CN107174195B - Visual chart projecting method and VR spectacle vision table projector based on VR technology - Google Patents
Visual chart projecting method and VR spectacle vision table projector based on VR technology Download PDFInfo
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- CN107174195B CN107174195B CN201710342636.8A CN201710342636A CN107174195B CN 107174195 B CN107174195 B CN 107174195B CN 201710342636 A CN201710342636 A CN 201710342636A CN 107174195 B CN107174195 B CN 107174195B
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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 technology and VR spectacle vision table projectors, belong to optometry technical field.Visual chart projecting method of the invention, step are as follows: general international eyesight test standard Table storehouse a) is established in VR system；B) it establishes every width visual chart and projects to the functional relation of VR display screen distance, and shown on screen with the form flash of lantern slide to VR；C) each width visual chart is numbered in VR system, visual chart broadcast state and broadcasting speed is marked and is controlled；D) multiple feedback options are established to user in the form of the multiple-choice question of Weight for every width visual chart；E) statistical analysis of Weight is further done in the selection answer according to user in step d, and the comprehensive detection eyesight of user is finally measured in the form totally given a mark；F) it exports, save examining report.Method of the invention is simple and easy, reliable and stable；Visual projector light weight is convenient, it is low in cost, be convenient for carrying.
Description
Technical field
The present invention relates to a kind of visual chart projecting method and visual projectors, are based on VR more specifically to one kind
The visual chart projecting method and VR spectacle vision table projector of technology.
Background technique
Visual projector is a kind of medicine ancillary equipment for being used to examine human eyesight of built-in visual chart.It is will be each
There is kind the visual chart of different detection functions lantern slide is made, and makes optist in optometry detection, passes through remote control control and select
Select a kind of Vission detector that required visual chart projects on specific screen.Visual projector is most common in physical examination
, working, enter a higher school, joining the army etc. requires 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 achieve the purpose that detect 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 it is perfect, disadvantage also compare it is more, it is specific as follows:
1, need the auxiliary of optist, optist controlled by the conversational feedback with detected person eyesight projection away from
Selection from, visual chart is shown, improves testing cost.
2, a visual projector needs projector, the display composition such as equipment and remote controler, and cost of manufacture is somewhat expensive.
And weight, generally in 5kg or so, clumsy, unsuitable movement gives a test of one's eyesight.
3, eyesight detection demand is big, and almost everyone more or less contacted, but conventional eye chart projector interconnects
Networking is poor, it has not been convenient to self-service completion detects optometry, can not intelligence be patient's recommendation care regimen etc..
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome conventional eye chart projector above shortcomings, provide a kind of based on VR technology
Visual chart projecting method and VR spectacle vision table projector eyesight established using VR technology using technical solution of the present invention
Table projects scene, and utilizes data analysis technique, by the testing result of multiple groups visual chart by weight adjustment analysis, and weights and beats
Point, more scientifically reflect the detection case of user, method is simple and easy, reliable and stable, does not need the assistance of optist, saves
Testing cost is saved, care regimen and eye protection suggestion intelligently can be provided according to the testing result of user；VR spectacle vision
Table projector directly by the screen display function of VR glasses, eliminates entity display, projector and remote controller, operation letter
It is single, flexible and convenient, light weight is convenient, be convenient for carrying, it is low in cost and can self-service completions eyesight detect.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of visual chart projecting method based on VR technology of the invention, comprising the following steps:
A) general international eyesight test standard Table storehouse is established in VR system, with different detection functions in the international eyesight test standard Table storehouse
Visual chart；
B) it establishes every width visual chart and projects to the functional relation D of VR display screen distancex=F (x), and by visual chart
It is shown on screen with the form flash of lantern slide to VR；
C) projection control expression formula is established in VR system, and 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 established to user in the form of the multiple-choice question of Weight for every width visual chart
Different degrees of detection granularity can be reflected；
E) it concludes and tests and analyzes algorithm, which further does Weight according to selection answer of the user in step d
Statistical analysis, measures the comprehensive detection eyesight of user finally in the form totally given a mark；
F) it exports, save examining report.
Further, in step a, the visual chart that there are general at present 32 kinds to represent different detection functions is established
Eyesight Table storehouse.
Further, in stepb, user is interacted by limb action or voice with VR system, and VR system is certainly
The dynamic demand according to user adjusts projector distance, and user is made to see clearest picture；It is examined in user using visual chart
Before survey, VR system plays the detection function of corresponding visual chart by way of voice or text.
Further, in step c, user adjusts the picture of image by limb action or voice feedback to VR system
Face size, clarity and display format, display format be divided into that whole picture sighting target is shown, uniline 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 0.2 second average.
Further, in step d, the several of visual chart detection granularity can most be reflected by being taken out in a manner of multiple-choice question
Option, each option distribute different weight size Wij, then single visual chart weight uses Si=Wij× 100 (wherein: i ∈ [1,
32], j ∈ [Isosorbide-5-Nitrae]) realize more granularity Detections.
Further, in step e, single answer option is first analyzed, then the power according to every width visual chart as needed
Weight ratio is weighted processing again, according to(wherein: n=32) is calculated, and finally marking provides comprehensive
Close testing result.
Further, in step f, after obtaining testing result, tables of data is established for user, for subsequent query, comparison
Eyesight；VR network analysis user eyesight content of interest, analyzes the overall vision situation of user, provides eyesight shield for user
It manages suggested design and protection is suggested.
A kind of VR spectacle vision table projector of the invention, including VR glasses and the VR eyesight being encapsulated in VR glasses system
Table projection software APP, the VR visual chart projection software APP is based on above-mentioned visual chart projecting method development.
Further, the VR visual chart projection software APP interconnects networking, and user purchases in the application shop of VR glasses
It buys, the software is installed, self-service detection can be realized.
3. beneficial effect
Using technical solution provided by the invention, compared with existing well-known technique, there is following remarkable result:
(1) a kind of visual chart projecting method and VR spectacle vision table projector based on VR technology of the invention utilizes
VR technology establishes visual chart projection scene, and utilizes data analysis technique, and the testing result of multiple groups visual chart is adjusted by weight
Analysis, and marking is weighted, more scientifically reflect the detection case of user, method is simple and easy, reliable and stable, does not need 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 table projector directly removes compared with conventional eye chart projector by the screen display function of VR glasses
Entity display, projector and remote controller, it is easy to operate, flexible and convenient, light weight is convenient, be convenient for carrying, low in cost and energy
Enough self-service completion eyesight detections；
(2) a kind of visual chart projecting method and VR spectacle vision table projector based on VR technology of the invention, Yong Hutong
It crosses limb action or voice to interact with VR system, compared with conventional eye chart projector, does not need the assistance of optist, from
It helps and gives a test of one's eyesight, and not by external environmental interference, such as illumination, temperature interference, it is reliable and stable, provide a kind of good inspection
Survey environment and experience；Also, before user is detected using visual chart, VR system is played pair by way of voice or text
The detection function for answering visual chart allows user clearly to understand the item and effect for needing to detect；
(3) a kind of VR spectacle vision table projector of the invention, is packaged into VR application shop for VR visual chart control system
In a APP, it is mounted on after VR glasses by user, it can be achieved that self-service detection and eye protection etc., light weight is convenient, uses base
In VR glasses as detection infrastructure, conventional vision projector production method is overturned, fuselage light weight is moved easily detection view
Power etc..
Detailed description of the invention
Fig. 1 is a kind of system flow chart of visual chart projecting method based on VR technology of the invention；
Fig. 2 is the schematic illustration of the visual chart projection software APP of VR spectacle vision table projector of the invention a kind of；
Fig. 3 is in the present invention for detecting the partial vision table of human eyesight；
Fig. 4 is a kind of eyesight scoring computational algorithm figure of visual chart projecting method based on VR technology of the invention.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached 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 technology of the invention, as shown in Figure 1, this
VR glasses, are switched on by a kind of visual chart projecting method based on VR technology of invention first, will enter after completing system initialization
Initial display interface, after opening VR visual chart projection software, projection control system reads from international eyesight test standard Table storehouse and projects view
Power table is to VR display.After projector, the visual chart that VR control system can be selected according to user passes through voice or text
Simple detection function introduction is carried out, to allow user to know to be detected part.When user clearly cannot see projection clearly, need
Notify VR that system is adjusted by modes such as voice, touch-controls, and fed back in the detection process and select vision assessment etc.
Grade.At this point, VR projection control system can analyze the testing result of user, by the weight different to different visual charts, using adding
The mode of marking is weighed to assess the overall vision of user, naturally it is also possible to which analysis and assessment are carried out to single visual chart.Finally, output
Examining report informs the place that user needs to pay attention to, and provides protectiving scheme and suggestion.Contrast vision is facilitated to change in order to subsequent
Situation can also establish database for each user to store testing result.
Fig. 2 is the schematic illustration of the visual chart projection software APP of VR spectacle vision table projector of the invention a kind of, by
Shown in Fig. 2, the inspection software of VR spectacle vision table projector mainly includes user terminal, hardware components and software section, Hardware Subdivision
VR- camera lens, TFT- display, 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 and shows
Show program input subsystem etc., for carrying out clarity adjustment according to user's input feedback；User terminal mainly pass through human eye, hand,
Mouth and ear carry out visual chart image definition seen in Real-time Feedback, 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 be downloaded, install VR spectacle vision table projector can be obtained.
The present invention will be further described with reference to the examples below.
Embodiment
As shown in connection with fig. 1, a kind of visual chart projecting method based on VR technology of the present embodiment, comprising the following steps:
A) VR software technology, such as Unity developing instrument are used, using Image Reconstruction Technology, is established in VR system logical
International eyesight test standard Table storehouse, with the visual chart of different detection functions in the international eyesight test standard Table storehouse；Since every kind of visual chart represents
Detection function it is different, some focus on eyesights detection, some focus on colour blindness anomalous trichromatisms detection etc., so by establishing these views
Power table could comprehensively detect, assess the vision condition of user, it is preferable that in step a, establish with general at present
The eyesight Table storehouse of 32 kinds of visual charts for representing different detection functions, 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 of different pattern, in single visual chart again can according to the direction of pattern,
Shape detects different eye eyesights, wherein can detecte whether to have astigmatism there are also some visual charts, if there is colour blindness anomalous trichromatism
The eyesight Table storehouse of conventional eye chart projector offer is referred to Deng, details, details are not described herein.User passes through limb action or language
Sound is interacted with VR system, and the visual chart of different function is projected on virtual high definition screen, and it is aobvious not need additional entity
Show device；For the display screen of visual chart, by providing user in VR system with highest resolution, minimum external interference
Best picture impression so that drop shadow effect is more preferable than traditional.
B) distance presented when detecting due to every width visual chart may be different, it is therefore desirable to establish every width visual chart with
Project to the functional relation D that VR shows screen distancex=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 the detection process, user is dynamic by limbs
Make or voice is interacted with VR system, VR system automatically adjusts projector distance according to the demand of user, sees that user most
Clearly picture, specifically, user adjust the position of image by the input feedback of the appearances body such as hand, mouth, adjust the clear of image
Clear degree, VR system are identified, analyzed and are handled the information of user's input, and continually entering and feed back according to user, pressed
It is adjusted the image definition being output on VR display according to visual chart projection control algolithm, therefore, there is no need to optist's
It participates in, VR optical projection system can realize control automatically, save testing cost.Before user is detected using visual chart, VR system
The detection function that corresponding visual chart is played by way of voice or text, allow user clearly understand the item for needing to detect and
Effect.
C) projection control expression formula is established in VR system, and each width visual chart is numbered, to visual chart broadcast state
It is marked, visual chart broadcasting speed is controlled；User adjusts figure to VR system by limb action or voice feedback
Picture size, clarity and display format of picture etc., display format can be divided into that whole picture sighting target is shown, uniline sighting target shows, is single-row
Sighting target is shown and single sighting target is shown, the broadcasting speed control of each width visual chart is 0.2 second average.
D) multiple feedback options, each feedback option are established to user in the form of the multiple-choice question 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 in advance by the estimation items of weight setting
To carry out, the several options that can most reflect visual chart detection granularity are taken out in a manner of multiple-choice question, each option distribution is different
Weight size Wij, then single visual chart weight uses Si=Wij× 100 (wherein: i ∈ [1,32], j ∈ [Isosorbide-5-Nitrae]) realized more
Degree detection.
E) it concludes and tests and analyzes algorithm, which further does Weight according to selection answer of the user in step d
Statistical analysis, measures the comprehensive detection eyesight of user finally in the form totally given a mark；Specifically thrown using following visual chart
Shadow instrument assessment marking calculation method carries out comprehensive score: first analyzing single answer option, (i.e. single visual chart assessment individual event obtains
Point), the then weight W according to every width visual chart as needediRatio is weighted processing again, according to(its
In: it n=32) is calculated, finally marking provides comprehensive detection result.Comprehensive score sample, table are briefly introduced in conjunction with Fig. 4
In include three columns, the weight on upper column indicates the corresponding score value of each option in single visual chart, and different options has different
The result of sample；The label of the serial number expression visual chart of intermediate hurdles, the visual chart for being projected out required type that can be convenient by label,
Also program is facilitated to carry out by weight calculation；The weight on lower column indicates each visual chart weight shared in 32 kinds of visual charts in total
Than.Assuming that WijWeighted value shared by j-th of option of i-th of visual chart is indicated, if each eyesight form item overall score is 100
Point, then the corresponding scoring of this is:
Si=Wij× 100 (wherein: i ∈ [1,32], j ∈ [Isosorbide-5-Nitrae]),
Assuming that WiThe weight ratio that the i-th width visual chart accounts in all visual charts is indicated, then last comprehensive score are as follows:
(wherein: n=32),
Last calculation formula are as follows:
(wherein: i ∈ [1,32], j ∈ [Isosorbide-5-Nitrae], n=32).
F) it exports, save examining report, after obtaining testing result, establish tables of data for user, regarded for subsequent query, comparison
Power；VR network analysis user eyesight content of interest, analyzes the overall vision situation of user, provides eyesight nursing for user
Suggested design and protection are suggested.For example, projection control system can exist according to user in tracking, when recording the feedback information of user
Details in use process can then select the visual chart for example, user needs to detect protanopia anerythrochloropsia；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 projection control system can analyze user eyesight content of interest, point
The overall vision situation etc. for analysing user, can finally provide Eye Care suggested design and protection is suggested.
VR glasses are the typical VR equipment using VR technology, and the following VR glasses may generally make as present mobile phone
With so the visual chart projecting method of the invention based on VR technology has more extensive use.Referring to figs. 1 and 2,
A kind of VR spectacle vision table projector of the present embodiment, including VR glasses and the VR visual chart being encapsulated in VR glasses system projection
Software APP, the VR visual chart projection software APP is based on above-mentioned visual chart projecting method development, to be using VR glasses
Quick, simply, easily self-service eyesight detection can be achieved.VR visual chart projection software APP interconnects networking, and user is in VR glasses
The software is installed in application shop purchase, and self-service detection can be realized.The visual chart projecting method based on VR technology of the present embodiment
And VR spectacle vision table projector, and it is traditional different using projector, display and the method for remote control, it takes full advantage of newest
VR technology, as long as and buying in VR application shop, installing visual projector APP so user has purchased VR glasses, just
Self-service detection eye eyesight may be implemented, using simple, conveniently.
A kind of visual chart projecting method and VR spectacle vision table projector based on VR technology of the invention, utilizes VR technology
Visual chart projection scene is established, and utilizes data analysis technique, by the testing result of multiple groups visual chart by weight adjustment analysis, and
Weighting marking, more scientifically reflects the detection case of user, method is simple and easy, reliable and stable, does not need optist's
It assists, saves testing cost；It finally will test result and clearly inform user, eye protection suggestion is provided.Made using VR glasses
To detect infrastructure, using the relevant technologies such as newest VR technology, internet+and visual chart projections, create a kind of completely new
VR visual projector, overturned conventional vision projector production method and eliminated reality compared with conventional eye chart projector
Body display, projector and remote controller, it is easy to operate, flexible and convenient, light weight is convenient, be convenient for carrying, be low in 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, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, without creatively designing and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (6)
1. a kind of VR spectacle vision table projector, it is characterised in that: including VR glasses and the VR being encapsulated in VR glasses system view
Power table projection software APP, the VR visual chart projection software APP are based on following visual chart projecting method development:
A) general international eyesight test standard Table storehouse is established in VR glasses system, with different detection functions in the international eyesight test standard Table storehouse
Visual chart；
B) it establishes every width visual chart and projects to the functional relation D of VR display screen distancex=F (x), and by visual chart with unreal
The form flash of lamp piece is shown on screen to VR；
C) projection control expression formula is established in VR glasses system, and each width visual chart is numbered, to visual chart broadcast state
It is marked, visual chart broadcasting speed is controlled；
D) multiple feedback options are established to user in the form of the multiple-choice question of Weight for every width visual chart, each feedback option can be anti-
Different degrees of detection granularity should be gone out；The detection mode of every width visual chart using being carried out in advance by the estimation items of weight setting,
The several options that can most reflect visual chart detection granularity are taken out in a manner of multiple-choice question, each option distributes different weight sizes
Wij, then single visual chart weight uses Si=Wij× 100 realize more granularity Detections, in which: i ∈ [1,32], j ∈ [Isosorbide-5-Nitrae]；
E) it concludes and tests and analyzes algorithm, which further does the statistics of Weight according to selection answer of the user in step d
Analysis, measures the comprehensive detection eyesight of user finally in the form totally given a mark；Specifically use following visual projector
Assessment marking calculation method carries out comprehensive score: first analyzing single answer option, then the power according to every width visual chart as needed
Weight ratio is weighted processing again, according toIt is calculated, in which: n=32, finally marking provides synthesis
Testing result；
F) it exports, save examining report.
2. a kind of VR spectacle vision table projector according to claim 1, it is characterised in that: in step a, foundation has
General at present 32 kinds represent the eyesight Table storehouse of the visual chart of different detection functions.
3. a kind of VR spectacle vision table projector according to claim 1, it is characterised in that: in stepb, user passes through
Limb action or voice are interacted with VR glasses system, VR glasses system automatically according to user demand adjustment projection away from
From making user see clearest picture；Before user is detected using visual chart, VR glasses system passes through voice or text
Form play the detection function of corresponding visual chart.
4. a kind of VR spectacle vision table projector according to claim 1, it is characterised in that: in step c, user passes through
Limb action or voice feedback adjust the picture size, clarity and display format of image, display format to VR glasses system
It is divided into that whole picture sighting target is shown and the uniline sighting target of each width visual chart is shown, single-row sighting target is shown and single sighting target is shown, each width
The broadcasting speed control that image frame is shown is 0.2 second average.
5. a kind of VR spectacle vision table projector according to claim 1, it is characterised in that: in step f, detected
As a result after, tables of data is established for user, for subsequent query, contrast vision；VR glasses system analyzes user eyesight of interest
Content analyzes the overall vision situation of user, provides eyesight for user and nurses suggested design and protection suggestion.
6. according to claim 1 to a kind of VR spectacle vision table projector described in 5 any one, it is characterised in that: described
VR visual chart projection software APP interconnect networking, user VR glasses application shop purchase, the software is installed, can be realized from
Help 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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| CN109497931A (en) * | 2018-12-28 | 2019-03-22 | 杭州精飞光学仪器制造有限公司 | A kind of eyesight measurement method, information control center equipment and computer storage medium |
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| CN113456014B (en) * | 2021-06-10 | 2023-04-28 | 中国人民解放军中部战区总医院 | Dual-contrast vision accurate detection system based on VR glasses |
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| CN110200583A (en) * | 2019-06-06 | 2019-09-06 | 深圳市云蚂蚁科技有限责任公司 | A kind of vision inspection system and method based on VR glasses |
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