CN206209594U - A kind of device of the eyeball tracking method based on multidimensional coordinate - Google Patents
A kind of device of the eyeball tracking method based on multidimensional coordinate Download PDFInfo
- Publication number
- CN206209594U CN206209594U CN201620976691.3U CN201620976691U CN206209594U CN 206209594 U CN206209594 U CN 206209594U CN 201620976691 U CN201620976691 U CN 201620976691U CN 206209594 U CN206209594 U CN 206209594U
- Authority
- CN
- China
- Prior art keywords
- infrared
- reflective spot
- infrared light
- eyeball tracking
- reflective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a kind of device of the eyeball tracking method based on multidimensional coordinate, described device includes eyeball tracking module and mirror cup, the eyeball tracking module includes infrared camera, infrared reflecting part and is arranged on more than 8 infrared light supplies of fixed position, when demarcating, the reflective spot of more than 8 infrared light supplies of the fixed position is all fallen within cornea, and at least 3 reflective spots fall on cornea in use.Described device is applied in wear-type virtual reality or augmented reality equipment, use efficient infrared light supply group, no matter which kind of visual angle of user, effective reflective spot of reasonable quantity can be selected to detect a moving point position on cornea, when user uses wear-type virtual reality or augmented reality equipment, realize whole eye moving point positions or full visual angle of covering user, so that the detection of eye moving point position is smooth when user sweeps, the eye image brightness uniformity of infrared camera capture, successive image treatment is convenient.
Description
Technical field
The utility model is related to Visual Interaction field, more particularly to one kind in wear-type virtual reality/augmented reality equipment
Or the eyeball tracking device based on multidimensional coordinate used in spectacle display device.
Background technology
Wear-type virtual reality device (also known as VR glasses, or the VR helmets) and wear-type augmented reality equipment are (also known as AR
Glasses, or the AR helmets) it is virtual reality that is currently fast-developing and popularizing and augmented reality product.Existing virtual reality and
Lens are all employ in augmented reality equipment, light special efficacy is reflected using it, user is seen head apart from eyes 3-7cm clearly aobvious interior
The built-in Fresnel Lenses of things, such as HTC Vive, built-in mixing Fresnel Lenses of Oculus Rift CV1 etc..
Eyeball tracking is the skill of pan track of the real time record eye movement on screen based on the eyeball characteristic point demarcated
Art.The characteristics of iris recognition technology is the uniqueness based on people's eye iris, extracts iris feature point as calibration point, so as to carry out
Identification and the technology of eyeball tracking.The combination of eyeball tracking and iris recognition technology will be helpful to provide a kind of new people
Machine interactive mode, without relying on mouse, keyboard or game paddle, only need to be by eye movement, operating process is simple, fast
Victory, for virtual reality or augmented reality user, Consumer's Experience will be significantly improved.
In the prior art, wear-type virtual reality or augmented reality equipment are based primarily upon dark pupil technology, and reflective with cornea
Point calculating pupil-corneal reflection vector as a reference point, its eyeball tracking scheme irradiates eyes using infrared light supply, and by red
Outer camera is processed after receiving above-mentioned eye image, and traditional scheme has problems with：
First, infrared light supply negligible amounts, when eyes of user rotation amplitude is larger, pupil deflection is larger, infrared light
The reflective spot in source may be fallen within outside pupil region, it is impossible to captured by infrared camera, cause covering visual angle small, it is impossible to detect certain
A little visual angles.
2nd, infrared light supply negligible amounts or skewness, infrared light supply cannot Uniform Illumination eyes, cause infrared photography
The eye image brightness irregularities of head capture, image quality is poor, influences eyeball tracking data precision.
Utility model content
The utility model provides a kind of eyeball tracking device based on multidimensional coordinate, a kind of efficient infrared by providing
Light source group and corresponding algorithm, no matter which kind of visual angle of user, can be selected on cornea effective reflective spot of reasonable quantity with
Detection eye moving point position, realizes that user is covered using the full visual angle in eye moving point position of wear-type virtual reality or augmented reality equipment
Lid, and the eye image brightness uniformity that infrared camera is captured.
According to implementation method of the present utility model, a kind of eyeball tracking device based on multidimensional coordinate is proposed, its feature exists
In described device includes：
Eyeball tracking module, to carry out eyeball tracking, the eyeball tracking module includes infrared camera, infrared reflecting portion
Part and it is arranged on more than 8 infrared light supplies of fixed position；The infrared camera is arranged at invisible when user uses
On position, to receive the infrared light reflected through infrared reflecting part；
Mirror cup, the mirror cup includes mirror cup support and lens, and the mirror cup support includes bracket base and rack side wall；
When demarcating, the reflective spot of more than 8 infrared light supplies of the fixed position is all fallen within cornea, in use extremely
Rare 3 reflective spots fall on cornea.
Preferably, 8 infrared light supplies are uniformly distributed around lens.
Preferably, 8 infrared light supplies are arranged at the inner or outer side of bracket base.
Preferably, 8 infrared light supplies are arranged on the surface at the edge of the uniform thickness of lens or are embedded in lens
In the edge of uniform thickness.
Preferably, the infrared reflecting part is arranged on the wall of lens carrier side, the angle with lens carrier base plane
It is θ.
Preferably, the angle is θ in the range of 0 °~45 °.
Preferably, described device also includes that thoroughly infrared optical filter can be opaque to visible light but, described thoroughly infrared to be opaque to visible light but
Optical filter is arranged between lens and infrared camera, for covering 8 infrared light supplies, is not seen when being used so as to user
8 infrared light supplies, while the infrared light that infrared light supply is launched can be irradiated to eyes.
Preferably, the infrared camera is arranged at around display screen.
Preferably, described can the infrared optical filter that is opaque to visible light but be thoroughly ring-type or cyclic structure with groove.
Preferably, described can the infrared optical filter that is opaque to visible light but be thoroughly acrylic board material
The utility model has beneficial effect：A kind of eyeball tracking device based on multidimensional coordinate is provided, by providing one
Kind efficient infrared light supply group, no matter which kind of visual angle of eyes of user, more than 3 effective reflective spots can be detected to detect that eye is dynamic
Point position, realizes that user uses the full visual angle in the eye moving point position of wear-type virtual reality or augmented reality equipment to cover, and infrared
The eye image brightness uniformity of camera capture, successive image treatment is convenient.
