CN105489193A - Image adjusting method and display device - Google Patents
Image adjusting method and display device Download PDFInfo
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- CN105489193A CN105489193A CN201610063964.XA CN201610063964A CN105489193A CN 105489193 A CN105489193 A CN 105489193A CN 201610063964 A CN201610063964 A CN 201610063964A CN 105489193 A CN105489193 A CN 105489193A
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention provides an image adjusting method, which is applied to a display device. The display device is provided with an ambient light detector. The image adjusting method includes the steps of driving the ambient light detector to detect ambient brightness, adjusting backlight values of multiple pixels of the display device according to the ambient brightness, and adjusting brightness displacement values of the pixels according to a displacement correction function.
Description
Technical field
The invention provides a kind of image regulating method and display device thereof, espespecially a kind of image regulating method and display device thereof that effectively can improve bright dark scene details in picture.
Background technology
The picture brightness of display, along with the change of place ambient brightness, has significantly different visual experiences to user.For example, be placed on bright ring domestic display when maintaining first order brightness, the picture that user watches this first order brightness can't feel uncomfortable; But when display to move on in dark situation and still maintains first order brightness, will be too dazzling concerning the picture of this brightness user.In order to overcome this defect, just develop a kind of display with backlight illumination adjustment function, its utilize luminance detection device detect arround ambient brightness, and the backlight illumination of the environmentally corresponding adjustment display of brightness.But traditional backlight illumination adjustment technology need change the backlight illumination of picture with manual adjusting style, but dark scene details more can be difficult to identification when low backlight illumination, have the shortcoming of image quality instability.
Summary of the invention
The object of the present invention is to provide a kind of image regulating method and the display device that effectively can improve bright dark scene details in picture, to solve the above problems.
In order to achieve the above object, first aspect, the invention provides a kind of image regulating method, is applied to display device, and this display device has surround lighting detector, and this image regulating method includes:
This surround lighting detector is driven to detect ambient brightness;
The backlight value of multiple pixels of this display device is adjusted according to this ambient brightness; And
The brightness shift value of the plurality of pixel is adjusted according to displacement correction function.
Preferably, separately comprise:
According to the correlative value of the plurality of pixel of image frame Content adaptation of this display device.
Preferably, this image regulating method first adjusts this correlative value of the plurality of pixel, then adjusts this backlight value of the plurality of pixel.
Preferably, separately comprise:
The color-values of the plurality of pixel is adjusted according to color correction function.
Preferably, according to saturation degree and the lightness of this this color-values of color correction function correction.
Preferably, when this display device is positioned at high-brightness environment, improve the saturation degree of this color-values according to this color correction function, when this display device is positioned at low-light level environment, reduce this saturation degree and this lightness of this color-values according to this color correction function.
Preferably, the step driving this surround lighting detector to detect ambient brightness comprises: drive this surround lighting detector to obtain once detecting value second every N, and after collecting M detecting value, calculate the reference point of this M detecting value, and this reference point is detected the detecting result of this ambient brightness as this surround lighting detector.
Preferably, this display device comprises plurality of display modes, each display mode has specific trigger condition, compare the detecting result of this surround lighting detector and multiple trigger condition, this display device correspondingly to be switched to one of them of this plurality of display modes, when determining that this display device switches display mode, adjust this backlight value of the plurality of pixel of this display device according to this ambient brightness.
Preferably, the step adjusting the brightness shift value of the plurality of pixel according to displacement correction function comprises: when this ambient brightness reduces, reduce this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding raising of this displacement correction function, make the brightness of first specific pixel with minimum gray scale value higher than this first specific pixel without the brightness before the adjustment of this image regulating method.
Preferably, the step adjusting the brightness shift value of the plurality of pixel according to displacement correction function comprises: when this ambient brightness improves, improve this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding reduction of this displacement correction function, make the brightness of second specific pixel with minimum gray scale value lower than this second specific pixel without the brightness before the adjustment of this image regulating method.
