CN107831918B - Hand-written Chinese character input method based on half square braille digital coding - Google Patents
Hand-written Chinese character input method based on half square braille digital coding Download PDFInfo
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- CN107831918B CN107831918B CN201711116909.3A CN201711116909A CN107831918B CN 107831918 B CN107831918 B CN 107831918B CN 201711116909 A CN201711116909 A CN 201711116909A CN 107831918 B CN107831918 B CN 107831918B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
- G06F3/0233—Character input methods
Abstract
The invention provides a handwritten Chinese character input method based on half square braille digital coding, which comprises the following steps: s1, splitting the Braille into left and right half squares, and carrying out digital coding according to the half square Braille patterns; s2, setting a handwriting input area on the handwriting input equipment; s3, inputting two-digit digital codes representing braille by a user through a handwriting gesture in the handwriting input area; s4, recognizing the handwriting gesture of the user through handwriting input equipment, and acquiring two-digit digital codes input by the user; s5, respectively reducing the two-digit numerical codes into corresponding half-square Braille patterns, and splicing the left half-square Braille pattern and the right half-square Braille pattern into one square Braille pattern according to the left and right sequence; and S6, converting the Braille into Chinese characters. In the invention, 8 different patterns possibly appearing in the half square braille are respectively mapped to 8 different numbers; the user only needs to remember the mapping relation, so that the trouble of memorizing a large number of handwritten graphs is eliminated, and the memory and writing difficulty of the Braille handwriting input method is greatly reduced.
Description
Technical Field
The invention relates to the field of handwriting input methods, in particular to a handwriting Chinese character input method based on half-square braille digital coding.
Background
With the development of science and technology, more and more intelligent science and technology products are brought into our lives; in recent years, smart phones and tablet computers are more and more popular, and touch screen technologies in the smart phones and the tablet computers are more and more mature. However, the popularization of the touch screen technology in the intelligent device brings inconvenience to the blind.
Braille, also called braille and raised letters, is specially designed for blind people and is sensed by touch. The basic unit of braille is "square", and one braille is composed of a small square matrix of 6 dot positions in 3 rows and 2 columns, and as shown in fig. 1, the left side is respectively called 1, 2 and 3 dots from top to bottom, and the right side is respectively called 4, 5 and 6 dots from top to bottom. Each point has two states of convex or flat, so that 64 changes are available in braille on one side, and 64 symbols can be represented.
At present, books and the like read by the blind are all marked with three-dimensional (raised) braille by a braille imprinter, and the blind reads the braille by touching the braille through fingers; when the electronic books are on the internet or read, screen reading software is used, Chinese characters are converted into sounds through a text-to-speech conversion technology, and the books are read through listening, which is also the most common method at present. At present, the smart phone also has screen reading software with more perfect functions.
The screen reading software only solves the problem of information reading of the blind, and the problem of information input of the blind on the intelligent equipment still needs to be solved. In the past, on computer equipment externally connected with a physical keyboard, a blind person can still finish inputting character information by touch. However, on the touch screen, a virtual keyboard is adopted, a plurality of key positions are represented in one area, and the blind cannot see the keyboard or cannot sense the keyboard through touch on the screen.
To solve this problem, some handwriting input methods specially for the blind have appeared on the market. However, in braille, there are 21 initials and 35 finals, and 56 braille symbols in total, so 56 handwritten patterns need to be designed. Therefore, in the existing braille handwriting input method, the related handwritten patterns are too many, and the design of the handwritten patterns lacks simple regularity, so that the braille handwriting input method is very unfavorable for memory; its popularization and use have been greatly hindered.
Disclosure of Invention
The invention aims to provide a handwritten Chinese character input method based on half square braille digital coding, which aims to overcome the defects in the prior art, reduce the memory and writing difficulty of the braille handwritten input method and improve the accuracy of system identification.
