CN102135821A - Handwriting pen and graphic restoration system - Google Patents
Handwriting pen and graphic restoration system Download PDFInfo
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- CN102135821A CN102135821A CN2011100557736A CN201110055773A CN102135821A CN 102135821 A CN102135821 A CN 102135821A CN 2011100557736 A CN2011100557736 A CN 2011100557736A CN 201110055773 A CN201110055773 A CN 201110055773A CN 102135821 A CN102135821 A CN 102135821A
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Abstract
The embodiment of the invention provides a handwriting pen without a handwriting board or special paper, which can acquire graphical information and force information in the handwriting process in real time. By the handwriting pen provided by the embodiment of the invention, a pen point track and three-dimensional force information between a pen point and a writing active surface in the writing process can be acquired in real time, so that dynamic information in the handwriting pen writing process is comprehensively and accurately stored, correction computation is performed on the acquired information through a microprocessor, absolute coordinates of track sampling points are acquired, and the track can be more accurately and reliably restored and analyzed; in addition, information acquiring equipment is integrated on the handwriting pen without the special paper or the handwriting board, so that the handwriting pen is easy and convenient to carry.
Description
Technical field
The present invention relates to a kind of hand-written information collecting device, particularly relate to a kind of writing pencil and a kind of figure restoring system that can gather hand-written information in real time.
Background technology
Hand-written information all has important use as a kind of basic recording means and personal feature in fields such as authentication, ecommerce, character analysises.And in order to reach the better application effect, needing can be more accurate, more comprehensively, have more the collection hand-written information of reductibility.
Use more hand script Chinese input equipment information acquisition equipment at present and mainly include plate writing pencil and two kinds of no plate writing pencils.There is the plate writing pencil to comprise a handwriting pad, when, causing the variation of the associated electrical quantity of magnetism, thereby draw the absolute coordinates of nib when some near to or in contact with on the handwriting pad certain with the supporting writing pencil of described handwriting pad.
No plate writing pencil is a kind of writing pencil that need not auxiliary handwriting pad, the principle of no plate writing pencil reduction handwritten patterns mainly contains two kinds, a kind of is by acceleration transducer is set in pen, the acceleration when obtaining the writing pencil motion, and further obtain the speed and the displacement of nib by integration.For example: the writing pencil based on three dimension acceleration sensor of Belgian Katholieke university development is based on this kind principle, is provided with the inclination angle that obliquity sensor comes measuring pen in the pen, calculates the nib displacement in conjunction with acceleration parameter, to recover hand-written image.Another kind of no plate writing pencil is to utilize image processing techniques to recover handwritten patterns.Relatively typical more a kind of is the Anoto writing pencil of Sweden, at front end a cmos sensor and an infrared transmitter are housed, need on the dedicated paper that is printed on the small bitmap case, write, little point of cmos sensor high speed acquisition infrared radiation calculates instantaneous nib absolute position on paper by specified point system of battle formations case.
More than several writing pencils in application process, though there is the plate writing pencil can more accurately determine the absolute coordinates of nib, obtain font information, need the supporting use of writing pencil and handwriting pad, integral device is unsophisticated inadequately and not portable; Though do not broken away from handwriting pad and there is the plate writing pencil, above-mentioned first kind of its acceleration sensor accuracy that adopts of no plate writing pencil and friction model have error, cause the precision of writing pencil lower; Second kind of no plate writing pencil need use on special paper, and usable range is limited.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of can gather graphical information and force information in the hand-written process in real time, and need not the writing pencil of handwriting pad or special paper and a kind of figure restoring system of this writing pencil of application.
Technical scheme is as follows:
A kind of writing pencil comprises:
Handwriting;
Be arranged on the pen axle of described handwriting central interior;
Be arranged on described handwriting bottom, the nib that is connected with described pen axle;
Be connected with described pen axle, gather the three-dimensional force sensor of the three-dimensional force information of described nib by described pen axle;
Be arranged on described handwriting inside, be used to detect the obliquity sensor at described handwriting inclination angle;
Be arranged on the described handwriting, be used for gathering the image capture module of described nib writing process written handwriting;
Be connected with described three-dimensional force sensor, obliquity sensor and image capture module respectively, be used for the three-dimensional force information of the described nib of described three-dimensional force sensor collection being proofreaied and correct according to the handwriting inclination angle that described obliquity sensor detects; And according to the written handwriting in the described nib writing process of described three-dimensional force information Control described image capture module startup collection through overcorrect; And the runs image processing algorithm is handled the microprocessor that obtains the absolute coordinates of sampled point in the described written handwriting to the written handwriting of described image capture module collection.
Above-mentioned writing pencil, preferred, described microprocessor comprises:
Force information processing unit, graphic information processing unit and status unit;
Wherein:
Described force information processing unit is used for according to the handwriting inclination angle that described obliquity sensor detects the three-dimensional force information of the described nib of described three-dimensional force sensor collection being carried out treatment for correcting; And judge the described predetermined threshold value that in the three-dimensional force information of overcorrect, whether surpasses described three-dimensional force information along the size of the axial power of described pen;
Described graphic information processing unit be used for when the three-dimensional force information of proofreading and correct through the force information processing unit when the size of the axial power of described pen surpasses the predetermined threshold value of described three-dimensional force information, control described image capture module and start the written handwriting of gathering in the described nib writing process; And the runs image processing algorithm is handled the absolute coordinates of the sampled point that obtains described written handwriting to described written handwriting;
Described status unit is used for the work state information of the described writing pencil of real-time collecting, according to described work state information the duty of described writing pencil is controlled.
Above-mentioned writing pencil, preferred, also comprise: data transmission and communication module;
The absolute coordinates that described data transmission and communication module are used for the handwriting sampled point that the three-dimensional force information that will proofread and correct through described microprocessor by the transmit port that is arranged on the described writing pencil and described microprocessor calculate transfers in the external unit.
Above-mentioned writing pencil, preferred, also comprise: storage chip;
Described storage chip is used for the handwriting of described image capture module collection is stored, and the handwriting of described storage is sent to described microprocessor handles.
Above-mentioned writing pencil, preferred, described writing pencil bottom is provided with lighting device;
Described lighting device is used for providing illumination at described nib writing process for the neighboring area of described nib and described nib.
Above-mentioned writing pencil, preferred, also comprise: power module;
Described power module is used to inner each building block of described writing pencil that working power is provided.
Above-mentioned writing pencil, preferred, also comprise: suitable with described handwriting, be used to protect the cap for brush of described nib.
Above-mentioned writing pencil, preferred, described cap for brush inside is provided with first contact device; Be provided with second contact device with the corresponding handwriting of described first contact device position;
When the described cap for brush of the adaptive insertion of described handwriting, when described first contact device contacted with described second contact device, described power module was stopped power supply;
When the described cap for brush breaks away from described handwriting, when described first contact device separated with described second contact device, described power module was described writing pencil power supply, makes described writing pencil carry out work.
Above-mentioned writing pencil, preferred, described handwriting outer setting has the state display screen;
Described state display screen is used for the work state information of writing pencil that described status unit is collected and the control procedure of described writing pencil duty is shown.
A kind of figure restoring system comprises: processing terminal and a kind of writing pencil.
The technical scheme that is provided by above the embodiment of the present application as seen, the writing pencil that the embodiment of the present application provides can be ibidemed real-time the collecting of writing between the acting surface of three-dimensional force information with nib track in the writing process and nib, thus the multidate information in the writing pencil writing process is preserved comprehensively and accurately, and the information of gathering is carried out correction calculation by microprocessor, obtain the absolute coordinates of track sampled point, make the reduction of person's handwriting and analyze accurate and credible more; And the collecting device of information all is integrated on the writing pencil, need not to make things convenient for portable by special paper or handwriting pad.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The handwriting outside drawing of the writing pencil that Fig. 1 provides for the embodiment of the present application;
The pen cap structure synoptic diagram of the writing pencil that Fig. 2 provides for the embodiment of the present application;
The inner structure synoptic diagram of the handwriting of the writing pencil that Fig. 3 provides for the embodiment of the present application;
The composition structural representation of the microprocessor that Fig. 4 provides for the embodiment of the present application;
The fundamental diagram of the writing pencil that Fig. 5 provides for the embodiment of the present application;
The writing pencil image processing process schematic diagram that Fig. 6 provides for the embodiment of the present application;
The structural representation of the figure restoring system that Fig. 7 provides for the embodiment of the present application;
Fig. 8 gathers the variation synoptic diagram of directions X power in the three-dimensional force information for the writing pencil that the embodiment of the present application provides;
Fig. 9 gathers the variation synoptic diagram of Y direction power in the three-dimensional force information for the writing pencil that the embodiment of the present application provides;
Figure 10 gathers the variation synoptic diagram of Z direction power in the three-dimensional force information for the writing pencil that the embodiment of the present application provides;
Diffusing some synoptic diagram of the writing pencil reduction handwriting that Figure 11 provides for the embodiment of the present application.
Embodiment
In order to make those skilled in the art person understand the application's scheme better.Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
The embodiment of the present application provides a kind of can gather the writing pencil of force information and graphical information in real time, and this writing pencil combines image information acquisition function and force information acquisition function, and can synchronous processing to reduce comprehensive hand-written information; The handwriting outside drawing of the writing pencil that the embodiment of the present application provides, the cap for brush of writing pencil receive synoptic diagram and writing pencil handwriting inner structure synoptic diagram respectively as Fig. 1, Fig. 2 and shown in Figure 3, introduce the structure composition and the principle of work of described writing pencil in detail below in conjunction with Fig. 1, Fig. 2 and Fig. 3.
The writing pencil that the embodiment of the present application provides mainly comprises: handwriting 1, pen axle (not shown), nib 2, three-dimensional force sensor 3, obliquity sensor 4, image capture module 5 and microprocessor 6;
Wherein: described pen axle is arranged on described handwriting 1 central interior position; Described nib 2 is arranged on the bottom of described handwriting 1, is connected with the pen axle of described handwriting 1 inside;
Three-dimensional force sensor 3 is connected with described pen axle, by described pen axle the three-dimensional force information that described nib 2 produces in writing process is gathered;
Obliquity sensor 4 is arranged on the inside of described handwriting 1, is used for detecting described handwriting 1 at the inclination angle of writing process with writing surface;
Microprocessor 6 is connected with described three-dimensional force sensor 3, obliquity sensor 4 and image capture module 5 respectively; The three-dimensional force information that produces in described nib 2 writing processes of handwriting inclination angle to described three-dimensional force sensor 3 collections of microprocessor 6 according to described obliquity sensor 4 detections is proofreaied and correct; Simultaneously described microprocessor 6 starts according to the described image capture module 5 of described three-dimensional force information Control through overcorrect gathers the written handwriting that produces in described nib 2 writing processes; The written handwriting that microprocessor 6 runs image processing algorithms are gathered described image capture module 5 is handled the absolute coordinates that obtains sampled point in the described written handwriting.
The writing pencil that the embodiment of the present application provides, as Fig. 2, provide with described Fig. 1 in handwriting 1 suitable, be used to protect the cap for brush 10 of described nib; The inside of the cap for brush 10 is provided with first contact device 11, is provided with second contact position 12 with described first contact device, 11 corresponding handwritings 1;
Handwriting 1 inside is provided with power module 9, and power module 9 provides working power for each building block of writing pencil inside, and power module 9 can be supplying cell or rechargeable battery.
When the described cap for brush 10 of described handwriting 1 adaptive insertion, when described first contact device 11 contacts with described second contact device 12, cut off the power supply of described power module 9, whole writing pencil quits work;
When the described handwriting 1 of the described cap for brush 10 disengagings, when described first contact device 11 was separated with described second contact device 12, described power module 9 was the writing pencil power supply, whole writing pencil startup work.
The described cap for brush 10 is provided with pocket folder 15, and writing pencil is convenient for carrying.
The writing pencil that the embodiment of the present application provides, the process of the images acquired of image capture module 5 adopts camera 14 to finish, bottom at writing pencil, be provided with lighting device 8 near the nib 2, lighting device 8 can be LED display, in described nib 2 writing processes, the neighboring area of nib 2 and described nib 2 provides illumination.
The writing pencil that the embodiment of the present application provides also is provided with storage chip 7, and storage chip 7 is used for the handwriting that image capture module 5 is gathered is stored, and the handwriting of storage is sent to microprocessor 6 handles; The image that the described image capture modules 5 of 7 pairs of storage chips are gathered is kept in, in order to store two continuous frames at least image.
The writing pencil that the embodiment of the present application provides, three-dimensional force sensor 3 is main to be measured when writing along a direction of principal axis (Z direction) with perpendicular to the stress intensity of pen axle and orthogonal both direction (directions X and Y direction), wherein with the stress intensity of the Z direction measured as nib and the contacted basis for estimation of writing surface, when the stress of Z direction during greater than a certain predetermined threshold value, microprocessor control image capture module 5 starts gathers written handwritings.
The writing pencil that the embodiment of the present application provides, microprocessor 6 comprises: force information processing unit 61, graphic information processing unit 62 and status unit 63;
Wherein:
Force information processing unit 61 carries out treatment for correcting according to the inclination angle of the handwriting 1 that described obliquity sensor 4 detects to the three-dimensional force information of the nib 2 of described three-dimensional force sensor 3 collections; And judge the described predetermined threshold value that in the three-dimensional force information of overcorrect, whether surpasses described three-dimensional force information along the stress intensity of Z direction;
When the stress intensity of described Z direction surpassed predetermined threshold value, 62 controls described image capture module 5 in described graphic information processing unit started the written handwriting of gathering in described nib 2 writing processes; The runs image processing algorithm is handled the absolute coordinates of the sampled point that obtains written handwriting to described written handwriting;
The writing pencil that the embodiment of the present application provides, handwriting 1 outer setting has state display screen 16, is used for the work state information of writing pencil that described status unit 63 is collected and the control procedure of described writing pencil duty is shown.
Simultaneously, the writing pencil that provides of the embodiment of the present application also is provided with data transmission and communication module 13;
The absolute coordinates of the sampled point in the handwriting that three-dimensional force information that data transmission and communication module 13 will be proofreaied and correct through microprocessor 6 by the transmit port that is arranged on the described writing pencil and described microprocessor 6 calculate transfers in the external unit described external unit such as PC etc.
The fundamental diagram of the writing pencil that the embodiment of the present application provides comprises as shown in Figure 5:
The cap for brush is taken off, and power-supply unit begins power supply, and writing pencil is started working; As under the bad situation of light, can open light fixture and throw light on;
Step S101: three-dimensional force sensor is with the three-dimensional force information of certain frequency high speed acquisition;
The microprocessor 6 control three-dimensional force sensors 3 fixed three-dimensional force information that detect nib 2 frequently; Three-dimensional force sensor 3 passes to microprocessor 6 or storage chip 7 with the three-dimensional force information of gathering by bus; When passing to storage chip 7, microprocessor 6 reads three-dimensional force information from described storage chip 7;
Step S102: obliquity sensor reads the inclination angle of writing pencil;
Step S102 and step S101 can carry out synchronously, and obliquity sensor 5 passes to microprocessor 6 with the inclination angle of reading;
Step S103: calculate X, Y, Z three-dimensional force size;
Microprocessor 6 goes out the force information of X, Y, three reference directions of Z by correction calculation in conjunction with three-dimensional force information and obliquity information;
Step S104: whether the stress of judging the Z direction is greater than predetermined threshold value; If greater than, execution in step S105; Otherwise, return step S101;
Whether the stress intensity with the Z direction contacts the foundation that writing surface is write as nib;
Step S105: image capture module images acquired information;
Write if the stress of Z direction, is judged nib greater than predetermined threshold value, microprocessor 6 transmits control signal, and control image capture module 5 is started working, with the frequency collection image information identical with three-dimensional force sensor 3;
Step S106: deliver to storage chip;
Step S107: contrast images obtains relative displacement;
Microprocessor 6 reads the two continuous frames picture and by calculating relative displacement from described storage chip 7;
Step S108: be sent to PC by delivery port;
The three-dimensional force information of the relative displacement that calculates and synchronous acquisition is sent to data transmission with microprocessor 6 and communication module 13 sends to PC by the transmit port that is arranged on the described writing pencil.
In the transmission course, transmission mode can be wire transmission, for example: USB; Also can be wireless, for example: bluetooth.
On the basis of Fig. 5, the embodiment of the present application provides writing pencil image processing process schematic diagram as shown in Figure 5, comprising:
Step S201: the camera of image capture module starts takes written handwriting;
Step S202: the written handwriting to described collection carries out the video decode operation;
Step S203: to storing through the written handwriting of video decode operation;
Step S204: read written handwriting through the video decode operation; Described written handwriting is carried out binary conversion treatment;
Step S205: the image denoising to written handwriting on the basis of step S204 is handled;
Step S206: extract the eigenwert in the described image;
Step S207: the eigenwert to described extraction is mated;
Step S208: the relative displacement of calculating the sampled point of described written handwriting.
More than be the introduction of the embodiment of the present application to the formation and the principle of work of writing pencil, on the basis of writing pencil, the embodiment of the present application also provides a kind of figure restoring system, and its structural representation comprises as shown in Figure 7:
Can gather the writing pencil 301 and the processing terminal 302 of graphical information and force information in real time;
Processing terminal 302 shows the data message of described writing pencil transmission, realizes the reduction to handwriting.The demonstration synoptic diagram of the three-dimensional force information that the 302 pairs of writing pencils of processing terminal are gathered is respectively as Fig. 8～shown in Figure 10, to the demonstration of the absolute coordinates point of relative displacement as shown in figure 11, can clear and accurate show reduction to written handwriting simultaneously.
Writing pencil that the embodiment of the present application provides and figure restoring system need be by any utility appliance, adopt image technique that written handwriting is reduced, reduction precision height, image information and the force information in the synchronous acquisition writing process simultaneously, make hand-written information fuller, have more reductibility.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is difference with other embodiment.The above only is the application's a embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.
Claims (10)
1. a writing pencil is characterized in that, comprising:
Handwriting;
Be arranged on the pen axle of described handwriting central interior;
Be arranged on described handwriting bottom, the nib that is connected with described pen axle;
Be connected with described pen axle, gather the three-dimensional force sensor of the three-dimensional force information of described nib by described pen axle;
Be arranged on described handwriting inside, be used to detect the obliquity sensor at described handwriting inclination angle;
Be arranged on the described handwriting, be used for gathering the image capture module of described nib writing process written handwriting;
Be connected with described three-dimensional force sensor, obliquity sensor and image capture module respectively, be used for the three-dimensional force information of the described nib of described three-dimensional force sensor collection being proofreaied and correct according to the handwriting inclination angle that described obliquity sensor detects; And according to the written handwriting in the described nib writing process of described three-dimensional force information Control described image capture module startup collection through overcorrect; And the runs image processing algorithm is handled the microprocessor that obtains the absolute coordinates of sampled point in the described written handwriting to the written handwriting of described image capture module collection.
2. writing pencil according to claim 1 is characterized in that, described microprocessor comprises:
Force information processing unit, graphic information processing unit and status unit;
Wherein:
Described force information processing unit is used for according to the handwriting inclination angle that described obliquity sensor detects the three-dimensional force information of the described nib of described three-dimensional force sensor collection being carried out treatment for correcting; And judge the described predetermined threshold value that in the three-dimensional force information of overcorrect, whether surpasses described three-dimensional force information along the size of the axial power of described pen;
Described graphic information processing unit be used for when the three-dimensional force information of proofreading and correct through the force information processing unit when the size of the axial power of described pen surpasses the predetermined threshold value of described three-dimensional force information, control described image capture module and start the written handwriting of gathering in the described nib writing process; And the runs image processing algorithm is handled the absolute coordinates of the sampled point that obtains described written handwriting to described written handwriting;
Described status unit is used for the work state information of the described writing pencil of real-time collecting, according to described work state information the duty of described writing pencil is controlled.
3. writing pencil according to claim 1 is characterized in that, also comprises: data transmission and communication module;
The absolute coordinates that described data transmission and communication module are used for the handwriting sampled point that the three-dimensional force information that will proofread and correct through described microprocessor by the transmit port that is arranged on the described writing pencil and described microprocessor calculate transfers in the external unit.
4. writing pencil according to claim 1 is characterized in that, also comprises: storage chip;
Described storage chip is used for the handwriting of described image capture module collection is stored, and the handwriting of described storage is sent to described microprocessor handles.
5. writing pencil according to claim 1 is characterized in that, described writing pencil bottom is provided with lighting device;
Described lighting device is used for providing illumination at described nib writing process for the neighboring area of described nib and described nib.
6. writing pencil according to claim 1 is characterized in that, also comprises: power module;
Described power module is used to inner each building block of described writing pencil that working power is provided.
7. writing pencil according to claim 6 is characterized in that, also comprises: suitable with described handwriting, be used to protect the cap for brush of described nib.
8. writing pencil according to claim 7 is characterized in that, described cap for brush inside is provided with first contact device; Be provided with second contact device with the corresponding handwriting of described first contact device position;
When the described cap for brush of the adaptive insertion of described handwriting, when described first contact device contacted with described second contact device, described power module was stopped power supply;
When the described cap for brush breaks away from described handwriting, when described first contact device separated with described second contact device, described power module was described writing pencil power supply, makes described writing pencil carry out work.
9. writing pencil according to claim 2 is characterized in that, described handwriting outer setting has the state display screen;
Described state display screen is used for the work state information of writing pencil that described status unit is collected and the control procedure of described writing pencil duty is shown.
10. a figure restoring system is characterized in that, comprising: the described writing pencil of processing terminal and claim 1～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100557736A CN102135821B (en) | 2011-03-08 | 2011-03-08 | Handwriting pen and graphic restoration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100557736A CN102135821B (en) | 2011-03-08 | 2011-03-08 | Handwriting pen and graphic restoration system |
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| CN102135821A true CN102135821A (en) | 2011-07-27 |
| CN102135821B CN102135821B (en) | 2013-03-06 |
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| CN2011100557736A Expired - Fee Related CN102135821B (en) | 2011-03-08 | 2011-03-08 | Handwriting pen and graphic restoration system |
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