JP2018018366A - Information processing device, character input program, and character input method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable determination whether or not there is a blank irrespective of the types and sizes of characters.SOLUTION: An information processing device includes: an input unit that obtains track information of a handwriting input operation; a character recognition unit that performs character recognition on the basis of the track information; and a determination unit that determines, for each character obtained by the character recognition, whether or not there are adjacent blanks, on the basis of the size of the character and spaces between the character and characters adjacent to the character.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an information processing apparatus, a character input program, and a character input method.

  Large-screen displays and projectors are increasingly being used in meetings and brainstorming, where many people collaborate to create new things and ideas. Card tools and smart devices that encourage ideas Utilized workshops are provided.

  In such situations, users mainly write down ideas on a large screen by handwriting input (handwritten writing), but there is no ruled line like a notebook, so the size of characters for each user Are usually different. FIG. 1 is a diagram showing an example of handwriting input in a workshop, and shows a state in which users U1 and U2 freely handwritten character strings on a display D that can recognize handwriting input by a touch panel or the like.

  Until now, this type of meeting has progressed in the form of filling in paper sticky notes and imitation paper. However, by handling handwriting and materials electronically, past data can be stored and reproduced and Search, and reuse for other projects.

  As a technique for utilizing handwritten contents, there is a frameless handwritten character recognition technique for recognizing written handwriting and converting it into text.

  The written language is usually the language of the country in which the conference or meeting is held. Japanese is used in Japan, but in Japanese, there is usually no space between characters. Therefore, regarding the display of the recognition result of the frameless handwritten character recognition engine, the acquisition and display of the recognition result reflecting the space between characters has not been considered so far, and even if a plurality of words are written side by side, a series of characters The result is obtained as a column. FIG. 2 is a diagram showing an example of conventional handwritten character recognition that does not take into account white space. As shown on the right side, a character string having no white space is output for handwritten input on the left side.

  On the other hand, in Western languages, it is common practice to insert a space as a delimiter between words in a sentence. For this reason, in the Western handless character recognition engine without frame, the recognition result reflects the space between words. There is much to be done. FIG. 3 is a diagram showing an example of conventional handwritten character recognition in consideration of white space. As shown on the right side of the left handwritten input, a character string including white space is output.

  Note that the Western-frameless handwritten character recognition engine recognizes using a word dictionary to improve recognition accuracy, so if a word exists in the word dictionary, a white space will appear, but a word that does not exist in the word dictionary If it is, white space is not reflected. In FIG. 4, since none of the left handwritten input exists in the word dictionary, a character string having no spaces is output in the right character recognition result.

  On the other hand, although it is a recognition technique for printed characters, not handwritten characters, a technique for detecting a space between characters is disclosed (see Patent Document 1 and the like). As shown in FIG. 5, an average value between all characters is obtained, and a space between words is determined using a constant multiple thereof as a threshold value. This technique requires a plurality of characters, and cannot be applied because the average value cannot be calculated if the number of characters is two. In addition, since it is necessary to obtain the average value between characters, if Japanese and English with different character spacing are mixed, an appropriate average value cannot be obtained, so there is a possibility that appropriate white space detection cannot be performed. . In FIG. 6, Japanese “Apple” and English “Apple” are lined up on the left side as handwritten input. In the character recognition result on the right side, based on the threshold value based on the average value between all characters. Since a blank is judged, a blank is also inserted between each character of “apple”.

  In addition, as shown in FIG. 1, the character spacing varies depending on the size of the character depending on the user who fills in, the writing location, etc., so the average value between all characters is used as a reference. An appropriate determination cannot be made depending on the threshold value.

  Further, in FIG. 7, there is a case where the next next to a small character tends to be slightly separated from the entire character, as in the case of “ha” in the handwritten input on the left side. Depending on the threshold value based on the value, there is a high possibility that it is erroneously determined to be blank.

JP-A-5-1599098

  As described above, the conventional technique has a problem that the blank information input by the user cannot be appropriately reflected depending on the type and size of the handwritten character. As a result, there are problems that the recognition result characters are continuous, resulting in poor visibility and difficulty in reusing the recognition result.

  Therefore, an object of one aspect is to make it possible to determine the presence or absence of a blank regardless of the type and size of characters.

