CN109029728B - Evaluation method and device for synthetic spectrum - Google Patents
Evaluation method and device for synthetic spectrum Download PDFInfo
- Publication number
- CN109029728B CN109029728B CN201810780128.2A CN201810780128A CN109029728B CN 109029728 B CN109029728 B CN 109029728B CN 201810780128 A CN201810780128 A CN 201810780128A CN 109029728 B CN109029728 B CN 109029728B
- Authority
- CN
- China
- Prior art keywords
- color
- spectrum
- synthesized spectrum
- synthesized
- tolerance
- 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
- 238000001228 spectrum Methods 0.000 title claims abstract description 149
- 238000011156 evaluation Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 4
- 230000005622 photoelectricity Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The embodiment of the invention discloses a synthetic spectrum evaluation method and device, relates to the technical field of photoelectricity, and provides a novel synthetic spectrum evaluation method which can realize evaluation of synthetic spectra. The method comprises the following steps: acquiring a synthetic spectrum; calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum; and substituting the color tolerance of the synthesized spectrum into a synthesized spectrum color tolerance scoring curve to calculate the score of the color tolerance of the synthesized spectrum.
Description
Technical Field
The embodiment of the invention relates to the technical field of photoelectricity, in particular to a method and a device for evaluating a synthesized spectrum.
Background
The use of light is an important application of the human civilization society, and as technology advances, different kinds of light sources are gradually developed, such as conventional incandescent (incandescent) lamps, fluorescent (fluorescent) lamps, and inert gas (inert gas) lamps. Currently, the latest lighting technology is solid-state lighting (SSL) technology, and light-emitting diodes (LEDs), organic light-Emitting Semiconductors (OLEDs) and polymer light-emitting diodes (PLEDs) are all products of the SSL technology. How to evaluate the spectrum generated by the light source adopting the above-mentioned illumination technology and further develop a high-quality light source is an important subject of research and development personnel.
Disclosure of Invention
Embodiments of the present invention provide a method and an apparatus for evaluating a synthesized spectrum, and provide a novel method for evaluating a synthesized spectrum, which can evaluate a synthesized spectrum.
In a first aspect, a method for evaluating a synthesized spectrum is provided, including:
acquiring a synthetic spectrum;
calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum;
and substituting the color tolerance of the synthesized spectrum into a synthesized spectrum color tolerance scoring curve to calculate the score of the color tolerance of the synthesized spectrum.
Optionally, the method further includes:
and performing curve fitting on a first score corresponding to the color tolerance value zero and a second score corresponding to the color tolerance value 7SDCM to generate the synthesized spectrum color tolerance score curve.
Optionally, calculating a color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum; the method comprises the following steps:
according to the formula g11Δx2+2g12ΔxΔy+g22Δy2＝K2Color tolerances of the synthesized spectrum are calculated, where Δ x, Δ y represent errors of the center color coordinates of the synthesized spectrum from the center color coordinates of the standard spectrum, g11, g12, g22 represent coefficients determined by respective target coordinate values, and K is the color tolerance.
Optionally, the color tolerance score curve of the synthesized spectrum is: pSDCM- α × SDCM +100, said, PSDCMIs the score of the color tolerance of the synthesized spectrum, SDCM is the color tolerance of the synthesized spectrum, and α is a constant.
In a second aspect, there is provided an apparatus for evaluating a synthesized spectrum, comprising:
an acquisition unit configured to acquire a synthesized spectrum;
the processing unit is used for calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum acquired by the acquisition unit and the central color coordinate of the standard spectrum;
and the processing unit is also used for substituting the color tolerance of the synthesized spectrum into a synthesized spectrum color tolerance scoring curve to calculate the score of the color tolerance of the synthesized spectrum.
Optionally, the processing unit is configured to perform curve fitting on a first score corresponding to the color tolerance value zero and a second score corresponding to the color tolerance value 7SDCM, so as to generate the synthesized spectrum color tolerance score curve.
