CN110399633A - Display color management implementation method capable of correcting glare influence - Google Patents
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- CN110399633A CN110399633A CN201910492196.3A CN201910492196A CN110399633A CN 110399633 A CN110399633 A CN 110399633A CN 201910492196 A CN201910492196 A CN 201910492196A CN 110399633 A CN110399633 A CN 110399633A
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- 230000004313 glare Effects 0.000 title claims abstract description 42
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- 238000002310 reflectometry Methods 0.000 claims abstract description 8
- 238000007726 management method Methods 0.000 claims description 27
- 238000005259 measurement Methods 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002269 spontaneous effect Effects 0.000 claims description 5
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Abstract
The invention discloses a display color management implementation method capable of correcting glare influence, which comprises the steps of calculating a tristimulus value of glare generated on the surface of a display by detecting spectral radiation power distribution of ambient light and spectral reflectivity of the display in a backlight off state, detecting tristimulus values of self-luminous colors of the display under multiple groups of standard RGB control values, converting each tristimulus value of self-luminous color into L after adding the tristimulus value of the glare to each tristimulus value of self-luminous color, and converting the L into L*a*b*Value, using a series of RGB values and corresponding L*a*b*Values are made to the display profile and set to the default display device profile. The invention can realize color management of the display equipment under the bright room condition, and can ensure that the display colors and the digital files seen by human eyes under the bright room condition are in L*a*b*The chromatic values in the color space are consistent, thereby meeting the requirements of the color reproduction industryAnd under the room condition, the display is used for carrying out color proofing, pigment matching, artistic design and the like.
Description
Technical field
The present invention relates to Color Replication fields, and in particular to the display color management that one kind can correct glare influence is real
Existing method.
Background technique
Industry relevant to Color Replication, such as publication, printing, textile printing, furniture surfacing stamp, ceramic printing need
To utilize the color of display simulative display hard copy, it is desirable that the color of simulative display and hard copy color close to,
With meet using display realize color draw a design, colorant color matching, the needs such as Art Design.
The color management of existing international color consortium (international color consortium ICC) solves
Scheme is the chromatic value L of the color control values RGB for first establishing display and presentation*a*b*Corresponding relationship between value, it is referred to as aobvious
Show the characteristic file of device, recycle the software with color management functionality, such as Adobe Photoshop, will open or newly-built
Digital image file, be embedded in from current color space according to digital document or specified characteristic file be transformed into L*a*b*Face
The colour space recalls the characteristic file of display, is converted to the color control values RGB of display, realizes the display of color, makes to show
Show the original copy color that color reproduction digital document is recorded.
But color measurement instrument is adsorbed on screen when making display characteristics file by existing color management method
Scene plot planar survey screen show color, avoid the influence of environment light, establish display color controlling value RGB and display chromatic value it
Between mapping relations.According to the color shown after the conversion of this mapping relations, theoretically need display to be placed in approximate black
It is observed in dark space, just it is observed that correct color.However, in practical applications, either in office, design office,
Or workshop, usually watches the image of display under the conditions of bright room, and environment light is inevitably irradiated to display
On, enter human eye together with display self-luminous after reflection, affects people to display image, the especially observation of shadow part
Effect, influence of this environment light to display color are known as glare effect, and glare effect makes one the bright of seen display color
Degree increases, saturation degree declines, contrast is reduced.
Therefore, display is observed under bright room environmental, needed on the basis of existing ICC Color Management Technology, corrected
Influence of the glare to eye-observation display color.Xu Yanfang, Liu Xiaoning are in " influence research of the ambient lighting to display colour generation "
One text proposes for color measurement instrument to be placed on the place away from screen 25cm or so and measures to screen color, the received light letter of instrument
Include the glare effect of environment light in number, establish monitor characteristic profile further according to measurement data, realizes the color under the conditions of bright room
Color management.But telemeasurement screen color is needed using spectroradiometer, color accuracy is higher but instrument price is expensive,
Measuring speed is slow, and measured value is influenced by the relative position between instrument and screen, repeatability it is poor, therefore, this method with set
The standby display color management not being suitable in production.
Summary of the invention
The present invention proposes a kind of display color management implementation method that can correct glare influence, solves existing ICC
Color management method is not suitable for the display color control under the conditions of bright room, and the color for causing eye-observation to arrive is due to by environment light
The problem of the influence that screen surface reflects is distorted.
In order to achieve the above object of the invention, the invention adopts the following technical scheme:
A kind of display color management implementation method that can correct glare influence, comprising the following steps:
S1, detection calculate the tristimulus values for the glare that environment light is generated in display surface；
S2 detects the tristimulus values of spontaneous light color of the calculation display under multiple groups standard RGB controlling value；
S3 is converted to L after being added each self-luminous tristimulus values with the tristimulus values of glare*a*b*Value；
S4 utilizes a series of rgb values and corresponding L*a*b*Value production display characteristics file, and it is set as system default
Show device characteristics file.
