CN114040539B - Light source implementation method for highlighting main color - Google Patents
Light source implementation method for highlighting main color Download PDFInfo
- Publication number
- CN114040539B CN114040539B CN202111298518.4A CN202111298518A CN114040539B CN 114040539 B CN114040539 B CN 114040539B CN 202111298518 A CN202111298518 A CN 202111298518A CN 114040539 B CN114040539 B CN 114040539B
- Authority
- CN
- China
- Prior art keywords
- color
- light
- module
- light source
- spectrum
- 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
- 238000000034 method Methods 0.000 title claims description 19
- 238000001228 spectrum Methods 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 239000003086 colorant Substances 0.000 claims description 28
- 239000013598 vector Substances 0.000 claims description 23
- 238000000985 reflectance spectrum Methods 0.000 claims description 8
- 230000003313 weakening effect Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 3
- 235000019646 color tone Nutrition 0.000 claims 3
- 230000000694 effects Effects 0.000 description 5
- 238000000295 emission spectrum Methods 0.000 description 5
- 235000013372 meat Nutrition 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 241000227425 Pieris rapae crucivora Species 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses an LED backlight source realization system for highlighting a main color, which comprises an optical detection module, an algorithm module and a light-emitting device module; the optical detection module receives detection information; the algorithm module calculates driving information of the light emitting device according to the information transmitted by the optical module; the light emitting device module emits corresponding spectrums according to the driving information calculated by the algorithm module; the light-emitting device module comprises a plurality of paths of driving circuits, a plurality of paths of light-emitting modules and a single light-mixing module; the driving circuit drives the light-emitting module to emit light according to the driving current calculated by the algorithm module, and then the light-emitting module is used for fully mixing the light-emitting spectrum to enable the whole light to emit light; each path of driving current independently drives each light emitting module; the current of each driving circuit is independently adjustable, and the luminous intensity of each corresponding luminous module is also independently adjustable; the main color is highlighted, the light emitting device is ensured to still emit white light, the white balance judgment of human eyes and electronic equipment is not influenced, and the color of an object is displayed.
Description
Technical Field
The invention relates to the field of spectrum, in particular to a light source implementation method for highlighting a main color.
Background
The appearance of various object colors by common white light sources such as fluorescent lamps and Light Emitting Diode (LED) light sources tends to be synchronously enhanced or synchronously reduced compared to natural light. In the same lighting scene, various colors become more vivid at the same time or more dim at the same time, and a certain color cannot be highlighted. However, in video lighting, artwork lighting, and special commercial lighting scenes, a user often needs to highlight one to two colors in the scene, namely the main colors, such as accent red, other colors unchanged, accent green and blue, fade other colors, etc.
The display of the object color is determined by both the reflection spectrum of the object and the spectrum of the illumination source. Common white light sources such as fluorescent lamps and LEDs have spectral energy distributions in the red, green and blue bands, which cause the colors of objects of various colors to exhibit similar characteristics: the various colors of the object under normal light sources are either simultaneously enhanced or simultaneously reduced as compared to the color of the object under daylight, as shown in fig. 1: FIG. 1 shows the spectrum of an LED white light source, illuminated monochromatic object (Meng Seer P5/10 color chart) and reflected light, it can be seen that when the LED white light impinges on the color chart, a portion of the light in one band (500 nm to 600nm in the figure) is absorbed, while the light in the other band is reflected; the spectrum of the reflected light is different from that of the incident light, and compared with the true color of the object, the blue energy (the wave band from 400nm to 500 nm) of the reflected light occupies a larger proportion, so that the color of the object is reinforced as a whole. The above is a spectral variation analysis of a color sample, often with multiple colors in a lighting scene. In order to highlight the specific color, there are mainly two solutions:
1. matching a particular light source for a body color, such as some fluorescent light bulbs, has an enhanced effect on red and green colors, while weakening for other colors.
2. Instead of using white light sources, red-bias light sources are used to boost red, or green-bias light sources are used to boost green. For example, red lampshades are often used in fresh markets, and red-colored lamplight is used for illuminating meat, so that the meat looks more vivid.
Whereas existing light source matching schemes have the following disadvantages:
1. multiple attempts are required: different light sources are needed for matching different main colors, and as various white light sources are designed not to highlight a certain main color but to simulate the color development effect of sunlight as much as possible, the white light sources are designed according to a certain color development index (CRI), so that different light sources are needed to be matched for a plurality of times for highlighting a specific main color, the real-time adjustment requirement cannot be met, and the feasibility is low.