Optionally, the processing unit is specifically configured to perform processing according to a formula g11Δx2+2g12ΔxΔy+g22Δy2＝K2Color tolerances of the synthesized spectrum are calculated, where Δ x, Δ y represent errors of the center color coordinates of the synthesized spectrum from the center color coordinates of the standard spectrum, g11, g12, g22 represent coefficients determined by respective target coordinate values, and K is the color tolerance.
Alternatively to this, the first and second parts may,the color tolerance scoring curve of the synthesized spectrum is as follows: pSDCM- α × SDCM +100, said, PSDCMIs the score of the color tolerance of the synthesized spectrum, SDCM is the color tolerance of the synthesized spectrum, and α is a constant.
In the above aspect, the evaluation device of the synthesized spectrum may be capable of acquiring the synthesized spectrum; calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum; the color tolerance of the synthesized spectrum is substituted into the color tolerance score curve of the synthesized spectrum to calculate the score of the color tolerance of the synthesized spectrum. The scheme provides a novel evaluation method of the synthetic spectrum, and the evaluation of the synthetic spectrum can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for evaluating a synthesized spectrum according to an embodiment of the present invention;
fig. 2 is a block diagram of an evaluation apparatus for a synthesized spectrum according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for evaluating a synthesized spectrum, which is shown in fig. 1 and includes:
101. and acquiring a synthesized spectrum.
In step 101, the composite spectrum emitted from the light source may be detected at a specific position by an optical sensor to obtain the composite spectrum.
102. And calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum.
Wherein the color tolerance is used to evaluate the chromaticity difference between the color point of the synthesized spectrum and the color point of the standard spectrum, and thus the color tolerance of the synthesized spectrum can be calculated from the center color coordinate of the synthesized spectrum and the center color coordinate of the standard spectrum; the specific formula is given by IEC 60081:
g11Δx2+2g12ΔxΔy+g22Δy2＝K2Δ x and Δ y represent errors between the center color coordinates of the synthesized spectrum and the center color coordinates of the standard spectrum, g11, g12, and g22 represent coefficients determined by the target coordinate values, and K represents a color tolerance.
The central color coordinates of the color temperatures of the european standard and the american standard are shown in tables 1 and 2, where table 1 is the central color coordinates of the color temperatures conforming to the Solid State Lighting (SSL) product specification and the vertex color coordinates of the tolerance quadrangle of the central color coordinates. Table 2 shows the correspondence between the color temperature category and the color temperature and the center color coordinate, where F denotes the value and the annex D of IEC60081, and P denotes the value close to the planckian locus (planckian curve). Wherein Center point refers to the Center color coordinate, and Tolerance quadrirange refers to the vertex of the Tolerance Quadrangle of the Center color coordinate. Colourarking refers to the color class, CCT (Tc) refers to the color temperature, and Chromaticity coordinates refer to the color coordinates (Chromaticity coordinates).
TABLE 1
TABLE 2
103. The color tolerance of the synthesized spectrum is substituted into the color tolerance score curve of the synthesized spectrum to calculate the score of the color tolerance of the synthesized spectrum.
PSDCM＝-α×SDCM+100，PSDCMfor the color tolerance of the synthesized spectrum, SDCM (standard definition of color matching) is the color tolerance of the synthesized spectrum, and α is a constant.
Wherein the color specification in the U.S. standard is compiled by ANSI, and the defined tolerance quadrilateral overlaps with a 7-step MacAdam ellipse (conforming to the current energy star lighting standard) and thus has the same nominal CCT as the energy star fluorescent lamp. The euro standard uses a 5SDCM macadam ellipse to evaluate color accuracy. The national standard GB/T24823 uses the judgment standard of 7SDCM macadam ellipse for the regulation of chromaticity tolerance. Thus, if the ideal case of the synthesized spectrum has a color tolerance of 0, the synthesized spectrum is set to a first score (e.g., 100), and if the color tolerance is 7SDCM, the synthesized spectrum is set to a second score (e.g., 60), and a linear fit is performed, the evaluation of the color tolerance of the synthesized spectrum can be found as: pSDCM-5.714 × SDCM + 100. When calculating the SDCM, the European standard and the American standard need to be distinguished.