Brief description of the drawings
Fig. 1 is the demarcation eye image of the eyeball tracking method and step (1) based on multidimensional coordinate.
Fig. 2 a~Fig. 2 h are the eye images of the eyeball tracking method and step (3) based on multidimensional coordinate.
Fig. 3 is the schematic flow sheet of the eyeball tracking method based on multidimensional coordinate.
Fig. 4 is the demarcation eye image schematic diagram of Fig. 1.
Fig. 5 is the schematic diagram of Fig. 2 a.
Fig. 6 is the front view of the eyeball tracking device based on multidimensional coordinate.
Fig. 7 be in Fig. 6 the implementation method of device one along A-A ' profile.
Fig. 8 is infrared light reflection path profile when implementation method is used in Fig. 7.
Fig. 9 be in Fig. 6 the implementation method of device one along A-A ' profile.
Figure 10 is infrared light reflection path profile when implementation method is used in Fig. 9.
Figure 11 be in Fig. 6 the implementation method of device one along A-A ' profile.
Figure 12 is infrared light reflection path profile when implementation method is used in Figure 11.
Specific embodiment
In order to solve the problems of the prior art, inventor has carried out a large amount of related experiments, finds by empty in wear-type
Intend reality and augmented reality dress centers a number of infrared light supply, evenly or unevenly around user's pupil, can be with
Ensureing no matter how eyes of user moves can detect sufficient amount of effective reflective spot on cornea, should such that it is able to basis
Sufficient amount of effective reflective spot carries out real-time eyeball tracking or detection eye moving point position.
It is of the present utility model it is critical that detected on the cornea of eyes of user at least 3 of above-mentioned infrared light supply it is anti-
Luminous point, finally to determine that eyeball tracking is realized in eye moving point position.Its reason is to only detect 1 reflective spot to judge that it is marked
The reference numeral of timing is more difficult, and then cannot calculate a moving point position, that is, do not cover full visual angle when user uses；And
2 reflective spots are only detected also due to its relative position not unique situation of presence with eye, is unfavorable for judging its mark
Regularly corresponding numbering, so as to a moving point position cannot be calculated, that is, does not cover full visual angle when user uses.But 3 anti-
Luminous point, because its triangle for being formed is pointed to uniquely, effectively can be matched with numbering when demarcating.Therefore, wearing
Geometry that the quantity of formula virtual reality or augmented reality equipment mid-infrared light source, the infrared light supply of the quantity are formed and its
Relative position with cornea eye is particularly critical.
Certainly, if the quantity of infrared light supply is enough, under any visual angle of user, can be on eyes of user cornea
3 reflective spots are detected without doubt.But it will be apparent that when point-like infrared light supply is separately provided, increasing without limit
Plus the quantity of infrared light supply, it is larger to increase the energy consumption of headset equipment, volume, causes relatively costly.Therefore, how one is set
Planting can both reduce infrared light supply quantity, under any visual angle of user, 3 reflective spots be may detect that on eyes of user cornea
Device it is then particularly important.
Equally, when detectable reflective spot is more than 4, also due to the relative position of every 3 reflective spots and pupil
Relation uniquely can be realized covering full visual angle；It is that 3 repetitions of reflective spot are applicable, such as, in 4 reflective spots, phase
3 adjacent reflective spots are unique with the relative position relation of pupil, such that it is able to cover full visual angle, then such adjacent 3
Reflective spot has 2 groups.When similarly detectable reflective spot is more than 5, such 3 adjacent reflective spots have 3 groups, successively class
Push away.Certainly, if non-conterminous 3 reflective spots of selection, above-mentioned group of number will be more, can effectively realize that covering is regarded entirely at every group
In the case of angle, the utility model will introduce a kind of minimum that can both cover full visual angle, infrared light supply quantity can be realized again
Change design, certainly, can more than realize covering the technical scheme at full visual angle, without doubt will be due to repetition of the present utility model
It is applicable and realizes, thus is equally included by protection domain of the present utility model.
Thus, inventor is for wear-type virtual reality or the main handling characteristics of augmented reality equipment, i.e. " use state
Under, the display screen and user's head geo-stationary, the display screen and eyes of user geo-stationary or motion ", design one
Plant at least 3 devices and algorithm of reflective spot that can be obtained under any use state on eyes of user cornea, Ke Yitong
3 reflective spots crossed on the cornea carry out accurate eyeball tracking or detection eye moving point position, so as to realize that covering user uses
Whole eye moving point positions (i.e. full visual angle) of wear-type virtual reality or augmented reality equipment.
Thus, the utility model provides a kind of based on a number of infrared light supply of setting, with eyes of user cornea
The reflective spot of the respective numbers of formation, the eyeball tracking scheme so as to have multidimensional coordinate.With reference to Fig. 3, show that this practicality is new
Type is based on the schematic flow sheet of one of the eyeball tracking scheme of multidimensional coordinate implementation method.The eyeball tracking scheme is generally comprised
Following steps：
(1) the demarcation vector of more than 8 dimensions of eyes of user is demarcated；
(2) when using, determining at least 3 measurement vectors of dimension of eyes of user；
(3) the eye moving point position of human eye is determined according to the demarcation vector measurement vector；
When the demarcation vector is that eyes of user faces calibration point on display screen, more than 8 infrared light supplies of fixed position
Each reflective spot on cornea eye points to the vector of pupil center, the calibration point be display screen geometric center position or
Ad-hoc location；The measurement vector is that the reflective spot of at least more than 3 infrared light supplies on cornea eye is pointed under use state
The vector of pupil center；In step (1), reflective spot of more than 8 infrared light supplies on cornea eye is according to clockwise from 12
Point position start, number consecutively be reflective spot one, reflective spot two ... reflective spot eight ...；The eye moving point position is that eyes are seen
Position on display screen.
Below explanation step (1)：
Eyeball tracking device based on multidimensional coordinate, such as wear-type virtual reality device, including eye in the utility model
Ball tracing module, to carry out eyeball tracking, the eyeball tracking module includes the 8 of infrared camera 102, fixed position with last red
Outer light source 106.Possess more than 102,8 infrared light supplies 106 of infrared camera, it can implement all schemes of the present utility model
Step, i.e. the eyeball tracking module are the technical schemes of the bottom line for realizing the utility model scheme.
In the present embodiment, the infrared light supply 106 of fixed position has 8, to demarcate 8 institutes of dimension in step (1)
Demarcation vector is stated, at least 3 measurement vectors of reflective spot of detection in step (2).Wherein, 8 fixed bits of infrared light supply 106
Be equipped with it is various, one of which be by 8 fixed light sources be divided into two groups, 4 fixed positions of each group light source formed two with one heart
Round technical scheme is realized.Certainly, for convenience of implementation, inventor is in the present embodiment using more regular fixed position.
In order to describe conveniently, by the technical scheme of above-mentioned bottom line, i.e., " eyeball tracking module includes infrared inventor
On 8 infrared light supplies 106 of camera 102, fixed position, to carry out eyeball tracking " basis, the present inventor is discussed in detail and grinds
A kind of device of hair, refer to Fig. 1, Fig. 3, Fig. 4, Fig. 6~12.
Wear-type virtual reality device includes mirror cup, and the mirror cup includes lens 105 and lens carrier, such as Fig. 6 and Fig. 7
Shown, lens carrier includes rack side wall 103 and bracket base 104, and lens carrier sets by axial symmetry of the axis of lens 105
Meter or asymmetrical design, are defined by the working portion for fully exposing lens 105, i.e., bracket base 104 takes hollow design, such as circle
Ring or square hole are designed, and 104 while lens 105 are fastened, expose the working portion of lens 105.Wherein, lens 105 are installed
In the inner side of lens carrier base 104；The device is the device in wear-type virtual reality or augmented reality equipment, due to being to wear
Formula equipment, eyes of user 400 is irradiated using 8 infrared light supplies 106 of fixed position, and then the capture of infrared camera 102 8 is red
8 reflective spots of the outer light source 106 on cornea (substantially covering iris 2 and the region of pupil 3)：Reflective spot 1, reflective spot two
12nd, reflective spot 3 13, reflective spot 4 14, reflective spot 5 15, reflective spot 6 16, reflective spot 7 17, reflective spot 8 18, step (1)
Under demarcation and step (2) use state, due to wear-type virtual reality device and 8 of head geo-stationary, i.e. fixed position
Infrared light supply 106 and user's head geo-stationary, so that above-mentioned reflective spot is definitely constant relative to the position of eyes.
In step (1), during demarcation, calibration point is the geometric center position of display screen, and eyes of user faces display screen subscript
During fixed point, the reflective spot of 8 infrared light supplies 106 of fixed position is all fallen within eyeball；Preferably, 8 of fixed position it is infrared
The reflective spot of light source 106 is all fallen within cornea, to demarcate the mark of each reflective spot of whole 8 infrared light supplies 106 on cornea
Determine vector.
It is the demarcation eye image that infrared camera 102 is captured with reference to Fig. 1 and Fig. 4, Fig. 1, Fig. 4 is the schematic diagram of Fig. 1, mark
8 demarcation vectors are by reflective spot 1, reflective spot 2 12, reflective spot 3 13, reflective spot 4 14, reflective spot five in determining vector
15th, reflective spot 6 16, reflective spot 7 17, reflective spot 8 18 point to the vector of pupil center, are followed successively by：Demarcate (the x of vector 110110,
y110), demarcate vector 120 (x120, y120), demarcate vector 130 (x130, y130), demarcate vector 140 (x140, y140), demarcate vector
150(x150, y150), demarcate vector 160 (x160, y160), demarcate vector 170 (x170, y170), demarcate vector 180 (x180, y180)。
It is preferred that the reflective spot of 8 infrared light supplies 106 of fixed position is respectively positioned in an imaginary circles 5, and 8 infrared light supplies 106
It is uniformly distributed in the imaginary circles 5；The concentric distribution approximate with pupil 3 of the imaginary circles 5.Wherein imaginary circles 5 are approximate with pupil 3
Distribution with one heart so that above-mentioned 8 reflective spots during demarcation are uniformly distributed on cornea, so that the visual angle regardless of user
At least 3 reflective spots can be detected in step (2).As long as more particularly, above-mentioned imaginary circles 5 and edge of cornea
(substantially corresponding to the edge of iris 2) as shown in Fig. 2 a~2h, can detect 4 apart from proper on the cornea at full visual angle
~5 reflective spots.
It should be noted that using the geometric center position on display screen as calibration point, its benefit in the present embodiment
It is that CC tangent plane is relative to display screen in almost parallel so that area can be surveyed during demarcation maximum, it is ensured that 8 reflective spots
All fall within cornea and cause the concentric distribution approximate with pupil 3 of the imaginary circles 5.In other embodiments can also be using display
Ad-hoc location or optional position are used as calibration point on screen, and the utility model is without limitation.
Correspondingly, 8 infrared light supplies 106 in positive apparent direction upper measurement around the lens 105 or around the infrared photography
First 102 are uniformly distributed, i.e., the concentric distribution approximate with pupil 3 of described imaginary circles 5, to realize covering whole eyes when user uses
Moving point position (i.e. full visual angle), so that the detection of eye moving point position is smooth when user sweeps, and can equably irradiate eyes, from
And the eye image brightness uniformity that camera 102 is received, it is easier to judge the reflective spot (glint) on cornea eye so that
Subsequent treatment is more prone to.Also so that under step (2) use state, no matter the rotation amplitude of eyes of user 400 has much,
To show at least 3 clear, available reflective spots on cornea, realize that covering user is existing using wear-type virtual reality or enhancing
Whole eye moving point positions (i.e. full visual angle) of real equipment so that the detection of eye moving point position is smooth when user sweeps, so as to realize essence
True eyeball tracking or detection eye moving point position.
In the present embodiment, infrared camera 102 shows in being arranged at the wear-type virtual reality or augmented reality equipment
Around display screen, it is used to receive after the irradiation eyes of user 400 of infrared light supply 106 by the eye image of lens 105.Preferably,
The infrared camera 106 of even number number is relatively arranged on display screen in the wear-type virtual reality or augmented reality equipment two-by-two
Around 200.Inventor's research discovery, sets infrared camera 106, the eye image for photographing around display screen 200
It is not image of looking straight, increases the difficulty of subsequent treatment.
In another embodiment, inventor between lens 105 and display screen 200 by setting an infrared reflecting portion
Part 101, infrared light to reflectance-transmittance lens 105 and by infrared camera 102 be arranged at lens 105 and display screen 200 it
Between can receive the infrared optical position of the reflection, so as to receive eye image, set to receive eyes of user by specific
Image of looking straight, so as to save successive image processing routine, the disposal ability of release device.Carried out specifically below in conjunction with Fig. 7
It is bright：
As shown in fig. 7, eyeball tracking module also includes infrared reflecting part 101, and infrared camera 102 is arranged at use
When family uses on invisible position, so as to the sight line without interference with user, Consumer's Experience is lifted.
It is preferred that infrared reflecting part 101 is arranged on lens carrier side wall 103, with the plane of lens carrier base 104
Angle is θ, and using the infrared reflecting part 101, to reflect infrared light, through visible ray, reflection infrared light can be avoided will be red
Outer camera 102 is arranged at the front of user's sight line, so as to avoid interference user's sight line or visual effect.Infrared camera 102
It is relative with infrared reflecting part 101 on lens carrier side wall 103, do not see the infrared photography when in use with user
First 102 are defined, i.e., infrared camera 102 is arranged at when user uses on invisible position, and infrared camera 102 axis
Line is 90 ° of -2 θ with the angle of the plane of lens carrier base 104, to realize that the reflection infrared light image that camera is received is to use
The image of looking straight at family, to save the disposal ability of subsequent treatment image processing program, release virtual reality or augmented reality equipment.
It is preferred that look straight image of the reflection infrared light image that should be received with infrared camera 102 of angle, θ as user
It is defined, it is preferable that θ is in the range of 0 °~45 °.
It is preferred that above-mentioned θ is 30 °, the correspondingly axis of infrared camera 102 and the plane of lens carrier base 104
Angle is 30 °.
It is preferred that above-mentioned infrared light supply 106 uses infrared LED light source, in order to allow infrared camera 102 to photograph clearly
Eye image, it is preferable that selection wavelength is the infrared LED light source of 940nm.
It should be noted that the type of said lens 105 can have various, if lens 105 can be the plano-convex as shown in Fig. 1
Lens, or biconvex lens symmetrically or non-symmetrically, it is also possible to concave-convex lens, type of the utility model to lens 105
It is not limited.
With reference to Fig. 8, the infrared light reflection path profile of device in Fig. 7 is which illustrated, display screen 200 is virtual reality or enhancing
The display device of real world devices, camera mirror image 300 is mirror image of the infrared camera 102 in infrared reflecting part 101, eyeball
The passage of light of tracking is 8 infrared light supply → 400 → infrared cameras of human eye 102, in figure in camera mirror image 300, lens
The heart, the pupil of human eye 400 are in a straight line.
When in use, 8 infrared light supplies 106 illuminate human eye 400 to human eye 400, and people's eye light shines again by lens 105
It is mapped on the infrared reflecting part 101 before display screen 200, the infrared ray of infrared ray or 940nm wave bands is reflected back, and quilt
The infrared camera 102 for facing infrared reflecting part 101 is captured, and camera captures clearly eyes image, is then delivered to
The computing unit of wear-type virtual reality or augmented reality equipment does image analysis processing.
In addition, working as infrared reflecting part 101 and lens carrier by infrared reflecting part 101, infrared camera 102, lens
105 when being sealed in a closed space, can prevent the entrance of dust, increases the service life of optical element.
Inventor has found that operationally, eyes of user 400 is it can directly be seen that 8 infrared light supplies for the present apparatus under study for action
106, influence user's vision or sight line.Inventor thoroughly infrared can be opaque to visible light but by setting one between lens and camera
Optical filter 107 solves the above problems.Below it is described in detail：
With reference to Fig. 7~12, inventor set in said apparatus one can the infrared optical filter 107 being opaque to visible light but thoroughly, use
In covering or covering 8 infrared light supplies 106, so as to not see 8 infrared light supplies 106 when user uses and can pass through infrared
Light, user's vision or sight line are not influenceed, lift Consumer's Experience.
It is preferred that because 8 infrared light supplies 106 are set uniformly around lens 105, therefore thoroughly infrared can be opaque to visible light but
Optical filter 107 is ring-type or cyclic structure with groove, and above-mentioned groove is used to be completely covered by 8 infrared light supplies.
It is preferred that 8 infrared light supplies 106 are arranged at the inner side of bracket base 104, with reference to Fig. 9~12, bracket base 104 makes
With can thoroughly the infrared optical filter being opaque to visible light but, i.e. bracket base 104 for it is described can the infrared optical filter being opaque to visible light but thoroughly.
In this case, the infrared light of 8 transmittings of infrared light supply 106 can shine directly into infrared camera 102 or directly pass through
Infrared reflecting part 101 reflect after be irradiated to the infrared light supply of infrared camera 102, i.e., 8 106 transmitting infrared light not according to
It is mapped to eyes of user 400, captured by infrared camera 102, causes infrared camera 102 to obtain blank image or flaw figure
Piece, influence is demarcated and measured, therefore, inventor sets one with the shape of the bracket base 104 8 bottoms of infrared light supply 106
Identical, impermeable infrared light covers plate 108, infrared light for blocking the backward launched of infrared light supply 106.Preferably, it is also possible to will
The outside of bracket base 104 can be arranged at by the infrared optical filter 107 being opaque to visible light but thoroughly, bracket base 104 is by permeable to infrared
Material is made, and to pass through infrared light, irradiates eyes of user 400, needs also exist for setting one and institute 8 bottoms of infrared light supply 106
State bracket base 104 or can the infrared shape of optical filter 107 being opaque to visible light but is identical thoroughly, impermeable infrared light cover plate 108.
It is preferred that when 8 infrared light supplies 106 are arranged at 104 inner side of bracket base, in order that apparatus structure is more tight
Gather, with reference to Figure 11~12, inventor have developed a kind of lens 105, and lens 105 have the edge of uniform thickness, 8 infrared lights
Source 106 is arranged on the surface at the edge of the uniform thickness of said lens 105 or is embedded in the uniform thickness of said lens 105
Edge in.
It is of course also possible to 8 infrared light supplies 106 are arranged at into the outside of bracket base 104,8 infrared light supplies 106 are set
In the surface of bracket base 104 of support lens 105,8 infrared light supplies can be arranged at by the infrared optical filter 107 being opaque to visible light but thoroughly
106 outside, so as to not see 8 infrared light supplies 106 when user uses and can pass through infrared light, user's vision is not influenceed
Or sight line, Consumer's Experience is lifted, and bracket base 104 is made up of impervious infrared light supply or completely opaque material, in case
Only the infrared light of 8 transmittings of infrared light supply 106 irradiates backward.
Preferably, it is above-mentioned the infrared optical filter 107 being opaque to visible light but to be made using acrylic board material thoroughly.
It is preferred that all of above carry out step (1) or carry out the device of following step (2) (3) also including computing unit,
Eye image of the computing unit according to captured by infrared camera 102 calculates the position coordinates and/or identification iris of eyes
Feature, and carried out data transmission by wired or wireless mode.
It is preferred that step (1) can also include iris recognition, the i.e. extraction including iris feature or be entered by iris feature
Row identification：Infrared camera 106 shoots the image of eyes of user 400, and device carries out image procossing, and extracting iris feature is carried out
Identity is compared, to judge whether user uses first；If user is to use first, device typing user profile, and record catch
The iris feature for receiving, and the user profile and the iris feature are carried out into corresponding, preservation, what is then had been described adopts
Collection demarcates vector, that is, gather and record and demarcate 8 demarcation vectors that vector includes；If user is non-used first, will extract
Iris feature and iris database compare the collection mark that to recognize identity, then can be according to circumstances had been described again
Determine vector or directly transfer former demarcation vector；
Below explanation step (2), with reference to Fig. 2, Fig. 5：
Selected reflective spot is determined in step (2) first, it is then determined that the numbering of selected reflective spot, then measure selected reflective spot
Measurement vector.
Ideally, it is reflective spot 1, reflective spot 2 12, reflective when using, when the amplitude that rotates of eyes 400 is smaller
Point 3 13, reflective spot 4 14, reflective spot 5 15, reflective spot 6 16, reflective spot 7 17, reflective spot 8 18 all fall within cornea eye
On, as shown in figure 1, i.e. reflective spot bright spot clearly, is easily detected.But when using, the inevitably rotation amplitude of eyes of user 400
Larger, as shown in Fig. 2 a~2h, only part reflective spot falls on cornea；And fall episcleral reflective spot then obscure or not
It can be seen that, cause detection to encounter difficulties, this requires to fall on cornea with a number of reflective spot, to realize effective eyeball
Tracking and the detection of eye moving point position.
Therefore, step (2) it is critical that determine at least 3 clear, visible reflective spots, and be with 3 reflective spots
Selected reflective spot, realizes that user uses the covering whole eye moving point position of wear-type virtual reality or augmented reality equipment (i.e. complete
Visual angle) so that the detection of eye moving point position is smooth when user sweeps, to determine the eye moving point position of user in subsequent step (3).
Therefore, inventor devises 8 infrared light supplies 106 be uniformly distributed around pupil 3 when demarcating, afterwards in step
(2) on cornea can detect at least 3 reflective spots, with realize cover user use when whole eye moving point positions it is (i.e. complete
Visual angle) so that the detection of eye moving point position is smooth when user sweeps, and eyes can be equably irradiated, so that infrared camera
The 102 eye image brightness uniformities for receiving, it is easier to judge the shining point (glint) on cornea eye so that subsequent treatment
It is more prone to.
In the present embodiment, the reflective spot of 8 infrared light supplies 106 of fixed position is respectively positioned on the side of an imaginary circles 5, and institute
8 infrared light supplies 106 are stated to be uniformly distributed on the side of the imaginary circles 5；The concentric distribution approximate with pupil 3 of the imaginary circles 5, from
And, under use state, no matter the rotation amplitude of eyes of user 400 has much, can be shown on cornea at least 3 it is clear, can
Reflective spot, realizes covering whole eye moving point position of the covering user using wear-type virtual reality or augmented reality equipment
(i.e. full visual angle) so that the detection of eye moving point position is smooth when user sweeps, so as to realize that accurate eyeball tracking or detection eye are moved
Point position.
Inventor passes through to study, above-mentioned technical proposal, and no matter the rotation amplitude of eyes of user 400 has much in use,
At least 3 clear, available reflective spots can be shown on cornea, as shown in Fig. 2 a~2h, rotation on eight directions compared with
Under big visual angle, 4~5 reflective spots of infrared light supply can be still distinguished, the calculating eye that how to be determined as described in detail below is moved
3 reflective spots of point position, that is, determine selected reflective spot.
In the present embodiment, selected luminous point is at least 3 corresponding reflective spots of measurement vector of dimension, and selected reflective
Point is continuous at least 3 reflective spots.Then test vector and demarcation vector difference according to selected reflective spot determines user's
Eye moving point position.
It is preferred that in a state of use on selection cornea 3 or 4 reflective spots are selected reflective spot, and measure selected
The measurement vector of reflective spot, the measurement vector is the vector that reflective spot points to pupil center, to realize that covering user uses head
Covering whole eye moving point position (i.e. full visual angle) of formula virtual reality or augmented reality equipment is worn, so that eye when user sweeps
The detection of moving point position is smooth.So as to the measurement vector according to selected reflective spot, it demarcates vector and determines accordingly in step (1)
The eye moving point position of user.
It is preferred that 3 reflective spots on selection cornea are selected reflective spot, realize that covering user is virtually existing using wear-type
Whole eye moving point positions (i.e. full visual angle) of reality or augmented reality equipment, so that the detection of eye moving point position is flat when user sweeps
It is sliding, detect that eye moving point position is accurate, convenient and saves equipment disposal ability using 3 selected reflective spots.
Preferably, less 3 of the absolute growth for measuring vector during above-mentioned selected reflective spot is for reflective spot on cornea is anti-
Luminous point.
Thus it needs to be determined that selecting the numbering of reflective spot, to determine its demarcation vector in step (1).Inventor sets
The method that the geometric properties of the selected reflective spot of several bases judge its reference numeral is counted.
The method of selected reflective spot is determined in the present embodiment is：The sensing at the obtuse angle of the triangle that selected reflective spot is formed is sentenced
Surely the numbering of reflective spot is selected, the approximate surface of sensing at the obtuse angle is 90 ° of directions, then the numbering of the selected reflective spot is suitable
Hour hands are followed successively by reflective spot eight, reflective spot one, reflective spot two；It is 45 ° of directions, the then choosing that the obtuse angle points to approximate upper right side
The numbering for determining reflective spot is followed successively by reflective spot one, reflective spot two, reflective spot three clockwise；It is just right that the obtuse angle points to level of approximation
Side is 0 ° of direction, then the numbering of the selected reflective spot is followed successively by reflective spot two, reflective spot three, reflective spot four clockwise；It is described
It is 315 ° of directions that obtuse angle points to approximate lower right, then the numbering of the selected reflective spot is followed successively by reflective spot three, reflective clockwise
Point four, reflective spot five；It is 270 ° of directions that the obtuse angle is pointed to immediately below approximate, then the numbering of the selected reflective spot clockwise according to
Secondary is reflective spot four, reflective spot five, reflective spot six；It is 225 ° of directions that the obtuse angle points to approximate lower left, then described selected anti-
The numbering of luminous point is followed successively by reflective spot five, reflective spot six, reflective spot seven clockwise；Point to level of approximation front-left in the obtuse angle
180 ° of directions, then the numbering of the selected reflective spot be followed successively by reflective spot six, reflective spot seven, reflective spot eight clockwise；It is described blunt
It is 135 ° of directions that approximate upper left side is pointed at angle, then the numbering of the selected reflective spot is followed successively by reflective spot seven, reflective spot clockwise
8th, reflective spot one；The approximate finger obtuse angle is pointed to consistent with corresponding direction or deviates certain angle, and the certain angle is less than
15°；The obtuse angle sensing is the sensing of obtuse angle center line.
The method that the selected reflective spot numbering of determination in the present embodiment is illustrated with reference to Fig. 5, Fig. 5 is the schematic diagram of Fig. 2 a,
There are 4 clear, effective reflective spots 11,12,17,18 on cornea, its each measurement vector is 111 (x111,y111),121(x121,
y121),171(x171,y171),181(x181,y181), wherein measurement vector the less reflective spot of absolute growth for reflective spot 17,
18 and 11, the obtuse angle of its triangle for being formed is ∠ 17-18-11, the sensing of its center line and the approximate coincidence in 45 ° of upper left side, that is, select
The numbering of reflective spot 17,18 and 11 is followed successively by reflective spot 7 17, reflective spot 8 18 and reflective spot 1 clockwise, according to above-mentioned volume
Number, determine 3 demarcation vector measurement vectors of selected reflective spot：Reflective spot 7 17, reflective spot 8 18 and reflective spot 1
Demarcate vector and be respectively 170 (x170,y170),180(x180,y180), 110 (x110,y110), reflective spot 7 17, the and of reflective spot 8 18
The measurement vector of reflective spot 1 is respectively 171 (x171,y171),181(x181,y181), 111 (x111,y111)。
In another embodiment, the geometric properties according to selected reflective spot judge that the method for its numbering is：
(301) if the horizontal ultimate range of 3 triangles of selected reflective spot formation is more than 2 times of longitudinal ultimate range
More than, straight line connects most left and most right selected reflective spot, and the selected reflective spot in centre is square on this line, then the selected reflective spot
Numbering be followed successively by reflective spot eight, reflective spot one, reflective spot two clockwise；If the selected reflective spot in centre is under the straight line
Side, then the numbering of the selected reflective spot is followed successively by reflective spot four, reflective spot five, reflective spot six clockwise.
(302) if the horizontal ultimate range of 3 triangles of selected reflective spot formation is less than the 1/ of longitudinal ultimate range
2, the selected reflective spot in straight line connection highest and lowest, middle selected reflective spot in the straight line left, then the selected reflective spot
Numbering be followed successively by reflective spot six, reflective spot seven, reflective spot eight clockwise；Middle selected reflective spot in the straight line right,
Then the numbering of the selected reflective spot is followed successively by reflective spot two, reflective spot three, reflective spot four clockwise.
(303) if the horizontal ultimate range of 3 triangles of selected reflective spot formation is less than the phase of longitudinal ultimate range
Deng the selected reflective spot in, straight line connection highest and lowest, middle selected reflective spot is located at the upper right side of the straight line, then described selected
The numbering of reflective spot is followed successively by reflective spot one, reflective spot two, reflective spot three clockwise；The selected reflective spot in centre is located at the straight line
Lower right, then the numbering of the selected reflective spot be followed successively by reflective spot three, reflective spot four, reflective spot five clockwise；Centre is selected
Reflective spot be located at the straight line lower left, then the numbering of the selected reflective spot be followed successively by clockwise reflective spot five, reflective spot six,
Reflective spot seven；Middle selected reflective spot is located at the upper left side of the straight line, then the numbering of the selected reflective spot is clockwise successively
It is reflective spot seven, reflective spot eight, reflective spot one.
The method that the selected reflective spot numbering of the determination in an other embodiment is illustrated with reference to Fig. 5, Fig. 5 is the signal of Fig. 2 a
Figure, there is 4 clear, effective reflective spots 11,12,17,18 on cornea, and its each measurement vector is 111 (x111,y111),121
(x121,y121),171(x171,y171),181(x181,y181), wherein the less reflective spot of absolute growth of measurement vector is reflective
Point 17,18 and 11.Reflective spot 17,18 and 11 is unsatisfactory for step (301) and (302), it is impossible to judge its corresponding numbering；3 choosings
The horizontal ultimate range for determining the triangle of the formation of reflective spot 17,18 and 11 is equal with longitudinal ultimate range, and straight line connection is most gone up
Selected reflective spot 11 and most lower selected reflective spot 17, middle selected reflective spot 18 are located at the upper left side of the straight line, the then choosing
The numbering for determining reflective spot 17,18 and 11 is followed successively by reflective spot 7 17, reflective spot 8 18, reflective spot 1 clockwise.According to above-mentioned
Numbering, determines 3 demarcation vector measurement vectors of selected reflective spot：Reflective spot 7 17, reflective spot 8 18 and reflective spot 1
Demarcation vector be respectively 170 (x170,y170),180(x180,y180), 110 (x110,y110), reflective spot 7 17, reflective spot 8 18
Measurement vector with reflective spot 1 is respectively 171 (x171,y171),181(x181,y181), 111 (x111,y111)。。
The step of reflective spot numbering is selected in the step of reflective spot is selected in above-mentioned determination and determination is applicable Fig. 2 b~2h, is limited to a piece
Width the present inventor repeat no more.
