CN101604509B - Image-displaying method - Google Patents
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- CN101604509B CN101604509B CN2008100996375A CN200810099637A CN101604509B CN 101604509 B CN101604509 B CN 101604509B CN 2008100996375 A CN2008100996375 A CN 2008100996375A CN 200810099637 A CN200810099637 A CN 200810099637A CN 101604509 B CN101604509 B CN 101604509B
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Abstract
The invention discloses an image-displaying method used for a display device. The display device is provided with a light source module for providing a light source needed by the display device for displaying. The image-displaying method comprises the following steps: firstly, providing an original image comprising a plurality of original pixels presented by a plurality of first gray scale gray values; establishing a column diagram according to the first gray values; establishing an adjusting factor by the column diagram and adjusting the brightness of the light source provided by the light source module according to the adjusting factor; establishing a brightness factor and converting the original pixels into a plurality of output pixels according to the brightness factor so that the display device displays an output image according to the output pixels; presenting the output pixels by a plurality of second gray values which are respectively the products of the first gray values and the corresponding brightness factor.
Description
Technical field
The invention relates to a kind of image-displaying method, and particularly relevant for a kind of image display method that is used to have the display device of light source module.
Background technology
Along with the huge advance made of photoelectric technology and semiconductor element, flat display apparatus (flat paneldisplay), for example (Liquid Crystal Display LCD), develops and is applied in the various electronic product liquid crystal indicator rapidly.Because the plurality of advantages of liquid crystal indicator, for example low-power consumption, radiationless and high spatial utilization factor make liquid crystal indicator become the main product on the market.
Liquid crystal indicator comprises display panels and light source module.Display panels itself does not have luminous power, thereby need dispose the light source module and come for display panels provides area source below display panels, to realize Presentation Function.When liquid crystal indicator was activated, the light source module must constantly produce light source, and became in the liquid crystal indicator element of power consumption.In general, the power consumption of light source module accounts for 70% of whole liquid crystal indicator power consumption.
Therefore, there is the design of many liquid crystal indicator associated electrical products all to focus on the power consumption of saving the light source module.Modal mode is to set up different use patterns in liquid crystal indicator.The light source module provides the area source of varying strength under different use patterns, then the user can switch to different use patterns along with different environments for use.For instance, when being in holding state, electronic installation can reduce the intensity of area source and the electric weight consume of saving the light source module.
Yet, though can avoid unnecessary electric energy to expend and help to reach the function of power saving, the image distortion that liquid crystal indicator is presented with the intensity of using the mode adjustment area source.Therefore, the presentation content that further shows at liquid crystal indicator institute desire of the design that the portions of electronics product arranged is carried out the modulation of area source intensity.But the area source intensity of light source module changes, and still can make partial image can't keep contrast originally and makes image distortion.So existing design of electronic products is if desire to attach most importance to the kwh loss of saving the light source module, then the shown image of liquid crystal indicator possibly can't truly present.
Summary of the invention
The purpose of this invention is to provide a kind of image-displaying method, cause the problem of image distortion to solve the reduction of light source die set light source intensity.
The present invention proposes a kind of image-displaying method, is used for a display device, and wherein this display device has a light source module, required light source when providing display device to show.At first, provide a raw video, this raw video is made up of a plurality of original pixels.Each original pixels comprises a plurality of first gray-scale values.Set up a histogram according to first gray-scale value and number thereof.Choose wherein one first gray-scale value as a feature gray-scale value (ap1) by histogram, and a maximum gradation value (ap1 that can show according to display device
Max) and feature gray-scale value (ap1) set up out the adjustment factor (BACKDIM).Afterwards, adjust the light-source brightness that the light source module is provided according to adjusting the factor (BACKDIM).First grayvalue transition of each original pixels is become one first brightness value, and convert each first brightness value to one second brightness value to obtain a luminance factor, luminance factor is the ratio of second brightness value and first brightness value.Convert original pixels to a plurality of output pixels according to luminance factor, so that display device under the light-source brightness that the light source module is provided, shows an image output according to output pixel.Image output comprises these output pixels, and wherein each output pixel is made up of a plurality of second gray-scale values, and each second gray-scale value is first gray-scale value and the product of corresponding luminance factor.
