CN109901714A - A kind of electronics paper pen system and its control method - Google Patents
A kind of electronics paper pen system and its control method Download PDFInfo
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- CN109901714A CN109901714A CN201910149152.0A CN201910149152A CN109901714A CN 109901714 A CN109901714 A CN 109901714A CN 201910149152 A CN201910149152 A CN 201910149152A CN 109901714 A CN109901714 A CN 109901714A
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Abstract
The invention discloses a kind of electronics paper pen system and its control methods, and the system comprises electronic pen, Electronic Paper and AR glasses, electronic pen is equipped with the first fixed point mark, and Electronic Paper is equipped with the second fixed point mark；AR glasses include processor, display module and two identical cameras, processor identifies the first fixed point mark and the second fixed point mark from image captured by two cameras, and the position according to the first fixed point mark and the second fixed point mark in the image captured by two cameras, the posture of electronic pen and Electronic Paper is obtained by vision range finding method；Processor obtains operational order according to the attitudes vibration of electronic pen；Then posture and the operational order of the processor according to Electronic Paper, by showing content.The present invention realizes the interaction of electronics paper pen system, user can interact under AR environment using paper pen by AR glasses identification fixed point mark.The present invention can be widely applied to augmented reality field.
Description
Technical field
The present invention relates to augmented reality field, especially a kind of electronics paper pen system and its control method.
Background technique
Under overall situation now, become main trend with no paper at all, traditional with no paper scheme is used based on Intelligent flat
Family can be drawn in the enterprising row write of Intelligent flat, without having to worry about writing full problem, the form touched due to the input of Intelligent flat,
Therefore there is no ink without worry pen.
But Intelligent flat also has its drawback, for example, the content that user writes on Intelligent flat can be seen by the people of one side
It arrives, confidentiality is poor.And AR technology (augmented reality) can be very good to solve the problems, such as this, because interior shown by AR glasses
Hold, only user oneself it can be seen that.But AR glasses do not have the peripheral hardwares such as electronics paper pen usually at present, are unable to complete writing
Function.
Summary of the invention
In order to solve the above technical problems, it is an object of the invention to: a kind of electronics paper pen system and its control method are provided,
User can complete to write operation in the environment of display enhancing.
The first technical solution adopted by the present invention is:
A kind of electronics paper pen system, including electronic pen, Electronic Paper and AR glasses, the both ends of the electronic pen are equipped with first
Fixed point mark, the Electronic Paper are surrounded by least three second fixed point marks；
The AR glasses include processor, display module and two identical cameras, and the camera is used for shooting figure
Picture, the processor identify that the first fixed point mark and the second fixed point are identified from image captured by two cameras, and according to
The position of first fixed point mark and the second fixed point mark in the image captured by two cameras, is obtained by vision range finding method
The posture of electronic pen and Electronic Paper；
The processor obtains operational order according to the attitudes vibration of electronic pen；Then processor is according to the appearance of Electronic Paper
State and the operational order, the content being superimposed upon on Electronic Paper image is shown by display module.
Further, the electronic pen includes the first power module, key and the first communication for communicating with AR glasses
Module, the first communication module send key command to AR glasses when key is pressed, and the processor receives key
After instruction, according to the attitudes vibration of electronic pen, operational order is obtained.
Further, the Electronic Paper includes second power supply module, touch screen and the second communication for communicating with AR glasses
Module；The touch screen is used to detect the touch track of user, and the touch track of user is sent to by the second communication module
AR glasses；The processor obtains the content that user inputs in Electronic Paper according to the touch track of user；The processor root
Position or the posture that the content that user inputs in Electronic Paper is adjusted according to the operational order, obtain being superimposed upon Electronic Paper image
On content.
Further, third communication module is equipped in the AR glasses, the third communication module is used to communicate mould with first
Block and second communication module communication, the first communication module, second communication module and third communication module are bluetooth module.
Further, the touch screen is equipped with toolbar, and Electronic Paper sends work when sending the touch track of user
Has type.
Further, the second fixed point mark is located on three angles of Electronic Paper.
Further, the vision range finding method is calculated by the following formula the coordinate P (x, y, z) of measured point:
Wherein, d indicates alternate position spike of the measured point in the image that two cameras shoots, b two cameras of expression away from
From f indicates that the focal length of camera, u1 indicate that abscissa of the measured point in the image captured by first camera, v1 indicate quilt
Ordinate of the measuring point in the image captured by first camera.
Second of technical solution adopted by the present invention is:
A kind of control method of electronics paper pen system, comprising the following steps:
It obtains two cameras and takes image；
Identify the first fixed point mark of electronic pen and the second fixed point mark of Electronic Paper；
According to the position of the first fixed point mark and the second fixed point mark in the image captured by two cameras, pass through view
Poor telemetry obtains the posture of electronic pen and Electronic Paper；
According to the attitudes vibration of electronic pen, operational order is obtained；
According to the posture of Electronic Paper and the operational order, the content being superimposed upon on Electronic Paper image is shown.
Further, the posture according to Electronic Paper and the operational order, display are superimposed upon interior on Electronic Paper image
Hold, specifically include:
Obtain the touch track of user；
According to the touch track of user, the content that user inputs in Electronic Paper is obtained；
Position or the posture that the content that user inputs in Electronic Paper is adjusted according to the operational order, are superimposed upon
Content on Electronic Paper image；
Show the content being superimposed upon on Electronic Paper image.
Further, the vision range finding method is calculated by the following formula the coordinate P (x, y, z) of measured point:
Wherein, d indicates alternate position spike of the measured point in the image that two cameras shoots, b two cameras of expression away from
From f indicates that the focal length of camera, u1 indicate that abscissa of the measured point in the image captured by first camera, v1 indicate quilt
Ordinate of the measuring point in the image captured by first camera.
The beneficial effects of the present invention are: the present invention identifies the fixed point mark in Electronic Paper and electronic pen by AR glasses, with
It determines the posture of Electronic Paper and electronic pen, and shows the superposition content in Electronic Paper, shape in AR glasses according to the posture of the two
At a kind of feeling that user writes in Electronic Paper, meanwhile, the content that user writes in Electronic Paper other people can not see,
Good confidentiality meets the demand that user carries out AR interaction by electronics paper pen.
Detailed description of the invention
Fig. 1 is a kind of module frame chart of the electronics paper pen system of specific embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the electronic pen of specific embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of the Electronic Paper of specific embodiment of the present invention；
Fig. 4 is a kind of module frame chart of the AR glasses of specific embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of the vision range finding method principle of specific embodiment of the present invention；
Fig. 6 is a kind of flow chart of the control method of the electronics paper pen system of specific embodiment of the present invention.
Specific embodiment
The present invention is further detailed with specific embodiment with reference to the accompanying drawings of the specification.
Referring to Fig.1, present embodiment discloses a kind of electronics paper pen systems comprising electronic pen, Electronic Paper and AR glasses.
Referring to Fig. 2, the both ends of the electronic pen are equipped with the first fixed point mark 201.The first fixed point mark 201 is red
Outer mark can be realized by infrared light lamp bead.It is of course also possible to be substituted by pattern identification.
Referring to Fig. 3, the Electronic Paper is surrounded by least three second fixed point marks 301.The second fixed point mark
301 be infrared mark, can be realized by infrared light lamp bead.It is of course also possible to be substituted by pattern identification.
Referring to Fig. 4, the AR glasses include processor, display module and two identical cameras (the first camera and
Second camera), for the camera for shooting image, the processor identifies the from image captured by two cameras
Certain point identification and the second fixed point mark, and according to captured by identifying the first fixed point and the second fixed point mark is in two cameras
Position in image obtains the posture of electronic pen and Electronic Paper by vision range finding method；Certainly, two cameras of AR glasses are
In approximately the same plane, distribution design can be carried out with reference to the position of human eye, the direction of the two is parallel.In other words two
A camera is the both sides for being symmetrically dispersed in AR glasses.
In the present embodiment, camera is realized using the camera that can shoot infrared light, can take infrared mark,
Also the camera for having distance measurement function is selected, with auxiliary coordinate operation.Due to there is multiple fixed points to mark in Electronic Paper and electronic pen
Know, therefore the coordinate relative to AR glasses can be identified by each fixed point of determination, to obtain the posture of Electronic Paper and electronic pen.
Such as electronic pen, it can be abstracted as a straight line in systems, two o'clock can determine the straight line.Similarly, Electronic Paper is in system
In can be abstracted as a planar rectangular, it is only necessary to three be not on same straight line fixed points mark can determine its appearance
State.
Wherein, vision range finding method principle is as follows:
Referring to Fig. 5, it is assumed that the first camera 501 is identical with 502 performance parameter of second camera, and the focal length of the two is f,
And distance between the two is b, the coordinate of measured point is P (x, y, z), and measured point is in the image that the first camera 501 is shot
Coordinate be P1 (u1, v1), coordinate of the measured point in the image that second camera 502 shoot be P2 (u2, v2).It is assumed that the two
The image of shooting is imaged at focal length, then has following relationship:
Parallax is defined as: alternate position spike of the measured point in the image that two cameras are shot, i.e.,
Therefore it obtains:
Wherein, d indicates alternate position spike of the measured point in the image that two cameras shoots, b two cameras of expression away from
From f indicates that the focal length of camera, u1 indicate that abscissa of the measured point in the image captured by first camera, v1 indicate quilt
Ordinate of the measuring point in the image captured by first camera.
The processor obtains operational order according to the attitudes vibration of electronic pen；Then processor is according to the appearance of Electronic Paper
State and the operational order, the content being superimposed upon on Electronic Paper image is shown by display module.
After confirmation Electronic Paper and the posture of electronic pen, operational order can be obtained according to the attitudes vibration of electronic pen.Example
Such as, electronic pen is detected always toward moving right, it may be considered that electronic pen has input a horizontal line from left to right.Such as it detects
It is drawing a circle to electronic pen, it may be considered that electronic pen has input a circle.Certainly, in some embodiments, electronic pen is detected
Posture conditionally trigger, for example, can on electronic pen setting button, only press key pressing when, electronic pen
Notify AR Glasses detection attitudes vibration.Different operations can be switched by one or more key in this way, realize such as book
The operation such as write, pull, rotate, scale and delete.
In the present embodiment, Electronic Paper can by touching come input content, then by the content of touch input,
These contents can be superimposed on the image of the display area of Electronic Paper according to the posture of Electronic Paper, so that the effect that user is seen
Fruit is that have content in Electronic Paper.Certainly, these input later content and can be adjusted, such as electronic pen can will be certain
Content is pulled, is rotated.Although user can see the content in Electronic Paper by AR glasses, in reality, electronics
Paper does not show that any content, such Electronic Paper cost are very low.
As preferred embodiment, the electronic pen includes the first power module, key and is used to communicate with AR glasses
First communication module, the first communication module when key is pressed to AR glasses send key command, the processor
After receiving key command, according to the attitudes vibration of electronic pen, operational order is obtained.
In the present embodiment, first communication module is powered by the first power module, first power module can be by
What battery and DC-DC converter were constituted, when the button is pressed, first communication module sends preset key to AR glasses and refers to
It enables.Key command can there are many.After the processor of AR glasses receives key command, just the attitudes vibration of electronic pen is carried out
Then detection obtains corresponding operation instruction.Key command can be lasting signal, can also be referred to by sign on and end
Enable composition.
The present embodiment is by that can support a variety of different interactive operations in electronic pen setting button.For example, user is at certain
Pressed the button on a position, electronic pen to AR glasses send a key command, e.g. one dragging key command, then
AR glasses start to detect the attitudes vibration of electronic pen.Assuming that user draws to the right electronic pen, AR glasses can be according to electronic pen
Reference attitude determines operation object, such as determines that content pointed by electronic pen starting position is operation object.Then AR
Glasses determine the path that user pulls content, content are finally dragged to electronics according to the starting and ending posture of electronic pen
Position pointed by the end posture of pen.
As preferred embodiment, the Electronic Paper includes second power supply module, touch screen and is used to communicate with AR glasses
Second communication module；The touch screen is used to detect the touch track of user, and the second communication module is by the touch of user
Track is sent to AR glasses；The processor obtains the content that user inputs in Electronic Paper according to the touch track of user；Institute
Position or posture that processor adjusts the content that user inputs in Electronic Paper according to the operational order are stated, is superimposed upon
Content on Electronic Paper image.
In the present embodiment, the Electronic Paper of the present embodiment includes touch screen, and user can be by electronic pen directly in touch screen
On write picture, then Electronic Paper sends the content that inputs on the touchscreen of user to AR glasses by its second communication module.Using
Touch screen can promote the accuracy of input content as input equipment, while reduce AR glasses to the attitudes vibration of electronic pen
Detection reduces the identification operand of AR glasses.AR glasses are according to the position of Electronic Paper, then in user inputted in Electronic Paper
On the image for holding the display area for being superimposed upon Electronic Paper, so that user sees the content oneself inputted in Electronic Paper.
As preferred embodiment, in the AR glasses be equipped with third communication module, the third communication module be used for
First communication module and second communication module communication, the first communication module, second communication module and third communication module are equal
For bluetooth module.
Processor is logical by third communication module and Electronic Paper and electronic pen, and the present embodiment is using bluetooth module as communication
Module can closely keep stable communication, and Bluetooth communication scheme is mature, and development cost is low.
As preferred embodiment, the touch screen be equipped with toolbar, Electronic Paper send user touch track when,
Tool types are sent simultaneously.
In the present embodiment, toolbar is set on the touchscreen, the toolbar is to mark off to come from touch screen.Such as
Toolbar can have the different tools such as erasing rubber, red pen, writing brush.User can be by touch tool column come select tools class
Type, Electronic Paper can send tool types to AR glasses after user is selected, so that AR glasses know current tool types, with true
Determine the form of expression of the content of user's input.If user selects red pen, the content of user's input at this time should be red.
As preferred embodiment, the second fixed point mark is located on three angles of Electronic Paper.In the present embodiment, will
Second fixed point mark is arranged on three angles of Electronic Paper, can simplify operation, the fixed point mark of positioning principle such as two dimensional code.
The second fixed point mark, which can be set, also can be set in electronics recto in the side of Electronic Paper, as long as infrared light pinpoints
Mark can be identified.
Referring to Fig. 6, present embodiment discloses a kind of control method of electronics paper pen system, the present embodiment is used for above system
The processor of the AR glasses of embodiment comprising following steps:
Two S1, acquisition cameras take image；
The second fixed point mark of S2, the first fixed point mark for identifying electronic pen and Electronic Paper；
S3, the position according to the first fixed point mark and the second fixed point mark in the image captured by two cameras, lead to
It crosses vision range finding method and obtains the posture of electronic pen and Electronic Paper；
S4, the attitudes vibration according to electronic pen, obtain operational order；
S5, the posture according to Electronic Paper and the operational order show the content being superimposed upon on Electronic Paper image.
As preferred embodiment, the step S5 it specifically includes:
S51, the touch track for obtaining user；
S52, the touch track according to user obtain the content that user inputs in Electronic Paper；
S53, position or the posture that the content that user inputs in Electronic Paper is adjusted according to the operational order, are folded
The content being added on Electronic Paper image；
The content that S54, display are superimposed upon on Electronic Paper image.
For the step number in above method embodiment, it is arranged only for the purposes of illustrating explanation, between step
Sequence do not do any restriction, the execution of each step in embodiment sequence can according to the understanding of those skilled in the art come into
Row is adaptively adjusted.
It is to be illustrated to preferable implementation of the invention, but the present invention is not limited to the embodiment above, it is ripe
Various equivalent deformation or replacement can also be made on the premise of without prejudice to spirit of the invention by knowing those skilled in the art, this
Equivalent deformation or replacement are all included in the scope defined by the claims of the present application a bit.
Claims (10)
1. a kind of electronics paper pen system, it is characterised in that: including electronic pen, Electronic Paper and AR glasses, the both ends of the electronic pen
It is equipped with the first fixed point mark, the Electronic Paper is surrounded by least three second fixed point marks；
The AR glasses include processor, display module and two identical cameras, and the camera is for shooting image, institute
It states processor and identifies the first fixed point mark and the second fixed point mark from image captured by two cameras, and is fixed according to first
The position of point identification and the second fixed point mark in the image captured by two cameras, obtains electronic pen by vision range finding method
With the posture of Electronic Paper；
The processor obtains operational order according to the attitudes vibration of electronic pen；Then processor according to the posture of Electronic Paper and
The operational order shows the content being superimposed upon on Electronic Paper image by display module.
2. a kind of electronics paper pen system according to claim 1, it is characterised in that: the electronic pen includes the first power supply mould
Block, key and the first communication module for communicating with AR glasses, the first communication module is when key is pressed to AR
Glasses send key command, after the processor receives key command, according to the attitudes vibration of electronic pen, obtain operation and refer to
It enables.
3. a kind of electronics paper pen system according to claim 2, it is characterised in that: the Electronic Paper includes second source mould
Block, touch screen and the second communication module for being communicated with AR glasses；The touch screen is used to detect the touch track of user, institute
It states second communication module and the touch track of user is sent to AR glasses；The processor is obtained according to the touch track of user
The content that user inputs in Electronic Paper；The processor adjusts in user inputs in Electronic Paper according to the operational order
The position of appearance or posture obtain the content being superimposed upon on Electronic Paper image.
4. a kind of electronics paper pen system according to claim 3, it is characterised in that: be equipped with the third communication in the AR glasses
Module, the third communication module with first communication module and second communication module for communicating, the first communication module, the
Two communication modules and third communication module are bluetooth module.
5. a kind of electronics paper pen system according to claim 3, it is characterised in that: the touch screen is equipped with toolbar,
Electronic Paper sends the tool types of user's selection when sending the touch track of user.
6. a kind of electronics paper pen system according to claim 1, it is characterised in that: the second fixed point mark is located at electronics
On three angles of paper.
7. a kind of electronics paper pen system according to claim 1, it is characterised in that: the vision range finding method passes through following public affairs
The coordinate P (x, y, z) of formula calculating measured point:
Wherein, d indicates alternate position spike of the measured point in the image that two cameras are shot, and b indicates the distance of two cameras, f
Indicate that the focal length of camera, u1 indicate that abscissa of the measured point in the image captured by first camera, v1 indicate measured point
Ordinate in the image captured by first camera.
8. a kind of control method of electronics paper pen system as described in claim 1, it is characterised in that: the following steps are included:
It obtains two cameras and takes image；
Identification the first fixed point mark and the second fixed point mark in described image；
According to the position of the first fixed point mark and the second fixed point mark in the image captured by two cameras, surveyed by parallax
The posture of electronic pen and Electronic Paper is obtained away from method；
According to the attitudes vibration of electronic pen, operational order is obtained；
According to the posture of Electronic Paper and the operational order, the content being superimposed upon on Electronic Paper image is shown.
9. a kind of control method of electronics paper pen system according to claim 8, it is characterised in that: described according to Electronic Paper
Posture and the operational order, show the content that is superimposed upon on Electronic Paper image, specifically include:
Obtain the touch track of user；
According to the touch track of user, the content that user inputs in Electronic Paper is obtained；
Position or the posture that the content that user inputs in Electronic Paper is adjusted according to the operational order, obtain being superimposed upon electronics
Content on paper image；
Show the content being superimposed upon on Electronic Paper image.
10. a kind of control method of electronics paper pen system according to claim 8, it is characterised in that: the vision range finding
Method is calculated by the following formula the coordinate P (x, y, z) of measured point:
Wherein, d indicates alternate position spike of the measured point in the image that two cameras are shot, and b indicates the distance of two cameras, f
Indicate that the focal length of camera, u1 indicate that abscissa of the measured point in the image captured by first camera, v1 indicate measured point
Ordinate in the image captured by first camera.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910149152.0A CN109901714A (en) | 2019-02-28 | 2019-02-28 | A kind of electronics paper pen system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149152.0A CN109901714A (en) | 2019-02-28 | 2019-02-28 | A kind of electronics paper pen system and its control method |
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| CN201910149152.0A Pending CN109901714A (en) | 2019-02-28 | 2019-02-28 | A kind of electronics paper pen system and its control method |
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| CN111312012A (en) * | 2020-02-27 | 2020-06-19 | 广东工业大学 | Calligraphy exercise guiding method and device |
| CN112925413A (en) * | 2021-02-08 | 2021-06-08 | 维沃移动通信有限公司 | Augmented reality glasses and touch control method thereof |
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| CN208044543U (en) * | 2018-02-24 | 2018-11-02 | 江苏斯当特动漫设备制造有限公司 | A kind of AR interaction Art Gallerys showing equipment based on touch |
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Application publication date: 20190618 |