CN107608619A - Person's handwriting curve generation method, device, equipment and storage medium for touch screen - Google Patents
Person's handwriting curve generation method, device, equipment and storage medium for touch screen Download PDFInfo
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- CN107608619A CN107608619A CN201710852514.3A CN201710852514A CN107608619A CN 107608619 A CN107608619 A CN 107608619A CN 201710852514 A CN201710852514 A CN 201710852514A CN 107608619 A CN107608619 A CN 107608619A
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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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
Abstract
Include the embodiment of the invention discloses a kind of for the person's handwriting curve generation method of touch screen, device, equipment and storage medium, methods described：Obtain the touch data of each touch point in the touch operation of user；The distance between adjacent touch point is predicted according to the prediction rule of setting, to obtain the Prediction distance between each adjacent touch point；When the actual range between the Prediction distance and adjacent touch point meets the distance condition of setting, it is determined that touch point corresponding to the Prediction distance is control point；The control point is generated into person's handwriting curve according to the Bezier of setting.Solve the problems, such as, using broken line caused by Bezier drafting person's handwriting curve, to make the person's handwriting curve of drafting rounder and more smooth.
Description
Technical field
The present invention relates to touch technology, more particularly to a kind of person's handwriting curve generation method, device, equipment for touch screen
And storage medium.
Background technology
In some existing drawing softwares or drawing tools, generally generated using Bessel Formula algorithm according to control point
Bezier.
In existing intelligent interaction flat board, generally use touch data point draws Bezier as control point.
When touch apparatus is because sample rate is low or noise jamming produces abnormal touch data.If by the data point of abnormal touch data
Bezier is drawn as control point, will result in broken line phenomenon.
The content of the invention
The embodiment of the present invention provides a kind of person's handwriting curve generation method, device, equipment and storage medium for touch screen,
Solve the problems, such as, using broken line caused by Bezier drafting person's handwriting curve, to make the person's handwriting curve of drafting rounder and more smooth.
In a first aspect, the embodiments of the invention provide a kind of person's handwriting curve generation method for touch screen, methods described
Including：
Obtain the touch data of each touch point in the touch operation of user；
The distance between adjacent touch point is predicted according to the prediction rule of setting, to obtain each adjacent touch
Prediction distance between point；
When the actual range between the Prediction distance and adjacent touch point meets the distance condition of setting, then really
Touch point corresponding to the fixed Prediction distance is control point；
The control point is generated into person's handwriting curve according to the Bezier of setting.
Second aspect, the embodiment of the present invention additionally provide a kind of person's handwriting curve generating means for touch screen, the dress
Put including：
Data acquisition module, the touch data of each touch point in the touch operation for obtaining user；
Range prediction module, the distance between adjacent touch point is predicted for the prediction rule according to setting, with
Obtain the Prediction distance between each adjacent touch point；
Control point determining module, for meeting to set when the actual range between the Prediction distance and adjacent touch point
During fixed distance condition, it is determined that touch point corresponding to the Prediction distance is control point；
Person's handwriting curve generation module, for the control point to be generated into person's handwriting curve according to the Bezier of setting.
The third aspect, the embodiment of the present invention additionally provide a kind of computer equipment, including memory, processor and are stored in
Realized on memory and the computer program that can run on a processor, during the computing device described program as the present invention is real
Apply any described person's handwriting curve generation method for touch screen in example.
Fourth aspect, the embodiment of the present invention additionally provide a kind of computer-readable recording medium, are stored thereon with computer
Program, realize that the person's handwriting curve for touch screen as described in any in the embodiment of the present invention is given birth to when the program is executed by processor
Into method.
In the embodiment of the present invention, the touch data of each touch point in the touch operation by obtaining user, according to setting
Prediction rule is predicted to the distance between adjacent touch point, to obtain the Prediction distance between each adjacent touch point,
Then judge when the actual range between the Prediction distance and adjacent touch point meets the distance condition of setting, then really
Touch point corresponding to the fixed Prediction distance is control point, and the control point is generated into person's handwriting song according to the Bezier of setting
Line.Solve the problems, such as, using broken line caused by Bezier drafting person's handwriting curve, to make the person's handwriting curve of drafting rounder and more smooth.
