CN109448664A - Improve the environment optical generator of HDR display viewing effect - Google Patents
Improve the environment optical generator of HDR display viewing effect Download PDFInfo
- Publication number
- CN109448664A CN109448664A CN201811435417.5A CN201811435417A CN109448664A CN 109448664 A CN109448664 A CN 109448664A CN 201811435417 A CN201811435417 A CN 201811435417A CN 109448664 A CN109448664 A CN 109448664A
- Authority
- CN
- China
- Prior art keywords
- brightness
- ambient light
- display
- hdr
- display screen
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
本发明公开了一种提高HDR显示器观看效果的环境光发生器，包括依序连接的环境光亮度提取单元、环境光的驱动器和终端，其中：所述环境光亮度提取单元根据HDR图像的亮度分布决策出环境光的亮度数值，此数值送至所述环境光的驱动器驱动器产生相应的电压或电流输出；所述终端由上述的电压或电流最终驱动发出所需的环境光。于现有技术相比，本发明在观看HDR显示器的图像时，在该环境中增设一个产生环境光的装置，可有效的增加观看效果，避免眩光现象的发生，并对眼睛起很好的保护作用。The invention discloses an ambient light generator for improving the viewing effect of an HDR display, comprising an ambient light brightness extracting unit, an ambient light driver and a terminal connected in sequence, wherein: the ambient light brightness extracting unit is configured according to a brightness distribution of the HDR image A brightness value of the ambient light is determined, the value being sent to the driver driver of the ambient light to generate a corresponding voltage or current output; the terminal is ultimately driven by the voltage or current to emit the desired ambient light. Compared with the prior art, when viewing an image of an HDR display, the present invention adds a device for generating ambient light in the environment, which can effectively increase the viewing effect, avoid glare, and protect the eyes. effect.
Description
Technical field
The present invention relates to video display technology fields, more particularly to a kind of environment optical generator.
Background technique
High dynamic range (High Dynamic Range, HDR) display technology is the hot topic studied at present.It is in
Now perfect HDR image needs to meet two conditions, and first is high contrast, and second is brilliant color representation power.Certain
Ambient brightness under, Yao Tigao contrast will improve HDR show equipment brightness.The brightness ordinary circumstance of regular display
Only 300-400cd/m2, the brightness of HDR display will reach 1000cd/m2More than.But subjective test results show HDR
The brightness of display equipment is at least 10000cd/m290% spectators can be just made to be satisfied with the quality of HDR equipment.So
Display brightness is set to 10,000cd/m by DolbyVision2, so high brightness can bring the problem of viewer's eyes discomfort.
In general, viewing display equipment or mobile phone screen can feel pole in the case where environmental light brightness is lower or dark
Spend it is dazzling, that be because pupil of human can according to the size of luminous flux automatically adjust aperture.When extraneous ambient brightness is too low,
Pupil of human can excess shrinkage.It will cause human eye in the case where HDR shows the biggish situation of device brightness and extremely discomfort occur, therefore
How to realize that pupil of human adapts to the variation that HDR shows device brightness in time, without being protected from environmental, to improve viewing
Effect is very important.
The problem to be solved in the present invention, which is that HDR brightness of display screen is excessively high when environmental light brightness is lower, causes pupil of human to be received
The problem of contracting, the problem can be used " dazzle " phenomenon to describe.Dazzle is because brightness distribution or range do not conform in human eye sight
It fits, or comparison is extremely obvious, it is to cause uncomfortable and reduction object visibility.Dazzle injury is to human eye and psychology
Dual injury, brightness of display screen is higher, bigger with environmental light brightness contrast, injures bigger.The factor for influencing dazzle is main
Be: the brightness of display screen, the size of display screen, eyes adaptation level, the brightness around display screen and display screen are relative to view
The position of line.
Summary of the invention
The viewing effect under brightness and the higher situation of environment optical contrast ratio to improve HDR display, the present invention propose one
Kind improves the environment optical generator of HDR display viewing effect, increases by one " environment optical generator " at viewing scene, completely
Under the constraint condition of sufficient type unified glare value UGR=10, so that environmental light brightness becomes with the picture material of HDR display, thus
Achieve the effect that comfortably to watch.
