JPS60146376A - Device for segmenting character - Google Patents

Abstract

PURPOSE:To obtain a character segmenting device which can prevent erroneous segmenting of characters by detecting an optimum segmenting position around the position, which is determined by a character pitch or estimated character pitch to chop the character. CONSTITUTION:An estimation processing part 15 obtains the right end of a character at the right end or the position in correspondence to the left end of a character at the left side from a projection signal of one character string set in a projection signal memory 13 by detecting the position which first goes to ''0''. By utilizing the character pitch stored in a character pitch memory, binary signals in the projection signal memory 13 are overlapped from the position one character pitch at the right or left end away from a character at the right or left end, that is, folding by width of a character pitch is executed, and frequency distribution is generated. The estimation processing part 15 moves said start position at the place having the most blank lines from the obtained frequency distribution, that is, by length to a characteristic position of the frequency distribution, and transmits it to a segmenting start position memory 16.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character cutting device, and more particularly to a character cutting device that cuts out each character from a line of characters printed or written at equal pitches. Two types of conventional character cutting devices are known: -7 One method is to cut out each foot length from a line mark or character printing or writing frame.

Although this method is very simple, if the printed characters are misaligned or the characters are written outside, it will result in cutting errors. There are improved methods that detect the optimal position around the cutting position, but both require that the character cutting start position be known or accurately detected.

Another method is to cut out characters by comparing the projection signal obtained by projecting a binary line image of one line with the character pitch given by the length of continuous @lH corresponding to 5 characters? This is the way to do it. With this method, a character extraction start position is not required, and it is possible to extract all separated characters, but if one character is touching, the length of consecutive l'' corresponding to the characters will be longer than the character pitch. The number of characters is predicted from the pitch of one character and the characters are cut out at equal intervals. However, this method causes cutting errors because the width of the valley characters is not bad, and also when a separated character and a narrow sentence i are adjacent to each other, It is easy to make a cutting error.The cause of this cutting error is that the character cutting start position is unknown and the cutting position must be added using the partially obtained 1W information.

When characters with a wide width are written or printed at equal pitches, it is difficult to predict the starting position of character cutting from the entire information, although it is difficult to predict from partial information. For example, assuming the character cutting start position, the character lines in Figure 1 are cut at equal pitches (phantom cutting).

When the obtained 211N images are superimposed and projected, a density histogram of binary 1-bar ``'1'' as shown in Figure 2 is obtained corresponding to the valley character extraction start position.If the 0 character extraction start position is correct, Since there is no character portion at both ends of the pitch, the density should be low at both ends of the density histogram. Therefore, if characters are cut out from the cutting start position shown in FIG. 2(b), cutting errors can be prevented.

Furthermore, the obtained density histograms have the same distribution, only the starting position is different. @3 Even if there are touching characters or characters that become plates due to projection, as shown in figure 3, if the number of characters is small, the cutting start position will be determined by the position of other characters.Here, the projection of two images superimposed is 2 Project it between the character line of the value image and the front side, store all the projection values at each position, and store the stored projection values at positions at equal intervals.'i 7J
It can be obtained by calculating O. Also, as shown in Figure 3, if the letters touch or overlap, the top edge should be blurred.

Since it tends to occur at the lower end, it has a negative effect on the projected value. Therefore, if the projection is reduced except for the upper end, the lower end, or both ends, it becomes difficult to receive the entire shadow of the serif portion of the character. Furthermore, in reality, it is rare that the information is printed or filled out completely in equal pitch and square.

Accurate cutting can be performed by detecting the optimum position around the position determined by the character cutting start position and the same character pitch and performing cutting. For example, if the position of the fourth pattern 1 is a position where the character pitch is equal to the character cutting start position, position 2 around position 1 is preferable as the cutting position because it does not cut the character pattern. In addition, there are cases in which the above-mentioned character pitch is known in advance, such as with a typewriter, and cases in which the pitch of the p character can be estimated from the projection number 100 using a binary line image based on the information sound that the pitch is equal.

The purpose of the invention is to eliminate all such drawbacks of the conventional technology, and to
The character extraction start position is detected from the entire projection obtained by projecting the row image of the value or the entire feature signal extracted during projection, and the character extraction start position is determined from the requested start position at a given character pitch or estimated. Character cutting that prevents the p character from being cut out fJ4D by sequentially cutting out the character pitch, or by detecting and cutting the optimal cutting position around the position determined by the full starting position and the given character pitch or estimated character pitch. The goal is to provide equipment.