2. The main color enhancement effect is poor: the intensity of a white light source for a particular color is limited and other non-body colors are inevitably also enhanced, which makes the body colors not effectively highlighted. Fig. 2 shows the spectrum of an F32T8 fluorescent lamp tube, fig. 3 shows the evaluation of the color enhancement/degradation percentages of 16 average color samples using IES-TM30 (see reference David, aurelian et al, development of IES method for evaluating color reproduction of light sources, optical flash report 23.12 (2015), number 1 for red color samples, number 6 for green color samples, number 12 for blue samples, and other numbers for intermediate colors between the three.
The existing non-white light source matching scheme has the defects that:
1. the degree of protrusion of the body is not controllable: wrapping colored filter paper outside white light or using colored light sources can enhance the corresponding colors, but the degree of color enhancement is not controllable, as a result, the object color is excessively enhanced beyond the comfort range of human eye recognition. One example is to illuminate meat with a reddish light source, and the customer perceives the color as false despite the vivid color of the meat.
2. The feasibility is low when different colored filter papers or colored light sources are matched for different main colors.
3. The colored light source affects the comfort of the human eye and also affects the white balance settings of cameras, video cameras and the like, so that the color effect of the object cannot be truly captured by the human eye or electronic equipment.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an LED backlight source realization system with main color protruding.
The technical scheme of the invention is as follows: an LED backlight realization system for highlighting a main color: the system comprises an optical detection module, an algorithm module and a light emitting device module; the optical detection module receives detection information; the algorithm module calculates driving information of the light emitting device according to the information transmitted by the optical module; the light emitting device module emits corresponding spectrums according to the driving information calculated by the algorithm module; the light-emitting device module comprises a plurality of paths of driving circuits, a plurality of paths of light-emitting modules and a single light-mixing module; the driving circuit drives the light-emitting module to emit light according to the driving current calculated by the algorithm module, and then the light-emitting module fully mixes the light-emitting spectrum to enable the whole light to emit light; each path of driving current independently drives each light emitting module; the current of each driving circuit is independently adjustable, and the luminous intensity of each corresponding luminous module is also independently adjustable.
The preferable technical scheme is as follows: the detection information is spectral or RGB color information.
The preferable technical scheme is as follows: the algorithm module judges the tone of the main color in the scene according to the detection information, and obtains the tone area information of the main color according to the spectrum of the reference light source by the following method: ,
first, calculating XYZ tristimulus values corresponding to spectra
Where S (λ) is the energy distribution of the spectrum, λ is the wavelength, in nanometers (nm),
is a color matching function; the upper and lower limits of the integration are visible light wave bands: 380 nm-780 nm.
The preferable technical scheme is as follows: calculating color coordinates (a, b) in a color space from tristimulus values XYZ:
wherein:
xn, yn, zn are tristimulus values of the reference light source.
The preferable technical scheme is as follows: and judging which tone area the color belongs to according to the color coordinates (a and b), and after the tone area of the main color is obtained, finishing the definition of the main color by the algorithm module.
The preferable technical scheme is as follows: according to the detection information obtained by the optical detection module, calculating the color temperature of the ambient light, and then according to the color temperature, adopting sunlight with the same color temperature as a reference light source to obtain the spectrum of the reference light source.
The preferable technical scheme is as follows: after the definition of the main color is completed, whether the spectrum of the ground color is white or not needs to be evaluated, and the color deviation value DUV is calculated; outputting if the ground color spectrum is white; if the ground color spectrum is not white, continuing to judge in the ground color database.
The preferable technical scheme is as follows: after passing through the luminous spectrums of the reference light source and the current target light source, respectively calculating
Color coordinates (a, b) of the color sample under illumination by the two light sources in IES-TM30 standard; first, count
The reflectance spectrum was calculated as follows:
S r，i (λ)＝S(λ)R i (λ)
wherein S is r，i (lambda) is the reflection spectrum of the ith IES-TM30 color sample, S (lambda) is the reference light spectrum or the target light spectrum, R is calculated separately i (lambda) is the reflectance spectrum of the color sample in the ith IES-TM-30 standard.
The beneficial effects achieved by the invention are as follows: the invention provides an LED backlight source realization system for highlighting a main color, which can automatically identify the main color in a scene, adjust the light-emitting spectrum in real time, strengthen the main color, weaken other colors and achieve the purpose of highlighting the main color. The invention also provides a lighting device corresponding to the method, and the process is realized.
