CN106782385B - A kind of light-dimming method and its device for wearing display equipment - Google Patents
A kind of light-dimming method and its device for wearing display equipment Download PDFInfo
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- CN106782385B CN106782385B CN201611252104.7A CN201611252104A CN106782385B CN 106782385 B CN106782385 B CN 106782385B CN 201611252104 A CN201611252104 A CN 201611252104A CN 106782385 B CN106782385 B CN 106782385B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention discloses a kind of light-dimming methods and its device for wearing display equipment, wherein the light-dimming method for wearing display equipment includes: the first image of acquisition；Read brightness value and the time for exposure of each pixel of the first image；The first brightness value and the second brightness value of the first image are calculated using brightness value and time for exposure as parameter；The ratio between first brightness value and the second brightness value are used as the first parameter；If the first parameter is higher than the first preset value, the light transmittance of liquid crystal display corresponding region is reduced.The parameters such as present invention acquisition image and brightness value and the time for exposure of reading its each pixel, by calculating the light transmittance that judges whether to need to adjust the light transmittance of liquid crystal display and control liquid crystal display and adjust liquid crystal display in Rule of judgment achievement, so the case where light variation the order display content of display can also be can be clearly seen that by user.Therefore, the present invention realizes the purpose for actively adjusting under different lightness environment and wearing display equipment display effect.
Description
Technical field
The present invention relates to optics display fields, more particularly to a kind of light-dimming method and its device for wearing display equipment.
Background technique
In recent years, virtual reality and augmented reality field development speed were exceedingly fast, and had had many Related products to enter common
Consumer field.Currently, there are many head-mounted display apparatus of correlation type to enter market.These show equipment often basis
The demand of user shows some electronic data or image.For example, AR(augmented reality) intelligent glasses are widely used in movement, drive
Sail, be broadcast live etc..In general these activities all inevitably carry out outdoors, but outdoor light source is to change at any time
's.Such as in driving procedure, the light such as process of passing through tunnel or change in weather can be encountered and change obvious situation.And it is existing
Intelligent head-mounted display apparatus single can only generally be shown with constant brightness.Light is changed significantly, but display system
In the case that brightness does not change correspondingly, user can be difficult to see specific display content.
Therefore, how to allow this kind of intelligent head-mounted display apparatus can be clear under the outdoor environment that brightness changes at any time
Current Content is shown clearly, is urgent problem.
Summary of the invention
The object of the present invention is to provide the light-dimming methods and its device of wearing display equipment, wherein wears display equipment
Light-dimming method, comprising:
Acquire the first image；
Read brightness value and the time for exposure of each pixel of the first image；
The first brightness value and second of the first image is calculated using the brightness value and the time for exposure as parameter
Brightness value；
Wherein first brightness value is the brightness value of each pixel, and second brightness value is each pixel
Average brightness value；
The ratio between first brightness value and second brightness value are used as the first parameter；
If first parameter is higher than the first preset value, the light transmittance of liquid crystal display corresponding region is reduced.
Preferably, further includes: if second brightness value is greater than the second preset value, reduce the whole saturating of the liquid crystal display
Luminosity.
Preferably, further includes: the luminance information for the second image that display equipment is shown is worn described in reading；
Calculate the second parameter of second image；
Wherein, the luminance information of second image includes the brightness value of each pixel of second image, described
The time for exposure of two images；
Second parameter is that the pixel of the brightness value and second image of each pixel of second image is lighted
Spend the ratio between average value；
If second parameter is higher than first preset value, according to the luminance information of second image and described the
Two parameters calculate the first light transmittance of the liquid crystal display；
The light transmittance of the liquid crystal display corresponding region is reduced to first light transmittance.
Preferably, further includes: if the pixel average brightness of second image is greater than second preset value,
Then reduce the integral light-transmitting degree of the liquid crystal display.
The present invention also provides a kind of dimming devices for wearing display equipment, comprising:
Image acquisition units acquire the first image；
First data-reading unit reads brightness value and the time for exposure of each pixel of the first image；
First computing unit calculates the first of the first image using the brightness value and the time for exposure as parameter
Brightness value and the second brightness value；
Wherein first brightness value is the brightness value of each pixel, and second brightness value is each pixel
Average brightness value；
The ratio between first brightness value and second brightness value are used as the first parameter；
First control unit reduces the light transmission of liquid crystal display corresponding region if first parameter is higher than the first preset value
Degree.
Preferably, further includes: the second control unit, if second brightness value be greater than the second preset value, reduce described in
The integral light-transmitting degree of liquid crystal display.
Preferably, further includes: the second data-reading unit wears the bright of the second image that display equipment is shown described in reading
Spend information；
Second computing unit calculates the second parameter of second image；
Wherein, the luminance information of second image includes the brightness value and described of each pixel of second image
The time for exposure of two images；
Second parameter is that the pixel of the brightness value and second image of each pixel of second image is lighted
Spend the ratio between average value；
Third control unit, if second parameter is higher than first preset value, according to the bright of second image
Degree information and second parameter calculate the first light transmittance of the liquid crystal display, and the light transmittance of the liquid crystal display corresponding region is dropped
Down to first light transmittance.
Preferably, further includes: the 4th control unit, if the pixel average brightness of second image is greater than institute
The second preset value is stated, then reduces the integral light-transmitting degree of the liquid crystal display.
Therefore, the invention has the following beneficial effects: the present invention acquisition image and read its each pixel brightness value and
The parameters such as time for exposure by calculate judge whether to need to adjust the light transmittance of liquid crystal display and control liquid crystal display Rule of judgment at
With regard to when adjust the light transmittance of liquid crystal display, and then ordering the display content of display in the case where light variation also can be clear by user
See clearly.Therefore, the present invention realizes the purpose for actively adjusting under different lightness environment and wearing display equipment display effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of flow chart of light-dimming method for wearing display equipment provided by the invention；
Fig. 2 is the flow chart for the light-dimming method that another kind provided by the invention wears display equipment；
Fig. 3 is a kind of structural schematic diagram of dimming device for wearing display equipment provided by the invention.
Specific embodiment
Core of the invention is to provide a kind of light-dimming method and its device for wearing display equipment.
Scheme in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
The present invention is described in further detail for formula.
Detail is elaborated in the following description to fully understand the present invention.But the present invention can with it is a variety of not
Other way described herein is same as to implement, those skilled in the art can do without prejudice to intension of the invention
It is similar to promote.Therefore the present invention is not limited by the specific embodiments disclosed below.
In the technical solution of the light-dimming method provided by the invention for wearing display equipment, referring to Fig. 1, which includes
Following steps:
S101, the first image of acquisition.
In general, user may be outdoors using the scene for wearing display equipment.Such as certain fans that ride are riding
It will use intelligent glasses in capable process and carry out real-time navigation or shooting photo etc..But general illumination is stronger when outdoor sports,
These wear content shown by display equipment as illumination is too strong and user is made not see Chu.Therefore, for clear family
Outer light conditions acquire current real scene image in the present invention first, that is, acquire the first image.
S102, the brightness value for reading each pixel of the first image and time for exposure.
Herein, the first image collected is completed by digital camera, therefore, includes in collected first image
There is a certain amount of digital information, just includes the data of each pixel of first image among these.It is converted by formula, it can
To obtain the brightness value and exposure time information of each pixel.Specifically, each pixel has R, G, B(red, green, blue)
Three primary colors coloured light value.They can be H, S, I value under HSI model, i.e. tone (Hue), saturation degree through known formula scales
(Saturation), brightness (Intensity) value.
And the time for exposure is then recorded by the camera for carrying out the first Image Acquisition, does not need separately to acquire.
S103, the first brightness value that the first image is calculated using the brightness value and the time for exposure as parameter and
Second brightness value.
Wherein, the first brightness value refers to that the brightness value of each pixel in the first image, the second brightness value are that the first image is each
The average brightness value of pixel.
Specifically, the algorithm of the first brightness value M is by formula, (A is system related coefficient, and L is practical bright
Angle value, T are the time for exposure) obtain pixel brightness value I.The first brightness value M is obtained by formula M=I/T again.
Meanwhile the second brightness value M is obtained according to the algorithm of average?, and by the first brightness value M and described second bright
Angle value M?The ratio between be used as the first parameter, be denoted as K.
If S104, first parameter are higher than the first preset value, the light transmittance of liquid crystal display corresponding region is reduced.
Herein, the first preset value is pre-stored standard value, can be adopted in advance by carrying out image to standard sources
Collect and be calculated, no longer repeats herein.
It should be noted that the liquid crystal display refers to the liquid crystal display for being added to and wearing display equipment in the present invention.Liquid
Crystalline substance screen is connect with display equipment is worn, and is placed in the outside for wearing display device display, is covered the region at the moment of user.
Wherein, the specific working principle of liquid crystal display is: when the first parameter is higher than the first preset value, by liquid crystal display corresponding region
The voltage of part upper and lower base plate increases, and changes the polarization state of liquid crystal display liquid crystal layer.When the polarization state and polarization layer of liquid crystal layer
Polarization state it is inconsistent, the light transmittance of liquid crystal display can correspondingly change.Specifically, the electricity in liquid crystal display upper and lower base plate is loaded
Pressure increases, and the light transmittance of liquid crystal display reduces；Conversely, voltage reduces, the light transmittance of liquid crystal display increases.
The parameters such as present invention acquisition image and brightness value and the time for exposure of reading its each pixel are judged by calculating
The no light transmittance for needing to adjust liquid crystal display simultaneously controls the light transmittance that liquid crystal display adjusts liquid crystal display in Rule of judgment achievement, Jin Er
The order display content of display of the case where light changes can also be can be clearly seen that by user.Therefore, the present invention realizes
The purpose for wearing display equipment display effect is actively adjusted under different lightness environment.
In the technical solution of the light-dimming method provided by the invention for wearing display equipment, which includes following step
It is rapid:
Acquire the first image.
Read brightness value and the time for exposure of each pixel of the first image.
The first brightness value and second of the first image is calculated using the brightness value and the time for exposure as parameter
Brightness value.Specifically, first brightness value is the brightness value of each pixel, second brightness value is each pixel
The average brightness value of point.The ratio between first brightness value and second brightness value are used as the first parameter.
If first parameter is higher than the first preset value, the light transmittance of liquid crystal display corresponding region is reduced.
All data meaning with reference to the foregoing embodiments, the first parameter are using single pixel point data as foundation, it is known that
Under this step, show that the brightness of certain partial pixel point region is excessively high, thus can be by reducing the liquid crystal of the corresponding region
The light transmittance of screen carries out shading to the head-mounted display part.There is part to targetedly change light-proofness in this way, so that wearing aobvious
Show that content overall brightness shown by device keeps appropriateness, ensures the clear display of head-mounted display.
If second brightness value is greater than the second preset value, the integral light-transmitting degree of the liquid crystal display is reduced.
In the case, illustrate that external environment overall brightness is excessively high, thus to adjust the whole obscurity of liquid crystal display, to whole
The display portion for wearing display equipment carries out whole shading.
Herein, the second preset value is also the brightness value of a standard, similar with the first above-mentioned preset value setting method,
Details are not described herein again.
On the basis of the above embodiments, further comprising the steps of in further embodiment referring to fig. 2:
The luminance information for the second image that display equipment is shown is worn described in S201, reading.
Under actual scene, true ambient image can not only be shown by wearing display equipment, can be also superimposed in outdoor scene aobvious
Show some virtual images, such as the indicator head etc. shown when navigation.Since virtual image does not need in addition to obtain, and before process
Example is stated, the luminance information of image has also been acquired, thus the luminance information of this kind of image can be read directly.Wherein, institute
When the luminance information for stating the second image includes the exposure of the brightness value of each pixel of second image, second image
Between.
S202, the second parameter for calculating second image.
Specifically, second parameter is the brightness value of each pixel of second image and the picture of second image
The ratio between vegetarian refreshments average brightness.Wherein the Computing Principle of a pixel brightness value and each pixel average brightness please refers to aforementioned
The explanation of embodiment, details are not described herein again.
If S203, second parameter are higher than first preset value, according to the luminance information of second image and
Second parameter calculates the first light transmittance of the liquid crystal display.
Herein, the first preset value is pre-stored standard value, can be in advance by standard light with precedent
Source carries out Image Acquisition and is calculated.
Specifically calculate the formula of the first light transmittance are as follows:, wherein P is the first light transmittance, and P0 is integral light-transmitting degree, K the
Two parameters, A are in the second image, and virtual image highlights degree.
Certainly, in the present invention, the degree that highlights of the second image is to preset.
S204, the light transmittance of the liquid crystal display corresponding region is reduced to first light transmittance.
Specifically, it wears display equipment not only to need to show outdoor scene information, also to be shown on the basis of outdoor scene sometimes
Virtual information.Therefore, the present embodiment it is aforementioned its light luminance information analysis is carried out to the first image on the basis of, will also be to aobvious
Show that the virtual information that equipment itself shows carries out relevant Luminance Analysis, to ensure in the case that outdoor scene and virtual information are superimposed still
It is clear so to show.
For example, background is outdoor scene information, and wears display equipment and exist sometimes when display equipment navigation is worn in use
Superposition turning arrow, just needs the associated luminance information to outdoor scene light and virtual arrow to be analyzed simultaneously at this time when turning
Adjust the region obscurity of liquid crystal display.
With it is previous state embodiment compared with, the present embodiment on its basis further comprising steps of if
The pixel average brightness of second image is greater than second preset value, then reduces the whole saturating of the liquid crystal display
Luminosity.Integral light-transmitting degree at this time, wherein
MStandardNamely the second preset value above-mentioned, M?Refer to the pixel average brightness of the second image.
Certainly, if the pixel average brightness of second image is not more than second preset value, illustrate at this time
Image is clear that, it is only necessary to which the light transmittance of liquid crystal display maintains own light transmittance itself.
It, can also be by reducing between liquid crystal display upper and lower base plate when ambient brightness is dimmed under other scenes
Voltage improve liquid crystal display light transmittance, ensure wear display equipment clear display.
In the technical solution of the dimming device provided by the invention for wearing display equipment, referring to Fig. 3, which includes
The following contents:
Image acquisition units 10 acquire the first image.
First data-reading unit 20 reads brightness value and the time for exposure of each pixel of the first image.
First computing unit 30 calculates the of the first image using the brightness value and the time for exposure as parameter
One brightness value and the second brightness value.
Wherein first brightness value is the brightness value of each pixel, and second brightness value is each pixel
Average brightness value.The ratio between first brightness value and second brightness value are used as the first parameter.
First control unit 40 reduces by 50 corresponding region of liquid crystal display if first parameter is higher than the first preset value
Light transmittance.
The working principle of the dimming device disclosed by the invention for wearing display equipment is to acquire image and read its each pixel
The parameters such as the brightness value of point and time for exposure judge whether to need to adjust the light transmittance of liquid crystal display and control liquid crystal display by calculating
It adjusts the light transmittance of liquid crystal display in Rule of judgment achievement, and then orders the display content of display in the case where light variation
It can be can be clearly seen that by user.Therefore, the present invention, which realizes actively to adjust to wear under different lightness environment, shows that equipment is shown
The purpose of effect.
In another embodiment, further includes: the second control unit, if second brightness value is greater than the second preset value,
Then reduce the integral light-transmitting degree of the liquid crystal display.
Further, on the basis of the above embodiments, in another embodiment, the light modulation dress of display equipment is worn
It sets further include:
Second data-reading unit wears the luminance information for the second image that display equipment is shown described in reading.
Second computing unit calculates the second parameter of second image.
Wherein, the luminance information of second image includes the brightness value and described of each pixel of second image
The time for exposure of two images.
Second parameter is that the pixel of the brightness value and second image of each pixel of second image is lighted
Spend the ratio between average value.
Third control unit, if second parameter is higher than first preset value, according to the bright of second image
Degree information and second parameter calculate the first light transmittance of the liquid crystal display, and the light transmittance of the liquid crystal display corresponding region is dropped
Down to first light transmittance.
In other examples, in device provided by the invention further include: the 4th control unit, if described second
The pixel average brightness of image is greater than second preset value, then reduces the integral light-transmitting degree of the liquid crystal display.
Under one specific application scenarios, the use for wearing display equipment for being equipped with dimming device disclosed by the invention is worn
Family encounters the strong light of opposite or front vehicles in driving.Dimming device disclosed by the invention is worked as by acquisition at this time
Preceding first image simultaneously analyzes its associated luminance information, reduces the light transmittance in liquid crystal display region or entirety in time, prevents strong light
Stimulation causes user not see head-mounted display information and pavement behavior.In this scenario, provided by the invention to wear display and set
Standby dimming device, which has not only ensured, wears the clarity that display equipment shows content, further the peace of raising user driving
Quan Xing.
Certainly, the dimming device disclosed by the invention for wearing display equipment is corresponding with the light-dimming method for wearing display equipment
Relationship, therefore, wear display equipment dimming device working principle and implementation refer to previously with regard to wear display
The related description of the light-dimming method of equipment, details are not described herein again.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.
The light-dimming method of equipment and its device, which are described in detail, to be shown to a kind of wear provided by the present invention above.
Used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only used
The principle of the present invention and its core concept are understood in help.It should be pointed out that for those skilled in the art,
Without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention, these improvement and modification
It falls into the scope of the claims of the present invention.
Claims (6)
1. a kind of light-dimming method for wearing display equipment characterized by comprising
Acquire the first image；
Read brightness value and the time for exposure of each pixel of the first image；
The first brightness value and the second brightness of the first image are calculated using the brightness value and the time for exposure as parameter
Value；
Wherein first brightness value is the brightness value of each pixel, and second brightness value is the flat of each pixel
Equal brightness value；
The ratio between first brightness value and second brightness value are the first parameter；
If first parameter is higher than the first preset value, the light transmittance of liquid crystal display corresponding region is reduced;
The luminance information for the second image that display equipment is shown is worn described in reading；
Calculate the second parameter of second image；
Wherein, the luminance information of second image includes the brightness value of each pixel of second image, second figure
The time for exposure of picture；
Second parameter is that the pixel brightness of the brightness value and second image of each pixel of second image is flat
The ratio between mean value；
If second parameter is higher than first preset value, according to the luminance information of second image and second ginseng
Number calculates the first light transmittance of the liquid crystal display；
The light transmittance of the liquid crystal display corresponding region is reduced to first light transmittance.
2. the light-dimming method according to claim 1 for wearing display equipment, which is characterized in that further include:
If second brightness value is greater than the second preset value, the integral light-transmitting degree of the liquid crystal display is reduced.
3. the light-dimming method according to claim 1 for wearing display equipment, which is characterized in that further include:
If the pixel average brightness of second image is greater than second preset value, the entirety of the liquid crystal display is reduced
Light transmittance.
4. a kind of dimming device for wearing display equipment characterized by comprising
Image acquisition units acquire the first image；
First data-reading unit reads brightness value and the time for exposure of each pixel of the first image；
First computing unit calculates the first brightness of the first image using the brightness value and the time for exposure as parameter
Value and the second brightness value；
Wherein first brightness value is the brightness value of each pixel, and second brightness value is the flat of each pixel
Equal brightness value；
The ratio between first brightness value and second brightness value are the first parameter；
First control unit reduces the light transmittance of liquid crystal display corresponding region if first parameter is higher than the first preset value；
Second data-reading unit wears the luminance information for the second image that display equipment is shown described in reading；
Second computing unit calculates the second parameter of second image；
Wherein, the luminance information of second image includes the brightness value and second figure of each pixel of second image
The time for exposure of picture；
Second parameter is that the pixel brightness of the brightness value and second image of each pixel of second image is flat
The ratio between mean value；
Third control unit is believed if second parameter is higher than first preset value according to the brightness of second image
Breath and second parameter calculate the first light transmittance of the liquid crystal display, and the light transmittance of the liquid crystal display corresponding region is reduced to
First light transmittance.
5. the dimming device according to claim 4 for wearing display equipment, which is characterized in that further include:
Second control unit reduces the integral light-transmitting degree of the liquid crystal display if second brightness value is greater than the second preset value.
6. the dimming device according to claim 4 for wearing display equipment, which is characterized in that further include:
4th control unit reduces institute if the pixel average brightness of second image is greater than second preset value
State the integral light-transmitting degree of liquid crystal display.
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| WO2018232585A1 (en) * | 2017-06-20 | 2018-12-27 | 深圳市柔宇科技有限公司 | Method and apparatus for adjusting brightness of head-mounted display device |
| CN107749289B (en) * | 2017-10-20 | 2024-04-26 | 广东虚拟现实科技有限公司 | Brightness adjusting method and device, brightness adjusting system and augmented reality equipment |
| CN108563023B (en) | 2018-04-25 | 2020-11-27 | 京东方科技集团股份有限公司 | Augmented reality processing method and system, control equipment and augmented reality equipment |
| CN109189225A (en) * | 2018-08-30 | 2019-01-11 | Oppo广东移动通信有限公司 | Display interface method of adjustment, device, wearable device and storage medium |
| CN109144264A (en) * | 2018-08-30 | 2019-01-04 | Oppo广东移动通信有限公司 | Display interface method of adjustment, device, wearable device and storage medium |
| CN109509441B (en) * | 2018-11-20 | 2021-02-19 | 深圳市恩兴实业有限公司 | Dimming imaging method, device and system |
| CN114185172B (en) * | 2021-11-22 | 2024-03-29 | 深圳市思坦科技有限公司 | Ambient light intensity adjustment method and device, AR glasses and storage medium |
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Inventor after: Shi Xiaogang Inventor after: Xie Hui Inventor after: Wang Bingjie Inventor before: Xie Hui Inventor before: Wang Bingjie |