CN101383138B - Color regulating method, system and display - Google Patents
Color regulating method, system and display Download PDFInfo
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- CN101383138B CN101383138B CN2008102163417A CN200810216341A CN101383138B CN 101383138 B CN101383138 B CN 101383138B CN 2008102163417 A CN2008102163417 A CN 2008102163417A CN 200810216341 A CN200810216341 A CN 200810216341A CN 101383138 B CN101383138 B CN 101383138B
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Abstract
The invention relates to a color conditioning method which is suitable for the field of video, and comprises the following steps: color brightness is detected; if the color brightness changes, color saturation is conditioned according to the color brightness before and after change. Compared with the prior art, when a user inputs contrast and brightness, a system of the invention automatically conditions saturation to be matched with the input contrast and the brightness through a pure software method so as to effectively avoid picture distortion phenomena brought by the mutual mismatch of the contrast, the lightness and the saturation which are respectively conditioned by the user. In addition, because the three elements of colors are systematically conditioned, the system can display the truest color effect.
Description
Technical field
The invention belongs to video field, relate in particular to a kind of method, system and display of color adjustment.
Background technology
The general color that adopts these three physical quantitys of lightness, form and aspect and saturation degree that are referred to as the color three elements to measure object color or coloured light of people.So-called lightness is the parameter of expression color shade degree, it is relevant with the length of the energy of coloured light and wavelength, particularly, the light reflectivity of a body surface is big more, stimulation degree to vision is big more, look just bright more, the lightness of corresponding color is just high more, so lightness plays critical effect to the structure of color.Lightness can not rely on other character and individualism in the color three elements, its size is weighed with gradation test card: in achromatization, the look that lightness is the highest is a white 10, and the look that lightness is minimum is a black 0, middle 9 the grey color systems uniformly-spaced arranging that exist from bright to dark.So-called form and aspect generically are interpreted as " foreign minister " of color, be object under the rayed of different wave length, the different color that human eye is felt.Form and aspect are primary features of color, and any visible object of objective world all has form and aspect, and it is the most accurate standard of the various different colors of difference.And saturation degree is meant the bright-coloured degree that adopts the numeric representation color, and saturation dimension depends on the ratio that contains colour content and colour killing composition (grey) in a kind of color, and it is big more to contain colour content, and saturation degree is big more; Otherwise the colour killing composition is big more, and saturation degree is more little.
Relation between the color three elements can adopt as shown in Figure 1 form and aspect, saturation degree and lightness, and (HueSaturationValue, HSV) color model is represented.In the hsv color model, the circular cone end face is a hue circle that color system is arranged that saturation degree is the highest, and H changes in the counterclockwise direction.Form and aspect are divided 360 °, and redness is 0 °, from 0 ° to 360 °, and 1 ° of angle of every conversion, form and aspect just have trickle variation, and the order that form and aspect change is red, orange, yellow, green, blue and pinkish red, and every kind of color is separated by 60 °, and these 6 kinds of colors constitute hexagonal 6 summits.From 0 ° to 359 °, form and aspect are arranged in order by the spectrum colour band, when arriving 360 °, and the color when form and aspect are got back to 0 ° again.S is 0 when color is positioned at circular cone end face center, is pure white, and the variation of S is increased gradually by mind-set end face housing in the circular cone end face, is positioned at the S maximum on the circular cone end face housing.The V of vertical direction is the color of achromatization system, and the lightness of its Show Color changes.Uppermost colour brilliance is the highest, and the top of vertical center axis is pure white, overlaps with the color that color system is arranged of S=0, and the nethermost colour brilliance of vertical center axis is minimum, is ater, and the lightness of color weakens from top to bottom successively.
Can analyze from the HSV colour model, chroma is difference owing to the difference of form and aspect, and even identical form and aspect, because the difference of lightness, chroma also can change thereupon.Mix white light in the color light of a certain tone, its saturation degree is descended, the white light that mixes is many more, and its saturation degree is just low more.Such as blue, when sneaking into white, though lightness has improved, its saturation degree also decreases, and becomes light blue.