The environment optical generator of a kind of raising HDR display viewing effect of the invention, including the environment light sequentially connected
Brightness extraction unit, the driver of environment light and terminal, in which:
The environmental light brightness extraction unit goes out the brightness number of environment light according to the Luminance Distribution decision of HDR image, send
Driver driver to the environment light generates corresponding voltage or electric current output；
The terminal is finally driven the environment light needed for issuing by above-mentioned voltage or electric current.
The environmental light brightness extraction unit includes following processing:
Set brightness of display screen La；
Display screen is set to the position of human eye, calculate display screen is approximately to the solid angle ω for the position that human eye is formed
0.0926sr；
Set ancient this location parameter P, P=1.00；
Calculate ambient light background brightness Lb；, bring the brightness of display screen value being calculated and parameter determined above into system
One dazzle value UGR formula, and UGR=10 is set, calculate ambient light background brightness
In formula, LbIndicate ambient light background brightness；
LaIndicate that brightness of display screen, ω indicate the solid angle that the luminous component of display screen forms human eye, P indicates Gu Siwei
Set parameter；
Image in set of samples is chosen, one group of numerical value of ambient light background brightness is acquired according to ambient light background brightness-formula,
Finally obtain brightness of display screen LaWith ambient light background brightness LbReach corresponding relationship when dynamic equilibrium.The data that will be obtained
It is carried out curve fitting with curve according to the tool box cftool that MATALB is carried, show that the smallest fitting of error is bent by comparing
Line is obtained in the case where avoiding non-comfort glare, and the functional relation of brightness of display screen and its background luminance, expression formula is such as
Under:
Y=0.0013x2-2.36e-5·x-6.32e-5
In formula, x indicates brightness of display screen；Y indicates background light level.
Y=0.0013x2-2.36e-5·x-6.32e-5
In formula, x indicates brightness of display screen；Y indicates background light level.
Optionally, the environmental light brightness extraction unit, the driver of the environment light, terminal and HDR display are installed
Together, being integrally formed structure.
Optionally, in other one in the environment optical generator of non-integral structure, needing will be by brightness of display screen and its
The environment bright angle value that the functional relation formula of background luminance calculates is transmitted to the environment optical generator that viewing people is worn
In, the environment optical generator also needs one wireless transmission unit of increase to complete this task.
Compared with prior art, the present invention adds a generation when watching the image of HDR display in this context
The device of environment light can effectively increase viewing effect, avoid the generation of glare phenomenon, and play protection well to eyes and make
With.
Detailed description of the invention
Fig. 1 is the environment optical generator structural schematic diagram of raising HDR display viewing effect of the invention；
Fig. 2 is that environmental light brightness extracts flow diagram；
Fig. 3 is maximum value process backlight illumination distribution map, (a) backlight illumination figure, (b) backlight illumination numerical matrix；
Fig. 4 be free from glare environment light condition under with brightness of display screen relationship scatter plot；
Fig. 5 is matched curve schematic diagram；
Fig. 6 is the schematic view of the mounting position of environment light belt.
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with drawings and specific embodiments.
The type unified glare value UGR (Unifled for using international lighting standard CIE to propose for quantitative assessment dazzle, the present invention
Glare Rating) it is used as evaluation criterion.Type unified glare value UGR be measurement lighting device in visual environment human eye to transmitting
The psychological parameter of the subjective response of light.It can be calculated by formula (1):
In formula, LbIndicate ambient light background brightness, unit cd/m2；LaThe screen center and human eye for indicating display screen regard
The brightness in line direction, unit cd/m2；ω indicates the solid angle that the luminous component of display screen forms human eye, and unit is spherical surface
It spends (steradian, sr)；P indicates this ancient location parameter, obtains from tabling look-up.
Under normal circumstances, the uncomfortable degree of non-comfort glare is characterized with the size of type unified glare value, corresponding relationship is such as
Shown in table 1:
The relationship of table 1, type unified glare value UGR and subjective sensation
As shown in upper table, when type unified glare value UGR is 10 or so, human eye feels the most comfortable.Therefore, target of the invention
Environmental light brightness and display screen intensity are exactly reached into dynamic equilibrium, i.e. type unified glare value UGR=10.
