CN111340730B - Method for eliminating smear phenomenon, terminal and storage medium - Google Patents
Method for eliminating smear phenomenon, terminal and storage medium Download PDFInfo
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- CN111340730B CN111340730B CN202010121158.XA CN202010121158A CN111340730B CN 111340730 B CN111340730 B CN 111340730B CN 202010121158 A CN202010121158 A CN 202010121158A CN 111340730 B CN111340730 B CN 111340730B
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Abstract
The embodiment of the application discloses a method, a terminal and a storage medium for eliminating a smear phenomenon, wherein the method for eliminating the smear phenomenon comprises the following steps: acquiring image information of an initial image, and determining a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon; detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition according to the brightness parameter; if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate the smear phenomenon.
Description
Technical Field
The embodiment of the application relates to the technical field of terminals, in particular to a method for eliminating a smear phenomenon, a terminal and a storage medium.
Background
Active-matrix organic light emitting diodes (AMOLED) are a display technology, and compared with conventional liquid crystal displays, AMOLED has a wider viewing angle, a higher refresh rate, and a thinner size, and thus, AMOLED is increasingly widely used in terminals.
AMOLED is based on organic light emitters, which emit red, green or blue light only when a voltage is applied to them, and which emit various colors only after the ratio of the three primary colors is adjusted, in which thousands of light sources that emit only one of the colors red, green or blue are mounted on the substrate of the screen in a specific form.
However, in the case that the AMOLED display screen has low brightness, the response speed and response time of the black pixels during movement are slow, so that the smear phenomenon is generated, and the lower the brightness of the AMOLED display screen is, the more serious the smear phenomenon is, so that the effect and performance of the AMOLED display are affected, and the intelligence of the terminal is reduced.
Disclosure of Invention
The embodiment of the application provides a method for eliminating the smear phenomenon, a terminal and a storage medium, which can effectively eliminate the smear phenomenon, can ensure the display effect and performance of an AMOLED and greatly improve the intelligence of the terminal.
The technical scheme of the embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a method for eliminating a smear phenomenon, where the method includes:
acquiring image information of an initial image, and determining a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon;
Detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters;
judging whether the target area meets a preset smear condition according to the brightness parameter;
if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image;
and displaying the corrected image to eliminate the smear phenomenon.
In a second aspect, an embodiment of the present application provides a terminal, including: an acquisition unit, a determination unit, a detection unit, a judgment unit, a correction unit, a display unit,
the acquisition unit is used for acquiring the image information of the initial image;
the determining unit is used for determining a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon;
the detection unit is used for detecting the brightness of the adjacent pixels corresponding to the target area to obtain brightness parameters;
the judging unit is used for judging whether the target area meets a preset smear condition according to the brightness parameter;
the correction unit is used for performing correction processing based on the target area if the preset smear condition is met, and obtaining a corrected image corresponding to the initial image;
And the display unit displays the corrected image so as to eliminate the smear phenomenon.
In a third aspect, embodiments of the present application provide a terminal, where the terminal includes a processor and a memory storing instructions executable by the processor, and when the instructions are executed by the processor, the method for eliminating the smear phenomenon as described above is implemented.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium having a program stored thereon, for use in a terminal, the program, when executed by a processor, implementing a method for eliminating a smear phenomenon as described above.
The embodiment of the application provides a method, a terminal and a storage medium for eliminating a smear phenomenon, wherein the terminal acquires image information of an initial image and determines a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon; detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition according to the brightness parameter; if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate the smear phenomenon. That is, in the embodiment of the present application, if there is a target area that may generate a smear phenomenon in an original image, the terminal may determine whether the target area meets a preset smear condition according to brightness parameters of adjacent pixels obtained by detection, and if so, perform correction processing on the target area to obtain a corrected image, so that the corrected area in the corrected image overcomes the defect of long response time when moving, and can effectively eliminate the smear phenomenon, ensure the display effect and performance of the AMOLED, and greatly improve the intelligence of the terminal.
Drawings
FIG. 1 is a schematic diagram of an OLED device;
FIG. 2 is a schematic diagram of OLED display principle;
FIG. 3 is a schematic diagram showing normal brightness;
FIG. 4 is a schematic diagram of a low brightness display;
FIG. 5 is a schematic diagram of a pixel driving circuit;
FIG. 6 is a schematic diagram of a method for eliminating smear;
FIG. 7 is a second flow chart of a method for eliminating smear;
FIG. 8 is a third flow chart of a method for eliminating smear;
FIG. 9 is a flowchart of a method for eliminating smear;
fig. 10 is a schematic diagram of a composition structure of a terminal;
fig. 11 is a schematic diagram of a second component structure of the terminal.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not limiting of the application. It should be noted that, for convenience of description, only a portion related to the related application is shown in the drawings.
AMOLED is a display technology, in which an organic light-emitting diode (OLED) is a specific type describing a thin film display technology, i.e., an organic electroluminescence display; active Matrix (AM) refers to the pixel addressing technology behind. Currently, AMOLED technology has higher and higher share in the end application field due to its characteristics of high contrast, fast response, flexibility, etc.
Specifically, the core element of the AMOLED display mode is an OLED device, and fig. 1 is a schematic structural diagram of the OLED device, and as shown in fig. 1, the OLED device mainly includes a cathode, an electron injection layer (Electron Inject Laye, EIL), an electron transport layer (Electron Transmission Laye, ETL), an Emitting layer (EML), a hole injection layer (Hole Inject Layer, HIL), a hole transport layer (Hole Transmission Layer, HTL), and an anode. Based on the above-mentioned fig. 1, fig. 2 is a schematic diagram of the display principle of the OLED, as shown in fig. 2, when the two ends of the OLED device are pressurized, electrons enter the EML from the cathode via the EIL and ETL, and holes enter the EML from the anode via the HIL and HTL; the electrons and holes are combined into excitons inside the EML and release energy, wherein a portion of the energy is released in the form of light, thereby allowing the OLED device to emit light.
Nowadays, with the continuous development of terminal technology, the eye protection requirement of users on the display screen is higher and higher, so that the birth of an eye protection mode, a low blue light eye protection mode and the like is promoted, and meanwhile, the limit brightness of the display screen is also required to be higher and higher. For example, when the ambient brightness is low, the display screen in the terminal may correspondingly decrease the display brightness, or automatically switch to the low brightness mode.
However, for the AMOLED display screen, when switching to the low brightness mode, i.e., when the brightness of the display screen is low, a clear smear phenomenon occurs in a black icon or black region moving in the display screen, and the lower the brightness of the screen, the more obvious the smear phenomenon. Fig. 3 is a schematic view of normal brightness, and fig. 4 is a schematic view of low brightness, as shown in fig. 3 and 4, compared with the normal brightness, the image sticking phenomenon is more serious when the black area in the AMOLED display screen moves at low brightness.
Fig. 5 is a schematic diagram of a pixel driving circuit, as shown in fig. 5, the AMOLED pixel driving circuit adopts a 7T1C structure to light up an OLED device, and specifically may include 6 thin film transistors (ThinFilmTransistor, TFT) T1, T2, T3, T4, T5, T6 and 1 capacitor C, and n Scan signals Scan (n), data signals Data, a positive power voltage VDD, a negative power voltage VSS and a reference voltage Vref are connected to the circuit. When the display screen is at low brightness, for example, when the terminal is in use with lights off at night, the white 255 gray scale brightness may be below 2 nit (nit), so the voltage across the OLED device is low, only at a level slightly above the threshold voltage of the OLED device. However, in order to obtain ultra-high contrast, the gate voltage Vgs of the TFT corresponding to the black pixel is smaller than the threshold voltage Vth of the TFT, that is, the TFT corresponding to the black pixel is in an off state. Therefore, when the AMOLED display screen is charged each time, the anode of the OLED device needs to be initialized once, the initialization potential Vref is negative (about-2.5 to-5V), and the Driving TFT (T1) is in an off state at the moment, so that when the black pixel is displayed, the OLED device is actually in a diode reverse bias state, no forward current is generated, and weak reverse current exists at the same time.
In contrast, the blue OLED device has a larger voltage across it, and thus the blue pixel has a lighter degree of smear at low brightness.
That is, when the brightness of the AMOLED display screen is low, since the OLED device corresponding to the black pixel is in a reverse bias state and the forward voltage across the two ends of the OLED device is low at low brightness, the response speed and the response time of the black pixel when moving are slow, so that the smear phenomenon is generated, and the lower the brightness of the AMOLED display screen is, the more serious the smear phenomenon is.
In order to overcome the above-mentioned defect, in the embodiment of the present application, if there is a target area that can generate a smear phenomenon in an original image, the terminal may determine whether the target area meets a preset smear condition according to the detected brightness parameter of an adjacent pixel, if so, the terminal may perform correction processing on the target area to obtain a corrected image, so that the corrected area in the corrected image overcomes the defect of long response time when moving, and the smear phenomenon can be effectively eliminated, so that the effect and performance of AMOLED display can be ensured, and the intelligence of the terminal is greatly improved.
Specifically, no matter what the current manual or automatic brightness level of the display screen is, the terminal can detect the brightness of the adjacent pixels of the target area, if the detected brightness parameter is lower than a preset brightness threshold (such as 0.5 nit), the gray scale of the target area is lifted or overdrive processing is performed, so that the brightness of the target area can be lifted by utilizing the current characteristic of the OLED, the problem that the OLED device is in a reverse bias state can be solved, meanwhile, the forward voltage of the OLED is improved, and the smear phenomenon is further effectively eliminated.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
An embodiment of the present application provides a method for eliminating a smear, which is applied to a terminal, fig. 6 is a schematic diagram of an implementation flow of the method for eliminating a smear, as shown in fig. 6, in an embodiment of the present application, the method for eliminating a smear by a terminal may include the following steps:
In the embodiment of the application, the terminal may acquire the image information of the initial image first, and then determine the target area in the initial image based on the image information.
It should be noted that, in the embodiment of the present application, the target area may be at least one area formed by at least one pixel in the initial image. Specifically, in the present application, the terminal may determine at least one pixel that may generate a smear phenomenon from all pixels in the initial image by using the image information, where a plurality of pixels that may generate a smear phenomenon may be distributed in different target areas.
That is, in embodiments of the present application, the target region may be used to screen and determine pixels that produce smear in the initial image.
It should be noted that, in the embodiment of the present application, the terminal may be any device having communication and storage functions, for example: tablet computers, cell phones, electronic readers, remote controllers, personal computers (Personal Computer, PCs), notebook computers, vehicle-mounted devices, network televisions, wearable devices and the like.
It is understood that in embodiments of the present application, the terminal may be configured with an AMOLED display screen, where the AMOLED display screen may perform adjustment of display brightness. Specifically, the terminal can adjust the display brightness of the AMOLED display screen through the received adjustment instruction, and can also adjust the display brightness of the AMOLED display screen in real time through the detection of the ambient brightness.
For example, in the embodiment of the present application, the terminal may perform acquisition of image information of an initial image through a display Driver IC (Driver IC). The display driving IC is a main part of a display screen imaging system, integrates components such as a resistor, a regulator, a comparator, a power transistor and the like, is responsible for driving a display, controlling driving current and the like, and is divided into a static driving method and a dynamic driving method.
Further, in the embodiment of the present application, the image information of the initial image may be a gray value, that is, a gray value of each pixel in the initial image.
Accordingly, in the present application, when the terminal determines the target area by using the image information, the target pixel in the initial image may be determined according to the gray value, and then the target area may be obtained based on the target pixel. The target pixel may be a pixel with a lower gray value, such as a black pixel.
It may be understood that, in the embodiment of the present application, the target area determined by the terminal based on the target pixel may be one black pixel in the initial image, or may be an icon formed by a plurality of black pixels in the initial image, or may be an image formed by a plurality of black pixels in the initial image.
Further, in the embodiment of the present application, the image information of the initial image may be a gamma value, that is, a gamma value of each pixel in the initial image, in addition to the gray value.
It will be appreciated that in the embodiments of the present application, the Gamma (Gamma) value is also referred to as a Gamma coefficient, and each display device has its own Gamma value, which is different, specifically, the device output brightness is equal to the Gamma power of the voltage, and any device Gamma is not substantially equal to 1, which is an ideal linear state. The larger the Gamma value, the higher the brightness of the image, and the smaller the Gamma value, the lower the brightness of the image. If the image is too dark or too bright, the brightness can be changed by adjusting the Gamma value.
Correspondingly, in the application, when the terminal determines the target area by using the image information, the gamma value of each pixel can be compared with the preset gamma threshold value, then the target pixel in the initial image is determined by using the comparison result, and then the target area is obtained based on the target pixel. For example, for a pixel in the initial image, if the comparison result is that the gamma value of the pixel is less than the preset gamma threshold, the pixel may be determined as the target pixel.
That is, in the embodiment of the present application, the target pixel determined by the terminal using the gamma value is a pixel having a low luminance in the initial image, and thus the target pixel may be a black pixel or another pixel other than the black pixel, for example, a blue pixel.
It may be understood that, in the embodiment of the present application, the target area determined by the terminal based on the target pixel may be one low-brightness pixel in the initial image, or may be an icon formed by a plurality of low-brightness pixels in the initial image, or may be an image formed by a plurality of low-brightness pixels in the initial image.
In the embodiment of the application, after acquiring the image information of the initial image and determining the target area in the initial image according to the image information, the terminal can perform brightness detection on the adjacent pixels corresponding to the target area, thereby obtaining the brightness parameters of the adjacent areas.
In the embodiment of the present application, after determining the target area that may generate the smear phenomenon from the initial image, the terminal may first determine the adjacent pixels in the initial image with the target area as the center. Specifically, the terminal may take one pixel in the target area as a center point of the target area, and then may perform division of the relevant area based on the center point, so that adjacent pixels of the target area may be obtained.
It is understood that in the embodiment of the present application, the relevant area may be formed of the target area and the adjacent pixels, that is, the pixels outside the target area in the relevant area divided based on the center point, that is, the adjacent pixels of the target area. The relevant area may be an area with any shape in the initial image, which is not specifically limited in this application.
It can be seen that, in the embodiment of the present application, the adjacent pixel corresponding to the target area may be regarded as a pixel in the background area of the target area.
Further, in the embodiment of the present application, after determining the adjacent pixels adjacent to the target area from the initial image, when performing brightness detection on the adjacent pixels corresponding to the target area, the terminal may sequentially perform brightness detection on all the adjacent pixels first, so as to obtain all the corresponding brightness values. Wherein, one adjacent pixel corresponds to one brightness value, that is, the terminal needs to obtain each adjacent pixel of the target area to perform brightness detection, so as to obtain all corresponding brightness values.
It should be noted that, in the embodiment of the present application, after detecting and obtaining all the luminance values of all the adjacent pixels, the terminal may further calculate and obtain the luminance parameters corresponding to the adjacent pixels according to all the luminance values.
It may be appreciated that in the embodiment of the present application, the luminance parameter may determine the luminance level of the target pixel, and specifically, when the terminal performs the acquisition of the luminance parameter based on all the luminance values, the terminal may perform a mathematical operation on all the luminance values, so that the luminance parameter may be obtained by calculation.
Further, in the embodiments of the present application, the terminal may calculate the luminance parameter through various calculation methods based on the entire luminance values. For example, the terminal may calculate an average value of all luminance values and then take the average value as a luminance parameter; the terminal can also assign different weight values to the brightness values of different adjacent pixels, so as to calculate and obtain brightness parameters.
And step 103, judging whether the target area meets the preset smear condition according to the brightness parameter.
In the embodiment of the application, after brightness detection is performed on the adjacent pixels corresponding to the target area and the brightness parameter is obtained, the terminal can determine whether the target area meets the preset smear condition according to the brightness parameter.
It can be understood that in the embodiment of the present application, the terminal may set a determination condition for generating the smear phenomenon based on the brightness level of the image, that is, a preset smear condition, that is, in the embodiment of the present application, the smear phenomenon is not necessarily generated when the target pixel exists in the initial image, but the terminal needs to determine whether the smear phenomenon is generated by combining the brightness of the display screen, so that the terminal needs to preset the preset smear condition.
It should be noted that, in the embodiment of the present application, in order to obtain a more accurate determination result, the terminal may determine whether the preset smear condition is satisfied by using the luminance parameters corresponding to the adjacent pixels of the target area, that is, whether the luminance level of the initial image is high or low, the terminal only needs to refer to the luminance parameters of the adjacent pixels adjacent to the target area, which may be used as the background of the target area, to further determine whether the smear phenomenon occurs in the target area.
Further, in the embodiment of the present application, the terminal may also directly detect and obtain the overall brightness corresponding to the initial image, so that after determining the target area, it may directly determine whether the target area meets the determination of the preset smear condition by using the overall brightness of the initial image.
It should be noted that, in the embodiment of the present application, when the terminal determines whether the target area meets the preset smear condition according to the brightness parameter, the terminal may compare the brightness parameter with the preset brightness threshold value to obtain a comparison result, so as to further determine whether the target area meets the preset smear condition according to the comparison result, that is, determine whether the target area may generate a smear phenomenon.
Correspondingly, in the application, if the terminal judges whether the target area meets the preset smear condition by using the overall brightness of the initial image, the terminal can compare the overall brightness of the initial image with the preset brightness threshold value to obtain a comparison result, so that whether the target area meets the preset smear condition can be further judged according to the comparison result, namely whether the target area can generate a smear phenomenon is determined.
It should be noted that, in the embodiment of the present application, the preset brightness threshold may be a fixed brightness value preset by the terminal, or may be an adjustable brightness value determined in real time by the terminal based on the current display brightness of the display screen. The preset brightness threshold may be, for example, 0.5nit.
And 104, if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image.
In the embodiment of the application, after judging whether the target area meets the preset smear condition according to the brightness parameter, if the target area meets the preset smear condition, that is, if the target area moves to generate a smear phenomenon, the terminal needs to perform correction processing based on the target area, so that correction of the initial image can be realized, and a corrected image is obtained.
It should be noted that, in the embodiment of the present application, if the terminal determines that the pixel in the target area may generate the smear phenomenon, the terminal needs to perform the correction processing, so as to eliminate the smear phenomenon. Specifically, when eliminating the smear phenomenon, the terminal mainly performs correction processing for the target pixel in the target area.
It can be understood that in the embodiment of the present application, when the terminal performs the correction processing based on the target area, the gray value of the target pixel in the target area may be directly increased, so that the corrected area may be obtained.
Further, in the embodiment of the present application, after performing the correction processing on the target area and obtaining the corrected area, the terminal may further complete the correction processing on the initial image by using the corrected area, and obtain the corrected image.
In the embodiment of the present application, the terminal completes the correction process by lifting the gray value of the pixel in the target area, which may be understood as correcting the gray value of the initial image, so that the terminal may obtain the corrected image corresponding to the initial image based on the corrected area.
It can be understood that in the embodiment of the present application, when the terminal performs the correction process based on the target area, the terminal may also perform the adjustment process on the initial differential pressure of the target pixel in the target area, so as to obtain the corresponding adjusted differential pressure.
Further, in the embodiment of the present application, after performing correction processing on the target area and obtaining the adjusted pressure difference, the terminal may further complete correction processing on the initial image based on the adjusted pressure difference, and obtain the corrected image.
In the embodiment of the present application, the terminal completes the correction process by adjusting the initial pressure difference of the pixels in the target area, which may be understood as correcting the pixel pressure difference of the initial image, so that the terminal may obtain the corrected image corresponding to the initial image based on the adjusted pressure difference.
In the embodiment of the application, if the target area meets the preset smear condition, the terminal performs correction processing based on the target area, and then displays the corrected image corresponding to the initial image after obtaining the corrected image, so that the smear phenomenon can be eliminated.
It should be noted that, in the embodiment of the present application, the target area in the initial image may generate a smear phenomenon, specifically, if the brightness of the adjacent pixels is low, the target area formed by the target pixels may have a problem of slow response speed and long response time when moving, so that the smear phenomenon may be generated. In order to eliminate the smear phenomenon, the terminal needs to increase the response speed of the target pixel, specifically, the terminal can shorten the response time of the target pixel when moving by increasing the gray value of the target pixel, and can also shorten the response time of the target pixel when moving by adjusting the original pressure difference of the target pixel, so that the smear phenomenon can not be generated in the corrected image after the correction processing.
That is, in the present application, the corrected image obtained after the correction processing of the initial image does not have the smear phenomenon, and therefore, the terminal displays the corrected image, so that the smear phenomenon can be eliminated.
Therefore, in the present application, by the method for eliminating the smear according to the steps 101 to 105, when there is a target area that may generate the smear in the initial image, the terminal may perform the correction processing on the target area, so as to obtain the corrected image. Specifically, the terminal may utilize the current characteristic of the OLED, and after the gray value corresponding to the target area is raised, or after the initial voltage difference corresponding to the target area is adjusted, the brightness in the target area in the AMOLED display screen is raised, the reverse bias state of the target pixel OLED device in the target area is changed, and the forward voltage of the OLED is raised, so that the response speed of the corrected area in moving is raised, the response time is reduced, and further the smear phenomenon is eliminated.
According to the method for eliminating the smear phenomenon, which is provided by the embodiment of the application, a terminal acquires image information of an initial image and determines a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon; detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition according to the brightness parameter; if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate the smear phenomenon. That is, in the embodiment of the present application, if there is a target area that may generate a smear phenomenon in an original image, the terminal may determine whether the target area meets a preset smear condition according to brightness parameters of adjacent pixels obtained by detection, and if so, perform correction processing on the target area to obtain a corrected image, so that the corrected area in the corrected image overcomes the defect of long response time when moving, and can effectively eliminate the smear phenomenon, ensure the display effect and performance of the AMOLED, and greatly improve the intelligence of the terminal.
Based on the above embodiment, in another embodiment of the present application, the method for obtaining a corrected image corresponding to the initial image by performing the correction processing based on the target area by the terminal may include the following steps:
and 201, carrying out gray scale lifting processing on the target area according to preset gray scale parameters to obtain a corrected area corresponding to the target area.
In the embodiment of the present application, if the target area meets a preset smear condition, that is, if the movement of the target area generates a smear phenomenon, the terminal needs to perform correction processing based on the target area, and when performing correction processing, the terminal may perform lifting processing on a gray value corresponding to the target area according to a preset gray parameter, and then complete correction of the target area to obtain a corrected area.
It can be understood that in the embodiment of the present application, since the gray value of the target pixel in the target area is lower, such as a black pixel, and the TFT corresponding to the target pixel in the target area is in an off state, so that the OLED device is in a diode reverse bias state, and weak reverse current exists, and meanwhile, since the brightness parameter of the adjacent pixel is also lower, the forward voltage across the two ends of the corresponding OLED device is also lower, when the target area moves, the target area needs to reverse the internal reverse current first, and then electrons and holes are injected from the cathode and anode respectively through a weak electric field, so that the response time is prolonged, and the occurrence of the smear phenomenon is caused. In order to eliminate the smear phenomenon, the terminal may perform lifting processing on the gray value corresponding to the target pixel in the target area, specifically, may lift the gray value of the target pixel to a preset gray threshold, so as to change the off state of the TFT corresponding to the target pixel, and solve the problem that the OLED device is in the diode reverse bias state.
For example, in the present application, if the target pixel in the target area is a black pixel, that is, the gray value of the target pixel is 0 and the preset gray threshold is 3, the terminal may convert the black pixel into a pixel with the gray value of 3, that is, change the gray value of the target pixel through the process of performing the gray lifting on the black pixel by the Driver IC.
In the embodiment of the present application, after the terminal performs the correction process based on the target area, even if the brightness of the adjacent pixels serving as the background is low after the corrected area is obtained, since the OLED corresponding to the pixels in the corrected area is not in the reverse bias state and no reverse current exists, the internal reverse current does not need to be reversed in the forward pressurization process when the corrected area moves, so that the response time is greatly shortened, and the occurrence of the smear phenomenon is avoided.
It may be understood that, in the embodiment of the present application, the preset gray threshold may be a gray value preset by the terminal, or may be an adjustable gray value set by the terminal in combination with a plurality of parameters such as the current display brightness of the display screen, the brightness parameters of the adjacent pixels, and the like.
Step 202, obtaining a corrected image based on the corrected region.
In the embodiment of the application, after the terminal performs lifting processing on the gray value corresponding to the target area according to the preset gray parameter to obtain the corrected area corresponding to the target area, the terminal can obtain the corrected image corresponding to the initial image based on the corrected area.
It can be understood that in the embodiment of the present application, after the terminal performs the process of increasing the gray value based on the target area and increases the gray value of the target pixel to the preset gray threshold, the OLED corresponding to the pixel in the corrected area is no longer in the reverse bias state, so that the response time during the movement can be greatly shortened, that is, the terminal does not generate the smear phenomenon based on the corrected image obtained by the corrected area.
In an embodiment of the present application, further, the method for obtaining a corrected image corresponding to the initial image by performing correction processing based on the target area by the terminal may further include the following steps:
step 203, adjusting the initial pressure difference corresponding to the target area according to the preset voltage parameter to obtain an adjusted pressure difference corresponding to the initial pressure difference, so as to obtain a corrected image.
In the embodiment of the present application, if the target area meets a preset smear condition, that is, if a smear phenomenon occurs in the movement of the target area, the terminal needs to perform correction processing based on the target area, and when performing correction processing, the terminal may also perform adjustment processing on an initial differential pressure corresponding to the target area according to a preset voltage parameter, so as to obtain an adjusted differential pressure corresponding to the initial differential pressure.
It can be understood that in the embodiment of the present application, another main reason why the smear phenomenon occurs when the target area moves is that, due to the lower brightness parameter of the adjacent pixels, the forward voltage across the two ends of the corresponding OLED device is also lower, which may be only slightly higher than the threshold voltage of the OLED device, so that when the target area moves, electrons and holes can be injected from the cathode and the anode through only a weak electric field, thereby prolonging the response time and causing the smear phenomenon. In order to eliminate the smear phenomenon, the terminal can adjust the corresponding initial pressure difference in the target area, and forward cross-pressure at two ends of the OLED device is improved, so that the adjusted pressure difference corresponding to the initial pressure difference is obtained, the correction of the initial image is completed, and the smear phenomenon can be eliminated by the corrected image.
For example, in the present application, when the terminal eliminates the smear phenomenon, the target area may be corrected by an overdrive (overdrive) method in addition to the above-mentioned method of increasing the gray value. Specifically, based on the problem of long response time caused by too low pressure difference at two ends of the OLED device, the terminal can input high potential into the target area, so that forward current is rapidly generated inside the OLED device, and then the potential is reduced back to a preset voltage parameter, so that the response time can be greatly shortened, and the phenomenon of smear is avoided in the corrected image.
It can be understood that in the embodiment of the present application, the preset voltage parameter may be a voltage value preset by the terminal, or may be an adjustable voltage value set by the terminal in combination with a plurality of parameters such as the current display brightness of the display screen, the brightness parameter of the adjacent pixel, and the like.
Further, in the embodiment of the application, based on the previous experimental data, when the brightness parameter of the adjacent pixels in the target area is smaller than the preset brightness threshold (0.5 nit), after the black pixels in the target area are lifted from 0 gray scale to 3 gray scale, the brightness of the target area is lifted to 0.0003nit, so that the problem of smear can be effectively solved.
Meanwhile, the black state brightness is improved under low brightness, so that the problem of contrast reduction is unavoidable, the white state picture brightness is 1.85nit, the black state brightness is 0.00007nit and the improved brightness is 0.0003nit under the lowest brightness based on the prior verification data. I.e. the contrast ratio drops from 25181 to 5859; however, due to the visual characteristics of human eyes, the sensitivity of human eyes to information such as color, contrast and the like is reduced at very low brightness, and the human eyes are only sensitive to brightness, so that the reduction of the contrast of the degree is acceptable at very low brightness.
According to the method for eliminating the smear phenomenon, which is provided by the embodiment of the application, a terminal acquires image information of an initial image and determines a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon; detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition according to the brightness parameter; if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate the smear phenomenon. That is, in the embodiment of the present application, if there is a target area that may generate a smear phenomenon in an original image, the terminal may determine whether the target area meets a preset smear condition according to brightness parameters of adjacent pixels obtained by detection, and if so, perform correction processing on the target area to obtain a corrected image, so that the corrected area in the corrected image overcomes the defect of long response time when moving, and can effectively eliminate the smear phenomenon, ensure the display effect and performance of the AMOLED, and greatly improve the intelligence of the terminal.
Based on the foregoing embodiment, in another embodiment of the present application, fig. 7 is a second implementation flow chart of a method for eliminating a smear phenomenon, as shown in fig. 7, before determining whether a target area meets a preset smear condition according to a brightness parameter, that is, before step 103, the method for eliminating a smear phenomenon by a terminal may further include the following steps:
In the embodiment of the application, the terminal may first determine the current display brightness of the display screen. The current display brightness is the current brightness level of the display screen and is used for determining the brightness degree of the display screen in real time.
It can be understood that in the embodiment of the present application, when the terminal sets the preset smear condition, the preset smear condition may be adjusted based on the current display brightness of the display screen, so as to more accurately determine whether to generate the smear phenomenon.
And 107, determining a preset brightness threshold according to the current display brightness.
In the embodiment of the present application, after determining the current display brightness, the terminal may further determine the preset brightness threshold according to the current display brightness.
It should be noted that, in the embodiment of the present application, the preset brightness threshold may be a fixed brightness value preset by the terminal, or may be an adjustable brightness value determined in real time by the terminal based on the current display brightness of the display screen.
Specifically, in the embodiment of the present application, when the terminal determines the preset luminance threshold according to the current display luminance, the higher the current display luminance, the larger the preset luminance threshold is set, and the lower the current display luminance, the smaller the preset luminance threshold is set.
Further, in the embodiment of the present application, since the terminal determines the preset brightness threshold based on the current display brightness, when the terminal determines whether the target area will generate the smear phenomenon by using the preset brightness threshold, the terminal can consider the real-time brightness level of the display screen, so that a more accurate determination result can be obtained.
In an embodiment of the present application, further, fig. 8 is a schematic diagram of a third implementation flow chart of a method for eliminating a smear phenomenon, and as shown in fig. 8, a method for determining, by a terminal, whether a target area meets a preset smear condition according to a brightness parameter may include the following steps:
In the embodiment of the application, after brightness detection is performed on the adjacent pixels corresponding to the target area by the terminal to obtain the brightness parameter, when judging whether the target area meets the preset smear condition, the terminal can compare the brightness parameter with the preset brightness threshold value, and then further determine whether the target area generates the smear phenomenon according to the comparison result.
Further, in the embodiment of the present application, if the comparison result is that the luminance parameter is smaller than the preset luminance threshold, the terminal may consider that the luminance of the adjacent pixel serving as the background of the target area is relatively low, so that the target area may generate a smear phenomenon, and thus it may be determined that the target area meets the preset smear condition.
Further, in the embodiment of the present application, if the comparison result is that the luminance parameter is greater than or equal to the preset luminance threshold, the terminal may consider that the luminance of the adjacent pixel serving as the background of the target area is relatively high, so that the target area will not generate the smear phenomenon, and therefore it may be determined that the target area does not meet the preset smear condition.
In the embodiment of the present application, further, after the terminal acquires the image information of the initial image, the terminal may determine the target pixel that may generate the smear phenomenon in the initial image, that is, find the target area, where, if the target pixel that may generate the smear phenomenon does not exist in the initial image, that is, there is no target area, the terminal may directly display the initial image.
It can be understood that, in the embodiment of the present application, if it is determined, based on the image information of the initial image, that the target pixel with a lower gray value or a lower brightness value does not exist in the initial image, then it can be considered that the pixel in the initial image does not generate the smear phenomenon, so that the terminal does not need to perform correction processing on the initial image, but directly displays the initial image.
In an embodiment of the present application, further, fig. 9 is a schematic diagram of an implementation flow chart of a method for eliminating a smear phenomenon, as shown in fig. 9, after determining whether a target area meets a preset smear condition according to a brightness parameter, that is, after step 103, the method for eliminating a smear phenomenon by a terminal may further include the following steps:
In the embodiment of the present application, after determining whether the target area meets the preset smear condition according to the brightness parameter, if the target area does not meet the preset smear condition, that is, the movement of the target area does not generate a smear phenomenon, the terminal does not need to perform correction processing, but can directly display the initial image.
It can be understood that in the embodiment of the present application, if it is determined that the target area does not generate the smear phenomenon according to the luminance parameters corresponding to the adjacent pixels, that is, the target area does not satisfy the preset smear condition because the luminance of the adjacent pixels serving as the background of the target area is higher, the terminal does not need to perform the correction processing on the initial image, but directly displays the initial image.
According to the method for eliminating the smear phenomenon, which is provided by the embodiment of the application, a terminal acquires image information of an initial image and determines a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon; detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition according to the brightness parameter; if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate the smear phenomenon. That is, in the embodiment of the present application, if there is a target area that may generate a smear phenomenon in an original image, the terminal may determine whether the target area meets a preset smear condition according to brightness parameters of adjacent pixels obtained by detection, and if so, perform correction processing on the target area to obtain a corrected image, so that the corrected area in the corrected image overcomes the defect of long response time when moving, and can effectively eliminate the smear phenomenon, ensure the display effect and performance of the AMOLED, and greatly improve the intelligence of the terminal.
Based on the above embodiment, in still another embodiment of the present application, fig. 10 is a schematic diagram of a composition structure of a terminal, and as shown in fig. 10, the terminal 10 according to the embodiment of the present application may include an obtaining unit 11, a determining unit 12, a detecting unit 13, a judging unit 14, a correcting unit 15, and a display unit 16.
The acquiring unit 11 is configured to acquire image information of an initial image;
the determining unit 12 is configured to determine a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon;
the detecting unit 13 is configured to perform brightness detection on adjacent pixels corresponding to the target area, so as to obtain brightness parameters;
the judging unit 14 is configured to judge whether the target area meets a preset smear condition according to the brightness parameter;
the correction unit 15 is configured to perform correction processing based on the target area if the preset smear condition is satisfied, so as to obtain a corrected image corresponding to the initial image;
the display unit 16 is configured to display the corrected image to eliminate a smear phenomenon.
Further, in an embodiment of the present application, the image information includes a gray value, and the determining unit 12 is specifically configured to determine a target pixel in the initial image according to the gray value; the target region is obtained based on the target pixel.
Further, in the embodiment of the present application, the image information further includes a gamma value, and the determining unit 12 is further specifically configured to determine the target pixel in the initial image according to the gamma value and a preset gamma threshold; the target region is obtained based on the target pixel.
Further, in the embodiment of the present application, the determining unit 12 is further configured to perform luminance detection on the neighboring pixels corresponding to the target area, and determine the neighboring pixels in the initial image with the target area as a center before obtaining the luminance parameter.
Further, in the embodiment of the present application, the detecting unit 13 is specifically configured to sequentially perform brightness detection on the adjacent pixels to obtain all brightness values; wherein one adjacent pixel corresponds to one luminance value; and calculating and obtaining the brightness parameter according to the total brightness value.
Further, in the embodiment of the present application, the determining unit 14 is specifically configured to determine that the target area does not meet the preset smear condition if the brightness parameter is greater than or equal to a preset brightness threshold; and if the brightness parameter is smaller than the preset brightness threshold, judging that the target area meets the preset smear condition.
Further, in the embodiment of the present application, the determining unit 12 is further configured to determine the current display brightness before determining, according to the brightness parameter, whether the target area meets a preset smear condition; wherein the current display brightness characterizes the brightness level of the display screen; and determining the preset brightness threshold according to the current display brightness.
Further, in the embodiment of the present application, the correction unit 15 is specifically configured to perform gray-scale lifting processing on the target area according to a preset gray-scale parameter, so as to obtain a corrected area corresponding to the target area; the corrected image is obtained based on the corrected region.
Further, in the embodiment of the present application, the correction unit 15 is further specifically configured to perform adjustment processing on an initial pressure difference corresponding to the target area according to a preset voltage parameter, so as to obtain an adjusted pressure difference corresponding to the initial pressure difference, so as to obtain the corrected image.
Further, in the embodiment of the present application, the display unit 16 is further configured to directly display the initial image if the target area does not exist in the initial image after the image information of the initial image is acquired.
Further, in the embodiment of the present application, the display unit 16 is further configured to directly display the initial image after determining whether the target area meets a preset smear condition according to the brightness parameter, if the preset smear condition is not met.
Fig. 11 is a schematic diagram of a second component structure of the terminal, as shown in fig. 11, the terminal 10 according to the embodiment of the present application may further include a processor 17, a memory 18 storing instructions executable by the processor 17, and further, the terminal 10 may further include a communication interface 19, and a bus 110 for connecting the processor 17, the memory 18 and the communication interface 19.
In an embodiment of the present application, the processor 17 may be at least one of an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a digital signal processor (Digital Signal Processor, DSP), a digital signal processing device (Digital Signal Processing Device, DSPD), a programmable logic device (ProgRAMmable Logic Device, PLD), a field programmable gate array (Field ProgRAMmable Gate Array, FPGA), a central processing unit (Central Processing Unit, CPU), a controller, a microcontroller, and a microprocessor. It will be appreciated that the electronic device for implementing the above-mentioned processor function may be other for different apparatuses, and embodiments of the present application are not specifically limited. The terminal 10 may further comprise a memory 18, which memory 18 may be connected to the processor 17, wherein the memory 18 is adapted to store executable program code comprising computer operating instructions, the memory 18 may comprise a high speed RAM memory, and may further comprise a non-volatile memory, e.g. at least two disk memories.
In the embodiments of the present application, bus 110 is used to connect communication interface 19, processor 17, touch screen 19, light sensor 110, and memory 18, as well as the intercommunication among these devices.
In an embodiment of the present application, memory 18 is used to store instructions and data.
Further, in the embodiment of the present application, the processor 17 is configured to acquire image information of an initial image, and determine a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon; detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition according to the brightness parameter; if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate the smear phenomenon.
In practical applications, the Memory 18 may be a volatile Memory (RAM), such as a Random-Access Memory (RAM); or a nonvolatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (HDD) or a Solid State Drive (SSD); or a combination of memories of the above kind and providing instructions and data to the processor 17.
In addition, each functional module in the present embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional modules.
The integrated units, if implemented in the form of software functional modules, may be stored in a computer-readable storage medium, if not sold or used as separate products, and based on this understanding, the technical solution of the present embodiment may be embodied essentially or partly in the form of a software product, or all or part of the technical solution may be embodied in a storage medium, which includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or processor (processor) to perform all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The terminal acquires image information of an initial image and determines a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon; detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters; judging whether the target area meets a preset smear condition according to the brightness parameter; if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image; and displaying the corrected image to eliminate the smear phenomenon. That is, in the embodiment of the present application, if there is a target area that may generate a smear phenomenon in an original image, the terminal may determine whether the target area meets a preset smear condition according to brightness parameters of adjacent pixels obtained by detection, and if so, perform correction processing on the target area to obtain a corrected image, so that the corrected area in the corrected image overcomes the defect of long response time when moving, and can effectively eliminate the smear phenomenon, ensure the display effect and performance of the AMOLED, and greatly improve the intelligence of the terminal.
The embodiment of the present application provides a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the smear phenomenon elimination method as described above.
Specifically, the program instructions corresponding to the method for eliminating the smear in the present embodiment may be stored on a storage medium such as an optical disc, a hard disk, or a usb disk, and when the program instructions corresponding to the method for eliminating the smear in the storage medium are read or executed by an electronic device, the method includes the following steps:
acquiring image information of an initial image, and determining a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon;
detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters;
judging whether the target area meets a preset smear condition according to the brightness parameter;
if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image;
and displaying the corrected image to eliminate the smear phenomenon.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of implementations of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block and/or flow of the flowchart illustrations and/or block diagrams, and combinations of blocks and/or flow diagrams in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks and/or block diagram block or blocks.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application.
Claims (14)
1. A method for eliminating smear, the method comprising:
acquiring image information of an initial image, and determining a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon;
detecting brightness of adjacent pixels corresponding to the target area to obtain brightness parameters;
judging whether the target area meets a preset smear condition according to the brightness parameter;
if the preset smear condition is met, carrying out correction processing based on the target area to obtain a corrected image corresponding to the initial image;
And displaying the corrected image to eliminate the smear phenomenon.
2. The method of claim 1, wherein the image information includes gray values, and wherein the determining a target region in the initial image from the image information comprises:
determining a target pixel in the initial image according to the gray value;
the target region is obtained based on the target pixel.
3. The method of claim 1, wherein the image information further comprises gamma values, the determining a target region in the initial image from the image information comprising:
determining a target pixel in the initial image according to the gamma value and a preset gamma threshold value;
the target region is obtained based on the target pixel.
4. The method according to claim 1, wherein before performing brightness detection on the adjacent pixels corresponding to the target area to obtain the brightness parameter, the method further comprises:
and determining the adjacent pixels in the initial image by taking the target area as a center.
5. The method according to claim 1, wherein the performing brightness detection on the adjacent pixels corresponding to the target area to obtain brightness parameters includes:
Sequentially detecting the brightness of the adjacent pixels to obtain all brightness values; wherein one adjacent pixel corresponds to one luminance value;
and calculating and obtaining the brightness parameter according to the total brightness value.
6. The method according to claim 1, wherein the determining whether the target area meets a preset smear condition according to the brightness parameter comprises:
if the brightness parameter is greater than or equal to a preset brightness threshold, judging that the target area does not meet the preset smear condition;
and if the brightness parameter is smaller than the preset brightness threshold, judging that the target area meets the preset smear condition.
7. The method of claim 6, wherein before determining whether the target area meets a preset smear condition according to the brightness parameter, the method further comprises:
determining the current display brightness; wherein the current display brightness characterizes the brightness level of the display screen;
and determining the preset brightness threshold according to the current display brightness.
8. The method according to claim 1, wherein the performing correction processing based on the target area to obtain a corrected image corresponding to the initial image includes:
Carrying out gray scale lifting treatment on the target area according to preset gray scale parameters to obtain a corrected area corresponding to the target area;
the corrected image is obtained based on the corrected region.
9. The method according to claim 1, wherein the performing correction processing based on the target area to obtain a corrected image corresponding to the initial image includes:
and adjusting the initial pressure difference corresponding to the target area according to a preset voltage parameter to obtain an adjusted pressure difference corresponding to the initial pressure difference so as to obtain the corrected image.
10. A method according to any one of claims 1 to 3, wherein after the acquisition of the image information of the initial image, the method further comprises:
and if the target area does not exist in the initial image, directly displaying the initial image.
11. The method according to any one of claims 1 to 9, wherein after the determining whether the target area meets a preset smear condition according to the brightness parameter, the method further comprises:
and if the preset smear condition is not met, directly displaying the initial image.
12. A terminal, the terminal comprising: an acquisition unit, a determination unit, a detection unit, a judgment unit, a correction unit, a display unit,
The acquisition unit is used for acquiring the image information of the initial image;
the determining unit is used for determining a target area in the initial image according to the image information; the target area is used for determining pixels generating a smear phenomenon;
the detection unit is used for detecting the brightness of the adjacent pixels corresponding to the target area to obtain brightness parameters;
the judging unit is used for judging whether the target area meets a preset smear condition according to the brightness parameter;
the correction unit is used for performing correction processing based on the target area if the preset smear condition is met, and obtaining a corrected image corresponding to the initial image;
the display unit is used for displaying the corrected image so as to eliminate the smear phenomenon.
13. A terminal comprising a processor, a memory storing instructions executable by the processor, which when executed by the processor, implement the method of any one of claims 1-11.
14. A computer readable storage medium having stored thereon a program for use in a terminal, wherein the program, when executed by a processor, implements the method according to any of claims 1-11.
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| CN112488994B (en) * | 2020-11-17 | 2024-03-01 | 广州视源电子科技股份有限公司 | Method, device, equipment and storage medium for detecting motion characteristics of display equipment |
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