The video product of present TV and so on all can have options such as brightness, contrast, tone, saturation degree to adjust for the user, wherein, and the lightness in brightness, the corresponding color three elements of contrast, the bright-dark degree that is used to regulate color.In the practical operation, brightness, contrast and saturation degree are several options of regulating through regular meeting, yet, only professional consumer, the capital that most users understand the color principle is fewer, therefore, when regulating image quality, felt bright or dark just gone to regulate brightness, contrast; Perceived color is improper just goes to regulate saturation degree, seldom can or can systematically regulate brightness, contrast and saturation degree, and so, effect can not reach optimum condition naturally.For example, saturation degree is constant, and after the increase brightness, color can be thin out, and image is bright-coloured inadequately; Otherwise, reduce brightness and then make the image color supersaturation, the image color distortion, the color noise appears in the edge, and picture lacks level.As Fig. 4, as can be seen from the figure brightness is to the influence of the colour of skin, and the subgraph A among Fig. 4 is more satisfactory colour of skin effect, after the user has reduced brightness, presents the effect of subgraph B, and color is dark partially; And after the raising brightness, what present is the effect of subgraph C, and color is thin out, and the colour of skin is turned white.Fig. 5 is that as can be seen from the figure, after brightness reduced, colored noise appearred in the image border about the example of brightness variation to the influence of edge details and images level, and saturation degree is more saturated than higher local look district color; After improving colour, image turns white, and color is bright-coloured inadequately.As can be seen, color of image can be subjected to very big influence after adjusting brightness, the contrast from the comparison of Fig. 4 and Fig. 5 subgraph separately.
Video product manufacturer is in order to address the above problem, also adopt some additive methods, for example, regulated brightness, contrast and saturation degree in advance, a few cover image models such as soft, bright-coloured, beautiful, standard are set select, allow Presentation Function be issued to optimum efficiency in some specific environment for users.Yet the selection of this method is limited after all, and many times the user still needs own manual adjustments brightness, contrast and saturation degree in the hope of satisfying the optimal visibility effect of oneself, so, can produce problem as mentioned before again.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of color conditioning method, is intended to solve prior art and can only makes the user regulate color three elements in the video product separately, can not be simultaneously and system regulate the color three elements, thereby reach the problem of preferable visual effect.
The embodiment of the invention is achieved in that a kind of color conditioning method, said method comprising the steps of:
Detect the color lightness;
If the color lightness changes, the color lightness before current color lightness and the variation is compared the ratio of the color lightness before obtaining current color lightness and changing;
According to the ratio of the color lightness before current color lightness and the variation, the saturation degree of color is regulated accordingly.
Another purpose of the embodiment of the invention is to provide a kind of color adjustment system, and described system comprises:
Whether detection module is used to detect the color lightness and changes;
The lightness read module is used for reading current color lightness when the color lightness changes;
Adjustment module is used for the ratio according to color lightness before described current color lightness and the variation, adjusts the saturation degree that adapts with described current color lightness automatically.
Another purpose of the embodiment of the invention is to provide the display of the above-mentioned color adjustment of use system.
Compared with prior art, when the present invention imports contrast and brightness the user, system is according to contrast of being imported and brightness, by the pure software method, automatically adjust a saturation degree that adapts to it, the picture distortion phenomenon of having avoided the user when each self-regulation contrast, brightness and saturation degree, to attend to one thing and lose sight of another and brought effectively, simultaneously, owing to be systematically to regulate the color three elements, therefore can make system show the most real color effect.
Description of drawings
Fig. 1 is the color model synoptic diagram of color three elements HSV;
Fig. 2 is the color conditioning method process flow diagram that the embodiment of the invention provides;
Fig. 3 is the color adjustment system architecture synoptic diagram that the embodiment of the invention provides;
Fig. 4 is that brightness changes the influence of the colour of skin and the effect synoptic diagram after the employing color conditioning method adjusting of the present invention when adopting prior art; And
Fig. 5 is that brightness changes the influence of edge details and images level and the effect synoptic diagram after the employing color conditioning method adjusting of the present invention when adopting prior art.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention is by receiving the contrast and the brightness of user's input, when the detection lightness changes, according to the parameter that sets in advance, lightness ratio and lightness saturation degree, calculate a saturation degree that adapts with current lightness, thereby adjust picture display effect in view of the above.
Consult Fig. 2, the color conditioning method process flow diagram that the embodiment of the invention provides, details are as follows.
Step S101 sets in advance coarse adjustment parameter and compensation parameter.
The adjusting of its brightness of practical video image or saturation degree always has a scope or the upper limit, and for example, in embodiment provided by the invention, brightness or saturation degree may be of choosing in 0～255 scope less than 255 scope.If the scope of regulating is chosen bigger difference is arranged, the variation ratio of simple lightness as the parameter deficiency so that saturation degree drop within the scope that it chooses, therefore, need default coarse adjustment parameter D ' as auxiliary parameter, in order further to finely tune saturation degree, also need a default compensation parameter Offset, compensation parameter Offset can be one on the occasion of, zero or negative value.
Step S102 receives the contrast and the brightness of user's input.
