CN106339460A - Online drawing processing system and online drawing processing method - Google Patents
Online drawing processing system and online drawing processing method Download PDFInfo
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- CN106339460A CN106339460A CN201610742496.9A CN201610742496A CN106339460A CN 106339460 A CN106339460 A CN 106339460A CN 201610742496 A CN201610742496 A CN 201610742496A CN 106339460 A CN106339460 A CN 106339460A
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- G—PHYSICS
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- 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
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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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
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Abstract
The invention discloses an online drawing processing system and an online drawing processing method. The system comprises a digital panel module and a painting brush, wherein the digital panel module is used for sensing and judging the position and motion information of the painting brush; the system further comprises an auxiliary force feedback module; the auxiliary force feedback module is used for transmitting the acquired position and motion information of the painting brush to the digital panel module, and correcting the painting brush in real time after comparing processing. According to the online drawing processing system and the online drawing processing method disclosed by the invention, state parameter errors of online drawing can be fed back in real time, and a user can understand the difference between an existing work and an original work; meanwhile, a scoring result can be quantitatively given out, and the user is enabled to experience the improvement process of drawing skills during multiple practices.
Description
[technical field]
The invention belongs to online drawing techniques field is and in particular to a kind of online processing system and method for painting.
[background technology]
Drawing be a kind of copy manually in two-dimentional plane naturally art, except traditional hand-drawing method with
Outward, in today of computer technology high development, the appearance of various professional mapping softwares, can be more simply more efficient meter
The image of same high-quality is drawn out in calculation machine.But foundation of painting grounding in basic skills just can solve not by computer drawing software,
Skilled painting skill needs long-term study and gropes.The improving it is still desirable to by traditional teaching method of painting skill.
How to borrow computer and the Internet to improve the embodiment of painting skill qualitative, quantitative it is still desirable to continuous study.
Now in the art, image comparison algorithm comparative maturity, can directly calculate figure by the rgb Euclidean distance of image
As similarity.This technology transplant is come to compare for drawing, limits more, do not require nothing more than image size identical, also
Require image color identical, preferable achievement could be obtained.It is only applicable to imitation to study painting.But in fact, several factors are
Negligible, completing a drawing marking system does not need so many restriction.
[content of the invention]
The technical problem to be solved is for above-mentioned deficiency of the prior art, provides a kind of online drawing
Automatic assistant learning system and method, reach, by flexible Selecting All Parameters, the purpose evaluating different drawing methods, can carry out
Pointedly train, other is not needed the parameter tested can automatically correctly configure, it is to avoid many factors mixed influence terminates most
Really, solve the problems, such as present in prior art, to be automatically positioned gap and quantitative drawing result.
The present invention employs the following technical solutions:
A kind of online processing system of painting, including numerical digit plate module and paintbrush, described numerical digit plate module is used for sensing and judges
The position of described paintbrush and movable information, also include assisting force feedback module, described auxiliary force feedback module is used for collection
Described pen position and movable information are sent to described numerical digit plate module and after comparison process, described paintbrush are repaiied in real time
Just.
Further, described auxiliary force feedback module includes providing the Web page module of drawing display interface, institute for user
State that Web page module passes sequentially through card module and drive module connects to described numerical digit plate module, by described numerical digit plate module with
Described paintbrush connection is fed back, and the described Web page module information receiving is transmitted to drive module and processes by described card module
After be sent to numerical digit plate module.
Further, described paintbrush is provided with digit chip processing module and motor vibration module, at described digit chip
Reason module receives the feedback information of described numerical digit plate module, and controls described motor vibration module vibrations according to described feedback information
Realize force feedback.
Further, it is connected by rf radio frequency between described numerical digit plate module and described paintbrush.
Further, it is additionally provided with the assisted calibration module for Exception Filter jitter error in described numerical digit plate module,
Described assisted calibration module is connected with described drive module, for receiving the mark of the described paintbrush that described drive module sends respectively
Calibration information and real time position, movable information carry out contrast process.
Further, described assisted calibration functional module includes path analysis module, acquisition module and error calculating module,
Described path analysis module is connected with described drive module, and the standard routes information for receiving described drive module transmission is concurrent
Give described error calculating module, described acquisition module is used for the described pen position of real-time reading and movable information and is sent to institute
State error calculating module, described error calculating module is connected with described drive module, for described through input reporting module
Pen position and movable information occur during larger error, it being modified processing.
A kind of processing method of online drawing processing system, comprises the following steps:
S1: painted after Web page module chooses drawing parameter, described drawing parameter includes position, color, thickness, pen
Pressure；
S2: real time record drawing parameter, and carry out contrast feedback error and be modified to paintbrush with canonical parameter, parameter pair
The real-time display on Web page module than curve；
S3: according to actual drawing parameter, drawing is contrasted and score.
Further, described Web page module includes mission area, painting canvas area and contrast feedback area, and described mission area is used for providing
Standard drawing drawing curve sample, described painting canvas area is used for user and paints, and described contrast feedback area is used for showing mission area simultaneously
The pressure sensitivity curve in pressure sensitivity curve and painting canvas area.
Further, in step s2, after paintbrush often moves a certain distance, calculate and lines same characteristic features selected by mission area
The offset vector α of point, ensuing drafting, calculate the ranging offset vector of current point and lines same characteristic features point selected by mission area
β, if α and β is equal then it is assumed that current drafting does not have error, if remembering error vector γ=β-α, it is adjacent that note is drawn
The curve distance of two characteristic points is θ, noteFor the percentage fraction of current stroke position, by current point to γ's
Opposite direction correction, if corrected range is equal to γ, can fully return to task image level.
Further, when executing distance correction, force feedback is carried out to paintbrush so that becoming difficult to the drafting in γ direction, to γ
Reciprocal drafting becomes different, and now color and thickness information keep constant in the drawing process of each, when subtracting the first stroke of a Chinese character with 100
Arranges value and standard value Error Absolute Value again divided by the maximum of value 100 can be taken advantage of again；
The calculation of color error is that the error sum of rgb component is averaged again；Pressure sensitivity is continuous in drawing process
Change, advanced row numerical intervals conversion, set 0 for no pressure sensitivity, 100 is maximum pressure sensitivity, subtracts all pressure sensitivity collecting with 100
Absolute value error is averaged.
Compared with prior art, the present invention at least has the advantages that
A kind of online drawing processing system of the present invention is anti-by arranging common auxiliary force in numerical digit plate module and paintbrush
Feedback module, so that drawing on the Digitizing plate of smooth flat, can reach the mechanics feedback effectss that approximate groove is practised handwriting, making
User can perceive drawing and the difference of drawing on errors present on tram, assists force feedback system can pass through in real time
Offset correction allow users to perceive preferable draw and the actual intermediateness drawn, be capable of quantitative Cognitive Dissonance.
Simultaneously as revising the accumulation degree decreasing rendering error, user can be avoided because accumulation occurs during wieling the pen
Obvious errors lead to draw interrupts.
Further, described Web page module passes sequentially through card module and drive module connects to numerical digit plate module, can
Directly invoke bottom layer driving module.
Further, digit chip and motor vibration are arranged by paintbrush, can by the error seen on webpage intensity, by
Vision, via radio frequency, is then converted to the mechanics error intensity of tactile.When so that plate is painted, eye and handss reach a kind of state reconciliation.
Further, by assisted calibration module is installed additional on Digitizing plate, abnormal drawing can be fallen with automatic fitration and wield the pen,
Do not affect the fluency wield the pen, it is to avoid interruption of wieling the pen simultaneously.Make user need not cancel modification on software view, improve and paint
Draw efficiency.
Online drawing processing method disclosed by the invention, based on said apparatus, by the platform of online processing system of painting
Support, can pointedly user be trained, the required drawing parameter of drawing is divided into two classes, a class is to need training to survey
Examination, platform is not intervened, another kind of need not train test, webpage drawing in right value can be set automatically, subtract
Lack the burden of user's regulation, the parameter for some Real-time and Dynamic change of more difficult grasp is it is also possible to be somebody's turn to do by setting automatically
The mode of parameter right value ignores its effect, and then the training of parameter of can pointedly simply being painted.
Further, by increasing contrast district in Web page module, can be by rendering parameter curve Dynamic Display, on the one hand
Complete the Parameter analysis to mission area picture, facilitate user to understand the method drawn, so that user's real-time perception is arrived
The gap of drawing parameter, can carry out study adjustment in drawing process in real time.
