CN110189714A - The display methods and device, electronic equipment, medium of backlight are adjusted with region - Google Patents
The display methods and device, electronic equipment, medium of backlight are adjusted with region Download PDFInfo
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- CN110189714A CN110189714A CN201910556215.4A CN201910556215A CN110189714A CN 110189714 A CN110189714 A CN 110189714A CN 201910556215 A CN201910556215 A CN 201910556215A CN 110189714 A CN110189714 A CN 110189714A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention discloses a kind of display methods that backlight is adjusted with region, comprising: obtains image to be displayed information；Subregion is carried out to image to be displayed according to the image to be displayed information, and calculates the backlight value of each backlight area；Backlight simulation process is carried out to the backlight value of each backlight area, obtains the simulation backlight value of each backlight area；According to the simulation backlight value of each backlight area and the image to be displayed information, the pixel value of image to be displayed is compensated, pixel value after the compensation of the image to be displayed is obtained；Rear pixel value enhancing processing is compensated to the dark areas of the image to be displayed, obtains enhancing treated dark areas pixel value；According to pixel value after the compensation and enhancing treated the dark areas pixel value, the image to be displayed is shown.The invention also discloses a kind of display device, electronic equipment and storage mediums that backlight is adjusted with region.
Description
Technical field
The present invention relates to field of display technology, particularly relate to it is a kind of with region adjust backlight display methods and device,
Electronic equipment, medium.
Background technique
So-called local dimming (Local Dimming), i.e. the backlight area regulation technology of display.Traditional monitor uses
Backlight be entire area source, entire picture can brighten or dimmed simultaneously when adjusting brightness.And Local Dimming benefit
Traditional area source is replaced with the backlight of (the sometimes even hundreds of) compositions of multiple LED.By designing corresponding algorithm, backlight
LED can be adjusted according to the light and shade of image, to promote the contrast of image, and also can be reduced energy consumption.
It finds after study, it is mainly to concentrate in the energy consumption of reduction backlight that existing region backlight, which adjusts algorithm, a
Other method focuses on being promoted the contrast of final display image.But existing method when promoting contrast for dark areas and
The grayscale of high non-dark areas compressed, so that many detailed information of this two parts area loss, can not mention well
Rise viewing effect.Main purpose using Local dimming is exactly to reduce energy consumption and promote image display effect, existing
Method promotes degree but than relatively limited in terms of display effect.Therefore, it is necessary to a kind of good light-dimming methods to promote image most
Whole display effect.
Summary of the invention
In view of this, the first purpose of the embodiment of the present invention is, a kind of display side that backlight is adjusted with region is proposed
Method and device, electronic equipment, medium, can promote image display effect to a certain extent.
Based on above-mentioned purpose, the first aspect of the embodiment of the present invention is provided a kind of with the aobvious of region adjusting backlight
Show method, comprising:
Obtain image to be displayed information；
Subregion is carried out to image to be displayed according to the image to be displayed information, and calculates the backlight value of each backlight area；
Backlight simulation process is carried out to the backlight value of each backlight area, obtains the simulation backlight value of each backlight area；
According to the simulation backlight value of each backlight area and the image to be displayed information, to the picture of image to be displayed
Plain value compensates, and obtains pixel value after the compensation of the image to be displayed；
Rear pixel value enhancing processing is compensated to the dark areas of the image to be displayed, obtains enhancing treated dark space
Domain pixel value；
According to pixel value after the compensation and enhancing treated the dark areas pixel value, the figure to be shown is shown
Picture.
Optionally, rear pixel value enhancing is compensated to the dark areas of the image to be displayed to handle, comprising:
Determine dark areas pixel threshold；
The image to be displayed is divided into non-dark areas and dark areas according to the dark areas pixel threshold.
Optionally it is determined that dark areas pixel threshold, comprising:
Statistics of histogram is carried out to the image three channel maximum value of the image to be displayed；
According to the data of the statistics of histogram, ratio selected threshold pixel is chosen according to pixel quantity；
Using the grayscale value of the threshold pixels as the dark areas pixel threshold.
Optionally, the pixel value of image to be displayed is compensated, comprising:
It is compensated using pixel value of the Non-Linear Compensating type to image to be displayed.
Optionally, rear pixel value enhancing is compensated to the dark areas of the image to be displayed to handle, comprising:
Rear pixel value enhancing processing is compensated using dark areas of the dark primary defogging algorithm to the image to be displayed.
Optionally, according to pixel value after the compensation and enhancing treated the dark areas pixel value, display it is described to
In the step of showing image, the pixel value of each pixel is as follows in the image that finally shows:
Wherein, Ki,jIndicate the pixel value of each pixel in the image finally shown, Ni,jIt indicates to use dark primary defogging algorithm
Handle obtained dark areas pixel value, Mi,jExpression uses pixel value after the compensation obtained after nonlinear compensation, maxi,jIndicate institute
State the original triple channel maximum value of image to be displayed, IMAXFor dark areas pixel threshold.
Optionally, subregion is carried out to image to be displayed according to the image to be displayed information, and calculates each backlight area
Backlight value, comprising:
Calculate the area pixel maximum value that the image to be displayed corresponds to each backlight area；
Using the area pixel maximum value as the backlight value of corresponding backlight area.
Optionally, backlight simulation process is carried out to the backlight value of each backlight area, comprising:
Convolution is carried out using the backlight value of light spread function and each backlight area to carry out backlight simulation process.
The second aspect of the embodiment of the present invention provides a kind of display device that backlight is adjusted with region, comprising:
Module is obtained, for obtaining image to be displayed information；
Backlight value computing module for carrying out subregion to image to be displayed according to the image to be displayed information, and calculates
The backlight value of each backlight area；
Backlight analog module carries out backlight simulation process for the backlight value to each backlight area, obtains each backlight
The simulation backlight value in region；
Pixel compensation module, for according to the simulation backlight value of each backlight area and image to be displayed letter
Breath, compensates the pixel value of image to be displayed, obtains pixel value after the compensation of the image to be displayed；
Pixel enhances module, compensates rear pixel value enhancing processing for the dark areas to the image to be displayed, obtains
To enhancing treated dark areas pixel value；
Display module, for according to pixel value after the compensation and enhancing treated the dark areas pixel value, display
The image to be displayed.
Optionally, the pixel compensation module, for using Non-Linear Compensating type to the pixel value of image to be displayed into
Row compensation；
The pixel enhances module, for being mended using dark primary defogging algorithm to the dark areas of the image to be displayed
Repay rear pixel value enhancing processing.
Optionally, the pixel value of each pixel is as follows in the image that the display module is finally shown:
Wherein, Ki,jIndicate the pixel value of each pixel in the image finally shown, Ni,jIt indicates to use dark primary defogging algorithm
Handle obtained dark areas pixel value, Mi,jExpression uses pixel value after the compensation obtained after nonlinear compensation, maxi,jIndicate institute
State the original triple channel maximum value of image to be displayed, IMAXFor dark areas pixel threshold.
In terms of the third of the embodiment of the present invention, a kind of electronic equipment is provided, comprising:
At least one processor；And
The memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
A processor executes, so that at least one described processor is able to carry out the display side for adjusting backlight with region as mentioned
Method.
4th aspect of the embodiment of the present invention, provides a kind of computer-readable storage medium for being stored with computer program
Matter, wherein the computer program realizes the display methods with region adjusting backlight when executed by the processor
Step.
From above-described embodiment as can be seen that the display methods provided in an embodiment of the present invention for adjusting backlight with region, leads to
It crosses zoning backlight value and is accordingly compensated, then dark areas enhancing processing, last basis are carried out to compensated pixel value
Pixel value and enhancing treated the dark areas pixel value, show the image to be displayed, thus passing through after the compensation
The loss of image detail is in turn avoided while pixel compensation graduated increasing contrast, final dynamic backlight of arranging in pairs or groups obtains high comparison
The display effect of degree.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the attached drawing to embodiment is simply situated between below
It continues, it should be apparent that, the accompanying drawings in the following description merely relates to some embodiments of the present invention, rather than limitation of the present invention.
Fig. 1 is the flow diagram of the display methods provided in an embodiment of the present invention that backlight is adjusted with region；
Fig. 2A is the flow diagram distinguished in the embodiment of the present invention to dark areas；
Fig. 2 B is the flow diagram that dark areas pixel threshold is determined in the embodiment of the present invention；
Fig. 3 A is the schematic diagram of image to be displayed in the embodiment of the present invention；
Fig. 3 B is in the embodiment of the present invention according to the transformed image to be displayed schematic diagram of backlight value；
Fig. 3 C is that S type curve converts schematic diagram in the embodiment of the present invention；
Fig. 3 D is the transformed image to be displayed schematic diagram of S type curve in the embodiment of the present invention；
Fig. 3 E is the contrast schematic diagram of some Misty Images and mist elimination image；
Fig. 3 F be the embodiment of the present invention in by with region adjust backlight display methods finally realizes display wait show
Diagram is as schematic diagram；
Fig. 4 is the structural schematic diagram of the display device provided in an embodiment of the present invention that backlight is adjusted with region；
Fig. 5 is the structural representation of the device of the display methods provided in an embodiment of the present invention realized and there is region to adjust backlight
Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained under the premise of being not necessarily to creative work, shall fall within the protection scope of the present invention.
Unless otherwise defined, the technical term or scientific term that the disclosure uses should be tool in fields of the present invention
The ordinary meaning for thering is the personage of general technical ability to be understood." first ", " second " used in the disclosure and similar word are simultaneously
Any sequence, quantity or importance are not indicated, and are used only to distinguish different component parts.Equally, "one", " one " or
The similar word such as person's "the" does not indicate that quantity limits yet, but indicates that there are at least one." comprising " or "comprising" etc. are similar
Word mean to occur element or object before the word cover the element for appearing in the word presented hereinafter or object and its
It is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " be not limited to physics or
The connection of person's machinery, but may include electrical connection, it is either direct or indirect."upper", "lower", " left side ",
" right side " etc. is only used for indicating relative positional relationship, after the absolute position for being described object changes, then the relative positional relationship
May correspondingly it change.
The first aspect of the embodiment of the present invention proposes a kind of display methods that backlight is adjusted with region, Neng Gou
Image display effect is promoted to a certain extent.
As shown in Figure 1, the display methods for adjusting backlight with region, comprising:
Step 11: obtaining image to be displayed information.
It can be with for example, the image to be displayed is the current image that is shown, in the image to be displayed information
The image three channel value, etc. of resolution ratio, each pixel including the image to be displayed.
Image channel refers to individually red, green, blue the part under rgb color mode.That is, one complete
Whole image is made of three channels of RGB, their collective effects produce complete image.One width is completely schemed
Picture, three channels of RGB are indispensable.Even if appearing not to blue in image, can only say blue light brightness be 0 or
The red and green channel of each pixel value of person are not all 0, but cannot say that no blue channel exists.
Step 12: subregion being carried out to image to be displayed according to the image to be displayed information, and calculates each backlight area
Backlight value.
For example, the backlight value of different backlight areas can be adjusted individually when adjusting backlight using region；It is all
Backlight area is grouped together into complete backlight, corresponds to display area.And the image to be displayed is presented in display
In entire display area, when the image to be displayed corresponds to different backlight areas, backlight value is individually adjusted.Therefore,
It needs the distribution according to backlight area to carry out subregion to image to be displayed, uses the pixel of the image to be displayed in each region
Information calculates the backlight value of each backlight area.
Here, the backlight value refers to backlight area required brightness value or there are corresponding with brightness value when lighting
Driving voltage/current value of the region backlight of relationship, the numerical property referred to according to the difference of specific implementation, backlight value
May be different, it is not specifically limited herein.
Optionally, subregion is carried out to image to be displayed according to the image to be displayed information, and calculates each backlight area
Backlight value, comprising:
Calculate the area pixel maximum value that the image to be displayed corresponds to each backlight area；
Using the area pixel maximum value as the backlight value of corresponding backlight area.
Here, the calculation method of the backlight value of backlight area has used maximum value process, that is, uses the maximum value of area pixel
As backlight value, to meet the display requirement of the maximum pixel of pixel value.
Step 13: backlight simulation process being carried out to the backlight value of each backlight area, obtains the simulation of each backlight area
Backlight value.
Since there may be light diffusion phenomena at work for backlight, after the backlight value for obtaining each backlight area and in pixel
Need to simulate practical backlight situation before compensation, to avoid blockiness.
Optionally, backlight simulation process is carried out to the backlight value of each backlight area, comprising:
The backlight value of the light spread function obtained using measuring and each backlight area carries out convolution to be carried on the back
Optical analog processing.
In this way, process of convolution is carried out using light spread function and backlight value, so as to make the juncture area of backlight area
Backlight value a degree of smooth transition is presented, to achieve the effect that the practical backlight of simulation.Wherein, described to be surveyed using experiment
Surely the light spread function obtained for example can be carry out region adjust backlight test/test when measure being capable of preferable simulation
The light spread function of practical backlight effect, practical value can according to need adjustment, not carry out herein to specific value.
Step 14: according to the simulation backlight value of each backlight area and the image to be displayed information, to be shown
The pixel value of image compensates, and obtains pixel value after the compensation of the image to be displayed.
In this way, compensated accordingly according to pixel value of the smoothed out backlight to image to be displayed script, so as to
Collocation backlight obtains better display effect.
For example, the pixel value can refer to the corresponding gray value of pixel or have the brightness value etc. of corresponding relationship with gray value
Deng specific nature can be set according to actual conditions, herein with no restrictions.
Step 15: rear pixel value enhancing being compensated to the dark areas of the image to be displayed and is handled, enhancing processing is obtained
Dark areas pixel value afterwards.
Optionally, as shown in Figure 2 A, it compensates rear pixel value enhancing to the dark areas of the image to be displayed to handle, packet
It includes:
Step 151: determining dark areas pixel threshold；
Step 152: the image to be displayed is divided by non-dark areas and dark areas according to the dark areas pixel threshold.
Here, the dark areas refers to region partially dark in actual displayed in image to be displayed.
The dark areas pixel threshold can be optional pixel value, as long as can be by dark areas and image to be displayed
In other regions separate, specific value is not defined herein.
It should be noted that it is according to dark areas picture that image to be displayed, which is divided into the subregion of non-dark areas and dark areas, here
The subregion that plain threshold value carries out, the image to be displayed subregion carried out with the aforementioned distribution according to backlight area is not a concept.
Optionally, as shown in Figure 2 B, dark areas pixel threshold is determined, comprising:
Step 1511: statistics of histogram is carried out to the image three channel maximum value of the image to be displayed.
The grey level histogram is the function about grey level distribution, is the statistics to grey level distribution in image.Gray scale
Histogram is that all pixels in digital picture according to the size of gray value, are counted the frequency of its appearance.Grey level histogram is
The function of gray level, it indicates the number of the pixel in image with certain gray level, reflects certain gray scale in image and occurs
Frequency.Here statistics of histogram be pixel image three channel maximum value.
Step 1512: according to the data of the statistics of histogram, choosing ratio selected threshold picture according to pixel quantity
Element.
Here, it is the value being manually set that the pixel quantity, which chooses ratio, can according to need and is adjusted, does not make herein
It is specific to limit.For example, it may be 80%, because usually the gray value of preceding 80% pixel is all partially dark in grey level histogram.Because
Grey level histogram is the function about grey level distribution, for example, being chosen in grey level histogram and being in selected threshold pixel
The 80%th pixel in all pixels is as the threshold pixels.
Step 1513: using the grayscale value of the threshold pixels as the dark areas pixel threshold.
In this way, being calculated in the data where preceding 80%th pixel according to the data of the statistics of histogram
Grayscale value is as the dark areas pixel threshold, so as to preferably distinguish dark areas.
Step 16: according to pixel value after the compensation and enhancing treated the dark areas pixel value, display it is described to
Show image.
For example, pixel corresponding for dark areas, then shown using dark areas pixel value, non-dark areas then adopted
Pixel value is shown after compensating obtained in step 14.
Optionally, common pixel compensation method is linear compensates and two kinds of nonlinear compensation.Linear compensation method is simply
Think that the final display brightness of display is that backlight illumination is multiplied as a result, i.e. original image × complete with original input picture brightness
Bright backlight=compensation image × region backlight.Nonlinear compensation is that the gamma of display is considered on the basis of linear compensation
Effect joined the power operation that index is γ.Nonlinear method is that simple changing shows the whole of image compared to linear approach
Body brightness fails fundamentally to solve pixel overflow problem.
So using the Local Dimming scheme of above two method in order to which dynamic backlight of arranging in pairs or groups obtains ideal viewing
Effect, the pixel of image to be displayed (as shown in Figure 3A) can carry out transformation according to backlight value and get a promotion, the darker region of backlight
Pixel value promoted it is bigger, it is possible that pixel is overflowed (pixel value being calculated is greater than 255) phenomenon when conversion.And usually
Dark space area image can obtain a very big pixel value (in such as Fig. 3 B, the part on mountain is whitened) after conversion, due to reality
There are light leakage phenomenas there are certain gap and LCD screen for the backlight and true backlight that backlight simulation steps obtain, and can make
Dark areas is not so dark in practical viewing, to influence contrast.
In this way, there is no reach to mention in the pixel compensation stage for the compensation result obtained using linear compensation and nonlinear compensation
The purpose for showing contrast causes the promotion of viewing effect to be completely dependent on backlight variation.And it has been proposed that contrast enhancing side
Method -- two-step method, that is, the channel Y of image YUV color space is subjected to S type curve transformation (as shown in Figure 3 C) and logarithm drawing
Capable processing is put in, intuitively can actually enhance picture contrast, upper dynamic backlight energy of arranging in pairs or groups again in this way in the pixel compensation stage
It enough obtains higher contrast and promotes effect.But this method in curve conversion process by pixel value low area and high region
Grayscale compressed so that the image detail of dark areas and non-dark areas receive loss (in such as Fig. 3 D, the part mistake on mountain
It is black, do not see the details of the inside).Then, this is made up by the way of dark areas enhancing processing in the embodiment of the present invention
Loss.
Optionally, the step 14 compensated to the pixel value of image to be displayed, may particularly include:
It is compensated using pixel value of the Non-Linear Compensating type to image to be displayed.
The step 15 that rear pixel value enhancing processing is compensated to the dark areas of the image to be displayed, may particularly include:
Rear pixel value enhancing processing is compensated using dark areas of the dark primary defogging algorithm to the image to be displayed.
The characteristics of algorithm for image enhancement that dark primary defogging algorithm is proposed primarily directed to foggy image, Misty Image is exactly
Entire image whitens (as shown in Fig. 3 E the first row image), this and linear compensation and nonlinear compensation treated dark space area image
It characterizes identical.And defogging algorithm can calculate the high comparison after finding out defogging according to model I (x)=J (x) t (x)+A (1-t (x))
It spending image (as shown in Fig. 3 E the second row image), wherein I (x) is exactly the image (image to defogging) that we have had now,
J (x) is our fogless images to be restored, and A is global atmosphere light ingredient, usually a constant, and t (x) is transmissivity.
Because dark areas characterization image and foggy image after nonlinear compensation are very close to using dark primary defogging
It can effectively solve the problem that the whiting problem after dark areas pixel compensation after algorithm process, and can be by the detailed information of dark areas
Enhanced.
But the obtained image of nonlinear compensation only has dark areas that there are the whiting situation of this similar atomization, other regions
It is not present, and dark primary defogging algorithm has negative effect to non-dark scene area, so one defogging result of setting and non-linear
The proportion weighted formula of compensation result is sought as final result.
For example, according to pixel value after the compensation and enhancing treated the dark areas pixel value, display is described to aobvious
Diagram as the step of in, the pixel value of each pixel is as follows in the image that finally shows:
Wherein, Ki,jIndicate the pixel value of each pixel in the image finally shown, Ni,jIt indicates to use dark primary defogging algorithm
Handle obtained dark areas pixel value, Mi,jExpression uses pixel value after the compensation obtained after nonlinear compensation, maxi,jIndicate institute
State the original triple channel maximum value of image to be displayed, IMAXFor dark areas pixel threshold.
Made using above-mentioned formula: the darker place of image to be displayed, defogging algorithm in the result get over by shared specific gravity
Greatly, the brighter place of image to be displayed is just consistent with nonlinear compensation result as far as possible.
Result images collocation region backlight after entire algorithm process can be realized that bright region is brighter, dark area
Domain is darker.And the details of bright dark areas does not incur loss, while enhancing the details of dark areas, improves whole viewing
Effect (such as Fig. 3 F).
From above-described embodiment as can be seen that the display methods provided in an embodiment of the present invention for adjusting backlight with region, leads to
It crosses zoning backlight value and is accordingly compensated, then dark areas enhancing processing, last basis are carried out to compensated pixel value
Pixel value and enhancing treated the dark areas pixel value, show the image to be displayed, thus passing through after the compensation
The loss of image detail is in turn avoided while pixel compensation graduated increasing contrast, or even enhances the details letter of dark areas
Breath, final dynamic backlight of arranging in pairs or groups obtain the display effect of high contrast and improve the viewing that Local Dimming shows equipment
Experience provides good solution to use the display equipment of dynamic light adjustment to obtain good display effect.
The second aspect of the embodiment of the present invention proposes a kind of display methods that backlight is adjusted with region, Neng Gou
Image display effect is promoted to a certain extent.
As shown in figure 4, the display device for adjusting backlight with region, comprising:
Module 21 is obtained, for obtaining image to be displayed information；
Backlight value computing module 22 for carrying out subregion to image to be displayed according to the image to be displayed information, and is counted
Calculate the backlight value of each backlight area；
Backlight analog module 23 carries out backlight simulation process for the backlight value to each backlight area, obtains each back
The simulation backlight value in light region；
Pixel compensation module 24, for according to the simulation backlight value of each backlight area and image to be displayed letter
Breath, compensates the pixel value of image to be displayed, obtains pixel value after the compensation of the image to be displayed；
Pixel enhances module 25, compensates rear pixel value enhancing processing for the dark areas to the image to be displayed,
Obtain enhancing treated dark areas pixel value；
Display module 26, for showing according to pixel value after the compensation and enhancing treated the dark areas pixel value
Show the image to be displayed.
Optionally, the pixel compensation module, for using Non-Linear Compensating type to the pixel value of image to be displayed into
Row compensation；
The pixel enhances module, for being mended using dark primary defogging algorithm to the dark areas of the image to be displayed
Repay rear pixel value enhancing processing.
Optionally, the pixel value of each pixel is as follows in the image that the display module is finally shown:
Wherein, Ki,jIndicate the pixel value of each pixel in the image finally shown, Ni,jIt indicates to use dark primary defogging algorithm
Handle obtained dark areas pixel value, Mi,jExpression uses pixel value after the compensation obtained after nonlinear compensation, maxi,jIndicate institute
State the original triple channel maximum value of image to be displayed, IMAXFor dark areas pixel threshold.
Optionally, the pixel enhances module, is used for:
Determine dark areas pixel threshold；
The image to be displayed is divided into non-dark areas and dark areas according to the dark areas pixel threshold.
Optionally, the pixel enhances module, is used for:
Statistics of histogram is carried out to the image three channel maximum value of the image to be displayed；
According to the data of the statistics of histogram, ratio selected threshold pixel is chosen according to pixel quantity；
Using the grayscale value of the threshold pixels as the dark areas pixel threshold.
Optionally, the backlight value computing module, is used for:
Calculate the area pixel maximum value that the image to be displayed corresponds to each backlight area；
Using the area pixel maximum value as the backlight value of corresponding backlight area.
Optionally, the backlight analog module, is used for:
The backlight value of the light spread function obtained using measuring and each backlight area carries out convolution to be carried on the back
Optical analog processing.
Each embodiment of the above-mentioned display device that backlight is adjusted with region and showing with region adjusting backlight above-mentioned
Each embodiment for showing method is in corresponding relationship substantially, therefore, each embodiment of the display device that backlight is adjusted with region
Technical effect also with it is above-mentioned with region adjust backlight display methods it is essentially identical, details are not described herein.
Based on above-mentioned purpose, in terms of the third of the embodiment of the present invention, proposing described in a kind of execution, there is region to adjust
One embodiment of the device of the display methods of backlight.As shown in figure 5, described in execution provided by the invention to there is region to adjust
The hardware structural diagram of one embodiment of the device of the display methods of backlight.
As shown in figure 5, described device includes:
One or more processors 31 and memory 32, in Fig. 5 by taking a processor 31 as an example.
It can also include: input unit 33 and defeated for adjusting the device of the display methods of backlight described in the execution with region
Device 34 out.
Processor 31, memory 32, input unit 33 and output device 34 can be connected by bus or other modes,
In Fig. 5 for being connected by bus.
Memory 32 is used as a kind of non-volatile computer readable storage medium storing program for executing, can be used for storing non-volatile software journey
Sequence, non-volatile computer executable program and module, adjusting backlight with region as described in the embodiment of the present application
Corresponding program instruction/the module of display methods is (for example, attached acquisition module 21 shown in Fig. 4, backlight value computing module 22, backlight
Analog module 23, pixel compensation module 24, pixel enhancing module 25 and display module 26).Processor 31 is stored in by operation
Non-volatile software program, instruction and module in memory 32, thereby executing the various function application and number of server
According to processing, the i.e. display methods for adjusting backlight with region of realization above method embodiment.
Memory 32 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program required at least one function；Storage data area can be stored according to the display device that there is region to adjust backlight
Use created data etc..In addition, memory 32 may include high-speed random access memory, it can also include non-volatile
Memory, for example, at least a disk memory, flush memory device or other non-volatile solid state memory parts.In some realities
It applies in example, optional memory 32 includes the memory remotely located relative to processor 31, these remote memories can pass through
It is connected to the network to member user's behavior monitoring device.The example of above-mentioned network includes but is not limited to internet, intranet, office
Domain net, mobile radio communication and combinations thereof.
Input unit 33 can receive the number or character information of input, and generate and adjust with region the display of backlight
The related key signals input of the user setting and function control of device.Output device 34 may include that display screen etc. shows equipment.
One or more of modules are stored in the memory 32, when by one or more of processors 31
When execution, the display methods that backlight is adjusted with region in above-mentioned any means embodiment is executed.Have described in the execution
Region adjusts the embodiment of the device of the display methods of backlight, and technical effect is identical as aforementioned any means embodiment or class
Seemingly.
The embodiment of the present application provides a kind of non-transient computer storage medium, and the computer storage medium is stored with meter
The processing of the operation of the list items in above-mentioned any means embodiment can be performed in calculation machine executable instruction, the computer executable instructions
Method.The embodiment of the non-transient computer storage medium, technical effect it is identical as aforementioned any means embodiment or
It is similar.
Finally, it should be noted that those of ordinary skill in the art will appreciate that realizing the whole in above-described embodiment method
Or part process, it is that related hardware can be instructed to complete by computer program, the program can be stored in a calculating
In machine read/write memory medium, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, described
Storage medium can be magnetic disk, CD, read-only memory (Read-Only Memory, ROM) or random access memory
(Random Access Memory, RAM) etc..The embodiment of the computer program, technical effect and aforementioned any means
Embodiment is same or similar.
In addition, typically, device described in the disclosure, equipment etc. can be various electric terminal equipments, such as mobile phone, individual
Digital assistants (PDA), tablet computer (PAD), smart television etc. are also possible to large-scale terminal device, such as server, therefore this
Disclosed protection scope should not limit as certain certain types of device, equipment.Client described in the disclosure can be with electricity
The combining form of sub- hardware, computer software or both is applied in any one of the above electric terminal equipment.
In addition, being also implemented as the computer program executed by CPU, the computer program according to disclosed method
It may be stored in a computer readable storage medium.When the computer program is executed by CPU, executes and limited in disclosed method
Fixed above-mentioned function.
In addition, above method step and system unit also can use controller and for storing so that controller is real
The computer readable storage medium of the computer program of existing above-mentioned steps or Elementary Function is realized.
In addition, it should be appreciated that computer readable storage medium (for example, memory) as described herein can be it is volatile
Property memory or nonvolatile memory, or may include both volatile memory and nonvolatile memory.As example
And not restrictive, nonvolatile memory may include read-only memory (ROM), programming ROM (PROM), electrically programmable to son
ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory.Volatile memory may include arbitrary access
Memory (RAM), the RAM can serve as external cache.As an example and not restrictive, RAM can be with more
Kind form obtains, such as synchronous random access memory (DRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM
(DDR SDRAM), enhancing SDRAM (ESDRAM), synchronization link DRAM (SLDRAM) and directly RambusRAM (DRRAM).Institute
The storage equipment of disclosed aspect is intended to the memory of including but not limited to these and other suitable type.
Those skilled in the art will also understand is that, various illustrative logical blocks, mould in conjunction with described in disclosure herein
Block, circuit and algorithm steps may be implemented as the combination of electronic hardware, computer software or both.It is hard in order to clearly demonstrate
This interchangeability of part and software, with regard to various exemplary components, square, module, circuit and step function to its into
General description is gone.This function is implemented as software and is also implemented as hardware depending on concrete application and application
To the design constraint of whole system.Those skilled in the art can realize described in various ways for every kind of concrete application
Function, but this realization decision should not be interpreted as causing a departure from the scope of the present disclosure.
Various illustrative logical blocks, module and circuit, which can use, in conjunction with described in disclosure herein is designed to
The following component of function described here is executed to realize or execute: general processor, digital signal processor (DSP), dedicated collection
At circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, divide
Any combination of vertical hardware component or these components.General processor can be microprocessor, but alternatively, processing
Device can be any conventional processors, controller, microcontroller or state machine.Processor also may be implemented as calculating equipment
Combination, for example, the combination of DSP and microprocessor, multi-microprocessor, one or more microprocessors combination DSP core or any
Other this configurations.
The step of method in conjunction with described in disclosure herein or algorithm, can be directly contained in hardware, be held by processor
In capable software module or in combination of the two.Software module may reside within RAM memory, flash memory, ROM storage
Device, eprom memory, eeprom memory, register, hard disk, removable disk, CD-ROM or known in the art it is any its
In the storage medium of its form.Illustrative storage medium is coupled to processor, enables a processor to from the storage medium
Information is written to the storage medium in middle reading information.In an alternative, the storage medium can be with processor collection
At together.Pocessor and storage media may reside in ASIC.ASIC may reside in user terminal.It is replaced at one
In scheme, it is resident in the user terminal that pocessor and storage media can be used as discrete assembly.
In one or more exemplary designs, the function can be real in hardware, software, firmware or any combination thereof
It is existing.If realized in software, can be stored in using the function as one or more instruction or code computer-readable
It is transmitted on medium or by computer-readable medium.Computer-readable medium includes computer storage media and communication media,
The communication media includes any medium for helping for computer program to be transmitted to another position from a position.Storage medium
It can be any usable medium that can be accessed by a general purpose or special purpose computer.As an example and not restrictive, the computer
Readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disc memory apparatus, disk storage equipment or other magnetic
Property storage equipment, or can be used for carry or storage form be instruct or data structure required program code and can
Any other medium accessed by general or specialized computer or general or specialized processor.In addition, any connection is ok
It is properly termed as computer-readable medium.For example, if using coaxial cable, optical fiber cable, twisted pair, digital subscriber line
(DSL) or such as wireless technology of infrared ray, radio and microwave to send software from website, server or other remote sources,
Then the wireless technology of above-mentioned coaxial cable, optical fiber cable, twisted pair, DSL or such as infrared elder generation, radio and microwave is included in
The definition of medium.As used herein, disk and CD include compact disk (CD), laser disk, CD, digital versatile disc
(DVD), floppy disk, Blu-ray disc, wherein disk usually magnetically reproduce data, and CD using laser optics reproduce data.On
The combination for stating content should also be as being included in the range of computer-readable medium.
Disclosed exemplary embodiment, but disclosed exemplary embodiment should be infused, it should be noted that without departing substantially from
Under the premise of the scope of the present disclosure that claim limits, it may be many modifications and modify.According to disclosure described herein
Function, step and/or the movement of the claim to a method of embodiment are not required to the execution of any particular order.In addition, although this public affairs
The element opened can be described or be required in the form of individual, it is also contemplated that it is multiple, it is unless explicitly limited odd number.
It should be understood that it is used in the present context, unless the context clearly supports exceptions, singular " one
It is a " (" a ", " an ", " the ") be intended to also include plural form.It is to be further understood that "and/or" used herein is
Refer to any and all possible combinations including one or more than one project listed in association.
Above-mentioned embodiment of the present disclosure serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；It is above under the thinking of the embodiment of the present invention
It can also be combined between technical characteristic in embodiment or different embodiments, and exist and implement present invention as described above
Many other variations of the different aspect of example, for simplicity, they are not provided in details.Therefore, all in the embodiment of the present invention
Spirit and principle within, any omission, modification, equivalent replacement, improvement for being made etc. should be included in the embodiment of the present invention
Within protection scope.
Claims (13)
1. a kind of display methods for adjusting backlight with region characterized by comprising
Obtain image to be displayed information；
Subregion is carried out to image to be displayed according to the image to be displayed information, and calculates the backlight value of each backlight area；
Backlight simulation process is carried out to the backlight value of each backlight area, obtains the simulation backlight value of each backlight area；
According to the simulation backlight value of each backlight area and the image to be displayed information, to the pixel value of image to be displayed
It compensates, obtains pixel value after the compensation of the image to be displayed；
Rear pixel value enhancing processing is compensated to the dark areas of the image to be displayed, obtains enhancing treated dark areas picture
Element value；
According to pixel value after the compensation and enhancing treated the dark areas pixel value, the image to be displayed is shown.
2. the method according to claim 1, wherein compensating after image to the dark areas of the image to be displayed
Element value enhancing processing, comprising:
Determine dark areas pixel threshold；
The image to be displayed is divided into non-dark areas and dark areas according to the dark areas pixel threshold.
3. according to the method described in claim 2, it is characterized in that, determining dark areas pixel threshold, comprising:
Statistics of histogram is carried out to the image three channel maximum value of the image to be displayed；
According to the data of the statistics of histogram, ratio selected threshold pixel is chosen according to pixel quantity；
Using the grayscale value of the threshold pixels as the dark areas pixel threshold.
4. the method according to claim 1, wherein the pixel value to image to be displayed compensates, comprising:
It is compensated using pixel value of the Non-Linear Compensating type to image to be displayed.
5. according to the method described in claim 4, it is characterized in that, compensating after image to the dark areas of the image to be displayed
Element value enhancing processing, comprising:
Rear pixel value enhancing processing is compensated using dark areas of the dark primary defogging algorithm to the image to be displayed.
6. according to the method described in claim 5, it is characterized in that, after according to pixel value after the compensation and enhancing processing
Dark areas pixel value, in the step of showing the image to be displayed, the pixel value of each pixel is as follows in the image that finally shows:
Wherein, Ki,jIndicate the pixel value of each pixel in the image finally shown, Ni,jIt indicates to use dark primary defogging algorithm process
Obtained dark areas pixel value, Mi,jExpression uses pixel value after the compensation obtained after nonlinear compensation, maxi,jIndicate it is described to
Show the original triple channel maximum value of image, IMAXFor dark areas pixel threshold.
7. the method according to claim 1, wherein according to the image to be displayed information to image to be displayed into
Row subregion, and calculate the backlight value of each backlight area, comprising:
Calculate the area pixel maximum value that the image to be displayed corresponds to each backlight area；
Using the area pixel maximum value as the backlight value of corresponding backlight area.
8. the method according to claim 1, wherein the backlight value to each backlight area carries out backlight simulation
Processing, comprising:
Convolution is carried out using the backlight value of light spread function and each backlight area to carry out backlight simulation process.
9. a kind of display device for adjusting backlight with region characterized by comprising
Module is obtained, for obtaining image to be displayed information；
Backlight value computing module for carrying out subregion to image to be displayed according to the image to be displayed information, and calculates each back
The backlight value in light region；
Backlight analog module carries out backlight simulation process for the backlight value to each backlight area, obtains each backlight area
Simulation backlight value；
Pixel compensation module, it is right for the simulation backlight value and the image to be displayed information according to each backlight area
The pixel value of image to be displayed compensates, and obtains pixel value after the compensation of the image to be displayed；
Pixel enhances module, compensates rear pixel value enhancing processing for the dark areas to the image to be displayed, is increased
Strong treated dark areas pixel value；
Display module, for according to pixel value after the compensation and enhancing treated the dark areas pixel value, described in display
Image to be displayed.
10. device according to claim 9, which is characterized in that the pixel compensation module, for using nonlinear compensation
Mode compensates the pixel value of image to be displayed；
The pixel enhances module, after being compensated using dark primary defogging algorithm to the dark areas of the image to be displayed
Pixel value enhancing processing.
11. device according to claim 10, which is characterized in that each pixel in the image that the display module is finally shown
Pixel value it is as follows:
Wherein, Ki,jIndicate the pixel value of each pixel in the image finally shown, Ni,jIt indicates to use dark primary defogging algorithm process
Obtained dark areas pixel value, Mi,jExpression uses pixel value after the compensation obtained after nonlinear compensation, maxi,jIndicate it is described to
Show the original triple channel maximum value of image, IMAXFor dark areas pixel threshold.
12. a kind of electronic equipment characterized by comprising
At least one processor；And
The memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
It manages device to execute, so that at least one described processor is able to carry out the method according to claim 1.
13. a kind of computer readable storage medium for being stored with computer program, wherein the computer program is by processor
The step of method of any of claims 1-8 is realized when execution.
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Application publication date: 20190830 |