WO2022011891A1 - 液晶显示设备的画质补偿方法、装置以及终端设备 - Google Patents

液晶显示设备的画质补偿方法、装置以及终端设备 Download PDF

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WO2022011891A1
WO2022011891A1 PCT/CN2020/125951 CN2020125951W WO2022011891A1 WO 2022011891 A1 WO2022011891 A1 WO 2022011891A1 CN 2020125951 W CN2020125951 W CN 2020125951W WO 2022011891 A1 WO2022011891 A1 WO 2022011891A1
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rgb
compensation
value
liquid crystal
crystal display
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PCT/CN2020/125951
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English (en)
French (fr)
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戴宇明
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深圳创维－Rgb电子有限公司
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Priority to US17/254,009 priority Critical patent/US11776498B2/en
Publication of WO2022011891A1 publication Critical patent/WO2022011891A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/046—Dealing with screen burn-in prevention or compensation of the effects thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/02—Networking aspects
    • G09G2370/022—Centralised management of display operation, e.g. in a server instead of locally

Definitions

  • the present application relates to the field of display technology, and in particular, to an image quality compensation method, device and terminal device for a liquid crystal display device.
  • the present application provides at least an image quality compensation method, device and terminal device for a liquid crystal display device.
  • an embodiment of the present application provides an image quality compensation method for a liquid crystal display device, including:
  • the RGB value of each pixel in the image information output by the liquid crystal display device is acquired at predetermined time intervals within the preset time period, and each pixel is calculated.
  • the first compensation evaluation value is greater than or equal to the first compensation threshold value, then according to the first compensation evaluation value, the sum of each RGB, the obtained RGB offset compensation value, and the RGB value of each pixel point, for each pixel point RGB value to compensate.
  • it also includes:
  • the first compensation evaluation value is less than the first compensation threshold, then calculate the rate of change of the RGB value of each pixel point at adjacent moments to obtain the sum of the rate of change of each rate of change of each pixel point within the preset time period;
  • the second compensation evaluation value is greater than or equal to the second compensation threshold, then according to the first compensation evaluation value, the sum of each RGB, the RGB offset compensation value, and the RGB value of each pixel, the RGB value of each pixel is determined. to compensate.
  • the RGB value of each pixel is compensated according to the first compensation evaluation value, the sum of each RGB, the obtained RGB offset compensation value, and the RGB value of each pixel, including :
  • the product of the first RGB compensation ratio and the RGB offset compensation value is added to the RGB value of the corresponding pixel to compensate the RGB value of the pixel.
  • the RGB value of each pixel is compensated according to the first compensation evaluation value, the sum of each RGB, the obtained RGB offset compensation value, and the RGB value of each pixel, including :
  • the ratio of the RGB summation of each pixel point to the first compensation evaluation value is taken as the first RGB compensation ratio, and the sum of the change rates of each pixel point and the sum of the change rates of the pixel points corresponding to the first compensation evaluation value are respectively used.
  • the ratio is used as the second RGB compensation ratio;
  • the product of the first RGB compensation ratio and the RGB offset compensation value, and the product of the second RGB compensation ratio and the obtained RGB change rate compensation value are added to the RGB value of the corresponding pixel to compensate the RGB value of the pixel.
  • the RGB change rate compensation value is locally pre-stored, or obtained from a cloud platform
  • the locally pre-stored RGB change rate compensation value is determined according to the characteristic parameters of the liquid crystal display device of the terminal device; the RGB change rate compensation value obtained from the cloud platform is the cloud platform according to the location of the liquid crystal display device. The influence of the region and the climate of the region on the performance of the liquid crystal display device and the characteristics of the liquid crystal display device are issued accordingly.
  • the following method further includes:
  • the first compensation evaluation value is used to represent the magnitude of the displacement of the liquid crystal molecules of the pixel point corresponding to the first compensation evaluation value within a preset time period
  • the second compensation evaluation value is used to represent the fluctuation magnitude of the offset of the liquid crystal molecules of the pixel point corresponding to the second compensation evaluation value within a preset time period.
  • the smaller the second compensation evaluation value is the smaller the offset of the liquid crystal molecules of the pixel corresponding to the second compensation evaluation value is; the smaller the second compensation evaluation value is.
  • the larger the relative value the larger the offset of the liquid crystal molecules of the pixel corresponding to the second compensation evaluation value.
  • the second compensation threshold is determined according to the parameter characteristics of the liquid crystal display device.
  • the RGB sum is used as a value for evaluating the polarization degree of liquid crystal molecules in the liquid crystal display device, and the larger the RGB sum is, the greater the offset of the liquid crystal molecules of the corresponding pixel point;
  • the offset in some directions will be larger than expected, and the RGB value of the corresponding pixel will also increase.
  • the first compensation threshold is determined according to the parameter characteristics of the liquid crystal display device
  • the RGB offset compensation value is pre-stored locally, or obtained from a cloud platform
  • the locally pre-stored RGB offset compensation value is determined according to the characteristic parameters of the liquid crystal display device; the RGB offset compensation value obtained from the cloud platform is the cloud platform according to the location and location of the liquid crystal display device. The influence of the regional climate on the display performance of the liquid crystal display device and the characteristics of the liquid crystal display device are issued accordingly.
  • an embodiment of the present application further provides an image quality compensation device for a liquid crystal display device, including:
  • the RGB value calculation module is configured to obtain the RGB value of each pixel in the image information output by the liquid crystal display device according to a predetermined time interval within a preset time period when the screen display duration of the liquid crystal display device is greater than or equal to the preset duration , and calculate the RGB sum of the RGB values of each pixel;
  • the first selection module is configured to select the RGB summation with the largest numerical value from each RGB summation as the first compensation evaluation value
  • the image quality compensation module is configured to, if the first compensation evaluation value is greater than or equal to the first compensation threshold, according to the first compensation evaluation value, the sum of each RGB, the obtained RGB offset compensation value, and the RGB of each pixel value to compensate the RGB value of each pixel.
  • an embodiment of the present application further provides a terminal device, including a memory, a liquid crystal display, and a processor connected to the liquid crystal display, the memory stores a computer program, and the processor implements image quality compensation of the liquid crystal display device when the computer program is executed steps of the method.
  • the terminal device includes a television.
  • the embodiments of the present application further provide a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, implements the steps of an image quality compensation method for a liquid crystal display device.
  • Embodiments of the present application provide an image quality compensation method, device, and terminal device for a liquid crystal display device, which have the following technical effects:
  • An image quality compensation method, device, and terminal device for a liquid crystal display device provided by the embodiments of the present application, when the screen display duration of the liquid crystal display device is greater than or equal to a preset duration, the acquisition is obtained at predetermined time intervals within a preset time period The RGB value of each pixel, and the sum of the RGB values of the RGB values of each pixel is calculated. The RGB sum with the largest value is taken as the first compensation evaluation value. If the first compensation evaluation value is greater than or equal to the first compensation threshold, the RGB value of each pixel is compensated.
  • Whether the display image quality is poor is determined by collecting the maximum value of the RGB summation of the pixels in the preset time period, so as to start image quality compensation according to the first compensation evaluation value, each RGB summation, and the RGB offset compensation value. Its judgment is more accurate, and it is helpful for timely image quality repair and compensation after the liquid crystal display device is used for a certain period of time.
  • the algorithm is simple and easy to implement, and the execution efficiency is high while preventing program redundancy. Further, image quality compensation can be provided according to the usage time of the liquid crystal display device, which can make up for the situation that the display effect is degraded due to performance changes brought about by long-term usage.
  • FIG. 1 shows a schematic flowchart of an image quality compensation method for a liquid crystal display device provided by the present application
  • FIG. 2 shows another schematic flowchart of the image quality compensation method of the liquid crystal display device provided by the present application
  • FIG. 3 shows another schematic flowchart of the image quality compensation method of the liquid crystal display device provided by the present application
  • FIG. 4 shows a schematic structural diagram of an image quality compensation device of a liquid crystal display device provided by the present application
  • FIG. 5 shows a schematic structural diagram of a terminal device provided by the present application.
  • FIG. 1 shows a schematic flowchart of an image quality compensation method for a liquid crystal display device provided by the present application.
  • the image quality compensation method for a liquid crystal display device includes:
  • Step S110 when the screen display duration of the liquid crystal display device is greater than or equal to the preset duration, acquire the RGB value of each pixel in the image information output by the liquid crystal display device at predetermined time intervals within the preset time period, and calculate the RGB value of each pixel in the image information output by the liquid crystal display device.
  • the RGB value includes an R value, a B value, and a G value.
  • the RGB sum includes the sum of R values, the sum of B values, and the sum of G values. Since the liquid crystal display device is composed of many liquid crystal molecules, the rotation of the liquid crystal molecules is controlled by applying a voltage, which in turn affects the traveling direction of the light to change the transmittance of the external light source. G and B three primary color filter films participate in the display of the image. When the liquid crystal display device works for a long time and the screen display time reaches a certain stage, the liquid crystal molecules will tend to be polarized, and the characteristics of the liquid crystal molecules will be affected or even destroyed. There are differences in the target positions. For example, the offset in some directions will be large, while the offset in some directions will be small, which will deviate from the predetermined light transmittance, and the RGB value of the corresponding corresponding pixel will also be affected. .
  • a preset duration can be set, and when the screen display duration is greater than the preset duration, the RGB value of each pixel in the image information output by the liquid crystal display device is acquired at predetermined time intervals, and the RGB value of each pixel in the image information output by the liquid crystal display device is calculated in the preset duration. Set the RGB sum of each pixel in the time period.
  • Step S120 Select the RGB sum with the largest value from the RGB sums as the first compensation evaluation value.
  • the sum of RGB can be used as a value for evaluating the polarization degree of liquid crystal molecules in the liquid crystal display device.
  • the offset in some directions will be larger than expected, so the RGB value of the corresponding pixel will also increase.
  • the RGB sum with the largest numerical value can be used as the first compensation evaluation value.
  • This embodiment can timely and effectively determine whether the characteristics of the liquid crystal molecules in the liquid crystal display device are affected by the long-time operation of the screen, resulting in deviation of the image quality parameters, so as to take timely correction and compensation of the image quality.
  • Step S130 If the first compensation evaluation value is greater than or equal to the first compensation threshold value, then according to the first compensation evaluation value, the sum of each RGB, the obtained RGB offset compensation value, and the RGB value of each pixel, for each pixel The RGB value of a pixel is compensated.
  • the first compensation evaluation value is greater than or equal to the first compensation threshold value, it is determined that the offset of the liquid crystal molecules is abnormal and tends to be polarized, and the image quality displayed on the liquid crystal screen will be affected.
  • the sum of RGB, the obtained RGB offset compensation value, and the RGB value of each pixel point are used to compensate the RGB value of each pixel point to compensate for the loss of image quality caused by the difference in the offset of liquid crystal molecules.
  • the first compensation threshold is determined according to the parameter characteristics of the liquid crystal display device of the terminal device.
  • the RGB offset compensation value can be pre-stored locally, which is determined according to the characteristic parameters of the liquid crystal display device, or obtained from the cloud platform. Among them, the cloud platform issues the corresponding RGB offset compensation value according to the region where the liquid crystal display device is located, the influence of the climate of the region on the display performance of the liquid crystal display device, and the characteristics of the liquid crystal display device.
  • the RGB value of each pixel is acquired at predetermined time intervals within the preset time period, and Calculate the sum of the RGB values of the RGB values of each pixel.
  • the RGB sum with the largest value is taken as the first compensation evaluation value. If the first compensation evaluation value is greater than or equal to the first compensation threshold, the RGB value of each pixel is compensated.
  • it is determined whether the display image quality is poor by collecting the maximum value of the RGB summation of the pixels in the preset time period, so as to start the image quality evaluation according to the first compensation evaluation value, the sum of each RGB, and the RGB offset compensation value. compensate.
  • this embodiment can provide picture quality compensation according to the use time of the liquid crystal display device, make up for the situation that the performance change caused by the long-term use causes the display effect to decline, and help to realize that the user has no sense of the picture quality during use. Repair compensation.
  • the image quality compensation method of the liquid crystal display device further includes:
  • Step S210 if the first compensation evaluation value is less than the first compensation threshold, calculate the rate of change of the RGB value of each pixel point at adjacent moments to obtain the change of each rate of change of each pixel point within the preset time period sum of rates.
  • the deflection directions of the liquid crystal molecules in the liquid crystal display device are opposite, causing the offsets to cancel each other.
  • the rate of change of the RGB value of each pixel point at adjacent moments is calculated to obtain the sum of the rate of change of each rate of change of each pixel point within the preset time period.
  • Step S220 Select the sum of the change rates with the largest value from the sums of the respective change rates as the second compensation evaluation value.
  • the second compensation evaluation value can be used to evaluate the magnitude of fluctuation of the displacement of the liquid crystal molecules in the liquid crystal display device. The smaller this value is, the smaller the displacement of the liquid crystal molecules is.
  • Step S230 If the second compensation evaluation value is greater than or equal to the second compensation threshold, then according to the first compensation evaluation value, the sum of each RGB, the RGB offset compensation value, and the RGB value of each pixel, for each pixel RGB value to compensate.
  • the second compensation evaluation value is greater than or equal to the second compensation threshold, it is determined that the offset of the liquid crystal molecules is abnormal and tends to be polarized, and the image quality displayed on the liquid crystal screen will be affected. value to compensate.
  • the second compensation threshold is determined according to the parameter characteristics of the liquid crystal display device.
  • the image quality compensation method of the liquid crystal display device in this embodiment can further obtain the fluctuation of the RGB values of the pixel points, thereby preventing misjudgment and improving the accuracy of determining the image quality of the liquid crystal display device. It is helpful to perform image quality repair compensation in time after the liquid crystal display device is used for a certain period of time, the algorithm is simple and easy to implement, and the execution efficiency is high while preventing program redundancy. This in turn makes up for the situation where the display effect is degraded due to performance changes brought about by long-term use.
  • the first compensation evaluation value is used to represent the magnitude of the displacement of the liquid crystal molecules of the pixel point corresponding to the first compensation evaluation value within a preset time period.
  • the second compensation evaluation value is used to represent the fluctuation magnitude of the offset of the liquid crystal molecules of the pixel point corresponding to the second compensation evaluation value within a preset time period.
  • the liquid crystal display device works for a long time and the screen display time reaches a certain stage, the liquid crystal molecules will tend to be polarized, and the characteristics of the liquid crystal molecules will be affected or even destroyed. There are differences in the target positions. For example, the offset in some directions will be large, which will deviate from the predetermined light transmittance, and the RGB values of the corresponding corresponding pixels will also be affected and changed. Therefore, the first compensation evaluation value can be used to represent the magnitude of the displacement of the liquid crystal molecules of the pixel point corresponding to the first compensation evaluation value within a preset time period. The greater the sum of RGB, the greater the offset of the liquid crystal molecules of the pixel, thereby improving the judgment accuracy.
  • the second compensation evaluation value can be used to represent the fluctuation of the offset of the liquid crystal molecules of the pixel corresponding to the second compensation evaluation value within the preset time period. The smaller this value is, the smaller the offset of the liquid crystal molecules is. , and vice versa.
  • the RGB value of each pixel is compensated, including:
  • Step S4 Take the ratio of the RGB summation of each pixel to the first compensation evaluation value as the first RGB compensation ratio.
  • Step S8 The product of the first RGB compensation ratio and the RGB offset compensation value is added to the RGB value of the corresponding pixel to compensate the RGB value of the pixel.
  • the image quality compensation method of the liquid crystal display device in this embodiment can be based on the RGB offset compensation value, and the product of the first RGB compensation ratio of each pixel and the RGB offset compensation value is proportional to the RGB value of the corresponding pixel.
  • the first RGB compensation ratio is R: 50%
  • the ratio is multiplied by the corresponding R, G, and B values in the RGB offset compensation value, and the multiplied
  • the results are respectively added to the corresponding R value, B value and G value in the RGB values of the corresponding pixel point, so as to correct the RGB value of the corresponding pixel point.
  • RGB value compensation can be performed on each pixel point based on the RGB offset compensation value to compensate for the The difference in liquid crystal molecular offset causes the loss of image quality.
  • the algorithm is simple and easy to implement, and the operation efficiency is high, which can prevent program redundancy and memory consumption caused by the introduction of a large number of compensation values due to the RGB value repair compensation for a large number of pixels.
  • the RGB value of each pixel is compensated, including:
  • Step S12 respectively use the ratio of the RGB sum of each pixel to the first compensation evaluation value as the first RGB compensation ratio, and respectively use the sum of the rate of change of each pixel and the change of the pixel corresponding to the first compensation evaluation value
  • the ratio of the sum of the ratios is used as the second RGB compensation ratio.
  • Step S14 The product of the first RGB compensation ratio and the RGB offset compensation value, the product of the second RGB compensation ratio and the obtained RGB change rate compensation value are added to the RGB value of the corresponding pixel to compensate for the pixel. RGB value.
  • the RGB change rate compensation value can be pre-stored locally, which is determined according to the characteristic parameters of the liquid crystal display device of the terminal device, or obtained from the cloud platform.
  • the cloud platform issues the corresponding RGB change rate compensation value according to the location of the liquid crystal display device, the influence of the climate of the region on the performance of the liquid crystal display device, and the characteristics of the liquid crystal display.
  • the image quality compensation method of the liquid crystal display device in this embodiment can use the RGB offset compensation value as the reference to compensate the RGB value of each pixel point, so as to compensate for the difference in the offset of the liquid crystal molecules, resulting in the RGB value being different from the expected value. There is a bias. Further, the RGB change rate compensation value can also be used as a reference, and the product of the second RGB compensation ratio of each pixel point and the RGB change rate compensation value is added to the RGB value of the corresponding pixel point to compensate the RGB value of the pixel point.
  • repair compensation can also be performed through the RGB change rate compensation value, so as to make the change rate of the RGB value of the pixel point tend to be expected, and It compensates for the loss of image quality caused by the large deviation and fluctuation of liquid crystal molecules.
  • each pixel when it is determined that the liquid crystal molecules tend to be polarized and affect the displayed image quality, each pixel can be RGB based on the RGB offset compensation value and the RGB change rate compensation value. Compensation to compensate for the loss of image quality due to liquid crystal molecular offset differences and large amplitude fluctuations. At the same time, it can prevent program redundancy and memory consumption caused by introducing a large number of compensation values due to the RGB value repair compensation for a large number of pixels.
  • the image quality compensation method of the liquid crystal display device further includes:
  • Step S310 Determine whether to connect to the cloud platform.
  • the first compensation evaluation value is greater than or equal to the first compensation threshold, it is determined that image quality compensation is required, and at this time, it is determined whether to connect to the cloud platform so as to access the cloud database to download the latest image quality restoration compensation data.
  • Step S320 If connected to the cloud platform, send an image quality compensation instruction including the network address of the liquid crystal display device to the cloud platform, and obtain the RGB offset compensation value of the area where the liquid crystal display device is located by the cloud platform according to the image quality compensation instruction.
  • each region will have different degrees of polarization influence on liquid crystal molecules.
  • Shenzhen is an area with high humidity, which has a greater influence on the polarization of liquid crystal molecules of liquid crystal display devices. Therefore, by sending an image quality compensation command to the cloud platform, the RGB offset compensation value issued by the cloud platform to obtain the region where the liquid crystal display device is located according to the image quality compensation command can be obtained.
  • Step S330 If not connected to the cloud platform, obtain a pre-stored RGB offset compensation value.
  • the image quality compensation method of the liquid crystal display device in this embodiment can obtain repair compensation parameters suitable for the liquid crystal display device through the cloud platform, further improve the image quality compensation quality, and meet the user's demand for image quality. At the same time, when the network is abnormal or not connected to the Internet, the image quality compensation can be performed through the locally backed up repair compensation parameters.
  • This embodiment is applicable to various network environments.
  • the present application further provides an image quality compensation device for a liquid crystal display device, including:
  • the RGB value calculation module 410 is configured to acquire the RGB value of each pixel in the image information output by the liquid crystal display device according to a predetermined time interval within a preset time period when the screen display duration of the liquid crystal display device is greater than or equal to a preset duration. value, and calculate the RGB sum of the RGB values of each pixel.
  • the first selection module 420 is configured to select the RGB sum with the largest value from the RGB sums as the first compensation evaluation value.
  • the image quality compensation module 430 is configured to, if the first compensation evaluation value is greater than or equal to the first compensation threshold, according to the first compensation evaluation value, the sum of each RGB, the obtained RGB offset compensation value, and the compensation value of each pixel. RGB value, compensate the RGB value of each pixel point.
  • it also includes:
  • the rate-of-change calculation module is configured to calculate the rate of change of the RGB value of each pixel point at adjacent moments if the first compensation evaluation value is less than the first compensation threshold value, and obtain the variation rate of each pixel point in the preset time period. The sum of the rate of change of the rate of change.
  • the second selection module is configured to select the sum of the change rates with the largest value from the sums of the respective change rates as the second compensation evaluation value.
  • the image quality compensation module is further configured to, if the second compensation evaluation value is greater than or equal to the second compensation threshold value, according to the first compensation evaluation value, the sum of each RGB, the RGB offset compensation value, and the RGB value of each pixel, Compensate the RGB value of each pixel.
  • the image quality compensation module includes:
  • the first ratio calculation unit is configured to use the ratio of the RGB summation of each pixel to the first compensation evaluation value as the first RGB compensation ratio.
  • the first RGB compensation unit is configured to add the product of the first RGB compensation ratio and the RGB offset compensation value to the RGB value of the corresponding pixel to compensate the RGB value of the pixel.
  • the image quality compensation module includes:
  • the second ratio calculation unit is configured to take the ratio of the RGB sum of each pixel to the first compensation evaluation value as the first RGB compensation ratio, and to respectively make the sum of the change rates of each pixel correspond to the first compensation evaluation value
  • the ratio of the sum of the change rates of the pixel points is used as the second RGB compensation ratio.
  • the second RGB compensation unit is configured to add the product of the first RGB compensation ratio and the RGB offset compensation value, the product of the second RGB compensation ratio and the obtained RGB change rate compensation value to the RGB value of the corresponding pixel point to add Compensate the RGB value of this pixel.
  • it also includes:
  • the networking judgment module is configured to judge whether to connect to the cloud platform.
  • the download module is configured to send an image quality compensation instruction including the network address of the liquid crystal display device to the cloud platform if it is connected to the cloud platform, and obtain the RGB offset issued by the cloud platform according to the image quality compensation instruction to obtain the region where the liquid crystal display device is located. offset value.
  • the backup acquisition module is configured to acquire the pre-stored RGB offset compensation value if it is not connected to the cloud platform.
  • each module in the above-mentioned image quality compensation device of the liquid crystal display device can be implemented in whole or in part by software, hardware and combinations thereof.
  • the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
  • the present application further provides a terminal device, including a memory, a liquid crystal display, and a processor connected to the liquid crystal display, the memory stores a computer program, and the processor implements image quality compensation of the liquid crystal display device when executing the computer program method steps.
  • the terminal device includes a television and the like.
  • the terminal equipment includes a processor, a memory, a network interface, a liquid crystal display and an input device connected through a system bus.
  • the processor of the terminal device is used to provide computing and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium, an internal memory.
  • the nonvolatile storage medium stores an operating system and a computer program.
  • the internal memory provides an environment for the execution of the operating system and computer programs in the non-volatile storage medium.
  • the network interface of the terminal device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for compensating image quality of a liquid crystal display device is implemented.
  • the input device of the terminal device may be a touch layer covered on a liquid crystal display, a button, a trackball or a touchpad provided on the shell of the terminal device, or an external keyboard, touchpad or mouse.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures.
  • each block of the block diagrams and/or flow diagrams, and combinations of blocks in the block diagrams and/or flow diagrams can be implemented using dedicated hardware-based systems that perform the specified functions or actions. be implemented, or may be implemented in a combination of special purpose hardware and computer instructions.
  • each functional module or unit in each embodiment of the present application may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.
  • the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in this embodiment.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .
  • An image quality compensation method, device, and terminal device for a liquid crystal display device provided by the embodiments of the present application, when the screen display duration of the liquid crystal display device is greater than or equal to a preset duration, the acquisition is obtained at predetermined time intervals within a preset time period The RGB value of each pixel, and the sum of the RGB values of the RGB values of each pixel is calculated. The RGB sum with the largest value is taken as the first compensation evaluation value. If the first compensation evaluation value is greater than or equal to the first compensation threshold, the RGB value of each pixel is compensated.
  • Whether the display image quality is poor is determined by collecting the maximum value of the RGB summation of the pixels in the preset time period, so as to start image quality compensation according to the first compensation evaluation value, each RGB summation, and the RGB offset compensation value.
  • the judgment is relatively accurate, which is helpful for timely image quality repair and compensation after the liquid crystal display device is used for a certain period of time, the algorithm is simple and easy to implement, and the execution efficiency is high while preventing program redundancy.
  • image quality compensation can be provided according to the usage time of the liquid crystal display device, which can make up for the situation that the display effect is degraded due to performance changes brought about by long-term usage.

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Abstract

本申请实施例公开了一种液晶显示设备的画质补偿方法、装置以及终端设备，包括：在液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取液晶显示设备输出的图像信息中每一像素点的RGB值，并计算每一像素点的RGB值的RGB总和；从各RGB总和中选取出数值最大的RGB总和作为第一补偿评价值；若第一补偿评价值大于或等于第一补偿阈值时，则根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。本申请实施例能够根据液晶显示设备的使用时长提供画质补偿，可弥补长时间使用带来的性能变化导致显示效果下降的情况。

Description

液晶显示设备的画质补偿方法、装置以及终端设备
相关申请的交叉引用
本申请要求于2020年07月14日提交中国专利局的申请号为CN202010676664.5、名称为“液晶显示设备的画质补偿方法、装置以及终端设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种液晶显示设备的画质补偿方法、装置以及终端设备。
背景技术
显示器使用一段时间之后，会出现不同情况的性能改变，如画质会发生一定的变化。而传统技术中，大部分显示设备缺少使用期间对画质进行一定补偿修复的功能，因此，传统技术中的显示设备功能不够完善，部分未能长时间满足用户对画质的使用需求。
发明内容
本申请至少提供一种液晶显示设备的画质补偿方法、装置以及终端设备。
第一方面，本申请实施例提供了一种液晶显示设备的画质补偿方法，包括：
在液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取液晶显示设备输出的图像信息中每一像素点的RGB值，并计算每一像素点的RGB值的RGB总和；
从各RGB总和中选取出数值最大的RGB总和作为第一补偿评价值；
若第一补偿评价值大于或等于第一补偿阈值时，则根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
在一种可能的实现方式中，还包括：
若第一补偿评价值小于第一补偿阈值时，则计算在相邻时刻每一像素点的RGB值的变化率，得到在预设时间段内每一像素点的各变化率的变化率总和；
从各变化率总和中选取出数值最大的变化率总和作为第二补偿评价值；
若第二补偿评价值大于或等于第二补偿阈值时，则根据第一补偿评价值、各RGB总和、RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
在一种可能的实现方式中，根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿，包括：
分别将每一个像素点的RGB总和与第一补偿评价值的比值作为第一RGB补偿比例；
将第一RGB补偿比例与RGB偏移补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。
在一种可能的实现方式中，根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿，包括：
分别将每一像素点的RGB总和与第一补偿评价值的比值作为第一RGB补偿比例，以及分别将每一像素点的变化率总和与第一补偿评价值对应的像素点的变化率总和的比值作为第二RGB补偿比例；
将第一RGB补偿比例与RGB偏移补偿值的乘积、第二RGB补偿比例与获取到的RGB变化率补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。
在一种可能的实现方式中，所述RGB变化率补偿值是本地预存的，或者，从云平台获取的；
其中，本地预存的所述RGB变化率补偿值是根据终端设备的液晶显示设备的特性参数确定的；从云平台获取的所述RGB变化率补偿值，是所述云平台根据液晶显示设备的所在地区、所在地区的气候对液晶显示设备性能的影响、以及液晶显示设备的特性对应下发的。
在一种可能的实现方式中，若第一补偿评价值大于或等于第一补偿阈值，之后还包括：
判断是否连接至云平台；
若连接至云平台，则向云平台发送包括液晶显示设备的网络地址的画质补偿指令，并获取云平台根据画质补偿指令得到液晶显示设备所在地区的RGB偏移补偿值；
若没有连接至云平台，则获取预存的RGB偏移补偿值。
在一种可能的实现方式中，第一补偿评价值，用于表示第一补偿评价值对应的像素点的液晶分子在预设时间段内偏移的量的大小；
第二补偿评价值，用于表示第二补偿评价值对应的像素点的液晶分子在预设时间段内偏移的波动大小。
在一种可能的实现方式中，所述第二补偿评价值相对越小，说明所述第二补偿评价值对应的像素点的液晶分子的偏移量相对越小；所述第二补偿评价值相对越大，说明所述第二补偿评价值对应的像素点的液晶分子的偏移量相对越大。
在一种可能的实现方式中，所述第二补偿阈值是根据液晶显示设备参数特性确定的。
在一种可能的实现方式中，所述RGB总和作为所述液晶显示设备中评价液晶分子极化程度的数值，所述RGB总和越大则说明对应像素点的液晶分子偏移量越大；
当液晶分子出现趋于极化的现象时，在某些方向的偏移量会比预期大，在对应像 素点的RGB值也随之变大。
在一种可能的实现方式中，所述第一补偿阈值是根据液晶显示设备参数特性确定的；
所述RGB偏移补偿值是本地预存的，或者，从云平台获取的；
其中，本地预存的所述RGB偏移补偿值是根据液晶显示设备的特性参数确定的；从云平台获取的所述RGB偏移补偿值，是所述云平台根据液晶显示设备的所在地区、所在地区的气候对液晶显示设备显示性能的影响、以及液晶显示设备的特性对应下发的。
第二方面，本申请实施例还提供了一种液晶显示设备的画质补偿装置，包括：
RGB值计算模块，配置成在液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取液晶显示设备输出的图像信息中每一像素点的RGB值，并计算每一像素点的RGB值的RGB总和；
第一选取模块，配置成从各RGB总和中选取出数值最大的RGB总和作为第一补偿评价值；
画质补偿模块，配置成若第一补偿评价值大于或等于第一补偿阈值时，则根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
第三方面，本申请实施例还提供了一种终端设备，包括存储器、液晶显示器、以及连接液晶显示器的处理器，存储器存储有计算机程序，处理器执行计算机程序时实现液晶显示设备的画质补偿方法的步骤。
在一种可能的实现方式中，终端设备包括电视机。
第四方面，本申请实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现液晶显示设备的画质补偿方法的步骤。
本申请实施例提供了一种液晶显示设备的画质补偿方法、装置以及终端设备，具有以下技术效果：
本申请实施例提供的一种液晶显示设备的画质补偿方法、装置以及终端设备，当液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取每一像素点的RGB值，并计算每一像素点的RGB值的RGB值总和。并从中将数值最大的RGB总和作为第一补偿评价值，若第一补偿评价值大于或等于第一补偿阈值时，则对每一像素点的RGB值进行补偿。通过采集像素点在预设时间段内的RGB总和的最大值来判断显示画质是否不佳，从而根据第一补偿评价值、各RGB总和、RGB偏移补偿值开始进行画质补偿。其判断较为准确，有助于在液晶显示设备使用一定时长之后及时进行画质修 补补偿，算法简单易实现，在防止程序冗余的同时执行效率较高。进一步地，能够根据液晶显示设备的使用时长提供画质补偿，可弥补长时间使用带来的性能变化导致显示效果下降的情况。
附图说明
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施方式，因此不应被看作是对本申请保护范围的限定。在各个附图中，类似的构成部分采用类似的编号。
图1示出了本申请提供的液晶显示设备的画质补偿方法的一种流程示意图；
图2示出了本申请提供的液晶显示设备的画质补偿方法的另一种流程示意图；
图3示出了本申请提供的液晶显示设备的画质补偿方法的又一种流程示意图；
图4示出了本申请提供的液晶显示设备的画质补偿装置的结构示意图；
图5示出了本申请提供的终端设备的结构示意图。
具体实施方式
下面将结合附图，对实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施方式，而不是全部的实施方式。
通常在此处附图中描述和示出的实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施方式。基于本申请的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
在下文中，可在本申请的各种实施方式中使用的术语“包括”、“具有”及其同源词仅意在表示特定特征、数字、步骤、操作、元件、组件或前述项的组合，并且不应被理解为首先排除一个或更多个其它特征、数字、步骤、操作、元件、组件或前述项的组合的存在或增加一个或更多个特征、数字、步骤、操作、元件、组件或前述项的组合的可能性。
此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
除非另有限定，否则在这里使用的所有术语(包括技术术语和科学术语)具有与本申请的各种实施方式所属领域普通技术人员通常理解的含义相同的含义。所述术语(诸如在一般使用的词典中限定的术语)将被解释为具有与在相关技术领域中的语境含义相同的含义并且将不被解释为具有理想化的含义或过于正式的含义，除非在本申请的各种实施方式中被清楚地限定。
参见图1，图1示出了本申请提供的液晶显示设备的画质补偿方法的一种流程示意图，该液晶显示设备的画质补偿方法包括：
步骤S110：在液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取液晶显示设备输出的图像信息中每一像素点的RGB值，并计算每一像素点的RGB值的RGB总和。
RGB值包括R值、B值以及G值。RGB总和包括R值的总和、B值的总和以及G值的总和。由于液晶显示设备由许多液晶分子组成，通过施加电压来控制液晶分子转动，进而影响光线的行进方向使外光源透光率改变，再利用R、G、B三基色信号的不同激励，通过R、G、B三基色滤光膜参与完成图像的显示。当液晶显示设备长时间工作，其屏幕显示时长到达一定阶段时，液晶分子会出现趋于被极化的现象，此时液晶分子的特性会受到影响甚至遭到破坏，其偏转方向以及角度会与目标位置存在差异，如会在某些方向的偏移量较大，而某些方向的偏移量较小，进而偏离预定的透光率，而相应的对应像素点的RGB值也会受到影响。
在本实施例中，可以通过设定预设时长，当屏幕显示时长大于预设时长时，则按照预定时间间隔获取液晶显示设备输出的图像信息中每一像素点的RGB值，并计算在预设时间段内每一像素点的RGB总和。
步骤S120：从各RGB总和中选取出数值最大的RGB总和作为第一补偿评价值。
在本实施例中，RGB总和的多少可以作为液晶显示设备中评价液晶分子极化程度的数值，RGB总和越大则说明该像素点的液晶分子偏移量越大。当液晶分子出现趋于极化的现象时，在某些方向的偏移量会比预期大，因而在对应像素点的RGB值也随之变大。由此，可将数值最大的RGB总和作为第一补偿评价值。
本实施例可及时有效地判断出液晶显示设备中液晶分子的特性是否因为屏幕长时间工作而受到影响，导致画质参数出现偏差，以便及时采取画质修正补偿。
步骤S130：若第一补偿评价值大于或等于第一补偿阈值时，则根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
当第一补偿评价值大于或等于第一补偿阈值时，则确定液晶分子的偏移出现异常趋于极化，液晶屏幕显示的画质会受到影响，由此可根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿，以补偿因液晶分子偏移差异造成对成像画质的损失。其中，第一补偿阈值根据终端设备的液晶显示设备参数特性而定。RGB偏移补偿值可本地预存，其根据液晶显示设备的特性参数而定，或从云平台获取。其中，云平台根据液晶显示设备的所在地区，该地区的气候对液晶显示设备显示性能的影响以及液晶显示设备的特性而下发对应的RGB偏移补偿值。
本实施例的液晶显示设备的画质补偿方法，当液晶显示设备的屏幕显示时长大于或等 于预设时长时，则在预设时间段内按照预定时间间隔获取每一像素点的RGB值，并计算每一像素点的RGB值的RGB值总和。并从中将数值最大的RGB总和作为第一补偿评价值，若第一补偿评价值大于或等于第一补偿阈值时，则对每一像素点的RGB值进行补偿。本实施例通过采集像素点在预设时间段内的RGB总和的最大值来判断显示画质是否不佳，从而根据第一补偿评价值、各RG B总和、RGB偏移补偿值开始进行画质补偿。其判断较为准确，有助于在液晶显示设备使用一定时长之后及时进行画质修复补偿，算法简单易实现，在防止程序冗余的同时执行效率较高。进一步地，本实施例能够根据液晶显示设备的使用时长提供画质补偿，弥补长时间使用带来的性能变化导致显示效果下降的情况，以及有助于实现用户使用过程中对画质的无感修复补偿。
在图1的基础上，参见图2，在一个实施方式中，在步骤S130之后，液晶显示设备的画质补偿方法还包括：
步骤S210：若第一补偿评价值小于第一补偿阈值时，则计算在相邻时刻每一像素点的RGB值的变化率，得到在预设时间段内每一像素点的各变化率的变化率总和。
若第一补偿评价值小于第一补偿阈值时，存在液晶显示设备中液晶分子的偏转方向相反，导致偏移量相互抵消的情况，为了提高判断精度，防止误判的可能。当第一补偿评价值小于第一补偿阈值时，则计算在相邻时刻每一像素点的RGB值的变化率，得到在预设时间段内每一像素点的各变化率的变化率总和。
步骤S220：从各变化率总和中选取出数值最大的变化率总和作为第二补偿评价值。
第二补偿评价值多少可以作为评价液晶显示设备中液晶分子偏移的幅度波动大小，这个值相对越小则说明液晶分子的偏移量相对越小。
步骤S230：若第二补偿评价值大于或等于第二补偿阈值时，则根据第一补偿评价值、各RGB总和、RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
若第二补偿评价值大于或等于第二补偿阈值时，则确定液晶分子的偏移出现异常趋于极化，液晶屏幕显示的画质会受到影响，由此可开始对每一像素点的RGB值进行补偿。其中，第二补偿阈值根据液晶显示设备参数特性而定。
本实施例的液晶显示设备的画质补偿方法，能够进一步得到像素点的RGB值的波动情况，从而防止误判提高对液晶显示设备的画质的判断精度。有助于在液晶显示设备使用一定时长之后及时进行画质修复补偿，算法简单易实现，在防止程序冗余的同时执行效率较高。进而弥补长时间使用带来的性能变化导致显示效果下降的情况。
在一个实施方式中，第一补偿评价值，用于表示第一补偿评价值对应的像素点的液晶分子在预设时间段内偏移的量的大小。
第二补偿评价值，用于表示第二补偿评价值对应的像素点的液晶分子在预设时间段内偏移的波动大小。
当液晶显示设备长时间工作，其屏幕显示时长到达一定阶段时，液晶分子会出现趋于被极化的现象，此时液晶分子的特性会受到影响甚至遭到破坏，其偏转方向以及角度会与目标位置存在差异，如会在某些方向的偏移量较大，进而偏离预定的透光率，而相应的对应像素点的RGB值也会受到影响发生变动。由此，可将第一补偿评价值用于表示第一补偿评价值对应的像素点的液晶分子在预设时间段内偏移的量的大小。RGB总和越大则说明该像素点的液晶分子偏移量越大，从而提高判断精度。
进一步地，若第一补偿评价值小于第一补偿阈值时，存在液晶显示设备中液晶分子的偏转方向相反，导致偏移量相互抵消的情况，为了进一步地提高判断精度防止误判。可将第二补偿评价值用于表示第二补偿评价值对应的像素点的液晶分子在预设时间段内偏移的波动大小，这个值相对越小则说明液晶分子的偏移量相对越小，反之越大。
在一个实施方式中，根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿，包括：
步骤S4：分别将每一个像素点的RGB总和与第一补偿评价值的比值作为第一RGB补偿比例。
步骤S8：将第一RGB补偿比例与RGB偏移补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。
本实施例的液晶显示设备的画质补偿方法，可以RGB偏移补偿值为基准，每一个像素点的第一RGB补偿比例与RGB偏移补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。如，第一RGB补偿比例为R：50％、G：80％、B：60％，则将该比例与RGB偏移补偿值中对应的R、G、B的值相乘，将相乘的结果分别与对应像素点的RGB值中相应的R值、B值和G值相加，从而修正对应像素点的RGB值。
本实施例的液晶显示设备的画质补偿方法，当判断液晶分子出现趋于极化现象影响显示的画质时，可基于RGB偏移补偿值对每一像素点进行RGB值补偿，以补偿因液晶分子偏移差异造成对成像画质的损失。同时，算法简单且易实现，运算效率较高，可防止因对大量像素点的RGB值修复补偿而引入大量补偿值造成的程序冗余，以及内存的消耗。
在一个实施方式中，根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿，包括：
步骤S12：分别将每一像素点的RGB总和与第一补偿评价值的比值作为第一RGB补偿比例，以及分别将每一像素点的变化率总和与第一补偿评价值对应的像素点的变化率总和的比值作为第二RGB补偿比例。
步骤S14：将第一RGB补偿比例与RGB偏移补偿值的乘积、第二RGB补偿比例与获取到的RGB变化率补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。
RGB变化率补偿值可本地预存，其根据终端设备的液晶显示设备的特性参数而定，或从云平台获取。其中，云平台根据液晶显示设备的所在地区，该地区的气候对液晶显示设备性能的影响以及液晶显示特性而下发对应的RGB变化率补偿值。
本实施例的液晶显示设备的画质补偿方法，可以RGB偏移补偿值为基准，对每一个像素点的RGB值进行补偿，从而起到弥补液晶分子偏移的量存在差异导致RGB值与预期存在偏差的作用。进一步地，还可以RGB变化率补偿值为基准，每一个像素点的第二RGB补偿比例与RGB变化率补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。因为，若液晶分子趋于极化会存在偏移波动较大的情况，导致总体偏移的幅度波动大于预期，各像素点的RGB值也随之以较大幅度变化而影响画质的呈现。因而在通过RGB偏移补偿值对各像素点的RGB值进行补偿的基础上，还可通过RGB变化率补偿值进行修复补偿，以起到使得像素点的RGB值的变化率趋于预期，以及弥补因液晶分子偏移波动较大造成对成像画质的损失的作用。
本实施例的液晶显示设备的画质补偿方法，当判断液晶分子出现趋于极化现象影响显示的画质时，可基于RGB偏移补偿值和RGB变化率补偿值对每一像素点进行RGB补偿，以补偿因液晶分子偏移差异和幅度波动较大造成对成像画质的损失。同时，可防止因对大量像素点的RGB值修复补偿而引入大量补偿值造成的程序冗余，以及内存的消耗。
在图1的基础上，参见图3，在一个实施方式中，若第一补偿评价值大于或等于第一补偿阈值，在步骤S130之后，液晶显示设备的画质补偿方法还包括：
步骤S310：判断是否连接至云平台。
若第一补偿评价值大于或等于第一补偿阈值，则确定需要进行画质补偿，此时会判断是否连接至云平台，以便访问云端数据库，以下载最新的画质修复补偿数据。
步骤S320：若连接至云平台，则向云平台发送包括液晶显示设备的网络地址的画质补偿指令，并获取云平台根据画质补偿指令得到液晶显示设备所在地区的RGB偏移补偿值。
每一个地区由于气候等原因，会对液晶分子产生不同程度的极化影响。如，深圳地区属于湿度较大的地区，这种地区对液晶显示设备的液晶分子的极化影响较大一点。因而可通过向云平台发送画质补偿指令，从而获取云平台根据画质补偿指令得到液晶显示设备所在地区而下发的RGB偏移补偿值。
步骤S330：若没有连接至云平台，则获取预存的RGB偏移补偿值。
本实施例的液晶显示设备的画质补偿方法，可通过云平台获取适合于液晶显示设备的 修复补偿参数，进一步提高画质补偿质量，满足用户对画质的需求。同时当网络存在异常或未联网时，可通过本地备份的修复补偿参数进行画质补偿。本实施例适用于多种网络环境。
参见图4，在一个实施方式中，本申请还提供了一种液晶显示设备的画质补偿装置，包括：
RGB值计算模块410，配置成在液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取液晶显示设备输出的图像信息中每一像素点的RGB值，并计算每一像素点的RGB值的RGB总和。
第一选取模块420，配置成从各RGB总和中选取出数值最大的RGB总和作为第一补偿评价值。
画质补偿模块430，配置成若第一补偿评价值大于或等于第一补偿阈值时，则根据第一补偿评价值、各RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
在一个实施方式中，还包括：
变化率计算模块，配置成若第一补偿评价值小于第一补偿阈值时，则计算在相邻时刻每一像素点的RGB值的变化率，得到在预设时间段内每一像素点的各变化率的变化率总和。
第二选取模块，配置成从各变化率总和中选取出数值最大的变化率总和作为第二补偿评价值。
画质补偿模块，还配置成若第二补偿评价值大于或等于第二补偿阈值时，则根据第一补偿评价值、各RGB总和、RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
在一个实施方式中，画质补偿模块，包括：
第一比值计算单元，配置成分别将每一个像素点的RGB总和与第一补偿评价值的比值作为第一RGB补偿比例。
第一RGB补偿单元，配置成将第一RGB补偿比例与RGB偏移补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。
在一个实施方式中，画质补偿模块，包括：
第二比值计算单元，配置成分别将每一像素点的RGB总和与第一补偿评价值的比值作为第一RGB补偿比例，以及分别将每一像素点的变化率总和与第一补偿评价值对应的像素点的变化率总和的比值作为第二RGB补偿比例。
第二RGB补偿单元，配置成将第一RGB补偿比例与RGB偏移补偿值的乘积、第二 RGB补偿比例与获取到的RGB变化率补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。
在一个实施方式中，还包括：
联网判断模块，配置成判断是否连接至云平台。
下载模块，配置成若连接至云平台，则向云平台发送包括液晶显示设备的网络地址的画质补偿指令，并获取云平台根据画质补偿指令得到液晶显示设备所在地区而下发的RGB偏移补偿值。
备份获取模块，配置成若没有连接至云平台，则获取预存的RGB偏移补偿值。
关于液晶显示设备的画质补偿装置的具体限定可以参见上文中对于液晶显示设备的画质补偿方法的限定，在此不再赘述。上述液晶显示设备的画质补偿装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
在一个实施方式中，本申请还提供了一种终端设备，包括存储器、液晶显示器、以及连接液晶显示器的处理器，存储器存储有计算机程序，处理器执行计算机程序时实现液晶显示设备的画质补偿的方法步骤。
在一个实施方式中，终端设备包括电视机等。
本实施例提供了一种终端设备，其内部结构图可以如图5所示。该终端设备包括通过系统总线连接的处理器、存储器、网络接口、液晶显示器和输入装置。其中，该终端设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统和计算机程序。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该终端设备的网络接口用于与外部的终端通过网络连接通信。该计算机程序被处理器执行时以实现一种液晶显示设备的画质补偿方法。该终端设备的输入装置可以是液晶显示器上覆盖的触摸层，也可以是终端设备外壳上设置的按键、轨迹球或触控板，还可以是外接的键盘、触控板或鼠标等。
在本实施例中，应该理解到，所揭露的装置和方法，也可以通过其它的方式实现。以上所描述的装置实施方式仅仅是示意性的，例如，附图中的流程图和结构图显示了根据本申请的多个实施方式的装置、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意，在作为替换的实现方式中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反 的顺序执行，这依所涉及的功能而定。也要注意的是，结构图和/或流程图中的每个方框、以及结构图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。
另外，在本申请各个实施方式中的各功能模块或单元可以集成在一起形成一个独立的部分，也可以是各个模块单独存在，也可以两个或更多个模块集成形成一个独立的部分。
所述功能如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是智能手机、个人计算机、服务器、或者网络设备等)执行本实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。
工业实用性
本申请实施例提供的一种液晶显示设备的画质补偿方法、装置以及终端设备，当液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取每一像素点的RGB值，并计算每一像素点的RGB值的RGB值总和。并从中将数值最大的RGB总和作为第一补偿评价值，若第一补偿评价值大于或等于第一补偿阈值时，则对每一像素点的RGB值进行补偿。通过采集像素点在预设时间段内的RGB总和的最大值来判断显示画质是否不佳，从而根据第一补偿评价值、各RGB总和、RGB偏移补偿值开始进行画质补偿。其判断较为准确，有助于在液晶显示设备使用一定时长之后及时进行画质修补补偿，算法简单易实现，在防止程序冗余的同时执行效率较高。进一步地，能够根据液晶显示设备的使用时长提供画质补偿，可弥补长时间使用带来的性能变化导致显示效果下降的情况。

Claims (15)

  1. 一种液晶显示设备的画质补偿方法，其特征在于，包括：
    在液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取所述液晶显示设备输出的图像信息中每一像素点的RGB值，并计算每一像素点的RGB值的RGB总和；
    从各所述RGB总和中选取出数值最大的RGB总和作为第一补偿评价值；
    若所述第一补偿评价值大于或等于第一补偿阈值时，则根据所述第一补偿评价值、各所述RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
  2. 根据权利要求1所述的液晶显示设备的画质补偿方法，其特征在于，还包括：
    若所述第一补偿评价值小于所述第一补偿阈值时，则计算在相邻时刻每一像素点的RGB值的变化率，得到在所述预设时间段内每一像素点的各变化率的变化率总和；
    从各所述变化率总和中选取出数值最大的变化率总和作为第二补偿评价值；
    若所述第二补偿评价值大于或等于第二补偿阈值时，则根据所述第一补偿评价值、各所述RGB总和、所述RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
  3. 根据权利要求1或2所述的液晶显示设备的画质补偿方法，其特征在于，根据所述第一补偿评价值、各所述RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿，包括：
    分别将每一个像素点的RGB总和与所述第一补偿评价值的比值作为第一RGB补偿比例；
    将所述第一RGB补偿比例与所述RGB偏移补偿值的乘积，与对应的像素点的RGB值相加以补偿该像素点的RGB值。
  4. 根据权利要求1或2所述的液晶显示设备的画质补偿方法，其特征在于，根据所述第一补偿评价值、各所述RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿，包括：
    分别将每一像素点的RGB总和与所述第一补偿评价值的比值作为第一RGB补偿比例，以及分别将每一像素点的变化率总和与所述第一补偿评价值对应的像素点的变化率总和的比值作为第二RGB补偿比例；
    将所述第一RGB补偿比例与所述RGB偏移补偿值的乘积、所述第二RGB补偿比例与获取到的RGB变化率补偿值的乘积，与对应的像素点的RGB值相加以补偿该像 素点的RGB值。
  5. 根据权利要求4所述的液晶显示设备的画质补偿方法，其特征在于，所述RGB变化率补偿值是本地预存的，或者，从云平台获取的；
    其中，本地预存的所述RGB变化率补偿值是根据终端设备的液晶显示设备的特性参数确定的；从云平台获取的所述RGB变化率补偿值，是所述云平台根据液晶显示设备的所在地区、所在地区的气候对液晶显示设备性能的影响、以及液晶显示设备的特性对应下发的。
  6. 根据权利要求1所述的液晶显示设备的画质补偿方法，其特征在于，若所述第一补偿评价值大于或等于第一补偿阈值，之后还包括：
    判断是否连接至云平台；
    若连接至所述云平台，则向所述云平台发送包括所述液晶显示设备的网络地址的画质补偿指令，并获取所述云平台根据所述画质补偿指令得到所述液晶显示设备所在地区的RGB偏移补偿值；
    若没有连接至所述云平台，则获取预存的所述RGB偏移补偿值。
  7. 根据权利要求2-4任一项所述的液晶显示设备的画质补偿方法，其特征在于，所述第一补偿评价值，用于表示所述第一补偿评价值对应的像素点的液晶分子在所述预设时间段内偏移的量的大小；
    所述第二补偿评价值，用于表示所述第二补偿评价值对应的像素点的液晶分子在所述预设时间段内偏移的波动大小。
  8. 根据权利要求7所述的液晶显示设备的画质补偿方法，其特征在于，所述第二补偿评价值相对越小，说明所述第二补偿评价值对应的像素点的液晶分子的偏移量相对越小；所述第二补偿评价值相对越大，说明所述第二补偿评价值对应的像素点的液晶分子的偏移量相对越大。
  9. 根据权利要求2-4任一项所述的液晶显示设备的画质补偿方法，其特征在于，所述第二补偿阈值是根据液晶显示设备参数特性确定的。
  10. 根据权利要求1-9任一项所述的液晶显示设备的画质补偿方法，其特征在于，所述RGB总和作为所述液晶显示设备中评价液晶分子极化程度的数值，所述RGB总和越大则说明对应像素点的液晶分子偏移量越大；
    当液晶分子出现趋于极化的现象时，在某些方向的偏移量会比预期大，在对应像素点的RGB值也随之变大。
  11. 根据权利要求1-9任一项所述的液晶显示设备的画质补偿方法，其特征在于，所述第一补偿阈值是根据液晶显示设备参数特性确定的；
    所述RGB偏移补偿值是本地预存的，或者，从云平台获取的；
    其中，本地预存的所述RGB偏移补偿值是根据液晶显示设备的特性参数确定的；从云平台获取的所述RGB偏移补偿值，是所述云平台根据液晶显示设备的所在地区、所在地区的气候对液晶显示设备显示性能的影响、以及液晶显示设备的特性对应下发的。
  12. 一种液晶显示设备的画质补偿装置，其特征在于，包括：
    RGB值计算模块，配置成在液晶显示设备的屏幕显示时长大于或等于预设时长时，则在预设时间段内按照预定时间间隔获取所述液晶显示设备输出的图像信息中每一像素点的RGB值，并计算每一像素点的RGB值的RGB总和；
    第一选取模块，配置成从各所述RGB总和中选取出数值最大的RGB总和作为第一补偿评价值；
    画质补偿模块，配置成若所述第一补偿评价值大于或等于第一补偿阈值时，则根据所述第一补偿评价值、各所述RGB总和、获取到的RGB偏移补偿值、以及每一像素点的RGB值，对每一像素点的RGB值进行补偿。
  13. 一种终端设备，其特征在于，包括存储器、液晶显示器、以及连接所述液晶显示器的处理器，所述存储器存储有计算机程序，所述处理器执行所述计算机程序时实现权利要求1至11中任一项所述方法的步骤。
  14. 根据权利要求13所述的终端设备，其特征在于，所述终端设备包括电视机。
  15. 一种计算机可读存储介质，其特征在于，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至11中任一项所述的方法的步骤。
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