  An embodiment of the disclosure includes an input unit that acquires trajectory information of a handwriting input operation, a character recognition unit that performs character recognition based on the trajectory information, and for each character obtained by the character recognition, A determination unit that determines the presence or absence of an adjacent space based on an interval between the character and the adjacent character.

  Regardless of the type and size of characters, the presence or absence of a blank can be determined.

It is a figure which shows the example of the handwriting input in a workshop. It is a figure which shows the example of the handwritten character recognition which does not consider the conventional blank. It is a figure which shows the example of the handwritten character recognition which considered the conventional blank. It is a figure which shows the example of the character recognition using a word dictionary. It is a figure which shows the example of the method of detecting the space between the conventional characters. It is FIG. (1) which shows the example which determines the blank space by making the constant multiple of the average value between characters into a threshold value. It is FIG. (2) which shows the example which determines the blank using the constant multiple of the average value between characters as a threshold value. It is a figure which shows the function structural example of the information processing apparatus concerning 1st Embodiment. It is a figure which shows the hardware structural example of information processing apparatus. It is a flowchart which shows the example of a whole process of 1st Embodiment. It is a figure which shows the example of a screen. It is a flowchart which shows the example of a process after character recognition. It is a figure which shows the example of the information which a character recognition part outputs. It is a figure which shows the example of a virtual character frame. It is a figure which shows the example of a circumscribed rectangle. It is a figure which shows the example of the data hold | maintained internally. It is a figure which shows the function structural example of the information processing apparatus concerning 2nd Embodiment. It is a flowchart which shows the example of a process after character recognition. It is a figure which shows the function structural example of the information processing apparatus concerning 3rd Embodiment. It is a flowchart which shows the example of a process after character recognition. It is a figure which shows the example of a comparison of the center position of a virtual character frame. It is a figure which shows the function structural example of the information processing apparatus concerning 4th Embodiment. It is a flowchart which shows the example of a process after character recognition.

  Hereinafter, preferred embodiments of the present invention will be described.

<First Embodiment>
[Constitution]
FIG. 8 is a diagram illustrating a functional configuration example of the information processing apparatus 1 according to the first embodiment. In FIG. 8, the information processing apparatus 1 includes an input unit 11, a character recognition unit 12, a character size / interval ratio determination unit 13, a character space determination unit 14, a space information reflection unit 15, and a display unit 16. The information processing apparatus 1 may be a PC (Personal Computer), a smartphone, a tablet, a server device, or the like, or may be incorporated in a display or a projector.

  The input unit 11 has a function of inputting handwriting information as original information for character recognition. When the information processing apparatus 1 is used alone, handwriting information including coordinate information of the handwriting of the user's finger or touch pen is input by a coordinate detection function such as a touch panel. Further, when using a display equipped with a touch panel, a projector capable of touch pen input, or the like, the input unit 11 inputs handwriting information from those external devices via a direct connection or a network.

  The character recognition unit 12 has a function of performing frameless character recognition using a dictionary of character recognition patterns. The character size / interval ratio determination unit 13 has a function of obtaining a ratio between a character interval cut out at the time of character recognition in the character recognition unit 12 and a size of a character adjacent to the character interval. The inter-character space determining unit 14 has a function of determining, based on the character size / interval ratio obtained by the character size / interval ratio determining unit 13, whether the inter-character space is blank or not. The blank information reflection unit 15 has a function of reflecting the blank information in the character recognition result based on the blank information determined by the inter-character space determination unit 14. The display unit 16 has a function of displaying recognition results and input information.

  FIG. 9 is a diagram illustrating a hardware configuration example of the information processing apparatus 1. In FIG. 9, the information processing apparatus 1 includes a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, and a RAM (Random Access Memory) 103 connected to each other via a bus 107. Further, the information processing apparatus 1 includes a hard disk drive (HDD) / solid state drive (SSD) 104, a connection interface (I / F) 105, and a communication interface 106. The CPU 101 performs overall control of the operation of the information processing apparatus 1 by executing a program stored in the ROM 102 or the HDD / SSD 104 or the like using the RAM 103 as a work area. The connection I / F 105 is an interface with a device connected to the information processing apparatus 1. The communication I / F 106 is an interface for communicating with other information processing apparatuses via a network.

  The functions of the information processing apparatus 1 described with reference to FIG. 8 are realized by executing a predetermined program in the CPU 101. The program may be acquired via a recording medium, may be acquired via a network, or may be embedded in a ROM. Data to be referred to / updated during processing is held in the RAM 103 or the HDD / SSD 104.

