CN104200794B - Image regulating method and display - Google Patents
Image regulating method and display Download PDFInfo
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- CN104200794B CN104200794B CN201410410267.8A CN201410410267A CN104200794B CN 104200794 B CN104200794 B CN 104200794B CN 201410410267 A CN201410410267 A CN 201410410267A CN 104200794 B CN104200794 B CN 104200794B
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Abstract
The present invention provides a kind of image regulating method, includes：Produce the gray-scale distribution figure of image；It is first interval and second interval by the gray-scale distribution figure at least cutting, the wherein grey decision-making of the first interval is more than the grey decision-making of the second interval；Compare the pixel quantity and threshold value of the first interval；And the pixel intensity of the first interval is adjusted using correction function according to comparative result；Wherein, when the pixel quantity of the first interval is more than the threshold value, the pixel intensity of the first interval is reduced using the correction function.
Description
Technical field
The present invention provides a kind of image regulating method and display, and espespecially one kind can detect gray-scale distribution to carry out adjustment picture bright
The image regulating method and display of degree.
Background technology
With the development of science and technology conventional mass computing machine host is designed to be suitable for application in individual's electricity of family life
Brain.PC provides consumer and applies document software and/or recreational Games Software using world-wide web, execution.When
When performing Games Software, the picture of display may become PC as game content produces fast regional brightness
Change, but the Rapid brightness that the eyesight of consumer is generally difficult to adapt to picture changes, such as traditional display picture is from bright
When scene is transformed into dead color system background suddenly, it is the display image in picture that consumer, which will be difficult to recognize dead color,.Refer to figure
1, Fig. 1 is the gamma graph of the regulating picture brightness displaying device of known techniques, and wherein curve B is before picture brightness does not adjust
Gamma curve, curve A is because of the gamma curve that picture is partially black and adjusts, and curve C is because of the gamma song that picture is partially white and adjust
Line.As shown in Figure 1, traditional picture brightness method of adjustment is whole pixels of unified adjustment picture, is varied without in picture
The image block of brightness can also be adjusted in the lump, easily cause the shortcomings that image quality is unstable.
The content of the invention
The present invention provides a kind of image regulating method and display detected gray-scale distribution and carry out adjustment picture brightness, with solution
The problem of certainly above-mentioned.
In a first aspect, the present invention provides a kind of image regulating method, include：
Produce the gray-scale distribution figure of image；
It is first interval and second interval by the gray-scale distribution figure at least cutting, the grey decision-making of the wherein first interval is more than
The grey decision-making of the second interval；
Compare the pixel quantity and threshold value of the first interval；And
The pixel intensity of the first interval is adjusted using correction function according to comparative result；
Wherein, when the pixel quantity of the first interval is more than the threshold value, firstth area is reduced using the correction function
Between the pixel intensity.
Preferably, when the pixel quantity of the first interval is less than the threshold value, the pixel of the first interval is not adjusted
Brightness.
Preferably, the correction function changes with the gray-scale distribution difference of the image.
Preferably, before the step of adjusting the pixel intensity of the first interval using correction function according to comparative result, also
Including：
Judge whether the image brilliance of the image is less than reference value；
The step of adjusting the pixel intensity of the first interval using correction function according to comparative result includes：
When the image brilliance is less than the reference value, the first interval is adjusted using the correction function according to the comparative result
The pixel intensity.
Preferably, judge the image brilliance whether less than the reference value be：According to the first interval and the second interval
Pixel distribution goes to judge whether the image brilliance is less than the reference value；Or go to judge according to the pixel quantity of the second interval
Whether the image brilliance is less than the reference value.
Second aspect, the present invention provide a kind of display, included：
Panel unit, for showing image；And
Controller, the panel unit being electrically connected, the controller is used for producing the gray-scale distribution figure of the image, and by the GTG
Distribution map at least cutting is first interval and second interval, and the controller is separately used for the pixel quantity and door for comparing the first interval
Threshold value, to adjust the pixel intensity of the first interval using correction function according to comparative result；
Wherein, the grey decision-making of the first interval is more than the grey decision-making of the second interval, and the controller is in the first interval
Pixel quantity when being more than the threshold value, the pixel intensity of the first interval is reduced by the correction function.
Preferably, the controller does not separately change firstth area when the pixel quantity of the first interval is less than the threshold value
Between the pixel intensity.
Preferably, the correction function changes with the gray-scale distribution difference of the image.
Preferably, the controller judges whether the image brilliance of the image is less than reference value, to decide whether utilization, this is repaiied
Positive function adjusts the pixel intensity of the first interval.
Preferably, the controller is according to the pixel distribution of the first interval and the second interval or according to the second interval
Pixel quantity go to judge whether the image brilliance is less than the reference value.
The third aspect, the present invention provide a kind of image regulating method, included：
Produce the gray-scale distribution figure of image；
It is first interval and second interval by the gray-scale distribution figure at least cutting, the grey decision-making of the wherein first interval is more than
The grey decision-making of the second interval；
Judge whether the image brilliance of the image is less than reference value；
When the image brilliance is less than the reference value, the pixel intensity of the first interval is reduced using correction function.
Preferably, when the image brilliance is less than the reference value, the pixel intensity of the first interval is reduced using correction function
The step of before, additionally comprised：
Compare the pixel quantity and threshold value of the first interval；
Wrapped the step of the image brilliance is less than the reference value, the pixel intensity of the first interval is reduced using correction function
Include：
When the pixel quantity of the first interval is more than the threshold value and the image brilliance is less than the reference value, repaiied using this
Positive function adjusts the pixel intensity of the first interval.
Preferably, judge the image image brilliance whether less than reference value be：According to the first interval and secondth area
Between pixel distribution go to judge whether the image brilliance is less than the reference value；Or gone according to the pixel quantity of the second interval
Judge whether the image brilliance is less than the reference value.
The image regulating method and display of the present invention can judge scene according to the entirety or specific region brightness of image
Whether change；If scene is switched to dark picture, the gray-scale distribution figure of image is further analyzed to find out in dark background
High brightness block icon, and the brightness of the respective pixel according to default correction function reduction high brightness block icon, make to highlight
Degree block diagram, which is marked in the dark background of picture, will not seem dazzling, can both maintain the comparison of light and shade in image between different pattern,
Also the definition of image can be kept.Prior art is compared, the present invention can effectively lift the picture quality of display, have preferable market
Competitiveness.
Brief description of the drawings
Fig. 1 is the gamma graph of the regulating picture brightness displaying device of known techniques；
Fig. 2 is the functional block diagram of the display of the embodiment of the present invention；
Fig. 3 is the gray-scale distribution figure of image shown by the display of the embodiment of the present invention；
Fig. 4 is the curve map that the brightness of the embodiment of the present invention changes；
Fig. 5 is the flow chart of the image regulating method of the embodiment of the present invention.
Embodiment
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby coordinate embodiment detailed
It is described as follows.
Referring to Fig. 2, Fig. 2 is the functional block diagram of the display 10 of the embodiment of the present invention.Display 10 includes electric each other
The panel unit 12 and controller 14 of connection.Controller 14 is aobvious come driving panel unit 12 according to the host side data received
Show image.When display 10 is shown by becoming clear into the image of shady place, user is suddenly bright because of its field range
Blackout is changed, it will usually part high brightness block icon or the other corresponding patterns being difficult to see clearly in image in dark background, therefore control
Device 14 processed can find out the high brightness block icon of the part by the gray-scale distribution figure of parsing image, and be joined according to pixel quantity etc.
Number judges whether that this block diagram target pixel intensity need to be reduced, so that the image detail of display 10 can be relatively sharp clearly demarcated.
For example, when display 10 play be game picture image, image, which is shown from bright outdoor, is transferred to the moon
When scene in darkroom switches, if indoor scene has the luminance difference of the block icon of such as light source, light source and other dark backgrounds
The different identification that can destroy overall image.Therefore, inventive display 10 can find out the bright block diagram in indoor scene automatically
Mark, and according to its intensity (reduction brightness) of the initial value amendment of bright block icon, to highlight picture brightness contrast
The identification of image detail is also taken into account simultaneously.
Fig. 3 is referred to Fig. 5.Fig. 3 is the gray-scale distribution figure of image shown by the display 10 of the embodiment of the present invention, wherein
Transverse axis represents the various grey decision-makings of image, and the longitudinal axis represents the quantity that each grey decision-making is distributed in image.Fig. 4 is the embodiment of the present invention
Brightness change curve map, wherein transverse axis represents the various grey decision-makings of image, and the longitudinal axis represents the intensity of each grey decision-making.Figure
5 be the flow chart of the image regulating method of the embodiment of the present invention, and the image regulating method shown in Fig. 5 is applied to aobvious shown in Fig. 1
Show device 10.
Controller 10 can have analytic unit or adjustment unit (not being shown in figure), to carry out image analysing computer, GTG
Analysis and the function of pixel adjustment.The predeterminable ginseng for being used for judging image brilliance of the memory body (not being shown in figure) of controller 10
Examine value and for judging the threshold value of pixel quantity, and also store a correction function in advance.First, step 500 and step are performed
Rapid 502, start the image adjustment function of display 10, controller 10 compares image brilliance and reference value, starts to judge that image is drawn
Face is bright scene or dark scene.When image brilliance is higher than reference value, represent that the picture in image is in bright scene, no
The adjustment of pixel intensity, such as step 504 need to be carried out.When image brilliance is less than reference value, picture in image is represented as dark field
Scape, it need to further determine whether that correction function to be utilized carries out pixel adjustment.Then, step 506 is performed, controller 10 is according to aobvious
Show gray-scale distribution figure corresponding to image generation, as shown in figure 3, gray-scale distribution figure can be seen that the distributed quantity feelings of different grey decision-makings
Condition.Then, step 508 and step 510 are performed, is first interval Z1 and second interval Z2 by least cutting of gray-scale distribution figure, and
Compare first interval Z1 pixel quantity and threshold value.Wherein, the larger scope of grey decision-making is defined as first interval Z1, grey decision-making
Less is then second interval Z2.Gray-scale distribution figure can separately be cut into more than two sections by the present invention, and grey decision-making most
Big section definition is first interval Z1, to find out the high brightness block icon of indoor scene.
The gray-scale distribution figure of image can be cut into two or more sections, and the relatively low section of pixel value represents image
Interior dark background, the step 502 of comparison image brilliance and reference value described in image regulating method of the present invention can be according to design
Whether demand, it is to go to judge image brilliance less than ginseng according to first interval Z1 and second interval Z2 pixel distribution to decide in its sole discretion
Examine value or the pixel quantity according to second interval Z2 goes to judge whether image brilliance is less than reference value.When image brilliance is less than
Reference value, represent that image frame is switched to the indoor scene of darkness from bright outdoor scene, so begin to start the shadow of this case
As method of adjustment is with the acquirement optimal brightness adjustment effect between the transfer of different scene of game.In addition, the present invention not limits shadow
As picture from bright outdoor scene be switched to darkness indoor scene, can be also adjusted only for dark scene picture.
When first interval Z1 pixel quantity is less than threshold value, it is small to represent the area of high brightness block icon, in image
The influence of overall picture is little, therefore performs step 512, and controller 10 does not change first interval Z1 pixel intensity (Luma
index).When first interval Z1 pixel quantity is more than threshold value, expression high brightness block icon occupies certain ratio in image
The area of example, therefore step 514 is performed, controller 10 reduces the pixel intensity (Luma in first interval Z1 using correction function
Index), the contrast difference of high brightness icon and dark background is thereby slowed down.In addition, no matter the present invention is also not excluded for first interval
How much Z1 pixel quantity is carried out step 514.Special one is mentioned that, the characteristic value of correction function is with the gray-scale distribution of image
Difference and change, such as the pixel intensity in specific section is higher, and the correction of correction function is larger；Picture in specific section
Plain brightness is lower, and the correction of correction function is then accordingly reduced.In Fig. 4, curve CL is the initial pixel brightness before adjustment.If
First interval Z1 pixel intensity is higher (such as Luma index are between 8~15), and curve CL is revised as curve by correction function
CL1；If first interval Z1 pixel intensity is medium (such as Luma index are between 5~7), curve CL is revised as by correction function
Curve CL2；If first interval Z1 pixel intensity is relatively low (such as Luma index are between 0~4), correction function is then by curve CL
It is revised as curve CL3.
Correction function can correspond to the Serial No. of first interval Z1 GTG quantity, and image regulating method is by first
The preset value from correction function (Serial No.) is individually subtracted in all pixels in the Z1 of section, and thereby fair curve CL is in the firstth area
Between in Z1 each pixel intensity.Or correction function can also passing ratio conversion mode, by all pixels in first interval Z1
Each pixel basis that its pixel intensity or first interval Z1 are reduced with same ratio each corresponds to ratiometric conversion, to divide
Whole pixel intensities is not reduced.Depending on curve CL correction is with its original intensity, original intensity is higher, and amendment change is got over
Greatly；Original intensity is relatively low, and amendment change is relatively slow, as shown in Figure 4.The computing mode of correction function can be not limited to the number of aforementioned list
Kind method, holds depending on design requirement, in this no longer to other applicable operation function elaborates.
The image regulating method and display of the present invention can judge scene according to the entirety or specific region brightness of image
Whether change；If scene is switched to dark picture, the gray-scale distribution figure of image is further analyzed to find out in dark background
High brightness block icon, and the brightness of the respective pixel according to default correction function reduction high brightness block icon, make to highlight
Degree block diagram is marked in the dark background of picture the dispaly state that is dazzling, while maintaining dark background that will not seem, can both maintain
Comparison of light and shade in image between different pattern, it can also keep the definition of image.Prior art is compared, the present invention can be lifted effectively
The picture quality of display, has the preferable market competitiveness.
The present invention is described by above-mentioned related embodiment, but above-described embodiment is only the example for implementing the present invention.
It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from the present invention spirit and
In the range of the change and retouching made, belong to the scope of patent protection of the present invention.
Claims (9)
1. a kind of image regulating method, it is characterised in that include：
Produce the gray-scale distribution figure of image；
Be first interval and second interval by the gray-scale distribution figure at least cutting, wherein the grey decision-making of the first interval be more than this
The grey decision-making in two sections；
Compare the pixel quantity and threshold value of the first interval；And
The pixel intensity of the first interval is adjusted using correction function according to comparative result；
Before the step of pixel intensity of the first interval being adjusted according to the comparative result using the correction function, in addition to：
Judge whether the image brilliance of the image is less than reference value；
The step of adjusting the pixel intensity of the first interval using the correction function according to the comparative result includes：
When the image brilliance is less than the reference value, the picture of the first interval is adjusted using the correction function according to the comparative result
Plain brightness；
Wherein, when the image brilliance is more than the threshold value less than the pixel quantity of the reference value and the first interval, utilize
The correction function reduces the pixel intensity of the first interval；When pixel intensity in the first interval is high, the correction function
Correction is big；When pixel intensity in the first interval is low, the correction of the correction function is small, the pixel count of the first interval
When amount is less than the threshold value, the pixel intensity of the first interval is not adjusted.
2. image regulating method as claimed in claim 1, it is characterised in that the correction function is poor with the gray-scale distribution of the image
It is different and change.
3. image regulating method as claimed in claim 1, it is characterised in that judge whether the image brilliance is less than the reference value
For：Pixel distribution according to the first interval and the second interval goes to judge whether the image brilliance is less than the reference value；Or
Pixel quantity according to the second interval goes to judge whether the image brilliance is less than the reference value.
4. a kind of display, it is characterised in that include：
Panel unit, for showing image；And
Controller, the panel unit being electrically connected, the controller is used for producing the gray-scale distribution figure of the image, and by the gray-scale distribution
Figure at least cutting is first interval and second interval, and the controller is separately used for the pixel quantity and threshold for comparing the first interval
Value, to adjust the pixel intensity of the first interval using correction function according to comparative result；
Wherein, the grey decision-making of the first interval is more than the grey decision-making of the second interval, and the controller is according to the comparative result
Before the pixel intensity for adjusting the first interval using the correction function, judge the image brilliance of the image whether less than reference
Value, when the image brilliance is more than the threshold value less than the pixel quantity of the reference value and the first interval, pass through the amendment
Function reduces the pixel intensity of the first interval；When pixel intensity in the first interval is high, the correction of the correction function
Greatly；When pixel intensity in the first interval is low, the correction of the correction function is small, the controller separately the first interval should
Pixel quantity does not change the pixel intensity of the first interval when being less than the threshold value.
5. display as claimed in claim 4, it is characterised in that the correction function changes with the gray-scale distribution difference of the image
Become.