In one embodiment of this invention, above-mentioned set up the number that histogrammic method comprises first gray-scale value that accumulative total is identical, so that histogrammic transverse axis is a gray-scale value and the longitudinal axis is a number.
In one embodiment of this invention, the above-mentioned adjustment factor (BACKDIM) meets
(formula 1), wherein A drops on 0～1 constant.
In one embodiment of this invention, the method that above-mentioned each first brightness value converts second brightness to comprises each first brightness is multiplied by the inverse of adjusting the factor, and each first brightness value is multiplied by the back reciprocal of adjusting the factor and represents second brightness value with maximum gradation value during greater than maximum gradation value.In addition, original picture information translation is become the method for output pixel comprise each first gray-scale value is multiplied by luminance factor to obtain second gray-scale value.
In one embodiment of this invention, the above-mentioned method that first brightness value is converted to second brightness value comprises the characteristic by the median decision raw video of first gray-scale value in histogram, and make first brightness value convert second brightness value to according to a particular kind of relationship, and particular kind of relationship is along with the characteristic changing of raw video.Above-mentioned particular kind of relationship comprises following situation.
Wherein a kind of particular kind of relationship for example is when first brightness value drops on 0 to a1, and second brightness value equals a1; When first brightness value dropped on a1 to a2, second brightness value dropped on a1 to maximum gradation value, and second brightness value and first brightness value are a linear relationship; And when first brightness value dropped on a2 to maximum gradation value, second brightness value was a maximum gradation value, wherein 0＜a1＜a2＜maximum gradation value.
Another kind of particular kind of relationship comprises that when first brightness value dropped on 0 to a1, second brightness value dropped on 0 to maximum gradation value, and second brightness value and first brightness value are a linear relationship; And first brightness value when dropping on a1～maximum gradation value, second brightness value is a maximum gradation value.
Above-mentioned particular kind of relationship also can be when first brightness value during smaller or equal to a1, and second brightness value is smaller or equal to 192 and be one first linear relationship with first brightness value, and wherein the slope of first linear relationship equals to adjust the inverse of the factor.When first brightness value was a1 to a2, second brightness value was 192 to b1, and second brightness value and first brightness value present one second linear relationship.When first brightness value was a2 to a3, second brightness value was b1 to b2, and second brightness value and first brightness value present trilinear relation.When first brightness value was a3 to 255, second brightness value was b2 to 255, and second brightness value and first measurement value present one the 4th linear relationship.The slope of the second above-mentioned linear relationship, trilinear relation and the 4th linear relationship is less than the inverse of adjusting the factor, 0＜a1＜a2＜a3＜255 wherein, and 192＜b1＜b2＜255.
The present invention is histogram with first gray-scale value statistics of the original pixels of each raw video, and sets up the adjustment factor of the luminous intensity of an adjustment light source module according to histogram.Therefore, the luminous intensity of light source module can be along with the characteristic of raw video modulation, to save unnecessary electric energy loss.In addition, the present invention more can convert original pixels output pixel to or convert output pixel to according to the above-mentioned adjustment factor according to certain relation according to above-mentioned histogram.The variation of the intensity of light source that is provided by the conversion of output pixel collocation light source module, image-displaying method of the present invention can provide the design of power saving and keep the authenticity of original pixels image simultaneously.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 is the process flow diagram of the image-displaying method of one embodiment of the invention.
Fig. 2 is the histogram of one embodiment of the invention.
Fig. 3 illustrates and is first brightness value of one embodiment of the invention and the transformational relation of second brightness value.
When Fig. 4 illustrates median for one embodiment of the invention and falls within histogram zone I, first brightness value
When Fig. 5 illustrates median for one embodiment of the invention and falls within histogram zone II, the relation between first brightness value and second brightness value.
When Fig. 6 illustrates median for one embodiment of the invention and falls within histogram zone III, the relation between first brightness value and second brightness value.
The main element symbol description:
110,120,130,140,150,152,154: step
210: curve
310,320,410,420,430,5 10,520,430,540,610,620: line segment
Embodiment
By the description of prior art as can be known, expend and adjust the image that the display light source of liquid crystal indicator often causes liquid crystal indicator to present and to keep original contrast, the state of picture distortion just takes place in order to save electric weight.For fear of such problem, the present invention proposes a kind of image-displaying method, and it is used for a display device.In fact, display device of the present invention has a light source module, shows required light source to provide.In other words, display device of the present invention is the display device of non-emissive type, and it for example is a liquid crystal indicator.
Fig. 1 is the process flow diagram of the image-displaying method of one embodiment of the invention.Please refer to Fig. 1, at first, carry out step 110, a raw video is provided, this raw video is made up of a plurality of original pixels, and each original pixels is suitable for a plurality of first gray-scale values represented.In the present embodiment, original pixels for example is the little color lump that presents different colours, can constitute image raw video just after these little color lump permutation and combination.In order to make original pixels, just these little color lumps present color miscellaneous, and each original pixels for example is made up of redness, green and the blue three primary colors mixing institute of different brightness.Therefore, first gray-scale value for example is these redness in the rgb color coordinate, green and blue brightness value.
Then, carry out step 120, set up a histogram according to first gray-scale value and number thereof.Fig. 2 is the histogram of one embodiment of the invention.Please refer to Fig. 2, set up the number that histogrammic method comprises identical first gray-scale value of accumulative total, so that histogrammic transverse axis is first gray-scale value and the longitudinal axis is a number.Curve 210 is the first grey value profile trend that original pixels presented of present embodiment.
With present embodiment, first gray-scale value that these gray-scale values of each pixel can present in the display device is 0 to 255, just has 256 numerical value altogether, represents that also the maximum gradation value of present embodiment is 255 certainly.Each pixel is represented with three first gray-scale values if display device has N pixel, then for histogrammic foundation, enough spaces need be arranged to store the data of 256 * 3N pen on the hardware design of display device.Therefore, also can utilize the mode of sublevel sampling to set up histogram in other embodiments to reduce the required storage area of hardware and to simplify calculation procedure.
For instance, when setting up histogram, per 16 gray-scale values can be decided to be a section.Then, these first gray-scale values in the same section are accumulated in the same storage location, then hardware only need be reserved the storage area of (256/16) * 3N document.Certainly, also can adopt per 32 gray-scale values to be decided to be a section and set up histogram in the middle of other designs, or stipulate section with other interval.Mode by the sublevel sampling is set up histogram, will make the image display method of present embodiment more simplify, and also helps to save required storage area of hardware and cost.
Then, please continue after setting up histogram, carry out step 130, set up one according to histogram and adjust the factor (BACKDIM) with reference to Fig. 1.In detail, method that set up to adjust the factor (BACKDIM) comprises by histogram and chooses one of them first gray-scale value as a feature gray-scale value (ap1).Then, a maximum gradation value (ap1 that can show according to display device
Max) and feature gray-scale value (ap1) be converted into and adjust the factor (BACKDIM), to meet
Wherein A drops on 0～1 constant.
With present embodiment, the maximum gradation value that display device can show is 255, and the maximal value that is to say first gray-scale value is 255, so set up ap1 when adjusting the factor (BACKDIM)
MaxBe 255.Certainly, the maximum gradation value that display device can present when other numerical value, ap1 then
MaxShould do change with this numerical value, 255 numerical value is only for illustrating in the present embodiment.In addition, the numerical values recited of constant A is actually that light source module by display device determined.For instance, the numerical values recited of A can be the minimum emitting brightness of light source module and the ratio of maximum emitting brightness.When the minimum emitting brightness of the light source module of certain display device was 0.5 times of maximum emitting brightness, the image brilliance method of adjustment that then is applied in this display device then was to make A=0.5.
In addition, in one raw video of present embodiment, when the quantity that constitutes first gray-scale value of original pixels was K, the mode of choosing of feature gray-scale value (ap1) for example was that first gray-scale value is arranged from small to large in regular turn, and selected the M% * K first gray-scale value with as feature gray-scale value (ap1).Certainly, the mode of choosing of feature gray-scale value (ap1) also can be that the first gray-scale value descending order is arranged, and selects (1-M%) * K first gray-scale value with as feature gray-scale value (ap1).At this, M is the defined numerical value of deviser, and they can be greater than 0 less than 100.Behind said method selected characteristic gray-scale value (ap1), just can calculate and adjust the factor (BACKDIM) by formula 1.
Afterwards, carry out step 140, adjust the light-source brightness that the light source module is provided according to adjusting the factor (BACKDIM).Thus, the area source that the light source module is provided just can be adjusted along with the Luminance Distribution of raw video, to reduce the electric energy loss of light source module.On the practice, when adjusting the factor (BACKDIM) and be 0.6, present embodiment is that the brightness of light source module is adjusted to 0.6 times of original brightness, certain 0.6 usefulness for illustrating only.In addition, the adjustment factor (BACKDIM) difference that different raw video calculated is so present embodiment can be adjusted the brightness of light source module to allow the energy dissipation of light source module reach minimum at each image.
Then, carry out step 150, under the light source that the light source module is provided, make display device show an image output.Because the light source that the light source module is provided not is to be maintained at original brightness after the adjustment of foundation aforesaid way.In addition, under the different intensities of light source, display device is if show with original pixels, and then the image that shows of display device may present different contrasts with raw video.Therefore, the present invention adjusts the luminosity of light source module except the characteristic of utilizing original pixels, more these original pixels is changed, so that the image that display device presented more meets real state.
The mode of conversion original pixels is shown in step 152 and step 154.At first, carry out step 152, set up a luminance factor.In the present embodiment, the method for building up of luminance factor for example is that these first grayvalue transition with each original pixels become one first brightness value, and convert each first brightness value to one second brightness value to obtain a luminance factor, wherein luminance factor is the ratio of second brightness value and first brightness value.What deserves to be mentioned is that the luminance factor of present embodiment is can be with the relation of each first brightness value and second brightness value different and change to some extent, that is luminance factor is not a certain value.
In the present embodiment, to become the mode of first brightness value for example be that rgb color coordinate with original pixels converts YUV brightness and color coordinate to first grayvalue transition.Because the mode that the rgb color coordinate is converted to YUV brightness and color coordinate is a prior art, and multiple computing method are arranged, and is no longer given unnecessary details at this.
Then, set up luminance factor after, then can carry out step 154, convert original pixels to a plurality of output pixels according to luminance factor.Via after conversion so, each output pixel is for example represented by a plurality of second gray-scale values, and each second gray-scale value for example is first gray-scale value and the product of corresponding luminance factor.That is to say that present embodiment system converts original pixels to corresponding output pixel by luminance factor and compensates with the brightness minimizing to the light source module.
In detail, below propose severally to convert first brightness value method of second brightness value to, to illustrate the account form of image output of the present invention.Certainly, the present invention does not limit and changes these pixels in which way.Every after the intensity of light source is adjusted, still the image that display device the is presented mode of comparing of keeping raw video can be applied in the image-displaying method of the present invention.
In the step 152 of Fig. 1, the mode that each first brightness value converts one second brightness value to for example is a inverse (1/BACKDIM) that each first brightness is multiplied by the aforesaid adjustment factor respectively obtaining second brightness value, and each first brightness value is multiplied by inverse (1/BACKDIM) back of adjusting the factor and represents second brightness value greater than maximum gradation value person with maximum gradation value.At this moment, the method that original pixels is converted to output pixel is each first gray-scale value is multiplied by corresponding luminance factor to obtain second gray-scale value.
So, the transformational relation of first brightness value and second brightness value can present the relation of painting as Fig. 3, and wherein both relations present as line segment 310 with shown in the line segment 320.Please refer to Fig. 3, the slope of line segment 310 is the inverse of the adjustment factor, and just represents second brightness value with maximum gradation value when each first brightness value is multiplied by the inverse of adjusting the factor greater than maximum gradation value person, that is to say that line segment 320 is a horizontal line section.In addition, the displayable maximum gradation value of the display device of present embodiment is 255, so line segment 320 is essentially the horizontal line section that second brightness value equals 255.
Relational expression according to Fig. 3 is adjusted raw frames, and then the Strength Changes of light source module just can obtain compensation by the adjustment of these gray-scale values.Fall within these original pixels of line segment 310 with first brightness value, when the brightness of light source module reduced specific ratio along with adjusting factor B ACKDIM, each output pixel of image output can be changed and reaches the effect of compensation approximately according to 1/BACKDIM.Therefore, the contrast that presented of last output picture can be to approach the contrast that raw frames presents.In other words, present embodiment also can make display device keep good display quality except the light luminance that can reduce the light source module and provide and save the kwh loss of light source module.
In addition, what deserves to be mentioned is, find according to the realistic simulation result calculated that the present invention is if adopt the mode of sublevel sampling to set up histogram, the output pixel that then finally obtains and the difference of original pixels still maintain within the permissible scope of error analysis.So present embodiment also helps to save the memory body requisite space if further adopt the mode of sublevel sampling to set up histogram.
Adjust the factor except direct utilization and set up the relation of first brightness value and second brightness value, the present invention also proposes also to change pixel according to the characteristic of raw video according to this with the relation of setting up first brightness value and second brightness value.On the practice, as shown in Figure 2, the judgment mode of the characteristic of raw video for example is earlier to be divided into three area I, II, III according to first gray-scale value 0 to a, a to b and b to 255 in histogram.The size of a and b is respectively 32 and 192 for instance, but not as limit.
Then, determine the characteristic of raw video by the median of first gray-scale value in histogram shown in Figure 2.In statistics, median is represented a numerical value in sample, population or the probability distribution, and median can be divided into equal two parts up and down with the numerical value set (abbreviation manifold) of sample.For limited manifold, one that finds out the middle after can just sorting all observed values as median.In other words, a number concentrates the numerical value that half is arranged at most less than median, and the numerical value that half is also arranged at most is greater than median.
At this, first gray-scale value of these in the histogram is promptly formed described manifold, and the median described in the present embodiment promptly is positioned at that middle first gray-scale value in the manifold for this reason.When median falls within area I, II or III, first brightness value and second brightness value will meet following several relational expressions that propose.That is to say that present embodiment can be to utilize median zone at place in histogram of first gray-scale value to decide first brightness value to convert second brightness value in which way to.
When above-mentioned median fell within area I, the relation between first brightness value and second brightness value as shown in Figure 4.Please refer to Fig. 4, when first brightness value dropped on 0 to a1, second brightness value was constantly equal to a1, just shown in line segment 410.When first brightness value dropped on a1 to a2, second brightness value dropped on a1 to 255, and second brightness value and first brightness value be a linear relationship, just shown in line segment 420.When first brightness value dropped on a2 to 255, second brightness value then perseverance was 255, i.e. the relation that illustrated of line segment 430, and 0＜a1＜a2＜255 wherein, and a1 for example can be 16.Certainly, a1 also can be other numerical value.In addition, the slope of line segment 420 equals to adjust the inverse (1/BACKDIM) of the factor.
In the histogram of raw video, median falls within area I and represents that then raw video is actually a dark partially image.In order to make overall image present bright contrast, present embodiment for example is that the brightness that makes first brightness value drop on the original pixels of a1～a2 improves.In addition, darker part presents false situation in the part raw video, second brightness value after the original pixels that first brightness value is lower than a1 is all adjusted as it with a1.With regard to part brighter in the raw video then is to make adjusted second brightness value be constantly equal to 255.
When above-mentioned median fell within area I I, the image that raw frames presented belonged to osculant.At this moment, can keep as shown in Figure 5 particular kind of relationship between first brightness value and second brightness value.Please refer to Fig. 5, when first brightness value during smaller or equal to a1, second brightness value is smaller or equal to 192 and be one first represented linear relationship of line segment 510 with first brightness value.The slope of line segment 510 equals to adjust the inverse of the factor (BACKDIM).When first brightness value was a1 to a2, first brightness value and second brightness value met second linear relationship shown in the line segment 520.At this moment, second brightness value is 192 to b1, and second brightness value and first brightness value present direct ratio.In addition, when first brightness value was a2 to a3, second brightness value was b1 to b2, and second brightness value and first brightness value present trilinear relation, promptly shown in line segment 530.When first brightness value was a3 to 255, second brightness value was b2 to 255, and second brightness value and first brightness value present one the 4th linear relationship as line segment 540.
The slope of the second above-mentioned linear relationship, trilinear relation and the 4th linear relationship is less than the inverse of adjusting the factor, 0＜a1＜a2＜a3＜255 wherein, and 192＜b1＜b2＜255.In other words, the slope of line segment 520, line segment 530 and line segment 540 is all less than the inverse (1/BACKDIM) of adjusting the adjustment factor that the light source module uses.Particularly, the slope of line segment 510 is for adjusting the inverse (1/BACKDIM) of the factor, so a1 192 multiply by the result of inverse (1/BACKDIM) gained of adjusting the factor, that is a1=192 * (1/BACKDIM).In addition, in the present embodiment, the size of a2, a3 is determined by a2=(255-a1) * 0.28+a1 (formula 2) and a3=(255-a1) * 0.31+a2 (formula 3).In addition, b1 and b2 are then determined by b3=255-(0.2 * (255-a2)) (formula 4), two formula of b2=b3-(0.48 * (a2-a1)) (formula 5).Certainly, the account form of a2 described above, a3, b1 and b2 only is one embodiment of the present invention.In other embodiments, first brightness value between a1～255 also can utilize a plurality of other formula and slopes of meeting to convert second brightness value to less than the line segment relation of 1/BACKDIM.
When the light-source brightness that the light source module is provided for power saving downgraded, the overall image that display device presented all can deepening.The just bright partially originally picture of part possibly can't present good contrast, so the image output that present embodiment adopts the mode of segmentation conversion that output pixel is formed more meets real situation.
Again furthermore, when above-mentioned median fell within area I II, the particular kind of relationship of second brightness value and first brightness value as shown in Figure 6.When first brightness value dropped on 0～a1, second brightness value dropped on 0～255, just shown in the line segment 610.First brightness value drops on a1～255 o'clock, and second brightness value then all with 255 expressions, also just meets the relation of line segment 620.In the raw video, the median of first brightness value falls within histogrammic area I II and represents that raw video belongs to brighter image.At brighter image, first brightness value of original pixels improved to convert second brightness value to may cause that the bigger original pixels information of many first brightness values is cropped to be fallen.So such image should not the big slope relation of ether carry out the adjustment of image.In the present embodiment, the size of a1 for example is 245, that is to say that present embodiment only small degree ground adjusts the brightness of original pixels to avoid the distortion of image output.
Adjust the brightness that the light source module is provided according to mode described above, can save the spent electric energy of display device effectively.Simultaneously, the present invention proposes to utilize certain relational expression to adjust each first gray-scale value of pixel, and the image that display device is presented is kept the sense of reality.In fact, in the image display method of the present invention, because when the design of power saving and deepening, the pixel of raw video can be avoided the phenomenon of the image generation distortion that display device finally presents via certain conversion when light source that the light source module provided.Therefore, not only image treatment method of the present invention reduced the power consumption of light source module effectively, also successfully make image output keep the quality of raw video.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (8)
1. an image-displaying method is used for a display device, and this display device has a light source module, shows required light source so that this display device to be provided, and this image-displaying method comprises:
One raw video is provided, and this raw video is made up of a plurality of original pixels, and respectively this original pixels is suitable for a plurality of first gray-scale values represented;
Set up a histogram according to those first gray-scale values and number thereof;
Choose wherein this first gray-scale value as a feature gray-scale value apl by this histogram;
The one maximum gradation value apl that can show according to this display device
MaxAnd this feature gray-scale value apl sets up an adjustment factor B ACKDIM;
ACKDIM adjusts the light-source brightness that this light source module is provided according to this adjustment factor B;
Those first grayvalue transition of this original pixels are respectively become one first brightness value, and respectively this first brightness value converts one second brightness value to obtain a luminance factor, this luminance factor is the ratio of this second brightness value and this first brightness value; And
Convert those original pixels to a plurality of output pixels according to this luminance factor, so that this display device is under the light-source brightness that this light source module is provided, show an image output according to those output pixels, this image output comprises those output pixels, wherein respectively this output pixel is suitable for representing with a plurality of second gray-scale values, and respectively this second gray-scale value is this first gray-scale value and the product of corresponding this luminance factor.
2. image-displaying method as claimed in claim 1 is characterized in that, sets up the number that this histogrammic method comprises identical first gray-scale value of accumulative total, is the number of those first gray-scale values so that this histogrammic transverse axis is gray-scale value and the longitudinal axis.
3. image-displaying method as claimed in claim 1 is characterized in that, the method for setting up this adjustment factor B ACKDIM comprises makes this maximum gradation value apl
MaxAnd this feature gray-scale value apl meets
Wherein A drops on 0～1 constant.
4. image-displaying method as claimed in claim 1, it is characterized in that, respectively this first brightness value method of converting this second brightness value to comprises the inverse that this first brightness value respectively is multiplied by this adjustment factor, and respectively this first brightness value inverse of being multiplied by this adjustment factor is represented this second brightness value greater than this maximum gradation value person with this maximum gradation value.
5. image-displaying method as claimed in claim 1 is characterized in that, the method that converts those first brightness values to those second brightness values comprises:
Determine the characteristic of this raw video by the median of those first gray-scale values in this histogram; And
Make those first brightness values convert those second brightness values to according to a particular kind of relationship, and this particular kind of relationship is along with the characteristic changing of this raw video.
6. image-displaying method as claimed in claim 5 is characterized in that, this particular kind of relationship comprises:
When those first brightness values dropped on 0 to a1, those second brightness values equaled a1;
When those first brightness values dropped on a1 to a2, those second brightness values dropped on a1 to this maximum gradation value, and those second brightness values and those first brightness values are a linear relationship; And
When those first brightness values dropped on a2 to this maximum gradation value, those second brightness values were this maximum gradation value, wherein 0＜a1＜a2＜this maximum gradation value.
7. image-displaying method as claimed in claim 5 is characterized in that, this particular kind of relationship comprises:
When those first brightness values dropped on 0 to a1, those second brightness values dropped on 0 to this maximum gradation value, and those second brightness values and those first brightness values are a linear relationship; And
When those first brightness values dropped on a1 to this maximum gradation value, those second brightness values were this maximum gradation value.
8. image-displaying method as claimed in claim 5 is characterized in that this maximum gradation value equals at 255 o'clock, and this particular kind of relationship comprises:
When those first brightness values during smaller or equal to a1, those second brightness values are smaller or equal to 192 and be one first linear relationship with those first brightness values, and wherein the slope of this first linear relationship equals the inverse of this adjustment factor; And
When those first brightness values were a1 to a2, those second brightness values were 192 to b1, and those second brightness values and those first brightness values present one second linear relationship;
When those first brightness values were a2 to a3, those second brightness values were b1 to b2, and those second brightness values and those first brightness values present trilinear relation; And
When those first brightness values are that a3 is during to this maximum gradation value, those second brightness values are that b2 is to this maximum gradation value, and those second brightness values and those first brightness values present one the 4th linear relationship, wherein the slope of this second linear relationship, this trilinear relation and the 4th linear relationship is adjusted the inverse of the factor less than this, 0＜a1＜a2＜a3＜this maximum gradation value wherein, and 192＜b1＜b2＜this maximum gradation value.
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| CN1637826A (en) * | 2003-12-29 | 2005-07-13 | Lg.菲利浦Lcd株式会社 | Method and apparatus for driving liquid crystal display |
| CN101075240A (en) * | 2006-08-25 | 2007-11-21 | 腾讯科技（深圳）有限公司 | Method and system for spanned acquiring data |
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| CN1637826A (en) * | 2003-12-29 | 2005-07-13 | Lg.菲利浦Lcd株式会社 | Method and apparatus for driving liquid crystal display |
| CN101075240A (en) * | 2006-08-25 | 2007-11-21 | 腾讯科技（深圳）有限公司 | Method and system for spanned acquiring data |
Non-Patent Citations (2)
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| JP特开2001-27890A 2001.01.30 |
| JP特开平6-102484A 1994.04.15 |
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