[Overall operation]
FIG. 10 is a flowchart showing an example of the overall processing of the first embodiment. 10, when the user performs a handwriting input operation, the input unit 11 of the information processing apparatus 1 inputs handwriting information (two-dimensional coordinate information is continuous) (step S11), and the display unit 16 displays the handwriting. A handwriting corresponding to the information is displayed on the screen (step S12). FIG. 11A shows a state in which the user writes “A” by handwriting on the upper left of the screen and displays it.

  Returning to FIG. 10, when the input handwriting is not a character recognition instruction such as enclosing it with a frame (No in step S13), the process returns to standby for input of handwriting information (step S11). In FIG. 11B, “B” is written after “A” in FIG. 11A, and “C” is written in FIG. 11C after “AB” in FIG. Indicates the state.

  Returning to FIG. 10, if the instruction is for character recognition (Yes in step S13), the following processing is executed. For example, when a frame surrounding “ABC” is drawn as shown in FIG. 11D, processing is performed with “ABC” in the range surrounded by the frame as a recognition target.

  Returning to FIG. 10, the character recognition unit 12 performs character recognition based on the handwriting information within the range to be recognized (step S14). In character recognition, character handwriting is cut out from the recognition target range using a virtual character frame (the horizontal and vertical sizes are constant for each recognition process) that takes into consideration the placement of handwriting (horizontal writing, vertical writing, character spacing, etc.) Character candidates with high matching are extracted using a recognition pattern dictionary. As a result of character recognition, information on how the input handwriting group is divided as characters, information on virtual character frames when the characters are recognized, and recognition candidates for the divided characters are output.

  Next, the character size / interval ratio determining unit 13 calculates a circumscribed rectangle from the handwriting that forms each character, and obtains the size (height, width) of the character. Next, the interval between the circumscribed rectangles up to the character next to the character is obtained, and the ratio between the character size and the interval between the circumscribed rectangles is calculated (step S15).

  Next, the inter-character space determining unit 14 compares the character size obtained by the character size / interval ratio determining unit 13 with the space ratio between the circumscribed rectangles and a predetermined threshold value to determine whether or not it is a space ( Step S16).

  Next, the blank information reflecting unit 15 reflects the determination result of the blank information reflecting unit 15 on the character recognition result obtained by the character recognition unit 12 (step S17). The display unit 16 displays the result on the screen (step S18). FIG. 11E shows a state in which the frame for instructing character recognition is erased and the recognition result “ABC” is displayed side by side with the handwritten character. Note that the user may be able to make corrections to the recognition result, or when the user confirms the recognition result, the original handwritten character display is turned off and the recognition result is displayed at that position. It may be.

[Detailed operation]
FIG. 12 is a flowchart showing an example of processing after character recognition. In FIG. 12, the character size / interval ratio determining unit 13 acquires a character recognition result and character cutout information from the character recognition unit 12 (step S101). FIG. 13 shows an example of information output by the character recognition unit 12, and an example is shown in which a handwritten character “ABC DEF” in the frame of FIG. 13A is recognized. The numbers shown below the frame in FIG. 13A indicate the character numbers assigned in the character recognition process.

  FIG. 13B shows a specific example of data output by the character recognition unit 12. r indicates the character string of the first recognition result (recognition result with the highest degree of matching). stroke0,... indicates a handwriting group (stroke group) included in the characters of character numbers 0,..., and the numbers in braces indicate the stroke numbers. Code0,... indicate the characters of the recognition result of character numbers 0,. Frame0,... indicate the coordinate values of the four corners of the virtual character frame (character cutout frame) of character numbers 0,. FIG. 14 shows an example of a virtual character frame. In one recognition process, the vertical and horizontal sizes are fixed, and in the horizontal writing, the horizontal positions are aligned.

  Returning to FIG. 12, the number of characters cut out is set in the variable N (step S102), 0 is substituted into the variable i (step S103), and it is determined whether the variable i is less than N-1 (step S104). The following processing is repeated for the number of characters until the variable i reaches N-1.

