1934 results about "Grey level" patented technology

The invention discloses a display screen image visual angle unevenness correction method and device and a storage medium, which are used for improving the optical measurement precision of a display screen Mura inspection and compensation system. Aligning the central position of the sampling camera to the central position of the calibration screen; inputting the visual angle non-uniform calibration picture with the gray scale of g into a calibration screen; detecting an ROI (Region of Interest) on the calibration screen to generate a brightness array; inputting the pure-color picture with the gray scale of g into the calibration screen, and acquiring the pure-color picture through the sampling camera to generate a pure-color display screen image; calculating a gray average value of the pure color display screen image in the ROI region, and generating a gray average value array; performing centering normalization processing on the brightness array and the gray average array to generate normalized data; calculating a correction coefficient set according to the normalized brightness mean value data and the normalized gray mean value data; generating a group of distance arrays; and according to the distance array and the correction coefficient set, constructing a visual angle non-uniform model of the calibration screen under the gray scale g.

The invention provides a display panel brightness compensation model construction method, compensation method and device, and the method comprises the steps: determining a training sample set which comprises display parameters obtained through photographing an actual display image of a preset gray scale displayed by a display panel through an image collection device, and corresponding target display parameters; and inputting the training sample set into a pre-constructed neural network model to train the neural network model to obtain a trained compensation model, wherein the compensation model is used for predicting the brightness compensation value of each pixel on the display panel based on the display parameters of the display panel. Compared with the existing Demura technology, the brightness compensation value is predicted by considering the influence of each pixel, the surrounding pixels and the image acquisition equipment, the accuracy of brightness compensation value prediction is improved, and the compensation precision and the compensation effect can be further improved.

The invention discloses a method and a system for improving Mura defect classification precision, electronic equipment and a storage medium, which are used for realizing accurate classification of Mura defects of low-gray-scale images. The method for improving the Mura defect classification precision comprises the steps of obtaining an image on a display screen to be detected; performing texture filtering processing on the image to obtain a filtered image; performing graying processing and defect segmentation processing on the filtered image to obtain a to-be-detected image; inputting the to-be-detected image into the Mura classification model to obtain a classification result; wherein the Mura classification model is obtained through the following training method: obtaining first data collected by a plurality of sensors; preprocessing the first data to obtain second data; extracting feature data in the second data; fusing the feature data according to an orthogonal sequence fusion algorithm to obtain a fusion result; and training according to a fusion result to obtain a Mura classification model.

The invention relates to the technical field of display methods of electronic displays, in particular to a display optimization method and system for a liquid crystal display screen. The method comprises the following steps: acquiring current image frame data and previous image frame data, and calculating an inter-frame difference based on a preset pixel difference threshold; performing threshold judgment based on the inter-frame difference data to obtain motion area data; calculating a gray scale change rate according to the motion area data; performing threshold interception on the gray scale change rate data to obtain response optimization target area data and non-target area data; and performing continuity evaluation on the response optimization target area data, and performing merging processing based on a continuity evaluation result to obtain a continuous rectangular target area group. According to the invention, the dynamic optimization of the liquid crystal display screen is realized by accurately identifying the motion area and carrying out gray scale change calculation, temperature adaptation adjustment and pulse width modulation, and the definition and the display effect of a motion picture are improved.

The invention provides a Demura compensation data generation method of an AMOLED (Active Matrix / Organic Light Emitting Diode) panel and related equipment. The method comprises the following steps: respectively acquiring corresponding brightness data of each pixel position on a target AMOLED display panel when a multi-stage typical gray scale is input under a multi-stage typical display brightness value and a multi-stage typical refresh rate; constructing a brightness-gray scale mapping model according to a mapping relation between the brightness data and each stage of typical gray scale; counting the brightness data to obtain a brightness mean value as standard brightness, and importing each brightness-gray scale mapping model to obtain an actual expected gray scale of each pixel position; the difference value between the actual expected gray scale and the input typical gray scale is solved, the gray scale compensation value of each pixel position is obtained and used for constructing a compensation lookup table, interpolation fitting is carried out on the compensation lookup table, the compensation lookup table of the target AMOLED display panel under the full display brightness value, the full refresh rate and the full gray scale is obtained, the brightness uniformity of the panel is improved, and the display quality of the AMOLED display panel is improved. And the production yield is improved.

The invention relates to the technical field of image recognition, in particular to a mechanical casting detection method and system based on image data analysis processing, and the method comprises the following steps: obtaining a casting image gray value, classifying according to a gray scale standard, generating a multi-layer image structure and a layering graph, setting a grid, counting pixels to form a density sequence, extracting a trend region, and building an index table; and extracting multi-angle image boundary point matching intersection points to form a coordinate matrix, screening a stable intersection point set, searching an original image comparison trend coordinate to extract an overlapping region, and generating a defect annotation image result. According to the method, an image is subjected to gray scale division to form a multi-layer structure, texture differential expression is enhanced, a pattern layer grid statistics density sequence is used for extracting a trend region, abnormal distribution positioning is achieved, boundary mutation points in a multi-view image are uniformly mapped, boundary recognition consistency and robustness are improved, and a stable boundary and the trend region are compared and marked; defect expression intuition and credibility are enhanced, and detection precision and stability are improved.

The invention relates to the technical field of liquid crystal display driving control, and discloses a high-refresh-rate liquid crystal display driving method and system, and the method comprises the steps: a motion amount detection module calculates the motion intensity of a dynamic region through inter-frame comparison; the voltage excitation adjusting module applies voltage according to dynamic / static region differentiation, and the dynamic region adopts asymmetric voltage to increase the response speed; the gray scale adjustment module dynamically optimizes the voltage amplitude based on the local contrast so as to smooth the gray scale; the self-adaptive refresh rate module fuses the motion intensity and the image type to switch a refresh rate gear; and the charge balance management module intelligently triggers regional reverse voltage pulses in a static scene to eliminate ghosting. The system eliminates ghost shadows through multi-module cooperation and dynamic charge balance management, intelligently switches refresh rate gears based on motion intensity and cooperates with voltage regulation to reduce static power consumption, adopts regional gray scale compensation to optimize detail display, and combines asymmetric high-voltage driving to improve the response speed of liquid crystal molecules.

The invention discloses a liquid crystal display screen gray scale control method based on adaptive brightness compensation, which relates to the technical field of liquid crystal display screen control, and comprises the following steps: collecting environmental spectrum distribution information and a pixel gray scale voltage response curve of a liquid crystal display screen in real time, and carrying out fusion processing to form a time sequence joint feature vector; through multi-mode synchronous sampling and time sequence joint feature vector generation, ambient light and screen content changes are accurately captured, target adjustment values of backlight power and gray scale voltage are dynamically predicted, and response lag and overshoot are avoided. Through spectral domain balancing and a self-adaptive damping scheduling mechanism, cooperative control of backlight and gray scale is optimized, high-frequency oscillation is suppressed, and linear response of a low-frequency band is ensured. Meanwhile, Gamma mapping and global color gamut calibration are dynamically refreshed, accurate adjustment of area-level brightness and gray scale is achieved, and continuity of the display effect and visual experience of a user are improved.

The invention provides a gray scale compensation method, device and system for a display panel. The gray scale compensation method for the display panel comprises the following steps: acquiring a gray scale compensation reference value group of the display panel; obtaining a current maximum brightness value and a current gray-scale value of the display panel, if the current maximum brightness value is any one of the maximum brightness values of the plurality of binding points, obtaining a corresponding gray-scale compensation coefficient group from a gray-scale compensation coefficient table corresponding to the current maximum brightness value through matching of the current gray-scale value and the gray-scale values of the plurality of binding points, otherwise, obtaining a corresponding gray-scale compensation coefficient group from a gray-scale compensation coefficient table corresponding to the current maximum brightness value; calculating a gray scale compensation coefficient table corresponding to the current maximum brightness value, and obtaining a corresponding gray scale compensation coefficient group from the gray scale compensation coefficient table through the matching of the current gray scale value and the gray scale values of the plurality of binding points; calculating a gray scale compensation value based on the gray scale compensation reference value group and the gray scale compensation coefficient group; and compensating the display panel based on the gray scale compensation value. According to the invention, the flexibility and the compensation effect of gray scale compensation can be improved.

The invention discloses a control management method and system for an LED backlight source, and relates to the technical field of backlight source control. The video decoding module is used for analyzing an input video signal and extracting an image brightness distribution entropy value and a color gamut coverage degree; the backlight partition regulation and control unit is used for dynamically adjusting a backlight partition topological structure; the prediction compensation module is used for generating a future frame brightness change trend and correcting a current backlight driving signal by using a feedforward compensation coefficient; the photoelectric sensing array is used for measuring the reflection characteristic of ambient light in real time; and the collaborative dimming controller is used for acquiring the type information of the playing equipment and loading a differential dimming strategy library. By dynamically analyzing video content characteristics, ambient light conditions and equipment information source types and adjusting a backlight partition structure and brightness output in real time, the HDR scene switching response speed is remarkably improved, the dark field gray scale identification degree is enhanced, backlight instantaneous peak power consumption is reduced, the non-linear brightness requirement of streaming media content is met at the same time, and the real-time performance of the system is improved. And better visual experience is provided for the user, and energy consumption optimization is realized.

The invention provides a brightness compensation method of a display panel and electronic equipment, and relates to the technical field of display, and the method comprises the steps: determining a brightness interval where a current display brightness value is located when it is detected that the display panel displays a to-be-displayed image at the current display brightness value; wherein the difference information of the mura image presented on the display panel with the display brightness value in the same brightness interval is within a first preset difference range; determining a gray scale interval corresponding to the brightness interval; wherein the gray scale interval corresponding to the brightness interval is determined according to the gray scale node value corresponding to the brightness interval, different brightness intervals correspond to different gray scale node values, and different gray scale intervals correspond to different brightness compensation values; and obtaining a gray-scale value of the to-be-displayed image, and compensating each pixel unit in the display panel according to the brightness compensation value corresponding to the gray-scale interval where the gray-scale value is located. According to the scheme, the brightness compensation value of the display panel can be dynamically adjusted according to the display brightness value, and the display effect is improved.

The invention discloses a brightness compensation method and electronic equipment, and relates to the technical field of electronic equipment, and the method comprises the steps that the electronic equipment obtains corresponding gray scale compensation tables of a display screen in different mura forms; and when the display screen is in the target mura form, the electronic equipment compensates the gray-scale value of each pixel in the display screen according to the compensation gray-scale value corresponding to each pixel in the gray-scale compensation table corresponding to the target mura form, and controls the pixels of the display screen to be displayed based on the gray-scale value compensated by the compensation gray-scale value. In the application, the electronic device can obtain the gray scale compensation table of the display screen in different mura forms, the operation of brightness compensation can act on various mura scenes appearing on the display screen, and the demura operation is performed for the various mura forms, so that the demura effect of the display screen is effectively improved, and the display screen can realize a uniform display effect in different scenes.

The invention provides a backlight dynamic refreshing method and system based on content change frequency, and is applied to the field of image data processing. According to the method, the inter-frame variable quantity of the current image content of the display screen is pre-collected, whether the image refreshing speed is matched with the backlight response or not is judged, the pixel change rate in unit time is calculated based on the frame difference method, the content change frequency index is reasonably divided, the backlight PWM parameters are dynamically adjusted in combination with user setting, and the display quality is improved. The response coordination of the display screen under the dynamic image is effectively improved, when the frame rate fluctuation is recognized, the gray scale compensation frame is introduced and the brightness change slope is limited, and the problems of smear, splash screen and the like caused by asynchronous refreshing can be relieved.

The invention relates to the technical field of organic light-emitting display data processing, in particular to a high-resolution organic display driving waveform generation method, which comprises the following steps of: dividing a pixel matrix into space blocks through distributed parameter analysis, extracting parasitic parameters in parallel by utilizing GPU (Graphics Processing Unit) nodes, and constructing a cross-block coupling model; generating a block parasitic parameter mapping table and a feature vector matrix; generating a segmented waveform parameter set containing curvature parameters based on the residual charge quantity data and dynamic gray scale segmented regulation and control; calling the brightness and voltage response data to execute nonlinear brightness correction, and generating a compensation pulse parameter in combination with a light intensity feedback loop; multi-mode driving strategies are classified and switched according to display content features, time sequence faults are eliminated through phase synchronization of a phase-locked loop, parasitic effect interference and brightness sudden change overshoot are effectively suppressed, gray scale compensation precision and refresh rate collaboration are improved, and display uniformity and dynamic picture smoothness are enhanced.

The invention belongs to the technical field of display, and provides a compensation circuit of a display device, a control method and the display device. The compensation circuit comprises a data receiving module, a judgment module, a data compensation module and a data transmission module which are connected in sequence; the data receiving module is used for receiving a data signal sent by the main control module; the judgment module is used for determining that an absolute value of a gray scale change value between a first pixel row and an adjacent second pixel row is greater than or equal to a preset gray scale value based on the data signal; the data compensation module is used for acquiring a digital signal correction value corresponding to the gray scale change value from a preset comparison table as a digital signal coding value of a second pixel row; and the data transmission module is used for outputting the digital signal coding value of the second pixel row to the driving circuit. The interference phenomenon can be recognized in advance, and the corresponding digital signal correction value is obtained, so that the horizontal crosstalk phenomenon is eliminated, and the quality of a display picture is improved.

The invention relates to the technical field of liquid crystal display, and provides liquid crystal display equipment based on a field order and a color image display method. An image to be displayed can be decomposed into three sub-frames based on a field sequential display technology, each sub-frame corresponds to a color field, when a liquid crystal panel is driven according to a main color gray scale value of the color field corresponding to each sub-frame, at least one backlight source corresponding to each color field is firstly driven to emit backlight of a first duration within a time period when liquid crystal molecules reach a steady state, and then the backlight source corresponding to each color field is driven to emit backlight of a second duration within a time period when the liquid crystal molecules reach the steady state. The white light of the second duration is emitted after the first duration, so that the white light is added in the backlight lightening stage of each color field, the color gamut range of the color field corresponding to each sub-frame is effectively reduced, and the color separation phenomenon is reduced. In addition, each subframe corresponds to a single color field or a mixed color field, so that the color separation phenomenon in various algorithms can be improved.

A method for driving a display panel, a drive chip and a display device. A plurality of sub-pixels form sub-pixel rows and columns. Sub-pixels in a same row have a same color, and colors of the sub-pixels in each sub-pixel row is different from that of the sub-pixels in an adjacent row. The method includes driving the sub-pixels to display in frames. Each sub-pixel column includes a plurality of sub-pixel groups. 2n sub-pixels are provided between every two sub-pixel groups connected to a corresponding data line, and the 2n sub-pixels are connected to an another adjacent data line, with n being an integer greater than or equal to 0. In a same frame, among the sub-pixels, in any two adjacent sub-pixel columns, whose colors are the same and have the high grayscale data compensation state, at least one sub-pixel has a polarity different from that of other sub-pixels.

The invention provides a display method and electronic equipment, and in the application, when the electronic equipment displays a picture, the shooting environment illumination of the picture, the brightness of a first gray scale of the picture in the shooting environment, and the brightness of a current watching environment can be obtained. The electronic equipment can determine the brightness of a first gray scale of a picture displayed in a display screen in a watching environment based on the shooting environment illumination, the display screen brightness in the shooting environment and the current watching environment brightness. And when the electronic equipment displays the picture, setting the brightness corresponding to each gray-scale value in the picture according to the brightness of the first gray scale of the picture in the determined watching environment. Besides, the electronic equipment can also obtain the brightness compression curve of the high dynamic range area in the picture, and perform tone mapping based on the brightness compression curve to restore the contrast ratio of the brightness of the pixel points in the high dynamic range area in the picture. Therefore, the contrast ratio of the highlight area in the picture displayed by the electronic equipment is higher, and the sense of reality is stronger.

The invention relates to display equipment which comprises a liquid crystal display panel, a backlight module and a control circuit. A backlight partition of the backlight module comprises at least one light-emitting unit, the light-emitting unit comprises a first blue light-emitting chip, a green light-emitting chip and a red light-emitting module, and the red light-emitting module comprises a second blue light-emitting chip and a red phosphor located above the second blue light-emitting chip. The control circuit is configured to obtain image frame data, determine input gray-scale values of all color pixels in an image partition corresponding to the backlight partition, and generate all color backlight values of the partition; and driving the green and second blue light-emitting chips based on the green and red backlight values, and not lightening the first blue light-emitting chip or driving the first blue light-emitting chip to carry out blue light brightness compensation based on a comparison algorithm processing result of the blue and red backlight values, thereby improving the display color cast problem. And meanwhile, driving data are generated based on the input gray-scale values of the color pixels to drive the panel, so that the display effect of the display equipment is improved.

The invention relates to the technical field of intelligent manufacturing, in particular to an insect protein extraction automatic production line and quality tracing method based on machine vision, which comprises the following steps of: acquiring an image and pressure data advancing time sequence, comparing a path and pressure fluctuation, identifying an abnormal section image frame, extracting a boundary and gray scale difference, and marking a structure defect. And matching action time, sorting station abnormity, combining a frame sequence and a chamber number, searching a traceability table record, updating an abnormal state field, and forming a quality traceability result set. According to the method, an image particle path and a pressure intensity signal are propelled in parallel in a time dimension, the synchronous recognition capability of image change and a physical state is enhanced, a structural anomaly judgment basis is constructed by particle boundary pixels and gray scale difference, and image time and a push rod action form uninterrupted binding through natural superposition; receiving frames and cavity serial numbers are classified into a unified serial number logic according to a time sequence, abnormal identifiers and channel information are embedded into batch fields in parallel, images are communicated, and abnormal tracing and positioning are carried out.

The invention provides a gray scale compensation method and device, a medium, electronic equipment and a program product. The method comprises the following steps: determining the actual current of each pixel point according to the global average current of a to-be-displayed image on a display panel and the column current weight of each pixel point; the global average current is determined according to the sum of the currents of all pixel points, and the current of each pixel point is determined in a pre-constructed first current lookup table through the gray-scale value of the pixel point; for each pixel point in the to-be-displayed image, determining a target current of the pixel point in a pre-constructed second current lookup table according to maximum gray scale components in R, G and B channels of the pixel point; and determining a compensation coefficient of each pixel point in a group of pre-constructed compensation coefficient lookup tables according to the actual current and the target current of each pixel point. According to the invention, the calculation involved in the algorithm is divided into a plurality of lookup tables according to the calculation process and provided for the FPGA, so that the design complexity, cost and power consumption in the FPGA are reduced.

The invention provides a display panel. The display panel comprises a plurality of sub-pixels, a plurality of storage modules and a plurality of gray scale control modules. Each storage module is electrically connected with the pixel driving circuits of the plurality of sub-pixels, each gray scale control module is electrically connected with one storage module, each gray scale control module comprises a plurality of gray scale control groups, and each gray scale control group is electrically connected between the corresponding storage module and the pixel driving circuit of one sub-pixel. Each storage module stores or outputs an image data signal when receiving a corresponding scanning signal and a bit signal, and each gray scale control group generates a gray scale control signal when receiving a plurality of corresponding clock signals and image data signals and outputs the gray scale control signal to a pixel driving circuit of a corresponding sub-pixel. Therefore, time-sharing control over light emitting durations of different sub-pixels is achieved, the multiple sub-pixels can share one storage module and one gray scale control module, and the number of transistors included in the display panel can be reduced.

The invention relates to the technical field of anomaly detection, in particular to a circuit board processing anomaly detection system which comprises an image anchoring module, a gray scale comparison module, a candidate area screening module, a gradient closing verification module and a behavior track evolution module. According to the method, by setting the gray scale anchor points in the image frames and collecting the standard gray scale values, deviation accumulation caused by the overall illumination change of the image can be effectively avoided, the response delay area is recognized through inter-frame gray scale comparison, and early intervention on the etching abnormal process is achieved; a gray scale fluctuation low-amplitude segment in an image boundary region is extracted to recognize a texture missing region, the recognition accuracy of structural blur is enhanced, fine extraction of an abnormal structural form is realized in combination with gray scale gradient chain construction and a closed error judgment mechanism, region response change trajectory tracking in a frame sequence is superposed, and the recognition accuracy of structural blur is improved. Therefore, the judgment is not limited to single-frame anomaly detection and has a time sequence evolution recognition capability, an abnormal symptom region is stably captured, and a reliable detection result is generated.

The invention discloses a multi-modal ultrasonic image intelligent analysis system based on deep learning, particularly relates to the field of ultrasonic image intelligent analysis, and is used for solving the problems of speckle noise and displacement artifacts caused by sound beam attenuation during deep abdomen scanning of a bedside ultrasonic person with a relatively high in-vivo quality index. Partition noise reduction is guided through pixel noise distribution associated with depth and attenuation, and deep micro-textures are reserved; the color flow velocity and the elastic displacement are anchored through the noise reduction gray scale edge, three-mode sub-pixel alignment is completed, and cross-channel deformation and drift are eliminated; the self-attention fusion network synchronously extracts texture, speed and hardness features on the unified alignment surface to realize coupling of a complete biological structure and dynamic information; the texture residual error rate and the flow rate matching degree form complementary evaluation, noise distribution and alignment grid real-time self-adjustment are driven, frame-by-frame iteration convergence is achieved, and image definition and feature consistency are continuously improved.

The invention discloses a display device and a defect pixel compensation method of the display device, the display device comprises a display panel and a processor, the processor determines the defect type of a defect sub-pixel and an initial gray scale value corresponding to the defect sub-pixel; determining at least one target gray-scale value according to the defect type of the defective sub-pixel, the initial gray-scale value and a plurality of to-be-displayed gray-scale values corresponding to the defective pixel to which the defective sub-pixel belongs; based on the at least one target gray-scale value, updating the to-be-displayed gray-scale values corresponding to other sub-pixels in the defective pixels; and the display panel displays the to-be-displayed image after the plurality of to-be-displayed gray-scale values corresponding to the defect pixels are updated. According to the target gray-scale value, the to-be-displayed gray-scale values of other sub-pixels except the defective sub-pixels in the defective pixels are updated, so that the display color cast problem caused by the defective sub-pixels is compensated, the perceptibility of the defective sub-pixels in human eyes is reduced, and the display effect of the display device is improved.

The invention relates to a pixel driving method, system and device. The method comprises the following steps: firstly, acquiring a normal pixel point in a first preset range where an abnormal pixel point is located based on a position coordinate of the abnormal pixel point, and acquiring a target brightness value of a preset sub-pixel of the abnormal pixel point based on an actual brightness value of the preset sub-pixel of the normal pixel point; and then based on the first brightness difference value between the preset brightness value and the target brightness value, the compensation gray scale of the preset sub-pixel of the abnormal pixel point is obtained, so that the abnormal pixel point is not compensated directly based on the actual brightness value of the abnormal pixel point. The target brightness value of the abnormal pixel point is determined on the basis of the actual brightness value of the normal pixel point around the abnormal pixel point, and the abnormal pixel point is compensated on the basis of the target brightness value, so that the brightness of the abnormal pixel point can be compensated, and the problem of over-compensation is avoided.

The invention provides an OLED (Organic Light Emitting Diode) display panel sub-pixel level color equalization compensation method and system based on a De-Mura compensation technology. The method mainly comprises the steps that a brightness industrial camera shoots brightness data of different gray scales of the OLED display panel for the first time, a brightness uniformity preprocessing process is synchronously carried out, compensation parameters are burnt into a DDIC (Double Data Integrated Circuit), whether chromaticity uniformity compensation needs to be carried out or not is selected according to the chromaticity uniformity expression after brightness uniformity compensation, and if chromaticity uniformity compensation needs to be carried out, the brightness uniformity compensation is carried out. If yes, a shot gray scale picture is determined according to the color expression condition of the OLED panel, the chroma industrial camera shoots different gray scale and chroma data of the OLED display panel for the second time, chroma data processing is carried out to obtain a compensation coefficient, the compensation coefficient acts on brightness compensation data, and therefore brightness and chroma uniformity compensation parameters are obtained; and realizing the brightness and chromaticity compensation of the OLED display panel based on the compensation parameters.

The invention discloses a brightness compensation method and a display device. The brightness compensation method comprises the following steps: for a target pixel in a display panel, obtaining a target brightness level of the display panel and a target gray-scale value of the target pixel; determining a reference gray-scale value corresponding to the target gray-scale value under the target brightness level from the first mapping data; when the reference gray-scale value comprises a reference virtual binding point value, determining offset correction data of the reference virtual binding point value under the target brightness level from the second mapping data; according to the offset correction data of the reference virtual binding point value and the brightness offset data of the reference original binding point value corresponding to the reference virtual binding point value, determining the brightness offset data of the target gray-scale value; and performing brightness compensation on the target pixel according to the brightness offset data of the target gray-scale value. According to the invention, the brightness of the display panel can be accurately compensated.

The invention provides a display panel aging compensation method and device and electronic equipment, and relates to the technical field of display, and the display panel aging compensation method comprises the steps: obtaining a display image; for at least two different display areas in the display image, respectively calculating gray scale difference degrees corresponding to the display areas; according to the gray scale difference degree of each display area, detecting whether the display image has a local static display area or not; if the display image has the local static display area, sampling the display image at a first preset sampling time interval to obtain first aging data, and performing aging compensation on a subsequent display image based on the first aging data; and if the display image does not have the local static display area, sampling the display image by adopting a second preset sampling time interval to obtain second aging data, and performing aging compensation on the subsequent display image based on the second aging data, so that the sampling precision of the aging data can be improved, and the aging compensation effect of the display panel can be improved.

The present invention discloses a driving method and a pixel circuit for a pixel circuit. The pixel circuit includes at least two driving transistors connected in parallel, and the aspect ratios of the at least two driving transistors are different; the driving method of the pixel circuit includes: obtaining the maximum display brightness value of a preset area in the to-be-displayed picture; determining whether the maximum display brightness value of the preset area is greater than a first preset value; if the maximum display brightness value of the preset area is greater than the first preset value, when the to-be-displayed gray level in the preset area is less than a preset gray level, controlling the driving transistor with the smallest aspect ratio in the pixel circuit corresponding to the preset area to drive; if the maximum display brightness value of the preset area is less than or equal to the first preset value, controlling the driving transistor with the smallest aspect ratio in the pixel circuit corresponding to the preset area to drive. The present invention can improve the mura phenomenon.