Preferably, different weighting parameters is overlapped respectively the plurality of pixel being used in and there is different grey decision-making, to adjust this brightness shift value of the plurality of pixel.
Preferably, this backlight value of this corresponding display mode has specific adjusted amount, and this specific adjusted amount is distinguished into multiple adjustment amounts by selectivity, and adjusts this backlight value and this brightness shift value of the plurality of pixel with the plurality of adjustment amount segmentation.
Second aspect, the invention provides a kind of display device, includes:
Panel unit, has multiple pixel with show image picture;
Surround lighting detector, is used for detecting the ambient brightness of this panel unit position; And
Controller, is electrically connected this panel unit, and this controller drives this surround lighting detector to detect this ambient brightness, and adjusts the backlight value of the plurality of pixel according to this ambient brightness and adjust the brightness shift value of the plurality of pixel according to displacement correction function.
Preferably, this controller is separately according to the correlative value of the plurality of pixel of image frame Content adaptation of this display device.
Preferably, this controller first adjusts this correlative value of the plurality of pixel, then adjusts this backlight value of the plurality of pixel.
Preferably, this controller separately adjusts the color-values of the plurality of pixel according to color correction function.
Preferably, this controller is according to the saturation degree of this this color-values of color correction function correction and lightness, and when this display device is positioned at high-brightness environment, this controller improves this saturation degree of this color-values according to this color correction function, when this display device is positioned at low-light level environment, this controller reduces this saturation degree and this lightness of this color-values according to this color correction function.
Preferably, this controller drives this surround lighting detector to obtain once detecting value second every N, and calculates the reference point of this M detecting value after collecting M detecting value, and this reference point is detected the detecting result of this ambient brightness as this surround lighting detector.
Preferably, this display device comprises plurality of display modes, each display mode has specific trigger condition, this image regulating method compares the detecting result of this surround lighting detector and the plurality of trigger condition, this display device correspondingly to be switched to one of them of this plurality of display modes, when this controller determines that this display device switches display mode, this controller adjusts this backlight value of the plurality of pixel of this display device according to this ambient brightness.
Preferably, when this ambient brightness reduces, this controller reduces this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding raising of this displacement correction function, make the brightness of first specific pixel with minimum gray scale value higher than this first specific pixel without the brightness before the adjustment of this image regulating method.
Preferably, when this ambient brightness improves, this controller improves this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding reduction of this displacement correction function, make the brightness of second specific pixel with minimum gray scale value lower than this second specific pixel without the brightness before the adjustment of this image regulating method.
Preferably, different weighting parameters is overlapped the plurality of pixel being used in the different grey decision-making of tool by this controller respectively, to adjust its brightness shift value.
Preferably, this backlight value of this corresponding display mode has specific adjusted amount, and this specific adjusted amount is distinguished into multiple adjustment amounts by this controller selectivity, and adjusts this backlight value and this brightness shift value of the plurality of pixel with the plurality of adjustment amount segmentation.
Compared with prior art, image regulating method of the present invention is applied to the display device with surround lighting detector, in order to overcome the defect that image frame overexposure is dazzling or dark portion details is unclear, after image regulating method have adjusted pixel backlight value, also can apply mechanically the brightness shift value of the plurality of pixel of displacement correction function correction, can effectively revise dark portion details, avoid image frame to glimmer, and can make the picture of bright field scape soft not dazzling, dark scene details is clear undistorted.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the display device of the embodiment of the present invention;
Fig. 2 is the process flow diagram of the image regulating method of the embodiment of the present invention;
The panel unit pixel-parameters that Fig. 3 to Fig. 6 is respectively the embodiment of the present invention enters the curve map that dark situation carries out changing adjustment from bright ring border;
The panel unit pixel-parameters that Fig. 7 to Figure 10 is respectively the embodiment of the present invention enters from dark situation the curve map that adjustment is carried out changing in bright ring border;
Figure 11 A, Figure 11 B and Figure 11 C are the curve map of the color-values adjustment of the embodiment of the present invention;
Figure 12 is the curve map by weighting parameters adjustment brightness shift value of the embodiment of the present invention;
Figure 13 A, Figure 13 B, Figure 13 C and Figure 13 D figure are respectively the schematic diagram of pixel distribution curve in different adjustment process of another embodiment of the present invention;
Figure 14 is the data volume mapping of the image frame of display device after image regulating method corrects of the embodiment of the present invention.