1. The invention solves the problem that the main body salience degree is uncontrollable or low, and can quantitatively set the main body color salience degree in the system.
2. The invention solves the problem of matching the main body colors, can manually set or automatically detect the main body colors of the scene, and automatically adjusts the light-emitting spectrum to strengthen the main body colors. The method and the system can meet the requirements of different main colors of different scenes by using the same light source, do not need to match with various light sources, and have strong feasibility.
3. The invention solves the problem of non-white light. The invention can ensure that the light-emitting device still emits white light while highlighting the main color, does not influence the white balance judgment of human eyes and electronic equipment, and truly displays the color of an object.
Drawings
FIG. 1 is a graph showing the spectrum of an illuminated object (Meng Seer P5/10 color chip) and reflected light from an LED white light source of the present invention.
FIG. 2 is a spectrum of a tube of the F32T8 fluorescent lamp of the present invention;
FIG. 3 is a graphical representation of the assessment of the percent color increase/decrease of a spectrum of an F32T8 fluorescent lamp tube versus a 16 average color sample using the IES-TM30 method of the present invention;
FIG. 4 is a schematic diagram of a white light source implementation system highlighting a body color in accordance with the present invention;
FIG. 5 is a graph showing the overall emission spectra of the light emitting module of the present invention under different driving arrangements;
FIG. 6 is a schematic diagram of an algorithm module of the present invention;
FIG. 7 is a reflectance spectrum of a portion of the color samples (IES 01-IES 10) in the IES-TM-30 standard of the invention;
FIG. 8 is a graph of 16 average color saturation vectors of the present invention;
FIG. 9 is a graphical representation of the spectrum and standard color wavelength range value indicators of outdoor daylight;
FIG. 10 is a graphical illustration of the spectrum and standard color wavelength range values for green enhanced fluorescent lamp light;
FIG. 11 is a graphical illustration of the spectrum and standard color wavelength range values for a green enhanced LED lamp;
FIG. 12 is a graphical representation of the spectrum and corresponding standard color wavelength range value indicators for yellow and violet enhanced light sources;
FIG. 13 is a graphical representation of the spectrum of red and green enhanced light sources and corresponding standard color wavelength range value indicators;
FIG. 14 is a graphical illustration of the spectrum of a green enhanced light source and corresponding standard color wavelength range value indicators;
FIG. 15 is a graphical representation of the spectrum of a yellow enhanced light source and corresponding standard color wavelength range value indicators.
Detailed Description
In order to facilitate understanding of the invention by those skilled in the art, a specific embodiment of the invention is described below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 6, the present invention provides a method for implementing a light source with a main color, which comprises the following steps:
step S1, transmitting detection information to an algorithm module by optical detection equipment;
s2, a step of S2; the algorithm module judges the information of the dominant color tone area in the scene through the detection information;
step S3, extracting a main standard color sample of the main color according to the main color tone area information;
step S4, respectively calculating a first color coordinate of the main standard color sample under the reference light source and a second color coordinate of the main standard color sample under the target light source according to the main standard color sample;
s5, calculating a main color saturation vector of a main standard color sample according to the first and second color coordinates;
step S6: evaluating whether the primary color saturation vector direction is toward the color enhancement direction and evaluating whether the saturation vector of the other hue is toward the color fade direction;
step S7, if the main color saturation vector direction is towards the color enhancement direction, outputting current main target light source driving information;
step S8: if the saturation vector direction of the other hue is toward the color fade direction; outputting driving information of other tone sub-target light sources;
step S9, the information driving device is driven according to the main target light source and the other tone sub-target light sources to generate a total target spectrum.
The preferable technical scheme is as follows: the detection information in step S1 includes spectral or RGB color information.
The preferable technical scheme is as follows: the reference light source in step S4 is obtained by the algorithm module based on the detection information in step S1.
The preferable technical scheme is as follows: step S6: evaluating whether the dominant color saturation vector direction is toward the color enhancement direction; if the color is not in the color enhancement direction, the primary difference value is obtained by subtracting the primary standard color wavelength range value from the current primary color saturation vector.
The preferable technical scheme is as follows: and according to the main difference value, obtaining the secondary driving information of the secondary target light source after the next iteration by optimizing the iteration parameter.
The preferable technical scheme is as follows: according to the secondary driving information, firstly, whether the ground color sample is white light needs to be judged, and the steps are as follows:
step S31: reading whether the ground color is white light according to the information of the ground color database;
step S32, if the background color is white light, executing step S4;
step S33, if the ground color is not white light, step S31 is performed.
The preferable technical scheme is as follows: step S6, evaluating whether the saturation vector of other tone points to the color weakening direction; if the color weakening direction is to be followed, obtaining a secondary difference value by subtracting the magnitude of the current other color saturation vector from the values of the wavelength ranges of the other color standards, obtaining driving information of the secondary target light source of the next iteration by optimizing iteration parameters according to the secondary difference value, and continuously executing the step S4 to calculate the second secondary color coordinates under the target light source.
The preferable technical scheme is as follows: color in color fade and color enhancement refers to a standard color wavelength range value based on the dominant color or other colors, the direction of color fade refers to the saturation vector of the hue into the standard color wavelength range value, and the direction of color enhancement refers to the saturation vector of the hue out of the standard color wavelength range value.
According to the method for realizing the light source with the protruding main color, the white light source realizing system with the protruding main color is divided into three modules: the system comprises an optical detection module, an algorithm module and a light emitting device module; the optical detection module receives detection information including, but not limited to, object luminescence spectra, object red, green, blue tristimulus values, and the like. The optical module transmits the information into the algorithm module, calculates driving information of the light emitting device, such as driving current and the like, and outputs the driving information to the light emitting device module, and the light emitting device module emits corresponding spectrums according to the driving information calculated by the algorithm module. The light-emitting device module consists of a plurality of paths of driving circuits, a plurality of paths of light-emitting modules and a single light-mixing module. The driving circuit independently drives each light-emitting module through the driving current calculated and output by the algorithm module, so that the light-emitting module emits light, and the light-emitting spectrum is fully mixed through the light-mixing module to emit light integrally. Since the current of each driving circuit is independently adjustable, the luminous intensity of each luminous module is also independently adjustable, so that the proportion of each luminous module to the whole luminous spectrum is also adjustable, and as a result, the energy distribution of the whole luminous spectrum is adjustable. Fig. 5 shows different overall emission spectra of 4 light emitting modules emitted at different drive settings.
The light emitting module in fig. 4 includes, but is not limited to, various types of colored, white LEDs, various types of current-tunable conventional light sources such as fluorescent lamps, metal halide lamps, and the like.
Fig. 6 illustrates the operation of the algorithm module. The optical detection device transmits the detected spectrum or RGB color information to an algorithm module, and the algorithm module judges the color tone of the main body in the scene according to the information. If a spectrum is input, the algorithm module may obtain hue region information of the body color according to the following method:
(1) First, calculating XYZ tristimulus values corresponding to spectra
Where S (λ) is the energy distribution of the spectrum, λ is the wavelength, in nanometers (nm),is a color matching function. The upper and lower limits of the integration are visible light wave bands: 380 nm-780 nm.
(2) Calculating color coordinates (a, b) in a color space from tristimulus values XYZ:
wherein:
xn, yn, zn are tristimulus values of the reference light source. If the D65 light source is used as the reference light source, the tristimulus value is
X n ＝95.047，
Y n ＝100.000，
Z n ＝108.883
(3) And judging which tone area the color belongs to according to the color coordinates (a, b). The tone area is divided into 16 areas in total, that is, 16 tones. Can be achieved by looking up the IES-TM30 standard, see reference [1] david, aurelian et al, development of IES method for assessing light source color reproduction, optical flash 23.12 (2015): 15888-15906.
After the hue area of the main color is obtained, the algorithm module finishes defining the main color. According to the ambient light information acquired by the optical detection module, calculating the color temperature of the ambient light, and then according to the color temperature, adopting sunlight with the same color temperature as a reference light source to acquire the spectrum of the reference light source. This process may be accomplished by solar spectrum database extraction.
Meanwhile, the algorithm module randomly generates the current of each driving circuit, thereby generating the light emission spectrum of the current target light source, see fig. 5. The algorithm module will evaluate the current spectrum to determine it as white light. This can be achieved by calculating the color deviation value Duv. If Duv is small enough, then consider the current spectrum to be white light, output; otherwise, the light spectrum is regenerated until white light is obtained.
After the light emission spectrums of the reference light source and the current target light source are obtained, calculating color coordinates (a, b) of each color sample in the IES-TM30 standard under the irradiation of the two light sources respectively. 99 color samples are defined in the IES-TM30 standard and are located within 16 color bins, respectively, so the following steps require separate, repeated calculations for the 99 color samples. First, the reflectance spectrum is calculated:
S r，i (λ)＝S(λ)R i (λ)
wherein S is r，i (lambda) is the reflection spectrum of the ith IES-TM30 color sample, S (lambda) is the reference light spectrum or the target light spectrum, R is calculated separately i (lambda) is the reflectance spectrum of the color sample in the ith IES-TM-30 standard. FIG. 6 shows the reflectance spectra of partial color samples (IES 01-IES 10) in the IES-TM-30 standard. After obtaining the reflection spectrum, the color coordinates (a, b) of the reflection spectrum are calculated, and the calculation method is described in detail above.