Brief description of the drawings
Fig. 1 a are a kind of flow charts of person's handwriting curve generation method for touch screen in the embodiment of the present invention one；
Fig. 1 b are the situation schematic diagrams for existing in a kind of touch data that the embodiment of the present invention one is applicable abnormity point；
Fig. 1 c are a kind of schematic diagrames for Bezier drawn out according to Fig. 1 b that the embodiment of the present invention one is applicable；
A kind of schematic diagram for filtering out the Bezier after abnormity point that Fig. 1 d are that the embodiment of the present invention one is applicable；
Fig. 2 a are a kind of flow charts of person's handwriting curve generation method for touch screen in the embodiment of the present invention two；
Fig. 2 b are the relative position signals of each touch point when a kind of finger that the embodiment of the present invention two is applicable touches screen
Figure；
Fig. 3 a are a kind of flow charts of person's handwriting curve generation method for touch screen in the embodiment of the present invention three；
Fig. 3 b are the Bei Sai that a kind of unused this programme (when abnormity point be present) that the embodiment of the present invention three is applicable is drawn
The schematic diagram of your curve；
Fig. 3 c are the Bezier that one kind that the embodiment of the present invention three is applicable uses that this programme (after filtering out abnormity point) is drawn
The schematic diagram of curve；
Fig. 4 is a kind of structural representation of person's handwriting curve generating means for touch screen in the embodiment of the present invention four；
Fig. 5 is a kind of structural representation of computer equipment in the embodiment of the present invention five.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 a are a kind of flow chart for person's handwriting curve generation method for touch screen that the embodiment of the present invention one provides, this
Embodiment is applicable to the situation using Bezier generation person's handwriting curve, and this method can be the use that embodiment provides by the present invention
Performed in the person's handwriting curve generating means of touch screen, the device can be realized by the way of software and/or hardware.Reference chart
1a, this method specifically may include steps of：
S110, obtain user touch operation in each touch point touch data.
Specifically, when user is carrying out touch operation on smart machine, each touch point in the touch operation of user is obtained
Touch data.Exemplary, the touch operation of user can carry out touch generation to touch-screen by the finger of user,
Can be that operation generation is carried out to touch-screen by felt pen, wherein, touch-screen can be capacitance plate, electromagnetic screen or infrared touch
Screen etc..Optionally, when touch-screen is electromagnetic screen, used time writer as felt pen.
Optionally, the touch data includes the abscissa value and ordinate value of the touch point.Accordingly, the acquisition
The touch data of each touch point in the touch operation of user, including：Touched according to each in the time cycle collection touch operation of setting
Touch a little, and obtain the abscissa value and ordinate value of each touch point.
Wherein, touch-screen is after touch operation is detected, according to each tactile in the time cycle collection touch operation of setting
Touch a little.Optionally, the time cycle of setting can be 30 milliseconds.After touch-screen obtains the touch operation of user, by touch data
Application layer is reported, application layer records to touch data, to obtain the abscissa value of each touch point and ordinate value, its
In, abscissa value and ordinate value show position of the touch point in touch-screen, to abscissa value and the numerical value of ordinate value
Unit does not limit, and numerical value unit can be the numerical value to put in order of pixel or apart from touch-screen left side edge
Or the cms or millimeter of upper edge.
S120, according to the prediction rule of setting the distance between adjacent touch point is predicted, to obtain each phase
Prediction distance between adjacent touch point.
Specifically, the number at least two of touch point, according to setting prediction rule between adjacent touch point away from
From being predicted, the prediction rule of setting can be formulated according to prediction algorithm, obtain the Prediction distance between adjacent touch point.Can
Choosing, Prediction distance is usedRepresent.
