CN103389199B - A kind of calibration steps for colour gamut and color domain coverage ratio - Google Patents
A kind of calibration steps for colour gamut and color domain coverage ratio Download PDFInfo
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Abstract
The invention provides a kind of calibration steps for colour gamut and color domain coverage ratio, it comprises control center, wherein, described calibrating installation also comprises integrating sphere light source, the filter wheel that can rotate and color analyzer, described integrating sphere light source, described color analyzer all communicate to connect with described control center, and the light that described integrating sphere light source sends enters described color analyzer through described filter wheel.With the frame mode of integrating sphere light source, the filter wheel that can rotate and color analyzer, output light is carried out to the synchronous calibration of colour gamut and color domain coverage ratio, the delivery outlet of integrating sphere light source will do the special processing of shading, eliminate the impact of parasitic light on color analyzer measurement result, make the monochromaticity of output light, saturation degree is improved, improve the calibration accuracy of color domain and color domain coverage ratio, stability and repeatability.
Description
Technical field
The present invention relates to the field that color domain and color domain coverage ratio thereof carry out processing, particularly relate to a kind of calibration steps for colour gamut and color domain coverage ratio.
Background technology
At present, what the domestic method measured color analyzer color domain coverage ratio adopted is by directly calculating after the chromaticity coordinates on measurement colour triangle summit, and color analyzer is only calibrated chromaticity coordinates, color domain coverage rate is not directly traced to the source.When calibrating color analyzer chromaticity coordinates, the chromaticity coordinates of usual selection standard A light source is calibrated, and the calibration of color domain coverage rate does not have good adaptability.Also have in prior art and some improvement have been carried out to the continuous ager of large gamut range, but this kind of device due to degree of freedom higher, the uncertainty introduced is very large, and cannot meet the requirement as measurement standard in stability and repeatability, can not meet current demand.
The color domain coverage ratio test macro based on color analyzer can be configured in the manufacturer of some flat-panel monitors and televisor, but be also in a space state in the calibration of color analyzer color domain coverage ratio.The chromaticity coordinates that producer generally can measure color analyzer directly calculates the value of color domain coverage ratio, but the measured value that this method obtains is not through what strictly trace to the source, can not guarantee its accuracy.The domestic calibration to color analyzer chromaticity coordinates at present adopts the mode of standard sources single-point calibration more.The schematic diagram calibrated test and the color analyzer chromaticity coordinates of display color gamut coverage rate as shown in Figures 1 and 2, also have and utilize uniform source of light to coordinate primary colours color filter, complementary color color filter and colo(u)r mixer to produce the device of the light source of higher color domain coverage ratio, as shown in Figure 3, have employed two groups of color filters and two groups of integrating sphere light sources, by the size regulating two groups of light to inject luminous flux, and then after adjustment colour mixture, export the chromaticity coordinates of light, thus reach the object of large gamut range output.But which employs many group integrating sphere light sources and color filter, and by regulating the ratio of luminous flux to reach the large gamut range exporting light, cause chromaticity coordinates light source being exported to light to introduce a large amount of uncertain factor, repeatability, stability cannot meet the condition used as measurement standard.Also have and adopt laser instrument as monochromatic source, laser has the advantages such as stability, monochromaticity are good, but due to the selectable output wavelength of laser instrument limited, and cost is higher, is not suitable for calibrating field widespread adoption in colour gamut.
Therefore, prior art needs further improvement and develops.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of calibration steps for colour gamut and color domain coverage ratio, to improve the calibration accuracy of color domain and color domain coverage ratio, stability and repeatability.
For solving the problems of the technologies described above, technical solution of the present invention comprises:
A kind of calibrating installation for colour gamut and color domain coverage ratio, it comprises control center, wherein, described calibrating installation also comprises integrating sphere light source, the filter wheel that can rotate and color analyzer, described integrating sphere light source, described color analyzer all communicate to connect with described control center, and the light that described integrating sphere light source sends enters described color analyzer through described filter wheel.
Described calibrating installation, wherein, corresponding optical filter and the described color analyzer of described integrating sphere light source, described filter wheel are positioned at same straight line.
Described calibrating installation, wherein, is provided with at least one narrow band pass filter, a neutral colour filter and a polarizing filter wheel week of described filter wheel; Narrow band pass filter coordinates neutral colour filter and polarizer group and use.
Described calibrating installation, wherein, the light exit wound of bullet of described integrating sphere light source is provided with one for preventing the cone of interference of stray light, and the light penetrated from described cone enters described color analyzer through described filter wheel.