Because contrast and brightness are corresponding with the color lightness, it is the bright-dark degree of contrast and brightness reaction color, so when the user imported contrast and brightness by input media or interface, whether this input conduct of the reception user of system regulated the foundation of saturation degree.
Step S103 detects the color lightness.
The color lightness is corresponding with contrast and brightness, and therefore, for system, detecting the color lightness in fact also is to import contrast and brightness in order to detect the user.
Step S104 if the color lightness changes, then reads current color lightness.
As previously mentioned, as long as the user has imported new brightness and contrast, then the color lightness can change.If the color lightness changes, then system reads current color lightness.
Step S105 obtains the saturation degree of current color lightness before changing.
For convenience, hereinafter current color lightness is represented the lightness Y ' expression before changing, the saturation degree S ' expression before current color lightness changes with Y.
Step S106, the ratio of color lightness before calculating current color lightness and changing.
The ratio of color lightness is represented with D before current color lightness and the variation, in this step, needs to calculate the value of D=Y/Y '.
Step S107, according to described lightness before changing saturation degree and current color lightness with change before the ratio of color lightness, calculate the color saturation that makes new advances.
From the HSV colour model as can be seen, even under the certain situation of form and aspect H, change saturation degree and lightness slightly, color is changed.Since lightness and saturation degree all be one independently individual mutually, not have the variation relation that directly quantizes between them, the ratio D of color lightness can not be applied directly in the variation of saturation degree current color lightness with changing before; Moreover, as previously mentioned, the adjusting of its brightness of practical video image or saturation degree always has a maximum magnitude or the upper limit, if the scope of regulating is chosen bigger difference is arranged, the variation ratio D of simple lightness as the parameter deficiency so that saturation degree drop within the scope that it chooses.Therefore, need default coarse adjustment parameter D ' as auxiliary parameter,, also need a default compensation parameter Offset for further fine setting saturation degree, compensation parameter Offset can be one on the occasion of, zero or negative value.
Current color lightness before changing saturation degree S ', current color lightness and change before ratio D, the coarse adjustment parameter D of color lightness ' and compensate the basic parameter that parameter Offset is new saturation computation formula.In embodiment provided by the invention, the new saturation computation formula of design is S=D * D ' * S '+Offset.Need to prove that the computing formula of design just is used to illustrate one embodiment of the present invention, those skilled in the art can design other computing formula fully not deviating under the spirit prerequisite of the present invention.
Step S108 according to described new color saturation, resets current color saturation,, writes the saturation degree register with calculating the new color saturation value of gained that is, and so, color upgrades to be finished.
From said method as can be seen, the present invention's the user that needs imports contrast and brightness, system can be according to user's input, automatically saturation degree is adjusted to a suitable value according to the algorithm of realizing design, attending to one thing and lose sight of another when having avoided independent adjusting color three elements guarantees a preferable display effect simultaneously.Subgraph D, the E of Fig. 4 and subgraph D, the E of Fig. 5 are respectively the effect synoptic diagram that adopts after color conditioning method of the present invention is regulated.
Consult Fig. 3, the color adjustment system architecture synoptic diagram that the embodiment of the invention provides.For convenience of explanation, only show and the embodiments of the invention relevant portion, this system is used for display devices such as LCD, the PDP of video field and CRT, and the module in the system can be software unit, hardware cell or software and hardware combining unit.
Receiver module 301 is used to receive the contrast and the brightness of user's input, and contrast and brightness are corresponding with described color lightness.In embodiments of the present invention, the user can be by input media or man-machine interface input contrast and brightness.Detection module 302 detects the color lightness, for the user, input be contrast and brightness, for system, this input can detected module 302 be reacted to detect the color lightness.
If detection module 302 detects the color lightness and changes, then read current color lightness Y by lightness read module 304.
Auxiliary parameter memory module 303 has been stored the coarse adjustment parameter D that the configuring condition according to system sets in advance ' and compensate parameter Offset.
Owing to there not be the variation relation that directly quantizes between lightness and the saturation degree, current color lightness with change before the ratio D=Y/Y ' (Y ' expression change lightness before) of color lightness can not be applied directly in the variation of saturation degree; Moreover the adjusting of its brightness of practical video image or saturation degree always has a maximum magnitude or the upper limit, if the scope of regulating is chosen bigger difference is arranged, the variation ratio D of simple lightness as the parameter deficiency so that saturation degree drop within the scope that it chooses.