Table I enhanced color and enhanced ratio of various light sources
* The reinforcing factor refers to the difference between the maximum reinforcing ratio and the maximum weakening ratio
Compared with the light source matching technology, the invention has the following advantages:
1. the color enhancement of the object is large. Both artificial light sources of fig. 10 and 11 are green-enhanced but have a small amplitude. The light sources of the present invention in fig. 12-15 have a large magnitude for the standard color wavelength range and a 2-3 times enhancement factor for the other light sources.
2. The color of the reinforced object is complete. While conventional light sources and LEDs typically only provide standard color wavelength range values for green and red, the light source of the present invention may provide for enhancement of a variety of different colors, while 2 colors may be enhanced.
3. Is continuously adjustable. The method and the system can use the same equipment to strengthen different main colors, and the light source matching technology needs multiple replacement because the spectrum is not adjustable, so as to try different light sources.
Compared with the non-white light source technology, the invention has the following advantages:
1. the light source is still white, the visual comfort is high, and meanwhile, the white balance setting of electronic equipment such as cameras and video cameras is not affected. Table 2 shows the color deviation (Duv) of different light emission spectra obtained by the method of the invention under various color temperatures, and the color deviation is small compared with non-white light, which indicates that the light color of the spectra is more similar to natural white light. (Duv <0.007 is generally considered to be white light)
2. Full-automatic spectrum adjustment is realized, and a filter element or a light source does not need to be replaced.
3. The color enhancement amplitude of the object is controllable, and color effect distortion caused by excessive enhancement of the object color is avoided.
| Light source type | Absolute color deviation (Duv) |
| Sunlight | <0.0001 |
| Common fluorescent lamp | <0.007 |
| General LED | <0.007 |
| Non-white light source | >0.02 |
| The light source of the invention | <0.003 |
The embodiments of the present invention described above do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention as set forth in the appended claims.
Claims (8)
1. An LED backlight realization system for highlighting a body color, characterized in that: the system comprises an optical detection module, an algorithm module and a light emitting device module; the optical detection module receives detection information; the algorithm module calculates driving information of the light emitting device according to the information transmitted by the optical module; the light emitting device module emits corresponding spectrums according to the driving information calculated by the algorithm module; the light-emitting device module comprises a plurality of paths of driving circuits, a plurality of paths of light-emitting modules and a single light-mixing module; the driving circuit drives the light-emitting module to emit light according to the driving current calculated by the algorithm module, and then the light-emitting module fully mixes the light-emitting spectrum to enable the whole light to emit light; each path of driving current independently drives each light emitting module; the current of each driving circuit is independently adjustable, and the luminous intensity of each corresponding luminous module is also independently adjustable;
the method for realizing the LED backlight source with the main color is characterized by comprising the following steps:
step S1: the optical detection equipment transmits detection information to the algorithm module;
step S2: the algorithm module judges the information of the dominant color tone area in the scene through the detection information;
step S3: extracting a main mark color sample of the main color according to the main color tone region information;
step S4: respectively calculating a first color coordinate of the main standard color sample under a reference light source and a second color coordinate of the main standard color sample under a target light source according to the main standard color sample;
step S5: calculating a primary color saturation vector of a primary standard color sample according to the first and second color coordinates;
step S6: evaluating whether the primary color saturation vector direction is toward the color enhancement direction and evaluating whether the saturation vector of the other hue is toward the color fade direction;
step S7: if the main color saturation vector direction is towards the color enhancement direction, outputting current main target light source driving information;
step S8: if the saturation vector direction of the other hue is toward the color fade direction; outputting driving information of other tone sub-target light sources;
step S9: driving the information driving device to generate a total target spectrum according to the main target light source and the other tone auxiliary target light sources;
the step S6: evaluating whether the dominant color saturation vector direction is toward the color enhancement direction; if the color is not in the color enhancement direction, obtaining a main difference value by subtracting the magnitude of the current main color saturation vector from the main standard color wavelength range value; according to the main difference value, obtaining secondary driving information of a secondary target light source after the next iteration by optimizing iteration parameters;
according to the secondary driving information, firstly, whether the ground color sample is white light needs to be judged, and the steps are as follows:
step S31: reading whether the ground color is white light according to the information of the ground color database;
step S32: if the ground color is white light, executing the step S4;
step S33: if the under color is not white light, performing the step S31;
in the step S6, whether the saturation vector of other color tones is towards the color weakening direction is evaluated; if the color weakening direction is to be followed, obtaining a secondary difference value by subtracting the magnitude of the current other color saturation vector from the values of the wavelength ranges of other standard colors, obtaining driving information of a secondary target light source of the next iteration by optimizing iteration parameters according to the secondary difference value, and continuously executing the step S4 to calculate a second secondary color coordinate under the target light source;
color in color fade and color enhancement refers to a standard color wavelength range value based on a dominant color or other color, the color fade direction refers to the saturation vector of the hue into the standard color wavelength range value, and the color enhancement direction refers to the saturation vector of the hue out of the standard color wavelength range value;
the reference light source calculates the color temperature of the ambient light according to the ambient light information acquired by the optical detection module, and then obtains the ambient light by adopting sunlight with the same color temperature according to the color temperature.
2. The system for realizing the LED backlight with the prominent body color according to claim 1, wherein: the detection information is spectral or RGB color information.
3. The system for realizing the LED backlight with the prominent body color according to claim 1, wherein: the algorithm module judges the tone of the dominant color in the scene according to the detection information, and obtains the tone area information of the dominant color according to the spectrum of the reference light source by the following method:
firstly, calculating XYZ tristimulus values corresponding to a spectrum:
wherein the method comprises the steps ofFor the energy distribution of the spectrum, +.>Wavelength in nanometers (nm),>、/>、/>is a color matching function; the upper and lower limits of the integration are visible light wave bands: 380 nm-780 nm.
4. A system for implementing a dominant color LED backlight as set forth in claim 3, wherein: calculating color coordinates (a, b) in a color space from tristimulus values XYZ:
wherein:
，/>，/>is the tristimulus value of the reference light source.
5. The system for realizing the LED backlight with the prominent body color according to claim 2, wherein: and judging which tone area the color belongs to according to the color coordinates (a and b), and after the tone area of the main color is obtained, finishing the definition of the main color by the algorithm module.
6. A system for implementing a dominant color LED backlight as set forth in claim 3, wherein: according to the detection information obtained by the optical detection module, calculating the color temperature of the ambient light, and then according to the color temperature, adopting sunlight with the same color temperature as a reference light source to obtain the spectrum of the reference light source.
7. The system for realizing a dominant color LED backlight of claim 5, wherein: after the definition of the main color is completed, whether the spectrum of the ground color is white or not needs to be evaluated, and the color deviation value DUV is calculated; outputting if the ground color spectrum is white; if the ground color spectrum is not white, continuing to judge in the ground color database.
8. The system for realizing a dominant color LED backlight of claim 5, wherein:
after passing through the luminous spectrums of the reference light source and the current target light source, respectively calculating color coordinates (a, b) of a color sample in the IES-TM30 standard under the irradiation of the two light sources;
the reflectance spectrum is first calculated as follows:
wherein,reflection spectrum for the ith IES-TM30 color sample, +.>For reference light source spectrum or target light source spectrum, the +.>Is the reflectance spectrum of the color sample in the ith IES-TM-30 standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298518.4A CN114040539B (en) | 2021-11-05 | 2021-11-05 | Light source implementation method for highlighting main color |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298518.4A CN114040539B (en) | 2021-11-05 | 2021-11-05 | Light source implementation method for highlighting main color |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114040539A CN114040539A (en) | 2022-02-11 |
| CN114040539B true CN114040539B (en) | 2024-03-15 |
Family
ID=80142725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111298518.4A Active CN114040539B (en) | 2021-11-05 | 2021-11-05 | Light source implementation method for highlighting main color |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114040539B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012090100A (en) * | 2010-10-20 | 2012-05-10 | Kyocera Mita Corp | Image forming apparatus and image forming program |
| CN102667320A (en) * | 2009-09-24 | 2012-09-12 | 克利公司 | Lighting device with defined spectral power distribution |
| CN102858072A (en) * | 2012-09-28 | 2013-01-02 | 北京半导体照明科技促进中心 | Lighting control method and system |