  First, the character size / interval ratio determination unit 13 acquires circumscribed rectangle information from the character cutout information obtained from the character recognition unit 12 (step S105). In the most recent processing, it is sufficient if there is information about the circumscribed rectangles of the i-th character and i + 1-th character of interest, but the information of the circumscribed rectangles for all the characters up to the N-1th are summarized. May be obtained. The circumscribed rectangle is a rectangle that circumscribes the handwriting of each character, and acquires the width w and the height h. FIG. 15 shows an example of a circumscribed rectangle. The width w and the height h are different for each character, and the positions are not aligned. In the figure, a character spacing dist described later is also shown.

  Returning to FIG. 12, the character size / interval ratio determining unit 13 sets the larger one of the width w and the height h of the i-th character as the character size cf (step S106).

  Next, the character size / interval ratio determining unit 13 determines the i + 1th character side end of the circumscribed rectangle of the i-th character and the i of the circumscribed rectangle of the i + 1th character from the circumscribed rectangle information and the character cutout information. The distance at the end of the th character is acquired and set as the character spacing dist (step S107). For the last character in the recognition range, there is no circumscribed rectangle adjacent on the right side, so the character spacing dist is not obtained.

  Next, the character size / interval ratio determining unit 13 sets a value obtained by dividing the character interval dist by the character size cf as a character size / interval ratio rt (step S108).

  Next, the inter-character space determining unit 14 determines whether the character size / interval ratio rt is equal to or greater than a predetermined threshold th1 (step S109). If the character size / interval ratio rt is equal to or greater than the predetermined threshold th1 (step S109). Yes), it is determined that the character spacing dist is blank (step S110). The determination result is held internally. FIG. 16 is a diagram showing an example of internally held data, which is an example of the input handwriting “ABCDEF”. As shown in FIG. 16 (c), the space determination result by the inter-character space determination unit 14 includes “0” indicating no space and “1” indicating that there is a space in the lower row for each upper character number. Retained.

  Returning to FIG. 12, after the series of processes described above, the variable i is incremented (step S111), and the process returns to the loop end condition determination (step S104).

  In general, when the character size is large, the character spacing is widened, and when the character size is small, the character spacing is narrowed. Regardless, the presence or absence of a blank can be properly determined.

  On the other hand, when the loop is finished (No in Step S104), the blank information reflecting unit 15 reflects the blank information in the character recognition result (Step S112). For example, when the blank determination result shown in FIG. 16C is output for the character string of the recognition result shown in FIG. 16B, the second character is placed next to the character as shown in FIG. Inserts a space and shifts the third and subsequent characters up by one.

  Returning to FIG. 12, the character recognition result reflecting the blank information is displayed on the display unit 16 (step S113), and the process ends.

<Second Embodiment>
In the second embodiment, when there is a small character following a large character, it is prevented that the character interval immediately after that is erroneously determined to be a blank. That is, as shown in FIG. 7, there is a case where the next next to a small character tends to be slightly separated, like “tsu” in “Was” in the handwritten input on the left side. Also in the first embodiment described above, by appropriately setting the threshold value th1, it is possible to prevent erroneous determination of blank, but here, a method that can be determined more stably is proposed.

  FIG. 17 is a diagram illustrating a functional configuration example of the information processing apparatus 1 according to the second embodiment. In FIG. 17, the information processing apparatus 1 newly includes a character size determination unit 17-1 and a determination condition switching unit 17-2. The character size determination unit 17-1 has a function of determining the size of the entire character size of the focused character. The determination condition switching unit 17-2 has a function of switching the determination condition (threshold value) according to the determination result of the character size determination unit 17-1. Other configurations are the same as those shown in FIG. The hardware configuration is the same as that shown in FIG. The overall processing example is the same as that shown in FIG.

  FIG. 18 is a flowchart showing an example of processing after character recognition. In FIG. 18, steps S201 to S208 are the same as steps S101 to S108 in FIG. 18, steps S210 and S212 to S215 are the same as steps S109 to S113 in FIG.

  In FIG. 18, after calculating the character size / interval ratio rt, the character size determination unit 17-1 determines whether the ratio between the circumscribed rectangle width and the virtual character frame width is smaller than a predetermined value (step S209). Since the virtual character frame has a constant size in the processing of the same character string, if the ratio of the circumscribed rectangle width of the character of interest to the virtual character frame width is smaller than a predetermined value, it is small in the whole It can be determined whether it is a thing.

  If it is determined that the ratio of the circumscribed rectangle width to the virtual character frame width is smaller than the predetermined value (Yes in step S209), the blank is determined based on the threshold th2 having a value larger than the normal threshold th1 (step S211). .