In sum, the present invention paint online processing system and method easy and simple to handle, convenient, time saving and energy saving, can be real-time
The state parameter error of the online drawing of feedback, so that user understands the difference with original works, can quantitatively provide scoring simultaneously
As a result, user is made can to experience the process of painting skill raising in multiple exercise.
Below by drawings and Examples, technical scheme is described in further detail.
[brief description]
Fig. 1 is Web page module schematic diagram of the present invention；
The flow chart that Fig. 2 paints for the first stroke of a Chinese character of the present invention；
Fig. 3 completes for stroke of the present invention flow chart of post processing；
The flow chart that Fig. 4 calculates for final score；
Fig. 5 is present system structural representation；
Fig. 6 is that in marking system of the present invention, parameter chooses flow chart；
Fig. 7 is assisted calibration modular structure schematic diagram of the present invention.
[specific embodiment]
Refer to shown in Fig. 5 and Fig. 7, the invention discloses a kind of online processing system of painting, include numerical digit plate module with
Paintbrush, is connected by rf radio frequency between described numerical digit plate module and described paintbrush, and described numerical digit plate module is used for sensing and judges institute
State position and the movable information of paintbrush, also include assisting force feedback module, described auxiliary force feedback module is used for the institute of collection
State pen position and movable information is sent to described numerical digit plate module and after comparison process, described paintbrush is revised in real time.
Wherein, the apparatus system of auxiliary force feedback is made up of five parts, and the superiors are 501 Web page modules, produce as event
Raw source, next layer is 502 card modules, is responsible for connecting described Web page module and drive module, only makees forwarding capability.Again to
It is 503 drive modules down, finally for hardware unit 504 numerical digit plate module and 505 electromagnetic screen paintbrushes, paintbrush is provided with digit chip
Processing module and motor vibration module, digit chip processing module receives the feedback information of described numerical digit plate module, and according to institute
Stating feedback information controls described motor vibration module vibrations to realize force feedback.
During feedback, event is transmitted successively from top to bottom, after reaching numerical digit plate module, numerical digit plate module transmitting rf radio frequency letter
Number, paintbrush receives radiofrequency signal, and the digital processing chip of paintbrush, according to signal strength, is converted to the electric current of respective strengths, enters one
Step ground, electric current completes vibrating function by the motor apparatus installed on pen, to reach force feedback effect.
It is additionally provided with the assisted calibration module for Exception Filter jitter error, described assisted calibration mould in numerical digit plate module
Block is connected with described drive module, for receiving the standard information of the described paintbrush that described drive module sends and real-time position respectively
Put, movable information carries out contrast process.Described assisted calibration functional module includes path analysis module, acquisition module and error meter
Calculate module, described path analysis module is connected with described drive module, for receiving the standard routes that described drive module sends
Information is simultaneously sent to described error calculating module, and described acquisition module is for the described pen position of reading and movable information in real time simultaneously
It is sent to described error calculating module, described error calculating module is connected with described drive module through input reporting module, uses
When in described pen position and movable information appearance larger error, it is modified processing.
During studying painting, by assisted calibration function is installed additional to numerical digit plate module, can effectively filter out abnormal shake
The drawing error causing.As shown in fig. 7, numerical digit plate module installs 703 and 705 two modules additional, 703 path analysis module be used for from
Drive module receives paintbrush track to be practised, and in drawing process, acquisition module 704 reads the paintbrush position collecting in real time
Confidence ceases, and 705 error calculating module are responsible for calculating and plotting error, when error in the reasonable scope when, do not make any process, by
706 input reporting module directly report drive module in real time.Conversely, when there is larger jitter error, abandoning reporting, but
Because paintbrush moves a segment distance in numerical digit plate module, and the operation principle according to numerical digit plate module, the position letter reporting
Breath, is to be reported based on the contact position of paintbrush sum digit plate module, and therefore this segment distance error will when reporting position next time
Carry out position correction, the distance vector of correction, that is, deduct the vector of error, error calculating module is responsible for safeguarding this error amount,
If one time lines draw out existing multiple error, carry out the superposition of error vector, after user's lift pen, error resets.
A kind of processing method of online drawing processing system, comprises the following steps:
S1: painted after Web page module chooses drawing parameter, described drawing parameter includes position, color, thickness, pen
Pressure；
S2: real time record drawing parameter, and carry out contrast feedback error and be modified to paintbrush with canonical parameter；
S3: according to actual drawing parameter, drawing is contrasted and score.
As described in this document, user opens online drawing webpage using client devices.
Refer to shown in Fig. 1, Web page module comprises mission area 101 and canvas area 102.Mission area is treated for displaying
Copy picture piece, canvas area is used for user and creates drawing.Drawing only points at lines drawing and a color filling, does not include image
Circle in element and usual painting software, rectangle, line, text and other kinds of element.Lines itself can carry according to rule
Take set of characteristic points.
When each pen is drawn a picture, there are multiple parameters, such as thickness, color, speed or pen pressure, be generally divided into two kinds of parameters, one
Planting is preset parameter, and during currently wieling the pen, numerical value keeps constant, and another kind is variable element, and the motion value of random notes is continuous
Change.
Contain the works for study drawing in website, choose one of works in mission area when learning every time and paint
System, each works is made up of one group of lines, and each lines can extract out different characteristic points, similar for calculated curve
Degree.
Painting canvas can have smoothness attribute, the easy degree drawn for reaction.And smoothness attribute can dynamically change
Become, change according to the similarity being curved lines.
Study draw when, the lines content that stroke-starting position, each pen complete, in addition draw direction be probably all difference
's.Therefore, lines itself have to be detachable combinative.Next to that solving test to choose which drawing parameter, test parameter
Carry out intelligence by different exercise species flexibly to choose, the parameter acquiescence do not tested is known using the corresponding lines of mission area
Value, when user paints, the parameter do not tested can reach in drawing process and carry out Automatic Program row and change, and participates in without user.
Finally need solution is then the various scoring algorithms of different test parameters.
Refer to shown in Fig. 2, when 201 user's first stroke of a Chinese character are drawn；202 systems find approximate one of pen-down position according to position
Curve；203 users also can switch the custom order that curve meets user by selecting；Selection mode includes keyboard shortcut
Or touch pen button；After 205 users select, according to actual exercise needs, setting drawing preset parameter, is allowed to and task automatically
The parameter of the corresponding lines in region is identical, and painting canvas is somewhat adapted to Select Error, and user's first stroke of a Chinese character is drawn, when paintbrush often moves
After dynamic certain distance, calculate the offset vector α with lines same characteristic features point selected by mission area.
Ensuing drafting, the lines difference of the current drafting of 206 real time record, and feedback error, calculate current point and
The ranging offset vector β of lines same characteristic features point selected by mission area, if α and β is equal then it is assumed that current draw not by mistake
Difference.If remembering error vector γ=β-α, the curve distance of the two neighboring characteristic point that note is drawn is θ, noteFor the percentage fraction of current stroke position, in addition to scoring, especially, open feedback modifiers function, can
Be modified in real time process, revise be exactly by opposite direction correction from current point to γ, if corrected range is equal to γ, can
Fully return to task image level, alternatively, carry out part correction and experience error using user, prop up in paintbrush simultaneously
In the case of holding, carrying out force feedback so that becoming difficult to the drafting in γ direction, becoming different to the reciprocal drafting of γ.Institute is a little successively
Analogize, processed all characteristic points and terminated until lifting pen.
Further, except position can be used for scoring, the pen in the color of paintbrush selection, thickness, and drawing process
Pressure may be used to score.In terms of color, thickness can be come by the numerical error of mission area and canvas area homologous pair bar parameter
Point counting number, and pen pressure is the parameter of dynamic change, when drawing, with position x, y-coordinate one reacts the dynamic letter of current time
Breath.A kind of scoring algorithm based on pen pressure is to complete after one, respectively displacement-the pressure sensitivity of two contrast lines of matching
Curve, the normalization of go forward side by side row distance and pressure sensitivity is conveniently compared.Then the integration taking difference section absolute value is pressure sensitivity fraction.For
Preferably real-time exhibition difference, can contrast feedback areas Dynamic Display two pressure sensitivity curves single 103, mission area
Due to for contents known, can all directly show, the pressure sensitivity curve of canvas area is that similar oscillographic mode is real to pressure sensitivity curve
When show, two pressure sensitivity curves are shown in the same area, can intuitively find out Real-time Error.
Refer to shown in Fig. 3,301 user's lift pens, complete to draw current stroke；302 now Detection task regions selected
Whether lines compare completes；If 303 have completed, count the average mark of whole lines；If 304 lift pen in advance, will be selected
Lines are decomposed into be drawn part and not to draw part；305 give drawn lines marking, be masked as drawing simultaneously, no longer by
Choose.Do not draw part to may continue to drafting and choose.If not lifting pen after drafting current stroke yet, automatically terminate to 303 process
As a result, and repeat 202 automatically select close curve start draw.
The following is the explanation to automated decision system
After user terminates drawing, system is evaluated and tested according to the difference of drawing image and reference picture.Evaluation and test angle has figure
Shape and image two ways.Drawing process is compared in figure evaluation and test, and image evaluation and test is then the final drawing result of comparison.Common paint
Draw the exercise of training packets vinculum bar and color exercise, figure evaluation and test is suitable for lines exercise, and image evaluation and test is suitable for color exercise.
Refer to shown in Fig. 4, have calculated that difference scores due in drawing process, complete 401, user submits to
After works, the lines of all selected mistakes are counted average mark by 402, do not draw lines for counting in unfinished portion 403
Proportion in all lines, carries out corresponding deduction of points process.Then the fraction of 404 calculating image similarities, image phase are carried out
There are ways to calculate in image procossing like degree and realize, including rectangular histogram contrast, sift (scale-invariant
Feature transform, Scale invariant features transform) etc. image characteristics extraction contrast, comprehensive all of above knot in 405
Really, calculate user finally to paint fraction.
Refer to shown in Fig. 6, intelligence is chosen drawing parameter and scored, the function of exercise works is provided and calculates works
Draw difficulty, the exercise achievement of exercise user is counted simultaneously.
After 601 users open works；The drafting difficulty of 602 this works of land identification, draws difficulty and further segments
The principle being calculated based on variance statistic based on prior art for the difficulty of various diagram parameters, difficulty calculating, for fixing ginseng
Number, is counted in units of lines, for running parameter, is carried out statistical computation knot with all data that each lines collects
Really, finally all lines take average；603 platforms are responsible for recording user profile, and when each user submits exercise scoring to, platform arranges
The achievement of each drawing parameter, the difficulty in combination with this works parameter is adjusted.Platform is with last score calculation several times
This parameter drawing level of this user；604, in new exercise is tested, filter out the parameter especially difficult to user and have held
Easy parameter, alternatively, user can select to abandon this strobe utility；In 605, parameter tags are two classes, and a class is non-mistake
The test parameter of filter, is obtained by user's drawing input, another kind of is the non-test parameter filtering out, in drawing process in exercise
In be automatically set using correct value, and participate in without user so that user becomes simpler during studying painting.
Submit to after exercise through multiple users, each task picture there has been a series of user's exercise list and obtains
Point, user can select to check the works of other users, and including drawing process, or even user can select other user's works
Afterwards, automatically tested and assessed out the similarity with this works for oneself works by backstage of painting online.
In the learning process of drawing, for different exercise modes, required algorithm is differentiated.For example it is directed to
Lines are practised, then need not pay close attention to its color parameter, can first do image black and white binary conversion treatment doing, it is to avoid color when image compares
Affect final appraisal result.When being and for example directed to color exercise, can be directly multiple by all lines of mission area when exercise starts
Make canvas area, freely painted in canvas area by user, during scoring, then emphasis considers the difference of two area image rgb values
Different.
Above content technological thought only to illustrate the invention, it is impossible to limit protection scope of the present invention with this, every is pressed
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, each fall within claims of the present invention
Protection domain within.
Claims (10)
1. it is characterised in that including numerical digit plate module and paintbrush, described numerical digit plate module is used for a kind of online processing system of painting
Sensing judges position and the movable information of described paintbrush, also includes assisting force feedback module, described auxiliary force feedback module is used for
The described pen position of collection and movable information are sent to described numerical digit plate module after comparison process, described paintbrush is entered
Row is revised in real time.
2. a kind of online processing system of painting according to claim 1 is it is characterised in that described auxiliary force feedback module bag
Include the Web page module that drawing display interface is provided for user, described Web page module passes sequentially through card module and drive module connects
It is connected to described numerical digit plate module, be connected with described paintbrush by described numerical digit plate module and fed back, described card module will connect
The described Web page module information receiving is transmitted to after drive module is processed and is sent to numerical digit plate module.
