CN107452355B - A kind of method of adjustment and device of dynamic contrast - Google Patents
A kind of method of adjustment and device of dynamic contrast Download PDFInfo
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- CN107452355B CN107452355B CN201710676141.9A CN201710676141A CN107452355B CN 107452355 B CN107452355 B CN 107452355B CN 201710676141 A CN201710676141 A CN 201710676141A CN 107452355 B CN107452355 B CN 107452355B
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/005—Adapting incoming signals to the display format of the display terminal
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
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Abstract
The embodiment of the present invention provides the method for adjustment and device of a kind of dynamic contrast, is related to field of display technology, can flash to avoid image.This method comprises: obtaining the first brightness value of each pixel in image to be displayed, and for each pixel in image to be displayed: in the case where the first brightness value of pixel is in the critical range of two neighboring first brightness section, the first brightness value of pixel can be adjusted to corresponding second brightness value of critical range；Wherein, corresponding second brightness value of each critical range, the value range of first brightness value includes at least two continuous first brightness sections, and the neighborhood centered on the critical value of the first brightness section of each adjacent two is constituted the critical range of two neighboring first brightness section.The embodiment of the present invention is used for the adjustment of dynamic contrast.
Description
Technical field
The present invention relates to field of display technology more particularly to the methods of adjustment and device of a kind of dynamic contrast.
Background technique
Display device can carry out analog signal to the input signal of every frame image and believe to number when showing every frame image
Number conversion, obtain the brightness value of each pixel, then draw brightness range (to generally use 0-255 to indicate the range of brightness)
It is divided into the brightness section of multiple equal parts, and the picture in each brightness section is in using brightness value in the statistics with histogram frame image
The number of element accounts for the ratio of total number of pixels, and three static contrast curves of preset basic, normal, high brightness section are calculated
Weight, the dynamic contrast curve of the frame image is calculated finally by weighting algorithm.Such display device can be according to this
Brightness value is inputted in each brightness section in the dynamic contrast curve of frame image and exports the functional relation of brightness value to each
The brightness of pixel exports after being adjusted.
But due in the prior art to image input signal carry out analog signal to digital signal conversion when can
There is a certain error for energy, therefore in the input signal of continuous multiple frames image in the identical situation of brightness value of a certain pixel,
The brightness value for being converted into this pixel after digital signal may be different, and the brightness value of the pixel may be made just to fall in two phases
(for example, the brightness value of the pixel is fallen in first frame image in adjacent brightness section (such as brightness section 1 and brightness section 2)
The brightness value of the pixel falls in brightness section 2 in brightness section 1, the second frame image, the brightness of the pixel in third frame image
Value falls in brightness section 1) the case where, so when being adjusted according to dynamic contrast curve to the pixel, in continuous multiple frames
The brightness value of the pixel may be turned down by height-regulating repeatedly in image, for example, the first frame image corresponding to brightness section 1
Dynamic contrast slope of a curve less than 1, the dynamic contrast slope of a curve of the second frame image corresponding to brightness section 2
Greater than 1, in the case that the dynamic contrast slope of a curve of third frame image is less than 1 corresponding to brightness section 3, the pixel
Brightness value can be turned down in first frame image, be turned up in the second frame image, in third frame image again turn down), thus
It may result in image in the handoff procedure of continuous multiple frames image to flash.
To solve the above-mentioned problems, dynamic contrast curve negotiating discrete sampling method is subjected to subregion in the prior art
(i.e. division brightness section), more can be close to real curve when adjusting to image degree of comparing in the case where the number of partitions is more
Continuously adjustable effect, however this method can still have that separation nearby judges inaccuracy, therefore the prior art is dynamic
The method of adjustment of state contrast can not fundamentally solve the image that may cause in the handoff procedure of continuous multiple frames image appearance
The problem of flashing.
Summary of the invention
The embodiment of the present invention provides the method for adjustment and device of a kind of dynamic contrast, can be to avoid in continuous multiple frames figure
Image flashes in the handoff procedure of picture.