Since HDR shows that equipment mostly uses greatly region backlight, the brightness value of each region unit and the screen intensity in the region
There is direct relation.Therefore it can be calculated according to the brightness of region unit and meet the ambient brightness that type unified glare value UGR is 10.
Theoretical foundation of the invention is: solving glare phenomenon of the HDR display in viewing with type unified glare value, first
Meet the qualifications of UGR calculation formula.Since the area of general HDR display screen is less than 1.5m mostly2, and watch
Condition also meets qualifications.Therefore it is feasible for the glare phenomenon of HDR display being measured using type unified glare value.
The environment optical generator of raising HDR display viewing effect of the invention is by environmental light brightness extraction unit, brightness
Driver, the terminal three parts that shine composition.Environmental light brightness extraction unit will go out ring according to the Luminance Distribution decision of HDR image
The brightness number of border light, this numerical value send to driver and generate corresponding voltage or electric current output, and the voltage or electric current finally drive
The terminal that shines issues required environment light.It follows that the system part and parcel is exactly environmental light brightness extraction unit.
In the environmental light brightness extraction unit as core, environmental light brightness extracts process for environmental light brightness and display
The relationship of screen intensity quantifies, and the relationship for both introducing a kind of calculation to find solves display equipment in surrounding enviroment light
Uncomfortable phenomenon is generated when brightness is darker to human eye.As shown in Fig. 2, the environmental light brightness for environmental light brightness extraction unit mentions
Flow diagram is taken, step is as shown in Figure 2:
Specifically includes the following steps:
Step 1: setting brightness of display screen La；Brightness of display screen can be set there are many method, such as: AVE method, IMF method,
Revised law, mean value method, maximum value process etc..The present invention illustrates by taking maximum value process as an example: maximum value process is by a width standard
Image is divided into several block backlight areas, and the pixel value in more each region is simultaneously maximized backlight illumination as whole region
Value, to acquire the brightness value and its backlight illumination numerical matrix in each backlight area, as shown in Figure 2；Backlight signal and point are expanded again
It dissipates function PSF convolution and obtains the distribution of simulation backlight, brightness value is exactly the analogue value of brightness of display screen；
Step 2: setting display screen calculates the solid angle ω, ω of the position that display screen forms human eye to the position of human eye
It can be obtained from display screen luminous component in the ratio between square distance of the projected area in eye-observation direction and display screen center and human eye
Out, calculation formula is as follows:
It can obtain, solid angle and the projected area of display screen luminous component and the distance dependent of display screen and human eye.General feelings
Under condition, viewer is most preferably that the present invention takes 4 times of distances of HDR display screen height, i.e., apart from 3-4 times of liquid crystal display height
2.73m, it is convenient convenient for measurement, it is taken as integer i.e. 3m.Therefore, acquiring solid angle is about 0.0926sr；
Step 3: setting ancient this location parameter P；The center for showing equipment is placed in the position with human eye sight level,
And distance is 3m.It corresponds to using human eye as the three-dimensional cartesian coordinate system of coordinate origin, using position of human eye as coordinate origin, display is set
Standby position coordinates are (3,0,0), i.e. R=3m, H=0m, T=0m, H/R=T/R=0.P=can be obtained by inquiring this ancient coefficient table
1.00；
Step 4: calculating ambient light background brightness Lb；Using type unified glare value UGR=10 as target value, to simplify the calculation,
Patent inventor has chosen 40 width common images, forms a set of samples, and acquire ambient light background brightness according to (1) formula
One group of numerical value, finally obtains brightness of display screen and environmental light brightness LbCorresponding relationship under common image；
Step 5: linear fit；By brightness of display screen obtained by calculation in above-mentioned 40 width image and environmental light brightness
Data and sampled point carry out curve fitting according to the tool box cftool that MATALB is carried, show that error is the smallest by comparing
Matched curve is obtained in the case where avoiding non-comfort glare, the functional relation of brightness of display screen and its background luminance；It should
Step can carry out emulation experiment with the method for computer simulation, and analog result is as shown in Figure 4.Abscissa is that display screen is bright in figure
Angle value, ordinate are optimum environment bright angle value.As shown in figure 4, environment bright angle value and the brightness value of display screen have
Certain functional relation.Pass through curve matching, it can be deduced that binomial fitting error is minimum.It is illustrated in figure 5 matched curve
Figure.The functional relation of environmental light brightness and display screen intensity under conditions of meeting human eye and being comfortable on, expression formula is such as
Under:
Y=0.0013x2-2.36e-5·x-6.32e-5 (3)
In formula: x indicates brightness of display screen value, and y indicates optimum environment bright angle value.
It is 0.1032 with variance, root mean square 0.0528, determines that coefficient is 1, illustrates that fitting effect is fine.Meet this
Relationship, it can be ensured that the glare phenomenon that human eye will not be generated because of increasing substantially for display brightness.Formula (3) is used as and seeks ring
The foundation of border brightness is one of inventive point of the invention.
The activation configuration of environment light depends on the composition of terminal, i.e. the formation of environment light can be there are many method:
As shown in fig. 6, environment light source is mounted on HDR display surrounding, one " environment light belt " is formed.Human eye and light
The horizontal view angle Φ of bandL> 150 degree, vertical angle of view ΦH> 120 degree.The composition of environment light belt is unlimited, but to reserve controlled connect
Mouthful, make its brightness controlled.
Environment light source can be also mounted on to the oblique upper of viewer, but will be except the visual field of viewing HDR display screen.Ring
The composition of border light source is unlimited, but its driver will reserve controlled interface, makes its brightness controlled.
In the device of the head-mount one generation environment light of viewer.The composition of this environment light is unlimited, but its driver
Controlled interface is reserved, its brightness controlled is made.
According to the different form of terminal, driver is also not quite similar, and relates generally to the composition of hardware, and this patent is no longer retouched
It states.
When watching the image of HDR display, the device of a generation environment light is added in this context, can effectively be increased
Add viewing effect, avoids the generation of glare phenomenon, and good protective effect is risen to eyes.The brightness of environment light will be with picture
Luminance Distribution variation, the setting method of brightness will follow step shown in FIG. 1, and seek according to formula (3).
Present pre-ferred embodiments are described as follows:
The three parts of " environment optical generator " of the invention will be formed, it may be assumed that environmental light brightness extraction, driver and terminal,
It is installed together with HDR display, being integrally formed structure.
Mounting means one of the invention: environmental light brightness extraction unit, driver can be integrated with the machine core of HDR display
Together, consider as " the environment light belt " of terminal and display device structure are unified, be made into folding or other structures；By this
Mounting means is easiest to be fabricated to integral structure.
Mounting means two and mounting means three of the invention, is non-integral structure.Mounting means is second is that by environment light source
Be mounted on the oblique upper of viewer, mounting means third is that head-mount one of viewer generation environment light device.Due to
With HDR display non-integral, a wireless transmission unit need to be increased, data needed for environmental light brightness extraction unit are real-time
It is transferred to the corresponding units of two kinds of mounting means.
In conclusion technical solution of the present invention can be summarized as follows:
To improve the comfort level when watching the HDR program that HDR display is shown, " environment light occurs Yao Zengjia mono-
Device ".The selection of environmental light brightness increases by one " environment optical generator ", in the constraint condition for meeting type unified glare value UGR=10
Under, brightness becomes with the picture material of HDR display, to achieve the effect that comfortably to watch.
(that is: the constraint condition of type unified glare value UGR=10), environment bright under conditions of meeting human eye and being comfortable on
The functional relation of degree and display screen intensity, can be expressed with following formula:
Y=0.0013x2-2.36e-5·x-6.32e-5
Meet above formula relationship, it can be ensured that the glare phenomenon that human eye will not be generated because of increasing substantially for display brightness.