3. a kind of online processing system of painting according to claim 2 is it is characterised in that described paintbrush is provided with digital core
Piece processing module and motor vibration module, described digit chip processing module receives the feedback information of described numerical digit plate module, and
Described motor vibration module vibrations are controlled to realize force feedback according to described feedback information.
4. according to claim 2 a kind of online paint processing system it is characterised in that described numerical digit plate module with described
Connected by rf radio frequency between paintbrush.
5. a kind of online processing system of painting according to claim 2 is it is characterised in that also set in described numerical digit plate module
It is equipped with the assisted calibration module for Exception Filter jitter error, described assisted calibration module is connected with described drive module, use
Carry out at contrast in the standard information and real time position, movable information receiving the described paintbrush that described drive module sends respectively
Reason.
6. a kind of online processing system of painting according to claim 5 is it is characterised in that described assisted calibration functional module
Including path analysis module, acquisition module and error calculating module, described path analysis module is connected with described drive module, uses
In receiving the standard routes information that described drive module sends and being sent to described error calculating module, described acquisition module is used for
Read described pen position and movable information in real time and be sent to described error calculating module, described error calculating module is through defeated
Enter reporting module to be connected with described drive module, for entering to it when larger error occurs in described pen position and movable information
Row correcting process.
7. a kind of processing method of online drawing processing system according to any one of claim 1 to 6, its feature exists
In comprising the following steps:
S1: painted after Web page module chooses drawing parameter, described drawing parameter includes position, color, thickness, pen pressure；
S2: real time record drawing parameter, and carry out contrast feedback error and be modified to paintbrush with canonical parameter, parameter comparison is bent
Line shows in real time on Web page module；
S3: according to actual drawing parameter, drawing is contrasted and score.
8. a kind of online processing method of painting according to claim 7 is it is characterised in that described Web page module includes task
Area, painting canvas area and contrast feedback area, described mission area is used for providing standard drawing drawing curve sample, and described painting canvas area is used for user
Drawing, described contrast feedback area is used for showing the pressure sensitivity curve of mission area and the pressure sensitivity curve in painting canvas area simultaneously.
9. a kind of online processing method of painting according to claim 7 is it is characterised in that in step s2, when paintbrush often moves
After dynamic certain distance, calculate the offset vector α with lines same characteristic features point selected by mission area, ensuing drafting, calculate current
The ranging offset vector β of point and lines same characteristic features point selected by mission area, if α and β is equal then it is assumed that current draw not by mistake
Difference, if remember error vector γ=β-α, the curve distance of the two neighboring characteristic point that note is drawn is θ, noteFor the percentage fraction of current stroke position, by opposite direction correction from current point to γ, if corrected range etc.
It is same as γ, then can fully return to task image level.
10. a kind of online processing method of painting according to claim 9 is it is characterised in that when executing distance correction pair
Paintbrush carries out force feedback so that becoming difficult to the drafting in γ direction, becomes different to the reciprocal drafting of γ, now color and thickness information
Keep constant in the drawing process of each, with 100 subtract the Error Absolute Value of arranges value during the first stroke of a Chinese character and standard value again divided by
The maximum of value can take advantage of 100 again；
The calculation of color error is that the error sum of rgb component is averaged again；Pressure sensitivity is to be continually changing in drawing process
, advanced row numerical intervals conversion, set 0 for no pressure sensitivity, 100 is maximum pressure sensitivity, subtracts all pressure sensitivity collecting with 100 absolute
Value error is averaged.
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Cited By (6)
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| CN107704109A (en) * | 2017-07-11 | 2018-02-16 | 张晓军 | Study drawing pen is far controlled in a kind of intelligent cloud computing |
| CN107734056A (en) * | 2017-11-07 | 2018-02-23 | 北京仿真中心 | A kind of online collaboration drawing board based on NodeJS technologies |
| CN109243244A (en) * | 2018-08-13 | 2019-01-18 | 广东小天才科技有限公司 | Writing scoring method, device, equipment and storage medium |
| CN111341444A (en) * | 2019-12-31 | 2020-06-26 | 东莞市东全智能科技有限公司 | Intelligent drawing scoring method and system |
| CN114727142A (en) * | 2022-03-30 | 2022-07-08 | 海信视像科技股份有限公司 | Display device and collaborative drawing method |
| CN115686222A (en) * | 2022-11-18 | 2023-02-03 | 青岛酒店管理职业技术学院 | Virtual portrait drawing system based on mixed reality technology |
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