CN113568514B - Writing data acquisition pen, handwriting processing method and device - Google Patents
Writing data acquisition pen, handwriting processing method and device Download PDFInfo
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- CN113568514B CN113568514B CN202110857299.2A CN202110857299A CN113568514B CN 113568514 B CN113568514 B CN 113568514B CN 202110857299 A CN202110857299 A CN 202110857299A CN 113568514 B CN113568514 B CN 113568514B
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- 230000008569 process Effects 0.000 claims abstract description 29
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- 238000005070 sampling Methods 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 10
- 238000013480 data collection Methods 0.000 claims description 6
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- 238000012552 review Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
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- Theoretical Computer Science (AREA)
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- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention discloses a writing data acquisition pen, a writing processing method and a writing processing device, wherein the pen comprises: a pen body and a pen cap body; the pen body is provided with a sensing device and a containing cavity for containing the pen refill; the sensing device is used for collecting pressure feedback data and nib position information generated in the writing process of the nib part of the pen refill; the pen is provided with a storage device which is used for storing and/or transferring the pressure feedback data and the pen point position information; the pen cap body is provided with a communication module; the communication module is used for transmitting the pressure feedback data and the pen point position information to the handwriting processing equipment for handwriting processing, the process does not need additional complex operation of a user, the storage of the handwriting data is not limited by scene and position change, the handwriting processing equipment is used for processing and presenting the handwriting data, and the user can conveniently review and search.
Description
Technical Field
The invention relates to the technical field of intelligent writing, in particular to a writing data acquisition pen, a handwriting processing method and a handwriting processing device.
Background
For recording and identifying writing contents, the prior art focuses on solving the speed and accuracy of character identification, and the prior art designs a medium-sized or even large-sized special writing device for generating writing data aiming at specific scenes; or shooting the handwriting by adopting shooting equipment and storing the handwriting in the form of pictures in the equipment, and identifying the characters and the information in the pictures through a specific character identification algorithm.
The handwriting data generating device in the scheme has huge volume and high manufacturing cost, and cannot be applied to daily life and work; the method has the advantages that the method is complex in operation flow, and a final effect is influenced by a plurality of technical factors in the process of shooting pictures, such as performance fluctuation of shooting equipment, ambient light intensity during shooting or definition of the writing content, and the like, so that a final processing result is influenced.
Disclosure of Invention
The present invention has been made in view of the above problems, and provides a writing data collecting pen, a writing processing method and apparatus which overcome or at least partially solve the above problems.
According to one aspect of the present invention, there is provided a writing data collection pen comprising a pen body and a pen cap body; the pen body is provided with a sensing device and a containing cavity for containing the pen refill; the sensing device is used for collecting pressure feedback data and nib position information generated in the writing process of the nib part of the pen refill; the pen is provided with a storage device which is used for storing and/or transferring the pressure feedback data and the pen point position information; the pen cap body is provided with a communication module; and the communication module is used for transmitting the pressure feedback data and the pen point position information to handwriting processing equipment for handwriting processing.
According to another aspect of the present invention, there is provided a handwriting processing method, comprising:
Acquiring pressure feedback data and nib position information sent by a writing data acquisition pen, and constructing handwriting data containing the pressure feedback data and the nib position information;
Determining size information and page writing direction information required by presenting a page according to the handwriting data;
and connecting coordinate points corresponding to the pen point position information according to the size information required by the presented page and the page writing direction information to form writing content.
According to still another aspect of the present invention, there is provided a handwriting processing apparatus, comprising: the handwriting data construction module is used for acquiring pressure feedback data and nib position information sent by the writing data acquisition pen and constructing handwriting data containing the pressure feedback data and the nib position information;
The handwriting data processing module is used for determining the size information required by the page presentation and the page writing direction information according to the handwriting data;
And the writing content construction module is used for connecting coordinate points corresponding to the pen point position information according to the size information required by the presented page and the page writing direction information to form writing content.
According to yet another aspect of the present invention, there is provided a computing device comprising: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the operation corresponding to the handwriting processing method.
According to still another aspect of the present invention, there is provided a computer storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to the handwriting processing method described above.