Further, the method that detection calculates the tristimulus values for the glare that environment light is generated in display surface is: closing
Indicator screen backlight is denoted as ρ (λ) using the spectral reflectivity of spectrophotometer measurement screen, then measures in screen surface
The spectral radiant power of environment light is distributed, and is denoted as S (λ), is calculated the tristimulus values of the glare of screen reflection, formula are as follows:
Wherein X0、Y0、Z0For the tristimulus values of glare,For the sight of CIE1931 standard colorimetric
The person's of examining spectral tristimulus value, π are pi；
Further, the method for self-luminous tristimulus values of the detection calculation display under various RGB controlling values is: opening
Indicator screen backlight allows display to show n group rgb value in turn, is denoted as R after preheating 30 minutesiGiBi, i is the sequence from 1 to n
Number, screen surface, which is adsorbed on, with spectrophotometer measures each group of RiGiBiThe color that controlling value sub-screen self-luminous is shown obtains
Spectral radiant power is distributed E (λ)i, then calculate tristimulus values XiYiZi, formula are as follows:
Further, L is converted to after the tristimulus values of each spontaneous light color to be added to the tristimulus values of glare*a*b*Value
Method be: by the tristimulus values X of each group of rgb value controlling value sub-screen self-luminous display coloriYiZiWith the three of screen glare
Values X0Y0Z0It is added, formula are as follows:
Wherein Xi′、Yi′、Zi' it is i-th group of RGB controlling value sub-screen self-luminous plus the tristimulus values after glare.It recycles
Xi′Yi′Zi' value, with D50Standard illuminants is that reference white calculates L*a*b*Value, is denoted as
Further, in the spectral radiant power distribution for measuring environment light in screen surface, screen backlight must be in pass
Closed state, screen must be placed in environment locating when normal use, and measuring head is vertical and primary away from screen direction measurement, is denoted as S
(λ)1, measuring head angular direction measurement 4 times at 45 ° away from screen, 90 ° are spaced on the face for be parallel to screen every time, is denoted as S (λ)2、
S(λ)3、S(λ)4、S(λ)5, average value is calculated using 5 measured values, is denoted as the spectral radiant power point of the environment light of screen surface
Cloth S(λ), calculation formula are as follows:
The invention has the benefit that
The present invention can be realized the color management of the display equipment under the conditions of bright room, and human eye under the conditions of bright room can be made to see
Display color and digital document in L*a*b*Chromatic value in color space is consistent.In the relevant industry of Color Replication, tool is utilized
The software of colored management function, the method migration by the digital image file of RGB or CMYK mode, according to ICC color management
To L*a*b*Color space, then method according to the present invention are converted to the color control values RGB of display, can make display color
The original copy color that digital document is recorded is accurately reproduced, satisfaction is drawn a design using display progress color, colorant is matched colors, art is set
Meter etc. needs.Meanwhile method of the invention, calculation display self-luminous and display again are measured using same color detecting instrument
The tristimulus values of glare is reflected, low for equipment requirements, detection efficiency is high.
Detailed description of the invention
Fig. 1 is the display color management implementation flow chart that can correct glare influence of the embodiment of the present invention；
Fig. 2 is placement location of the color measurement instrument of the embodiment of the present invention on the face perpendicular to indicator screen；
Fig. 3 is placement location of the color measurement instrument of the embodiment of the present invention on the face for being parallel to indicator screen.
Specific embodiment
Studies have shown that the reflected light of display surface is as whether display backlight is opened and display is self luminous
Color change and change, so, the tristimulus values of the display color that human eye is observed under the conditions of bright room is equal under dark room conditions
The sum of reflected light tristimulus values under the tristimulus values and display backlight closed state of display color.The present invention is according to this principle
Realize the color management of display color, the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Using the spectrum that there is the distribution of radiation of light source power, display spontaneous emission power to be distributed, reflect object simultaneously
Measuring device of the spectrophotometer of the detection function of reflectivity as the method for the present invention, such as the I1Pro of X. Rite Inc., together
When the different object of one apparatus measures, because having identical sampling interval and spectral sensitivity, be conducive to precision and computational efficiency.
As shown in Figure 1, a kind of display color management implementation method that can correct glare influence, comprising the following steps:
Indicator screen backlight is closed, spectrophotometer is adjusted to the reflection that can detect reflection object spectral reflectivity and is surveyed
Amount mode, is lightly placed in screen surface, measures the spectral reflectivity of screen, is denoted as ρ (λ)；
Indicator screen backlight is kept to be in close state, screen is placed in environment locating when normal use, will be divided
Photometer is adjusted to the ambient light measurement mode that can detect the distribution of radiation of light source power, by spectrophotometer close to screen surface,
Measuring head is vertical and primary away from screen direction measurement, is denoted as S (λ)1, measuring head angular direction measurement 4 times at 45 ° away from screen,
90 ° are spaced on the face for be parallel to screen every time, as shown in Figure 2 and Figure 3, is denoted as S (λ)2、S(λ)3、S(λ)4、S(λ)5, by 5 times
Measured value calculated by formula (1), is denoted as spectral radiant power distribution S (λ) of the environment light of screen surface:
Using the spectral reflectivity of the spectral radiant power distribution and indicator screen of display present position, display is calculated
The tristimulus values of the glare of device screen reflection, formula are as follows:
Wherein X0、Y0、Z0For the tristimulus values of glare,For the sight of CIE1931 standard colorimetric
The person's of examining spectral tristimulus value, π are pi；
After opening the preheating of indicator screen backlight 30 minutes, using existing software, such as X. Rite Inc.
MeasureTool etc., or program is write, it allows display to show n group standard RGB controlling value in turn, is denoted as RiGiBi, i is from 1
To the serial number of n, spectrophotometer is made to be adsorbed on screen surface, spectrophotometer adjusting is distributed to that can detect screen radiant power
Radiometric pattern, measure each group of RiGiBiThe color of the corresponding display of value, obtains the self luminous spectral radiant power of screen point
Cloth E (λ)i, the tristimulus values X of screen self-luminous color lump is calculated according still further to formula (3)iYiZi:
By the tristimulus values of each self-luminous color lump plus the tristimulus values of glare under backlight closed state, it is equivalent to
The tristimulus values that human eye is experienced under bright room environmental, shown in calculation method such as formula (4):
Wherein Xi′、Yi′、Zi' it is that i-th group of rgb value corresponds to display color plus the tristimulus values after screen glare.It recycles
Xi′Yi′Zi' value, with D50Standard illuminants is that reference white calculates L*a*b*Value, is denoted asCalculation method such as formula (5) and
(6) shown in:
Wherein XD50、YD50、ZD50For D50The tristimulus values of standard illuminants is respectively as follows: 96.42,100.00,82.49, letter
Number f are as follows:
Utilize n group rgb value RiGiBi(i is the serial number from 1 to n) and corresponding n group L*a*b*ValueUtilize existing color
Color management tool software makes display characteristics file, in electricity such as the ProfileMaker or self-programmed software of X. Rite Inc.
In cerebral color ultrasonograph, it sets the display characteristics file of generation to the display device characteristics file of system default.Recycle tool
The image processing software of colored management function, such as the Photoshop of Adobe company, opening RGB mode or CMYK mode
Image file, the characteristic file of software transfer image file insertion, or specified characteristic file by color space from RGB or
CMYK is transformed into L*a*b*Color space recalls the characteristic file of the display equipment of system default, is converted to RGB controlling value, uses
It is shown in control color；If software opens L*a*b*The image file of mode then calls directly the display equipment of system default
Characteristic file, by color value from L*a*b*Color space conversion is the color control values of rgb space, is shown for controlling color.By
The L in the characteristic file of the display equipment of current default*a*b*It include the influence of glare in the chromatic value of color space, with current
The color that RGB controlling value is shown, the visual effect observed under ambient light are equal to digital image file in L*a*b*Color space
Chromatic value, it is possible to realize under the conditions of bright room correct color reproduction.
The preferred embodiment of the present invention and principle are described in detail above, to those skilled in the art
Speech, the thought provided according to the present invention will change in specific embodiment, and these changes also should be regarded as the present invention
Protection scope.
Claims (8)
1. the display color management implementation method that one kind can correct glare influence, which comprises the following steps:
S1, detection calculate the tristimulus values for the glare that environment light is generated in display surface；
S2 detects the tristimulus values of spontaneous light color of the calculation display under multiple groups standard RGB controlling value；
S3 is converted to L after being added the tristimulus values of each spontaneous light color with the tristimulus values of glare*a*b*Value；
S4 utilizes a series of rgb values and corresponding L*a*b*Value production display characteristics file, and it is set as the display of system default
Device characteristics file.
2. one kind according to claim 1 can correct the display color management implementation method of glare influence, feature
It is, step S1 specifically:
S11 closes indicator screen backlight, measures the spectral reflectivity of indicator screen, be denoted as ρ (λ)；
S12 measures the spectral radiant power distribution of environment light on indicator screen surface, is denoted as S (λ), calculation display screen
The tristimulus values of the glare of curtain reflection, formula are as follows:
Wherein X0、Y0、Z0For the tristimulus values of glare,For CIE1931 standard colorimetric observer
Spectral tristimulus value, π are pi.
3. one kind according to claim 1 can correct the display color management implementation method of glare influence, feature
It is, step S2 specifically:
S21 opens indicator screen backlight, and after preheating 30 minutes, display shows n group rgb value in turn, is denoted as RiGiBi, i is
Serial number from 1 to n,
S22 measures each group of RiGiBiThe color that indicator screen self-luminous is shown under controlling value obtains spectral radiant power point
Cloth E (λ)i, calculate tristimulus values XiYiZi, formula are as follows:
4. one kind according to claim 1 can correct the display color management implementation method of glare influence, feature
It is, the step S3 specifically:
By the tristimulus values X of each group of rgb value controlling value sub-screen self-luminous display coloriYiZiWith the tristimulus of screen glare
Value X0Y0Z0It is added, formula are as follows:
Wherein Xi′、Yi′、Zi' it is that i-th group of RGB controlling value sub-screen self-luminous adds the tristimulus values after glare；Utilize Xi′Yi′Zi′
Value, with D50Standard illuminants is that reference white calculates L*a*b* value, is denoted as
5. one kind according to claim 2 can correct the display color management implementation method of glare influence, feature
It is,
In step S12, in the spectral radiant power distribution for measuring environment light on indicator screen surface, screen backlight must be in
Closed state, screen must be placed in environment locating when normal use,
Measuring head is vertical and primary away from screen direction measurement, is denoted as S (λ)1, measuring head is away from screen angular direction measurement 4 at 45 °
It is secondary, 90 ° are spaced on the face for be parallel to screen every time, is denoted as S (λ)2、S(λ)3、S(λ)4、S(λ)5, calculated using 5 measured values
Average value is denoted as the spectral radiant power distribution S of the environment light of screen surface(λ), calculation formula are as follows:
6. one kind according to claim 2 can correct the display color management implementation method of glare influence, feature
It is: in step S11, utilizes the spectral reflectivity of the Reflection measurement mode measurement indicator screen of spectrophotometer.
7. one kind according to claim 2 can correct the display color management implementation method of glare influence, feature
It is: in step S12, is distributed using the spectral radiant power of the ambient light measurement mode measurement environment light of spectrophotometer.
8. one kind according to claim 3 can correct the display color management implementation method of glare influence, feature
It is: in step S22, spectrophotometer is made to be adsorbed on screen surface, measures each group of R using radiometric patterniGiBiControl
The color that value sub-screen self-luminous is shown, obtains spectral radiant power distribution E (λ)i。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116324365A (en) * | 2020-10-02 | 2023-06-23 | 大日本印刷株式会社 | Method for correcting glare contrast, method and device for comparing glare contrast, method for manufacturing electronic display, and method for manufacturing antiglare layer |
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| JPH08292735A (en) * | 1994-12-16 | 1996-11-05 | Ricoh Co Ltd | Crossconversion system of light emission control signal for color display and tristimulus values of object color and crossconversion method |
| KR20030017127A (en) * | 2001-08-24 | 2003-03-03 | 김홍석 | The apparatus and method for ICC profile making of CRT color monitor |
| CN104301580A (en) * | 2014-09-30 | 2015-01-21 | 杭州电子科技大学 | Method for achieving newspaper printing soft-proofing color consistency |
| CN108418996A (en) * | 2018-05-07 | 2018-08-17 | 杭州电子科技大学 | A kind of color control method of work of fine arts Digital Display |
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2019
- 2019-06-06 CN CN201910492196.3A patent/CN110399633B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08292735A (en) * | 1994-12-16 | 1996-11-05 | Ricoh Co Ltd | Crossconversion system of light emission control signal for color display and tristimulus values of object color and crossconversion method |
| KR20030017127A (en) * | 2001-08-24 | 2003-03-03 | 김홍석 | The apparatus and method for ICC profile making of CRT color monitor |
| CN104301580A (en) * | 2014-09-30 | 2015-01-21 | 杭州电子科技大学 | Method for achieving newspaper printing soft-proofing color consistency |
| CN108418996A (en) * | 2018-05-07 | 2018-08-17 | 杭州电子科技大学 | A kind of color control method of work of fine arts Digital Display |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116324365A (en) * | 2020-10-02 | 2023-06-23 | 大日本印刷株式会社 | Method for correcting glare contrast, method and device for comparing glare contrast, method for manufacturing electronic display, and method for manufacturing antiglare layer |
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