<Third Embodiment>
In the third embodiment, line feed can be determined in addition to blanks.

  FIG. 19 is a diagram illustrating a functional configuration example of the information processing apparatus 1 according to the third embodiment. In FIG. 19, the information processing apparatus 1 newly includes a line feed determination unit 18. The line break determination unit 18 has a function of determining whether or not there is a line break from the center position of the virtual character frame. Other configurations are the same as those shown in FIG. The hardware configuration is the same as that shown in FIG. The overall processing example is the same as that shown in FIG.

  FIG. 20 is a flowchart showing an example of processing after character recognition. 20, steps S301 to S308 are the same as steps S101 to S108 in FIG. 20, steps S310, S311, and S313 to S315 are the same as steps S109 to S113 in FIG.

  In FIG. 20, after calculating the character size / interval ratio rt, the line feed determining unit 18 determines whether the center position of the adjacent virtual character frame is deviated from the size of the virtual character frame of interest (step S309). FIG. 21 is a diagram showing an example of comparison of the center positions of virtual character frames. If attention is paid to the upper right character “F”, the center position of the virtual character frame of the next character “A” in the lower row is shifted from the size of the virtual character frame of the character “F” (horizontal writing). In this case, the line is shifted in the y-coordinate direction), and it is determined as a line feed. The line feed may not be determined at the center of the virtual character frame, but may be performed at the upper end or the lower end of the virtual character frame.

  Returning to FIG. 20, when it is determined that the center position of the virtual character frame is shifted from the size of the virtual character frame (Yes in step S309), the line feed determination unit 18 determines that the line is a line feed (step S312). As the line feed determination result, for example, “2” indicating a line feed can be set in the blank determination result shown in FIG. Thereby, in the blank information reflection unit 15 (step S314), the blank information can be reflected in the recognized character string in addition to the blank.

  In addition, although the case where the function was added with respect to 1st Embodiment was demonstrated, you may perform the same function addition with respect to 2nd Embodiment.

<Fourth Embodiment>
In the fourth embodiment, not only the presence / absence of a blank but also a blank size (the number of blanks, etc.) can be determined.

  FIG. 22 is a diagram illustrating a functional configuration example of the information processing apparatus 1 according to the fourth embodiment. In FIG. 22, the information processing apparatus 1 newly includes a blank size determination unit 19. The blank size determination unit 19 has a function of determining a blank size (the number of blanks, etc.) for the character spacing determined to be blank. Other configurations are the same as those shown in FIG. The hardware configuration is the same as that shown in FIG. The overall processing example is the same as that shown in FIG.

  FIG. 23 is a flowchart showing an example of processing after character recognition. 23, steps S401 to S411 are the same as steps S101 to S111 in FIG. 23, steps S413 and S414 are the same as steps S112 and S113 in FIG.

  In FIG. 23, after the processing for the number of characters is completed, the blank size determination unit 19 determines a blank size (step S412). Specifically, each white space between characters judged to be white space is compared, the minimum white space size is obtained, and for the white space that is not the minimum white space, several times the minimum white space size is calculated. Insert multiple spaces.

  In addition, although the case where the function was added with respect to 1st Embodiment was demonstrated, you may perform the same function addition with respect to 2nd, 3rd Embodiment.

<Summary>
As described above, according to the present embodiment, it is possible to determine the presence or absence of a blank regardless of the type and size of characters. As a result, the visibility of the recognition result is improved and the recognition result can be easily reused.

  In the above, it demonstrated by preferred embodiment. While specific embodiments have been illustrated and described herein, it will be apparent that various modifications and changes may be made thereto without departing from the broad spirit and scope as defined in the claims. . That is, it should not be construed as being limited by the details of the specific examples and the accompanying drawings.

