and then read out in accordance with a signal from a memory controlling circuit 3. A counter 4 counts up the number of black picture elements and writes the counted value in an Y projection memory 6. At the time of writing, a microcomputer 10 sets up a writing address in a memory controlling circuit 7. The projection value from the memory 6 is inputted to the computer 10, and when the value exceeds a fixed value, the projection is discriminated as a character part. When smaller than the fixed value, the projection is discriminated as one interval between lines. The picture signal on a scanning line which is discriminated as a character string is read out in a subscanning direction and processed by a counter 5, an X projection memory 8, an average value calculating circuit 11, and the computer 11. Thus, the parts of the KANJI are separated precisely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character cutting device used in OCR and the like. Conventionally, this type of character cutting device has been used to perform projection calculation in the X or Y direction (by determining the number of pixels for which the image signal is at the black level. However, in this method, In the case of kanji that are composed of many characters, such as ``唚〕〔　〔〕, etc., they are often separated into two characters, and this has the disadvantage that accurate character extraction cannot be performed.

The purpose of the present invention is 1. The aim is to improve all the above-mentioned shortcomings,
It is important to accurately cut out kanji that are composed of bias and labor, such as [ka] and [image].

The apparatus t of the present invention includes means for calculating a moving average value of a projection mark using the number of pixels corresponding to the length of a space between characters, and a means for cutting a character using the moving average value of the projection mark. It consists of a means for performing the extraction.

According to the device of the present invention, by calculating the average value of the projection with a stroke of 1 ga corresponding to the length of the blank space between characters, the parts of the bias and labor are connected, and the parts of kanji and kanji are separated. , it is possible to obtain the effect of accurately cutting out characters.

Next, the present invention will be explained in detail using the drawings.

FIG. 1 is an example in which the projector according to the present invention is used as a feature for cutting out characters. If the characters are written horizontally as shown in Figure 1 (At), it is possible to cut out the character string by finding the y projection and cutting at a certain angle. After cutting out a character string, if you use a projection in the The character string is cut out by determining the distance, and then the projection stroke in the X direction is determined for each character string and the characters are cut out.

FIG. 2 is a diagram showing the effect of the average value of the four X projections used in the present invention. In the diagram, if the characters are cut out using the X projector,
If the threshold of glojection is iit"0, [image], [
A kanji such as 彽 or labor is sometimes separated into two parts: 佽 and 郎. However, if you use the moving average value of the X projection and decide the window size to correspond to the length of the space between the characters, the uneven and labored parts of the characters will be combined, and the characters will be become separated. That is, in the figure, if the size of the window of the moving average value is lO, the threshold of the moving average value 11! If it is ft5, kanji such as [image] and [ka] are well combined with bei and labor.

Characters can be cut out well. By using the average value of the Kx projections in this manner, it becomes possible to cut out separated kanji characters, which was previously difficult to do with simple X projections.

FIG. 3 is a diagram showing an example of a circuit configuration for implementing the present invention. An image signal for one page of paper manually inputted from the input terminal l is stored in the memory 2. The stored image No. 11 is scanned and read out line by line according to No. 1δ of the memory control circuit 3, and the counter 4 reads out the black ll1II.
``A number is counted, y processing memory 6
will be written to. These operations are carried out by the memory control circuit 7 according to the microcomputer xoOThJllI signal.
is performed for all scan lines by setting the fill address. These y projector, n values are then read into the microcomputer 10, and y
If the size of the projector is larger than a certain value, it is judged as a character part, and if it is smaller, it is judged as a line spacing. From this, the character string of the first line is 02 from scanning line n1.
The I[iII image signal up to is cut out. Next, the image signals from the scan #nt line to the n2 line determined as a character string are read out in the sub-scanning direction according to the signal of the memory control circuit 3, and the number of black pixels is counted by the counter 5. The data is stored in the projection memory 8.

These operations are performed on pixels of all scanning lines by setting the write address by the memory control circuit 9 in accordance with the control signal from the microcopy 10. These X projector values are read out, and an average value of the X projectors is calculated in an average value calculation circuit 1N111 and inputted to the micro combinator 10. In the microcomputer 10, if the average value of the X projector is larger than a certain value, it is determined to be a character, and if it is smaller, it is determined to be between characters. This means that characters are extracted in units of fi1 characters. The extracted characters are output to the output terminal 1 according to the control signal of the memory control circuit 30.
2 is output.

The above procedure is performed for the y projections of all scanning lines, that is, for all character strings. Further, all these procedures are stored as a program in the kLOM of the microcomputer 10.

Although the present invention has been described above according to embodiments, these are merely illustrative and do not have a restrictive meaning. Here, data from 10 samples was used to calculate the average 11I of the X-projection blind, but this value varies depending on the font size and sampling density, and it is of course possible to use other cases. be.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the relationship between a glojexi seal and an input image according to the present invention, FIG. 2 is a diagram representing 1,000 M11 of the
The figure is a block diagram showing an example of a character cutting device of the present invention. In the figure, reference number 1 is an input terminal, 2 is an image memory, 3 is a memory control circuit, 4 and 5 are counters, 6 is a memory for the Y projector, 6-8 is a memory for the X projector, and 7 is a memory for the X projector. 10 represents a microcomputer, 11 represents an average value calculation circuit, and 12 represents an output terminal. Agent Bentoshi Shino Uchihara 1st (A)

Claims (1)

[Claims] In a character segmentation device that performs character segmentation, the distance between characters is compared to the length of the space between characters.
- means for obtaining a moving average value of the projection curve; and means for cutting out a character using the moving average value of the projection curve.