According to another aspect of the present invention, in a character cutting device that determines a character cutting position using a projection signal obtained by projecting a binary line image, the projection No. 16 is moved to a position away from the end of a character string and the character pitch is A means for lengthening the cutting start position from the characteristic position of the frequency distribution obtained by convolving with the width and the end position of the character string, and the cutting start position and character pitch are used to determine the individual character cutting position i't- A character cutting device is obtained, which is characterized in that it is equipped with a determining means.

Furthermore, according to the invention, in a character cutting table in which a character cutting position C is determined using a projection signal obtained by projecting a binary line image, the character pitch is determined from a position where the projection signal is sunk from the end of the character string. M that is folded in width and served all the way
[Means for determining the cutout start position from the characteristic position of the distribution and the position from the end of the character string; and the projection with the valley width by increasing or decreasing the character pitch length from the valley position around the cutout start position; Means for convolving the signal and storing a corrected cutting start position from the feature position of the frequency distribution where the frequency of the feature device is the minimum among the frequency distributions obtained, There is obtained a character cutting device characterized in that it is equipped with a cutting start device and means for determining individual character cutting positions using the character pitch.
Ru.

Next, embodiments of the present invention will be explained in detail with reference to all the drawings.

FIG. 5 shows a first embodiment of the present invention. In FIG. 5(a), the first embodiment is a line image memory that stores a binary signal corresponding to a part of a character string on a bookmark. Part 1 engineering and the image of the line f,! A projection processor 11. connected to the group 11, detects blank lines and character lines by scanning a binary signal of a partial character string, and obtains a projection number 1g. bμm2, a projection signal storage section 13 which is connected to the projection processing section 12 and stores the projection signal, and a character pitch storage section 14 which stores the character pitch information in advance, and is convolved under the character pitch.

Measurement processing unit 1 that evaluates the projection signal and determines the cutting position
5, a cutout start position storage unit 16 that stores the cutout start position of the favorite character string for this evaluation, and is connected to the line image storage unit 11, the projection processing unit 12, and the cutout start position storage unit 16, The first embodiment includes a cutting process s17 for determining the cutting position of the character base based on these No. A binary signal of a part of the character string obtained by doing so is set in the gold row image storage section 11.

The projection processing unit 12 scans in a direction perpendicular to the binary signal gold direction set in the line image storage unit 11, and if the scanned line is a blank line, it is '1', and if it is a character line, it is '0'. The projection signal (6th
(b)) is output and sent to the projection signal storage s13. For example, if the projection II 1 memory capital 13 has a line image as shown in FIG. 6(a), 2 as shown in FIG.
0 character pitch storage unit 1 in which the projection signal of the constant signal is set
4 stores the number of pixels corresponding to a predetermined character pitch, for example, 0.1 inch in the case of a 1-inch character and the character pitch length calculated by the resolution of the scanner. The evaluation processing unit 15 first calculates the position corresponding to the right end of the rightmost character or the leftmost character from the projection signal of one line of character string set in the projection signal storage unit 13.
'', and then using the character pitch stored in the character pitch storage unit 14, start from a starting position one character pitch away from the right or left end of the character to the right or left. By matching the binary/1po numbers of the projection signal storage unit 13, that is, fc-
'y-comput and complete the creation of the frequency distribution. Furthermore, this evaluation processing unit 15 moves the above-mentioned starting position by a distance D from the obtained frequency distribution to the position where the blank line is most numerous, that is, the length D to the feature position O1 of the frequency distribution, and sets it as the cutting start position, and performs cutting. The data is sent to the start position storage section 16. In the 1st (1) practical example, if the starting position is position If of the projection signal in Fig. 6(b) and the frequency distribution is as shown in Fig. 7, then Dv ) The length-shifted position B is set as the full cutting start position and is stored in the cutting start position storage section 16.

Once this cutting start position is determined, the cutting processing unit 17 uses the character pitch in the character pitch storage unit 14 and the cutting start position in the cutting start position storage s16 to
Divide the line image of the value into equal parts and find the cutting position corresponding to the character. FIG. 17' is a character pitch storage unit 140 character pitch cutting start position storage unit 1
All the projection signals in the projection 1 mark storage unit 13' corresponding to positions determined at regular intervals from the cutout start position of 6 are checked, and if the blank line is 1" of the % binary value 1d, it is set as the cutout position, and the character line, i.e. If it is not a blank line, use the closest blank line position around that position, and if there is no blank line, use it as the cutting position determined by the character pitch, and then create the 21-box image corresponding to the - character.

The binary image in the row image storage unit 11 is separated and the cutting position is determined.

That is, in the uninvented 1vth embodiment, the position is determined from the right or left end of the range of the requested character based on the projection signal between the character pitch given in advance and the direction perpendicular to the obtained character line, and the position is determined by the position @ As a starting position, superimpose the projection signals at equal intervals according to the character pitch described above, that is, add them.7Jl] Find the position where the calculation number becomes the yearly and short, and find the cutting start position with the starting position, This character cutting device sequentially cuts out binary line images at intervals of the character pitch from the obtained cutting start position.

Figure 8 shows the second example of non-invention. In Figure 8 (a), the second example uses a part of the character string on the form as a binary number 1d, similar to the first example. a line image storage unit 21 for storing, a projection processing unit 22 connected to the line image storage tkis21, which scans the 211 erasure of the character string in the -direction to detect blank lines and character lines, and obtains projection signals; It is connected to the projection processing unit 22 and is connected to the projection signal Hpi-Souzu 23 which stores the blank line and the character line and the projection No. 16 which is indicated by t. A character height detection unit 28 that calculates the character height according to the frequency distribution of A character pitch estimator 29 is connected to the projection signal storage unit 23 and a character pitch estimation unit 29 estimates the character pitch based on the binary number 11 and a signal indicating the character height.
An evaluation processing unit 25 that evaluates the projection signal, which is the binary signal, based on the character pitch and calculates the cutting start position; Cutting start position storage unit 2 that stores the start position r
6, the line image memory unit 211 is connected to the cutting start position storage unit 26 and the character pitch extraction unit 29,
These signals also include a cutout processing unit 27 that determines all the character cutout positions, and a line image storage unit 21.
Projection processing section 22, projection signal storage section 23. Evaluation processing section 25
Since the functions of 7'C and 27 are the same as those of the embodiment 7'C@1, a complete explanation of these four functions will be omitted.

The character height detection unit 18 calculates the character height from the frequency distribution of the binary signal obtained by projecting the binary image in the line image storage unit 21 in the line direction, and the frequency distribution described above is shown in FIG. Suppose that it is Otani as shown in .

The lower edge of the character is at position a, which is often referred to as the baseline, and the upper edge of the character is at position b, which is the end of the continuous frequency from position a.The difference between position a and position b is the character height, or line image memory. The left and right ends of the character string in the binary image of part 21 are detected.

The area between the obtained left end and right end is divided into several parts, and each divided range is projected in the row direction.
The character length is determined from the frequency distribution of the number 11, and the character orientation determined by averaging the obtained character heights is output to the character pitch estimator 29. The character pitch foot part 29 is the projection 1
From No. 21 Straight/1d set in the 1st part 23 of the GI@Ki, locate the center position of continuous twin or connected "θ" positions other than the blank line, and align the character direction with the back of the distance between the adjacent center positions. 1% of characters sent from the detection unit 28
For example, the character height is 70
The average value of the distance between center positions Pi1 from - to 170 inches or the frequently occurring distance between center positions is estimated as the character pitch. Based on the estimated character pitch obtained in this manner, the cutout processing unit 27 outputs a character cutout position τ, etc. from the cutout start position from the cutout start position storage unit 26.

FIG. 8(b) shows a modification of the uninvented second embodiment, which includes a cutout processing section 27', which includes the row image storage section 21, the cutout start position storage section 27', and the cutout processing section 27'. It is connected to the projection jd number storage unit 23' as well as to the character pitch estimation unit 26 and the character pitch estimation product 29, and similarly determines character cutting positions based on these 1g numbers.

As described above, the second embodiment extracts one character by adding up the character pitch obtained from the character string on the form. That is, the uninvented 20th embodiment calculates the estimated character pitch obtained from the character line direction obtained by projecting a binary line image and the projection signal in the direction orthogonal to the character line, and the obtained projection signal. Determine the position from the right or left end of the existence range of the character called ``Yo'', and set the position 1 as the entire starting position and the projection 16.
The iμ-minute projection signals within the range determined by the symbol and character height are superimposed (or f
cfc inclusion), that is, find the position where the added value calculated by Calo at one equal interval position is the minimum, and cut out with the starting position,
After determining the starting position, a binary line image is cut based on the projected signal in the direction orthogonal to the character line at positions at equal intervals using the estimated character pitch and the peripheral position of the seventh digit m from the obtained cutting start position. This is a character cutting device.

FIG. 10 shows a third embodiment of the invention τ, gi.

In Figure (a), the third embodiment, like the first embodiment, has a row image storage group 31 that stores the character string t2 value 1d for one character string on a form, and a row image storage section 31, the upper end, lower end, and character orientation of the binary 1-character are connected to the character orientation detection unit 38, and connected to the image storage unit 31 and the character orientation detection unit 38; and a projection processing unit 32 that runs a one character position range from the 21 straight 16 and the character direction and inserts a blank line and a character line.

A projection signal register 33 is connected to the projection processing section 32 and memorizes the blank line or character line of the binary 1 bar (projection number 16) and the character height detection section 38. It is connected to a character pitch storage section 34 which determines the character pitch from the height of one character and number 16, and stores all of this.

an evaluation processing section 35 that is connected to the projection signal a storage section 33 and the character pitch storage section 34 and evaluates the projection signal and determines a cutting start position; and a cutting start position that stores the cutting start position from the evaluation processing section 35. a storage section 36; and the row image storage section 31. It includes a cutout processing section 37 that is connected to the character pitch/chi storage section 34 and the cutout start position storage section 36 and determines the cutout position of the character.

First, in the third embodiment, a document is scanned and two transmission signals of the scanned part are set in the line image storage section 31. Next, when the character height detection unit 38 determines the height of one character by calculating the upper end, lower end, and character spacing from the binary signal for one unit, the projection processing unit 32 sets the height in the line image storage unit 31. 2 transmission signals are scanned in a direction orthogonal to the line direction within a position range defined by the upper edge, lower edge, and character height of the character obtained by the character height detection unit 38, and the line is scanned. If it is a blank line, it outputs a second transmission signal that changes it to '1' and if it is a character line, it changes to '0' and sends it to the projection signal storage section 33.

On the other hand, in the character pitch storage section 34, a predetermined character pitch is stored in addition to the character height from the character height detection section 38. The evaluation processing unit 35 determines the cutting start position from the binary projection number 1 and the character pitch, and stores the cutting start position in the cutting start position storage unit 36.
supply to. In the 9J output processing unit 37, 2 of the row image
The value 1δ is based on the 1-character pitch and the cutting start position, and the cutting position for each character is also set. However, this cutout processing section 37' calculates the cutout position iif for each character by taking into account the projection and 100 numbers.

As described above, the uninvented third embodiment determines the cutout positions of two characters by receiving the projection signal with constant distortion only within the range orthogonal to the character line, which is limited by the character height.

In other words, the third embodiment of the invention is to obtain a character height signal obtained by projecting a binary image, and to obtain a projection obtained by projecting a binary image within this character height range. No. 11 and
Based on the estimated character pitch derived from the character height signal, determine the position from the right or left end of the existence range of the character requested by the projection signal, and use the position as the starting position and generate the second transmission signal of the line image based on the estimated character pitch. Balance (and convolution) at equally spaced positions, that is, find the position where the force g and the obtained added value are the minimum, find the cutting start position with the above starting position, and sequentially from the obtained cutting start position This is a character cutting device that cuts out binary line images at intervals of estimated sentence pitch.

FIG. 11 shows a fourth embodiment of the invention. In FIG. 11, the fourth embodiment has a line image storage unit 41 that stores character strings of a part of a form as all 21 straight numbers and 16 numbers, as in the first embodiment. and a projection processing unit 42 which is connected, runs the two transmission signals to detect a blank line, detects the feature of the projection code being Samurai and the character Riri, detects the feature value, and obtains feature No. 11. , a projection 1 connected to the projection processing section 42 and storing all the projection signals.
J number storage section 43, a feature signal storage section 49 connected to the projection processing section 42 and storing the feature signal, a character pitch storage section 44 that stores the character pitch in advance, and the feature value number and the projection number number. and an evaluation processing unit 45 that determines the character extraction position based on the character pitch, and a extraction start position memory that is connected to the evaluation processing unit 45 and stores all character extraction start positions based on the character extraction position signal. section 46, and the image storage section 41. The projection number 16 storage unit 43% is connected to the character pitch storage unit 44 and the cutting start position storage unit 46, and based on these signals, the cutting position # of the character string is determined by 3'.
, and an extraction process '$47 to determine .

First, in the fourth embodiment, a portion of the 2nd line number obtained by scanning the form is set in the line image storage section 41. The projection processing unit 42 scans the two-transmission signal set in the line image storage unit 41 in a direction perpendicular to the line direction, and if the scanning line is a blank line, it is “1” and if it is a single character line, it is “0”. The projection 1g+3' storage unit 43 records the projection 1 word of 21ffl.
For example, when scanning the 21 orthogonal signal set in the row image storage capital 41 in a direction orthogonal to the row direction,
Features are extracted using the mask shown in FIG. 2, and the detected feature values are output to the feature signal storage section 49. The character example image shown in Fig. 13 (a) is scanned by applying the mask shown in Fig. 12, checking whether it hits the mask or not, and finding a binary feature value, as shown in Fig. 13 tbl. A feature value distribution is obtained. As can be seen from the figure, at both ends of the character, there are two transmission signals '0
”. The character pitch storage unit 44 stores the pixel length that corresponds to the character pitch length known in advance, and the evaluation processing unit 45 calculates the projection of one line of characters set in the projection signal storage unit 43. First, select the position corresponding to the rightmost position of the rightmost character or the leftmost position of the leftmost character from the signal.
0, which can be requested by detecting * at the position where θ'' is reached. Next, using the character pitch stored in the character pitch storage unit 44, the character pitch that is one character pitch away from the right or left end of the aforementioned character to the right or left side. Position 7 is determined, the obtained position is used as the starting position, and the two transmission signals in the characteristic signal storage unit 49 are superimposed to create a frequency distribution. Based on the obtained frequency distribution, the position with the most ``wO'' is detected, and the position is The position obtained by shifting the starting position r by the length up to r is set as the entire cutting start position and is sent to the cutting start position storage section 46. When the extraction start position is fixed, the extraction processing unit 47 equally divides the binary image in the line image storage unit 41 by the character pitch of the character pitch storage unit 440 and the extraction start position of the extraction start position l1ts file fis 46, and -
It is a binary image corresponding to a character. Alternatively, the cutout processing unit 47 checks the projection 1δ number storage unit 430 projection number corresponding to the position determined at equal intervals from the cutout start position in the cutout start position storage unit 46 based on the character pitch in the character pitch storage unit 44, and calculates the 2nd transmission signal. If it is a 1" blank line, the cutting position will be used. If it is a 5 character line and it is not a blank line, the closest blank line position will be around that position. If there is no reed blank line, the cutting position will be the position determined by the character pitch. , - Separates the binary image corresponding to the character from the two-line image storage section 41 and stores it at the cutting position.

As described above, the uninvented fourth embodiment uses feature values extracted from a binary line image for evaluation to determine the cutting start position, and determines the character cutting position 1 ft.

That is, in the uninvented fourth embodiment, when projecting a binary row image, the feature τ is extracted and used as a projected feature signal.

The position is determined from the right or left end of the existing range of characters based on the character pitch given in advance and the projection signal in the direction perpendicular to one character line, and the projection feature in the direction perpendicular to the Mil character line is determined from the position as the starting position. Find the position where the overlapping (or convolution) percentage, that is, the sum value of the whole signal is the minimum, at the symbol interval position according to the character pitch, calculate the cutting start position t + fe from the above starting position, and calculate the obtained cutting start position. The above-mentioned character bits are based on 2il based on No. 11, a projection between positions at equal intervals using the estimated character pitch and a direction perpendicular to the character line at surrounding positions of the position.
l! This is a character cutting device that cuts out line images of .