In a first aspect, a kind of method of adjustment of dynamic contrast is provided, this method comprises:
The first brightness value of each pixel in image to be displayed is obtained, the value range of the first brightness value includes at least two
Continuous first brightness section, the neighborhood centered on the critical value of the first brightness section of each adjacent two are constituted two neighboring
The critical range of one brightness section；
For each pixel in image to be displayed: being in two neighboring first brightness section in the first brightness value of pixel
Critical range in the case where, the first brightness value of pixel is adjusted to corresponding second brightness value of critical range；Wherein, each
Critical range corresponds to second brightness value.
Optionally, the quantity of above-mentioned first brightness section is n, and n is greater than or equal to 2；
In n the first brightness sections, the equal length of preceding n-1 the first brightness sections, the length of n-th of brightness section
Less than or equal to the length of preceding n-1 the first brightness sections, the radius of neighborhood is less than or equal to preceding n-1 the first brightness sections
The half of length.
Optionally, setting n+1 continuous second brightness sections, the length of the 1st the second brightness section are preceding n-1 the
The length of the half of the length of one brightness section, (n+1)th the second brightness section is less than or equal to n-th of first brightness sections
The half of length, the length of the 2nd the second brightness section to n-th of second brightness sections are equal to preceding n-1 the first brightness sections
Length；
If it is any one into n-th of second brightness sections that the first brightness value of pixel is in the 2nd the second brightness section
In a second brightness section, then the first brightness value of pixel is adjusted to corresponding second brightness value of critical range includes:
In the case where the first brightness value of pixel is in the critical range of two neighboring first brightness section, by pixel
First brightness value be adjusted to the first brightness value of pixel where corresponding second brightness value of the second brightness section；Wherein, each
Second brightness section corresponds to second brightness value.
Optionally, corresponding second brightness value of the critical range of two neighboring first brightness section is the in image to be displayed
The first brightness value that one brightness value is in all pixels in two neighboring first brightness section is mapped according to dynamic contrast to close
It is the average value for all third brightness values being mapped to.
Optionally, the radius of neighborhood is the length of preceding n-1 the first brightness sections and the product of preset shift ratio.
Optionally, it is in the first brightness section in the first brightness value of pixel, and is not at two neighboring first brightness
In the case where the critical range in section, according to dynamic contrast mapping relations, it is bright that the first brightness value of pixel is mapped to third
Angle value.
The method of adjustment of dynamic contrast provided in an embodiment of the present invention, each pixel in available image to be displayed
First brightness value, and for each pixel in image to be displayed: it is bright that two neighboring first is in the first brightness value of pixel
In the case where the critical range for spending section, the first brightness value of pixel can be adjusted to corresponding second brightness of critical range
Value；Wherein, corresponding second brightness value of each critical range, the value range of the first brightness value include at least two continuous
First brightness section, the neighborhood centered on the critical value of the first brightness section of each adjacent two are constituted two neighboring first brightness
The critical range in section.So in the handoff procedure of continuous multiple frames image, even if because of the switching in continuous multiple frames image
There are errors in journey, and the case where make the brightness value of some pixel just fall in the critical range of two adjacent brightness sections
Under, the first brightness value of pixel can be adjusted to corresponding second brightness value of critical range, so as to avoid continuous more
Image flashes in the handoff procedure of frame image.
Second aspect provides a kind of display device, which includes:
Module is obtained, for obtaining the first brightness value of each pixel in image to be displayed, the value model of the first brightness value
Enclose the neighborhood including at least two continuous first brightness sections, centered on the critical value of the first brightness section of each adjacent two
Constitute the critical range of two neighboring first brightness section；
Processing module, for for each pixel in image to be displayed: being in adjacent two in the first brightness value of pixel
In the case where the critical range of a first brightness section, it is corresponding second bright that the first brightness value of pixel is adjusted to critical range
Angle value；Wherein, corresponding second brightness value of each critical range.
Optionally, the quantity of above-mentioned first brightness section is n, and n is greater than or equal to 2；
In n continuous first brightness sections, the equal length of preceding n-1 the first brightness sections, n-th of brightness section
Length be less than or equal to the length of preceding n-1 the first brightness section, the radius of neighborhood is less than or equal to preceding n-1 the first brightness
The half of the length in section.