For a calibration steps for colour gamut and color domain coverage ratio, it comprises the following steps:
Control center controls integrating sphere light source and produces light, the chromaticity coordinates that the light that described integrating sphere light source sends exports after halo after filtration covers on the gamut boundary of standard chromatic diagram, chromaticity coordinates is obtained after described color analyzer is measured, rotate filter wheel and export different chromaticity coordinatess to described color analyzer, described color analyzer is measured multiple output light and is obtained corresponding chromaticity coordinates, calculate all chromaticity coordinatess and surround polygonal area, obtain color domain coverage ratio according to corresponding formula.
Described calibration steps, wherein, concrete the comprising of above-mentioned steps: the light that described integrating sphere light source sends is through cone process.
Described calibration steps, wherein, concrete the comprising of above-mentioned steps: described corresponding formula is: C
p=(A/0.1952) × 100%, wherein A is described area, described C
pfor described color domain coverage ratio.
A kind of calibration steps for colour gamut and color domain coverage ratio provided by the invention, adopt integrating sphere light source, the filter wheel that can rotate and the frame mode of color analyzer, colour gamut and color domain coverage ratio synchronous calibration are carried out to output light, the delivery outlet of integrating sphere light source will do the special processing of shading, eliminate the impact of parasitic light on color analyzer measurement result, make the monochromaticity of output light, saturation degree is improved, the present invention can provide large colour gamut, high stability and the adjustable monochromatic light of brightness, the calibration requirements of color analyzer colour gamut and color domain coverage ratio can be met, wherein brightness regulation scope (0.01 ~ 30000) cd/m of canonical product bulb separation light source
2, monochromatic full widths at half maximum can reach 1nm, and color domain coverage ratio can reach more than 90%, improves the calibration accuracy of color domain and color domain coverage ratio, stability and repeatability.
Accompanying drawing explanation
Fig. 1 is the principle schematic of display color gamut coverage rate test in prior art;
Fig. 2 is the principle schematic of color analyzer chromaticity coordinates calibration in prior art;
Fig. 3 is the principle schematic of the continuous color modulating light source of large gamut range in prior art;
Fig. 4 is the structural representation of alignment device of the present invention;
Fig. 5 is the schematic diagram of color domain coverage ratio in the present invention;
Fig. 6 is the structural representation of integrating sphere light source, cone and filter wheel in the present invention;
Fig. 7 is the structural representation of filter wheel in the present invention.
Embodiment
The invention provides a kind of calibration steps for colour gamut and color domain coverage ratio, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of calibrating installation for colour gamut and color domain coverage ratio, as shown in Fig. 4 and Fig. 6, it comprises control center 1, and described control center can adopt the technology type such as computing machine, microprocessor.Filter wheel 3 and color analyzer 4 that described calibrating installation also comprises integrating sphere light source 2, can rotate, described integrating sphere light source 2, described color analyzer 4 all communicate to connect with described control center 1, the light that described integrating sphere light source 2 sends enters described color analyzer 4 through described filter wheel 3, and described control center 1 controls described calibrating installation and runs.
Further, corresponding optical filter 6 and the described color analyzer 4 of described integrating sphere light source 2, described filter wheel 3 are positioned at same straight line, and this kind of mode, to the colour gamut of light and color domain coverage ratio calibration best results, can certainly adopt other suitable arrangements.
In another preferred embodiment of the present invention, as shown in Figure 7, the wheel week of described filter wheel 3 is provided with at least one narrow band pass filter, a neutral colour filter and a polarizing filter, accommodation can certainly be carried out according to the number of actual conditions to corresponding optical filter 6, in order to make the adjustable color domain coverage ratio of colour gamut light source as far as possible large, namely the chromaticity coordinates of light is exported as far as possible near gamut boundary, narrow band pass filter is needed to coordinate neutral colour filter and polarizer group and use, the monochromaticity of output light can be made by this method, saturation degree improves, so just reach the object improving device color domain coverage ratio range calibration scope, the calibration effect of calibrating installation is made to reach best.
Further, as shown in Figure 6, the light exit wound of bullet of described integrating sphere light source 2 is provided with one for preventing the cone 5 of interference of stray light, and the light penetrated from described cone 5 enters described color analyzer 4 through described filter wheel 3.Make described integrating sphere light source 2 that stable standard sources can be provided to export, between described integrating sphere light source 2 and described filter wheel 3, cone is set, ensure that light that described integrating sphere light source 2 exports is all via optical filter 6 outgoing of described filter wheel 3, eliminates the impact of parasitic light on color analyzer measurement result.