Regarding the above description, the following items are further disclosed.
(Appendix 1)
An input unit for acquiring locus information of a handwriting input operation;
A character recognition unit that performs character recognition based on the locus information;
For each character obtained by the character recognition, a determination unit that determines the presence or absence of an adjacent blank based on the size of the character and the interval between the character adjacent to the character;
An information processing apparatus comprising:
(Appendix 2)
The determination unit determines the presence or absence of a blank by comparing a ratio of a character size and a distance between characters adjacent to the character with a threshold value.
The information processing apparatus according to appendix 1, wherein
(Appendix 3)
The determination unit changes the threshold for a small character in a character string that simultaneously recognizes characters,
The information processing apparatus according to Supplementary Note 2, wherein
(Appendix 4)
For each character obtained by the character recognition, based on the position of the cutout frame of the character, determine the presence or absence of a line break,
The information processing apparatus according to any one of supplementary notes 1 to 3, wherein:
(Appendix 5)
For the determined white space, determine the size of the other white space based on the minimum white space size,
The information processing apparatus according to any one of appendices 1 to 4, wherein
(Appendix 6)
Acquire trajectory information of handwriting input operation,
Character recognition is performed based on the locus information,
For each character obtained by the character recognition, based on the size of the character and the interval between the character adjacent to the character, determine the presence or absence of adjacent white space,
A character input program for causing a computer to execute processing.
(Appendix 7)
The determination process determines the presence or absence of a blank by comparing the ratio of the character size and the distance between the character adjacent to the character with a threshold.
The character input program according to Supplementary Note 6, wherein
(Appendix 8)
In the determination process, the threshold value is changed for a small character in a character string that simultaneously recognizes characters.
The character input program according to appendix 7, wherein
(Appendix 9)
For each character obtained by the character recognition, based on the position of the cutout frame of the character, determine the presence or absence of a line break,
The character input program according to any one of appendices 6 to 8, characterized in that:
(Appendix 10)
For the determined white space, determine the size of the other white space based on the minimum white space size,
The character input program according to any one of appendices 6 to 9, characterized in that:
(Appendix 11)
Acquire trajectory information of handwriting input operation,
Character recognition is performed based on the locus information,
For each character obtained by the character recognition, based on the size of the character and the interval between the character adjacent to the character, determine the presence or absence of adjacent white space,
A character input method characterized in that a computer executes processing.
(Appendix 12)
The determination process determines the presence or absence of a blank by comparing the ratio of the character size and the distance between the character adjacent to the character with a threshold.
The character input method according to Supplementary Note 11, wherein
(Appendix 13)
In the determination process, the threshold value is changed for a small character in a character string that simultaneously recognizes characters.
The character input method according to Supplementary Note 12, wherein:
(Appendix 14)
For each character obtained by the character recognition, based on the position of the cutout frame of the character, determine the presence or absence of a line break,
14. The character input method according to any one of appendices 11 to 13, characterized in that:
(Appendix 15)
For the determined white space, determine the size of the other white space based on the minimum white space size,
15. The character input method according to any one of appendices 11 to 14, characterized in that:

DESCRIPTION OF SYMBOLS 1 Information processing apparatus 11 Input part 12 Character recognition part 13 Character size and space | interval ratio determination part 14 Inter-character space determination part 15 Space information reflection part 16 Display part 17-1 Character size determination part 17-2 Judgment condition switching part 18 Line feed determination Part 19 Blank size determination part

Claims (7)

An input unit for acquiring locus information of a handwriting input operation;
A character recognition unit that performs character recognition based on the locus information;
For each character obtained by the character recognition, a determination unit that determines the presence or absence of an adjacent blank based on the size of the character and the interval between the character adjacent to the character;
An information processing apparatus comprising: The determination unit determines the presence or absence of a blank by comparing a ratio of a character size and a distance between characters adjacent to the character with a threshold value.
The information processing apparatus according to claim 1. The determination unit changes the threshold for a small character in a character string that simultaneously recognizes characters,
The information processing apparatus according to claim 2. For each character obtained by the character recognition, based on the position of the cutout frame of the character, determine the presence or absence of a line break,
The information processing apparatus according to any one of claims 1 to 3. For the determined white space, determine the size of the other white space based on the minimum white space size,
The information processing apparatus according to claim 1, wherein the information processing apparatus is an information processing apparatus. Acquire trajectory information of handwriting input operation,
Character recognition is performed based on the locus information,
For each character obtained by the character recognition, based on the size of the character and the interval between the character adjacent to the character, determine the presence or absence of adjacent white space,
A character input program for causing a computer to execute processing. Acquire trajectory information of handwriting input operation,
Character recognition is performed based on the locus information,
For each character obtained by the character recognition, based on the size of the character and the interval between the character adjacent to the character, determine the presence or absence of adjacent white space,
A character input method characterized in that a computer executes processing.

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