Optionally, n+1 continuous second brightness sections of setting, the length of the 1st the second brightness section are the preceding n-1
The half of the length of a first brightness section, the length of (n+1)th the second brightness section be less than or equal to described n-th it is first bright
The half of the length in section is spent, the length of the 2nd the second brightness section to n-th of second brightness sections is equal to the preceding n-1
The length of first brightness section；
Processing module, if the first brightness value of the specific pixel be in the 2nd the second brightness section to n-th it is second bright
It spends in any one second brightness section in section, is then in two neighboring first brightness section in the first brightness value of pixel
Critical range in the case where, the second brightness section for the first brightness value of pixel being adjusted to where the first brightness value of pixel
Corresponding second brightness value；Wherein, corresponding second brightness value of each second brightness section.
Optionally, corresponding second brightness value of the critical range of two neighboring first brightness section is the in image to be displayed
The first brightness value that one brightness value is in all pixels in two neighboring first brightness section is mapped according to dynamic contrast to close
It is the average value for all third brightness values being mapped to.
Optionally, the radius of neighborhood is the length of preceding n-1 the first brightness sections and the product of preset shift ratio.
Optionally, processing module is also used to be in the first brightness section in the first brightness value of pixel, and is not at phase
In the case where the critical range of adjacent two the first brightness sections, according to dynamic contrast mapping relations, by the first brightness of pixel
Value is mapped to third brightness value.
For the technical effect of second aspect or its optional implementation, be specifically referred to it is above-mentioned to first aspect or
The description of the technical effect of its optional implementation, details are not described herein again.
The third aspect provides a kind of computer readable storage medium, and instruction is stored in the computer readable storage medium,
When the instruction is run on the display apparatus, moved described in first aspect or its optional implementation so that display device executes
The method of adjustment of state contrast.
Fourth aspect provides a kind of computer program product, when the computer program product is run on the display apparatus,
So that display device executes the method for adjustment of dynamic contrast described in first aspect or its optional implementation.
For the technical effect of the third aspect and fourth aspect, specifically it is referred to above-mentioned to first aspect or it is optional
The description of the technical effect of implementation, details are not described herein again.
Detailed description of the invention
Fig. 1 is in each first brightness for counting the first brightness value in image to be displayed to be provided in an embodiment of the present invention
The number of pixel in section accounts for the histogram of the ratio of total number of pixels；
Fig. 2 is dynamic contrast curve provided in an embodiment of the present invention；
Fig. 3 is the method schematic diagram of the method for adjustment of dynamic contrast provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The method of adjustment to dynamic contrast provided in an embodiment of the present invention and device are retouched in detail with reference to the accompanying drawing
It states.
In embodiments of the present invention, " illustrative " or " such as " etc. words for indicate make example, illustration or explanation.This
Be described as in inventive embodiments " illustrative " or " such as " any embodiment or design scheme be not necessarily to be construed as comparing
Other embodiments or design scheme more preferably or more advantage.Specifically, use " illustrative " or " such as " etc. words purport
Related notion is being presented in specific ways.
Term " first " and " second " in the embodiment of the present invention etc. are for distinguishing different objects, rather than for describing
Particular order.For example, the first brightness value and the second brightness value be for distinguishing different brightness values, rather than it is different bright for describing
The particular order of angle value.
In general, display device when showing every frame image, can carry out analog signal to the input signal of every frame image and arrive
The conversion of digital signal, and the data of obtained image to be displayed are transformed into YUV color space from RGB color, it obtains
The luminance component Y (being known as the first brightness value in the embodiment of the present invention) of each pixel.Dynamic contrast adjustment is being carried out to image
When, first (it is bright can be known as first in the present invention in each brightness section using the first brightness value in the statistics with histogram frame image
Degree section) in the number of pixel account for the distribution proportion of total number of pixels, illustratively, as shown in FIG. 1, FIG. 1 is for counting
The number of pixel of first brightness value in each first brightness section accounts for the straight of the ratio of total number of pixels in image to be displayed
Fang Tu, brightness range (i.e. the value range of the first brightness value) is 0-255 in the histogram, which is divided into multiple
Brightness section, the abscissa (i.e. X-axis) of histogram indicates the first brightness in Fig. 1, the ordinate (i.e. Y-axis) of the histogram indicate to
The number of pixel of first brightness value in each first brightness section accounts for the ratio of total number of pixels (in Fig. 1 in display image
It is embodied as percentage).