Embodiment
For making there is further understanding to object of the present invention, structure, feature and function thereof, embodiment is hereby coordinated to be described in detail as follows.
Refer to Fig. 1, Fig. 1 is the functional block diagram of the display device 10 of the embodiment of the present invention.Display device 10 comprises panel unit 12, surround lighting detector 14 and controller 16.Panel unit 12 has corresponding multiple pixels according to resolution difference.It is other that surround lighting detector 14 is adjacent to this panel unit 12, is used for detecting the ambient brightness of panel unit 12 position.Controller 16 is electrically connected on panel unit 12 and surround lighting detector 14, can according to steering order drive surface Slab element 12 show image picture.Display device 10 provides the plurality of display modes respectively with different parameters; Environmentally background light source change, each display mode has corresponding setting parameter, such as correlative value (contrastvalue), backlight value (pulsewidthmodulationvalue, PWMvalue), brightness shift value (intensityoffsetvalue, offsetvalue) and color-values (colorvalue).Wherein brightness shift value refers to the shift value of brightness in the GTG of pixel and Luminance Distribution.Panel unit 12 can be switched to corresponding display mode according to the detecting result of surround lighting detector 14 by controller 16, namely meaning adjusts above-mentioned multiple setting parameter of panel unit 12 automatically depending on the change of ambient brightness, the bright field scape reaching image frame is dazzling, the distortionless object of dark scene clarity of detail of overexposure not.
Refer to Fig. 2 to Figure 10, Fig. 2 is the process flow diagram of the image regulating method of the embodiment of the present invention, and Fig. 3 to Fig. 6 is the curve map that the parameter of the plurality of pixel of the panel unit 12 of the embodiment of the present invention enters that from bright ring border dark situation carries out changing adjustment.Image regulating method described in Fig. 2 is applicable to the display device 10 shown in Fig. 1.About image regulating method, first, perform step 200 and step 202, controller 16 drive environment optical detector 14 detects the ambient brightness of display device 10 and panel unit 12 position thereof, and environmentally the detecting result of optical detector 14 selects corresponding display mode (the detecting result of meaning and controller environmentally optical detector 14 from organizing the illumination range selecting correspondence illumination range more).In present pre-ferred embodiments, display device 10 provides five kinds of display modes (meaning and display device 10 provide five groups of illumination ranges), such as office mode, general modfel, transition mode, dim mode and darkroom pattern.The illumination of office mode is about more than 300 lumens (lux/m2), the illumination of general modfel is between 100 ~ 300 lumens, the illumination of transition mode is between 50 ~ 100 lumens, and the illumination of dim mode is between 10 ~ 50 lumens, and the illumination of darkroom pattern is then lower than 10 lumens; Right practical application is not limited to this.
In step 202, drive environment optical detector 14 obtains once detecting value every N second, and reference point is calculated (such as: reference point can be the arithmetic average of the plurality of M detecting value according to M each detecting value after collecting M detecting value, so be not limited thereto), using this reference point as the detecting result of surround lighting detector 14.Moreover each display mode all has specific trigger condition, meaning and the illumination range set by each pattern, the detecting result of comparison surround lighting detector 14 and the plurality of trigger condition, judge for switching to which kind of display mode by corresponding for display device 10.