In the above aspect, the evaluation device of the synthesized spectrum may be capable of acquiring the synthesized spectrum; calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum; the color tolerance of the synthesized spectrum is substituted into the color tolerance score curve of the synthesized spectrum to calculate the score of the color tolerance of the synthesized spectrum. The scheme provides a novel evaluation method of the synthetic spectrum, and the evaluation of the synthetic spectrum can be realized.
Referring to fig. 2, an evaluation apparatus for a synthesized spectrum is provided, which is applied to implement the above method embodiment, and includes:
an acquisition unit 21 for acquiring a synthesized spectrum;
a processing unit 22, configured to calculate a color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum acquired by the acquiring unit 21 and the central color coordinate of the standard spectrum;
the processing unit 22 is further configured to calculate a score of the color tolerance of the synthesized spectrum by substituting the color tolerance of the synthesized spectrum into a synthesized spectrum color tolerance score curve.
In an exemplary scheme, the processing unit 22 is configured to perform curve fitting on a first score corresponding to the color tolerance value zero and a second score corresponding to the color tolerance value 7SDCM, so as to generate the synthesized spectrum color tolerance score curve.
In an exemplary aspect, the color temperature tolerance is:
ΔT＝1.1900×10-8×TF 3-1.5434×10-4×TF 2+0.7168×TF-902.55, wherein TFIs the color temperature of the standard spectrum.
In an exemplary embodiment, the processing unit 22 is specifically configured to perform the processing according to the formula g11Δx2+2g12ΔxΔy+g22Δy2＝K2Color tolerances of the synthesized spectrum are calculated, where Δ x, Δ y represent errors of the center color coordinates of the synthesized spectrum from the center color coordinates of the standard spectrum, g11, g12, g22 represent coefficients determined by respective target coordinate values, and K is the color tolerance.
In one exemplary approach, the synthetic spectral color tolerance score curve is: pSDCM- α × SDCM +100, said, PSDCMIs the score of the color tolerance of the synthesized spectrum, SDCM is the color tolerance of the synthesized spectrum, and α is a constant.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and the function thereof is not described herein again.
The acquiring unit 21 and the processing unit 22 may be processors individually installed on the controller or physical functional units integrated on a certain processor, or may be stored in a memory of the controller in the form of program codes, and the functions of the above units may be called and executed by a certain processor of the controller. The processor described herein may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present Application.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Additionally, a computer-readable medium (or media) is also provided, comprising computer-readable instructions that when executed perform the operations of the method in the above-described embodiments.
Additionally, a computer program product is also provided, comprising the above-described computer-readable medium (or media).
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (4)
1. A method for evaluating a synthesized spectrum, comprising:
acquiring a synthetic spectrum;
calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum;
substituting the color tolerance of the synthesized spectrum into a synthesized spectrum color tolerance score curve to calculate the score of the color tolerance of the synthesized spectrum;
performing curve fitting on a first score corresponding to the color tolerance value zero and a second score corresponding to the color tolerance value 7SDCM to generate a synthesized spectrum color tolerance score curve;
the color tolerance scoring curve of the synthesized spectrum is as follows: pSDCM- α × SDCM +100, said PSDCMIs the score of the color tolerance of the synthesized spectrum, SDCM is the color tolerance of the synthesized spectrum, and α is a constant.
2. The method of evaluating a synthesized spectrum according to claim 1, wherein the color tolerance of the synthesized spectrum is calculated from the central color coordinate of the synthesized spectrum and the central color coordinate of the standard spectrum; the method comprises the following steps:
according to the formula g11Δx2+2g12ΔxΔy+g22Δy2＝K2Color tolerances of the synthesized spectrum are calculated, where Δ x, Δ y represent errors of the center color coordinates of the synthesized spectrum from the center color coordinates of the standard spectrum, g11, g12, g22 represent coefficients determined by respective target coordinate values, and K is the color tolerance.