It then can be according to picture of first brightness value in each first brightness section in image to be displayed in the histogram
The number of element accounts for the ratio of total number of pixels, and three static contrast curves of preset basic, normal, high brightness section are calculated
Weight, the dynamic contrast mapping relations of the frame image, dynamic contrast mapping relations are calculated finally by weighting algorithm
It can be indicated by way of dynamic contrast curve.Illustratively, dynamic contrast curve can be as shown in Fig. 2, Fig. 2
Middle abscissa (i.e. X-axis) indicates the first brightness, and the ordinate (i.e. Y-axis) of the histogram indicates third brightness.
After getting dynamic contrast mapping relations according to the above method, it can use and be provided in the embodiment of the present invention
Dynamic contrast method of adjustment, to image to be displayed carry out dynamic contrast adjustment.
The executing subject of the method for adjustment of the dynamic contrast provided in the embodiment of the present invention can be display device,
It can be display chip.
As shown in figure 3, the method for adjustment of dynamic contrast provided in an embodiment of the present invention includes the following steps S101-
S104。
S101, the first brightness value for obtaining each pixel in image to be displayed.
Wherein, the value range of the first brightness value includes at least two continuous first brightness sections, with each adjacent two
Neighborhood centered on the critical value of first brightness section constitutes the critical range of two neighboring first brightness section.
Optionally, the quantity of the first above-mentioned brightness section can be n, and n is greater than or equal to 2.N the first brightness regions
Between in, the equal length of preceding n-1 the first brightness section, the length of n-th of brightness section be less than or equal to preceding n-1 it is first bright
Spend the length in section.The radius of above-mentioned neighborhood is less than or equal to the half of the length of preceding n-1 the first brightness sections.The present invention is real
It applies in example, the length of the first brightness section is the difference of the upper limit of the first brightness section and the lower limit of the first brightness section.
Illustratively, the value range of the first brightness value can be that 0-255 can be by the value as shown in table 1 or table 2
Range be divided into 16 the first brightness sections (in order to distinguish 16 first brightness sections, to 16 first brightness sections into
Line label respectively indicates 16 first brightness sections in Tables 1 and 2 using section 1 to section 16).
Table 1
| First brightness section number | First brightness section divides |
| Section 1 | [0,16) |
| Section 2 | [16,32) |
| Section 3 | [32,48) |
| Section 4 | [48,64) |
| Section 5 | [64,80) |
| Section 6 | [80,96) |
| Section 7 | [96,112) |
| Section 8 | [112,128) |
| Section 9 | [128,144) |
| Section 10 | [144,160) |
| Section 11 | [160,176) |
| Section 12 | [176,192) |
| Section 13 | [192,208) |
| Section 14 | [208,224) |
| Section 15 | [224,240) |
| Section 16 | [240,255] |
As can be seen that preceding 15 the first brightness sections (i.e. the section section 1- 15) in division mode shown in above-mentioned table 1
Length is identical, and the siding-to-siding block length of the 16th the first brightness section (i.e. section 16) is less than the length of preceding 15 the first brightness sections.
It optionally, can also be by the first brightness section in the embodiment of the present invention when carrying out the division of the first brightness section
Value range (such as 0-255) be divided into N number of section.Wherein, the length in each section are as follows: length=L/N.
[0,L/N)；
[L/N,2*L/N)；
[2L/N,3*L/N)；
…
[(N-1)L/N,N*L/N]。
Wherein, L=2n-1
, n indicates current image quality chip display capabilities are how many bit, for example, the brightness display range of 8bit is [0, (28-
1)], i.e., [0,255].
It illustratively, can be with division mode shown in table 2 by the value of the first brightness section by taking above-mentioned N is 16 as an example
Range (such as 0-255) is divided into 16 sections.