| CN103108469A (en) * | 2013-01-31 | 2013-05-15 | 北京半导体照明科技促进中心 | Method and device for controlling output light of illuminating device and illuminating system |
| CN104486861A (en) * | 2014-11-12 | 2015-04-01 | 常州市武进区半导体照明应用技术研究院 | Light control method, device and system |
| CN104574371A (en) * | 2014-12-20 | 2015-04-29 | 中国科学院西安光学精密机械研究所 | Characterization calibration method for high dynamic digital color camera |
| CN104703334A (en) * | 2014-11-19 | 2015-06-10 | 常州市武进区半导体照明应用技术研究院 | Illumination control method, device and system |
| CN104933706A (en) * | 2015-05-29 | 2015-09-23 | 西安电子科技大学 | Imaging system color information calibration method |
| EP2944931A1 (en) * | 2014-05-15 | 2015-11-18 | Diehl Aerospace GmbH | Method for sorting light sources into a colour class |
| CN106304527A (en) * | 2015-06-08 | 2017-01-04 | 欧普照明股份有限公司 | A kind of Lighting Control Assembly and illumination control method |
| CN107166177A (en) * | 2017-05-23 | 2017-09-15 | 广东省半导体产业技术研究院 | A kind of adjustable LED artificial sun lights illumination system layout method of spectrum |
| CN108417695A (en) * | 2018-01-24 | 2018-08-17 | 厦门信达光电物联科技研究院有限公司 | The LED light source and preparation method thereof of one type solar spectrum |
| CN108600713A (en) * | 2018-01-24 | 2018-09-28 | 苏州佳世达光电有限公司 | A kind of method, module and the projection arrangement of dynamic detection projection arrangement chromaticity coordinates |
| CN108954042A (en) * | 2018-07-23 | 2018-12-07 | 浙江智彩科技有限公司 | A kind of synthetic method of the adjustable lighting source of a wide range of spectral accuracy |
| CN111132408A (en) * | 2020-01-09 | 2020-05-08 | 中山市晓琦智能科技有限公司 | Lamp control system and control method thereof |
| CN210723018U (en) * | 2018-03-26 | 2020-06-09 | 惠州市西顿工业发展有限公司 | LED module capable of simulating solar spectrum |
| CN112203383A (en) * | 2020-10-23 | 2021-01-08 | 深圳瑞欧光技术有限公司 | Multi-spectral LED dimming method |
| CN113498237A (en) * | 2020-03-20 | 2021-10-12 | 杭州海康威视数字技术股份有限公司 | Driving current control method and mixed light supplement control method for multispectral light supplement lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6288943B2 (en) * | 2013-05-20 | 2018-03-07 | 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． | Video display device |
-
2021
- 2021-11-05 CN CN202111298518.4A patent/CN114040539B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667320A (en) * | 2009-09-24 | 2012-09-12 | 克利公司 | Lighting device with defined spectral power distribution |
| JP2012090100A (en) * | 2010-10-20 | 2012-05-10 | Kyocera Mita Corp | Image forming apparatus and image forming program |
| CN102858072A (en) * | 2012-09-28 | 2013-01-02 | 北京半导体照明科技促进中心 | Lighting control method and system |
| CN103108469A (en) * | 2013-01-31 | 2013-05-15 | 北京半导体照明科技促进中心 | Method and device for controlling output light of illuminating device and illuminating system |
| EP2944931A1 (en) * | 2014-05-15 | 2015-11-18 | Diehl Aerospace GmbH | Method for sorting light sources into a colour class |
| CN104486861A (en) * | 2014-11-12 | 2015-04-01 | 常州市武进区半导体照明应用技术研究院 | Light control method, device and system |
| CN104703334A (en) * | 2014-11-19 | 2015-06-10 | 常州市武进区半导体照明应用技术研究院 | Illumination control method, device and system |
| CN104574371A (en) * | 2014-12-20 | 2015-04-29 | 中国科学院西安光学精密机械研究所 | Characterization calibration method for high dynamic digital color camera |
| CN104933706A (en) * | 2015-05-29 | 2015-09-23 | 西安电子科技大学 | Imaging system color information calibration method |
| CN106304527A (en) * | 2015-06-08 | 2017-01-04 | 欧普照明股份有限公司 | A kind of Lighting Control Assembly and illumination control method |
| CN107166177A (en) * | 2017-05-23 | 2017-09-15 | 广东省半导体产业技术研究院 | A kind of adjustable LED artificial sun lights illumination system layout method of spectrum |
| CN108417695A (en) * | 2018-01-24 | 2018-08-17 | 厦门信达光电物联科技研究院有限公司 | The LED light source and preparation method thereof of one type solar spectrum |