S130, the distance condition when the actual range satisfaction setting between the Prediction distance and adjacent touch point
When, it is determined that touch point corresponding to the Prediction distance is control point.
Specifically, when judging that Prediction distance between adjacent touch point and actual range meet the condition of setting, this is pre-
Ranging is control point from corresponding touch point.It should be noted that touch point corresponding to each Prediction distance is two, according to tactile
Touch operation sequencing selection, here using case time sequencing in two touch points compared with the touch point that the latter occurs as control
Point.
S140, the Bezier generation person's handwriting curve by the control point according to setting.
Specifically, after specific control point is determined, using existing control point, using the Bezier of setting
Generate person's handwriting curve.Wherein, Bezier is the mathematic curve applied to X-Y scheme application program, in general vector graphics
Curve is accurately drawn by it, Bezier is made up of line segment or node, and node is the fulcrum that can be dragged, and Bezier is bent
Line is parameter curve important in computer graphics.
In a specific example, Fig. 1 b show abnormity point in a kind of touch data be present, and Fig. 1 c are shown
A kind of Bezier drawn out according to Fig. 1 b, Fig. 1 d show a kind of Bezier filtered out after abnormity point.Can
To find out, during user slides on the touchscreen, sliding speed is typically to approach at the uniform velocity, it may thus be appreciated that the C in Fig. 1 b
Point is abnormity point, and Fig. 1 c show due to abnormity point C presence, and Bezier has broken line, and (broken line part is in B, C point
Between), Fig. 1 d show after filtering out abnormity point C, and Bezier is smooth normal Bezier.
In the embodiment of the present invention, the touch data of each touch point in the touch operation by obtaining user, according to setting
Prediction rule is predicted to the distance between adjacent touch point, to obtain the Prediction distance between each adjacent touch point,
Then judge when the actual range between the Prediction distance and adjacent touch point meets the distance condition of setting, then really
Touch point corresponding to the fixed Prediction distance is control point, and the control point is generated into person's handwriting song according to the Bezier of setting
Line.Solve the problems, such as, using broken line caused by Bezier drafting person's handwriting curve, to make the person's handwriting curve of drafting rounder and more smooth.
Embodiment two
Fig. 2 a are a kind of flow chart for person's handwriting curve generation method for touch screen that the embodiment of the present invention two provides, this
Embodiment is on the basis of above-described embodiment, when the prediction rule of setting is optimized for being predicted using Kalman filter,
And to " being predicted according to the prediction rule of setting to the distance between adjacent touch point, to obtain each adjacent touch point
Between Prediction distance " be optimized.With reference to figure 2a, this method specifically may include steps of：
S210, obtain user touch operation in each touch point touch data.
S220, according to the touch data calculate adjacent touch point between actual range.
Specifically, the actual range between adjacent touch point is calculated according to touch data.In a specific example, with
Collect in touch operation exemplified by 10 touch points, Fig. 2 b show a kind of relative position of each touch point when finger touches screen
Put, wherein, first point when A points are finger touch-screen, B is second point, is gone down successively, 10 touch points be respectively C, D,
E、F、G、H、I.The distance between adjacent touch point is calculated according to the coordinate of each touch point.So that 2 points of A, B as an example, if the seat of A points
Mark is (xA,xB), the coordinate (y of B pointsA,yB), then when finger passes through B points, calculating the distance between 2 points of AB isSimilarly, 2 points of the distance between remaining consecutive points computational methods and AB it
Between distance calculating method it is identical, will not be repeated here.It should be noted that because A points are first points, then pass through in finger
A moment does not produce distance also, therefore need not now calculate any distance.
S230, using the actual range between the adjacent touch point, and application Kalman filter adjacent is touched to described
Touch and the distance between be a little predicted, to obtain the Prediction distance between each adjacent touch point.
Specifically, after the actual range between each adjacent touch point is determined, using Kalman filter to each adjacent
The distance between touch point is predicted.Optionally, so that finger touches as an example, touching process each time includes：Finger down, hand
Refer to slide and lifted with finger.In Kalman filter in use, it is required for initializing karr in each finger down
Graceful wave filter, during touching each time, initialized card Thalmann filter is required for, that is, calculating point and point in first time
Between apart from when, it is necessary to initialized card Thalmann filter, for example, it is desired to use DistABDeinitialization Kalman filter, and afterwards
Touch point C, D, E, F, G, H, I, J etc. need to use DistBC、DistCD、DistDE、DistEF、DistFG、DistGH、DistHI、
DistIJRenewal Kalman filter is removed respectively.It should be noted that when the renewal process of Kalman filter is that application is previous
The desired value at quarter and the parameter of setting go to predict the desired value at current time, wherein, the parameter of setting includes kalman gain, control
Input, process noise etc. are made, specific renewal process will not be repeated here.Optionally, in embodiments of the present invention, desired value can
To be the distance between adjacent touch point.
In a specific example, definition status vectorWherein, dnFor the distance between touch point,
Such as DistAB、DistBC、DistCD、DistDE、DistEF、DistFG、DistGH、DistHI、DistIJ, vdnRepresent dnConversion
Speed, in this example equivalent to n=B, C, D, E, F, G, H, I.Optionally；Definition status transfer matrixEvery time
Measured value have one, i.e. the distance between current point and previous point, therefore measured valueDefinition measurement square
Battle arraySystem does not have a control input in this example, thus the matrix of control input take 0 (this 0 represents null matrix,
Rather than numeral is 0).Calculate in second point (being in this example point B) during each touch and touched with first point
Touch is the distance between a little d0, thenPredict the distance between each touch point and update Kalman filter,
3rd touch point starts, by the distance between each adjacent touch point of calculating DistnBring the renewal side of Kalman filter into
Journey, and obtain the distance value of predictionI.e.
In this specific example, the relation between Prediction distance, actual range, state-transition matrix and calculation matrix
It is as follows：
Wherein, A (n-1) can take constantConstant can be takenK (n) is kalman gain, K
(n) calculating process does not repeat herein.
S240, the distance condition when the actual range satisfaction setting between the Prediction distance and adjacent touch point
When, it is determined that touch point corresponding to the Prediction distance is control point.
S250, the Bezier generation person's handwriting curve by the control point according to setting.
In the embodiment of the present invention, by calculating the actual range between adjacent touch point according to the touch data, utilize
Actual range between the adjacent touch point, and application Kalman filter is carried out to the distance between described adjacent touch point
Prediction, to obtain the Prediction distance between each adjacent touch point.By between each touch point Prediction distance and actual range
Relation, provide judgement basis for filtering out for touch point.
Embodiment three
Fig. 3 a are a kind of flow chart for person's handwriting curve generation method for touch screen that the embodiment of the present invention three provides, this
Embodiment is on the basis of above-described embodiment, to " when the actual range between the Prediction distance and adjacent touch point is expired
During the distance condition set enough, it is determined that touch point corresponding to the Prediction distance is control point " it is optimized.Reference chart
3a, this method specifically may include steps of：
S310, obtain user touch operation in each touch point touch data.
S320, according to the prediction rule of setting the distance between adjacent touch point is predicted, to obtain each phase
Prediction distance between adjacent touch point.
S330, when the difference of the actual range between the adjacent touch point and the corresponding Prediction distance meet setting
During distance condition, it is determined that touch point corresponding to the Prediction distance is control point.
Specifically, judging whether the difference of actual range between adjacent touch point and corresponding Prediction distance meets setting
Distance condition.Optionally, the distance condition set is less than zero as the difference of actual range and Prediction distance, and the absolute value of difference is more than
Actual range is multiplied by the coefficient of setting, and the coefficient of setting is set according to the demand of user, is formulated as follows：Meet diff<0,|diff|>R × y (n), wherein, r is the coefficient of setting.Setting will be unsatisfactory for
Touch point corresponding to the Prediction distance of distance condition filters out, touch point corresponding to the Prediction distance for the distance condition that satisfaction is set
For control point.It should be noted that the touch point filtered out simply filters out when drawing Bezier, that is, not made
For control point, it is determined that retain whole touch points during control point, with reference to figure 1d, after C points are filtered out, then C points not as
The control point of Bezier.