According to the writing data acquisition pen tool, the writing processing method and the writing processing equipment, a sensing device and a containing cavity for containing a pen core are arranged on a pen body; a storage device is arranged in the pen; the pen cap body is provided with the communication module, the pressure feedback data and the pen point position information can be collected and stored in a centralized mode through the storage device, and then the pressure feedback data and the pen point position information are transmitted to the handwriting processing equipment through the communication module to be processed, the process does not need additional complex operation of a user, the storage of the handwriting data is not limited by scene and position change any more, the handwriting data is processed and presented through the handwriting processing equipment, and the user can conveniently review and search.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic diagram showing a cross-sectional structure of a pen body of a writing data collection pen according to an embodiment of the present invention;
fig. 2 shows a schematic diagram of a pen cap body of a writing data collection pen according to an embodiment of the present invention;
FIG. 3 shows a flowchart of a handwriting processing method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a handwriting processing apparatus according to an embodiment of the present invention;
FIG. 5 illustrates a schematic diagram of a computing device provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 1 and 2 show schematic views of an embodiment of a writing data collection pen according to the present invention, the pen comprising a pen body 01 and a pen cap 02; fig. 1 shows a schematic cross-sectional structure of a pen body 01 of the writing data acquisition pen tool, wherein the pen body 01 is provided with a sensing device and a containing cavity 03 for containing a pen core; the sensing device is used for collecting pressure feedback data and nib position information generated in the writing process of the nib part of the pen core; the pen is provided with a storage device for storing and/or restoring the pressure feedback data and the pen tip position information. Fig. 2 shows a schematic structural diagram of a pen cap body 02 of the writing data acquisition pen tool, and as shown in fig. 2, the pen cap body 02 is provided with a communication module; the communication module is used for transmitting the pressure feedback data and the pen point position information stored in the second storage module to the handwriting processing equipment for handwriting processing.
In an alternative, the sensing means comprises at least a pressure sensor 04 and a position sensor 05; as shown in fig. 1, the pressure sensor 04 is disposed at the pen tail end of the pen body 01, and is used for converting the pressure generated by the pen point part of the pen core in the writing process into pressure feedback data to be output; the position sensor 05 is arranged at the pen head end of the pen body 01 and is used for collecting pen point position information of the pen point part in the writing process.
Specifically, the pen body 01 can adapt to the refill of the mainstream neutral pen on the market, the refill needs to be installed before use, pressure feedback data generated during the process of writing a pen point is monitored through independent working of the pressure sensor 04 and the real-time pen point position information of the pen point in the process of writing the pen point, wherein the position sensor 05 samples and stores the two-dimensional position information of the pen point during the process of writing the pen point according to a certain frequency, namely, a two-dimensional coordinate point in a current writing area is used as the pen point position information, and the pressure sensor 04 acquires the pressure feedback data corresponding to each two-dimensional coordinate point in real time.
Further, the pressure sensor 04 is a miniature pressure sensor, and the position sensor 05 is a miniature infrared position movement sensor; the pressure sensor 04 is used for monitoring pressure change of the pen point of the pen core in contact with the paper surface during writing of the pen core; specifically, when a new pen core is replaced in the pen body 01, the initial pressure value will also be different due to the process error of the pen core, so that an initial value updating function needs to be set for the pressure sensor 04, for example, a stable pressure value after the pen core is filled can be used as a new initial zero value; when the pen point is drawn through the paper surface, pressure change is generated, and the position sensor 05 arranged at the pen head end of the pen body 01 is awakened to enter a working state, so that the writing position of the pen point is monitored, and the processing process is as follows: setting the nib position information when the position sensor 04 is awakened to be Loc 0 = (0, 0), continuously sampling and monitoring the nib position information by the position sensor 05 in the writing process, wherein the sampling and monitoring frequency is marked as F, the unit is hertz, namely F nib position point data are taken per second, the nib position information is Loc i at the moment i, the nib pressure feedback data are F i at the moment i, and the handwriting data ternary data set representation is defined: data i＝(xi,yi, fi), wherein nib position information Loc i＝(xi,yi).
In particular, a determination scheme of the writing completion state is also required to be preset to determine that the handwriting data acquisition is completed, and the specific determination scheme may be: if the pressure feedback data does not change within the preset time period, the writing is judged to be suspended, the pressure sensor 04 stops pressure detection, the position sensor 05 is closed and no more nib position information is acquired, wherein the preset time period can be 10 minutes and the like.
In an alternative manner, the storage device includes at least a first storage module (not shown in the figure) provided to the pen body 01 and a second storage module (not shown in the figure) provided to the pen cap body 02; the first storage module is used for storing the pressure feedback data and the nib position information, and transmitting the stored pressure feedback data and nib position information to the second storage module for transfer through the communication module.
It should be specifically noted that, the collected pressure feedback data and the nib position information are temporarily stored by the first storage module, and because the pen body 01 is used as a main part for collecting handwriting data, the primary function point is to adapt to the neutral pen to replace a core, and integrate pressure and nib position monitoring and provide for a user to write on, so that the volume and the appearance of the pen body 01 are considered, the storage capacity of the first storage module is smaller, and the stored data need to be subjected to secondary dumping by the pen cap body 02. In addition, the specific installation position of the first storage module is not limited in this embodiment, the specific form of the first storage module may be set according to the actual requirement, and the first storage module may be built in the pen body 00 by using a memory device with a micro storage capacity.
In particular, the pen cap body 02 matched with the pen body 01 is responsible for secondary storage and external transmission of pressure feedback data and pen point position information, and the second storage module in the pen cap body 02 has a larger data storage space, so that the pressure feedback data and pen point position information of the first storage module can be transferred to the second storage module through multiple times of communication with the pen body 01, and when the pressure feedback data and pen point position information collected in the pen cap body 02 are stored to one or more writing processes, the pressure feedback data and pen point position information are transmitted to handwriting processing equipment through the communication module, handwriting data are stored and presented by the handwriting processing equipment, meanwhile, the handwriting processing equipment can also process and analyze the handwriting data, and automatically generate a content retrieval catalog, so that a user can conveniently review and retrieve written contents. The handwriting processing device may be configured to erase the data in the second storage module after the second storage module transmits the pressure feedback data and the pen point position information to the handwriting processing device, thereby cleaning the space of the second storage module. The handwriting processing device can be a computer and other devices.
It should be noted that, in this embodiment, the specific installation position of the second storage module is not limited, the specific form thereof may be set according to the actual requirement, and the second storage module may be a memory device with a micro storage capacity and be built in the pen cap body 02.
In an alternative way, the pen body 01 is provided with a first data contact 06, and the pen cap body 02 is provided with a second data contact 07 corresponding to the first data contact 06; when the pen body 01 is sleeved with the pen cap body 02, the first data contact 06 and the second data contact 07 are connected, so that a data path is formed between the pen body 01 and the pen cap body 02, and the first storage module transmits stored pressure feedback data and pen point position information to the second storage module for storage.
Specifically, when writing is completed once, the user locks the pen body 01 and the pen cap 02, the first data contact 06 of the pen body 01 is connected with the second data contact 07 of the pen cap 02, a data path is formed between the pen body 01 and the pen cap 02, and the pressure feedback data and the nib position information of the writing stored in the first storage module are transmitted to the second storage module through the data path. After the transmission is completed, the content stored in the first storage module is emptied. The nib position information Loc 0 is also cleared and the next writing is reset.
In an alternative, the communication module may comprise: and the data interface is used for being connected with handwriting processing equipment through a data line.
Specifically, in order to communicate with the handwriting processing device, the pen cap body 02 further includes a data interface, and the data interface may be a type-c interface or a USB interface.
In particular, the communication module may further include a wireless communication unit such as infrared, bluetooth, wiFi, etc., and the pen cap body 01 may also communicate with the handwriting processing device through a wireless communication manner.
In an optional mode, still be provided with on the pen cap body 02 and hang 08, for better protection data interface, can set up the pen on the pen cap body and hang and place the recess, place recess swing joint with pen and hang 08 and pen cap body 02 through the pen, data interface sets up in the pen and hangs 08 and place the recess inside, the inboard that pen is hung 08 and cover promptly, when pen cap body 02 needs to communicate with handwriting processing equipment, can push out pen and hang 08 to pen cap body 01 afterbody, anticlockwise rotatory pen is hung 08 to certain angle (like 30 degrees), can expose data interface.
In an alternative way, the battery module 09 is further arranged in the pen body 01, and the battery module 09 can adopt a built-in button battery for providing electric energy for the writing data acquisition pen; the pen cap body 02 is further provided with an indicator light 10 for indicating the state of charge of the battery module and/or the data transmission state between the first memory module and the second memory module.
Specifically, the indicator light 10 of the pen body 01 is electrically connected to the battery module 09, and the indicator light 10 is used for prompting the electric quantity state, for example, prompting through a red breathing light in the low electric quantity state; when the first storage module and the second storage module carry out data transmission, the indicator lamp can also carry out data transmission state prompt, for example, the green breathing lamp in the data transmission process flashes, and the green breathing lamp stops flashing and is extinguished after the data transmission is completed. It should be noted that, in order to distinguish the state of charge from the state of data transmission, the state of charge and the state of data transmission may be indicated by different colored breathing lamps.
By adopting the pen tool of the embodiment, the pen body is provided with the pressure sensor, the position sensor, the first storage module and the containing cavity for containing the pen refill; the pen cap body is provided with the second storage module and the communication module, pressure feedback data and pen point position information can be collected and stored in a centralized mode through the first storage module, and then the pen point position information is dumped to the second storage module through the communication module and then transmitted to handwriting processing equipment for handwriting data processing, the data collection and dumping process is not perceived by a user, the process does not need additional complex operation of the user, the storage of the handwriting data is not limited by scene and position change, the handwriting data is processed and presented through the handwriting processing equipment, and the user can conveniently review and search. Compared with the existing writing data recording tool, the pen provided by the embodiment is more convenient and practical, and because the pen body can be compatible with the traditional pen core on the market, the cost is low, and the practicability is high.
FIG. 3 shows a flowchart of an embodiment of a handwriting processing method of the present invention, as shown in FIG. 3, comprising the steps of:
step S310: and acquiring pressure feedback data and nib position information sent by the writing data acquisition pen, and constructing handwriting data containing the pressure feedback data and the nib position information.
In the step, the writing data acquisition pen transmits the collected pressure feedback data and the nib position information to the handwriting processing equipment through the communication module, and the handwriting processing equipment constructs handwriting data according to the pressure feedback data and the nib position information. The handwriting data may be formed in one or more writing processes, so that the handwriting data needs to be firstly sorted and processed according to time and paragraphs, so that the handwriting data is convenient for users to review and apply. The handwriting data may be in the form of a triplet of data, specifically denoted as data i＝(xi,yi,Fi), where Loc i is nib position information at time i and Loc i＝(xi,yi);Fi is pressure feedback data of the nib at time i.
Step S320: and determining the size information required for presenting the page and the page writing direction information according to the handwriting data.
In an alternative manner, step S320 further includes: acquiring initial point position information in pen point position information in handwriting data; traversing the nib position information and searching nib position information farthest from the initial point position information; and determining the size information required for presenting the page according to the initial point position information and the farthest nib position information.
In the step, firstly, segmentation processing is carried out on handwriting data according to nib position information in the handwriting data, specifically, grouping processing is carried out on the handwriting data according to writing content forming time and paragraphs according to nib position information in the handwriting data, and a plurality of data sets are obtained; since the position of the pen point position information in the handwriting data is (0, 0) when the new writing record starts, the handwriting data is a ternary data set containing pressure feedback data and the pen point position information: data i＝(xi,yi,Fi), wherein the pen tip position information Loc i＝(xi,yi),Fi is pressure feedback data, so that by traversing the handwriting data to be processed currently, each time (0, F i) is retrieved, (wherein F i is not equal to 0), namely, the coordinate position is taken as a grouping node to form a data set, after the handwriting data is segmented, the size information required by the segment of the rendered page needs to be determined according to the content of each segment.
Specifically, the method for determining the size information required for rendering the page is as follows: traversing handwriting data of a current data set, acquiring initial point position information in pen point position information in each handwriting data of the data set, and searching pen point position information (max (x i),max(yi)) farthest from the initial point position information, wherein the calculation formulas of page width and page length are as follows (1) and (2):
Page width = max (xi) +0.1max (max (x i)), where F i corresponding to x i is not equal to 0; (1)
Page length = max (y i)+0.1max(max(yi)), where F i corresponding to y i is not equal to 0; (2)
Note that, since some acquired handwriting data are coordinates of transition positions between characters and need to be ignored, coordinate points (max (x i),max(yi)) of the real and effective handwriting position information in the above formula (1) and formula (2) are points where the corresponding pressure feedback data F i is not 0; in addition, since page edge margins are to be reserved for contents, a term of 0.1 coefficient is added.
In an alternative manner, step S320 further includes steps 1-6:
Step 1, determining the starting position information of the current row/column.
Specifically, the page writing direction includes horizontal writing, vertical writing and the like, so that the page writing direction can be determined by determining whether the current writing position is a line change or a column change, specifically, if the current writing position is a column change, the corresponding page writing direction is a horizontal writing direction, and if the current writing position is a column change, the corresponding page writing direction is a vertical writing direction, so that the page writing direction can be determined according to the comparison result by determining the horizontal distance difference and the vertical distance difference of any two groups of nib position information in handwriting data, and comparing the two groups of horizontal distance differences and the two groups of vertical distance differences.
In this step, first, a coordinate point corresponding to the start position information of the current line/column of handwriting data is determined as (Xi 0,Yi0). Generally, for simplicity of calculation process, initial point position information in pen point position information selected when calculating the size required for presenting the page can be selected as initial position information of the current row/column, so that after determining the size required for presenting the page, the writing direction of the page can be determined without resampling for many times, and the sampling times are reduced.
And step 2, randomly reading one piece of pen point position information from the handwriting data to serve as current sampling position information.
Specifically, one piece of pen point position information is arbitrarily read from pen point position information in handwriting data as current sampling position information, a coordinate point of the current sampling position information is recorded as (Xi i,Yii), and the read mark is made on the coordinate point of the current sampling position information.
And 3, calculating the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction.
In this step, a previous sampling coordinate point (Xi pre,Yipre) of the coordinate point of the current sampling position information is acquired; according to the coordinate point (Xi i,Yii) of the current sampling position and the coordinate point (Xi pre,Yipre) of the previous sampling position, and the starting position information (Xi 0,Yi0), the distance difference d between the transverse writing direction (i.e., the X-axis direction) and the longitudinal writing direction (i.e., the Y-axis direction) relative to the current starting position (Xi 0,Yi0) is calculated respectively, and the following formulas (3) - (6) are calculated:
d(Xipre)＝|Xipre-Xi0|； (3)
d(Yipre)＝|Yipre-Yi0|； (4)
d(Xii)＝|Xii-Xi0|； (5)
d(Yii)＝|Yii-Yi0|； (6)
wherein d (Xi pre) and d (Yi pre) represent the difference in distance between the coordinate point (Xi pre,Yipre) of the previous sample position information and the start position (Xi 0,Yi0) on the X-axis and the Y-axis, respectively; d (Xi i) and d (Yi i) represent differences in distances between the coordinate point (Xi i,Yii) of the current sampling position information and the start position (Xi 0,Yi0) on the X-axis and the Y-axis, respectively.
And 4, respectively comparing the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction with the distance difference between the previous sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction, and determining page writing direction information according to the comparison result.
Specifically, according to the calculation result of the step 3, if d (Yi i) is far greater than d (Yi pre) and d (Xi i) is less than d (Xi pre), the current writing position is indicated to be line-wrapping writing, and the current page writing direction is horizontal writing; if d (Xi i) is far greater than d (Xi pre) and d (Yi i) is less than d (Yi pre)), then the current writing position is the column-change writing, and the current page writing direction is judged to be the longitudinal writing; wherein, by presetting the distance difference threshold value, the absolute value of the distance difference between d (Yi i) and d (Yi pre) or the absolute value of the distance difference between d (Xi i) and d (Xi pre) is larger than or equal to the distance difference threshold value, it can be determined that d (Yi i) is far larger than d (Yi pre) or d (Xi i) is far larger than d (Xi pre).
Step 5, judging whether the pen point position information in the handwriting data is read; if yes, ending execution; if not, executing step 6.
Specifically, whether the pen point position information in the handwriting data is read or not is judged through the read mark of the coordinate point of the pen point position information in the handwriting data, if yes, page writing direction judgment of the handwriting data is completed, and if not, page writing directions of the rest handwriting data need to be continuously determined.
And step 6, updating the initial position information by using the current sampling position information, and then jumping to execute the step 2.
Specifically, if the pen point position information in the handwriting data is read, execution is finished, and if the unread pen point position information exists in the handwriting data, the fact that the processing of the handwriting data is not finished is described, and step 6 is executed. In step 6, (Xi 0,Yi0) is replaced by the coordinate point of the current sampling position, the replaced (Xi 0,Yi0) is used as the current sampling position, and then the steps 2-5 are continuously executed.
Step S330: and connecting coordinate points corresponding to the pen point position information according to the size information required by the page presentation and the page writing direction information to form writing contents.
In the step, according to the size information and the page writing direction information required by the page presentation, one round of traversal is performed on the handwriting data of the coordinate points (Xi 0,Yi0) and the coordinate points (Xi pre,Yipre) corresponding to the pen point position information, the handwriting data are connected, and writing content is displayed.
The method comprises the following steps: adjacent effective coordinate points, for example, (Xi 0,Yi0) and (Xi pre,Yipre) are connected. It should be noted that, some coordinate points cannot be connected, so that effective handwriting points need to be determined, and the effective handwriting points are connected to form writing content; for example, one of the current coordinate point and the previous coordinate point corresponding to the current coordinate point in the traversal process is not an effective handwriting point, that is, the frequency of receiving pressure feedback data by the current coordinate point and the previous coordinate point corresponding to the current coordinate point in the nib position information is not coincident with the normal frequency, for example, when a user clicks the nib or a child frequently during unconscious writing, the frequency of receiving pressure feedback data between the current coordinate point and the previous coordinate point corresponding to the current coordinate point acquired under the two conditions exceeds the frequency of normal writing, so that the frequency of receiving pressure feedback data during normal writing can be preset, when the frequency of receiving pressure feedback data between two adjacent coordinate points is detected to exceed the preset frequency, the current coordinate point is not an effective handwriting point, and in this case, no connection processing is performed between the current coordinate point and the previous coordinate point corresponding to the current coordinate point. Or some characters with a plurality of strokes exist in handwriting data, and the plurality of strokes cannot be written out by one stroke, so that coordinate points of two different strokes are not connected; for example, the Chinese character "two", the coordinate point corresponding to the end point of the first horizontal axis and the coordinate point of the start point of the second horizontal axis should not be connected. Therefore, for the two cases, the processing can be performed by defining a distance threshold epsilon between adjacent coordinate points, namely, calculating the plane distance between the current coordinate point (namely, the coordinate point of the current sampling position information) and the previous coordinate point (namely, the coordinate point of the previous sampling position information) in the traversal process, if the plane distance is smaller than epsilon, performing connection processing, otherwise, disconnecting. After each line/column is processed, the handwriting data processing process of the next line/column is entered, when the adjacent coordinate points of the new line/column are connected, the coordinate point (Xi 0,Yi0) of the initial position information is required to be updated into the coordinate point (Xi i,Yii) of the current sampling position information, and the process is circularly carried out to form writing contents.
After the written content is formed, the written content may be output as a written content file, which may specifically be a pdf file, each page of the written content file being presented in the form of a handwriting trace dot pattern.
In an alternative, the method further comprises: forming a writing content file according to the writing content; performing word recognition on each page of content in the written content file, and performing word segmentation and screening on the recognized word content to obtain directory index keywords; and setting a catalog for the writing content file according to the catalog index key words.
Specifically, the content search directory may be constructed from the written content. The specific mode is that each page of content of the writing content file is subjected to character recognition, character recognition software is accessed to recognize the handwriting character content, word segmentation processing is carried out on the recognized character content, noun phrases are extracted, the occurrence times of the phrases are counted, sorting processing is carried out from less to more according to the occurrence times, and a plurality of phrases with the highest occurrence times are screened out from the word phrases as directory index keywords of the current page of content; adding a catalog to the writing content file according to the catalog index keywords, wherein catalog entry contents are catalog index keywords extracted from pages and sorted and screened, each catalog index keyword is associated with a page number corresponding to the page content where the catalog index keyword is located in the writing content file, and a user can jump to the designated page number through the catalog entry contents when looking up the writing content file.
By adopting the method of the embodiment, the handwriting data is processed in a time-sharing and segmentation way to form a data group, and the size information and the page writing direction information required by the page presentation are determined according to the nib position information and the pressure feedback data of the data group; connecting coordinate points corresponding to the pen point position information according to the size information and the page writing direction information required by the page presentation to form writing content, so that the user can conveniently review and store the writing content; meanwhile, a content retrieval catalog is constructed according to the writing content, a user can jump to a specified page number corresponding to the writing content through the catalog entry content, the method is convenient and quick, and user experience is improved.
FIG. 4 is a schematic diagram of an embodiment of a handwriting processing apparatus. As shown in fig. 4, the apparatus includes: a handwriting data construction module 410, a handwriting data processing module 420, and a writing content construction module 430.
The handwriting data construction module 410 is configured to acquire pressure feedback data and nib position information sent by the writing data acquisition pen, and construct handwriting data including the pressure feedback data and the nib position information.
The handwriting data processing module 420 is configured to determine size information required for rendering the page and page writing direction information according to the handwriting data.
In an alternative approach, the handwriting data processing module 420 is further configured to: acquiring initial point position information in pen point position information in handwriting data; traversing the nib position information and searching nib position information farthest from the initial point position information; and determining the size information required for presenting the page according to the initial point position information and the farthest nib position information.
In an alternative approach, the handwriting data processing module 420 is further configured to: determining current starting position information; reading any nib position information from handwriting data, judging whether the nib position information is read, and if not, taking the nib position information as current sampling position information; respectively calculating the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction; and comparing the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction with the distance difference between the previous sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction, and determining page writing direction information according to the comparison result.
The writing content construction module 430 is configured to connect coordinate points corresponding to the nib position information according to the size information required for presenting the page and the page writing direction information, so as to form writing content.
In an alternative approach, the writing content construction module 430 is further configured to: forming a writing content file according to the writing content; performing word recognition on each page of content in the written content file, and performing word segmentation and screening on the recognized word content to obtain directory index keywords; and setting a catalog for the writing content file according to the catalog index key words.
By adopting the device of the embodiment, a data group is formed after the handwriting data is processed in a time-sharing and segmentation way, and the size information and the page writing direction information required by the page presentation are determined according to the nib position information and the pressure feedback data of the data group; and connecting the coordinate points corresponding to the pen point position information according to the size information and the page writing direction information required by the page presentation to form writing contents, so that the user can conveniently review and store the writing contents, convenience and quickness are realized, and the user experience is improved.
The embodiment of the invention provides a nonvolatile computer storage medium, which stores at least one executable instruction, and the computer executable instruction can execute a handwriting processing method in any of the method embodiments.
The executable instructions may be particularly useful for causing a processor to:
Acquiring pressure feedback data and nib position information sent by a writing data acquisition pen, and constructing writing data containing the pressure feedback data and the nib position information;
Determining the size information required by the page presentation and the page writing direction information according to the handwriting data;
And connecting coordinate points corresponding to the pen point position information according to the size information required by the page presentation and the page writing direction information to form writing contents.
FIG. 5 illustrates a schematic diagram of an embodiment of a computing device of the present invention, and the embodiments of the present invention are not limited to a particular implementation of the computing device.
As shown in fig. 5, the computing device may include:
A processor (processor), a communication interface (Communications Interface), a memory (memory), and a communication bus.
Wherein: the processor, communication interface, and memory communicate with each other via a communication bus. A communication interface for communicating with network elements of other devices, such as clients or other servers, etc. And the processor is used for executing the program, and can specifically execute the relevant steps in the handwriting processing method embodiment.
In particular, the program may include program code including computer-operating instructions.
The processor may be a central processing unit, CPU, or an Application specific integrated Circuit, ASIC (Application SPECIFIC INTEGRATED circuits), or one or more integrated circuits configured to implement embodiments of the present invention. The one or more processors included by the server may be the same type of processor, such as one or more CPUs; but may also be different types of processors such as one or more CPUs and one or more ASICs.
And the memory is used for storing programs. The memory may comprise high-speed RAM memory or may further comprise non-volatile memory, such as at least one disk memory.
The program may be specifically operative to cause the processor to:
Acquiring pressure feedback data and nib position information sent by a writing data acquisition pen, and constructing writing data containing the pressure feedback data and the nib position information;
Determining the size information required by the page presentation and the page writing direction information according to the handwriting data;
And connecting coordinate points corresponding to the pen point position information according to the size information required by the page presentation and the page writing direction information to form writing contents.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general-purpose systems may also be used with the teachings herein. The required structure for a construction of such a system is apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It will be appreciated that the teachings of the present invention described herein may be implemented in a variety of programming languages, and the above description of specific languages is provided for disclosure of enablement and best mode of the present invention.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the above description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.
Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functionality of some or all of the components according to embodiments of the present invention may be implemented in practice using a microprocessor or Digital Signal Processor (DSP). The present invention can also be implemented as an apparatus or device program (e.g., a computer program and a computer program product) for performing a portion or all of the methods described herein. Such a program embodying the present invention may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specifically stated.