In order to achieve the purpose, the invention adopts the following technical scheme:
a handwritten Chinese character input method based on half square braille digital coding comprises the following steps:
s1, splitting the Braille into left and right half squares, and carrying out digital coding according to the half square Braille patterns: splitting one party of braille into a left half square and a right half square, wherein each half square has 3 point positions and 8 kinds of change patterns; respectively mapping 8 kinds of change patterns of half square braille to any 8 numbers between 1-9, so that one square braille can be represented by a two-digit number code;
s2, setting a handwriting input area on the handwriting input equipment;
s3, inputting two-digit digital codes representing braille by a user through a handwriting gesture in the handwriting input area;
s4, recognizing the handwriting gesture of the user through handwriting input equipment, and acquiring two-digit digital codes input by the user;
s5, respectively reducing the two-digit numerical codes into corresponding half-square Braille patterns, and splicing the left half-square Braille pattern and the right half-square Braille pattern into one square Braille pattern according to the left and right sequence;
s6, converting the braille into Chinese characters;
wherein, S3 specifically includes:
s301, in the process of inputting one-side braille, when any position of a handwriting input area in a user starting hand point is used as an initial position, the initial position is used as a center, and virtual key areas with numbers 1-9 are generated in the handwriting input area according to the direction distribution of each number key in a nine-square grid numeric keyboard; wherein, the area of the initial position is a virtual key area with the number of 5;
s302, the user continuously slides or clicks in the virtual key areas of the numbers 1-9 to input two-digit numerical codes respectively representing the left half-square braille pattern and the right half-square braille pattern.
Further, in S3, the method of inputting a two-digit code representing braille by a handwriting gesture in the handwriting input area is:
when the number code of the left half is 5, the input gesture of one party of braille is as follows: clicking a finger on the handwriting area to confirm the initial position and input a number '5', and then clicking a finger on the virtual key area where the number code in the right half direction is positioned;
when the number code of the left half is not 5 and the number codes of the left half and the right half are the same, the input gesture of the Braille at one party is as follows: pointing the middle handwriting area by hands to confirm the initial position, and then immediately releasing the virtual key area where the left and right half-square digital codes are located;
when the number code of the left half is not 5 and the connecting line of the number code positions of the left half and the right half is in the horizontal, vertical or 45-degree angle direction, the input gesture of the Braille is as follows: pointing the middle handwriting area by hands to confirm the initial position, then marking the virtual key area where the number codes in the left half direction are located, and then turning back the virtual key area where the number codes in the right half direction are located;
when the number code of the left half is not 5, and the position connection line of the number code of the left half and the right half is not horizontal, not vertical and not in the direction of 45 degrees, the input gesture of the Braille is as follows: and pointing the middle handwriting area by a hand, drawing a virtual key area where the left half digital code is located, and then releasing the finger and pointing the virtual key area where the right half digital code is located.
Further, in S1, 8 kinds of variation patterns of the half-square braille are respectively mapped onto 8 numbers other than 5 between 1 to 9;
in S3, the method of inputting a two-digit number code representing braille by a handwritten gesture in the handwriting input area includes:
when the left and right half digital codes are the same, the input gesture of one party of Braille is as follows: pointing the middle handwriting area by hands to confirm the initial position, and then immediately releasing the virtual key area where the left and right half-square digital codes are located;
when the connecting line of the digital coding positions of the left half and the right half is in the horizontal, vertical or 45-degree angle direction, the input gesture of the Braille at one party is as follows: pointing the middle handwriting area by hands to confirm the initial position, then marking the virtual key area where the number codes in the left half direction are located, and then turning back the virtual key area where the number codes in the right half direction are located;
when the connection line of the digital coding positions of the left half and the right half is not horizontal, not vertical and not in the direction of 45 degrees, the input gesture of one party of the Braille is as follows: and pointing the middle handwriting area by a hand, drawing a virtual key area where the left half digital code is located, and then releasing the finger and pointing the virtual key area where the right half digital code is located.
Further, in S4, the method for recognizing the handwriting gesture of the user through the handwriting input device to obtain the two-digit code input by the user includes:
when the handwriting gesture of the user is turned, the number corresponding to the virtual key area where the turning point is located is identified as the number input by the user;
when the fingers of the user leave the handwriting input equipment, the numbers corresponding to the virtual key area where the points where the fingers of the user leave are identified as the numbers input by the user;
in the process of inputting one side of braille, if the handwriting input device recognizes that the user has input only one number, it is determined that the user has recognized two identical numbers.
Further, in S3, when the finger of the user moves out of the handwriting input area, the handwriting input is determined to be an invalid input.
Further, before converting the braille into the chinese characters in S6, the method further includes:
s3 to S5 are repeated to obtain continuous braille.
Further, when the multi-party braille is continuously input, the handwriting input area is idle for a period of time as an interval identification mark between adjacent braille after one party of braille is input.
Further, when the multi-party braille is continuously input, a confirmation gesture is input in the handwriting input area as an interval identification mark between adjacent braille after one party of braille is input.
Further, in S301, when virtual key areas of numbers 1-9 are generated, a Sudoku is generated in the handwriting input area, and the numbers represented by the virtual key areas are defined according to the distribution of the number keys in the Sudoku numeric keyboard; the boundary of each number virtual key area around the number "5" extends to the boundary of the handwriting input area.
Further, in S301, when generating virtual key regions of numbers 1 to 9, a certain range around the initial position is set as a virtual key region of number "5", and then virtual key regions representing 8 numbers in a sector radial shape are generated in corresponding directions around the virtual key region of number "5" according to the relative positions of the other 8 numbers in the squared numeric keyboard and number "5"; the boundary of each number virtual key area around the number "5" extends to the boundary of the handwriting input area.
In the invention, the braille is split by taking a half square as a unit, and 8 different patterns possibly appearing in the half square braille are respectively mapped to 8 different numbers; the user only needs to remember the mapping relation between 8 types of half-square braille patterns and 8 numbers of characters, and the handwriting rules provided by the invention are combined, so that the handwriting input process can be easily completed by the user, the trouble of memorizing a large number of handwritten patterns is saved, and the memory and writing difficulty of the braille handwriting input method is greatly reduced. Meanwhile, based on the simple and visual handwriting input mode, the recognition of the handwriting input equipment to the handwriting gesture is further simplified, and the defect that the complex handwriting gesture is easy to be recognized by mistake in the prior art is overcome.
Drawings
Fig. 1 is a schematic view of the structure of braille.
Fig. 2 is a schematic flow chart of a handwritten chinese character input method based on half-square braille numeric coding according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a first scheme for generating a virtual key area in S301 according to a first embodiment of the present invention.
Fig. 4 is a schematic diagram of a second scheme for generating a virtual key area in S301 according to the first embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example one
As shown in FIG. 2, the handwritten Chinese character input method based on half square Braille numerical coding provided by the invention comprises the following steps:
s1, splitting the Braille into left and right half squares, and carrying out digital coding according to the half square Braille patterns: splitting one square of braille into a left half and a right half, wherein each half contains 3 point positions, and each point position has two changes of 'convex (solid) "and' flat (hollow)" according to the formation rule of the braille, so that each half of braille has 8 possible change patterns; respectively mapping 8 kinds of change patterns of half square braille to any 8 numbers between 1-9, so that one square braille can be represented by a two-digit number code;
s2, setting a handwriting input area on the handwriting input equipment;
s3, inputting two-digit digital codes representing braille by a user through a handwriting gesture in the handwriting input area;
s4, recognizing the handwriting gesture of the user through handwriting input equipment, and acquiring two-digit digital codes input by the user;
s5, respectively reducing the two-digit numerical codes into corresponding half-square Braille patterns, and splicing the left half-square Braille pattern and the right half-square Braille pattern into one square Braille pattern according to the left and right sequence;
and S6, converting the Braille into Chinese characters.
S1 and S2 are both basic settings that are formed at the beginning of the construction of the handwritten chinese character input method, and after the basic settings are set, they are repeatedly used as a basic frame of the input method, and it is not necessary to perform pattern mapping or setting once every braille input. The fixed mapping relation between the half square braille patterns and the numbers is more beneficial to the memory of the user, and the input method can be mastered with less memory. S3-S6 are specific handwriting input, capture and conversion processes, which are steps executed in a loop for each input.
Further, S3 specifically includes:
s301, in the process of inputting one-side braille, when any position of a handwriting input area in a user starting hand point is used as an initial position, the initial position is used as a center, and virtual key areas with numbers 1-9 are generated in the handwriting input area according to the direction distribution of each number key in a nine-square grid numeric keyboard; wherein, the area of the initial position is a virtual key area with the number of 5;
s302, the user continuously slides or clicks in the virtual key areas of the numbers 1-9 to input two-digit numerical codes respectively representing the left half-square braille pattern and the right half-square braille pattern.
The embodiment of the invention provides two feasible virtual key area generation schemes. The first scheme is shown in fig. 3. In S301, when generating virtual key areas of numbers 1 to 9, a nine-grid is generated in the handwriting input area, and numbers represented by the virtual key areas are defined according to the distribution of the number keys in the nine-grid numeric keypad.
A second approach to generating a virtual key region is shown in fig. 4. In S301, when generating virtual key regions of numbers 1 to 9, a certain range around the initial position is set as a virtual key region of number "5", and then, based on the relative positions of the other 8 numbers in the nine-grid numeric keypad and the number "5", sector-shaped radial virtual key regions each representing 8 numbers are generated in the corresponding orientation around the virtual key region of number "5". Wherein, the fan-shaped angle of each fan-shaped radial virtual key area is 45 degrees.
In the above two schemes, the boundary of each number virtual key area around the number "5" extends to the boundary of the handwriting input area. This is done in order to emphasize the relative orientation of the other numbers with respect to the number "5" without strictly defining their actual position in the handwriting input area. For example, the upper left of "5" is "1", and as long as the finger is drawn from "5" to the upper left, regardless of the length of the path, the finger represents "1" as long as it is moved and not moved out of the handwriting input area. In comparison, the second scheme emphasizes the relative position between each number and the initial position (number '5'), so that the blind user can perform handwriting input in a position sensing-based mode, the inconvenience of the blind user in the aspect of vision during handwriting input is fully considered, and the mistaken input is avoided to the maximum extent.
Further, in S3, the method of inputting a two-digit code representing braille by a handwriting gesture in the handwriting input area is:
when the number code of the left half is 5, the input gesture of one party of braille is as follows: clicking a finger on the handwriting area to confirm the initial position and input a number '5', and then clicking a finger on the virtual key area where the number code in the right half direction is positioned;
when the number code of the left half is not 5 and the number codes of the left half and the right half are the same, the input gesture of the Braille at one party is as follows: pointing the middle handwriting area by hands to confirm the initial position, and then immediately releasing the virtual key area where the left and right half-square digital codes are located;
when the number code of the left half is not 5 and the connecting line of the number code positions of the left half and the right half is in the horizontal, vertical or 45-degree angle direction, the input gesture of the Braille is as follows: pointing the middle handwriting area by hands to confirm the initial position, then marking the virtual key area where the number codes in the left half direction are located, and then turning back the virtual key area where the number codes in the right half direction are located;
when the number code of the left half is not 5, and the position connection line of the number code of the left half and the right half is not horizontal, not vertical and not in the direction of 45 degrees, the input gesture of the Braille is as follows: and pointing the middle handwriting area by a hand, drawing a virtual key area where the left half digital code is located, and then releasing the finger and pointing the virtual key area where the right half digital code is located.
As an improvement, in the handwriting input process at S3, if the finger of the user moves out of the handwriting input area, the handwriting input is determined to be an invalid input.
Corresponding to the above handwriting method, in S4, the handwriting gesture of the user is recognized by the handwriting input device, and the method of acquiring the two-digit code input by the user is as follows:
when the handwriting gesture of the user is turned, the number corresponding to the virtual key area where the turning point is located is identified as the number input by the user;
when the fingers of the user leave the handwriting input equipment, the numbers corresponding to the virtual key area where the points where the fingers of the user leave are identified as the numbers input by the user;
in the process of inputting one side of braille, if the handwriting input device recognizes that the user has input only one number, it is determined that the user has recognized two identical numbers.
In S6, the braille may be converted into chinese characters by the smart device. The intelligent device can be an intelligent terminal such as a smart phone, a tablet computer or a PC. In the prior art, there are more existing methods and software for converting braille into chinese characters, and the related technologies are becoming mature, so the specific conversion process involved in S6 is not discussed in the present invention.
As a modification, in S6, before converting the braille into the chinese characters, the method further includes: s3 to S5 are repeated to obtain continuous braille. The method has the advantages that the braille is uniformly converted into the Chinese characters after the user inputs a section of braille, and the meaning expression accuracy rate in Chinese character conversion is greatly improved.
Further, when the multi-party braille is continuously input, there are various methods for distinguishing adjacent braille to prevent the right half-digit code of the former braille and the left half-digit code of the latter braille from being erroneously combined into one braille. For example, after one side of braille is input, the handwriting input area is idle for a period of time to be used as an interval identification mark between adjacent braille; for another example, after one braille is input, a confirmation gesture is input in the handwriting input area as an interval recognition mark between adjacent braille.
Example two
The embodiment is improved on the basis of the first embodiment. Specifically, the handwritten Chinese character input method based on half-square braille numeric coding provided by the embodiment includes the following steps:
s1, splitting the Braille into left and right half squares, and carrying out digital coding according to the half square Braille patterns: splitting one square of braille into a left half and a right half, wherein each half contains 3 point positions, and each point position has two changes of 'convex (solid) "and' flat (hollow)" according to the formation rule of the braille, so that each half of braille has 8 possible change patterns; respectively mapping 8 kinds of change patterns of half square braille to 8 numbers except 5 between 1-9, so that one square braille can be represented by two-digit number codes;
s2, setting a handwriting input area on the handwriting input equipment;
s3, inputting two-digit digital codes representing braille by a user through a handwriting gesture in the handwriting input area;
s4, recognizing the handwriting gesture of the user through handwriting input equipment, and acquiring two-digit digital codes input by the user;
s5, respectively reducing the two-digit numerical codes into corresponding half-square Braille patterns, and splicing the left half-square Braille pattern and the right half-square Braille pattern into one square Braille pattern according to the left and right sequence;
and S6, converting the Braille into Chinese characters.
It should be noted that the greatest difference between the present embodiment and the first embodiment is: excluding the number "5" when mapping between the half-square braille pattern and the numerical code is performed in S1; the 8 kinds of variation patterns of the half square braille are respectively mapped to 8 numbers except 5 between 1-9.
The mapping mode can further simplify the input gesture of one party of Braille in the invention, so that a user does not need to consider whether the number code of the left half party is 5 or not during input, and a handwriting rule is reduced.
Specifically, in S3 of the embodiment of the present invention, the method for inputting a two-digit number code representing one party of braille by a handwriting gesture in the handwriting input area includes:
when the left and right half digital codes are the same, the input gesture of one party of Braille is as follows: pointing the middle handwriting area by hands to confirm the initial position, and then immediately releasing the virtual key area where the left and right half-square digital codes are located;
when the connecting line of the digital coding positions of the left half and the right half is in the horizontal, vertical or 45-degree angle direction, the input gesture of the Braille at one party is as follows: pointing the middle handwriting area by hands to confirm the initial position, then marking the virtual key area where the number codes in the left half direction are located, and then turning back the virtual key area where the number codes in the right half direction are located;
when the connection line of the digital coding positions of the left half and the right half is not horizontal, not vertical and not in the direction of 45 degrees, the input gesture of one party of the Braille is as follows: and pointing the middle handwriting area by a hand, drawing a virtual key area where the left half digital code is located, and then releasing the finger and pointing the virtual key area where the right half digital code is located.
Other details of the embodiment of the present invention are the same as those of the first embodiment, and are not repeated herein.
In the invention, the braille is split by taking a half square as a unit, and 8 different patterns possibly appearing in the half square braille are respectively mapped to 8 different numbers; the user only needs to remember the mapping relation between 8 types of half-square braille patterns and 8 numbers of characters, and the handwriting rules provided by the invention are combined, so that the handwriting input process can be easily completed by the user, the trouble of memorizing a large number of handwritten patterns is saved, and the memory and writing difficulty of the braille handwriting input method is greatly reduced. Meanwhile, based on the simple and visual handwriting input mode, the recognition of the handwriting input equipment to the handwriting gesture is further simplified, and the defect that the complex handwriting gesture is easy to be recognized by mistake in the prior art is overcome.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A handwritten Chinese character input method based on half square braille digital coding is characterized by comprising the following steps:
s1, splitting the Braille into left and right half squares, and carrying out digital coding according to the half square Braille patterns: splitting one party of braille into a left half square and a right half square, wherein each half square has 3 point positions and 8 kinds of change patterns; respectively mapping 8 kinds of change patterns of half square braille to any 8 numbers between 1-9, so that one square braille can be represented by a two-digit number code;
s2, setting a handwriting input area on the handwriting input equipment;
s3, inputting two-digit digital codes representing braille by a user through a handwriting gesture in the handwriting input area;
s4, recognizing the handwriting gesture of the user through handwriting input equipment, and acquiring two-digit digital codes input by the user;
s5, respectively reducing the two-digit numerical codes into corresponding half-square Braille patterns, and splicing the left half-square Braille pattern and the right half-square Braille pattern into one square Braille pattern according to the left and right sequence;
s6, converting the braille into Chinese characters;
wherein, S3 specifically includes:
s301, in the process of inputting one-side braille, when any position of a handwriting input area in a user starting hand point is used as an initial position, the initial position is used as a center, and virtual key areas with numbers 1-9 are generated in the handwriting input area according to the direction distribution of each number key in a nine-square grid numeric keyboard; wherein, the area of the initial position is a virtual key area with the number of 5;
s302, a user continuously slides or clicks in the virtual key areas with the numbers of 1-9 to input two-digit numerical codes respectively representing left and right half-square braille patterns;
in S3, the method of inputting a two-digit number code representing braille by a handwritten gesture in the handwriting input area includes:
when the number code of the left half is 5, the input gesture of one party of braille is as follows: clicking a finger on the handwriting area to confirm the initial position and input a number '5', and then clicking a finger on the virtual key area where the number code in the right half direction is positioned;
when the number code of the left half is not 5 and the number codes of the left half and the right half are the same, the input gesture of the Braille at one party is as follows: pointing the middle handwriting area by hands to confirm the initial position, and then immediately releasing the virtual key area where the left and right half-square digital codes are located;
when the number code of the left half is not 5 and the connecting line of the number code positions of the left half and the right half is in the horizontal, vertical or 45-degree angle direction, the input gesture of the Braille is as follows: pointing the middle handwriting area by hands to confirm the initial position, then marking the virtual key area where the number codes in the left half direction are located, and then turning back the virtual key area where the number codes in the right half direction are located;
when the number code of the left half is not 5, and the position connection line of the number code of the left half and the right half is not horizontal, not vertical and not in the direction of 45 degrees, the input gesture of the Braille is as follows: and pointing the middle handwriting area by a hand, drawing a virtual key area where the left half digital code is located, and then releasing the finger and pointing the virtual key area where the right half digital code is located.
2. The handwritten Chinese character input method based on half-square braille numerical coding according to claim 1, characterized in that 8 kinds of variation patterns of half-square braille are mapped to 8 numbers other than 5 between 1 to 9, respectively, in S1;
in S3, the method of inputting a two-digit number code representing braille by a handwritten gesture in the handwriting input area includes:
when the left and right half digital codes are the same, the input gesture of one party of Braille is as follows: pointing the middle handwriting area by hands to confirm the initial position, and then immediately releasing the virtual key area where the left and right half-square digital codes are located;
when the connecting line of the digital coding positions of the left half and the right half is in the horizontal, vertical or 45-degree angle direction, the input gesture of the Braille at one party is as follows: pointing the middle handwriting area by hands to confirm the initial position, then marking the virtual key area where the number codes in the left half direction are located, and then turning back the virtual key area where the number codes in the right half direction are located;
when the connection line of the digital coding positions of the left half and the right half is not horizontal, not vertical and not in the direction of 45 degrees, the input gesture of one party of the Braille is as follows: and pointing the middle handwriting area by a hand, drawing a virtual key area where the left half digital code is located, and then releasing the finger and pointing the virtual key area where the right half digital code is located.
3. The handwritten Chinese character input method based on half-square braille digital coding of claim 2, characterized in that in S4, the method for recognizing the handwriting gesture of the user through the handwriting input device and obtaining the two-digit digital coding input by the user is:
when the handwriting gesture of the user is turned, the number corresponding to the virtual key area where the turning point is located is identified as the number input by the user;
when the fingers of the user leave the handwriting input equipment, the numbers corresponding to the virtual key area where the points where the fingers of the user leave are identified as the numbers input by the user;
in the process of inputting one side of braille, if the handwriting input device recognizes that the user has input only one number, it is determined that the user has recognized two identical numbers.
4. The method of claim 2, wherein the handwritten chinese character input is determined as invalid input if the user' S finger is moved out of the handwriting input area at S3.
5. The method of inputting handwritten chinese characters based on semi-square braille numerical coding according to claim 1, further comprising, before converting the braille into chinese characters at S6:
s3 to S5 are repeated to obtain continuous braille.
6. The method of claim 5, wherein when the braille lettering is continuously input, the handwritten input area is left unused for a certain time as an interval recognition mark between adjacent braille lettering every time one braille lettering is input.
7. The method of claim 5, wherein a confirmation gesture is inputted as an interval recognition mark between adjacent braille upon completion of inputting one braille while the braille is continuously inputted.
8. The handwritten Chinese character input method based on half-square braille numerical coding of claim 1, characterized in that when virtual key areas of numbers 1-9 are generated in S301, a nine-square grid is generated in the handwritten input area, and the numbers represented by each virtual key area are defined according to the distribution of each number key in the nine-square grid numeric keyboard; the boundary of each number virtual key area around the number "5" extends to the boundary of the handwriting input area.
9. The handwritten Chinese character input method based on half-square braille numeric coding of claim 1, characterized in that, in S301, when generating virtual key areas of numbers 1 to 9, a certain range around the initial position is set as the virtual key area of number "5", and then according to the relative positions of the other 8 numbers in the squared numeric keypad and the number "5", the virtual key areas in sector-shaped radial form representing the 8 numbers respectively are generated at the corresponding positions around the virtual key area of number "5"; the boundary of each number virtual key area around the number "5" extends to the boundary of the handwriting input area.
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