Present invention also offers a kind of calibration steps for colour gamut and color domain coverage ratio, it comprises the following steps:
Control center controls integrating sphere light source and produces light, the chromaticity coordinates that the light that described integrating sphere light source sends exports after halo after filtration covers on the gamut boundary of standard chromatic diagram, obtain chromaticity coordinates x, y, rotate filter wheel and export different chromaticity coordinatess to described color analyzer, described color analyzer is measured multiple output light and is obtained corresponding chromaticity coordinates, calculate all chromaticity coordinatess and surround polygonal area A, obtain color domain coverage ratio according to corresponding formula.
Further, concrete the comprising of above-mentioned steps: the light that described integrating sphere light source sends is through cone process.As shown in Figure 5, described corresponding formula is: C
p=(A/0.1952) × 100%, wherein A is described area, described C
pfor described color domain coverage ratio.
Certainly; more than illustrate and be only preferred embodiment of the present invention; the present invention is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this instructions; made all equivalently to substitute, obvious form of distortion, within the essential scope all dropping on this instructions, protection of the present invention ought to be subject to.
Claims (1)
1. the calibration steps for colour gamut and color domain coverage ratio, it comprises calibrating installation, it comprises control center, described calibrating installation also comprises integrating sphere light source, the filter wheel that can rotate and color analyzer, described integrating sphere light source, described color analyzer all communicate to connect with described control center, and the light that described integrating sphere light source sends enters described color analyzer through described filter wheel;
Corresponding optical filter and the described color analyzer of described integrating sphere light source, described filter wheel are positioned at same straight line;
Be provided with at least one narrow band pass filter, a neutral colour filter and a polarizing filter wheel week of described filter wheel, narrow band pass filter coordinates neutral colour filter and polarizer group and use;
The light exit wound of bullet of described integrating sphere light source is provided with one for preventing the cone of interference of stray light, and the light penetrated from described cone enters described color analyzer through described filter wheel;
It comprises the following steps:
Control center controls integrating sphere light source and produces light, the chromaticity coordinates that the light that described integrating sphere light source sends exports after halo after filtration covers on the gamut boundary of standard chromatic diagram, chromaticity coordinates is obtained after described color analyzer is measured, rotate filter wheel and export different chromaticity coordinatess to described color analyzer, described color analyzer is measured multiple output light and is obtained corresponding chromaticity coordinates, calculate all chromaticity coordinatess and surround polygonal area, obtain color domain coverage ratio according to corresponding formula;
Concrete the comprising of above-mentioned steps: the light that described integrating sphere light source sends is through cone process;
Concrete the comprising of above-mentioned steps: described corresponding formula is: C
p=(A/0.1952) × 100%, wherein A is described area, described C
pfor described color domain coverage ratio.
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| CN111837024A (en) * | 2018-01-17 | 2020-10-27 | 动力专家有限公司 | Image analysis process and system |
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| CN103781253B (en) * | 2014-01-23 | 2015-08-26 | 安徽理工大学 | A kind of method and apparatus controlling wideband light source stabilized intensity |
| CN104482509B (en) * | 2015-01-04 | 2018-07-17 | 安徽华夏显示技术股份有限公司 | A kind of combined LED dimming light source fixing tool |
| CN105357521B (en) * | 2015-11-04 | 2017-07-18 | 广东威创视讯科技股份有限公司 | A kind of method and relevant device for measuring color domain coverage ratio |
| CN106604025B (en) * | 2016-12-15 | 2018-07-10 | 广东威创视讯科技股份有限公司 | The measuring method and device of multiple bases color domain coverage ratio |
| CN108318137B (en) * | 2017-01-16 | 2021-09-17 | 台湾超微光学股份有限公司 | Spectrum measuring system, spectrum measuring device, optical measuring method and optical correction method |
| JP6919339B2 (en) * | 2017-05-31 | 2021-08-18 | コニカミノルタ株式会社 | Two-dimensional colorimeter |
| CN111381427A (en) * | 2018-12-29 | 2020-07-07 | 深圳光峰科技股份有限公司 | Light source system, display device and light source control method |
| CN113205765A (en) * | 2020-12-10 | 2021-08-03 | 深圳市洲明科技股份有限公司 | Display screen color gamut adjusting method and device |
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