S340, the Bezier generation person's handwriting curve by the control point according to setting.
In the embodiment of the present invention, by judge the actual range between adjacent touch point and the corresponding Prediction distance it
Whether difference meets that the distance condition of setting realizes the determination to control point.
Optionally, the control point is generated into person's handwriting curve according to the Bezier of setting, can is specifically：According to institute
The quantity for stating control point selects Bezier of the Bezier corresponding with the control point as setting；By the control
Point generates person's handwriting curve according to the Bezier of setting.
Wherein, Bezier corresponding with control point is selected with reference to the quantity at control point, in a specific example,
If control point is three, Bezier of the secondary Bezier as setting can be selected；If control point is four,
Bezier of the eligible Cubic kolmogorov's differential system as setting.It should be noted that the quantity at control point and setting
The selection of Bezier is not unique corresponding, have selected Bezier of the secondary Bezier for setting, then ABC tri-
Put and sequentially draw one section of Bezier, BCD tri- point-renderings, one section of Bezier, by that analogy, each section of Bezier group
Into complete Bezier；If selecting Cubic kolmogorov's differential system wireless for the Bezier of setting, 4 points of ABCD is sequentially drawn
One section of Bezier, tetra- points of BCDE sequentially draw one section of Bezier, and by that analogy, each section of Bezier has formed
Whole Bezier.Realize the generation for curve of being identified the handwriting according to the Bezier of setting.
In a specific example, Fig. 3 b show the Bei Sai that a kind of unused this programme (when abnormity point be present) is drawn
That curve, Fig. 3 c show a kind of Bezier drawn using this programme (after filtering out abnormity point).As can be seen that in Fig. 3 b
In, there is broken line problem at 350 and 360, Fig. 3 c Bezier is more smoother than Fig. 3 b Bezier.
Example IV
Fig. 4 is the structural representation that the present invention is a kind of person's handwriting curve generating means for touch screen that example IV provides
Figure, the device are adapted for carrying out a kind of person's handwriting curve generation method for touch screen that the embodiment of the present invention is supplied to.Such as Fig. 4
Shown, the device can specifically include：
Data acquisition module 410, the touch data of each touch point in the touch operation for obtaining user；
Range prediction module 420, the distance between adjacent touch point is predicted for the prediction rule according to setting,
To obtain the Prediction distance between each adjacent touch point；
Control point determining module 430, for expiring when the actual range between the Prediction distance and adjacent touch point
During the distance condition set enough, it is determined that touch point corresponding to the Prediction distance is control point；
Person's handwriting curve generation module 440, for the control point to be generated into person's handwriting curve according to the Bezier of setting.
Further, the prediction rule of the setting includes being predicted using Kalman filter；
Accordingly, range prediction module 420 is specifically used for：
Actual range between adjacent touch point is calculated according to the touch data；
Using the actual range between the adjacent touch point, and application Kalman filter to the adjacent touch point it
Between distance be predicted, to obtain the Prediction distance between each adjacent touch point.
Further, control point determining module 430 is specifically used for：
When the difference of the actual range between the adjacent touch point and the corresponding Prediction distance meets the distance of setting
During condition, it is determined that touch point corresponding to the Prediction distance is control point.
Further, person's handwriting curve generation module 440 is specifically used for：
Bezier of the Bezier corresponding with the control point as setting is selected according to the quantity at the control point
Curve；
The control point is generated into person's handwriting curve according to the Bezier of setting.
Further, the touch data includes the abscissa value and ordinate value of the touch point；
Accordingly, data acquisition module 410 is specifically used for：
According to each touch point in the time cycle collection touch operation of setting, and obtain the abscissa value of each touch point
And ordinate value.
Person's handwriting curve generating means provided in an embodiment of the present invention for touch screen can perform any embodiment of the present invention
The person's handwriting curve generation method for touch screen provided, possesses the corresponding functional module of execution method and beneficial effect.
Embodiment five
Fig. 5 is a kind of structural representation for computer equipment that the embodiment of the present invention five provides.Fig. 5 is shown suitable for being used for
Realize the block diagram of the exemplary computer device 12 of embodiment of the present invention.The computer equipment 12 that Fig. 5 is shown is only one
Example, any restrictions should not be brought to the function and use range of the embodiment of the present invention.
As shown in figure 5, computer equipment 12 is showed in the form of universal computing device.The component of computer equipment 12 can be with
Including but not limited to：One or more processor or processing unit 16, system storage 28, connect different system component
The bus 18 of (including system storage 28 and processing unit 16).
Bus 18 represents the one or more in a few class bus structures, including memory bus or Memory Controller,
Peripheral bus, graphics acceleration port, processor or the local bus using any bus structures in a variety of bus structures.Lift
For example, these architectures include but is not limited to industry standard architecture (ISA) bus, MCA (MAC)
Bus, enhanced isa bus, VESA's (VESA) local bus and periphery component interconnection (PCI) bus.
Computer equipment 12 typically comprises various computing systems computer-readable recording medium.These media can be it is any can be by
The usable medium that computer equipment 12 accesses, including volatibility and non-volatile media, moveable and immovable medium.
System storage 28 can include the computer system readable media of form of volatile memory, such as arbitrary access
Memory (RAM) 30 and/or cache memory 32.Computer equipment 12 may further include it is other it is removable/can not
Mobile, volatile/non-volatile computer system storage medium.Only as an example, storage system 34 can be used for read-write not
Movably, non-volatile magnetic media (Fig. 5 is not shown, is commonly referred to as " hard disk drive ").Although not shown in Fig. 5, can with
There is provided for the disc driver to may move non-volatile magnetic disk (such as " floppy disk ") read-write, and to removable non-volatile
The CD drive of CD (such as CD-ROM, DVD-ROM or other optical mediums) read-write.In these cases, each driving
Device can be connected by one or more data media interfaces with bus 18.Memory 28 can include at least one program and produce
Product, the program product have one group of (for example, at least one) program module, and these program modules are configured to perform of the invention each
The function of embodiment.
Program/utility 40 with one group of (at least one) program module 42, such as memory 28 can be stored in
In, such program module 42 includes --- but being not limited to --- operating system, one or more application program, other programs
Module and routine data, the realization of network environment may be included in each or certain combination in these examples.Program mould
Block 42 generally performs function and/or method in embodiment described in the invention.
Computer equipment 12 can also be with one or more external equipments 14 (such as keyboard, sensing equipment, display 24
Deng) communication, the equipment communication interacted with the computer equipment 12 can be also enabled a user to one or more, and/or with making
Obtain any equipment that the computer equipment 12 can be communicated with one or more of the other computing device (such as network interface card, modulatedemodulate
Adjust device etc.) communication.This communication can be carried out by input/output (I/O) interface 22.Also, computer equipment 12 may be used also
To pass through network adapter 20 and one or more network (such as LAN (LAN), wide area network (WAN) and/or public network
Network, such as internet) communication.As illustrated, network adapter 20 is led to by bus 18 and other modules of computer equipment 12
Letter.It should be understood that although not shown in Fig. 5, computer equipment 12 can be combined and use other hardware and/or software module, bag
Include but be not limited to：Microcode, device driver, redundant processing unit, external disk drive array, RAID system, magnetic tape drive
Device and data backup storage system etc..
Processing unit 16 is stored in program in system storage 28 by operation, so as to perform various function application and
Data processing, such as realize the person's handwriting curve generation method for touch screen that the embodiment of the present invention is provided：
That is, the processing unit is realized when performing described program：Each touch point touches in the touch operation of acquisition user
Touch data；The distance between adjacent touch point is predicted according to the prediction rule of setting, to obtain each adjacent touch
Prediction distance between point；When the actual range between the Prediction distance and adjacent touch point meets the distance bar of setting
During part, it is determined that touch point corresponding to the Prediction distance is control point；Bezier by the control point according to setting
Generate person's handwriting curve.
Embodiment six
The embodiment of the present invention six provides a kind of computer-readable recording medium, is stored thereon with computer program, the journey
The person's handwriting curve generation method for touch screen provided such as all inventive embodiments of the application is provided when sequence is executed by processor：
That is, the program is realized when being executed by processor：Obtain the touch data of each touch point in the touch operation of user；
The distance between adjacent touch point is predicted according to the prediction rule of setting, to obtain between each adjacent touch point
Prediction distance；When the actual range between the Prediction distance and adjacent touch point meets the distance condition of setting, then
It is control point to determine touch point corresponding to the Prediction distance；The control point is generated into person's handwriting according to the Bezier of setting
Curve.
Any combination of one or more computer-readable media can be used.Computer-readable medium can be calculated
Machine readable signal medium or computer-readable recording medium.Computer-readable recording medium for example can be --- but it is unlimited
In system, device or the device of --- electricity, magnetic, optical, electromagnetic, infrared ray or semiconductor, or it is any more than combination.Calculate
The more specifically example (non exhaustive list) of machine readable storage medium storing program for executing includes：Electrical connection with one or more wires, just
Take formula computer disk, hard disk, random access memory (RAM), read-only storage (ROM), erasable type and may be programmed read-only storage
Device (EPROM or flash memory), optical fiber, portable compact disc read-only storage (CD-ROM), light storage device, magnetic memory device,
Or above-mentioned any appropriate combination.In this document, computer-readable recording medium can any include or store journey
The tangible medium of sequence, the program can be commanded the either device use or in connection of execution system, device.
Computer-readable signal media can include in a base band or as carrier wave a part propagation data-signal,
Wherein carry computer-readable program code.The data-signal of this propagation can take various forms, including --- but
It is not limited to --- electromagnetic signal, optical signal or above-mentioned any appropriate combination.Computer-readable signal media can also be
Any computer-readable medium beyond computer-readable recording medium, the computer-readable medium can send, propagate or
Transmit for by instruction execution system, device either device use or program in connection.
The program code included on computer-readable medium can be transmitted with any appropriate medium, including --- but it is unlimited
In --- wireless, electric wire, optical cable, RF etc., or above-mentioned any appropriate combination.
It can be write with one or more programming languages or its combination for performing the computer that operates of the present invention
Program code, described program design language include object oriented program language-such as Java, Smalltalk, C++,
Also include conventional procedural programming language-such as " C " language or similar programming language.Program code can be with
Fully perform, partly perform on the user computer on the user computer, the software kit independent as one performs, portion
Divide and partly perform or performed completely on remote computer or server on the remote computer on the user computer.
Be related in the situation of remote computer, remote computer can pass through the network of any kind --- including LAN (LAN) or
Wide area network (WAN)-be connected to subscriber computer, or, it may be connected to outer computer (such as carried using Internet service
Pass through Internet connection for business).
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
- A kind of 1. person's handwriting curve generation method for touch screen, it is characterised in that including：Obtain the touch data of each touch point in the touch operation of user；The distance between adjacent touch point is predicted according to the prediction rule of setting, with obtain each adjacent touch point it Between Prediction distance；When the actual range between the Prediction distance and adjacent touch point meets the distance condition of setting, it is determined that institute It is control point to state touch point corresponding to Prediction distance；The control point is generated into person's handwriting curve according to the Bezier of setting.
- 2. according to the method for claim 1, it is characterised in that the prediction rule of the setting includes applying Kalman filtering Device is predicted；Accordingly, the prediction rule according to setting is predicted to the distance between adjacent touch point, described each to obtain Prediction distance between adjacent touch point, including：Actual range between adjacent touch point is calculated according to the touch data；Using the actual range between the adjacent touch point, and application Kalman filter is between the adjacent touch point Distance is predicted, to obtain the Prediction distance between each adjacent touch point.
- 3. according to the method for claim 1, it is characterised in that it is described when the Prediction distance and adjacent touch point it Between actual range meet setting distance condition when, it is determined that touch point corresponding to the Prediction distance is control point, including：When the difference of the actual range between the adjacent touch point and the corresponding Prediction distance meets the distance condition of setting When, it is determined that touch point corresponding to the Prediction distance is control point.
- 4. according to the method for claim 1, it is characterised in that the Bezier by the control point according to setting Person's handwriting curve is generated, including：Bezier of the Bezier corresponding with the control point as setting is selected according to the quantity at the control point；The control point is generated into person's handwriting curve according to the Bezier of setting.
- 5. according to the method for claim 1, it is characterised in that the touch data includes the abscissa value of the touch point And ordinate value；Accordingly, it is described obtain user touch operation in each touch point touch data, including：According to each touch point in the time cycle collection touch operation of setting, and obtain the abscissa value of each touch point and indulge Coordinate value.
- A kind of 6. person's handwriting curve generating means for touch screen, it is characterised in that including：Data acquisition module, the touch data of each touch point in the touch operation for obtaining user；Range prediction module, the distance between adjacent touch point is predicted for the prediction rule according to setting, to obtain Prediction distance between each adjacent touch point；Control point determining module, for meeting setting when the actual range between the Prediction distance and adjacent touch point During distance condition, it is determined that touch point corresponding to the Prediction distance is control point；Person's handwriting curve generation module, for the control point to be generated into person's handwriting curve according to the Bezier of setting.
- 7. device according to claim 6, it is characterised in that the prediction rule of the setting includes applying Kalman filtering Device is predicted；Accordingly, the range prediction module is specifically used for：Actual range between adjacent touch point is calculated according to the touch data；Using the actual range between the adjacent touch point, and application Kalman filter is between the adjacent touch point Distance is predicted, to obtain the Prediction distance between each adjacent touch point.
- 8. device according to claim 6, it is characterised in that the control point determining module is specifically used for：When the difference of the actual range between the adjacent touch point and the corresponding Prediction distance meets the distance condition of setting When, it is determined that touch point corresponding to the Prediction distance is control point.
- 9. a kind of computer equipment, including memory, processor and storage are on a memory and the meter that can run on a processor Calculation machine program, it is characterised in that the side as described in any in claim 1-5 is realized during the computing device described program Method.
- 10. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the program is by processor The method as described in any in claim 1-5 is realized during execution.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852514.3A CN107608619A (en) | 2017-09-20 | 2017-09-20 | Person's handwriting curve generation method, device, equipment and storage medium for touch screen |
| PCT/CN2017/116744 WO2019056611A1 (en) | 2017-09-20 | 2017-12-17 | Touch screen handwriting curve generating method, apparatus, device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852514.3A CN107608619A (en) | 2017-09-20 | 2017-09-20 | Person's handwriting curve generation method, device, equipment and storage medium for touch screen |
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| Publication Number | Publication Date |
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| CN107608619A true CN107608619A (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710852514.3A Pending CN107608619A (en) | 2017-09-20 | 2017-09-20 | Person's handwriting curve generation method, device, equipment and storage medium for touch screen |
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| CN (1) | CN107608619A (en) |
| WO (1) | WO2019056611A1 (en) |
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| CN111443864A (en) * | 2020-04-14 | 2020-07-24 | 重庆赋比兴科技有限公司 | iOS-based curve drawing method |
| CN111931735A (en) * | 2020-09-26 | 2020-11-13 | 绿漫科技有限公司 | Handwritten signature method suitable for iOS application |
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| WO2023016430A1 (en) * | 2021-08-09 | 2023-02-16 | 广州视源电子科技股份有限公司 | Writing effect processing method and apparatus, device, and storage medium |
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