Come again, perform step 204 to step 210, in the handoff procedure of display mode, first according to the correlative value (step 204) of the multiple pixel of Content adaptation of image frame; Then, the backlight value (step 206) of multiple pixel is adjusted; Because backlight value adjustment changes the overall brightness of image frame, therefore image regulating method also can adjust the brightness shift value (step 208) of multiple pixel further according to displacement correction function; Finally, image regulating method adjusts the color-values (step 210) of multiple pixel again according to color correction function, with the distortion of correcting image picture.As shown in Figure 3, curve C 1 is the pixel brightness contribution not performing image regulating method; When the change of environmental background light source is dark by bright turn, step 204 adjusts correlative value to draw high the dark portion curve of pixel brightness contribution, curve C 1 is made to be converted to curve C 2 shown in Fig. 4, now the most dim spot of pixel brightness contribution is close to the position (such as 0.06nits has slight variations depending on actual conditions) of brightness 0.
When performing step 206, correlative value adjusting range lowers the backlight value of pixel brightness contribution can allow curve C 2 be converted to curve C 3 shown in Fig. 5, the position that the most dim spot of curve C 3 changes to the position of brightness 0 ', most bright spot changes to brightness A '.In general, each pixel intensity that curve converts C3 to from C2 evenly declines, or alternative exponentially or alternate manner distribution, practical application is not limited to this.Dark portion details in image frame has distortion phenomenon because of step 206, therefore can recycle step 208 by the pixel intensity raising in image frame, and namely meaning improves the brightness shift value of curve C 3 with displacement correction function; Now curve C 3 is adjusted to curve C 4 shown in Fig. 6, the brightness with the specific pixel of minimum gray scale value can a little more than this specific pixel without the brightness before image regulating method adjustment, the most dim spot of such as curve C 4 is above repaiied brightness 0 " position (a little more than initial point 0), most bright spot above repaiied brightness A " position (a little more than brightness A '), the sharpness of dark portion details can be improved accordingly.
What another need one were carried is, in Fig. 3 and Fig. 4, when pixel brightness contribution is converted to curve C 2 from curve C 1, the correlative value adjusting range of dark portion curve is better is greater than the correlative value adjusting range of non-dark space in pixel brightness contribution (meaning and intermediate curve and highlights curve).And in different display modes, the visual actual demand of correlative value adjusting range of intermediate curve and highlights curve is designed to be equal to each other or unequal.For example, when the change of environmental background light source is dark by bright turn, the wherein a kind of display mode stressing high contrast does not improve intermediate curve, the display mode that another kind stresses details then may improve intermediate curve a little, its correlative value adjusting range should go motor-driven adjustment according to the characteristic of display mode, and all Regulation mechanism that can maintain curve smoothing all belong to application category of the present invention.
Separately bright by blackout for the change of environmental background light source, as shown in Figure 7 to 10, the curve C 1 ' of Fig. 7 is the pixel brightness contribution not yet performing image regulating method; When the change of environmental background light source is bright by blackout, step 204 adjusts correlative value to force down the dark portion curve of pixel brightness contribution, and curve C 1 ' is converted to the curve C 2 ' of Fig. 8.In step 206, when ambient brightness improves, improve the backlight value of the plurality of pixel, allow the Luminance Distribution of pixel be converted to the curve C 3 ' of Fig. 9 from curve C 2 ', the most dim spot of curve C 3 ' adjusts to brightness 0 " position (a little more than brightness 0 '), most bright spot adjust to the position (a little more than brightness A) of brightness A '.Then, in step 208, again by this brightness shift value of the plurality of pixel of the corresponding reduction of displacement correction function, such as with displacement correction function, curve C 3 ' is converted to the curve C 4 ' of Figure 10, make the brightness of the specific pixel with minimum gray scale value a little less than this specific pixel without the brightness before image regulating method adjustment, now the most dim spot of curve C 4 ' adjusts to the position (lower than brightness 0 ' and brightness 0 ") of brightness 0, most bright spot adjusts to brightness A " position (a little less than brightness A ', but higher than brightness A); In general, the plurality of brightness A, A ' and A " change very small, or can be considered same luminance point.Special one carries, and has the better position being adjusted to corresponding brightness 0 of brightness of the specific pixel of minimum gray scale value, and right actual conditions may deviation slightly slightly, chats bright in first.
Refer to Figure 11 A, Figure 11 B and Figure 11 C, it is the curve map of the color-values adjustment of the embodiment of the present invention.Color-values described in step 210 generally comprises colourity (Hue), saturation degree (Saturation) and lightness (Brightness), is so not limited thereto.The plurality of pixel of panel unit 12 is after the adjustment of correlative value, backlight value and brightness shift value, and color has distortion slightly, therefore image regulating method can perform the color-values that step 210 revises the plurality of pixel.As shown in Figure 11 A, the colourity of the plurality of pixel, switching to the change of different display modes not remarkable, can be selected to maintain former numerical value.As shown in Figure 11 B, display device 10 is (such as office mode) when high-brightness environment, and image regulating method can improve the saturation degree in color-values; When general lightness environment (such as general modfel), better not the adjusting of saturation degree and maintain former numerical value; When low-light level environment (such as dim mode and darkroom pattern), image regulating method then reduces saturation degree.As shown in Figure 11 C, display device 10 is (such as office mode and general modfel) when high-brightness environment and general lightness environment, the former numerical value of the better maintenance of lightness; When low-light level environment (such as dim mode and darkroom pattern), image regulating method separately can reduce lightness, makes image frame more attractive in appearance.
The present invention separately proposes a kind of method of adjustment of brightness shift value.Refer to Figure 12, Figure 12 is the curve map by weighting parameters adjustment brightness shift value of the embodiment of the present invention.During for curve C 3 is adjusted to curve C 4, first image regulating method is divided into multiple section according to the GTG of curve and Luminance Distribution the plurality of pixel, and the pixel be used in each section is overlapped respectively with different weights parameter, allow the brightness displacement amplitude that each section divides tool different.For example, the first section Z1 corresponds to the lower pixel of grey decision-making, can set higher weighting parameters, makes pixel in the first section Z1 have larger brightness shift value; The pixel that the corresponding GTG of 3rd section Z3 is higher, therefore the weighting parameters that setting is lower, reduce the brightness displacement amplitude of pixel in the 3rd section Z3; The weighting parameters of the second section Z2 is then between the first section Z1 and the weighting parameters of the 3rd section Z3, therefore the brightness displacement amplitude of its interior pixels also falls between.
The plurality of pixel is only divided into three sections by previous embodiment, right practical application is not limited to this, such as image regulating method of the present invention can go the gray-scale distribution of cutting curve according to pixel quantity, meaning is the particular weights parameter that each pixel has oneself, and different weighting parameters overlaps and is used in point the plurality of pixel of tool difference grey decision-making by image regulating method respectively; Wherein, the pixel the closer to dim spot has higher weightings parameter, and the pixel more close to bright spot then has lower weighting parameters, but not as limit.
Refer to Fig. 5, Fig. 9 and Figure 13 A, Figure 13 B, Figure 13 C and Figure 13 D, Figure 13 A, Figure 13 B, Figure 13 C and Figure 13 D are respectively the schematic diagram of pixel distribution curve in different adjustment process of another embodiment of the present invention.As shown in Fig. 5 and Fig. 9, the backlight value of the plurality of pixel is once cut to predetermined value by step 206, such as △ I, and the dark space of the plurality of pixel separately utilizes displacement correction function to improve its brightness shift value, gets back to the position close to brightness 0.In Figure 13 A, Figure 13 B, Figure 13 C and Figure 13 D illustrated embodiment, the backlight value segmentation of the plurality of pixel downgrades by image regulating method, such as, first come down to △ I1, and as shown in FIG. 13A, curve C L1 downgrades backlight value △ I1 and forming curves CL2 because of step 206; Then perform step 208, with displacement correction function adjustment brightness shift value, make curve C L2 be converted to curve C L3, as shown in Figure 13 B; Then, again perform step 206, curve C L3 through downgrading backlight value △ I2 forming curves CL4, as shown in fig. 13 c; Finally, step 206 adjusts the brightness shift value of curve C L4 and obtains curve C L5, as illustrated in figure 13d.
In the aforementioned embodiment, the specific adjusted amount △ I of backlight value is splitted into multiple adjustment amount △ I1 and △ I2 by image regulating method to carry out in batches, meaning i.e. time adjustment amount △ I1 and △ I2 can be less than specific adjusted amount △ I, image regulating method segmentation adjusts backlight value and the brightness shift value of the plurality of pixel, the plurality of pixel produce multistage rapidly and a little brightness change, image frame can not obviously glimmer, and can provide user more comfortable visual enjoyment.Still must one to carry, specific adjusted amount can divide into arbitrarily multiple adjustment amounts, is not limited to two adjustment amounts of the present embodiment.
It should be noted that, display device 10 can perform above-mentioned image regulating method, wherein, controller 16 drive environment optical detector 14 detects ambient brightness, and environmentally the multiple pixel of brightness adjustment backlight value and adjust the brightness shift value of multiple pixel according to displacement correction function.Further, controller 16 is separately according to the correlative value of the multiple pixel of image frame Content adaptation of display device 10.Preferably, controller 16 first adjusts the correlative value of multiple pixel, then adjusts the backlight value of multiple pixel.Further, the another color-values adjusting multiple pixel according to color correction function of controller 16.Preferably, controller 16 is according to the saturation degree of color correction function correction color-values and lightness, and when display device 10 is positioned at high-brightness environment, controller 16 improves the saturation degree of color-values according to color correction function, when display device 10 is positioned at low-light level environment, controller 16 reduces saturation degree and the lightness of color-values according to color correction function.Preferably, controller 16 drive environment optical detector 14 obtains once detecting value every N second, and calculates the reference point of M detecting value after collecting M detecting value, and detects the detecting result of ambient brightness as surround lighting detector 14 with reference to value.Preferably, display device 10 comprises plurality of display modes, each display mode has specific trigger condition, image regulating method compares the detecting result of surround lighting detector 14 and multiple trigger condition, display device 10 correspondingly to be switched to one of them of plurality of display modes, when controller 16 determines that display device 10 switches display mode, the backlight value of controller 16 environmentally multiple pixels of brightness adjustment display device 10.Preferably, when ambient brightness reduces, controller 16 reduces the backlight value of multiple pixel, again by the brightness shift value of the multiple pixel of the corresponding raising of displacement correction function, make the brightness of first specific pixel with minimum gray scale value higher than the first specific pixel without the brightness before image regulating method adjustment.Preferably, when ambient brightness improves, controller 16 improves the backlight value of multiple pixel, again by the brightness shift value of the multiple pixel of the corresponding reduction of displacement correction function, make the brightness of second specific pixel with minimum gray scale value lower than the second specific pixel without the brightness before image regulating method adjustment.Preferably, different weighting parameters is overlapped the multiple pixels being used in the different grey decision-making of tool by controller 16 respectively, to adjust its brightness shift value.Preferably, the backlight value of corresponding display mode has specific adjusted amount, and specific adjusted amount is distinguished into multiple adjustment amounts by controller 16 selectivity, and adjusts backlight value and the brightness shift value of multiple pixel with multiple adjustment amount segmentations.It should be noted that, the details that controller 16 performs aforesaid operations refers to the description of above-mentioned image regulating method, and the embodiment of the present invention does not repeat them here.
In sum, image regulating method of the present invention is applied to the display device with surround lighting detector, the environmentally ambient brightness that obtains of optical detector, display device is adjusted to corresponding display mode, and such as display device is higher in the pixel intensity of high-brightness environment, darker in the pixel intensity of low-light level environment; In order to overcome the defect that image frame overexposure is dazzling or dark portion details is unclear, after have adjusted pixel backlight value, also can apply mechanically the brightness shift value of the plurality of pixel of displacement correction function correction, can effectively revise dark portion details, avoid image frame to glimmer, and can make the picture of bright field scape soft not dazzling, dark scene details is clear undistorted.What also need one to carry is, the object that namely backlight value of pixel and brightness shift value be enough to reach the bright dark portion details revising image frame is only adjusted in the better situation of image regulating method of the present invention, right image regulating method is still alternative performs correlative value set-up procedure, and color-values set-up procedure, to make picture optimization, (namely above-mentioned steps 200 drives this surround lighting detector to detect ambient brightness, step 206 adjusts the backlight value of multiple pixels of this display device according to this ambient brightness, and the brightness shift value that step 208 adjusts the plurality of pixel according to displacement correction function is necessary step, and step 202, step 204, step 210 can determine whether to need according to the actual requirements).In better situation, image regulating method preferentially adjusts correlative value, then carries out backlight value adjustment; So also after the complete backlight value of adjustable, the correction of just execution correlative value, look closely actual demand and determine.
Refer to Figure 14, Figure 14 is the data volume mapping of image frame of display device 10 after image regulating method corrects of the embodiment of the present invention, and horizontal ordinate represents and carries out 16 deciles to the GTG of 0-255.As can be seen from Figure 14, no matter which display mode display device is switched to, the dark space of the plurality of pixel all can maintain the position close to brightness 0, and office mode (maximum brightness environment) has the bright field scape of high brightness, darkroom pattern (minimum brightness environment) then possesses the bright field scape of low-light level; Compare prior art, display device of the present invention significantly changes the soft picture that still can provide and be suitable for viewing and admiring at ambient brightness.
The present invention is described by above-mentioned related embodiment, but above-described embodiment is only enforcement example of the present invention.Must it is noted that the embodiment disclosed limit the scope of the invention.On the contrary, change done without departing from the spirit and scope of the present invention and retouching, all belong to scope of patent protection of the present invention.
Claims (23)
1. an image regulating method, is applied to display device, it is characterized in that, this display device has surround lighting detector, and this image regulating method includes:
This surround lighting detector is driven to detect ambient brightness;
The backlight value of multiple pixels of this display device is adjusted according to this ambient brightness; And
The brightness shift value of the plurality of pixel is adjusted according to displacement correction function.
2. image regulating method as claimed in claim 1, is characterized in that, separately comprise:
According to the correlative value of the plurality of pixel of image frame Content adaptation of this display device.
3. image regulating method as claimed in claim 2, it is characterized in that, this image regulating method first adjusts this correlative value of the plurality of pixel, then adjusts this backlight value of the plurality of pixel.
4. image regulating method as claimed in claim 1, is characterized in that, separately comprise:
The color-values of the plurality of pixel is adjusted according to color correction function.
5. image regulating method as claimed in claim 4, is characterized in that, according to saturation degree and the lightness of this this color-values of color correction function correction.
6. image regulating method as claimed in claim 4, it is characterized in that, when this display device is positioned at high-brightness environment, the saturation degree of this color-values is improved according to this color correction function, when this display device is positioned at low-light level environment, reduce this saturation degree and this lightness of this color-values according to this color correction function.
7. image regulating method as claimed in claim 1, it is characterized in that, the step driving this surround lighting detector to detect ambient brightness comprises: drive this surround lighting detector to obtain once detecting value second every N, and after collecting M detecting value, calculate the reference point of this M detecting value, and this reference point is detected the detecting result of this ambient brightness as this surround lighting detector.
8. image regulating method as claimed in claim 1, it is characterized in that, this display device comprises plurality of display modes, each display mode has specific trigger condition, compare the detecting result of this surround lighting detector and multiple trigger condition, this display device correspondingly to be switched to one of them of this plurality of display modes, when determining that this display device switches display mode, adjust this backlight value of the plurality of pixel of this display device according to this ambient brightness.
9. image regulating method as claimed in claim 1, it is characterized in that, the step adjusting the brightness shift value of the plurality of pixel according to displacement correction function comprises: when this ambient brightness reduces, reduce this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding raising of this displacement correction function, make the brightness of first specific pixel with minimum gray scale value higher than this first specific pixel without the brightness before the adjustment of this image regulating method.
10. image regulating method as claimed in claim 1, it is characterized in that, the step adjusting the brightness shift value of the plurality of pixel according to displacement correction function comprises: when this ambient brightness improves, improve this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding reduction of this displacement correction function, make the brightness of second specific pixel with minimum gray scale value lower than this second specific pixel without the brightness before the adjustment of this image regulating method.
11. image regulating methods as described in claim 9 or 10, is characterized in that, different weighting parameters is overlapped respectively the plurality of pixel being used in and having different grey decision-making, to adjust this brightness shift value of the plurality of pixel.
12. image regulating methods as claimed in claim 1, it is characterized in that, this backlight value of this corresponding display mode has specific adjusted amount, this specific adjusted amount is distinguished into multiple adjustment amounts by selectivity, and adjusts this backlight value and this brightness shift value of the plurality of pixel with the plurality of adjustment amount segmentation.
13. 1 kinds of display devices, is characterized in that, include:
Panel unit, has multiple pixel with show image picture;
Surround lighting detector, is used for detecting the ambient brightness of this panel unit position; And
Controller, is electrically connected this panel unit, and this controller drives this surround lighting detector to detect this ambient brightness, and adjusts the backlight value of the plurality of pixel according to this ambient brightness and adjust the brightness shift value of the plurality of pixel according to displacement correction function.
14. display devices as claimed in claim 13, is characterized in that, this controller is separately according to the correlative value of the plurality of pixel of image frame Content adaptation of this display device.
15. display devices as claimed in claim 14, it is characterized in that, this controller first adjusts this correlative value of the plurality of pixel, then adjusts this backlight value of the plurality of pixel.
16. display devices as claimed in claim 13, it is characterized in that, this controller separately adjusts the color-values of the plurality of pixel according to color correction function.
17. display devices as claimed in claim 16, it is characterized in that, this controller is according to the saturation degree of this this color-values of color correction function correction and lightness, and when this display device is positioned at high-brightness environment, this controller improves this saturation degree of this color-values according to this color correction function, when this display device is positioned at low-light level environment, this controller reduces this saturation degree and this lightness of this color-values according to this color correction function.
18. display devices as claimed in claim 13, it is characterized in that, this controller drives this surround lighting detector to obtain once detecting value second every N, and after collecting M detecting value, calculate the reference point of this M detecting value, and this reference point is detected the detecting result of this ambient brightness as this surround lighting detector.
19. display devices as claimed in claim 13, it is characterized in that, this display device comprises plurality of display modes, each display mode has specific trigger condition, this image regulating method compares the detecting result of this surround lighting detector and the plurality of trigger condition, this display device correspondingly to be switched to one of them of this plurality of display modes, when this controller determines that this display device switches display mode, this controller adjusts this backlight value of the plurality of pixel of this display device according to this ambient brightness.
20. display devices as claimed in claim 13, it is characterized in that, when this ambient brightness reduces, this controller reduces this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding raising of this displacement correction function, make the brightness of first specific pixel with minimum gray scale value higher than this first specific pixel without the brightness before the adjustment of this image regulating method.
21. display devices as claimed in claim 13, it is characterized in that, when this ambient brightness improves, this controller improves this backlight value of the plurality of pixel, again by this brightness shift value of the plurality of pixel of the corresponding reduction of this displacement correction function, make the brightness of second specific pixel with minimum gray scale value lower than this second specific pixel without the brightness before the adjustment of this image regulating method.
22. display devices as described in claim 20 or 21, is characterized in that, different weighting parameters is overlapped the plurality of pixel being used in the different grey decision-making of tool by this controller respectively, to adjust its brightness shift value.
23. display devices as claimed in claim 13, it is characterized in that, this backlight value of this corresponding display mode has specific adjusted amount, this specific adjusted amount is distinguished into multiple adjustment amounts by this controller selectivity, and adjusts this backlight value and this brightness shift value of the plurality of pixel with the plurality of adjustment amount segmentation.
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