This formula is as the foundation for seeking environmental light brightness.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811435417.5A CN109448664A (en) | 2018-11-28 | 2018-11-28 | Improve the environment optical generator of HDR display viewing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811435417.5A CN109448664A (en) | 2018-11-28 | 2018-11-28 | Improve the environment optical generator of HDR display viewing effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109448664A true CN109448664A (en) | 2019-03-08 |
Family
ID=65554442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811435417.5A Pending CN109448664A (en) | 2018-11-28 | 2018-11-28 | Improve the environment optical generator of HDR display viewing effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109448664A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102968979A (en) * | 2012-11-12 | 2013-03-13 | 广东欧珀移动通信有限公司 | Screen brightness scheduling method based on curve fitting |
| CN104235788A (en) * | 2014-06-30 | 2014-12-24 | 苏州佳世达电通有限公司 | Illumination adjusting system |
| US20150373806A1 (en) * | 2013-01-25 | 2015-12-24 | Koninklijke Philips N.V. | Lighting device and lighting system |
| CN205726531U (en) * | 2016-04-18 | 2016-11-23 | 天津工业大学 | Indoor anti-glare intelligent lighting system |
| CN106507005A (en) * | 2016-12-05 | 2017-03-15 | 乐视控股（北京）有限公司 | The control method and device of backlight illumination |
| CN106535437A (en) * | 2016-11-30 | 2017-03-22 | 广东工业大学 | Brightness adjusting method and device and intelligent desk lamp |
-
2018
- 2018-11-28 CN CN201811435417.5A patent/CN109448664A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102968979A (en) * | 2012-11-12 | 2013-03-13 | 广东欧珀移动通信有限公司 | Screen brightness scheduling method based on curve fitting |
| US20150373806A1 (en) * | 2013-01-25 | 2015-12-24 | Koninklijke Philips N.V. | Lighting device and lighting system |
| CN104235788A (en) * | 2014-06-30 | 2014-12-24 | 苏州佳世达电通有限公司 | Illumination adjusting system |
| CN205726531U (en) * | 2016-04-18 | 2016-11-23 | 天津工业大学 | Indoor anti-glare intelligent lighting system |
| CN106535437A (en) * | 2016-11-30 | 2017-03-22 | 广东工业大学 | Brightness adjusting method and device and intelligent desk lamp |
| CN106507005A (en) * | 2016-12-05 | 2017-03-15 | 乐视控股（北京）有限公司 | The control method and device of backlight illumination |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10129520B2 (en) | Apparatus and method for a dynamic “region of interest” in a display system | |
| US6301050B1 (en) | Image enhancement system for scaled viewing at night or under other vision impaired conditions | |
| US10339896B2 (en) | Head-mounted display apparatus, and display method | |
| Vargas-Martin et al. | Augmented-view for restricted visual field: multiple device implementations | |
| US11546527B2 (en) | Methods and apparatuses for compensating for retinitis pigmentosa | |
| TW201626046A (en) | Head-mounted display device, method of controlling head-mounted display device, and computer program | |
| CN101567171A (en) | Method and system for regulating backlight of liquid crystal display television | |
| CN104423041A (en) | Head mounted display and method for controlling head mounted display | |
| US20150304625A1 (en) | Image processing device, method, and recording medium | |
| CN105513565A (en) | Displayer picture adjusting method and device | |
| CN109147681A (en) | The eyeshield mode regulating method and display device of display device | |
| WO2021031822A1 (en) | Image display method, apparatus and system for head-mounted display device | |
| CN107731201B (en) | Screen brightness adjusting method and device | |
| US20190302886A1 (en) | Methods and Apparatus for Vision Enhancement | |
| US11715405B1 (en) | Chroma modification based on ambient light characteristics | |
| JP6561606B2 (en) | Display device and control method of display device | |
| US20110170068A1 (en) | Method and apparatus for self-examination of the eye | |
| CN109448664A (en) | Improve the environment optical generator of HDR display viewing effect | |
| CN106775527B (en) | Adjust the method, apparatus and display equipment of the display parameters of display panel | |
| CN119234263A (en) | Display method applied to display device, display device and electronic equipment | |
| JP2903604B2 (en) | Image display device | |
| CN208673704U (en) | A kind of display device regulator control system and display device | |
| CN207249236U (en) | 3D microscopes based on mixed reality | |
| US12033556B1 (en) | Per-pixel color correction based on ambient light characteristics | |
| Kim et al. | Auto-brightness control technology depending on user’s pupil area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190308 |