Table 2
| First brightness section number | First brightness section divides |
| Section 1 | [0,15.9375) |
| Section 2 | [15.9375,31.875) |
| Section 3 | [31.8750,47.8125) |
| Section 4 | [47.8125,63.75) |
| Section 5 | [63.75,79.6875) |
| Section 6 | [79.6875,95.625) |
| Section 7 | [95.625,111.5625) |
| Section 8 | [111.5625,127.5) |
| Section 9 | [127.5,143.4375) |
| Section 10 | [143.4375,159.375) |
| Section 11 | [159.375,175.3125) |
| Section 12 | [175.3125,191.25) |
| Section 13 | [191.25,207.1875) |
| Section 14 | [207.1875,223.125) |
| Section 15 | [223.125,239.0625) |
| Section 16 | [239.0625,255] |
It should be noted that the length of each first brightness section can be equal or unequal in present invention implementation,
The embodiment of the present invention is not construed as limiting.The first brightness sections of preceding N-1 shown in above-mentioned table 1 are equal and table 2 shown in be divided into N
The division mode of a first brightness section is the illustrative explanation that subsequent calculating is done for convenience.
Since in the embodiment of the present invention, the neighborhood centered on the critical value of the first brightness section of each adjacent two constitutes adjacent
The critical range of two the first brightness sections, the radius of neighborhood are less than or equal to the one of the length of preceding N-1 the first brightness sections
Half.Therefore referring to shown in above-mentioned table 1, by taking the radius of neighborhood is 1 as an example, the critical value in above-mentioned section 1 and section 2 is 16, then on
The critical range for stating section 1 and section 2 is [15,17].
Optionally, the radius of neighborhood is the above-mentioned preceding N-1 length of the first brightness section and multiplying for preset shift ratio
Product.Illustratively, (in the section section 1- as shown in Table 1 15 each area for the length of former the first brightness section of N-1 is 16
Between length be 16), if preset shift ratio be 1/8, radius=16*1/8=2 of neighborhood；If preset shift ratio
It is 1/16, then radius=16*1/16=1 of neighborhood.
It should be noted that above-mentioned preset shift ratio can be configured according to actual needs, the embodiment of the present invention
It is not construed as limiting.
In the embodiment of the present invention, the size of the radius of neighbourhood can be configured according to example case, according to the radius of neighbourhood
The length of the critical range of adjacent first brightness section of determining two be less than in two neighboring first brightness section each the
Subject to the length of one brightness section.When the radius of neighbourhood is specifically set in practical applications, it can be believed according to analog signal to data
Error size when number conversion determines, can be by neighborhood partly when the error when analog signal to data-signal is converted is smaller
Diameter is arranged smaller；When error when analog signal to data-signal is converted is larger, the radius of neighbourhood can be arranged big
It is some.
In the embodiment of the present invention, after executing above-mentioned S101, for each pixel in image to be displayed, it is performed both by following
Step S102-S104.
S102, judge whether the first brightness value of pixel is in the critical range of two neighboring first brightness section.
In the embodiment of the present invention, the critical range of two neighboring first brightness section is in the first brightness value of pixel
In the case of, execute following step S103；It is in the first brightness section, and is not at two neighboring in the first brightness value of pixel
In the case where the critical range of first brightness section, following step S104 is executed.
S103, the first brightness value of pixel is adjusted to corresponding second brightness value of the critical range.
Wherein, corresponding second brightness value of each critical range.
Illustratively, in conjunction with shown in table 1, by taking the radius of above-mentioned neighborhood is 1 as an example, each critical range and the second brightness value
Corresponding relationship can be as shown in table 3.
Table 3
Optionally, corresponding second brightness value of the critical range of two neighboring first brightness section is the in image to be displayed
One brightness value is in the first brightness value of all pixels in two neighboring first brightness section according to dynamic contrast mapping relations
The average value for all third brightness values being mapped to.Illustratively, it is assumed that the first brightness value is in above-mentioned table 3 in image to be displayed
Shown in pixel in section 1 and section 2 have 5, then can be according to dynamic contrast mapping relations (such as shown in above-mentioned Fig. 2
Dynamic contrast curve) the first brightness value of 5 pixels is mapped to 5 third brightness values, then further according to this 5
Three brightness values are averaged, and obtain second brightness value corresponding with the critical range in section 2 of section 1, i.e., shown in above-mentioned table 3
B1。
Optionally, the value range of the first brightness value includes N+1 continuous second brightness sections, the 1st the second brightness
The length in section is the half of the length of preceding N-1 the first brightness sections, and the length of N+1 the second brightness sections is less than or waits
In the half of the length of the first brightness section of n-th, the length etc. of the 2nd the second brightness section to the second brightness section of n-th
In the length of preceding N-1 the first brightness sections.
The method of above-mentioned setting N+1 continuous second brightness sections, compared to the simple brightness section that is multiplied
Quantity (such as the value range of the first brightness value is divided into 2N brightness section), the cost of display device hardware and software with
And the cost manually adjusted is lower.
Optionally, above-mentioned S103 can be realized by following S103A.
S103A, the second brightness section correspondence being adjusted to the first brightness value of pixel where the first brightness value of pixel
The second brightness value.
Illustratively, in conjunction with shown in table 1, by taking the radius of above-mentioned neighborhood is 1 as an example, the second brightness section and the second brightness value
Corresponding relationship can be as shown in table 4.
Table 4
In table 4,0-255 is divided into 17 the second brightness sections, in table 4 in order to distinguish 17 second brightness regions
Between, which is respectively indicated to section Q using section A, wherein the length of section A is first 15 first
The half of brightness section (i.e. the section section 1- 15), the length of section Q are less than the half of preceding 15 the first brightness sections.Interval B
Length to section P is identical as the length of preceding 15 the first brightness sections.Each second brightness of the above-mentioned interval B into section P
Section is equivalent to the critical range of above-mentioned section 1 first brightness section of every two into section 16.Such as above-mentioned interval B is equivalent to
The critical range in above-mentioned section 1 and section 2.
S104, according to dynamic contrast mapping relations, the first brightness value of pixel is mapped to third brightness value.
Illustratively, can dynamic contrast curve according to Fig.2, the first brightness value of pixel is mapped to third
Brightness value.
The method of adjustment of dynamic contrast provided in an embodiment of the present invention, each pixel in available image to be displayed
First brightness value, and for each pixel in image to be displayed: it is bright that two neighboring first is in the first brightness value of pixel
In the case where the critical range for spending section, the first brightness value of pixel can be adjusted to corresponding second brightness of critical range
Value；Wherein, corresponding second brightness value of each critical range, the value range of the first brightness value include at least two continuous
First brightness section, the neighborhood centered on the critical value of the first brightness section of each adjacent two are constituted two neighboring first brightness
The critical range in section.So in the handoff procedure of continuous multiple frames image, even if because of the switching in continuous multiple frames image
There are errors in journey, and the case where make the brightness value of some pixel just fall in the critical range of two adjacent brightness sections
Under, the first brightness value of pixel can be adjusted to corresponding second brightness value of critical range, so as to avoid continuous more
Image flashes in the handoff procedure of frame image.
As shown in figure 4, the embodiment of the present invention provides a kind of display device, which includes:
Module 11 is obtained, for obtaining the first brightness value of each pixel in image to be displayed, the value of the first brightness value
Range includes at least two continuous first brightness sections, the neighbour centered on the critical value of the first brightness section of each adjacent two
Domain constitutes the critical range of two neighboring first brightness section；
Processing module 12, for for each pixel in image to be displayed: being in adjacent in the first brightness value of pixel
In the case where the critical range of two the first brightness sections, the first brightness value of pixel is adjusted to critical range corresponding second
Brightness value；Wherein, corresponding second brightness value of each critical range.
Optionally, the quantity of above-mentioned first brightness section is N number of, and N is greater than or equal to 2；
In above-mentioned N number of continuous first brightness section, the equal length of preceding N-1 the first brightness sections, n-th brightness region
Between length be less than or equal to the length of preceding N-1 the first brightness section, the radius of neighborhood be less than or equal to preceding N-1 it is first bright
Spend the half of the length in section.
Optionally, setting N+1 continuous second brightness sections, the length of the 1st the second brightness section are preceding N-1 the
The length of the half of the length of one brightness section, N+1 the second brightness sections is less than or equal to the first brightness section of n-th
The half of length, the length of the 2nd the second brightness section to the second brightness section of n-th are equal to preceding N-1 the first brightness sections
Length.
Processing module 12, if the first brightness value specifically for pixel is in the 2nd the second brightness section to n-th second
In any one second brightness section in brightness section, then two neighboring first brightness region is in the first brightness value of pixel
Between critical range in the case where, the first brightness value of pixel is adjusted to the second brightness region where the first brightness value of pixel
Between corresponding second brightness value；Wherein, corresponding second brightness value of each second brightness section.
Optionally, corresponding second brightness value of the critical range of two neighboring first brightness section is the in image to be displayed
One brightness value is in the first brightness value of all pixels in two neighboring first brightness section according to dynamic contrast mapping relations
The average value for all third brightness values being mapped to.
Optionally, the radius of neighborhood is the length of preceding N-1 the first brightness sections and the product of preset shift ratio.
Optionally, processing module 12 are also used to be in the first brightness section in the first brightness value of pixel, and are not at
It is bright by the first of pixel according to dynamic contrast mapping relations in the case where the critical range of two neighboring first brightness section
Angle value is mapped to third brightness value.
The embodiment of the present invention also provides a kind of computer readable storage medium, is stored in the computer readable storage medium
Instruction, when the instruction is run on the display apparatus, so that display device executes dynamic contrast provided in an embodiment of the present invention
Method of adjustment.
The embodiment of the present invention also provides a kind of computer program product, when the computer program product is transported on the display apparatus
When row, so that display device executes the method for adjustment of dynamic contrast provided in an embodiment of the present invention.
Technical solution provided in an embodiment of the present invention substantially the part that contributes to existing technology in other words, or should
The all or part of technical solution can be realized by software program, hardware, firmware or any combination thereof.When use software
When program is realized, which includes one or more computer instructions.Load and execute on computers the meter
When calculation machine instructs, entirely or partly generate according to the process or function in the embodiment of the present invention.The computer can be general
Computer, special purpose computer, computer network or other programmable devices.The computer instruction can store can in computer
It reads in storage medium, or is transmitted from a computer readable storage medium to another computer readable storage medium, for example,
The computer instruction can from a web-site, computer, server or data center by it is wired (such as coaxial cable,
Optical fiber, Digital Subscriber Line (digital subscriber line, DSL)) mode or wireless (such as infrared, wireless, microwave etc.)
Mode is transmitted to another web-site, computer, server or data center.The computer readable storage medium can be meter
Any usable medium that calculation machine can access either includes integrated server, the data center etc. of one or more usable mediums
Data storage device.The usable medium can be magnetic medium (for example, floppy disk, disk, tape), optical medium (for example, number view
Frequency CD (digital video disc, DVD)) or semiconductor medium (such as solid state hard disk (solid state
Drives, SSD)) etc..
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only with the division of above-mentioned each functional module for example, in practical application, can according to need and by above-mentioned function
It can distribute and be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, more than completing
The all or part of function of description.The specific work process of the system, apparatus, and unit of foregoing description can refer to aforementioned side
Corresponding process in method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the module or
The division of unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units
Or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute
Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit
Indirect coupling or communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of method of adjustment of dynamic contrast characterized by comprising
The first brightness value of each pixel in image to be displayed is obtained, the value range of first brightness value includes at least two
Continuous first brightness section, the neighborhood centered on the critical value of the first brightness section of each adjacent two are constituted two neighboring
The critical range of one brightness section；
For each pixel in the image to be displayed: being in two neighboring first brightness in the first brightness value of the pixel
In the case where the critical range in section, the first brightness value of the pixel is adjusted to corresponding second brightness of the critical range
Value；Wherein, corresponding second brightness value of each critical range.
2. n is greater than or equal to the method according to claim 1, wherein the quantity of the first brightness section is n
2；
In n the first brightness sections, the equal length of preceding n-1 the first brightness sections, the length of n-th of brightness section is less than
Or the length equal to the preceding n-1 the first brightness sections；It is bright that the radius of the neighborhood is less than or equal to the preceding n-1 a first
Spend the half of the length in section.
3. according to the method described in claim 2, it is characterized in that, setting n+1 continuous second brightness sections, the 1st the
The length of two brightness sections is the half of the length of the preceding n-1 the first brightness sections, the length of (n+1)th the second brightness section
Degree is less than or equal to the half of the length of n-th of first brightness sections, the 2nd the second brightness section to n-th it is second bright
The length for spending section is equal to the length of the preceding n-1 the first brightness sections；
If it is any one into n-th of second brightness sections that the first brightness value of the pixel is in the 2nd the second brightness section
It is in a second brightness section, then described that first brightness value of the pixel is adjusted to corresponding second brightness of the critical range
Value includes:
In the case where the first brightness value of pixel is in the critical range of two neighboring first brightness section, by the pixel
First brightness value be adjusted to the first brightness value of the pixel where corresponding second brightness value of the second brightness section；Wherein,
Each corresponding second brightness value of second brightness section.
4. the method according to claim 1, wherein the critical range of two neighboring first brightness section is corresponding
Second brightness value is that the first brightness value is in all pictures in two neighboring first brightness section in the image to be displayed
The average value for all third brightness values that first brightness value of element is mapped to according to dynamic contrast mapping relations.
5. according to the method described in claim 2, it is characterized in that, the radius of the neighborhood is the preceding n-1 the first brightness
The product of the length in section and preset shift ratio.
6. the method according to claim 1, wherein
It is in the first brightness section in the first brightness value of the pixel, and is not at facing for two neighboring first brightness section
In the case where boundary's range, according to dynamic contrast mapping relations, the first brightness value of the pixel is mapped to third brightness value.
7. a kind of display device characterized by comprising
Module is obtained, for obtaining the first brightness value of each pixel in image to be displayed, the value model of first brightness value
Enclose the neighborhood including at least two continuous first brightness sections, centered on the critical value of the first brightness section of each adjacent two
Constitute the critical range of two neighboring first brightness section；
Processing module, for for each pixel in the image to be displayed: being in phase in the first brightness value of the pixel
In the case where the critical range of adjacent two the first brightness sections, the first brightness value of the pixel is adjusted to the critical range
Corresponding second brightness value；Wherein, corresponding second brightness value of each critical range.
8. device according to claim 7, which is characterized in that the quantity of the first brightness section is n, and n is greater than or equal to
2；
In n the first brightness sections, the equal length of preceding n-1 the first brightness sections, the length of n-th of brightness section is less than
Or the length equal to the preceding n-1 the first brightness sections；It is bright that the radius of the neighborhood is less than or equal to the preceding n-1 a first
Spend the half of the length in section.
9. device according to claim 8, which is characterized in that n+1 continuous second brightness sections of setting, the described 1st
The length of a second brightness section is the half of the length of the preceding n-1 the first brightness sections, (n+1)th second brightness
The length in section is less than or equal to the half of the length of n-th of first brightness sections, and the 2nd second brightness section is extremely
The length of n-th of second brightness sections is equal to the length of the preceding n-1 the first brightness sections；
The processing module, if the first brightness value specifically for the pixel is in the 2nd the second brightness section to n-th the
In any one second brightness section in two brightness sections, then two neighboring first brightness is in the first brightness value of pixel
In the case where the critical range in section, the first brightness value of the pixel is adjusted to where the first brightness value of the pixel
Corresponding second brightness value of second brightness section；Wherein, corresponding second brightness value of each second brightness section.
10. a kind of computer readable storage medium, instruction is stored in the computer readable storage medium, which is characterized in that
When described instruction is run on the display apparatus, so that the display device executes as claimed in any one of claims 1 to 6 move
The method of adjustment of state contrast.
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| CN115278104B (en) * | 2022-07-04 | 2024-02-09 | 浙江大华技术股份有限公司 | Image brightness adjustment method and device, electronic equipment and storage medium |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Video Technology Co., Ltd Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: HISENSE ELECTRIC Co.,Ltd. |