| CN108600713A (en) * | 2018-01-24 | 2018-09-28 | 苏州佳世达光电有限公司 | A kind of method, module and the projection arrangement of dynamic detection projection arrangement chromaticity coordinates |
| CN210723018U (en) * | 2018-03-26 | 2020-06-09 | 惠州市西顿工业发展有限公司 | LED module capable of simulating solar spectrum |
| CN108954042A (en) * | 2018-07-23 | 2018-12-07 | 浙江智彩科技有限公司 | A kind of synthetic method of the adjustable lighting source of a wide range of spectral accuracy |
| CN111132408A (en) * | 2020-01-09 | 2020-05-08 | 中山市晓琦智能科技有限公司 | Lamp control system and control method thereof |
| CN113498237A (en) * | 2020-03-20 | 2021-10-12 | 杭州海康威视数字技术股份有限公司 | Driving current control method and mixed light supplement control method for multispectral light supplement lamp |
| CN112203383A (en) * | 2020-10-23 | 2021-01-08 | 深圳瑞欧光技术有限公司 | Multi-spectral LED dimming method |
Non-Patent Citations (7)
| Title |
|---|
| 一种预测白光LED相关色温的新方法;陈盛雄;朱大庆;廖欣怡;;发光学报(第06期);127-134 * |
| 倪卡罗（芬兰）.纸张物理性能.2017,91-93. * |
| 廖宁放等.高等色度学.2020,30-32. * |
| 快速LED光色参数测试系统;郑晨居;单忠频;余彬海;周圣军;;半导体光电(第03期);129-132 * |
| 翟其彦,罗明.博物馆LED照明的显色质量对绘画作品的视觉影响.照明工程学报.2017,13-17. * |
| 超高显色指数和色温可调的LED白光照明光源研究;谌江波;余建华;高亚飞;张翼扬;陆秀炎;;光学学报(第10期);252-258 * |
| 高光色品质LED照明光源研究;赖传杜;庄其仁;胡奕彬;刘士伟;;激光与光电子学进展(第06期);249-257 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114040539A (en) | 2022-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103299719B (en) | Lighting method and light-emitting device | |
| US6379022B1 (en) | Auxiliary illuminating device having adjustable color temperature | |
| Davis et al. | Toward an improved color rendering metric | |
| US7744242B2 (en) | Spotlight for shooting films and videos | |
| CN105723146B (en) | The white light that spectrum for better visual acuity enhances | |
| US8064057B2 (en) | Colour assessment apparatus and method | |
| EP0686997A2 (en) | Discharge lamp and illumination instrument for general illumination | |
| CN103299718A (en) | Lighting method and light-emitting device | |
| Bodrogi et al. | Why does the CIE colour rendering index fail for white RGB LED light sources? | |
| EP2731408A1 (en) | Control apparatus and illumination apparatus | |
| CN104748848B (en) | LED-based intelligent color assessment cabinet | |
| JP2009048989A (en) | Illumination apparatus | |
| JP6126103B2 (en) | Illumination method and light emitting device | |
| US10103293B2 (en) | Tuned light emitting devices | |
| US10034345B1 (en) | Lighting apparatus | |
| JPH11258047A (en) | Color rendering property evaluating method of illuminating lamp | |
| US5033857A (en) | Method of transforming light-source color data and non-luminous object color data | |
| CN113989403A (en) | LED backlight source implementation method capable of highlighting body color | |
| CN114040539B (en) | Light source implementation method for highlighting main color | |
| CN104703334B (en) | The method of Lighting control, apparatus and system | |
| JP6157173B2 (en) | Spectral distribution design method for LED lighting | |
| Tanaka et al. | Color control of a lighting system using RGBW LEDs | |
| JP6652785B2 (en) | LED lighting spectral distribution design method | |
| US20200240918A1 (en) | Microscopy system and method for operating a microscopy system | |
| Miller et al. | NIST spectrally tunable lighting facility for color rendering and lighting experiments |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20231211 Address after: 518000, 2nd to 4th floors, Building 21, Jiuwo Longjun Industrial Zone, Longping Community Department, Dalang Street, Longhua District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Aitushi Innovation Technology Co.,Ltd. Address before: 518000 room 113, building 2, Tianxin Industrial Zone, guxing community, Xixiang street, Bao'an District, Shenzhen, Guangdong Province Applicant before: SHENZHNE CHROMATECH LIGHTING TECHNOLOGY CO.,LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |