CN116994513B - Image processing method, display device and computer readable storage medium - Google Patents

Image processing method, display device and computer readable storage medium Download PDF

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CN116994513B
CN116994513B CN202311104863.9A CN202311104863A CN116994513B CN 116994513 B CN116994513 B CN 116994513B CN 202311104863 A CN202311104863 A CN 202311104863A CN 116994513 B CN116994513 B CN 116994513B
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target image
polarity
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CN116994513A (en
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周满城
袁海江
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HKC Co Ltd
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HKC Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30242—Counting objects in image

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  • Theoretical Computer Science (AREA)
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  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention discloses an image processing method, a display device and a computer readable storage medium, which relate to the technical field of image display, and select target image data conforming to preset processing conditions by performing image detection on display image data, when the target image data meets preset sub-pixel counting conditions, execute a polarity adjustment process on a data line of the display device, realize high-precision detection on the target image data by taking single line data as a detection unit, improve the detection effect of an image, and adjust the voltage polarity of the target image data to ensure that the positive and negative polarities of the adjusted voltage polarity can be offset and balance the voltage of a common electrode, thereby avoiding the phenomenon of display crosstalk caused by voltage unbalance of the voltage of the common electrode due to the positive polarity bias or the negative polarity bias, and improving the processing effect of the image.

Description

Image processing method, display device and computer readable storage medium
Technical Field
The present invention relates to the field of image display technologies, and in particular, to an image processing method, a display device, and a computer readable storage medium.
Background
When the whole display screen displays in one row or multiple rows, the influence of all data lines with positive and negative polarities on the common electrode (VCOM) in one row is overlapped, so that the common electrode (VCOM) is extremely easy to be interfered by the data lines, as shown in fig. 1, the common electrode (VCOM) has voltage up-jitter and voltage down-jitter, and the jitter can cause crosstalk abnormal display phenomenon of a display picture.
Disclosure of Invention
The main objective of the present invention is to provide an image processing method, a display device and a computer readable storage medium, which are aimed at solving the technical problem that the display still has abnormal display due to the detection defect existing in the existing picture detection mechanism.
To achieve the above object, the present invention provides an image processing method including the steps of:
performing image detection on the display image data, and selecting target image data meeting preset processing conditions;
and when the target image data meets the preset sub-pixel count condition, executing a polarity adjustment process for a data line of the display device.
Optionally, the step of performing image detection on the display image data and selecting target image data meeting preset processing conditions includes:
Comparing whether the polarity format of the display image data is the same as the polarity format of the preset image data;
if the display image data are the same, judging that the display image data meet the preset processing conditions, and taking the display image data as the target image data.
Optionally, before the step of performing the polarity adjustment process on the data line of the display device when the target image data satisfies a preset subpixel counting condition, the image processing method further includes:
and carrying out line splitting on the target image data to obtain a plurality of target image line data.
Optionally, the step of performing a polarity adjustment process on a data line of a display device when the target image data satisfies a preset subpixel counting condition includes:
respectively counting the sub-pixels in each target image line data, and judging whether the number of the sub-pixels counted by each target image line data is equal to or greater than the preset number of the sub-pixels;
and if the number of the sub-pixels is equal to or greater than the preset number of the lines of the target image line data of the preset number of the sub-pixels, which is obtained by judgment, is equal to or greater than the preset number of the lines, judging that the target image data meets the preset sub-pixel counting condition, and executing a polarity adjustment process of the data lines of the display device.
Optionally, in the case that the voltage polarity of the target image line data is in the first inversion mode, the step of counting the sub-pixels in each of the target image line data includes:
counting the sub-pixels which are positioned in odd columns and have gray scale brightness equal to or greater than preset gray scale brightness in the target image row data to obtain the number of odd columns, and counting the sub-pixels which are positioned in even columns and have gray scale brightness equal to or greater than preset gray scale brightness in the target image row data to obtain the number of even columns;
and calculating the absolute value of the sum of the number of the odd columns and the number of the even columns, and taking the absolute value as the number of the sub-pixels.
Optionally, in the case that the voltage polarity of the target image line data is in the second inversion mode, the step of counting the sub-pixels in each of the target image line data includes:
counting the sub-pixels which are positioned in the first sequence and have gray scale brightness equal to or greater than preset gray scale brightness in the target image line data to obtain the number of the first sequence, and counting the sub-pixels which are positioned in the second sequence and have gray scale brightness equal to or greater than preset gray scale brightness in the target image line data to obtain the number of the second sequence;
And calculating the absolute value of the sum of the first sequence number and the second sequence number, and taking the absolute value as the number of the sub-pixels.
Optionally, the step of performing a polarity adjustment process for a data line of the display device includes:
outputting a first control signal, a second control signal and a third control signal;
the potential of any one of the first control signal, the second control signal and the third control signal is changed to adjust the polarity of the voltage output by the data line.
Optionally, after the step of adjusting the polarity of the voltage output by the data line, the image processing method further includes:
acquiring display parameters of target image data after a polarity adjustment process;
if the display parameter is determined to be within a preset display specification, stopping converting the potentials of the first control signal, the second control signal and the third control signal;
if the display parameter is not within the preset display specification, continuing to change the potentials of the first control signal, the second control signal and the third control signal.
In order to achieve the above object, the present invention provides a display device including a memory, a processor, and an image processing program stored in the memory and executable on the processor, the image processing program implementing the steps of the image processing method as described above when executed by the processor.
In addition, in order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon an image processing program which, when executed by a processor, implements the steps of the image processing method as described above.
The invention provides an image processing method, a display device and a computer readable storage medium, wherein whether the voltage polarity type of display image data is a special voltage polarity type is determined by performing image detection on the display image data, if yes, the display image data is the display image data conforming to the preset processing condition, the display image data is determined to be target image data, when the number of data lines with asymmetric polarities in the target image data is judged to meet the preset sub-pixel counting condition, the data line accessed by the target image data is determined to influence a common electrode, so that the polarity adjustment process of the data line of the display device is performed, the high-precision detection of the target image data is realized by taking the line data as a detection unit, the detection effect of an image is improved, and the adjusted voltage polarity can be subjected to positive and negative polarity offset by adjusting the voltage polarity of the target image data, so that the voltage of the common electrode is prevented from being influenced by the voltage with the positive polarity bias or the negative polarity bias, and the display crosstalk phenomenon caused by the voltage is avoided, and the processing effect of the image is improved.
Drawings
Fig. 1 is a schematic diagram of voltage jitter occurring after a common voltage VCOM is interfered by a data line;
FIG. 2 is a schematic diagram of a voltage polarity type being a dot inversion voltage polarity type;
FIG. 3 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 4 is a flowchart of a first embodiment of an image processing method according to the present invention;
FIG. 5 is a schematic diagram showing a receiving stage of image data according to the present invention;
FIG. 6 is a schematic diagram of a voltage polarity type being a dot inversion voltage polarity type;
FIG. 7 is a schematic diagram of a voltage polarity type 1+2line inversion voltage polarity type;
FIG. 8 is a flowchart of a second embodiment of an image processing method according to the present invention;
FIG. 9 is a flowchart of a third embodiment of an image processing method according to the present invention;
FIG. 10 is a schematic diagram of COF distribution;
FIG. 11 is a schematic diagram showing the polarity relationship between the electric potential of DOT_C signal, POL signal, POLC signal and the data line;
fig. 12 is a schematic diagram of voltage polarity types of display parameters of target image data within a preset display specification.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In order to solve the problems mentioned in the background art, a picture detection mechanism is proposed in the prior art, and the principle is that after a certain display mode is detected, the voltage polarity is converted into another one, so as to realize positive and negative polarity cancellation.
However, in practical applications, it is found that the defect exists in the mechanism, that is, the first detecting unit needs to detect the frame of the detected frame, that is, the detecting unit needs to detect the frame of the detected frame in multiple rows, that is, the detecting unit is invalid in the special voltage polarity type, referring to fig. 2, the white portion is the effect of the "H" character string 1101 on the display screen, according to the voltage polarity 1102 outputted by the data line at this time, the sub-pixel is displayed as the dot inversion, the first sub-pixel is a "+" bit example, the second row (8+10-). 2 is known, wherein "2" is the number of "H" character strings, the voltage polarity of the "H" character string on the row is 8 positive pixels and 10 negative pixels, and the phenomenon that the polarity of the "H" character string on the row is asymmetric is not able to cancel the positive and negative polarity is unable to be performed, so that as the effect of the line data on the VCOM increases, the effect of the line data on the VCOM is biased downward, and crosstalk is reflected on the display. R represents a red subpixel, G represents a green subpixel, and B represents a blue subpixel.
As shown in fig. 3, fig. 3 is a schematic diagram of a terminal structure of a hardware running environment according to an embodiment of the present invention.
The terminal of the present invention is a display device, as shown in fig. 3, where the display device may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Optionally, the display device may also include an RF (Radio Frequency) circuit, a sensor, a WiFi module, and the like. Among them, sensors such as light sensor, motion sensor and others are not described herein.
It will be appreciated by those skilled in the art that the display device structure shown in fig. 3 is not limiting of the display device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 3, an operating system, a network communication module, a user interface module, and an image processing program may be included in the memory 1005, which is one type of computer storage medium.
In the display device shown in fig. 3, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call an image processing program stored in the memory 1005 and perform the following operations:
performing image detection on the display image data, and selecting target image data meeting preset processing conditions;
and when the target image data meets the preset sub-pixel count condition, executing a polarity adjustment process for a data line of the display device.
Further, the processor 1001 may call an image processing program stored in the memory 1005, and also perform the following operations:
The step of performing image detection on the display image data and selecting target image data meeting preset processing conditions comprises the following steps: comparing whether the polarity format of the display image data is the same as the polarity format of the preset image data;
if the display image data are the same, judging that the display image data meet the preset processing conditions, and taking the display image data as the target image data.
Further, the processor 1001 may call an image processing program stored in the memory 1005, and also perform the following operations:
and when the target image data meets the preset sub-pixel counting condition, before the step of executing the polarity adjustment process of the data line of the display device, carrying out row splitting on the target image data to obtain a plurality of target image row data.
Further, the processor 1001 may call an image processing program stored in the memory 1005, and also perform the following operations:
the step of executing a polarity adjustment process for a data line of a display device when the target image data satisfies a preset subpixel counting condition includes: respectively counting the sub-pixels in each target image line data, and judging whether the number of the sub-pixels counted by each target image line data is equal to or greater than the preset number of the sub-pixels;
And if the number of the sub-pixels is equal to or greater than the preset number of the lines of the target image line data of the preset number of the sub-pixels, which is obtained by judgment, is equal to or greater than the preset number of the lines, judging that the target image data meets the preset sub-pixel counting condition, and executing a polarity adjustment process of the data lines of the display device.
Further, the processor 1001 may call an image processing program stored in the memory 1005, and also perform the following operations:
the step of counting the sub-pixels in each of the target image line data, respectively, includes: counting the sub-pixels which are positioned in odd columns and have gray scale brightness equal to or greater than preset gray scale brightness in the target image row data to obtain the number of odd columns, and counting the sub-pixels which are positioned in even columns and have gray scale brightness equal to or greater than preset gray scale brightness in the target image row data to obtain the number of even columns;
and calculating the absolute value of the sum of the number of the odd columns and the number of the even columns, and taking the absolute value as the number of the sub-pixels.
Further, the processor 1001 may call an image processing program stored in the memory 1005, and also perform the following operations:
In the case that the voltage polarity of the target image line data is in the second inversion mode, the step of counting the sub-pixels in each of the target image line data includes: counting the sub-pixels which are positioned in the first sequence and have gray scale brightness equal to or greater than preset gray scale brightness in the target image line data to obtain the number of the first sequence, and counting the sub-pixels which are positioned in the second sequence and have gray scale brightness equal to or greater than preset gray scale brightness in the target image line data to obtain the number of the second sequence;
and calculating the absolute value of the sum of the first sequence number and the second sequence number, and taking the absolute value as the number of the sub-pixels.
Further, the processor 1001 may call an image processing program stored in the memory 1005, and also perform the following operations:
the step of performing a polarity adjustment process for a data line of a display device includes: outputting a first control signal, a second control signal and a third control signal;
the potential of any one of the first control signal, the second control signal and the third control signal is changed to adjust the polarity of the voltage output by the data line.
Further, the processor 1001 may call an image processing program stored in the memory 1005, and also perform the following operations:
after the step of adjusting the polarity of the voltage output by the data line, acquiring display parameters of target image data after a polarity adjustment process;
if the display parameter is determined to be within a preset display specification, stopping converting the potentials of the first control signal, the second control signal and the third control signal;
if the display parameter is not within the preset display specification, continuing to change the potentials of the first control signal, the second control signal and the third control signal.
Referring to fig. 4, in a first embodiment of the present invention, the image processing method includes:
step S10, image detection is carried out on the display image data, and target image data meeting preset processing conditions are selected.
Before image detection is performed on the display image data, the display image data is received, referring to fig. 5, and in the stage of receiving the display image data, the controller (i.e., TCON in fig. 5) receives the display image data from the front end chip, where the front end chip includes, but is not limited to, a motherboard chip, a SoC chip, and the like. The display image data is a digital signal for forming a picture. The controller is a main control chip of the display panel and is used for converting received display image data into synchronous line control signals, data output signals and the like, so that image display of the display image data on the display panel is realized. Wherein the display image data includes an image display phenomenon of a multi-frame picture, and in one frame picture, the display image data includes at least a gray scale of each sub-pixel, and the like.
In the image detection stage, the controller automatically performs image detection on the received display image data, wherein the image detection on the display image data refers to detecting the voltage polarity type of a frame of picture, and judging whether the voltage polarity type is a special voltage polarity type, for example, a dot inversion voltage polarity type, a 1+2line inversion voltage polarity type, and the like.
It should be noted that, the preset processing condition in this embodiment is the display image data of which the voltage polarity type is the special voltage polarity type.
After determining that the display image data meets the preset processing condition, it is indicated that the display image data cannot be detected by the existing picture detection mechanism, so that the display image data is determined to be the target image data of the image detection mechanism proposed in the embodiment at this time, so as to realize effective detection of the display image data with the special voltage polarity type.
Optionally, in step S10, image detection is performed on the display image data, and a step of selecting target image data that meets a preset processing condition includes:
step S101, comparing whether the polarity format of the display image data is the same as the polarity format of the preset image data.
Step S102, if the display image data are the same, judging that the display image data meet the preset processing conditions, and taking the display image data as the target image data.
The controller stores a plurality of polarity formats of preset image data, for example, a dot inversion polarity format for displaying the "H" character string image data shown in fig. 6 and a 1+2line inversion polarity format for displaying the "H" character string image data shown in fig. 7, which have a certain logic rule.
Referring to fig. 6, the polarity rules 1103 inputted to the corresponding sub-pixels via the data lines are sequentially and circularly accessed in "- +" and referring to fig. 7, the polarity rules 1104 inputted to the corresponding sub-pixels via the data lines are sequentially and circularly accessed in "+ - +" so that the preset processing condition in this embodiment is whether the polarity format of the display image data has the same polarity format as the preset image data, and if yes, the polarity format of the display image data is determined to be the special voltage polarity format, and is determined to be the target image data.
It is understood that the polarity format of the preset image data is not limited to the polarity format in fig. 6 and 7, and the polarity format having a certain logic rule such as "++ -" regular sequential cyclic access or "++ -" regular sequential cyclic access is the polarity format of the preset image data, so as to distinguish the display image data processed by the existing picture detection mechanism from the target image data processed by the image detection mechanism shown in the embodiment, thereby realizing targeted image processing.
Step S20, when the target image data satisfies a preset sub-pixel count condition, performing a polarity adjustment process for a data line of the display device.
The preset subpixel count condition is that there is a preset number of rows that causes the voltage of the common electrode to shake.
Because the polarity corresponding to the sub-pixel on each row of data in the display image data is related to the voltage polarity input by the connected data line, and the input voltage polarity is related to the row, the display image data belonging to the special voltage polarity type needs to be detected in a detection mode with the single row of data as a detection unit, so that the display image data belonging to the special voltage polarity type can be effectively detected, and the influence on the common electrode is caused by superposition of the multiple rows of data, and the influence of the single row of data on the common electrode cannot be perceived by human eyes, so that the image detection mechanism of the embodiment is as follows: the single-line target image line data is used as a detection unit to detect whether the line number of the target image line data with excessive deviation is equal to or exceeds the preset line number which can cause the voltage of the common electrode to shake, so as to determine whether the polarity of the data line needs to be adjusted.
Therefore, when the target image data is detected to meet the preset sub-pixel count condition, the number of lines of the target image line data with excessive deviation in the target image data is equal to or exceeds the preset number of lines, and the crosstalk phenomenon exists in the image display according to the voltage polarity input by the data line at the moment, so that the voltage polarity of the data line needs to be adjusted at the moment, namely, the execution stage of the image detection function is entered, the controller outputs a control signal according to the setting, so that the polarity of the voltage output on the data line of the display device is adjusted, wherein the data line is coupled with the common electrode, and the voltage of the common electrode is dithered.
Because the common electrode is extremely easy to be interfered by the coupling of the data lines, when the display screen displays, the common electrode is overlapped by all the data lines with positive and negative polarities, and if the whole common electrode is shown as a plus, the voltage of the common electrode is dithered upwards; if the whole display appears as-, the voltage of the common electrode shakes downwards, so that the display picture is abnormal such as crosstalk (cross talk) and color shift. The crosstalk refers to that a picture with other colors is arranged on a pure-color background picture, so that the brightness of the adjacent area changes, and the picture is distorted.
In order to improve the above problem, the voltage polarity of the data lines of the image line data of some pictures which are easy to generate crosstalk and color cast is adjusted, so that the TCON outputs control signals according to the setting, wherein the control signals include but are not limited to dot_c signals, POLC signals and POL signals, so as to change the polarity of the data lines, and further improve the anomalies such as crosstalk and color cast.
When the target image data is detected not to meet the preset subpixel counting condition, the line number of the target image line data with excessive deviation in the target image data at the moment is smaller than the preset line number, and the mutual superposition of the target image line data does not enable the common electrode to generate voltage jitter, so that the voltage polarity of the data line is not regulated for saving regulation resources, and the control controller outputs a control signal according to the initial polarity signal.
Optionally, before the step of performing the polarity adjustment process on the data line of the display device when the target image data satisfies a preset subpixel counting condition in step S20, the image processing method further includes:
step S201, performing line splitting on the target image data to obtain a plurality of target image line data.
Because the image detection mechanism of the embodiment uses single line data as the detection unit, after the target image data is determined, the line of the target image data is split based on the line splitting basis to obtain the target image line data of one line, so that the target image data is subjected to image processing in the line detection unit, so that the image detection mechanism provided by the embodiment can be thinned to each sub-pixel in the display image data, and the image processing effect is improved.
In this embodiment, whether the voltage polarity type of the display image data is a special voltage polarity type is determined by performing image detection on the display image data, if yes, the display image data is the display image data conforming to the preset processing condition of the present invention, the display image data is determined to be target image data, when it is determined that the number of data lines with excessive deviation in the target image data meets the preset sub-pixel counting condition, the data line to which the target image data is connected is determined to affect the common electrode, so that the polarity adjustment process of the data line of the display device is performed, the high-precision detection of the target image data is realized by taking the line data as a detection unit, the detection effect of the image is improved, the positive and negative polarities of the adjusted voltage polarity can be offset by adjusting the voltage polarity of the target image data, the voltage of the common electrode is balanced, the phenomenon of display crosstalk caused by voltage jitter of the common electrode is avoided, and the processing effect of the image is improved.
Further, based on the above-described first embodiment of the image processing method of the present invention, a second embodiment of the image processing method of the present invention is proposed.
Referring to fig. 8, in a second embodiment of the image processing method of the present invention, the step S20 described above, when the target image line data satisfies a preset subpixel counting condition, performs a polarity adjustment process for a data line of a display device, including:
and step A10, respectively counting the sub-pixels in the target image line data, and judging whether the number of the sub-pixels counted by the target image line data is equal to or greater than the preset number of the sub-pixels.
The preset number of sub-pixels is the number of positive and negative polarity sub-pixel differences that causes excessive deviation in polarity in the single-line target image line data.
In this embodiment, the number of positive and negative polarity sub-pixels in each target image line data is counted, and whether the number of sub-pixels obtained by counting each target image line data is equal to or greater than the preset number of sub-pixels is determined, so as to determine whether an excessive deviation exists in a certain line of target image line data.
Optionally, the step of counting the sub-pixels in each of the target image line data in step a10 includes:
and step A101, counting the sub-pixels which are positioned in odd columns and have gray scale brightness equal to or larger than preset gray scale brightness in the target image row data to obtain the number of odd columns, and counting the sub-pixels which are positioned in even columns and have gray scale brightness equal to or larger than preset gray scale brightness in the target image row data to obtain the number of even columns.
And step A102, calculating the absolute value of the sum of the odd column number and the even column number, and taking the absolute value as the number of the sub-pixels.
According to the present embodiment, the polarity types meeting the preset processing conditions are classified into two major types according to the major types of the special voltage polarity types, the first type is the dot inversion polarity format (i.e., the first inversion manner) shown in fig. 6, and in the inversion manner, the polarity distribution of the sub-pixels is that the two sub-pixels are in a cycle, i.e., the cycle is performed with the polarity distribution of "- +", so that the sub-pixels in the odd columns in the target image row data to be counted are obtained in the polarity distribution, the gray-scale brightness of the sub-pixels in the odd columns is counted, the sub-pixel count 1 equal to or greater than the preset gray-scale brightness is counted, the sub-pixel count 0 less than the preset gray-scale brightness is counted, and the gray-scale brightness of the sub-pixels in the even columns in the target image row data is counted, and the sub-pixel count 0 less than the preset gray-scale brightness is counted, thereby sequentially judging the sub-pixels in each row of the target image row data.
Specifically, taking fig. 6 as an example, assuming that the number of sub-pixel differences causing excessive deviation of the single-line target image line data is 5, and assuming that the preset number of lines causing dithering of the voltage of the common electrode is 2, in the sequential detection process of the first to tenth line target image line data shown in fig. 6, respectively, the sub-pixel counts at the odd-numbered columns and equal to or greater than the preset gray-scale luminance, the sub-pixel counts at the even-numbered columns and equal to or greater than the preset gray-scale luminance, the sub-pixel counts at the less than the preset gray-scale luminance, are 8, the sub-pixel counts at the less than the preset gray-scale luminance are-2, that is, the number of odd columns of the second line target image line data to the ninth line target image line data is 8, the number of even columns is-2, the absolute value of the sum of the number of odd columns and the number of even columns is calculated, the number of sub-pixels of the 8 line target image line data is 6, which indicates that the second line target image line data to the ninth line target image line data have excessive deviation, and the number of lines with excessive deviation obviously exceeds the preset number of lines, it is confirmed that the superposition of the second line target image line data to the ninth line target image line data in the target image data can cause the voltage of the common electrode to shake, and the polarity of the voltage input by the data line on the target image data is required to be adjusted at the moment.
Optionally, the step of counting the sub-pixels in each of the target image line data in step a10 includes:
step A103, counting the sub-pixels which are positioned in the first sequence and have gray scale brightness equal to or larger than preset gray scale brightness in the target image line data to obtain the number of the first sequence, and counting the sub-pixels which are positioned in the second sequence and have gray scale brightness equal to or larger than the preset gray scale brightness in the target image line data to obtain the number of the second sequence;
and step A104, calculating the absolute value of the sum of the first sequence number and the second sequence number, and taking the absolute value as the number of the sub-pixels.
The second type is a 1+2line inversion polarity format (i.e., a second inversion manner) shown in fig. 7, in which the polarity distribution of the sub-pixels is that four sub-pixels are in a cycle, i.e., the polarity distribution of "+ - +" is used for the cycle, so that the sub-pixels of the first sequence in a cycle in the target image line data to be counted are obtained under the polarity distribution, the gray scale brightness of the sub-pixels of the first sequence is counted, the sub-pixel count 1 is equal to or greater than the preset gray scale brightness, the sub-pixel count 0 is less than the preset gray scale brightness, and the sub-pixels of the second sequence in a cycle in the target image line data are counted, the gray scale brightness of the sub-pixels of the second sequence is counted, the sub-pixel count-1 is equal to or greater than the preset gray scale brightness, and the sub-pixel count 0 is less than the preset gray scale brightness, so that the number of the sub-pixels of each line of the target image line data is sequentially determined.
Specifically, referring to fig. 7, assuming that the number of positive and negative polarity sub-pixel differences that cause polarity excessive deviation in the single-line target image line data is 4, and assuming that the preset line number that causes dithering in the voltage of the common electrode is 2, counting the 1 st sub-pixel in a cycle and the 2 nd sub-pixel in a cycle with the first sequence as a cycle, in the sequential detection process of the first line target image line data to the tenth line target image line data shown in fig. 7, respectively detecting that the number of sub-pixels located in the first sequence and equal to or greater than the preset gray-scale brightness in the second line target image line data to the fourth line target image line data is 6, the number of sub-pixels located in the second sequence and equal to or greater than the preset gray-scale brightness is 0, the number of sub-pixels located in the second sequence and equal to or greater than the preset gray-scale brightness is-1, the number of sub-pixels located in the second sequence and equal to or greater than the preset gray-scale brightness is 0, that the number of sub-pixels located in the second sequence and the second sequence is 6, that the number of sub-pixels located in the second sequence and the first sequence and the fourth line target image line data is 6, respectively calculating the number of sub-pixels and the first sequence and the fourth line target image line data is 5; detecting that the sub-pixel count which is positioned in the first sequence and is equal to or more than the preset gray-scale brightness in the sixth line target image line data to the ninth line target image line data is 1, the sub-pixel count smaller than the preset gray-scale brightness is 0, the sub-pixel count which is positioned in the second sequence and is equal to or larger than the preset gray-scale brightness is-6, the sub-pixel count smaller than the preset gray-scale brightness is 0, namely the first sequence number of the sixth row of target image row data to the ninth row of target image row data is 1, the second sequence number is-6, the absolute value of the sum of the first sequence number and the second sequence number is calculated, the number of the sub-pixels of the sixth line target image line data to the ninth line target image line data is 5 respectively, which indicates that the second line target image line data to the ninth line target image line data have excessive deviation, and the line number with excessive deviation obviously exceeds the preset line number, and the superposition of the second line target image line data to the ninth line target image line data in the target image data is confirmed to enable the voltage of the common electrode to shake, and at the moment, the polarity of the voltage input by the data line on the target image data is required to be adjusted.
And step A20, if the number of the sub-pixels is equal to or greater than the number of the preset sub-pixels and the number of the lines of the target image line data is equal to or greater than the preset number of the lines, judging that the target image data meets the preset sub-pixel counting condition, and executing a polarity adjustment process for the data lines of the display device.
If the line number of the target image line data with excessive deviation is equal to or exceeds the preset line number, determining that the superposition of the target image line data in the target image data can cause the voltage jitter of the common electrode, then controlling the controller to carry out polarity adjustment on the voltage polarity output on the data line of the display device according to the set output control signal, so that the positive and negative polarities on the sub-pixels can be adjusted, the positive and negative polarities on the sub-pixels can be adjusted to the polarity arrangement capable of realizing positive and negative offset operation, the voltages on the sub-pixels can be adjusted, the gray scale brightness of the adjusted voltage can be infinitely close to the preset gray scale brightness, voltage balance is realized, abnormal display phenomena caused by the target image data are improved, and the image processing quality is improved.
In this embodiment, the sub-pixels in each target image line data are counted respectively, whether the number of the sub-pixels obtained by counting each target image line data is equal to or greater than the preset number of the sub-pixels is determined, if the number of the sub-pixels is equal to or greater than the preset number of the lines of the target image line data, the target image data is determined to satisfy the preset sub-pixel counting condition, and a polarity adjustment process for the data line of the display device is performed, so that an abnormal display phenomenon caused by superposition of the target image line data is improved by taking the single line data as a detection unit, and the image detection and processing precision is improved.
Further, based on the above-described second embodiment of the image processing method of the present invention, a third embodiment of the image processing method of the present invention is proposed.
Referring to fig. 9, in a third embodiment of the image processing method of the present invention, in the above-mentioned step S20, a step of performing a polarity adjustment process for a data line of a display device includes:
and step B10, outputting a first control signal, a second control signal and a third control signal.
And step B20, converting the potential of any one of the first control signal, the second control signal and the third control signal to regulate the polarity of the voltage output by the data line.
As shown in fig. 10, for performing polarity change distribution according to COF (Chip On Flex, or Chip On Film), the area polarity distribution controlled by each COF is different, the first COF "+" starts, the second "-" starts … … to sequentially circulate, and the inside is still of the dot inversion polarity type, or the 1+2line polarity type.
Although the first COF has an overall bias "+", the adjacent COFs have an overall bias "-", and the two COFs are balanced, but the single COF has no means to achieve the balance, as known from the Source IC driving principle, the minimum unit is two adjacent Data lines Data, and when the polarity is "+ - +" or "+ - + - +", the minimum two Data lines (i.e., date in fig. 10) are used as the units, and at the moment, the two adjacent units are of opposite properties, for example, when the first unit is "+ -", the adjacent unit is "- +", and the polarities between the units are offset, so that the mutual balance is achieved.
Based on the above principle, the present embodiment sends a separate control signal to each COF through the control controller, which is specifically described as follows:
the first control signal is a DOT_C signal, the second control signal is a POL signal, and the third control signal is a POLC signal.
Let the six data lines (i.e., Y1, Y2, Y3, Y4, Y5, and Y6 in fig. 11) exist in one COF, and the H/L potentials of the dot_c signal, the POL signal, and the POLC signal switch the output of the corresponding data lines. As shown in fig. 11, for example, the dot_c signal, the POL signal, and the POLC signal are all at L potential, and the polarities of the voltages output from the data lines Y1, Y2, Y3, Y4, Y5, and Y6 are sequentially adjusted to: ++, -, +, -, and-. When the potential of the POLC signal is switched to the H potential at this time, the polarities of the voltages output from the data lines Y1, Y2, Y3, Y4, Y5, and Y6 are sequentially adjusted to: -, +, and the like, to effect a transformation of the voltage output by the data line.
Optionally, after the step of adjusting the polarity of the voltage output by the data line in step B20, the image processing method further includes:
step B30, acquiring display parameters of target image data after the polarity adjustment process;
step B40, if the display parameter is determined to be within a preset display specification, stopping converting the potentials of the first control signal, the second control signal and the third control signal;
and step B50, if the display parameter is not within the preset display specification, continuing to change the potentials of the first control signal, the second control signal and the third control signal.
The preset display specification of the display parameter is that the number of lines of the target image line data with excessive polarity deviation in the adjusted target image data does not exceed the preset number of lines.
After each polarity adjustment, the display parameter of the target image data after the polarity adjustment is obtained, and since the polarity of the voltage output by the data line after the polarity adjustment affects the polarity of each sub-pixel in the target image line data, the display parameter of the target image data after the polarity adjustment obtained at this time refers to the number of sub-pixels in the target image line data after the polarity adjustment. As shown in fig. 12, fig. 12 shows the display image data after a certain polarity adjustment, taking two "H" strings 1101 as an example, the row directions are both dot inversions, and at this time, the voltage polarity 1005 inputted by the adjusted data line is the first string at "+" beginning, and the second string at "-" beginning.
In the detection of the target image data as shown in fig. 12, it is assumed that the number of lines of the target image line data with excessive deviation is not greater than the preset number of lines, that is, the display parameter of the target image data is within the preset display specification, so that the polarity of the voltage input by the current data line is considered to not cause the voltage jitter of the common electrode, and the abnormal display phenomenon does not exist in the image display based on the current data line.
If the line of the target image line data with excessive deviation in the target image data after a certain polarity adjustment still exceeds the preset line number, that is, the display parameter of the target image data is not in the preset display specification, the fact that the sub-pixels of each target image line data in the target image data which is currently being adjusted cannot counteract positive and negative polarities to avoid voltage jitter of a common electrode is indicated, and the potential of one of the DOT_C signal, the POL signal and the POLC signal is continuously converted until the display parameter of the obtained target image data is in the preset display specification.
The adjustment of the potential of one of the dot_c signal, the POL signal, and the POLC signal is performed in eight ways as listed in fig. 11, and is not limited to the order in the table.
As can be seen from fig. 11, if the controller outputs different dot_c signals, POL signals, and POLC signals (i.e., the potential of any one of the dot_c signals, the POL signals, and the POLC signals changes), the polarity on the data line may be changed.
In this embodiment, by outputting the first control signal, the second control signal, and the third control signal, the potential of any one of the first control signal, the second control signal, and the third control signal is changed, so as to adjust the voltage polarity output by the data line, thereby realizing the change of the sub-pixel polarity of each target image line data in the target image data, realizing the effect that the voltage polarity input by the data line does not cause the voltage jitter of the common electrode, and the image display based on the current data line has no abnormal display phenomenon.
The invention also proposes a display device comprising a memory, a processor and an image processing program stored on the memory and executable on the processor, which image processing program, when executed by the processor, implements the steps of the image processing method as described above.
Furthermore, the present invention proposes a computer-readable storage medium having stored thereon an image processing program which, when executed by a processor, implements the steps of the image processing method as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (6)

1. An image processing method, characterized in that the image processing method comprises the steps of:
performing image detection on the display image data, and selecting target image data meeting preset processing conditions, wherein the preset processing conditions are display image data with a polarity format of a special voltage polarity format, and the special voltage polarity format comprises a dot inversion polarity format and a 1+2line inversion polarity format;
performing line splitting on the target image data to obtain a plurality of target image line data;
executing a polarity adjustment process for a data line of a display device when the target image data satisfies a preset subpixel counting condition;
the step of executing a polarity adjustment process for a data line of a display device when the target image data satisfies a preset subpixel counting condition includes:
respectively counting sub-pixels in each target image line data, and judging whether the number of the sub-pixels counted by each target image line data is equal to or larger than a preset number of sub-pixels, wherein the number of the sub-pixels is the absolute value of the sum of the number of odd columns counted as positive numbers and the number of even columns counted as negative numbers in the target image line data, or the absolute value of the sum of the number of first sequences counted as positive numbers and the number of second sequences counted as negative numbers in the target image line data;
If the number of the sub-pixels is equal to or greater than the preset number of the lines of the target image line data of the preset number of the sub-pixels, which is obtained by judgment, is equal to or greater than the preset number of the lines, the target image data is judged to meet the preset sub-pixel counting condition, and a polarity adjustment process of the data lines of the display device is executed;
wherein, in the case that the voltage polarity of the target image line data is in the dot inversion polarity format, the step of counting the sub-pixels in each of the target image line data includes:
counting sub-pixels which are positioned in odd columns and have gray scale brightness equal to or greater than preset gray scale brightness in the target image row data to obtain the odd columns, and counting sub-pixels which are positioned in even columns and have gray scale brightness equal to or greater than preset gray scale brightness in the target image row data to obtain the even columns;
calculating the absolute value of the sum of the number of the odd columns and the number of the even columns, and taking the absolute value as the number of the sub-pixels;
in the case that the voltage polarity of the target image line data is in the 1+2line inversion polarity format, the step of counting the sub-pixels in each of the target image line data includes:
Counting the sub-pixels which are positioned in a first sequence and have gray scale brightness equal to or greater than preset gray scale brightness in the target image line data to obtain the number of the first sequence, and counting the sub-pixels which are positioned in a second sequence and have gray scale brightness equal to or greater than the preset gray scale brightness in the target image line data to obtain the number of the second sequence;
and calculating the absolute value of the sum of the first sequence number and the second sequence number, and taking the absolute value as the number of the sub-pixels.
2. The image processing method according to claim 1, wherein the step of performing image detection on the display image data to select target image data that meets a preset processing condition includes:
comparing whether the polarity format of the display image data is the same as the polarity format of preset image data, wherein the polarity format of the preset image data is the special voltage polarity format;
if the display image data are the same, judging that the display image data meet the preset processing conditions, and taking the display image data as the target image data.
3. The image processing method according to claim 1, wherein the step of performing a polarity adjustment process for a data line of the display device includes:
Outputting a first control signal, a second control signal and a third control signal;
the potential of any one of the first control signal, the second control signal and the third control signal is changed to adjust the polarity of the voltage output by the data line.
4. The image processing method according to claim 3, wherein after the step of adjusting the polarity of the voltage output from the data line, the image processing method further comprises:
acquiring display parameters of target image data after a polarity adjustment process;
if the display parameter is determined to be within a preset display specification, stopping converting the potentials of the first control signal, the second control signal and the third control signal;
if the display parameter is not within the preset display specification, continuing to change the potentials of the first control signal, the second control signal and the third control signal.
5. A display device comprising a memory, a processor and an image processing program stored on the memory and executable on the processor, which image processing program when executed by the processor implements the steps of the image processing method according to any one of claims 1-4.
6. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an image processing program which, when executed by a processor, implements the steps of the image processing method according to any one of claims 1 to 4.
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