WO2018227869A1 - Procédé de réglage d'image d'écran d'affichage, terminal d'affichage et support d'informations lisible - Google Patents

Procédé de réglage d'image d'écran d'affichage, terminal d'affichage et support d'informations lisible Download PDF

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Publication number
WO2018227869A1
WO2018227869A1 PCT/CN2017/110658 CN2017110658W WO2018227869A1 WO 2018227869 A1 WO2018227869 A1 WO 2018227869A1 CN 2017110658 W CN2017110658 W CN 2017110658W WO 2018227869 A1 WO2018227869 A1 WO 2018227869A1
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Prior art keywords
display
displayed
screen
information
picture
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PCT/CN2017/110658
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English (en)
Chinese (zh)
Inventor
谢仁礼
陈奕鑫
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深圳Tcl新技术有限公司
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Publication of WO2018227869A1 publication Critical patent/WO2018227869A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—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

Definitions

  • the present invention relates to the field of display screens, and more particularly to a display screen adjustment method, a display terminal, and a readable storage medium.
  • Partial backlight control technology (Local Dimming) is the most common and effective solution. With this technology, you can change the backlight control of the TV according to the display content, reduce the corresponding backlight in the dark area, and increase the corresponding backlight in the bright area. The blacker, brighter, brighter, higher-contrast effect also greatly improves the light leakage of the TV.
  • this solution has a big drawback, that is, the cost will increase dramatically, and at the same time, to achieve good results, the backlight design must be straight-down design. If the side-in backlight design is adopted, the light leakage problem can not be improved.
  • the main object of the present invention is to provide a display screen adjustment method, a display terminal, and a readable storage medium, which are intended to reduce the light leakage of the display screen at a low cost.
  • the present invention provides a display screen adjustment method, and the display screen adjustment method includes the following steps:
  • the screen to be displayed is adjusted according to the corresponding control curve and displayed on the display terminal.
  • the step of obtaining the display to be displayed on the display terminal and parsing to determine the display information of the to-be-displayed screen comprises:
  • the preset rule is to determine a mapping rule according to an association relationship between the display data and the display control parameter; the mapping rule includes: using the first algorithm/query the first mapping rule corresponding to the first table and using the second algorithm/query the second table Corresponding second mapping rule.
  • the step of obtaining the display to be displayed on the display terminal and parsing to determine the display information of the to-be-displayed image includes:
  • the picture to be displayed is parsed to obtain a gray-scale distribution histogram and encoding information of the picture to be displayed, and the gray-scale distribution histogram and the encoded information are used as display information of the picture to be displayed.
  • the step of determining the display data according to the display information of the screen to be displayed includes:
  • the data determined based on the grayscale histogram, the encoding information, and the hardware information of the display terminal is used as the display data of the screen to be displayed.
  • the step of processing the display data according to a preset rule to obtain the display control parameter includes:
  • the maximum display brightness, the minimum display brightness, and the maximum signal amplitude are processed according to the second mapping rule to obtain a second control parameter
  • the first control parameter and the second control parameter are used as display control parameters.
  • control function includes a backlight control function and a display control function
  • the step of acquiring the display information of the to-be-displayed screen according to the request, before the step of detecting the screen display request further includes:
  • the theoretical value of the second control parameter is taken as the second theoretical value, and the relationship between the numerical combination of the first theoretical value and the second theoretical value and the display screen is used as the display control function.
  • the step of inputting the display control parameter into the corresponding control function to obtain the corresponding control curve includes:
  • the display control parameter is input to the display control function to obtain the display control curve.
  • the step of adjusting the display to be displayed according to the corresponding control curve and displaying the method includes:
  • the screen to be displayed is adjusted and the adjusted screen is displayed on the display screen to reduce the influence of the display light leakage on the display screen.
  • the present invention further provides a display terminal, the display terminal comprising: a memory, a processor, and a display screen adjustment program stored on the memory and operable on the processor, The step of implementing the display screen adjustment method described above when the display screen adjustment program is executed by the processor.
  • the present invention further provides a readable storage medium, wherein the computer readable storage medium stores a display screen adjustment program, and the display screen adjustment program is implemented by the processor to implement the above display. The steps of the screen adjustment method.
  • the present invention provides a method for adjusting a screen of a display screen.
  • the method for adjusting a screen of a display screen includes the following steps: acquiring a screen to be displayed on the display terminal and parsing it to determine display information of the screen to be displayed; determining according to display information of the screen to be displayed The data is displayed, and the display data is processed according to a preset rule to obtain a display control parameter; the display control parameter is input into a corresponding control function to obtain a corresponding control curve; the to-be-displayed screen is adjusted according to the corresponding control curve and displayed on the display terminal.
  • the embodiment of the present invention analyzes the display screen, first determines the display information of the display screen, determines the corresponding display data according to the display information, further obtains the control parameter, and inputs the display control parameter into the corresponding algorithm to obtain the control curve, and according to the control curve Adjusting the image to be displayed, and displaying the adjusted image to be displayed on the display screen, the display screen can improve the light leakage problem when displaying the dark scene without increasing any hardware cost, and can maintain the original image quality.
  • FIG. 1 is a schematic structural diagram of a device in a hardware operating environment according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of an embodiment of a method for adjusting a screen of a display screen according to the present invention
  • FIG. 3 is a schematic flow chart of the step S10 of the method for adjusting the screen of the display screen of FIG. 2;
  • FIG. 4 is a schematic flow chart of the step S20 of the method for adjusting the screen of the display screen of FIG. 2;
  • FIG. 5 is a schematic flowchart of the refinement of step S30 of the method for adjusting the screen of the display screen of FIG. 2;
  • FIG. 6 is a schematic flow chart of data processing of a display screen adjustment method according to the present invention.
  • FIG. 7 is a screen to be displayed of a method for adjusting a screen of a display screen according to the present invention.
  • FIG. 9 is a schematic diagram of a display control curve in a method for adjusting a screen of a display screen according to the present invention.
  • FIG. 10 is a schematic diagram of a specific scene in a method for adjusting a screen of a display screen of the present invention
  • Light leakage is that the screen LCD does not closely match the frame, which causes the light of the lamp to be directly transmitted.
  • the leakage of the liquid crystal display is a common problem. In a sense, the liquid crystal display basically cannot avoid the occurrence of light leakage, but the degree of the problem.
  • the gray scale refers to an image that can be defined as one.
  • the so-called gray level is the brightness between the brightest and the darkest. Change is divided into several parts. In order to perform corresponding screen brightness control of signal input.
  • Each digital image is composed of a number of points. These points are also called pixels. Usually, each pixel can display many different colors. It is composed of three red, green and blue (RGB) children. Made up of pixels.
  • RGB red, green and blue
  • the grayscale represents the level of hierarchy of brightness from the darkest to the brightest. The more intermediate levels, the more delicate the picture will be. 8bit
  • the panel can represent the 8th power of 2, which is equal to 256 brightness levels. We call it 256 gray levels.
  • Each pixel on the LCD screen is composed of red, green and blue of different brightness levels to form different color points. That is to say, the color change of each point on the screen is actually caused by the gray scale change of the three RGB sub-pixels constituting this point.
  • the light leakage of the display screen is studied.
  • the light leakage problem of the display screen is most easily exposed in the dark scene, and the partial backlight control can change the backlight according to the display content of the television set, and the dark scene will correspondingly reduce or even turn off the corresponding backlight, in the same display.
  • the light leakage problem will decrease proportionally with the reduction of the backlight. That is to say, under other conditions, there is such a correspondence, the size of the backlight is proportional to the light leakage problem.
  • FIG. 1 is a schematic structural diagram of a display terminal in a hardware operating environment according to an embodiment of the present invention.
  • the embodiment of the present invention is applied to a corresponding display terminal with a display screen
  • the terminal with a display screen may be a PC, or may be a smart phone, a tablet computer, an e-book reader, and an MP3 (Moving).
  • the terminal may include a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002.
  • the communication bus 1002 is used to implement connection communication between these components.
  • the user interface 1003 can include a display, an input unit such as a keyboard, and the optional user interface 1003 can also include a standard wired interface, a wireless interface.
  • the network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a WI-FI interface).
  • the memory 1005 may be a high speed RAM memory or a stable memory (non-volatile) Memory), such as disk storage.
  • the memory 1005 can also optionally be a storage device independent of the aforementioned processor 1001.
  • the terminal may further include a camera, RF (Radio) Frequency, RF) circuits, sensors, audio circuits, WiFi modules, and more.
  • sensors such as light sensors, motion sensors, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display according to the brightness of the ambient light, and the proximity sensor may turn off the display and/or when the mobile terminal moves to the ear. Backlighting.
  • the gravity acceleration sensor can detect the magnitude of acceleration in each direction (usually three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile terminal (such as horizontal and vertical screen switching, Related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; of course, the mobile terminal can also be equipped with other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. No longer.
  • terminal structure shown in FIG. 1 does not constitute a limitation to the terminal, and may include more or less components than those illustrated, or a combination of certain components, or different component arrangements.
  • a memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a display screen adjustment program.
  • the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server;
  • the user interface 1003 is mainly used to connect the client (user end), and perform data communication with the client;
  • the processor 1001 can be used to call the display screen adjustment program stored in the memory 1005 and perform the following operations:
  • the display screen adjustment method includes the following steps:
  • the screen to be displayed is adjusted according to the corresponding control curve and displayed on the display terminal.
  • processor 1001 can call the display screen adjustment program stored in the memory 1005, and further perform the following operations:
  • the step of obtaining the display to be displayed on the display terminal and parsing to determine the display information of the screen to be displayed includes:
  • the preset rule is to determine a mapping rule according to an association relationship between the display data and the display control parameter; the mapping rule includes: using the first algorithm/query the first mapping rule corresponding to the first table and using the second algorithm/query the second table Corresponding second mapping rule.
  • processor 1001 can call the display screen adjustment program stored in the memory 1005, and further perform the following operations:
  • the step of obtaining the display to be displayed on the display terminal and parsing to determine the display information of the screen to be displayed includes:
  • the picture to be displayed is parsed to obtain a gray-scale distribution histogram and encoding information of the picture to be displayed, and the gray-scale distribution histogram and the encoded information are used as display information of the picture to be displayed.
  • processor 1001 can call the display screen adjustment program stored in the memory 1005, and further perform the following operations:
  • the step of determining display data according to display information of a screen to be displayed includes:
  • the data determined based on the grayscale histogram, the encoding information, and the hardware information of the display terminal is used as the display data of the screen to be displayed.
  • processor 1001 can call the display screen adjustment program stored in the memory 1005, and further perform the following operations:
  • step of processing the display data according to a preset rule to obtain the display control parameter comprises:
  • the maximum display brightness, the minimum display brightness, and the maximum signal amplitude are processed according to the second mapping rule to obtain a second control parameter
  • the first control parameter and the second control parameter are used as display control parameters.
  • processor 1001 can call the display screen adjustment program stored in the memory 1005, and further perform the following operations:
  • the control function includes a backlight control function and a display control function
  • the step of acquiring the display information of the to-be-displayed screen according to the request, before the step of detecting the screen display request further includes:
  • the theoretical value of the second control parameter is taken as the second theoretical value, and the relationship between the numerical combination of the first theoretical value and the second theoretical value and the display screen is used as the display control function.
  • processor 1001 can call the display screen adjustment program stored in the memory 1005, and further perform the following operations:
  • the step of inputting the display control parameter into the corresponding control function to obtain the corresponding control curve includes:
  • the display control parameter is input to the display control function to obtain the display control curve.
  • processor 1001 can call the display screen adjustment program stored in the memory 1005, and further perform the following operations:
  • the step of adjusting the display to be displayed according to the corresponding control curve and displaying the method includes:
  • the screen to be displayed is adjusted and the adjusted screen is displayed on the display screen to reduce the influence of the display light leakage on the display screen.
  • an embodiment of the present invention provides a method for adjusting a screen of a display screen, where the screen image adjustment method includes:
  • Step S10 Acquire a picture to be displayed on the display terminal and parse it to determine display information of the picture to be displayed.
  • the display terminal determines the screen information played on the display screen, and further obtains the screen information displayed on the display screen at the next moment, and uses the screen information to be played at the next moment as the to-be-displayed screen (to be displayed: may be a movie, a video, etc.) a frame of picture, may also be picture information, ppt page, etc.; parsing the to-be-displayed picture on the display terminal, further determining the display information of the picture to be displayed (display information of the picture to be displayed: mainly corresponding to the gray level information of the picture to be displayed, It is also possible to include information such as hue or contrast and encoding information of the picture to be displayed).
  • the display information of the to-be-displayed screen is mainly used to adjust the light leakage of the display screen.
  • the display information is a grayscale distribution histogram corresponding to the to-be-displayed image and encoding information of the to-be-displayed screen.
  • Step S20 Determine display data according to display information of the screen to be displayed, and process the display data according to a preset rule to obtain display control parameters.
  • the display information includes a grayscale distribution histogram obtained by analyzing the to-be-displayed image and the decoding information
  • the display data is data obtained according to the display information, and the display information includes other Data information
  • the core algorithm module contains preset display data processing rules, the display data can be displayed in the core algorithm module can be obtained display control parameters), corresponding Display control parameters.
  • the determined display data in the present invention may include a corresponding grayscale value, a maximum signal value, and a grayscale distribution value in the grayscale distribution histogram, and a maximum display luminance, a minimum display luminance, and a maximum signal amplitude obtained according to the decryption information.
  • Gray scale value (the gray scale value is also called APL, APL refers to a picture in which more than 95% of the signals are within a certain gray scale range, then the gray scale value is called the APL of the picture to be displayed. value).
  • FIG. 7 FIG.
  • FIG. 7 is taken as a to-be-displayed picture, and a gray-scale distribution histogram of the to-be-displayed picture is correspondingly obtained, and a histogram of the gray-scale distribution of the to-be-displayed picture shown in FIG. 7 is as shown in FIG. 8 .
  • the gray histogram shown in FIG. 8 95% of the signals in the picture to be displayed are in the order of 128 steps. Therefore, the APL_1 value corresponding to the picture is 128; further, the gray histogram correspondingly determines Maximum signal value and grayscale distribution value.
  • the display data is processed according to a preset rule, and the APL value is input, and the query table APL_LUT built in the core algorithm module is queried (the query table can be optimized in the image quality debugging process), and a backlight control parameter APL_c is obtained, which is convenient for description.
  • the parameter Inmax_c is added
  • the core algorithm module performs a series of filtering combination processing, and finally obtains the distribution feature and the picture type of the picture to be displayed, and obtains the control parameter HIST_c corresponding to the gray distribution value.
  • the core algorithm module will query in the built-in series backlight control query curve, and finally get 5 backlight control parameters, namely BL_1, BL_2, BL_3, BL_4, BL_5; further
  • the maximum display brightness, the minimum display brightness, and the maximum signal amplitude are processed to obtain M1, M2, M3, M4, and M5, and BL_1, BL_2, BL_3, BL_4, BL_5, M1, M2, M3, M4, and M5 are used as display control parameters.
  • step S30 the display control parameter is input to the corresponding control function to obtain a corresponding control curve.
  • control function a function corresponding to the relationship between the display screen and the control parameter value, determined by multiple experiments
  • Step S40 adjusting the to-be-displayed picture according to the corresponding control curve and displaying it on the display terminal.
  • the screen to be displayed is adjusted according to the obtained control curve, and the adjusted screen is displayed on the display screen.
  • the final screen display effect the overall brightness is the same as before, the dark part details are improved, and the light leakage problem of the dark scene is obvious. Reduced.
  • the to-be-displayed screen on the display terminal is acquired and parsed to determine display information of the to-be-displayed screen; the display data is determined according to the display information of the to-be-displayed screen, and the display data is processed according to a preset rule to obtain display control. Parameter; the control parameter is input to the corresponding control function to obtain the corresponding control curve; the screen to be displayed is adjusted according to the corresponding control curve and displayed on the display terminal.
  • the embodiment of the present invention analyzes the display screen, first determines the display information of the display screen, determines the corresponding display data according to the display information, further obtains the control parameter, and inputs the display control parameter into the corresponding algorithm to obtain the control curve, and according to the control curve Adjusting the image to be displayed, and displaying the adjusted image to be displayed on the display screen, the display screen can improve the light leakage problem when displaying the dark scene without increasing any hardware cost, and can maintain the original image quality.
  • a display screen adjustment method is provided, and the display screen adjustment method further includes:
  • the preset rule is to determine a mapping rule according to an association relationship between the display data and the display control parameter; the mapping rule includes: using the first algorithm/query the first mapping rule corresponding to the first table and using the second algorithm/query the second table Corresponding second mapping rule.
  • the display data when determining the display data of the screen to be displayed, the display data cannot be directly used as an argument, and the display data is directly input into the control function to obtain a control curve, so that the display data needs to be adjusted to the control parameter, in the present invention.
  • the query table After inputting the display data into the core algorithm module, the query table obtains some control parameters, and some control parameters are calculated to obtain all control control parameters, that is, in the present invention, the display data needs to be saved in the core algorithm module.
  • a table of control parameters (table: obtained by adjusting a plurality of tests, saved in a memory, the invention is not disclosed), the table is obtained according to an association relationship mapping rule between display data and display control parameters, and the mapping is performed Rules are used as preset rules.
  • mapping rule for data processing in this embodiment includes using the first algorithm/query first mapping rule corresponding to the first table and using the second algorithm/query second mapping rule corresponding to the second table.
  • the preset rule is to determine a mapping rule according to the association relationship between the display data and the display control parameter; the mapping rule includes: using the first algorithm/query the first mapping rule corresponding to the first table and using the second algorithm/query The second mapping rule corresponding to the second table.
  • step S10 includes:
  • Step S11 when detecting the display of the picture signal on the display terminal, determining the signal source of the displayed picture signal, and acquiring the picture to be displayed from the signal source.
  • the display screen signal When the display screen signal is detected on the display terminal, (detecting that the display screen signal on the display terminal may be an operation of detecting a user-triggered play video, switching a display screen, etc. on the display terminal, and displaying the screen on the display screen according to a user operation Screen), determining a signal source of the displayed picture signal, and obtaining, from the signal source, a to-be-displayed picture (every frame of the video information, or other display information) played by the display terminal at the next moment.
  • detecting that the display screen signal on the display terminal may be an operation of detecting a user-triggered play video, switching a display screen, etc. on the display terminal, and displaying the screen on the display screen according to a user operation Screen
  • Step S12 Parsing the to-be-displayed picture to obtain a gray-scale distribution histogram and encoding information of the to-be-displayed picture, and using the gray-scale distribution histogram and the encoding information as display information of the to-be-displayed picture.
  • the picture to be displayed is analyzed to obtain a histogram of the gray distribution of the picture to be displayed (the histogram of the gray distribution of the picture to be displayed: the pixel corresponding to the picture of the picture to be displayed can be obtained, and the brightness corresponding to each sub-pixel is obtained correspondingly, That is, the gray scale corresponding to each point is obtained, and the gray scale value, the maximum signal value, and the gray scale distribution value are further determined according to the gray distribution histogram of the to-be-displayed picture, and 95% of the frame to be displayed is different (the image quality requirements are different) , or other values)
  • the above signals are all within a certain gray scale range, 1, which is regarded as APL_1 of the frame picture; 2.
  • APL_2 Calculate the expected value of the signal above APL_1 in the statistical histogram, which is calculated as APL_2;
  • the final value of APL is determined by APL_1, APL_2 and the corresponding coefficients.
  • APL ⁇ *APL_1+ ⁇ *APL_2, where ⁇ and ⁇ can be adjusted according to actual conditions to achieve the best effect).
  • the APL mentioned in this paper refers to more than 95% of the signals in a certain grayscale range in a picture.
  • the gray scale value is said to be the APL value of the picture.
  • FIG. 7 is taken as a to-be-displayed picture, and the gray-scale distribution histogram of the to-be-displayed picture is correspondingly obtained.
  • the gray-scale distribution histogram of the to-be-displayed picture shown in FIG. 7 is as shown in FIG. 8
  • FIG. 8 is shown in FIG. 8 .
  • the gray histogram shown can be obtained. 95% of the signals in the picture to be displayed are below 128 steps. Therefore, the APL_1 value corresponding to the picture is 128; further, the maximum signal value is determined according to the gray histogram correspondence. And grayscale distribution values.
  • the histogram shows how to define the corresponding APL value. In the actual running process, these are all obtained by the signal analysis module through internal analysis.
  • the histogram of the analysis module has 16 levels, each level contains 16 Gray scale, level 1 (step1) contains 0 to 15 gray scale signal proportion, and so on, level 16 (step 16) contains 240 to 255 gray scale signal proportion. Therefore, as long as the following conditions are met:
  • the corresponding APL_1 value n can be calculated.
  • the gray level of the maximum signal of the whole picture should be in the 16th level histogram, and the search range is reduced to 16 gray levels, and the gray level of the largest signal is retrieved one by one.
  • the maximum display brightness, the minimum display brightness and the maximum signal amplitude are determined according to the encoding information and the hardware information of the display terminal, that is, after the chip source signal is input to the television, the television software can obtain the input signal after serial codec processing.
  • these information mainly include: maximum display brightness (Master Display Max Luminance), Master Display Min Luminance, Maximum Signal Amplitude (Content Light Lv); and data determined based on the grayscale distribution histogram and the encoding information and the hardware information of the display terminal as the display data of the screen to be displayed.
  • the to-be-displayed image is acquired according to the request, and the to-be-displayed screen is analyzed to obtain a gray-scale distribution histogram and encoding information of the to-be-displayed image, and the grayscale distribution histogram is obtained. And encoding information as display information of the screen to be displayed.
  • the display data of the to-be-displayed picture is determined to be further used for the display screen adjustment, and the acquisition process of the display data is clearly explained, so as to accurately adjust the display data to achieve the purpose of reducing the display screen.
  • step S20 includes:
  • Step S21 the grayscale value, the maximum signal value, and the grayscale distribution value are processed according to the first mapping rule to obtain the first control parameter.
  • the grayscale value, the maximum signal value, and the grayscale distribution value are according to the first mapping rule (in the present embodiment, the first mapping rule refers to: querying the query table Inmax_LUT built in the core algorithm module, and the obtained data is according to the first operation.
  • the first mapping rule refers to: querying the query table Inmax_LUT built in the core algorithm module, and the obtained data is according to the first operation.
  • the data processing flow of the rule calculation that is, according to the input display data information, after entering the core algorithm module, an information conversion process is first performed, and the detailed steps of the conversion are as follows: according to the currently input (grayscale value) APL value, By querying the core algorithm module built-in query table APL_LUT (query table APL_LUT: the query table can be optimized in the image quality debugging process, saved from multiple experiments to the default storage space, the table is not made public here), get a The new parameter APL_c, for convenience of description, adds the suffix "_c" on the original basis, and so on.
  • a new parameter Inmax_c is obtained by querying the query table Inmax_LUT built in the core algorithm module.
  • the core algorithm module performs a series of filtering combination processing, and finally obtains the distribution characteristics and picture types of the current frame picture, and defines such information as HIST_c.
  • APL_c, Inmax_c and HIST_c the core algorithm module will query in the built-in series of backlight control query curves, and finally get 5 backlight control parameters, which are BL_1, BL_2, BL_3, BL_4, BL_5. Five control parameters are taken as the first control parameter.
  • step S22 the maximum display brightness, the minimum display brightness, and the maximum signal amplitude are processed according to the second mapping rule to obtain a second control parameter.
  • the maximum display brightness, the minimum display brightness, and the maximum signal amplitude are according to the second mapping rule (in the present embodiment, the second mapping rule refers to: querying the query table MDMAX_LUT built in the core algorithm module, and the obtained data is according to the second algorithm.
  • the calculated data processing flow ie, transforming the encoded information (Metadata)
  • corresponding control parameters are obtained.
  • the detailed steps are as follows: According to the maximum display brightness input, the query operation is performed in the corresponding query table MDMAX_LUT, and the return value is used as the control parameter M1.
  • the query operation is performed in the corresponding lookup table MDMIN_LUT according to the input minimum display brightness, and the return value is used as the control parameter M2.
  • the query operation is performed in the corresponding lookup table CLL_LUT, and the return value is used as the control parameter M3.
  • the parameter M1/M2/M3 obtained by the above query operation is queried in the query table MD_LUT to obtain return values M4 and M5.
  • M1, M2, M3, M4, and M5 are taken as the second control parameters.
  • step S23 the first control parameter and the second control parameter are used as display control parameters.
  • mapping relationship calculation or query preset table
  • the grayscale value, the maximum signal value, and the grayscale distribution value are processed according to the first mapping rule to obtain a first control parameter; and the maximum display luminance, the minimum display luminance, and the maximum signal amplitude are processed according to the second mapping rule.
  • Two control parameters; the first control parameter and the second control parameter are used as display control parameters.
  • the step of acquiring the display information of the to-be-displayed screen according to the request, before the step of detecting the screen display request further includes:
  • backlight control function backlight for controlling display display, obtained by multiple experiments, Save to the memory of the terminal, do not make it public here
  • the association between the numerical value of the first theoretical value and the second theoretical value and the display of the display screen is used as a display control function (display control function: a screen for controlling display display)
  • Information processing obtained by multiple experiments, is saved in the memory of the terminal, and is not disclosed herein.
  • the theoretical value A of the first control parameter includes a1, a2, a3, and the theoretical value B of the second control parameter includes b1.
  • b2 and b3 may form a combination of (a1, b1) (a2, b1) (a3, b1) and the like, and form a display control function corresponding to the combination of the display screen and the display screen.
  • Step S30 includes:
  • Step S31 input the first control parameter into the backlight control function to obtain a backlight control curve.
  • the parameters BL_1, BL_2, BL_3, BL_4, and BL_5 obtained in the above steps are corresponding to the pre-stored backlight control curve to control the curve with the backlight, and finally determine the backlight control coefficient of the picture to be displayed.
  • step S32 the display control parameter is input to the display control function to obtain a display control curve.
  • the display control parameter input display control function that is, the parameters BL_1, BL_2, BL_3, BL_4, BL_5, M1, M2, M3, M4, M5 obtained according to the above steps are performed in the query table MAP_LUT to obtain a curve function expression.
  • Formula f (BL_1, BL_2, BL_3, BL_4, BL_5, M1, M2, M3, M4, M5, input).
  • This function is the final display control curve (also called: Mapping control curve)
  • the first control parameter is input into the backlight control function to obtain a backlight control curve;
  • the display control parameter is input to the display control function to obtain a display control curve.
  • the processed data finally obtains the control reference of the picture to be displayed, and the adjustment of the picture to be displayed is more accurate.
  • the display screen adjustment method further includes:
  • the screen to be displayed is adjusted and the adjusted screen is displayed on the display screen to reduce the influence of the display light leakage on the display screen.
  • Corresponding information of the picture to be displayed is obtained according to the backlight control coefficient, and under the joint action of the signal display control curve (Mapping control curve) and the backlight control coefficient, the final picture display effect, the overall brightness is the same as the original, and the dark part details are improved. At the same time, the light leakage problem of the dark scene will be significantly reduced according to the curve shown in FIG. 9, and FIG. 10 is a comparison picture before and after the picture adjustment to be displayed.
  • the screen to be displayed is adjusted and the adjusted screen is displayed on the display screen to reduce the influence of the display light leakage on the display screen.
  • the invention improves the light leakage problem of the display screen when displaying dark scenes without adding any hardware cost, and can maintain or even enhance the original image quality performance.
  • the invention also provides a display terminal.
  • the display terminal includes: a memory, a processor, and a display screen adjustment program stored on the memory and operable on the processor, wherein the display screen adjustment program is implemented by the processor to implement the above The steps of the display screen adjustment method.
  • the present invention also provides a readable storage medium.
  • the computer readable storage medium stores a display screen adjustment program, and the display screen adjustment program is implemented by the processor to implement the steps of the display screen adjustment method.
  • portions of the technical solution of the present invention that contribute substantially or to the prior art may be embodied in the form of a software product stored in a storage medium (such as a ROM/RAM as described above). , a disk, an optical disk, including a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a terminal device which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

L'invention concerne un procédé de réglage d'image d'écran d'affichage, un terminal d'affichage et un support d'informations lisible. Le procédé de réglage d'image d'écran d'affichage et un programme de réglage d'image d'écran d'affichage exécutés par un processeur comprennent tous les deux les étapes suivantes consistant : à obtenir une image à afficher sur un terminal d'affichage et à analyser cette dernière pour déterminer des informations d'affichage de l'image à afficher (S10) ; à déterminer des données d'affichage selon les informations d'affichage de l'image à afficher, à traiter les données d'affichage selon une règle prédéfinie pour obtenir des paramètres de commande d'affichage (S20) ; à entrer les paramètres de commande d'affichage dans des fonctions de commande correspondantes pour obtenir des courbes de commande correspondantes (S30) ; à régler l'image à afficher en fonction des courbes de commande correspondantes, puis à afficher cette dernière sur le terminal d'affichage (S40). La présente invention atténue le problème de fuite de lumière d'un écran d'affichage sans augmenter les coûts matériels, et maintient également une norme de qualité d'image de l'écran d'affichage.
PCT/CN2017/110658 2017-06-12 2017-11-13 Procédé de réglage d'image d'écran d'affichage, terminal d'affichage et support d'informations lisible WO2018227869A1 (fr)

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