Below explanation step (3), with reference to Fig. 2 a and Fig. 5：
Step (3) measures vector according to the demarcation vector of the selected reflective spot determined in step (2), by being calculated
Eye moving point position.
In the present embodiment, step (3) also includes determination eye dynamic vector, with reference to Fig. 2 a and Fig. 5, during the eye dynamic vector is
Between selected reflective spot be reflective spot 8 18 the (x of measurement vector 181181,y181) and demarcate the (x of vector 180180,y180) difference,
It can also be each measurement vector 171 of 3 selected reflective spots i.e. reflective spot 7 17, reflective spot 8 18, reflective spot 1
(x171,y171),181(x181,y181), 111 (x111,y111) and demarcate the (x of vector 170170,y170),180(x180,y180), 110
(x110,y110) difference average.
Eye dynamic vector is the difference that the corresponding measurement vector of middle selected reflective spot demarcates vector, i.e.,：
181(x181,y181)-180(x180,y180)=(x181-x180,y181-y180)
This dynamic vector (x181-x180,,y181-y180) illustrate eyes of user 400 on a display screen blinkpunkt move when it is red
The relative movement of pupil in the image that outer camera 102 is photographed.
Eye dynamic vector is the weighting of the difference that 3 measurement vectors of selected reflective spot demarcate vector, i.e.,：
a[111(x111,y111)-110(x110,y110)]+b[171(x171,y171)-170(x170,y170)]+c[181(x181,
y181)-180(x180,y180)]=(ax111-ax110+bx171-bx170+cx181-cx180,ay111-ay110+by171-by170+cy181-
cy180), wherein a+b+c=1
This dynamic vector (ax111-ax110+bx171-bx170+cx181-cx180,ay111-ay110+by171-by170+cy181-
cy180) pupil in the image that photographs of infrared camera 102 when illustrating eyes of user 400 blinkpunkt being moved on a display screen
Relative movement.
Wherein can be by adjusting a, b, c value size, the method for increaseing or decreasing certain weight for judging blinkpunkt is come more
To be accurately determined blinkpunkt direction；Before and after can also being in the picture partial to according to pupil select reflective spot position determine a, b,
The value of c, more accurately judges eye moving point position.
It is preferred that a=b=c=1/3, i.e., demarcated according to 3 measurement vectors of selected reflective spot vector difference it is equal
Value determines eye dynamic vector, to be prevented effectively from error, improves the accuracy of eye moving point position.
It is preferred that a=b=1/4, c=1/2, that is, increase the weight of selected reflective spot 8 18, it is preferentially true with reflective spot 8 18
Determine eye moving point position, further improve the accuracy of eye moving point position.
In the present embodiment, above-mentioned eye dynamic vector is corresponded with the eye moving point position on display screen.And then each eye is dynamic
Vector has unique eye moving point position on a display screen.
In another embodiment, according to above-mentioned eye dynamic vector, corresponding pixel value and direction determine on eye image
The eye moving point position of user, i.e., according to eye moving point vector (x181-x180,,y181-y180) or (ax111-ax110+bx171-bx170+
cx181-cx180,ay111-ay110+by171-by170+cy181-cy180) corresponding pixel value and direction determine to use on eye image
The eye moving point position at family.Preferably, it is linear or non-linear according to the pixel value of eye image and the pixel value of display screen
Related relation determines eye moving point position.When the linear relationship can be the steering angle of eyes of user 400 maximum or note
During depending on 200 border of display screen, the pixel value and the pixel value of display screen 200 that pupil 3 is represented in the rotating vector of image are corresponding
Linear relationship.Can also be fitted the pixel value and show that its rotating vector on eye image is represented after human eye curved surface is rotated
The non-linear relation of the pixel value of display screen 200.
The method that Fig. 2 a determine eye moving point position is more than illustrate only, for Fig. 2 b~2h, it is seen that on every image
It is determined that at least 3 clear, available reflective spots, i.e. above method and device are applicable the eye moving point position in detection Fig. 2 b~2h,
I.e. the utility model realizes covering user and uses whole eye moving point positions of wear-type virtual reality or augmented reality equipment (i.e.
Full visual angle covering) so that the detection of eye moving point position is smooth when user sweeps；And then it is at least clear, available according to what is determined
3 reflective spots determine eye moving point position using the method used such as Fig. 2 a and Fig. 5, inventor will not be repeated here.
Certainly, the infrared light supply of the fixed position more than 8, such as 9 infrared light supplies, 12 infrared light supplies or 16 are infrared
Light source is uniformly arranged around eyes of user, and it necessarily may also detect that clearly on the eye image at full visual angle when in use
Reflective spot of the quantity more than 3, such as 4 reflective spots, 6 reflective spots, it can be selected continuously or discontinuously by a kind of method
3 reflective spots after be applicable eyeball tracking scheme of the present utility model and determine eye moving point position.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model is weighing
The protection domain that profit is required is defined.
Claims (10)
1. a kind of device of the eyeball tracking method based on multidimensional coordinate, it is characterised in that described device includes：
Eyeball tracking module, to carry out eyeball tracking, the eyeball tracking module include infrared camera, infrared reflecting part with
And it is arranged on more than 8 infrared light supplies of fixed position；The infrared camera is arranged at invisible position when user uses
On, to receive the infrared light reflected through infrared reflecting part；
Mirror cup, the mirror cup includes mirror cup support and lens, and the mirror cup support includes bracket base and rack side wall；
When demarcating, the reflective spot of more than 8 infrared light supplies of the fixed position is all fallen within cornea, and in use at least 3
Individual reflective spot falls on cornea.
2. the device of the eyeball tracking method based on multidimensional coordinate according to claim 1,8 infrared light supplies enclose
It is uniformly distributed around lens.
3. the device of the eyeball tracking method based on multidimensional coordinate according to claim 1,8 infrared light supplies set
It is placed in the inner or outer side of bracket base.
4. the device of the eyeball tracking method based on multidimensional coordinate according to claim 2,8 infrared light supplies set
Put on the surface at the edge of the uniform thickness of lens or be embedded in the edge of lens uniform thickness.
5. the device of the eyeball tracking method based on multidimensional coordinate according to claim 1, the infrared reflecting part
It is θ with the angle of lens carrier base plane on the wall of lens carrier side.
6. the device of the eyeball tracking method based on multidimensional coordinate according to claim 5, the angle be θ 0 °~
In the range of 45 °.
7. the device of the eyeball tracking method based on multidimensional coordinate according to claim 1, described device also includes can
It is thoroughly infrared to be opaque to visible light but optical filter, it is described can thoroughly it is infrared be opaque to visible light but optical filter be arranged at lens and infrared camera it
Between, for covering 8 infrared light supplies, 8 infrared light supplies are not seen when being used so as to user, while infrared light supply institute
The infrared light of transmitting can be irradiated to eyes.
8. the device of the eyeball tracking method based on multidimensional coordinate according to claim 1, the infrared camera sets
It is placed in around display screen.
9. the device of the eyeball tracking method based on multidimensional coordinate according to claim 7, it is described can be thoroughly infrared impermeable
Visible filter is ring-type or cyclic structure with groove.
10. the device of the eyeball tracking method based on multidimensional coordinate according to claim 7, it is described can be thoroughly infrared impermeable
Visible filter is acrylic board material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620976691.3U CN206209594U (en) | 2016-08-29 | 2016-08-29 | A kind of device of the eyeball tracking method based on multidimensional coordinate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620976691.3U CN206209594U (en) | 2016-08-29 | 2016-08-29 | A kind of device of the eyeball tracking method based on multidimensional coordinate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206209594U true CN206209594U (en) | 2017-05-31 |
Family
ID=58759887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620976691.3U Active CN206209594U (en) | 2016-08-29 | 2016-08-29 | A kind of device of the eyeball tracking method based on multidimensional coordinate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206209594U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107122057A (en) * | 2017-06-06 | 2017-09-01 | 上海青研科技有限公司 | A kind of low-power consumption VR glasses eyeball tracing module |
| CN107970035A (en) * | 2017-12-13 | 2018-05-01 | 上海青研科技有限公司 | A kind of mental health reponse system based on eye movement data |
| CN108776003A (en) * | 2018-06-08 | 2018-11-09 | 歌尔股份有限公司 | A kind of detection method of VR equipment |
| CN111783660A (en) * | 2020-07-01 | 2020-10-16 | 业成科技（成都）有限公司 | Eye movement tracking device and electronic device using same |
| CN113359975A (en) * | 2021-05-19 | 2021-09-07 | 杭州小派智能科技有限公司 | Eye movement interaction technology-based medical care method and system and electronic equipment |
| CN113693548A (en) * | 2021-08-31 | 2021-11-26 | 上海青研科技有限公司 | Head-mounted visual detection and visual training equipment |
-
2016
- 2016-08-29 CN CN201620976691.3U patent/CN206209594U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107122057A (en) * | 2017-06-06 | 2017-09-01 | 上海青研科技有限公司 | A kind of low-power consumption VR glasses eyeball tracing module |
| CN107970035A (en) * | 2017-12-13 | 2018-05-01 | 上海青研科技有限公司 | A kind of mental health reponse system based on eye movement data |
| CN108776003A (en) * | 2018-06-08 | 2018-11-09 | 歌尔股份有限公司 | A kind of detection method of VR equipment |
| CN108776003B (en) * | 2018-06-08 | 2019-10-22 | 歌尔股份有限公司 | A kind of detection method of VR equipment |
| CN111783660A (en) * | 2020-07-01 | 2020-10-16 | 业成科技（成都）有限公司 | Eye movement tracking device and electronic device using same |
| CN111783660B (en) * | 2020-07-01 | 2023-11-10 | 业成科技（成都）有限公司 | Eye movement tracking device and electronic device using same |
| CN113359975A (en) * | 2021-05-19 | 2021-09-07 | 杭州小派智能科技有限公司 | Eye movement interaction technology-based medical care method and system and electronic equipment |
| CN113693548A (en) * | 2021-08-31 | 2021-11-26 | 上海青研科技有限公司 | Head-mounted visual detection and visual training equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106339087B (en) | A kind of eyeball tracking method and device thereof based on multidimensional coordinate | |
| CN206209594U (en) | A kind of device of the eyeball tracking method based on multidimensional coordinate | |
| CN106132284B (en) | The tracking of optics eye movement | |
| CN106022304B (en) | A kind of real-time body's sitting posture situation detection method based on binocular camera | |
| US10416763B2 (en) | Eye tracking and user reaction detection | |
| CN106168853B (en) | A kind of free space wear-type gaze tracking system | |
| JP6308940B2 (en) | System and method for identifying eye tracking scene reference position | |
| EP0603157B1 (en) | Image pickup apparatus | |
| CN107184178A (en) | A kind of hand-held vision drop instrument of intelligent portable and optometry method | |
| US20080049185A1 (en) | Eye location and gaze detection system and method | |
| CN103930015A (en) | Photorefraction ocular screening device and methods | |
| JPS62501889A (en) | iris recognition system | |
| CN110279391B (en) | Eyesight detection algorithm for portable infrared camera | |
| CN105955465A (en) | Desktop portable sight line tracking method and apparatus | |
| US7618143B2 (en) | Pupilometer | |
| CN206505382U (en) | Binocular stereo vision ophthalmogyric device in a kind of VR/AR | |
| CN107890336A (en) | Diopter detecting system based on intelligent handheld device | |
| CN108399001A (en) | Binocular stereo vision eye movement analysis method and device in a kind of VR/AR | |
| CN105581770B (en) | Ophthalmoligic instrument and ophthalmic procedures method | |
| AU2016287284B2 (en) | Purkinje meter and method for automatic evaluation | |
| CN109964230A (en) | Method and apparatus for eyes measurement acquisition | |
| CN105391998A (en) | Automatic detection method and apparatus for resolution of low-light night vision device | |
| CN104586404A (en) | Method and system for identifying posture of fitness and health monitoring | |
| CN101601577B (en) | Electronic diopsimeter with functions of eyeball tracking and refraction compensation | |
| CN103824046B (en) | Adaptive light source human face recognition machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |