CN105551425B - A kind of image processing method and device - Google Patents
A kind of image processing method and device Download PDFInfo
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- CN105551425B CN105551425B CN201610137256.6A CN201610137256A CN105551425B CN 105551425 B CN105551425 B CN 105551425B CN 201610137256 A CN201610137256 A CN 201610137256A CN 105551425 B CN105551425 B CN 105551425B
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
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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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
Abstract
The invention discloses a kind of image processing method and devices, according to each frame image to be displayed of reception, it is identical as the polarity of the polar signal of previous frame image to be displayed in the polar signal for determining this frame image to be displayed, and when determining whether this frame image to be displayed relative to previous frame image to be displayed is tableaux, correspondence is compensated according to preset first, depression of order processing is carried out to the grayscale of this frame image to be displayed.Due to that frame image to be displayed inverted to polar signal polarity under display tableaux, i.e. the grayscale of polar signal that frame image to be displayed identical with previous frame polarity carries out depression of order processing compensation, therefore, in the case where the refreshing frequency of common voltage and display that image is shown need not be changed, can avoid occurring when display tableaux to greatest extent overcharge phenomenon and caused by film flicker problem, and power consumption will not be brought to rise and the unequal side effect of picture quality again.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of image processing methods and device.
Background technology
Currently, being by polarity (POL) signal to the polarity of the data-signal of the data line load of display panel (Panel)
Polarity controlled, i.e. the polarity in the polarity determination data signal of POL signals, in general, when POL signals are high potential signal
Data-signal is positivity signal, and when POL signals are low-potential signal, data-signal is negativity signal.It is adjacent generally for ensureing
The data-signal polarity of two frames is on the contrary, POL signals should be different high low-potential signals in adjacent two frame, POL signals at this time
Inversion mode is known as common (Normal) POL.
Further, line image retention is eliminated in order to reduce, the inversion mode of POL signals can also use reversion
(Inversion) POL, as shown in Figure 1, when application inverts POL, the POL signal polarities that can have adjacent two frames M and N are identical
The case where, i.e., when former frame POL signals are high potential, a later frame POL signals should be low potential, but in a later frame POL signals
Reversion, which has occurred, becomes high potential, causes the POL polarity of adjacent two frame identical, if the same or similar static state of display image at this time
When picture, the data-signal of identical voltage can be filled in adjacent two frame, at this time occur POL signals reversion that frame, i.e., with
That identical frame of POL signal polarities of previous frame can overcharge phenomenon, more serious scintillation be caused, to influence
Picture display quality.
Invention content
In view of this, an embodiment of the present invention provides a kind of image processing method and device, to reduce existing POL letters
Existing film flicker phenomenon when tableaux is shown under number reversing mode.
Therefore, a kind of image processing method provided in an embodiment of the present invention, including：
Receive each frame image to be displayed；
According to each frame image to be displayed of reception, determine whether the polar signal of each frame image to be displayed waits showing with previous frame
The polarity of the polar signal of diagram picture is identical, and whether determining each frame image to be displayed is quiet relative to previous frame image to be displayed
State picture；
It is identical as the polarity of the polar signal of previous frame image to be displayed in the polar signal for determining this frame image to be displayed,
And when determining that described frame image to be displayed is tableaux, correspondence is compensated according to preset first, described frame is waited for
Show that the grayscale of image carries out depression of order processing.
In one possible implementation, in above-mentioned image processing method provided in an embodiment of the present invention, the basis
Receive each frame image to be displayed, determine each frame image to be displayed polar signal whether the polarity with previous frame image to be displayed
The polarity of signal is identical, and whether determining each frame image to be displayed is tableaux relative to previous frame image to be displayed, specifically
Including：
Determine each frame image to be displayed polar signal whether the polarity phase with the polar signal of previous frame image to be displayed
Together；
It is identical as the polarity of the polar signal of previous frame image to be displayed in the polar signal for determining this frame image to be displayed
When, according to each frame image to be displayed of reception, determine described frame image to be displayed relative to previous frame image to be displayed whether
For tableaux.
In one possible implementation, in above-mentioned image processing method provided in an embodiment of the present invention, it is described according to
Preset first compensation correspondence carries out depression of order processing to the grayscale of described frame image to be displayed, specifically includes：
According to preset static grayscale the first compensation correspondence corresponding with compensation grayscale, determine that described frame waits showing
Grayscale value of the grayscale value of each pixel after compensation in diagram picture；Wherein, in described frame image to be displayed after each pixel compensation
Grayscale value be not more than grayscale value of each pixel before compensation.
In one possible implementation, in above-mentioned image processing method provided in an embodiment of the present invention, this is being determined
After the polar signal of frame image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed, further include：
Determine whether the polar signal of the next frame image to be displayed of described frame image to be displayed waits showing with described frame
The polarity of the polar signal of diagram picture is on the contrary, and determine the next frame image to be displayed relative to described frame image to be displayed
Whether it is tableaux；
It is to be shown in the polar signal and described frame for determining the next frame image to be displayed of described frame image to be displayed
The polarity of the polar signal of image on the contrary, and when determining that the next frame image to be displayed is tableaux, according to preset the
Two compensation correspondences carry out liter rank to the grayscale of the next frame image to be displayed and handle.
In one possible implementation, in above-mentioned image processing method provided in an embodiment of the present invention, the determination
The polar signal of the next frame image to be displayed of described frame image to be displayed whether the polarity with described frame image to be displayed
The polarity of signal is on the contrary, and determine whether the next frame image to be displayed relative to described frame image to be displayed is static picture
Face；It specifically includes：
Determine whether the polar signal of the next frame image to be displayed of described frame image to be displayed waits showing with described frame
The polarity of the polar signal of diagram picture is opposite；
It is to be shown in the polar signal and described frame for determining the next frame image to be displayed of described frame image to be displayed
When the polarity of the polar signal of image is opposite, determine that the next frame image to be displayed is relative to described frame image to be displayed
No is tableaux.
In one possible implementation, in above-mentioned image processing method provided in an embodiment of the present invention, it is described according to
Preset second compensation correspondence carries out liter rank to the grayscale of the next frame image to be displayed and handles, specifically includes：
According to preset static grayscale the second compensation correspondence corresponding with compensation grayscale, determine that the next frame waits for
Show grayscale value of the grayscale value of each pixel in image after compensation；Wherein, each pixel is mended in the next frame image to be displayed
Grayscale value after repaying is not less than grayscale value of each pixel before compensation.
In one possible implementation, in above-mentioned image processing method provided in an embodiment of the present invention, static grayscale
The first compensation correspondence corresponding with compensation grayscale or the second compensation correspondence are determined by following manner：
According to the step value of setting, each first static grayscale is determined in displayable grayscale；
The reality that debugging is determined is shown under conditions of showing tableaux for each described first static grayscale
Show that luminance difference can not differentiate the grayscale of the maximum difference in luminance of film flicker less than human eye as the described first static grayscale correspondence
First compensation grayscale；
When step value is more than 1, the in the described first static grayscale section of adjacent two is determined using following formula
Two static grayscale corresponding second compensate grayscale：
Wherein, m is the second static grayscale, and M is that the second static grayscale corresponding second compensates grayscale, and A is step value, and [] is
Rounding symbol, b are that the first static grayscale 0+nA corresponding first compensates grayscale, and a is that first static state grayscale 0+ (n-1) A is corresponding
First compensation grayscale, n are the integer more than 1.
Correspondingly, the embodiment of the present invention additionally provides a kind of image processing apparatus, including：
Receiving unit, for receiving each frame image to be displayed；
Polarity determination unit determines the polarity letter of each frame image to be displayed for each frame image to be displayed according to reception
It is number whether identical as the polarity of the polar signal of previous frame image to be displayed, and determine each frame image to be displayed relative to previous frame
Whether image to be displayed is tableaux；
Processing unit, for determining that the polar signal of this frame image to be displayed and previous frame are to be shown in the determination unit
The polarity of the polar signal of image is identical, and when determining that described frame image to be displayed is tableaux, according to preset first
Correspondence is compensated, depression of order processing is carried out to the grayscale of described frame image to be displayed.
In one possible implementation, in above-mentioned image processing apparatus provided in an embodiment of the present invention, the determination
Unit specifically includes：First polarity determination unit, for determining whether the polar signal of each frame image to be displayed waits for previous frame
Show that the polarity of the polar signal of image is identical；
First tableaux determination unit, the pole for determining this frame image to be displayed in the first polarity determination unit
Property signal it is identical as the polarity of the polar signal of previous frame image to be displayed when, according to each frame image to be displayed of reception, determine
Whether described frame image to be displayed is tableaux relative to previous frame image to be displayed.
In one possible implementation, in above-mentioned image processing apparatus provided in an embodiment of the present invention, the processing
Unit is specifically used for, according to preset static grayscale the first compensation correspondence corresponding with compensation grayscale, determining described
Grayscale value of the grayscale value of each pixel after compensation in frame image to be displayed；Wherein, each pixel in described frame image to be displayed
Grayscale value after compensation is not more than grayscale value of each pixel before compensation.
In one possible implementation, in above-mentioned image processing apparatus provided in an embodiment of the present invention, the determination
Unit is additionally operable to determine that the polar signal of the next frame image to be displayed of described frame image to be displayed and described frame are to be shown
Whether the polarity of the polar signal of image is on the contrary, and determine the next frame image to be displayed relative to described frame figure to be shown
Seem it is no be tableaux；
The processing unit is additionally operable to determine that the next frame of described frame image to be displayed is to be shown in the determination unit
The polarity of the polar signal of image and the polar signal of described frame image to be displayed is on the contrary, and determine that the next frame is to be shown
When image is tableaux, correspondence is compensated according to preset second, the grayscale of the next frame image to be displayed is carried out
Rise rank processing.
In one possible implementation, in above-mentioned image processing apparatus provided in an embodiment of the present invention, the determination
Unit specifically includes：Second polarity determination unit, the next frame image to be displayed for determining described frame image to be displayed
Whether polar signal is opposite with the polarity of the polar signal of described frame image to be displayed；
Second tableaux determination unit, for determining described frame image to be displayed in the second polarity determination unit
Next frame image to be displayed polar signal it is opposite with the polarity of the polar signal of described frame image to be displayed when, determine institute
Whether state next frame image to be displayed relative to described frame image to be displayed is tableaux.
In one possible implementation, in above-mentioned image processing apparatus provided in an embodiment of the present invention, the processing
Unit is specifically used for compensating correspondence according to preset static grayscale corresponding with compensation grayscale second, determine it is described under
Grayscale value of the grayscale value of each pixel after compensation in one frame image to be displayed；Wherein, each in the next frame image to be displayed
Grayscale value after pixel compensation is not less than grayscale value of each pixel before compensation.
In one possible implementation, in above-mentioned image processing apparatus provided in an embodiment of the present invention, the processing
Preset static state grayscale is corresponding with the corresponding first compensation correspondence of compensation grayscale or second compensation in unit
Relationship is determined by following manner：According to the step value of setting, each first static grayscale is determined in displayable grayscale；Needle
To each described first static grayscale, under conditions of showing tableaux, the actual displayed luminance difference determined will be debugged
It is compensated as the described first static grayscale corresponding first less than the grayscale for the maximum difference in luminance that human eye can not differentiate film flicker
Grayscale；When step value is more than 1, determine that second in the described first static grayscale of adjacent two section is quiet using following formula
The corresponding second compensation grayscale of state grayscale：
Wherein, m is the second static grayscale, and M is that the second static grayscale corresponding second compensates grayscale, and A is step value, and [] is
Rounding symbol, b are that the first static grayscale 0+nA corresponding first compensates grayscale, and a is that first static state grayscale 0+ (n-1) A is corresponding
First compensation grayscale, n are the integer more than 1.
The advantageous effect of the embodiment of the present invention includes：
A kind of image processing method and device provided in an embodiment of the present invention, including：Receive each frame image to be displayed；According to
Receive each frame image to be displayed, determine each frame image to be displayed polar signal whether the polarity with previous frame image to be displayed
The polarity of signal is identical, and whether determining each frame image to be displayed is tableaux relative to previous frame image to be displayed；True
The polar signal of fixed this frame image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed, and determines that this frame waits for
When showing that image is tableaux, correspondence is compensated according to preset first, the grayscale of this frame image to be displayed is dropped
Rank is handled.Due to that frame image to be displayed, i.e. polar signal inverted to polar signal polarity under display tableaux
The grayscale of that frame image to be displayed identical with previous frame polarity carries out depression of order processing compensation, therefore, need not more change plan
Common voltage as shown in and in the case of the refreshing frequency of display, may when can avoid display tableaux to greatest extent
Occur overcharge phenomenon and caused by film flicker problem, and power consumption will not be brought to rise again and picture quality is unequal secondary makees
With.
Description of the drawings
Fig. 1 is the time diagram of POL signals reversing mode in the prior art；
Fig. 2 is one of the flow diagram of image processing method provided in an embodiment of the present invention；
Fig. 3 is that human eye can not differentiate film flicker most when determination first provided in an embodiment of the present invention compensates correspondence
The schematic diagram of big luminance difference；
Fig. 4 is the two of the flow diagram of image processing method provided in an embodiment of the present invention；
Fig. 5 is that human eye can not differentiate film flicker most when determination second provided in an embodiment of the present invention compensates correspondence
The schematic diagram of big luminance difference；
Fig. 6 is the effect diagram after application image processing method provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of image processing apparatus provided in an embodiment of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, the specific implementation mode of image processing method provided in an embodiment of the present invention and device is carried out
It explains in detail.
A kind of image processing method provided in an embodiment of the present invention, as shown in Fig. 2, specifically including following steps：
S201, each frame image to be displayed is received；
Whether S202, each frame image to be displayed according to reception determine the polar signal of each frame image to be displayed with upper one
The polarity of the polar signal of frame image to be displayed is identical, and determines that each frame image to be displayed is relative to previous frame image to be displayed
No is tableaux；In the polarity of the polar signal for determining this frame image to be displayed and the polar signal of previous frame image to be displayed
It is identical, and when determining that described frame image to be displayed is tableaux, execute step S203；Determining this frame image to be displayed
When the polarity difference of polar signal and the polar signal of previous frame image to be displayed, or determining that this frame image to be displayed is dynamic
When picture, return to step S202；
S203, correspondence is compensated according to preset first, depression of order processing is carried out to the grayscale of this frame image to be displayed.
Above-mentioned image processing method provided in an embodiment of the present invention, due to sending out polar signal polarity under display tableaux
That frame image to be displayed of raw reversion, the i.e. grayscale of polar signal that frame image to be displayed identical with previous frame polarity into
The processing compensation of row depression of order, therefore, in the case where the refreshing frequency of common voltage and display that image is shown need not be changed, energy
It is enough avoid to occur when display tableaux to greatest extent overcharge phenomenon and caused by film flicker problem, and again not
Power consumption can be brought to rise and the unequal side effect of picture quality.
In the specific implementation, the step S202 in above-mentioned image processing method provided in an embodiment of the present invention is according to reception
Each frame image to be displayed, determine each frame image to be displayed polar signal whether with the polar signal of previous frame image to be displayed
Polarity is identical, and whether determining each frame image to be displayed is tableaux relative to previous frame image to be displayed, as shown in Fig. 2,
Under type such as preferably may be used to realize：
S2021, determine each frame image to be displayed polar signal whether with the polar signal of previous frame image to be displayed
Polarity is identical；It is identical as the polarity of the polar signal of previous frame image to be displayed in the polar signal for determining this frame image to be displayed
When, execute step S2022；In the polar signal for determining this frame image to be displayed and the polar signal of previous frame image to be displayed
When polarity difference, return to step S202；
S2022, each frame image to be displayed according to reception, determine this frame image to be displayed relative to previous frame figure to be shown
Seem it is no be tableaux.
Certainly, in the specific implementation, the tool of the step S202 in above-mentioned image processing method provided in an embodiment of the present invention
Body realization method can also use first determine this frame image to be displayed relative to previous frame image to be displayed for tableaux after, then
Determine the whether identical sequence of the polarity of the polar signal of this frame image to be displayed and the polar signal of previous frame image to be displayed,
It does not limit herein.
In the specific implementation, the step S203 in above-mentioned image processing method provided in an embodiment of the present invention is according to preset
First compensation correspondence carries out depression of order processing to the grayscale of this frame image to be displayed, following manner realization specifically may be used：
According to preset static grayscale the first compensation correspondence corresponding with compensation grayscale, each picture in this frame image to be displayed is determined
Grayscale value of the grayscale value of element after compensation；Wherein, the grayscale value in this frame image to be displayed after each pixel compensation is no more than each
Grayscale value of the pixel before compensation.Specifically, the first compensation pair corresponding with compensation grayscale of static grayscale can be pre-established
Related table is answered, confirms the compensation corresponding with the static grayscale that each pixel gray level value is equivalent in table by way of tabling look-up later
Grayscale, as grayscale value of each pixel after compensation.Also, due to needing to drop to the grayscale of this frame image to be displayed
Rank is handled, and therefore, the grayscale value in this frame image to be displayed after each pixel compensation can generally be less than each pixel before compensation
Grayscale value, that is, in the static grayscale established the first compensation correspondence corresponding with compensation grayscale, the corresponding benefit of static grayscale
It repays grayscale and will be generally less than the static state grayscale value.
Further, in above-mentioned image processing method provided in an embodiment of the present invention, the static grayscale and the benefit that pre-establish
Repaying the corresponding first compensation correspondence of grayscale can be determined by following manner：
First, according to the step value of setting, each first static grayscale is determined in displayable grayscale；It can generally show
The grayscale shown is 0-255, can be carried out decile, determines that step value is A, and the value range of step value can be since 1, this
Sample is as shown in table 1 below, and the multiple first static grayscale (... 0+A ... 0+nA ...) are determined according to step value A.
| Static grayscale | 0 | 0+A | …… | 0+nA | …… | 255 |
| Compensate grayscale | 0 | a | …… | e | …… | x |
Table 1
Later, the reality that debugging is determined is shown under conditions of showing tableaux for each first static grayscale
Show luminance difference be less than human eye can not differentiate film flicker maximum difference in luminance grayscale as the first static grayscale corresponding the
One compensation grayscale；The concrete numerical value of the corresponding first compensation grayscale of i.e. each first static grayscale can not be differentiated meeting human eye
Under conditions of film flicker, obtained by practical debugging.Specifically, such as photosensitive amplifier etc can be used in debugging
Brightness measurement equipment, according to different debugging enironments, as shown in figure 3, primarily determining a people for each first static grayscale
Eye can not differentiate the maximum difference in luminance L of film flicker, ensure that luminance difference is less than L in debugging, final debugging obtain this first
Static grayscale corresponding first compensates grayscale (a ... e ... x) actual displayed effect luminance difference and centainly meets less than L.In Fig. 3
In lateral coordinates indicate the time, longitudinal coordinate indicate brightness.
Finally, it when step value A is more than 1, is determined in the static grayscale of adjacent two first section using following formula
The corresponding second compensation grayscale of second static grayscale, such as can be determined by following formula each in the sections 0+A~0+2A
Second static grayscale corresponding second compensates grayscale：
Wherein, m is the second static grayscale, and M is that the second static grayscale corresponding second compensates grayscale, and A is step value, and [] is
Rounding symbol, b are that the first static grayscale 0+nA corresponding first compensates grayscale, and a is that first static state grayscale 0+ (n-1) A is corresponding
First compensation grayscale, n are the integer more than 1.
Each static state grayscale the first compensation pair corresponding with grayscale is compensated in 0~255 being calculated through the above way
It should be related to.
Further, when showing tableaux under POL signal reversing modes, the after the reversion of POL signal polarities
Two frames, i.e., P frames as shown in Figure 1, picture that can be lower than former frame display brightness, in order to which finer brightness is shown, maximum limit
The generation for avoiding flicker of degree, in above-mentioned image processing method provided in an embodiment of the present invention, preferably, this can also be promoted
The brightness of frame picture, to reduce the influence of POL signals reversion.
Based on this, further, in above-mentioned image processing method provided in an embodiment of the present invention, S202 is determining this frame
After the polar signal of image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed, as shown in figure 4, may be used also
To include the following steps：
S204, determine this frame image to be displayed next frame image to be displayed polar signal whether with this frame figure to be shown
The polarity of the polar signal of picture is on the contrary, and determine whether next frame image to be displayed relative to this frame image to be displayed is static picture
Face；In the polar signal of the polar signal and this frame image to be displayed of the next frame image to be displayed for determining this frame image to be displayed
Polarity on the contrary, and when determining that next frame image to be displayed is tableaux, executing step S205；Determining that next frame is to be shown
Image is dynamic menu, or determine next frame image to be displayed relative to this frame image to be displayed be dynamic menu when, exit stream
Journey；
S205, correspondence is compensated according to preset second, carrying out liter rank to the grayscale of next frame image to be displayed is handled.
Also, in the specific implementation, the step S204 in the above method provided in an embodiment of the present invention determines that this frame waits showing
The polar signal of the next frame image to be displayed of diagram picture whether with the polarity of the polar signal of this frame image to be displayed on the contrary, and
Determine whether next frame image to be displayed relative to this frame image to be displayed is tableaux, as shown in figure 4, can preferably adopt
It is realized with such as under type：
S2041, determine whether the polar signal of the next frame image to be displayed of this frame image to be displayed is to be shown with this frame
The polarity of the polar signal of image is opposite；In the pole for the polar signal and this frame image to be displayed for determining next frame image to be displayed
Property signal polarity it is opposite when, execute step S2042；It is to be shown in the polar signal and this frame for determining next frame image to be displayed
When the polarity of the polar signal of image is identical, flow is exited；
S2042, determine whether next frame image to be displayed relative to this frame image to be displayed is tableaux.
Certainly, in the specific implementation, the tool of the step S204 in above-mentioned image processing method provided in an embodiment of the present invention
Body realization method can also use first determine next frame image to be displayed relative to this frame image to be displayed for tableaux after, then
Determine the polar signal of the next frame image to be displayed sequence whether opposite with the polarity of the polar signal of this frame image to be displayed,
It does not limit herein.
In the specific implementation, determine whether image to be displayed is tableaux in above-mentioned steps S2042 and step S2022
Concrete mode can there are many, such as can will need to determine whether each pixel in this frame image to be displayed for tableaux
Grayscale is compared after seeking difference with the grayscale of each pixel in former frame image to be displayed with threshold limit value, if in threshold limit value range
Inside then think that this frame is tableaux；Certainly it can also determine whether each frame of image to be displayed belongs to static using other modes
Picture, therefore not to repeat here.
Further, the above-mentioned steps S2021 and step in above-mentioned image processing method provided in an embodiment of the present invention
S2041 may be performed simultaneously, and later, step S2022 and step S2042 can also be performed simultaneously；Alternatively, step can also be first carried out
Rapid S202-S203 and then execution step S204-205；The execution sequencing of each step can not be required.
In the specific implementation, the step S205 in above-mentioned image processing method provided in an embodiment of the present invention is according to preset
Second compensation correspondence carries out liter rank to the grayscale of next frame image to be displayed and handles, following manner reality specifically may be used
It is existing：
According to preset static grayscale the second compensation correspondence corresponding with compensation grayscale, determine that next frame is to be shown
Grayscale value of the grayscale value of each pixel after compensation in image；Wherein, the ash in next frame image to be displayed after each pixel compensation
Rank value is not less than grayscale value of each pixel before compensation.Specifically, it is corresponding with compensation grayscale that static grayscale can be pre-established
Second compensation correspondence table, confirmed by way of tabling look-up later be equal with each pixel gray level value in table static state ash
The corresponding compensation grayscale of rank, as grayscale value of each pixel after compensation.Also, due to needing to next frame figure to be shown
The grayscale of picture carries out a liter rank processing, and therefore, the grayscale value in next frame image to be displayed after each pixel compensation can generally be more than
Grayscale value of each pixel before compensation, that is, the static grayscale established corresponding with compensation grayscale second compensate in correspondence,
The corresponding compensation grayscale of static grayscale is generally larger than the static state grayscale value.
Further, in above-mentioned image processing method provided in an embodiment of the present invention, the static grayscale and the benefit that pre-establish
It is similar with the first compensation correspondence to repay the corresponding second compensation correspondence of grayscale, can be determined by following manner：
First, according to the step value of setting, each first static grayscale is determined in displayable grayscale；It can generally show
The grayscale shown is 0-255, can be carried out decile, determines step value as A ', the value range of step value can since 1,
It is as shown in table 2 below in this way, the multiple first static grayscale (... 0+A ' ... 0+nA ' ...) are determined according to step value A '.
Also, the step value A ' used when determining the second compensation correspondence can compensate correspondence with determining first
When the step value A that uses it is identical, can also be different, do not limit herein.
| Static grayscale | 0 | 0+A’ | …… | 0+nA’ | …… | 255 |
| Compensate grayscale | 0 | a' | …… | e' | …… | x' |
Table 2
Later, the reality that debugging is determined is shown under conditions of showing tableaux for each first static grayscale
Show luminance difference be less than human eye can not differentiate film flicker maximum difference in luminance grayscale as the first static grayscale corresponding the
One compensation grayscale；The concrete numerical value of the corresponding first compensation grayscale of i.e. each first static grayscale can not be differentiated meeting human eye
Under conditions of film flicker, obtained by practical debugging.Specifically, the brightness of such as photosensitive amplifier can be used in debugging
Measuring apparatus, according to different debugging enironments, as shown in figure 5, primarily determining a human eye not for each first static grayscale
The maximum difference in luminance L ' of distinguishable film flicker ensures that luminance difference is less than L ' in debugging, final debugging obtain this is first quiet
Corresponding first compensation grayscale (a ' ... e ' ... x ') the actual displayed effect luminance difference of state grayscale, which centainly meets, is less than L '.Scheming
Lateral coordinates in 5 indicate that time, longitudinal coordinate indicate brightness.
Finally, it when step value A ' is more than 1, is determined in the static grayscale of adjacent two first section using following formula
Second static grayscale corresponding second compensates grayscale, such as can be determined in 0+A '~sections 0+2A ' by following formula
Each second static grayscale corresponding second compensates grayscale：
Wherein, m is the second static grayscale, and M is that the second static grayscale corresponding second compensates grayscale, and A is step value, and [] is
Rounding symbol, b are that the first static grayscale 0+nA ' corresponding first compensates grayscale, and a is that first static state grayscale 0+ (n-1) A ' is corresponding
The first compensation grayscale, n is integer more than 1.
Each static state grayscale the second compensation pair corresponding with grayscale is compensated in 0~255 being calculated through the above way
It should be related to.
Specifically, N and P frames as shown in Figure 1 are being handled using above-mentioned image processing method provided in an embodiment of the present invention
Image to be displayed carries out depression of order processing to N frame images to be displayed, after carrying out liter rank processing to P frames image to be displayed, M, N and P frame
The effect diagram that image to be displayed is shown is as shown in Figure 6.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of image processing apparatus, since the device solves
The principle of problem is similar to a kind of aforementioned image processing method, therefore the implementation of the device may refer to the implementation of method, repeats
Place repeats no more.
A kind of image processing apparatus provided in an embodiment of the present invention, as shown in fig. 7, comprises：
Receiving unit 701, for receiving each frame image to be displayed；
Determination unit 702, for determine each frame image to be displayed polar signal whether with previous frame image to be displayed
The polarity of polar signal is identical, and whether determining each frame image to be displayed is tableaux relative to previous frame image to be displayed；
Processing unit 703, for determining that the polar signal of this frame image to be displayed waits showing with previous frame in determination unit 702
The polarity of the polar signal of diagram picture is identical, and when determining that this frame image to be displayed is tableaux, is mended according to preset first
Correspondence is repaid, depression of order processing is carried out to the grayscale of this frame image to be displayed.
Further, the determination unit 702 in above-mentioned image processing apparatus provided in an embodiment of the present invention, as shown in fig. 7,
It specifically includes：First polarity determination unit 7021, for determining whether the polar signal of each frame image to be displayed waits for previous frame
Show that the polarity of the polar signal of image is identical；
First tableaux determination unit 7022, for determining this frame image to be displayed in the first polarity determination unit 7021
Polar signal it is identical as the polarity of the polar signal of previous frame image to be displayed when, according to each frame image to be displayed of reception,
Determine whether this frame image to be displayed relative to previous frame image to be displayed is tableaux.
Further, the processing unit 703 in above-mentioned image processing apparatus provided in an embodiment of the present invention, specifically for pressing
According to preset static grayscale the first compensation correspondence corresponding with compensation grayscale, each pixel in this frame image to be displayed is determined
Grayscale value of the grayscale value after compensation；Wherein, the grayscale value in this frame image to be displayed after each pixel compensation is not more than each picture
Grayscale value of the element before compensation.
Further, the determination unit 702 in above-mentioned image processing apparatus provided in an embodiment of the present invention, is additionally operable to determine
The polarity of the polar signal and the polar signal of this frame image to be displayed of the next frame image to be displayed of this frame image to be displayed is
It is no on the contrary, and determining whether next frame image to be displayed relative to this frame image to be displayed is tableaux；
Processing unit 703 is additionally operable to determine the next frame image to be displayed of this frame image to be displayed in determination unit 702
The polarity of the polar signal of polar signal and described frame image to be displayed is on the contrary, and determine that next frame image to be displayed is static state
When picture, correspondence is compensated according to preset second, carrying out liter rank to the grayscale of next frame image to be displayed is handled.
Further, the determination unit 702 in above-mentioned image processing apparatus provided in an embodiment of the present invention, as shown in fig. 7,
It specifically includes：Second polarity determination unit 7023, the polarity of the next frame image to be displayed for determining this frame image to be displayed
Whether signal is opposite with the polarity of the polar signal of this frame image to be displayed；
Second tableaux determination unit 7024, for determining this frame image to be displayed in the second polarity determination unit 7023
Next frame image to be displayed polar signal it is opposite with the polarity of the polar signal of this frame image to be displayed when, determine next frame
Whether image to be displayed is tableaux relative to this frame image to be displayed.
Further, the processing unit 703 in above-mentioned image processing apparatus provided in an embodiment of the present invention, specifically for pressing
According to preset static grayscale the second compensation correspondence corresponding with compensation grayscale, each picture in next frame image to be displayed is determined
Grayscale value of the grayscale value of element after compensation；Wherein, the grayscale value in next frame image to be displayed after each pixel compensation is not less than
Grayscale value of each pixel before compensation.
Further, preset quiet in the processing unit 703 in above-mentioned image processing apparatus provided in an embodiment of the present invention
State grayscale the first compensation correspondence corresponding with compensation grayscale or the second compensation correspondence are determined by following manner：It presses
According to the step value of setting, each first static grayscale is determined in displayable grayscale；For each first static grayscale,
Under conditions of showing tableaux, the actual displayed luminance difference that debugging is determined, which is less than human eye, can not differentiate film flicker
Maximum difference in luminance grayscale as the corresponding first compensation grayscale of the described first static grayscale；When step value is more than 1, use
Following formula determine that the second static grayscale corresponding second in the described first static grayscale of adjacent two section compensates grayscale：
Wherein, m is the second static grayscale, and M is that the second static grayscale corresponding second compensates grayscale, and A is step value, and [] is
Rounding symbol, b are that the first static grayscale 0+nA corresponding first compensates grayscale, and a is that first static state grayscale 0+ (n-1) A is corresponding
First compensation grayscale, n are the integer more than 1.
Through the above description of the embodiments, those skilled in the art can be understood that the embodiment of the present invention
The mode of necessary general hardware platform can also be added to realize by software by hardware realization.Based on such reason
Solution, the technical solution of the embodiment of the present invention can be expressed in the form of software products, which can be stored in one
In a non-volatile memory medium (can be CD-ROM, USB flash disk, mobile hard disk etc.), including some instructions are used so that a meter
Calculate the side described in each embodiment of machine equipment (can be personal computer, server or the network equipment etc.) the execution present invention
Method.
It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, the module in attached drawing or stream
Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can describe be divided according to embodiment
It is distributed in the device of embodiment, respective change can also be carried out and be located in one or more devices different from the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
Above-mentioned image processing method and device provided in an embodiment of the present invention, including：Receive each frame image to be displayed；According to
Receive each frame image to be displayed, determine each frame image to be displayed polar signal whether the polarity with previous frame image to be displayed
The polarity of signal is identical, and whether determining each frame image to be displayed is tableaux relative to previous frame image to be displayed；True
The polar signal of fixed this frame image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed, and determines that this frame waits for
When showing that image is tableaux, correspondence is compensated according to preset first, the grayscale of this frame image to be displayed is dropped
Rank is handled.Due to that frame image to be displayed, i.e. polar signal inverted to polar signal polarity under display tableaux
The grayscale of that frame image to be displayed identical with previous frame polarity carries out depression of order processing compensation, therefore, need not more change plan
Common voltage as shown in and in the case of the refreshing frequency of display, may when can avoid display tableaux to greatest extent
Occur overcharge phenomenon and caused by film flicker problem, and power consumption will not be brought to rise again and picture quality is unequal secondary makees
With.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (12)
1. a kind of image processing method, which is characterized in that including：
Receive each frame image to be displayed；
According to each frame image to be displayed of reception, determine each frame image to be displayed polar signal whether with previous frame figure to be shown
The polarity of the polar signal of picture is identical, and whether determining each frame image to be displayed is static picture relative to previous frame image to be displayed
Face；
It is identical as the polarity of the polar signal of previous frame image to be displayed in the polar signal for determining this frame image to be displayed, and really
When fixed described frame image to be displayed is tableaux, correspondence is compensated according to preset first, it is to be shown to described frame
The grayscale of image carries out depression of order processing；
After the polar signal for determining this frame image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed,
Further include：
Determine the next frame image to be displayed of described frame image to be displayed polar signal whether with described frame figure to be shown
The polarity of the polar signal of picture on the contrary, and determine the next frame image to be displayed relative to described frame image to be displayed whether
For tableaux；
In the polar signal for determining the next frame image to be displayed of described frame image to be displayed and described frame image to be displayed
Polar signal polarity on the contrary, and when determining that the next frame image to be displayed is tableaux, being mended according to preset second
Correspondence is repaid, carrying out liter rank to the grayscale of the next frame image to be displayed is handled.
2. the method as described in claim 1, which is characterized in that each frame image to be displayed according to reception determines each frame
Whether the polar signal of image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed, and determines that each frame waits showing
Whether diagram picture is tableaux relative to previous frame image to be displayed, is specifically included：
Determine whether the polar signal of each frame image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed；
When the polar signal for determining this frame image to be displayed is identical as the polarity of the polar signal of previous frame image to be displayed, root
According to each frame image to be displayed of reception, determine whether described frame image to be displayed relative to previous frame image to be displayed is static
Picture.
3. the method as described in claim 1, which is characterized in that it is described to compensate correspondence according to preset first, to described
The grayscale of this frame image to be displayed carries out depression of order processing, specifically includes：
According to preset static grayscale the first compensation correspondence corresponding with compensation grayscale, described frame figure to be shown is determined
Grayscale value of the grayscale value of each pixel after compensation as in；Wherein, the ash in described frame image to be displayed after each pixel compensation
Rank value is not more than grayscale value of each pixel before compensation.
4. the method as described in claim 1, which is characterized in that the next frame of the described frame image to be displayed of determination waits showing
The polar signal of diagram picture whether with the polarity of the polar signal of described frame image to be displayed on the contrary, and determining the next frame
Whether image to be displayed is tableaux relative to described frame image to be displayed；It specifically includes：
Determine the next frame image to be displayed of described frame image to be displayed polar signal whether with described frame figure to be shown
The polarity of the polar signal of picture is opposite；
In the polar signal for determining the next frame image to be displayed of described frame image to be displayed and described frame image to be displayed
Polar signal polarity it is opposite when, determine the next frame image to be displayed relative to described frame image to be displayed whether be
Tableaux.
5. the method as described in claim 1, which is characterized in that it is described to compensate correspondence according to preset second, to described
The grayscale of next frame image to be displayed carries out a liter rank processing, specifically includes：
According to preset static grayscale the second compensation correspondence corresponding with compensation grayscale, determine that the next frame is to be shown
Grayscale value of the grayscale value of each pixel after compensation in image；Wherein, in the next frame image to be displayed after each pixel compensation
Grayscale value be not less than grayscale value of each pixel before compensation.
6. the method as described in claim 3 or 5, which is characterized in that static grayscale and compensation grayscale corresponding described first
Compensation correspondence or the second compensation correspondence are determined by following manner：
According to the step value of setting, each first static grayscale is determined in displayable grayscale；
For each described first static grayscale, under conditions of showing tableaux, the actual displayed that debugging is determined is bright
Degree difference be less than human eye can not differentiate film flicker maximum difference in luminance grayscale as the described first static grayscale corresponding the
One compensation grayscale；
When step value is more than 1, determine that second in the described first static grayscale of adjacent two section is quiet using following formula
The corresponding second compensation grayscale of state grayscale：
Wherein, m is the second static grayscale, and M is that the second static grayscale corresponding second compensates grayscale, and A is step value, and [] is rounding
Symbol, b are that the first static grayscale 0+nA corresponding first compensates grayscale, and a is first static state grayscale 0+ (n-1) A corresponding first
Grayscale is compensated, n is the integer more than 1.
7. a kind of image processing apparatus, which is characterized in that including：
Receiving unit, for receiving each frame image to be displayed；
Determination unit, for according to each frame image to be displayed of reception, determine each frame image to be displayed polar signal whether with
The polarity of the polar signal of previous frame image to be displayed is identical, and determines each frame image to be displayed relative to previous frame figure to be shown
Seem it is no be tableaux；The polar signal and described frame for determining the next frame image to be displayed of this frame image to be displayed wait showing
Whether the polarity of the polar signal of diagram picture is on the contrary, and determine that the next frame image to be displayed is to be shown relative to described frame
Whether image is tableaux；
Processing unit, the polar signal for determining this frame image to be displayed in the determination unit and previous frame image to be displayed
Polar signal polarity it is identical, and when determining that described frame image to be displayed is tableaux, compensated according to preset first
Correspondence carries out depression of order processing to the grayscale of described frame image to be displayed；Determine that described frame waits in the determination unit
Show the polarity of the polar signal of polar signal and the described frame image to be displayed of the next frame image to be displayed of image on the contrary,
And when determining that the next frame image to be displayed is tableaux, correspondence is compensated according to preset second, to described next
The grayscale of frame image to be displayed carries out a liter rank processing.
8. device as claimed in claim 7, which is characterized in that the determination unit specifically includes：First polarity determines single
Member, for determine each frame image to be displayed polar signal whether the polarity phase with the polar signal of previous frame image to be displayed
Together；
First tableaux determination unit, for determining that the polarity of this frame image to be displayed is believed in the first polarity determination unit
When number identical as the polarity of the polar signal of previous frame image to be displayed, according to each frame image to be displayed of reception, determine described in
Whether this frame image to be displayed is tableaux relative to previous frame image to be displayed.
9. device as claimed in claim 7, which is characterized in that the processing unit is specifically used for according to preset static ash
Rank the first compensation correspondence corresponding with compensation grayscale, determines that the grayscale value of each pixel in described frame image to be displayed exists
Grayscale value after compensation；Wherein, the grayscale value in described frame image to be displayed after each pixel compensation is being mended no more than each pixel
Grayscale value before repaying.
10. device as claimed in claim 7, which is characterized in that the determination unit specifically includes：Second polarity determines single
Whether member, the polar signal for determining the next frame image to be displayed of described frame image to be displayed are to be shown with described frame
The polarity of the polar signal of image is opposite；
Second tableaux determination unit, under determining described frame image to be displayed in the second polarity determination unit
When the polar signal of one frame image to be displayed is opposite with the polarity of the polar signal of described frame image to be displayed, determine it is described under
Whether one frame image to be displayed is tableaux relative to described frame image to be displayed.
11. device as claimed in claim 7, which is characterized in that the processing unit is specifically used for according to preset static ash
Rank the second compensation correspondence corresponding with compensation grayscale, determines the grayscale value of each pixel in the next frame image to be displayed
Grayscale value after compensation；Wherein, the grayscale value in the next frame image to be displayed after each pixel compensation is not less than each pixel
Grayscale value before compensation.
12. the device as described in claim 9 or 11, which is characterized in that preset static state grayscale and benefit in the processing unit
It repays the corresponding first compensation correspondence of grayscale or the second compensation correspondence is determined by following manner：According to
The step value of setting determines each first static grayscale in displayable grayscale；For each first static grayscale,
Under conditions of showing tableaux, the actual displayed luminance difference that debugging is determined, which is less than human eye, can not differentiate film flicker
The grayscale of maximum difference in luminance compensates grayscale as the described first static grayscale corresponding first；When step value is more than 1, under
It states formula and determines that the second static grayscale corresponding second in the described first static grayscale of adjacent two section compensates grayscale：
Wherein, m is the second static grayscale, and M is that the second static grayscale corresponding second compensates grayscale, and A is step value, and [] is rounding
Symbol, b are that the first static grayscale 0+nA corresponding first compensates grayscale, and a is first static state grayscale 0+ (n-1) A corresponding first
Grayscale is compensated, n is the integer more than 1.
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| CN107039013B (en) * | 2017-05-25 | 2020-03-10 | 上海中航光电子有限公司 | Display driving circuit board, driving method thereof and display device |
| CN107665665A (en) * | 2017-10-27 | 2018-02-06 | 康佳集团股份有限公司 | A kind of guard method of OLED display screen, intelligent television and storage medium |
| CN109584831B (en) | 2019-01-08 | 2020-10-16 | 合肥京东方显示技术有限公司 | Display compensation method and device and display device |
| CN110648643B (en) * | 2019-09-30 | 2021-05-11 | 京东方科技集团股份有限公司 | Voltage adjusting method and device and display device |
| CN112542124B (en) * | 2020-12-04 | 2022-08-05 | Tcl华星光电技术有限公司 | Brightness compensation method, brightness compensation device and display device |
| CN113380209B (en) * | 2021-06-08 | 2022-05-31 | 惠州华星光电显示有限公司 | Display device and display method thereof |
| CN114140542B (en) * | 2021-12-09 | 2022-11-22 | 成都智元汇信息技术股份有限公司 | Picture cutting method based on color compensation, electronic equipment and medium |
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