Claims (8)
1. The writing data acquisition pen is characterized by comprising a pen body and a pen cap body;
The pen body is provided with a sensing device and a containing cavity for containing the pen refill; the sensing device is used for collecting pressure feedback data and nib position information generated in the writing process of the nib part of the pen refill; the pressure sensor in the sensing device acquires pressure feedback data corresponding to each two-dimensional position information in real time; judging that the handwriting data acquisition is completed when the pressure feedback data does not change within a preset duration;
the pen is provided with a storage device which is used for storing and/or transferring the pressure feedback data and the pen point position information;
The pen cap body is provided with a communication module; the communication module is used for transmitting the pressure feedback data and the pen point position information to handwriting processing equipment for handwriting processing;
The handwriting processing equipment acquires initial point position information in the pen point position information; traversing the nib position information and searching nib position information farthest from the initial point position information; determining size information required for presenting a page according to the initial point position information and the farthest nib position information; determining the starting position information of the current row/column; randomly reading the position information of one pen point as the current sampling position information; respectively calculating the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction; and comparing the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction with the distance difference between the previous sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction, and determining page writing direction information according to the comparison result.
2. The pen tool according to claim 1, wherein the sensing means comprises at least a pressure sensor and a position sensor; wherein,
The pressure sensor is arranged at the pen tail end of the pen body and is used for converting pressure generated by the pen point part of the pen core in the writing process into pressure feedback data to be output;
The position sensor is arranged at the pen head end of the pen body and used for collecting pen point position information of the pen point part in the writing process.
3. The pen tool according to claim 1, wherein the pen body is provided with a first data contact, and the pen cap body is provided with a second data contact corresponding to the first data contact;
when the pen body is sleeved with the pen cap body, the first data contact is connected with the second data contact, so that a data path is formed between the pen body and the pen cap body;
Correspondingly, the storage device at least comprises a first storage module arranged on the pen body and a second storage module arranged on the pen cap body;
The first storage module is used for storing the pressure feedback data and the nib position information, and transmitting the stored pressure feedback data and nib position information to the second storage module for transfer through the data path.
4. A pen tool according to claim 3, wherein a battery module is further provided inside the pen body for providing electrical energy to the writing data collection pen tool;
the pen cap body is also provided with an indicator light for indicating the state of charge of the battery module and/or the data transmission state between the first storage module and the second storage module.
5. A handwriting processing method, comprising:
Acquiring pressure feedback data and nib position information sent by a writing data acquisition pen, and constructing handwriting data containing the pressure feedback data and the nib position information;
Determining size information and page writing direction information required by presenting a page according to the handwriting data; acquiring initial point position information in pen point position information in handwriting data; traversing the nib position information and searching nib position information farthest from the initial point position information; determining size information required for presenting a page according to the initial point position information and the farthest nib position information; determining the starting position information of the current row/column; reading the position information of one pen point from the handwriting data at will as the current sampling position information; respectively calculating the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction; respectively comparing the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction with the distance difference between the previous sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction, and determining page writing direction information according to the comparison result;
and connecting coordinate points corresponding to the pen point position information according to the size information required by the presented page and the page writing direction information to form writing content.
6. A handwriting processing apparatus, comprising:
The handwriting data construction module is used for acquiring pressure feedback data and nib position information sent by the writing data acquisition pen and constructing handwriting data containing the pressure feedback data and the nib position information;
The handwriting data processing module is used for determining the size information required by the page presentation and the page writing direction information according to the handwriting data;
The writing content construction module is used for connecting coordinate points corresponding to the pen point position information according to the size information required by the presented page and the page writing direction information to form writing content;
Wherein the handwriting data processing module is further configured to: acquiring initial point position information in pen point position information in handwriting data; traversing the nib position information and searching nib position information farthest from the initial point position information; determining size information required for presenting a page according to the initial point position information and the farthest nib position information; determining the starting position information of the current row/column; reading the position information of one pen point from the handwriting data at will as the current sampling position information; respectively calculating the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction; and comparing the distance difference between the current sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction with the distance difference between the previous sampling position information and the initial position information in the transverse writing direction and the longitudinal writing direction, and determining page writing direction information according to the comparison result.
7. A computing device, comprising: the device comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete communication with each other through the communication bus;
The memory is configured to store at least one executable instruction, where the executable instruction causes the processor to perform operations corresponding to a handwriting processing method according to claim 5.
8. A computer storage medium having stored therein at least one executable instruction for causing a processor to perform operations corresponding to a handwriting processing method according to claim 5.
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