FIG. 14 shows a fifth embodiment of the invention. In FIG. 14, the fifth embodiment has a line image storage unit 51 that stores a part of a character string on a form as a binary number 1m, and a line image storage unit 51 that is connected to the line image storage unit 51, as in the first embodiment. , a projection processing unit 52 that scans the two markings to detect blank lines and character lines and obtains a projection signal, and a projection 1a@ connected to the projection processing unit 52 and storing the projection signal.
a storage section 53; an evaluation processing section 55 connected to the projection signal storage section 53 and determining the cutting position of characters based on the projection signal; The tangent angle is stored in the cutting start position storage section 56 and the row image data storage section 51.

Character height detection s58 that calculates the character height from the binary value 100
and a character pitch estimating unit 59 which calculates the estimated text pitch based on the character height 1a and the projection signal 1g which marks the cutting position of the character, and the binary polarization code and the cutout starting position. and a cutout processing section 57 which determines the cutout position of the character string based on signals of the character string and the estimated character pitch.

In this fifth embodiment, the estimated character pitch * is increased or decreased around the cutout start position determined based on the initially estimated pitch, and the cutout start position is obtained through re-evaluation. The first cutting start position is determined based on the estimated character pitch from the extraction section 59.The evaluation processing section 55 calculates a plurality of character pitch lengths obtained by increasing or decreasing the character pitch length output from the character pitch estimating section 59. , a frequency distribution is created by superimposing the two transmission signals of the projection signal storage unit 53 at positions around the first extraction start position as described above, and the re-determination of the extraction start position is estimated based on the obtained frequency distribution. The evaluation processing unit 55, which corrects the character pitch, sets the output cutting start position in the cutting start position storage unit 56 and sends the corrected estimated character pitch to the character pitch estimation group 59. 57 equally divides the binary image of the row 1 image memory 51 using the sentence pitch from the character pitch extension section 59 and the cutting start position of the cutting start position storage section 56, and divides the binary image corresponding to the - character into equal parts. Also, when the initially obtained character pitch cannot be accurately estimated, the p character pitch is corrected by re-evaluation.

As described above, the uninvented fifth embodiment corrects the character pitch once determined to determine the cutting positions of two characters.

Note that the present invention is not limited to the above embodiments,
As a means for estimating the character pitch, a method that calculates the distance between the edges of adjacent characters may be adopted.

Furthermore, the mask used to detect features during scanning may be a mask that produces different outputs for the edges and the center of one character, or may be a multi-valued feature value such as the frequency of matching the mask. Furthermore, when detecting the optimal cutting position around a position determined by one character pitch, the position range to be evaluated may be determined from the statistical amount obtained when character pitch estimation is performed.

As explained above, non-invention can be cut out without any error even if the starting position of characters or printing is not given on the form,
Furthermore, when the character pitch is not given, the estimated character pitch is matched, so that in addition to typed characters whose character pitch is known, it is also possible to cut out character strings written on frame standards.

That is, the uninvented fifth embodiment uses the estimated character pitch length obtained from the character line direction and the projection signal in the direction orthogonal to the character line, and the existing range of the character claimed by the projection signal in the direction orthogonal to the character line. A position is determined from the right end or the left end, and the projection signal in the direction orthogonal to the character line is convolved at positions at equal intervals according to the estimated character pitch length, using the starting position as the starting position, that is, the position where the added value is the minimum. , find a cutting start position 7 with the starting position, firstly, calculate the added value distribution using the same method for each length obtained by increasing or decreasing the estimated character pitch at valley positions around the cutting start position,
The cutout start position is corrected using the cutout position and the minimum frequency position of the distribution where the minimum added value is the smallest among the fc added value distributions, and the corresponding length is corrected as the estimated character pitch length. This is a character cutting device that cuts out a binary line image at positions at regular intervals using p character pitches from the cutting start position.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an example of character lines on a form, and Figure 2 is a diagram showing an example of character lines on a form.
Figure 3 shows a flkK histogram in which the binary images of the character lines in the figure are superimposed within the character pitch, Figure 3 shows the characters that overlap vertically with the characters that touched them, and Figure @4 shows the cutting position moved. Figure 5 is a block diagram showing an embodiment of @1 of the present invention;
+ shows a binary row image, FIG. 6 tb+ shows a complete binary projection signal from the 2-direct image of FIG. 6(a), and FIG. 7- shows the start of cutting ii? =(ll- Figure 8 is a block diagram showing the second embodiment of the present invention, and Figure 9 is a two-panel image with a gold character line direction. The state degree distribution f y3 obtained by projecting on
Figure 10 is a block diagram showing the third embodiment of the invention. Figure 11 is a block diagram of the fourth embodiment of the invention. Figure 12 is a diagram showing the feature extraction mask. , FIG. 13 is a diagram showing the feature value distribution obtained from the character example image and the mask of FIG. 12, and FIG. 14 is a block diagram showing the fifth embodiment of the present invention. 11.21, 31, 41.51... line image storage section %12, 22, 32, 42.52... projection processing section, 13.13', 23.23', 33.
33'. 43.53... Projection signal storage section, 14, 34,
44°...Character pitch storage section, 15.25,3
5.55...Evaluation processing section, 16, 26, 36.
46.56... Cutting start position storage section, 17,
27, 27'. 37.37', 47.57... Cutting processing unit, 28, 38, 58... Character straightness detection unit, 29
゜59...Character estimation chi push part, 49...
Feature signal storage section. h1 country<a) (bn, (C2 2 countries otriki 4sen (b) 沁5sen (61) A B (bnriki 6senno 8enno 7en power 17sen (α)) (b) Power 70 Power lI Shinry 13 Shinry 14 Shin° 7

Claims (1)

[Scope of Claims] (In a character cutting device that determines a character cutting position using a projection signal obtained by projecting a line image of 1121 m, means for determining individual character extraction positions using the extraction start position and character pitch; and t-
A character cutting device that uses percentage marks. (2) The character pitch is a known length.Claim No. fl)Claim 6: A self-contained character cutting device. (3) The character pitch is the length of the projected signal. (4) The projection No. 11 is the height of the character in the direction orthogonal to the character line. It is a binary signal of a character line or a blank line detected by scanning within a determined range, and the characteristic position of the frequency distribution is the position where the frequency is minimum. Character cutting device described in section 3). (5) The projection signal is a binary signal indicating whether it is a blank line or the edge of a character or not, which is extracted by scanning with a mask applied in a direction perpendicular to the character line. Character cutting device described in section 3). (6) The character cutting device according to claim (4) or (5), wherein the character cutting position is set at a position ft'e determined for each character pitch length from the cutting start position. (7) The method according to claim (4) or (5), wherein the blank line detected by examining the projection signal around the position determined by the character pitch length from the cutting start position is the individual character cutting position. Character cutting device. (8) Character cutting position using projection No. 1g obtained by projecting a binary line image? ! -Cut out desired characters. In the apparatus, the cutout start position is estimated from the characteristic position of the frequency distribution obtained by folding the projection signal at a position away from the end of the character string and the width of the character pitch, and the position from the end of the character string. means for convolving the projected signal sound with each width by increasing or decreasing the character pitch length from the valley position around the cutting start position, and convolving the projected signal sound with each width of the valley position around the cutting start position, and convolving the projected signal sound with the minimum frequency of the characteristic position among the frequency distributions obtained. Means for determining the corrected cutting start position from the % minute position. A character cutting device characterized in that the character cutting device has a means for determining a character cutting position f using the obtained cutting start position and the character pitch, and determining the cutting position f for each character using the obtained cutting start position and the character pitch. . (9) The character cutting device according to claim (8), wherein the initial character pitch has a known length. (10) The character segmentation device according to claim 8, wherein the initial character pitch is a length estimated from the projection signal. (11) The projection signal is a binary signal of character line or blank line detected by scanning within the range determined by the height in the direction orthogonal to the character line, and the characteristic position of the frequency distribution is the frequency A character cutting device according to claims (9) and (10), in which the position is the minimum. (12) The projection signal is a binary signal of the blank line or the edge of the character or other points extracted by scanning with a mask applied in the direction opposite to the character line, and the characteristic position of the frequency distribution has the minimum frequency. A character cutting device according to claims (9) and (l) in which the position is set as follows. (13) A patent claim in which the position determined for each character pitch length from the cutting start position is the position for cutting out each character. The character cutting device described in item (1) or item (12) (10) The blank line detected by the projection signal tN around the position determined by the character pitch length from the cutting start position is determined as the individual character cutting position. A character cutting device according to claim (1) or (12)