CN107027014A - A kind of intelligent optical projection system of trend and its method - Google Patents
A kind of intelligent optical projection system of trend and its method Download PDFInfo
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- CN107027014A CN107027014A CN201710178577.5A CN201710178577A CN107027014A CN 107027014 A CN107027014 A CN 107027014A CN 201710178577 A CN201710178577 A CN 201710178577A CN 107027014 A CN107027014 A CN 107027014A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
-
- 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
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/012—Head tracking input arrangements
-
- 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
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/013—Eye tracking input arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
Abstract
The invention provides a kind of intelligent projection display system of trend and its method, the system includes：Projecting cell；Context awareness unit, the change for recognizing the complete projected picture image of projecting cell and its environment；Target direction recognition unit, the purpose projecting direction of user is determined for being followed the trail of according to the directional information of user；First direction control unit, for changing the projecting direction of projecting cell and the collection direction of Context awareness unit simultaneously；CPU, it includes：Target direction processing unit, the rotational angle of first direction control unit is calculated for the directional information according to user；Image correction unit, projected picture image and its change information of environment for being gathered to Context awareness unit are analysed and compared, and carry out real-time projection image correction.The present invention can follow the trail of the purpose projecting direction of user in real time by target direction recognition unit, change the direction of projection lens in real time and carry out projected picture correction, realize high-quality intelligent Projection Display；A variety of occasions are can be applicable to, user is given different visual enjoyment and entertainment effect.
Description
Technical field
The present invention relates to digital projection display technology field, more specifically to a kind of intelligent optical projection system of trend and
Its method.
Background technology
With the development of science and technology, the particularly promotion of semiconductor technology, portable electronic equipment is constantly set
Meter is manufactured.The lifting of portable electric appts so that requirement of the user to the display device of man-machine interface increasingly towards
Miniature, giant-screen and high-resolution direction are developed.Under the promoting of users' tight demand, projector's technology is sent out in recent years
Exhibition is swift and violent, and the product such as DLP, LCOS is proposed that performance is high, size is small and lightweight portable projector one after another.
In projection field, due to the difference of usage scenario, the function that projector equipment possesses would also vary from.Example
Such as, in family or large-scale stage, projector equipment needs aobvious according to the multidirectional projection of the purpose projecting direction of user progress
When the showing, it is necessary to purpose projected position direction of projector equipment recognition and tracking user, and then change the projecting direction of projection lens, and
Carry out high-quality intelligence projection.Therefore, a kind of purpose projecting direction of traceable user, changes the side of projection lens in real time
To and carry out projected picture correction process, realize high quality projection display intelligent optical projection system and its method turn into project backward
One of the research emphasis in field.
The content of the invention
For above-mentioned technical problem, it is an object of the invention to provide it is a kind of can be real-time according to the purpose projecting direction of user
Ground changes projecting direction and carries out image correction process, and trend high-quality projection and the trend that can be used in several scenes can be achieved
Intelligent optical projection system and its method.User of the present invention can be people or robot or other animals.
To achieve the above object, the invention provides a kind of intelligent projection display system of trend, including:
Projecting cell, for projected picture Projection Display projection information；
Context awareness unit, the change for obtaining the complete projected picture image of projecting cell and its environment；
Target direction recognition unit, the purpose projecting direction of user is determined for being followed the trail of according to the directional information of user；
First direction control unit, changes the projecting direction and Context awareness unit of projecting cell by rotating simultaneously
Gather direction；And
CPU, with the projecting cell, Context awareness unit, target direction recognition unit and first direction
Control unit is connected；The CPU includes：Target direction processing unit, for the directional information according to user
To calculate the rotational angle of first direction control unit；And image correction unit, for acquired in Context awareness unit
Projected picture image and environment change information analysed and compared, carry out real-time projection image correction.
Preferably, the target direction recognition unit is that eye moves tracing unit, and moving direction according to the eye of user determines that it is anticipated
To projecting direction.It can be the wear-type eye tracker being independently arranged that the eye, which moves tracing unit, and it includes：Data are obtained in real time
Microsensor, wireless communication unit and minisize pick-up head；It can also be to include that the eye, which moves tracing unit,：The dynamic Context awareness of eye
Unit, second direction control unit and eye movement analysis unit；The eye rotating ring border recognition unit is used to gather user's in real time
Eye image；The second direction control unit changes the collection direction of the eye rotating ring border recognition unit by rotating；It is described
Eye movement analysis unit is used to compare the center of iris pupil in eye image and reference position, calculates analysis user's
The dynamic direction of eye；The eye rotating ring border recognition unit is preferably infrared collecting device.
Preferably, the target direction recognition unit is limbs target direction recognition unit, and the limbs may include：User
Head, gesture；According to the purpose projecting direction that user is determined with the swaying direction of account or gesture.The limbs target direction
Recognition unit can include for wear-type tracker：Gravity sensor.
Preferably, the intelligent projection display system of the trend also includes：Memory cell and wireless communication unit；The projection
Information can be the live fluoroscopic information from memory cell or from wireless communication unit；The Context awareness list
Member can be infrared three-dimensional tester or video camera.
Preferably, the projection image correction includes：Projection automatic focusing, projected image correction for direction and projected background
Color, brightness and the correction of concave-convex surface degree；The projected image correction for direction includes：Projected image deformity correction and
Correction for direction, makes the Founder of the projected picture after correction and user's eyes can general perspective image.
Preferably, the first direction control unit and/or second direction control unit be head or multi-dimensional movement platform,
Sphere formula can be achieved to rotate；The user can be people or robot or other animals.
Present invention also offers a kind of intelligent method for displaying projection of trend, comprise the following steps：
(S1) the purpose projecting direction of user is obtained according to the directional information of user；
(S2) rotational angle of first direction control unit is calculated according to the purpose projecting direction of user；
(S3) according to the rotational angle of first direction control unit, know the projecting direction and environment of projecting cell
The collection direction of other unit is towards the purpose projecting direction of user；
(S4) purpose projecting direction of the projecting cell according to the directional information of user along user carries out initial projection
Display；
(S5) projected picture image and environment change information are obtained by Context awareness unit；
(S6) the projected picture image and environment change information acquired in Context awareness unit are analysed and compared simultaneously
Carry out real-time projection image correction；
(S7) clear projection after projecting cell is corrected.
Preferably, the directional information of the user described in step (S1) is that eye moves direction, and it is true to move direction according to the eye of user
Its fixed purpose projecting direction；The eye, which moves direction, to realize that it includes by the wear-type eye tracker being independently arranged：Obtain in real time
Microsensor, wireless communication unit and the minisize pick-up head for evidence of fetching；The method of the purpose projecting direction for obtaining user
Can also be to include：Eye rotating ring border identification step, second direction rate-determining steps and eye movement analysis step；Know in the eye rotating ring border
Other step is used for the eye image for gathering user in real time；The second direction rate-determining steps change the eye rotating ring border by rotating
Collection direction in identification step；The eye movement analysis step is used for the center of iris pupil in eye image and benchmark
Position is compared, and the eye for calculating analysis user moves direction.
Preferably, the directional information of the user described in step (S1) is the swaying direction with account or gesture, thus
Determine the purpose projecting direction of user.The swaying direction with account or gesture can pass through gravity sensor etc.
Wear-type tracker is realized.
Preferably, the projection image correction described in step (S6) includes：Projection automatic focusing, projected image correction for direction with
And projected background color, brightness and the correction of concave-convex surface degree；The projected image correction for direction includes：Projected image deformity
Correction and correction for direction, make the Founder of the projected picture after correction and user's eyes can general perspective images.
Compared with prior art, the present invention has the advantages that：Due to trend of the present invention, intelligently projection is aobvious
Show system, including:Projecting cell；Context awareness unit；Target direction recognition unit；First direction control unit；Center processing
Unit, it includes：Target direction processing unit, and image correction unit, so trend of the present invention intelligence Projection Display
System and method, the purpose projecting direction of user can be followed the trail of in real time, changed the direction of projection lens in real time and thrown
Shadow Picture Calibration, realizes high quality projection display；This system can be applicable to large-scale stage and realize that the scene of virtual reality combination should
With.
Brief description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of the intelligent projection display system of trend of the present invention；
Fig. 2 is the flow chart of the preferred embodiment of the intelligent method for displaying projection of trend of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment to the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
Fig. 1 is the structural representation of the embodiment 1 of the intelligent projection display system of trend of the present invention；As shown in figure 1, described dynamic
To intelligent projection display system, including:Projecting cell 10, for projected picture Projection Display projection information；Context awareness list
Member 20, the change for obtaining the complete projected picture image of projecting cell and its environment；Target direction recognition unit 30, is used for
The purpose projecting direction for determining user is tracked according to the directional information of user；First direction control unit 40, it is same by rotating
When change projecting cell 10 projecting direction and Context awareness unit 20 collection direction；And CPU 50, with
Projecting cell 10, Context awareness unit 20, target direction recognition unit 30 and first direction control unit 40 are connected.It is described
CPU 50 includes：Target direction processing unit 51, first party is calculated for the directional information according to user
To the rotational angle of control unit 40；And image correction unit 52, for the shadowgraph gathered to Context awareness unit 20
Face image and environment change information are analysed and compared, and carry out real-time projection image correction.
In the present embodiment, the target direction recognition unit 30 is that eye moves tracing unit, and direction is moved according to the eye of user
Determine its purpose projecting direction；It can be the wear-type eye tracker being independently arranged that the eye, which moves tracing unit, and it includes：Obtain in real time
Microsensor, wireless communication unit and the minisize pick-up head for evidence of fetching；The wear-type eye tracker is the device being independently arranged,
It can be head-wearing device, the eye for closely accurately following the trail of user moves direction, then handle single from wireless communication unit to center
Member 50 transmits eye and moves bearing data.Certainly, it can also be to include that the eye, which moves tracing unit,：Eye rotating ring border recognition unit, second
Direction controlling unit and eye movement analysis unit；The eye rotating ring border recognition unit is used for the eye image for gathering user in real time；
The second direction control unit changes the collection direction of the eye rotating ring border recognition unit by rotating；The eye movement analysis list
Member is used to compare the center of iris pupil in eye image and reference position, and the eye for calculating analysis user moves direction；
The eye rotating ring border recognition unit is preferably infrared collecting device.
In addition, in the present embodiment, the target direction recognition unit 30 can also be limbs target direction recognition unit,
The limbs may include：The head of user, gesture；According to the purpose projection side that user is determined with the swaying direction of account or gesture
To；The limbs target direction recognition unit can include for wear-type tracker：Gravity sensor.
In the present embodiment, the intelligent projection display system of the trend also includes：Memory cell 60 and wireless communication unit
70；The projection information of the projecting cell 10 can be from memory cell 60 or real from wireless communication unit 70
When the projection information that receives；The Context awareness unit 20 can be infrared three-dimensional tester or video camera.The first party
It is head or multi-dimensional movement platform to control unit and/or second direction control unit, sphere formula can be achieved and rotates.
In the present embodiment, the projected picture image that image correction unit 52 is gathered in real time using Context awareness unit 20,
Projected image is corrected；The projection image correction includes：Projection automatic focusing, projected image correction for direction and projection
Background color, brightness and the correction of concave-convex surface degree；The projected image correction for direction include projected image deformity correction with
And correction for direction, make the Founder of the projected picture after correction and user's eyes can general perspective image.For example：When the dynamic direction of user's eye
Perspective plane background color and required Projection Display content contrast it is not high, it is impossible to when clearly showing, image correction unit 52
Processing can be corrected according to the projected picture image gathered, changes background color or font color of institute's projection information etc.
Deng the intelligent sharpening projection of realization；Or when the perspective plane in the dynamic direction of user's eye is uneven so that the shadowgraph projected
When face is discontinuous, image correction unit 52 can be corrected processing according to the projected picture image gathered, realize that intelligence is clear
Change projection.
Present invention also offers a kind of intelligent method for displaying projection of trend, as shown in Fig. 2 comprising the following steps：
(S1) the purpose projecting direction of user is obtained according to the directional information of user；
(S2) rotational angle of first direction control unit is calculated according to the purpose projecting direction of user；
(S3) according to the rotational angle of first direction control unit, know the projecting direction and environment of projecting cell
The collection direction of other unit is towards the purpose projecting direction of user；
(S4) purpose projecting direction of the projecting cell according to the directional information of user along user carries out initial projection
Display；
(S5) projected picture image and environment change information are obtained by Context awareness unit；
(S6) the projected picture image and environment change information acquired in Context awareness unit are analysed and compared simultaneously
Carry out real-time projection image correction；
(S7) clear projection after projecting cell is corrected.
In the present embodiment, the directional information of the user described in step (S1) is that eye moves direction, can be according to the eye of user
Dynamic direction determines its purpose projecting direction；The eye, which moves direction, to realize that it is wrapped by the wear-type eye tracker being independently arranged
Include：Microsensor, wireless communication unit and the minisize pick-up head of data are obtained in real time；In addition, the purpose for obtaining user
The method of projecting direction can also be to include：Eye rotating ring border identification step, second direction rate-determining steps and eye movement analysis step；
The eye rotating ring border identification step is used for the eye image for gathering user in real time；The second direction rate-determining steps are changed by rotating
The collection direction become in the eye rotating ring border identification step；The eye movement analysis step is used for iris pupil in eye image
Center is compared with reference position, and the eye for calculating analysis user moves direction.
In the present embodiment, the directional information of step (S1) user is the swaying direction of limbs, and the limbs can
Including：The head of user, gesture；According to the purpose projecting direction that user is determined with the swaying direction of account or gesture；The limb
The swaying direction of body can be realized by the wear-type such as gravity sensor tracker.
In the present embodiment, the projection image correction described in step (S6) includes：Projection automatic focusing, projected image direction
Correction and projected background color, brightness and the correction of concave-convex surface degree；The projected image correction for direction includes：Perspective view
As deformity correction and correction for direction, make the Founder of the projected picture after correction and user's eyes can general perspective image.
It is worth noting that, in inventive embodiments, the user can be people or robot or other animals, sheet
The intelligent projection display system of the described trend of invention and its method can apply to a variety of occasions.For example：In large-scale performance, use
Family is come to control the projecting direction of projecting cell in real time by target direction recognition unit, is carried on the back according to the need for stage performance in stage
The diverse location Projection Display related content of scape simultaneously carries out projection correction's processing, realizes that the beautiful stage of dazzling that virtual reality is combined is imitated
Really, the user can be performing artist or stage effect behind the scenes manipulation staff before the lights etc.；Or,
In family, owner or pet to control the projecting direction of projecting cell in real time by target direction recognition unit, can be not
Intelligent projection is carried out with time diverse location, the enjoyment experience of interactive recreation is realized；Also or, in large-scale dining room, by hotel owner
, can be according to different visitors or machine service person to control the projecting direction of projecting cell in real time by target direction recognition unit
Family demand, projection menu introduction or other entertainment contents, enrich the dining experience of customer.
In summary, the intelligent projection display system of trend of the present invention and its method, are recognized single by target direction
Member can follow the trail of the purpose projecting direction of user in real time, change the direction of projection lens in real time and carry out projected picture correction,
Realize high-quality intelligent Projection Display；A variety of occasions are can be applicable to, user is given different visual enjoyment and entertainment effect, had
There are considerable market prospects.
It is foregoing to the present invention specific illustrative embodiment description be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles and its reality of the present invention should
With so that those skilled in the art can realize and using the present invention a variety of exemplaries and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (12)
1. a kind of intelligent projection display system of trend, it is characterised in that including:
Projecting cell, for projected picture Projection Display projection information；
Context awareness unit, the change for recognizing the complete projected picture image of projecting cell and its environment；
Target direction recognition unit, the purpose projecting direction of user is determined for being followed the trail of according to the directional information of user；
First direction control unit, by the collection for rotating the projecting direction and Context awareness unit that change projecting cell simultaneously
Direction；And
CPU, is controlled with the projecting cell, Context awareness unit, target direction recognition unit and first direction
Unit is connected；The CPU includes：Target direction processing unit, by according to the directional information of user come based on
Calculate the rotational angle of first direction control unit；And image correction unit, for the throwing acquired in Context awareness unit
Shadow picture image and environment change information are analysed and compared, and carry out real-time projection image correction.
2. the intelligent projection display system of trend according to claim 1, it is characterised in that the target direction recognition unit
Tracing unit is moved for eye, moving direction according to the eye of user determines its purpose projecting direction.
3. the intelligent projection display system of trend according to claim 2, it is characterised in that the eye moves tracing unit bag
Include：Eye rotating ring border recognition unit, second direction control unit and eye movement analysis unit；The eye rotating ring border recognition unit is used for
The eye image of user is gathered in real time；The second direction control unit changes the eye rotating ring border recognition unit by rotating
Gather direction；The eye movement analysis unit is used to compare the center of iris pupil in eye image and reference position,
The eye for calculating analysis user moves direction.
4. the intelligent projection display system of trend according to claim 1, it is characterised in that the target direction recognition unit
For limbs target direction recognition unit, according to the purpose projecting direction that user is determined with the swaying direction of account or gesture.
5. the intelligent projection display system of trend according to any one of claim 1-4, it is characterised in that the trend intelligence
Energy projection display system also includes：Memory cell and wireless communication unit；The projection information is to come from memory cell either
Live fluoroscopic information from wireless communication unit；The Context awareness unit is infrared three-dimensional tester or video camera.
6. the intelligent projection display system of trend according to any one of claim 1-4, it is characterised in that the perspective view
As correction includes：Projection automatic focusing, projected image correction for direction and projected background color, brightness and concave-convex surface degree
Correction；The projected image correction for direction includes：Projected image deformity correction and correction for direction, make the projected picture after correction
It is upright and user's eyes can general perspective image.
7. the intelligent projection display system of trend according to claim 1 or 3, it is characterised in that the first direction control
Unit and/or second direction control unit are head or multi-dimensional movement platform, can realize that sphere formula is rotated；The user behaves
Or robot or other animals.
8. the intelligent method for displaying projection of a kind of trend, it is characterised in that comprise the following steps：
(S1) the purpose projecting direction of user is obtained according to the directional information of user；
(S2) rotational angle of first direction control unit is calculated according to the purpose direction of user；
(S3) according to the rotational angle of first direction control unit, the projecting direction and Context awareness list of projecting cell are made
The collection direction of member is towards the purpose projecting direction of user；
(S4) purpose projecting direction progress initial projection of the projecting cell according to the directional information of user along user is shown；
(S5) projected picture image and environment change information are obtained by Context awareness unit；
(S6) the projected picture image and environment change information acquired in Context awareness unit are analysed and compared and carried out
Real-time projection image correction；
(S7) clear projection after projecting cell is corrected.
9. the intelligent method for displaying projection of trend according to claim 8, it is characterised in that the finger of step (S1) user
Tropism information is that eye moves direction, and moving direction according to the eye of user determines its purpose projecting direction.
10. the intelligent method for displaying projection of trend according to claim 8, it is characterised in that the acquisition of the step (1) is used
The method of the purpose projecting direction at family includes：Eye rotating ring border identification step, second direction rate-determining steps and eye movement analysis step；
The eye rotating ring border identification step is used for the eye image for gathering user in real time；The second direction rate-determining steps are changed by rotating
The collection direction become in the eye rotating ring border identification step；The eye movement analysis step is used for iris pupil in eye image
Center is compared with reference position, and the eye for calculating analysis user moves direction.
11. the intelligent method for displaying projection of trend according to claim 8, it is characterised in that the user described in step (S1)
Directional information be, with the swaying direction of account or gesture, to thereby determine that the purpose projecting direction of user.
12. the intelligent method for displaying projection of trend according to claim 8, it is characterised in that the projection described in step (S6)
Image rectification includes：Projection automatic focusing, projected image correction for direction and projected background color, brightness and concave-convex surface journey
The correction of degree；The projected image correction for direction includes：Projected image deformity correction and correction for direction, make the projection after correction
Picture is upright and user's eyes can general perspective image.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710178577.5A CN107027014A (en) | 2017-03-23 | 2017-03-23 | A kind of intelligent optical projection system of trend and its method |
| PCT/CN2017/085727 WO2018171041A1 (en) | 2017-03-23 | 2017-05-24 | Moving intelligent projection system and method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710178577.5A CN107027014A (en) | 2017-03-23 | 2017-03-23 | A kind of intelligent optical projection system of trend and its method |
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| WO (1) | WO2018171041A1 (en) |
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| CN107704076A (en) * | 2017-09-01 | 2018-02-16 | 广景视睿科技（深圳）有限公司 | A kind of trend projected objects display systems and its method |
| CN107977082A (en) * | 2017-12-19 | 2018-05-01 | 亮风台（上海）信息科技有限公司 | A kind of method and system for being used to AR information be presented |
| CN108632594A (en) * | 2018-07-17 | 2018-10-09 | 王锐 | A kind of intelligence commodity information display system and method |
| CN109191939A (en) * | 2018-08-31 | 2019-01-11 | 广东小天才科技有限公司 | A kind of tripleplane's exchange method and smart machine based on smart machine |
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| CN109815939A (en) * | 2019-03-01 | 2019-05-28 | 北京当红齐天国际文化发展集团有限公司 | Projection display system and method based on human eye tracking |
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| CN109996051A (en) * | 2017-12-31 | 2019-07-09 | 广景视睿科技（深圳）有限公司 | A kind of trend projecting method that view field is adaptive, apparatus and system |
| CN110543230A (en) * | 2018-05-28 | 2019-12-06 | 广州彩熠灯光有限公司 | Stage lighting element design method and system based on virtual reality |
| CN110719451A (en) * | 2019-09-30 | 2020-01-21 | 深圳市火乐科技发展有限公司 | Projection adjusting method and related product |
| CN111031298A (en) * | 2019-11-12 | 2020-04-17 | 广景视睿科技（深圳）有限公司 | Method and device for controlling projection of projection module and projection system |
| WO2020143546A1 (en) * | 2019-01-07 | 2020-07-16 | 京东方科技集团股份有限公司 | Augmented reality system and control method |
| CN113052101A (en) * | 2021-03-31 | 2021-06-29 | 乐融致新电子科技(天津)有限公司 | Gesture recognition-based auxiliary physical education teaching method and device |
| CN113382220A (en) * | 2021-05-25 | 2021-09-10 | 中国联合网络通信集团有限公司 | Projection method based on intelligent lamp pole and intelligent lamp pole |
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