JP2733232B2 - Character processing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a character processing method, and more particularly to a character processing method for performing character processing based on an input coordinate sequence. 2. Description of the Related Art Conventionally, in a character processing method in which a coordinate sequence can be input and similar characters are determined by comparing the input coordinate sequence with a character recognition dictionary, errors in character entry and erroneous recognition are prevented. In the correction operation, re-enter the desired character coordinate sequence, or instruct to redisplay the trajectory corresponding to the previously input character coordinate sequence, and perform the trajectory correction operation on the redisplayed trajectory. And a method of re-recognizing a coordinate sequence corresponding to the corrected trajectory. [Problems to be Solved by the Invention] However, in the above-described conventional technology, even when the character “large” is corrected to the character “thick”, for example,
The whole locus of the character must be re-entered, or the locus of "large" must be redrawn, "," must be added, and the process of recognizing the entire locus of "fat" must be performed again. There is a problem in that the input amount increases and the operator becomes more painful, or the amount of the trajectory to be recognized increases and the probability of erroneous recognition increases. [Means for Solving the Problems] In order to solve the above problems, the present invention is to input a coordinate sequence and determine a character displayed at a position where the coordinate sequence is input as a character to be corrected. Then, as a retouched pattern, the input coordinate sequence is recognized, and a character to be corrected,
Searching a dictionary in which a retouched pattern and a newly obtained character are stored as a set to obtain a character corresponding to the determined corrected character and the recognized retouched pattern, A character processing method for outputting characters obtained by searching the dictionary is provided. In order to solve the above-mentioned problem, the present invention preferably obtains the center of gravity of the input coordinate sequence, and determines the character displayed at the position of the center of gravity as the corrected character. Embodiment FIG. 1 to FIG. 3 show a first embodiment of the present invention.
FIG. 1 is a drawing that best illustrates the features of the present invention, in which 1 is a state before character correction in an information processing apparatus embodying the present invention, 2 is a state where characters are being corrected, and 3 is a character correction. This is the later state. Reference numeral 11 denotes a display which is a coordinate plane for displaying characters, reference numeral 12 denotes a tablet which is a coordinate input device superimposed on the display 11, and reference numeral 13 denotes a pen which writes characters on the tablet 12.
1, a tablet 12 and a pen 13 constitute a display-integrated coordinate input device. 14 is a random access memory (hereinafter referred to as RAM) for storing the code of the character displayed on the display 11, 15 is a RAM for storing a coordinate sequence input from the tablet 12, and 16 is a memory for temporarily storing other data. RAM 17 is a read-only memory (hereinafter referred to as a ROM) in which rules for correcting characters are stored in advance. Further, a central processing unit (hereinafter referred to as a CPU) and a ROM for storing a program exist in addition to those shown in the figure, and perform information processing as a microcomputer. In the above configuration, for example, if the character string "Ohira Yo" is displayed on the display 11 in the state 1 before the correction, "Large", "Fla", "Yo" are sequentially started from the address 1000H of the RAM 14.
Is stored for each two bytes. The address of RAM14 is the position where the character is displayed and 1
Corresponds to one. In this state, the character "Large" is displayed using the pen 13 in order to correct the character "Large" to the character "Bold" from this state. Then RAM1
The coordinate sequence input from the tablet 12 is stored in order from the address 2000H of 5. Based on this, address value 1000H, character code "large", pattern code "," in order from address 3000H of RAM16
Is stored. This means that the pattern "," has been added to the character "large" stored at the address 1000H in the RAM 14. When the combination of the character code “large” and the pattern code “,” is retrieved from the ROM 17, the combination is stored at the address 4000H and the following address 4002, and the character code “bold” is obtained by referring to the following address 4004H. can get. Therefore, the character code "thick" is set at address 1000H
Is displayed, and the character "bold" is displayed instead of the character "large" on the display 11, thereby completing the correction of the character and entering the state 3. Further, the flow of processing in this embodiment will be described in detail with reference to the flowchart shown in FIG. First step 10
When a handwritten locus is written on the tablet 12 by the pen 13 in 1, a coordinate sequence of the locus is input and 2000H of the RAM 15 is input.
The addresses are stored in order from the address. Next, in step 102, the center of gravity is obtained by calculating the average of the respective coordinate values of the coordinate sequence, and it is considered that the character displayed at the coordinates of the center of gravity has been corrected, and the position corresponding to the character is determined. The address value of RAM 14 is stored at address 3000 of RAM 16. Next, in step 103, the character code of the character to be corrected is read from the address in the RAM 14 and stored in the RAM 16 at address 3002. Then, in step 104, it is checked whether the character is blank. If blank, proceed to step 105. In step 105, since the trajectory is written on a blank space, it is regarded as a new character, and character recognition is performed based on the coordinate sequence to obtain a character code. For the character recognition, a known online character recognition method is used. Subsequently, the character code recognized in step 106 is stored in the RAM 16 at address 3000.
Store it at the address of AM14. In step 107, a new character is displayed on the display 11. On the other hand, if the character is not blank in step 104, the process proceeds to step 108. In step 108, since the trajectory is a trajectory written on the already displayed character, it is regarded as a correction of the character by rewriting the pattern (hereinafter referred to as a retouched pattern), the pattern is recognized based on the coordinate sequence, and the code of the rewritten pattern is written. Get. The method of recognizing the retouched pattern is the same as the method of character recognition. The code of the recognized retouching pattern is RA
Store it at address 3004H of M16. As shown in FIG. 3, the ROM 17 stores a set of a character code of a character to be corrected for all the characters that can be corrected, a pattern code of a retouched pattern, and a character code newly obtained by the correction. Therefore, in step 109, the ROM 17 is searched for a combination of the character code of the character to be corrected stored at the address 3002 of the RAM 16 and the pattern code of the retouched pattern 4 stored at the address 3004H. ROM1 at step 110
If the combination exists in step 7, the process proceeds to step 111. In step 111, the character code of the character newly obtained by the correction stored in the combination searched in the ROM 17 is stored in the RAM 16 at the address 3000H.
It is stored in the address of M14. In step 107, a new character is displayed on the display 11. Also step
If the combination does not exist in the ROM 17 in 110, the process is terminated without performing the correction. With the above technology, the character code can be changed only by adding a part of the character from the characters already displayed. In the present embodiment, the correction of the kanji has been described. However, it is possible to correct alphanumeric characters, kana, and other symbols similar to characters in the same manner. Embodiment 2 FIGS. 4 and 5 show a second embodiment of the present invention.
FIG. 4 is a view well illustrating the features of the present embodiment. In FIG. 4, reference numeral 21 denotes a state before character correction in an information processing apparatus according to the present embodiment, 22 denotes a state in which characters are being corrected, and 23 denotes a character in the same manner. This is the state after the correction. Reference numeral 31 denotes a display which is a coordinate plane for displaying characters, and reference numeral 32 denotes a coordinate input device superimposed on the display 31. Tablet 33 is
A pen for writing characters on the tablet 32.
A display-integrated coordinate input device is constituted by 31, tablet 32, and pen 33. Reference numeral 34 denotes a RAM for storing a code and a position of a character displayed on the display 31, reference numeral 35 denotes a RAM for storing a coordinate sequence input from the tablet 32, and reference numeral 36 denotes a RAM for temporarily storing other data. Further, a CPU and a ROM for storing programs exist in addition to those shown in the figure, and perform information processing as a microcomputer. When equation that Deisupurei 31 2 ^3/4 in a state 21 prior example modified in the configuration described above is displayed
The character code of the character "-" in order from the address 1000H in the RAM 34, the x coordinate x _{1 at} the left end of the position where the character is displayed, the y coordinate y _{1 at the} upper end, the x coordinate x _{2 at the} right end, and the lower end y-coordinate y ₂ is stored by each 2 bytes. Where x ₁
≦ x ₂ , y ₁ ≦ y ₂ . Subsequently, the character codes and the coordinates of the left end, the upper end, the right end, and the lower end of the characters are stored for all the characters displayed except the character "2". The order of the letters is the order in which the letters were written. In order to extend the character "-" to the right from this state,
The state 22 is obtained by adding a pattern "-" further rightward from the right end where the character "-" is displayed by using. Then, the coordinate sequence input from the tablet 32 is sequentially stored from the address 2000H of the RAM 35. Based on this
RAM36 address value 1000H from 3000H address in the order of, the coordinate values X _1,
The coordinate value Y ₁ , the coordinate value X ₂ , and the coordinate value Y ₂ are stored. This is RAM34
For the character stored at the address 1000H, the x coordinate X _{1 at the} left end, the y coordinate Y _{1 at the} upper end, the x coordinate X _{2 at the} right end, and the y coordinate Y _{2 at the} lower end
Means that the pattern was added. Where x ₁
And X ₁ , y ₁ and Y ₁ , x ₂ and X ₂ , y ₂ and Y ₂ , respectively, and determine the coordinates of the left, top, right and bottom edges of the revised character The left end, upper end, and lower end where X ₂ is the new right end are x ₁ , y ₁ , y ₂
Remains. 1006H to where x ₂ of RAM34 has been stored
Address to a state 23 characters modification is completed by displaying an enlarged length of Deisupurei 31 on letter "over" to the right stores the X _2. Further, the flow of processing in this embodiment will be described in detail with reference to the flowchart shown in FIG. First step 20
When a handwritten locus is written on the tablet 32 by the pen 33 in 1, a coordinate sequence of the locus is input and 2000H of the RAM 35 is input.
The addresses are stored in order from the address. The next maximum value of the X ₁ the minimum x-coordinate of the coordinate sequence, the minimum value of the y-coordinate Y _1, x-coordinate at the step 202 and the maximum value of X _2, y coordinate and Y _2, it is stored in the RAM34 Assuming that the x coordinate of the left end of a given character is x ₁ , the y coordinate of the upper end is y ₁ , the x coordinate of the right end is x ₂ , and the y coordinate of the lower end is y ₂ , x ₁ ≦ X ₂ and x ₂ If ≧ X ₁ and y ₁ ≦ Y ₂ and y ₂ ≧ Y ₁ , the coordinate sequence is considered to overlap the character. If not, check if it overlaps with another character. If there is no character overlapping the coordinate sequence in step 203, the process proceeds to step 204. In step 204, since the trajectory is written in a place where nothing is written, it is regarded as a new character and character recognition is performed based on the coordinate sequence to obtain a character code. For the character recognition, a known online character recognition method is used. Then securing the area for storing the new character code and the position on the RAM34 in step 205, stores the recognized character code and the _{X 1, Y 1, X 2} , the value of Y ₂ described above. In step 206, a new character is displayed on the display 31. On the other hand, if there is a character overlapping with the coordinate sequence in step 203, the process proceeds to step 207. Step 207
Is a trajectory written on a character that is already displayed, so it is regarded as a correction by a retouched pattern. X ₁ , y ₁ , x ₂ , y ₂ and the X ₁ , Y ₁ , X ₂ , Y ₂ for the overlapping characters are compared with each other, and the smaller of x ₁ and X ₁ , the smaller of y ₁ and Y ₁ smaller, the larger of x ₂ and X _2, the left end towards the display position of the new character each larger of y ₂ and Y _2, which upper end, right end, the lower end. Then the left end of the new character in step 208, the x ₁ of the upper end, right end, the coordinate of the lower end RAM 34, y _1, x
₂ and y ₂ are stored at the address where they were stored. In step 206, a new character is displayed on the display 31. At this time, the character is enlarged as needed. With the above technique, by adding a character from above the already displayed character, the position information of the character can be changed. The character code and the position information can be changed at the same time by combining with the first embodiment. [Effects of the Invention] As described above, according to the present invention, a new character is obtained from a combination of a recognition result of an input coordinate sequence and a character displayed at a position where the coordinate sequence is input. Output, the amount of entry and re-recognition processing by the operator when correcting characters that have already been recognized and displayed can be reduced, operability can be improved, and the recognition rate can be further improved. . As described above, according to the present invention, the character to be corrected is determined from the center of gravity of the input coordinate sequence,
An appropriate character can be determined as a character to be corrected from a coordinate sequence input with a planar spread.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a state before, during and after character correction in an information processing apparatus embodying the present invention, and FIG. 2 is a first embodiment of the present invention. FIG. 3 is a diagram showing the contents of the ROM 17 of FIG. 1, and FIG. 4 is a diagram showing the contents before, during, and after character correction in the information processing apparatus embodying the second embodiment of the present invention. FIG. 5 is a flow chart showing the processing of the second embodiment of the present invention. 1 is a state before the character correction in the information processing apparatus embodying the present invention, 2 is a state in which the character is being corrected, 3 is a state in which the character is also corrected, 11 is a display, 12 is a tablet, 13 is a pen, and 14 is a displayed state. RAM, which stores the code of the character being input, 15 is a RAM, which stores the input coordinate sequence, 16 is a RAM, which temporarily stores other data, 17 is a ROM, which stores rules for correcting characters, In the information processing apparatus according to the second embodiment, a state before character correction, 22 is a state in which the character is being corrected, 23 is a state after the correction, 31 is a display, 32 is a tablet, 33 is a pen, and 34 is displayed. Memorize the character code and position
A RAM 35 is a RAM for storing the input coordinate sequence, and a RAM 36 is for temporarily storing other data.

Claims (1)

(57) [Claims] A coordinate sequence is input, a character displayed at the position where the coordinate sequence is input is determined as a character to be corrected, and the input coordinate sequence is recognized as a retouching pattern. A pattern and a dictionary in which newly obtained characters are stored as a set are searched to obtain a character corresponding to the determined corrected character and the recognized retouched pattern. A character processing method characterized by outputting characters obtained by searching a dictionary. 2. 2. The character processing method according to claim 1, wherein a center of gravity of the input coordinate sequence is obtained, and a character displayed at the position of the center of gravity is determined as the corrected character.