6. display as claimed in claim 4, it is characterised in that the controller is according to the first interval and the second interval
Pixel distribution or pixel quantity according to the second interval go to judge whether the image brilliance is less than the reference value.
7. a kind of image regulating method, it is characterised in that include：
Produce the gray-scale distribution figure of image；
Be first interval and second interval by the gray-scale distribution figure at least cutting, wherein the grey decision-making of the first interval be more than this
The grey decision-making in two sections；
Judge whether the image brilliance of the image is less than reference value；
When the image brilliance is less than the reference value, the pixel intensity of the first interval is reduced using correction function；The first interval
When interior pixel intensity is high, the correction of the correction function is big；When pixel intensity in the first interval is low, the correction function
Correction is small,
Wherein, when the image brilliance is less than the reference value, and the pixel intensity of the first interval is reduced using correction function the step of
Including：Compare the pixel quantity and threshold value of the first interval, when the pixel quantity of the first interval is less than the threshold value,
The pixel intensity of the first interval is not changed.
8. image regulating method as claimed in claim 7, it is characterised in that when the image brilliance is less than the reference value, utilize
Before correction function reduces the step of pixel intensity of the first interval, additionally comprise：
Compare pixel quantity and the threshold value of the first interval；When the first interval pixel quantity be more than the threshold value and
When the image brilliance is less than the reference value, the pixel intensity of the first interval is adjusted using the correction function.
9. image regulating method as claimed in claim 7, it is characterised in that judge the image brilliance of the image whether less than ginseng
Examining value is：Pixel distribution according to the first interval and the second interval goes to judge whether the image brilliance is less than the reference value；
Or go to judge whether the image brilliance is less than the reference value according to the pixel quantity of the second interval.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105513566A (en) * | 2016-01-25 | 2016-04-20 | 明基电通有限公司 | Image adjusting method of executing optimal adjustment according to different environments and displayer |
| CN105489192B (en) * | 2016-01-25 | 2018-02-23 | 明基电通有限公司 | Display and its image regulating method with image self-optimization function |
| CN105489193B (en) * | 2016-01-29 | 2018-08-24 | 明基智能科技（上海）有限公司 | Image regulating method and display equipment |
| CN108171667A (en) * | 2017-12-29 | 2018-06-15 | 努比亚技术有限公司 | A kind of image processing method, terminal and computer readable storage medium |
| CN107948531A (en) * | 2017-12-29 | 2018-04-20 | 努比亚技术有限公司 | A kind of image processing method, terminal and computer-readable recording medium |
| CN108234893B (en) * | 2018-01-02 | 2021-02-05 | 努比亚技术有限公司 | Brightness adjusting method, brightness adjusting equipment and computer readable storage medium |
| CN109889303B (en) * | 2018-12-28 | 2021-10-22 | 努比亚技术有限公司 | Video playing mode switching method and device and computer readable storage medium |
| CN110400529B (en) * | 2019-06-28 | 2023-04-28 | 苏州佳世达光电有限公司 | Projection brightness adjusting method and projector thereof |
| CN111083388B (en) * | 2019-12-26 | 2021-04-16 | 浙江大华技术股份有限公司 | Light supplement lamp control method and device, electronic equipment and storage medium |
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| CN103617792A (en) * | 2013-11-14 | 2014-03-05 | 天津三星电子有限公司 | Method for adjusting image display of display terminal and display terminal |
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| US7760961B2 (en) * | 2004-10-15 | 2010-07-20 | Caba Moldvai | Adaptive contrast enhancement |
| US20070053587A1 (en) * | 2005-08-24 | 2007-03-08 | Ali Walid S | Techniques to improve contrast enhancement using a luminance histogram |
| JP4867365B2 (en) * | 2006-01-30 | 2012-02-01 | ソニー株式会社 | Imaging control apparatus, imaging apparatus, and imaging control method |
| KR101448642B1 (en) * | 2008-04-22 | 2014-10-08 | 엘지전자 주식회사 | Method for controlling black level of input signal and display unit enabling of the method |
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| CN103617792A (en) * | 2013-11-14 | 2014-03-05 | 天津三星电子有限公司 | Method for adjusting image display of display terminal and display terminal |
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