3. An apparatus for evaluating a synthesized spectrum, comprising:
an acquisition unit configured to acquire a synthesized spectrum;
the processing unit is used for calculating the color tolerance of the synthesized spectrum according to the central color coordinate of the synthesized spectrum acquired by the acquisition unit and the central color coordinate of the standard spectrum;
the processing unit is further configured to bring the color tolerance of the synthesized spectrum into a synthesized spectrum color tolerance score curve to calculate a score of the color tolerance of the synthesized spectrum, where the synthesized spectrum color tolerance score curve is: pSDCM- α × SDCM +100, said PSDCM(ii) is a score of the color tolerance of the synthesized spectrum, SDCM is the color tolerance of the synthesized spectrum, and α is a constant;
and the processing unit is used for performing curve fitting on a first score corresponding to the color tolerance value zero and a second score corresponding to the color tolerance value 7SDCM to generate the synthesized spectrum color tolerance score curve.
4. Evaluation device of a composite spectrum according to claim 3, characterized in that the processing unit is in particular adapted to evaluate the composite spectrum according to the formula g11Δx2+2g12ΔxΔy+g22Δy2＝K2Color tolerances of the synthesized spectrum are calculated, where Δ x, Δ y represent errors of the center color coordinates of the synthesized spectrum from the center color coordinates of the standard spectrum, g11, g12, g22 represent coefficients determined by respective target coordinate values, and K is the color tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810780128.2A CN109029728B (en) | 2018-07-16 | 2018-07-16 | Evaluation method and device for synthetic spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810780128.2A CN109029728B (en) | 2018-07-16 | 2018-07-16 | Evaluation method and device for synthetic spectrum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109029728A CN109029728A (en) | 2018-12-18 |
| CN109029728B true CN109029728B (en) | 2020-11-20 |
Family
ID=64643309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810780128.2A Active CN109029728B (en) | 2018-07-16 | 2018-07-16 | Evaluation method and device for synthetic spectrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109029728B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109673082B (en) * | 2018-12-26 | 2020-05-05 | 中国科学技术大学 | Spectrum, color and color temperature control method of LED lighting system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738077B (en) * | 2015-11-30 | 2018-08-10 | 肇庆市立得电子有限公司 | A kind of the standard formulation method and test method of any light source color tolerance |
-
2018
- 2018-07-16 CN CN201810780128.2A patent/CN109029728B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109029728A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2638780B1 (en) | System and method for color creation and matching | |
| US8723450B2 (en) | System and method for controlling the spectral content of an output of a light fixture | |
| Chang et al. | Anomaly detection of light-emitting diodes using the similarity-based metric test | |
| US9713222B2 (en) | System and method for controlling a plurality of light fixture outputs | |
| EP2664218A1 (en) | Systems and methods for controlling an output of a light fixture | |
| KR102357240B1 (en) | Systems and methods for testing and characterizing LED lighting devices | |
| CN109029728B (en) | Evaluation method and device for synthetic spectrum | |
| CN105606230A (en) | Method and system for accurately obtaining correlation color temperature of light source | |
| CN109034581B (en) | Evaluation method and device for synthetic spectrum | |
| US20230109630A1 (en) | Lifetime color stabilization of color-shifting artificial light sources | |
| CN115720727B (en) | Control design for perceptually uniform color adjustment | |
| CN108917932B (en) | Evaluation method and device for synthetic spectrum | |
| US9147240B2 (en) | Method and system for controlling color characteristics of one or more illumination devices | |
| CN109146243B (en) | Evaluation method and device for synthetic spectrum | |
| US20210092811A1 (en) | Control design for perceptually uniform color tuning | |
| US20170325298A1 (en) | Light brightness and color temperature control unit | |
| CN109587893B (en) | Dimming method and device | |
| Chies et al. | Design space for LED systems considering photoelectrothermal aspects | |
| US8531668B2 (en) | Method for the binning of radiation-emitting, optoelectronic semiconductor components | |
| EP3090203A1 (en) | Method and apparatus for uniform illumination of a surface | |
| WO2018042283A1 (en) | A method of controlling lighting sources, corresponding system and computer program product |
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 | ||
| CB02 | Change of applicant information |
Address after: 315300 Guanhaiwei Town Industrial Park, Cixi City, Ningbo City, Zhejiang Province, 258 Guanfu South Road, West District Applicant after: NINGBO BULL OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: Cixi City, Zhejiang province made Kuanyan Town Village 315333 Ningbo City Applicant before: NINGBO BULL OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |