CN107174195A - Visual chart projecting method and VR spectacle vision table projecting apparatus based on VR technologies - Google Patents
Visual chart projecting method and VR spectacle vision table projecting apparatus based on VR technologies Download PDFInfo
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- CN107174195A CN107174195A CN201710342636.8A CN201710342636A CN107174195A CN 107174195 A CN107174195 A CN 107174195A CN 201710342636 A CN201710342636 A CN 201710342636A CN 107174195 A CN107174195 A CN 107174195A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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Abstract
The invention discloses a kind of visual chart projecting method based on VR technologies and VR spectacle vision table projecting apparatus, belong to optometry technical field.The visual chart projecting method of the present invention, step is：A) general international eyesight test standard Table storehouse is set up in VR systems；B) set up every width visual chart and project to the functional relation of VR display screen distances, and with the form flash of lantern slide to VR display screens；C) each width visual chart is numbered in VR systems, visual chart broadcast state and broadcasting speed is marked and controlled；D) multiple feedback options are set up to user in the multiple-choice question form of Weight for every width visual chart；E) statistical analysis of Weight is further done according to selection answer of the user in step d, the comprehensive detection eyesight of user is finally weighed in the form of totally giving a mark；F) export, preserve examining report.The method of the present invention is simple and easy to apply, reliable and stable；Visual projector light weight is convenient, with low cost, be convenient for carrying.
Description
Technical field
The present invention relates to a kind of visual chart projecting method and visual projector, VR is based on more specifically to one kind
The visual chart projecting method and VR spectacle vision table projecting apparatus of technology.
Background technology
Visual projector is a kind of medical science auxiliary equipment for being used to examine human eyesight of built-in visual chart.It is will be each
Lantern slide is made in kind of visual charts with different detection functions, makes optist when optometry is detected, by remote control control and selects
A kind of Vission detector that visual chart needed for selecting is projected on specific screen.Visual projector is most common in physical examination
, working, enter a higher school, joining the army etc. is required for for giving a test of one's eyesight, be judge whether eyeball ametropia, whether colour blindness etc. according to
According to.Optist judges vision condition roughly according to the feedback information of detected person, to reach the purpose of detection human eyesight.
Although traditional visual projector is made that tremendous contribution in the rough context of detection of eyesight, in Science and Technology Day crescent
Today that is different, advancing by leaps and bounds, some functions also need to it is perfect, its shortcoming also compare it is many, it is specific as follows：
1st, need the auxiliary of optist, optist control that eyesight projects by the conversational feedback with detected person away from
Selection from, visual chart is shown, improves testing cost.
2nd, a visual projector needs the composition such as projecting apparatus, display device and remote control, and cost of manufacture is somewhat expensive.
And weight is general in 5kg or so, clumsy, unsuitable movement gives a test of one's eyesight.
3rd, eyesight detection demand amount is big, and almost everyone more or less contacted, but conventional eye chart projecting apparatus is interconnected
Networking is poor, it has not been convenient to self-service to complete detection optometry, can not intelligence recommend care regimen etc. for patient.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to overcome conventional eye chart projecting apparatus above shortcomings there is provided one kind based on VR technologies
Visual chart projecting method and VR spectacle vision table projecting apparatus, using technical scheme, eyesight is set up using VR technologies
Table projects scene, and utilizes data analysis technique, and the testing result of multigroup visual chart is adjusted by weight and analyzed, and weighting is beaten
Point, more scientifically reflect the detection case of user, method is simple and easy to apply, reliable and stable, it is not necessary to the assistance of optist, save
Testing cost is saved, care regimen intelligently can be provided according to the testing result of user and eye protection is advised；VR spectacle visions
Table projecting apparatus eliminates entity display, projecting apparatus and remote controller, operation letter directly by the screen display function of VR glasses
It is single, flexible, light weight is convenient, be convenient for carrying, with low cost and being capable of self-service completion eyesight detection.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of visual chart projecting method based on VR technologies of the present invention, comprises the following steps：
A) general international eyesight test standard Table storehouse is set up in VR systems, there are different detection functions in the international eyesight test standard Table storehouse
Visual chart；
B) set up every width visual chart and project to the functional relation D of VR display screen distancesx=F (x), and by visual chart
With on the form flash of lantern slide to VR display screens；
C) projection control expression formula is set up in VR systems, each width visual chart is numbered, to visual chart broadcast state
It is marked, visual chart broadcasting speed is controlled；
D) multiple feedback options, each feedback option are set up to user in the multiple-choice question form of Weight for every width visual chart
Different degrees of detection granularity can be reflected；
E) detection and analysis algorithm is concluded, the algorithm further does Weight according to selection answer of the user in step d
Statistical analysis, finally weighs the comprehensive detection eyesight of user in the form of totally giving a mark；
F) export, preserve examining report.
Further, in step a, set up with general 32 kinds at present visual charts for representing different detection functions
Eyesight Table storehouse.
Further, in stepb, user is interacted by limb action or voice with VR systems, and VR systems are certainly
The dynamic demand according to user adjusts projector distance, user is seen most clearly picture；Examined in user using visual chart
Before survey, VR systems play the detection function of correspondence visual chart by the form of voice or word.
Further, in step c, user adjusts the picture of image by limb action or voice feedback to VR systems
Face size, definition and display format, display format be divided into that view picture sighting target is shown, single file sighting target is shown, single-row sighting target is shown and
Single sighting target shows that the broadcasting speed control of each width visual chart is average 0.2 second.
Further, in step d, the several of visual chart detection granularity can most be reflected by being taken out in the way of multiple-choice question
Option, each option distributes different weight size Wij, then single visual chart weight use Si=Wij× 100 (wherein：I ∈ [1,
32], j ∈ [Isosorbide-5-Nitrae]) realize many granularity Detections.
Further, in step e, single answer option is first analyzed, then power on demand according to every width visual chart
Weight ratio is weighted processing again, according to(wherein：N=32) calculated, finally marking provides synthesis
Testing result.
Further, in step f, obtain after testing result, be that user sets up tables of data, for subsequent query, contrast
Eyesight；VR network analyses user eyesight content of interest, analyzes the overall vision situation of user, provides the user eyesight shield
Manage suggested design and protection suggestion.
A kind of VR spectacle visions table projecting apparatus of the present invention, including VR glasses and the VR eyesights being encapsulated in VR glasses systems
Table projection software APP, the VR visual chart projection software APP are developed based on above-mentioned visual chart projecting method.
Further, described VR visual chart projection softwares APP interconnections networking, user purchases in the application shop of VR glasses
Buy, the software is installed, you can realize self-service detection.
3. beneficial effect
The technical scheme provided using the present invention, compared with existing known technology, with following remarkable result：
(1) a kind of visual chart projecting method and VR spectacle vision table projecting apparatus based on VR technologies of the invention, it is utilized
VR technologies set up visual chart projection scene, and utilize data analysis technique, and the testing result of multigroup visual chart is adjusted by weight
Analysis, and marking is weighted, more scientifically reflect the detection case of user, method is simple and easy to apply, reliable and stable, it is not necessary to test
The assistance of light teacher, saves testing cost, intelligently can provide care regimen according to the testing result of user and eye protection is built
View；VR spectacle vision tables projecting apparatus directly by the screen display function of VR glasses, compared with conventional eye chart projecting apparatus, removes
Entity display, projecting apparatus and remote controller, simple to operate, flexible, light weight is convenient, be convenient for carrying, with low cost and energy
Enough self-service completion eyesight detections；
(2) a kind of visual chart projecting method and VR spectacle vision table projecting apparatus based on VR technologies of the invention, Yong Hutong
Limb action or voice is crossed to interact with VR systems, compared with conventional eye chart projecting apparatus, it is not necessary to the assistance of optist, from
Help and give a test of one's eyesight, and not by external environmental interference, such as illumination, temperature are disturbed, and reliable and stable there is provided a kind of good inspection
Survey environment and experience；Also, before user is detected using visual chart, the form broadcasting pair that VR systems pass through voice or word
The detection function of visual chart is answered, allows user clearly to understand the item for needing to detect and effect；
(3) a kind of VR spectacle visions table projecting apparatus of the invention, is packaged into VR by VR visual chart control systems and applies shop
In a APP, it is arranged on after VR glasses by user, self-service detection and eye protection etc. can be achieved, light weight is convenient, uses base
In VR glasses as detection infrastructure, conventional vision projecting apparatus production method is overturned, fuselage light weight is moved easily detection and regarded
Power etc..
Brief description of the drawings
Fig. 1 is a kind of system flow chart of visual chart projecting method based on VR technologies of the present invention；
Fig. 2 is a kind of visual chart projection software APP of VR spectacle visions table projecting apparatus of present invention principle schematic；
Fig. 3 is is used to detect the partial vision table of human eyesight in the present invention；
Fig. 4 is a kind of eyesight score calculation algorithm pattern of visual chart projecting method based on VR technologies of the present invention.
Embodiment
To further appreciate that present disclosure, with reference to accompanying drawing, the present invention is described in detail.
Fig. 1 is a kind of system flow chart of visual chart projecting method based on VR technologies of the present invention, as shown in Figure 1, this
A kind of visual chart projecting method based on VR technologies of invention, first starts shooting VR glasses, will enter after completing system initialization
Initial display interface, is opened after VR visual chart projection softwares, and projection control system, which reads and projected from international eyesight test standard Table storehouse, to be regarded
Power table is to VR displays.After projector, the visual chart that VR control systems can be selected according to user passes through voice or word
Simple detection function introduction is carried out, to allow user to know to be detected part.When user clearly can not see projection clearly, it is necessary to
Notify VR systems to be adjusted by modes such as voice, touch-controls, and fed back in detection process and select vision assessment etc.
Level.Now, VR, which projects control system, can analyze the testing result of user, by the weight different to different visual charts, using adding
Weigh the mode of marking to assess the overall vision of user, naturally it is also possible to be estimated analysis to single visual chart.Finally, export
Examining report, informs the place that user should be noted, and provide protectiving scheme and suggestion.Contrast vision is facilitated to change in order to follow-up
Situation, can also set up database to deposit testing result for each user.
Fig. 2 is a kind of visual chart projection software APP of VR spectacle visions table projecting apparatus of present invention principle schematic, by
Shown in Fig. 2, the inspection software of VR spectacle vision table projecting apparatus mainly includes user terminal, hardware components and software section, Hardware Subdivision
VR- camera lenses, TFT- displays, microphone and headset, handle and control-rod, keyboard and mouse, Desktop Computing can mainly be had by dividing
Unit or graphics calculations unit etc.；Software section mainly has operating system, graphics subsystem, audio subsystem and outer vision with showing
Show program input subsystem etc., for entering line definition adjustment according to user's input feedback；User terminal mainly by human eye, hand,
Mouth and ear carry out Real-time Feedback finding visual chart image definition, and control visual chart broadcasting speed, projection pattern and assessment are inscribed
Deng progress eyesight detection.Visual chart in Fig. 2 is thrown into control system and is fabricated to the VR visual projector APP, and is encapsulated in VR
In eyewear applications shop, user can download, install and can obtain VR spectacle vision table projecting apparatus.
With reference to embodiment, the invention will be further described.
Embodiment
With reference to shown in Fig. 1, a kind of visual chart projecting method based on VR technologies of the present embodiment comprises the following steps：
A) VR software engineerings are used, such as Unity developing instruments, using Image Reconstruction Technology, set up logical in VR systems
There is the visual chart of different detection functions in international eyesight test standard Table storehouse, the international eyesight test standard Table storehouse；Because every kind of visual chart is represented
Detection function it is different, some focus on eyesights detection, and some focus on colour blindness anomalous trichromatisms detection etc., so being regarded by setting up these
Power table, could comprehensively detect, assess the vision condition of user, it is preferable that in step a, set up with general at present
32 kinds represent different detection functions visual chart eyesight Table storehouse, as shown in figure 3, illustrating 6 kinds of more common eyesights here
Table ((a)~(f) in Fig. 3), every kind of visual chart is made up of different pattern, in single visual chart again can according to the direction of pattern,
Shape detects different eye eyesights, wherein there is some visual charts to have detected whether astigmatism, if there is a colour blindness anomalous trichromatism
The eyesight Table storehouse of conventional eye chart projecting apparatus offer is provided Deng, details, be will not be repeated here.User passes through limb action or language
Sound is interacted with VR systems, and the visual chart of difference in functionality is projected on virtual high definition screen, it is not necessary to which extra entity shows
Show device；For the display screen of visual chart, by providing user in VR systems with highest resolution, minimum external interference
Best picture impression so that drop shadow effect is more preferable than traditional.
B) due to every width visual chart, in detection, the distance that presents may be different, it is therefore desirable to set up every width visual chart with
Project to the functional relation D of VR display screen distancesx=F (x), and visual chart is shown with the form flash of lantern slide to VR
On screen, general eyesight projector distance is 2.0~7.0 meters (standard is 5 meters)；In detection process, user is dynamic by limbs
Make or voice is interacted with VR systems, VR systems automatically adjust projector distance according to the demand of user, user is seen most
Clearly picture, specifically, user adjust the position of image by the input feedback of the appearance body such as hand, mouth, regulation image it is clear
Clear degree, VR systems are identified, analyze and handled the information of user's input, and continually entering and feed back according to user, press
The image definition being output on VR displays is adjusted according to visual chart projection control algolithm, therefore, there is no need to optist's
Participate in, VR optical projection systems can realize control automatically, save testing cost.Before user is detected using visual chart, VR systems
The detection function of correspondence visual chart is played by the form of voice or word, allow user clearly understand the item that needs to detect and
Effect.
C) projection control expression formula is set up in VR systems, each width visual chart is numbered, to visual chart broadcast state
It is marked, visual chart broadcasting speed is controlled；User adjusts figure by limb action or voice feedback to VR systems
Picture size, definition and display format of picture etc., display format can be divided into that view picture sighting target is shown, single file sighting target is shown, single-row
Sighting target is shown and single sighting target is shown, the broadcasting speed control of each width visual chart is average 0.2 second.
D) multiple feedback options, each feedback option are set up to user in the multiple-choice question form of Weight for every width visual chart
Different degrees of detection granularity can probably be reflected；The detection mode of every width visual chart is using the estimation items set in advance by weight
To carry out, being taken out in the way of multiple-choice question can most reflect that visual chart detects several options of granularity, and each option distribution is different
Weight size Wij, then single visual chart weight use Si=Wij× 100 (wherein：I ∈ [1,32], j ∈ [Isosorbide-5-Nitrae]) realize many
Degree detection.
E) detection and analysis algorithm is concluded, the algorithm further does Weight according to selection answer of the user in step d
Statistical analysis, finally weighs the comprehensive detection eyesight of user in the form of totally giving a mark；Specifically thrown using following visual chart
Shadow instrument assesses marking computational methods and carries out comprehensive grading：First analyzing single answer option, (i.e. single visual chart is assessed individual event and obtained
Point), then weight W on demand according to every width visual chartiRatio is weighted processing again, according to(its
In：N=32) calculated, finally marking provides comprehensive detection result.Comprehensive grading sample, form are briefly introduced with reference to Fig. 4
Include three columns, the weight on upper column represents the corresponding score value of each option in single visual chart, and different options, which has, to differ
The result of sample；The sequence number of intermediate hurdles represents the label of visual chart, the visual chart of type needed for being easily projected out by label,
Program is also convenient for carry out by weight calculation；The weight on lower column represents each visual chart weight shared in 32 kinds of visual charts altogether
Than.Assuming that WijThe weighted value shared by j-th of option of i-th of visual chart is represented, if each eyesight form item overall score is 100
Point, then this it is corresponding scoring be：
Si=Wij× 100 (wherein：I ∈ [1,32], j ∈ [Isosorbide-5-Nitrae]),
Assuming that WiRepresent the weight ratio that the i-th width visual chart is accounted in all visual charts, then finally comprehensive grading is：
(wherein：N=32),
Last calculation formula is：
(wherein：I ∈ [1,32], j ∈ [Isosorbide-5-Nitrae], n=32).
F) export, preserve examining report, obtain after testing result, be that user sets up tables of data, regarded for subsequent query, contrast
Power；VR network analyses user eyesight content of interest, analyzes the overall vision situation of user, provides the user eyesight nursing
Suggested design and protection suggestion.For example, in tracking, the feedback information of record user, projection control system can exist according to user
Details during use, such as, user need to detect protanopia anerythrochloropsia, then can select the visual chart；User wants to have detected whether
Astigmatism and axis of astigmatism size, then can select astigmatism visual chart；Normally whether user want to give a test of one's eyesight, then can select " E " type
Visual chart etc., for these different visual charts, VR projections control system can analyze user eyesight content of interest, point
Overall vision situation of user etc. is analysed, Eye Care suggested design and protection suggestion can be finally provided.
VR glasses are the typical VR equipment using VR technologies, and following VR glasses may generally make as present mobile phone
With so the visual chart projecting method based on VR technologies of the present invention has and more widely used.With reference to shown in Fig. 1 and Fig. 2,
A kind of VR spectacle visions table projecting apparatus of the present embodiment, including VR glasses and the VR visual charts projection being encapsulated in VR glasses systems
Software APP, the VR visual chart projection software APP are developed based on above-mentioned visual chart projecting method, so as to be using VR glasses
Quick, simply, easily self-service eyesight detection can be achieved.VR visual chart projection softwares APP interconnects networking, and user is in VR glasses
Bought using shop, the software is installed, you can realize self-service detection.The visual chart projecting method based on VR technologies of the present embodiment
And VR spectacle vision table projecting apparatus, it is different from traditional use projecting apparatus, display and the method for remote control, take full advantage of newest
VR technologies, if so user have purchased VR glasses, and in VR applies shop purchase, visual projector APP is installed, just
Self-service detection eye eyesight can be realized, using simple, conveniently.
A kind of the visual chart projecting method and VR spectacle vision table projecting apparatus based on VR technologies of the present invention, utilizes VR technologies
Visual chart projection scene is set up, and utilizes data analysis technique, the testing result of multigroup visual chart is adjusted by weight and analyzed, and
Weighting marking, more scientifically reflects the detection case of user, method is simple and easy to apply, reliable and stable, it is not necessary to optist's
Assist, save testing cost；Testing result is finally clearly informed to user, and there is provided eye protection suggestion.Made using VR glasses
For detection infrastructure, using correlation techniques such as newest VR technologies, internet+and visual chart projections, create a kind of brand-new
VR visual projectors, overturned conventional vision projecting apparatus production method, compared with conventional eye chart projecting apparatus, eliminated reality
Body display, projecting apparatus and remote controller, simple to operate, flexible, light weight is convenient, be convenient for carrying, it is with low cost, can be self-service
Eyesight detection is completed, and is moved easily and gives a test of one's eyesight.
Schematically the present invention and embodiments thereof are described above, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, without creatively designing and the technical scheme
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (9)
1. a kind of visual chart projecting method based on VR technologies, it is characterised in that comprise the following steps：
A) general international eyesight test standard Table storehouse is set up in VR systems, the eyesight in the international eyesight test standard Table storehouse with different detection functions
Table；
B) set up every width visual chart and project to the functional relation D of VR display screen distancesx=F (x), and by visual chart with unreal
The form flash of lamp piece is on VR display screens；
C) projection control expression formula is set up in VR systems, each width visual chart is numbered, visual chart broadcast state is carried out
Mark, visual chart broadcasting speed is controlled；
D) multiple feedback options are set up to user in the multiple-choice question form of Weight for every width visual chart, each feedback option can be anti-
Different degrees of detection granularity should be gone out；
E) detection and analysis algorithm is concluded, the algorithm further does the statistics of Weight according to selection answer of the user in step d
Analysis, finally weighs the comprehensive detection eyesight of user in the form of totally giving a mark；
F) export, preserve examining report.
2. a kind of visual chart projecting method based on VR technologies according to claim 1, it is characterised in that：In step a,
Set up the eyesight Table storehouse for the visual chart that different detection functions are represented with general at present 32 kinds.
3. a kind of visual chart projecting method based on VR technologies according to claim 1, it is characterised in that：In stepb,
User is interacted by limb action or voice with VR systems, VR systems automatically according to user demand adjustment projection away from
From making user see most clearly picture；Before user is detected using visual chart, the shape that VR systems pass through voice or word
Formula plays the detection function of correspondence visual chart.
4. a kind of visual chart projecting method based on VR technologies according to claim 1, it is characterised in that：In step c,
User adjusts the picture size, definition and display format of image by limb action or voice feedback to VR systems, display
Form is divided into that view picture sighting target is shown, single file sighting target is shown, single-row sighting target is shown and single sighting target is shown, the broadcasting of each width visual chart
Speed control is average 0.2 second.
5. a kind of visual chart projecting method based on VR technologies according to claim 1, it is characterised in that：In step d,
Being taken out in the way of multiple-choice question can most reflect that visual chart detects several options of granularity, and each option distributes different weight sizes
Wij, then single visual chart weight use Si=Wij× 100 (wherein：I ∈ [1,32], j ∈ [Isosorbide-5-Nitrae]) realize many granularity Detections.
6. a kind of visual chart projecting method based on VR technologies according to claim 5, it is characterised in that：In step e,
Single answer option is first analyzed, then the weight proportion on demand according to every width visual chart is weighted processing again, according to(wherein：N=32) calculated, finally marking provides comprehensive detection result.
7. a kind of visual chart projecting method based on VR technologies according to claim 1, it is characterised in that：In step f,
Obtain after testing result, be that user sets up tables of data, for subsequent query, contrast vision；The VR network analyses user is of interest
Eyesight content, analyzes the overall vision situation of user, provides the user eyesight nursing suggested design and protection suggestion.
8. a kind of VR spectacle visions table projecting apparatus, it is characterised in that：Regarded including VR glasses and the VR being encapsulated in VR glasses systems
Power table projection software APP, the VR visual chart projection software APP are thrown based on the visual chart described in claim 1 to 7 any one
Image method is developed.
9. a kind of VR spectacle visions table projecting apparatus according to claim 8, it is characterised in that：Described VR visual charts projection
Software APP interconnects networking, and user buys in the application shop of VR glasses, installs the software, you can realize self-service detection.
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| CN108478184A (en) * | 2018-04-26 | 2018-09-04 | 京东方科技集团股份有限公司 | Eyesight measurement method and device, VR equipment based on VR |
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| CN113476010A (en) * | 2021-06-09 | 2021-10-08 | 武汉艾格眼科医院有限公司 | Accurate blind detecting system of look of portable based on VR glasses |
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