Therefore, adjustment module 305 can with current color lightness before changing saturation degree S ', current color lightness and change before ratio D, the coarse adjustment parameter D of color lightness ' and to compensate parameter Offset be basic parameter, according to the computing formula that designs earlier, calculate new saturation degree.In embodiment provided by the invention, the new saturation computation formula of design is S=D * D ' * S '+Offset.Need to prove that the computing formula of design just is used to illustrate one embodiment of the present invention, those skilled in the art can design other computing formula fully not deviating under the spirit prerequisite of the present invention.
The embodiment of the invention is by receiving the contrast and the brightness of user's input, when the detection lightness changes, according to the parameter that sets in advance, lightness ratio and lightness saturation degree, calculate a saturation degree that adapts with current lightness, thereby adjust picture display effect in view of the above.Compared with prior art, when the present invention imports contrast and brightness the user, system is according to contrast of being imported and brightness, by the pure software method, automatically adjust a saturation degree that adapts to it, the picture distortion phenomenon of having avoided the user when each self-regulation contrast, brightness and saturation degree, to attend to one thing and lose sight of another and brought effectively, simultaneously, owing to be systematically to regulate the color three elements, therefore can make system show the most real color effect.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a color conditioning method is characterized in that, said method comprising the steps of:
Detect the color lightness;
If the color lightness changes, the color lightness before current color lightness and the variation is compared the ratio of the color lightness before obtaining current color lightness and changing;
According to the ratio of the color lightness before current color lightness and the variation, the saturation degree of color is regulated accordingly.
2. color conditioning method as claimed in claim 1 is characterized in that, described method also comprises:
Receive the contrast and the brightness of user's input, described contrast and brightness are corresponding with described color lightness.
3. color conditioning method as claimed in claim 1 is characterized in that, described method also comprises:
According to the configuring condition of system, set in advance a coarse adjustment parameter D ' an and compensation parameter Offset, described compensation parameter Offset be on the occasion of, zero or negative value.
4. method as claimed in claim 3 is characterized in that, described step of the saturation degree of color being regulated according to the color lightness after changing preceding color lightness and changing comprises:
Obtain the saturation degree S ' before the color lightness changes;
Calculate the ratio D of current color lightness and variation color lightness before;
Saturation degree S ' before changing according to the color lightness, current color lightness with change before the ratio D of color lightness, and default coarse adjustment parameter D ' and compensation parameter Offset, calculate the saturation degree S of the color after the variation of color lightness;
The saturation degree of color is adjusted to the saturation degree S of the color that calculates.
5. method as claimed in claim 4, it is characterized in that, change preceding saturation degree S ' according to the color lightness, the ratio D of color lightness before current color lightness and the variation, and default coarse adjustment parameter D ' and compensation parameter Offset, the computing formula that calculates the saturation degree S of the color after the color lightness changes is: S=D * D ' * S '+Offset.
6. a color adjustment system is characterized in that, described system comprises:
Whether detection module is used to detect the color lightness and changes;
The lightness read module is used for reading current color lightness when the color lightness changes;
Adjustment module is used for the ratio according to color lightness before described current color lightness and the variation, adjusts the saturation degree that adapts with described current color lightness automatically.
7. color adjustment as claimed in claim 6 system is characterized in that described system further comprises:
Receiver module is used to receive the contrast and the brightness of user's input, and described contrast and brightness are corresponding with described color lightness.
8. color adjustment as claimed in claim 7 system is characterized in that described system further comprises:
Auxiliary parameter memory module is used to store coarse adjustment parameter and compensation parameter that the configuring condition according to system sets in advance.
9. display that comprises the described system of claim 6.
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| CN2008102163417A CN101383138B (en) | 2008-09-22 | 2008-09-22 | Color regulating method, system and display |
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| CN101383138B true CN101383138B (en) | 2010-09-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102158715B (en) * | 2010-02-12 | 2013-01-30 | 瑞昱半导体股份有限公司 | Saturation regulation device and method thereof |
| CN103310764A (en) * | 2012-03-15 | 2013-09-18 | 冠捷投资有限公司 | Method for executing auto color setup by using display |
| CN103373098B (en) * | 2012-04-27 | 2016-08-03 | 北大方正集团有限公司 | The printing process of color compensation and device |
| CN104116571B (en) * | 2014-06-20 | 2017-11-10 | 中国科学院过程工程研究所 | A kind of dentistry color board |
| CN107863085B (en) * | 2017-12-20 | 2019-08-06 | 惠科股份有限公司 | A kind of driving method and display device of display device |
| US11159761B2 (en) * | 2018-07-18 | 2021-10-26 | Sharp Nec Display Solutions, Ltd. | Video display device and video display method |
| CN113590065B (en) * | 2021-07-28 | 2024-01-16 | 展讯通信(天津)有限公司 | Color adjustment method and device, storage medium and display device |
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