WO2021197213A1 - 显示器调色方法及装置、电子设备、存储介质 - Google Patents
显示器调色方法及装置、电子设备、存储介质 Download PDFInfo
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
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- G—PHYSICS
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- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
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- G09G2320/00—Control of display operating conditions
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Definitions
- the present disclosure relates to the field of data processing technology, and in particular to a color toning method of a display, a display device, electronic equipment, and a non-transitory computer-readable storage medium.
- Ultra-high-resolution monitors have been pursuing high-quality display effects, and more and more monitors have begun to develop their own 3D LUT (display look-up table) for color adjustment.
- 3D LUT display look-up table
- Existing high-resolution professional monitors mostly use 3D LUT technology for image quality adjustment to map each point of the image. This takes up a lot of resources on the hardware and the cost is also very high.
- a method for color adjustment of a display includes: obtaining original RGB data of pixels of a screen; calling a display lookup table to determine whether there is RGB mapping data corresponding to the original RGB data in the display lookup table; if If there is RGB mapping data corresponding to the original RGB data in the display look-up table, the RGB mapping data corresponding to the original RGB data is used for screen toning; if the display look-up table does not exist and the original RGB mapping data For the RGB mapping data corresponding to the RGB data, the original RGB data, the multiple sets of selected RGB data, and the RGB mapping data corresponding to each set of selected RGB data are used to calculate the original RGB data in combination with a predetermined interpolation algorithm Corresponding RGB mapping data, and use the calculated RGB mapping data for screen toning.
- the display look-up table includes multiple sets of selected RGB data and RGB mapping data corresponding to each set of selected RGB data; the selected RGB data is within the value range of the original RGB data corresponding to the display, according to a preset method Selected part of RGB data.
- the color toning method further includes: determining the value range N corresponding to the R value, G value, and B value contained in the original RGB data according to the data size of the signal source of the display; Value interval, take M R values from the R value range N as the selected R value, according to the second value interval, take O G values from the G value range N as the selected G value, According to the third value interval, take out P B values from the value range N of B values as the selected B value; obtain the M ⁇ O ⁇ P group of selected RGB data; calculate the RGB mapping data of each group of selected RGB data ; According to the M ⁇ O ⁇ P group of selected RGB data and the RGB mapping data corresponding to each group of selected RGB data, the display look-up table is established.
- the size of the first value interval is 2 to the a power
- the size of the second value interval is 2 to the b power
- the size of the third value interval is 2 c power; where a, b, and c are all positive integers, and the first value interval, the second value interval, and the third value interval are all smaller than the value range N.
- the values of the first value interval, the second value interval, and the third value interval are equal.
- the RGB mapping data includes: according to the original RGB data and the multiple sets of selected RGB data, it is determined that the R value in the original RGB data is in the range of M selected R values, and the G value is in 0
- the segment in the selected G value and the segment in which the B value is in the P selected B values; according to the smaller of the segments in which the R value, G value, and B value in the original RGB data are located Determine the first target RGB data; determine the second target RGB data according to the larger endpoint of the section in which the R value, G value, and B value in the original RGB data are located, and combine the original RGB data, RGB mapping data of the first target RGB data, and RGB mapping data of the second target RGB data, using the predetermined interpolation algorithm to calculate the RGB mapping data corresponding to the original RGB data.
- the predetermined interpolation algorithm is a linear difference algorithm.
- the calculation of the RGB mapping data of each set of selected RGB data includes: for each set of selected RGB data, combined with a first conversion formula to calculate the corresponding tristimulus value; and according to the calculated tristimulus Value, combined with the second conversion formula, to obtain the RGB mapping data corresponding to each group of selected RGB data.
- the first conversion formula is: the tristimulus value is equal to the first conversion matrix multiplied by RGB data; the second conversion formula is: the tristimulus value is equal to the second conversion matrix multiplied by the RGB mapping data.
- the calculation method of the first conversion matrix includes: obtaining the color coordinates of the three primary colors of red, green and blue specified in a preselected color space standard; The color coordinates of white; according to the color coordinates of the three primary colors of red, green and blue and the color coordinates of the white, combined with a first conversion formula, a first conversion matrix is calculated.
- the calculation method of the second conversion matrix includes: detecting the color coordinates of red, green, blue and white when each set of selected RGB data is used to light up the screen of the display; and for each set of selected RGB data , According to the corresponding measured red, green, blue and white color coordinates, combined with the second conversion formula, the corresponding second conversion matrix is calculated.
- the toning method further includes: outputting the toned picture from the display.
- a color toning device for a display which includes an input component, a memory, and a processor.
- the input component is configured to receive the original RGB data of the pixels of the screen.
- the memory stores a display lookup table.
- the processor is configured to call a display look-up table to determine whether there is RGB mapping data corresponding to the original RGB data in the display look-up table; there is RGB corresponding to the original RGB data in the display look-up table In the case of mapping data, use the RGB mapping data corresponding to the original RGB data for screen toning; when the display look-up table does not have the RGB mapping data corresponding to the original RGB data, use the The original RGB data, the multiple sets of selected RGB data, and the RGB mapping data corresponding to each set of selected RGB data are combined with a predetermined interpolation algorithm to calculate the RGB mapping data corresponding to the original RGB data, and use the calculated RGB Map data for screen toning.
- the display look-up table includes multiple sets of selected RGB data and RGB mapping data corresponding to each set of selected RGB data; the selected RGB data is within the value range of the original RGB data corresponding to the display, according to a preset method The selected part of the original RGB data.
- the processor is further configured to determine the value range N corresponding to the R value, G value, and B value contained in the original RGB data according to the data size of the signal source of the display; Value interval, take out M R values from the R value range N as the selected R value, according to the second value interval, take out O G values from the G value range N as the selected G value ,According to the third value interval, take out P B values from the value range N of B values as the selected B value; get the M ⁇ O ⁇ P group of selected RGB data; calculate the RGB mapping of each group of selected RGB data Data; According to the M ⁇ O ⁇ P group selected RGB data and its corresponding RGB mapping data, the display look-up table is established.
- the processor is configured to determine, based on the original RGB data and the multiple sets of selected RGB data, that the R value in the original RGB data is in the region of the M selected R values. Segment, G value in the 0 selected G value segment, and B value in the P selected B value segment; according to the R value, G value, and B value in the original RGB data.
- Two target RGB data combining the original RGB data, the RGB mapping data of the first target RGB data, and the RGB mapping data of the second target RGB data, using the predetermined interpolation algorithm to calculate the RGB mapping data corresponding to the original RGB data.
- the processor is further configured to: obtain the color coordinates of the three primary colors of red, green and blue specified in the preselected color space standard; obtain the white color of the display when the screen is lit white Coordinates; according to the color coordinates of the three primary colors of red, green and blue and the color coordinates of the white color, the first conversion matrix is calculated.
- the first conversion formula is: the tristimulus value is equal to the first conversion matrix multiplied by RGB data.
- the processor is further configured to: use each group of selected RGB data in the M ⁇ O ⁇ P group of selected RGB data to light up the display; Determine the color coordinates of red, green, blue and white when the RGB data lights up the screen; for each group of selected RGB data, calculate the corresponding second conversion matrix according to the corresponding measured color coordinates of red, green, blue and white.
- the second conversion formula is: the tristimulus value is equal to the second conversion matrix multiplied by the RGB mapping data.
- the toning device further includes an output component configured to output the toned screen from the display.
- an electronic device including a memory, a processor, and a computer program stored in the memory and capable of running on the processor.
- the processor executes the program described in any of the above embodiments.
- a non-transitory computer-readable storage medium stores computer instructions configured to perform the adjustment of the display described in any of the above embodiments. One or more steps in the color method.
- Figure 1 is a flowchart of a color toning method according to some embodiments
- RGB mapping data corresponding to selected RGB data according to some embodiments
- 3A is a flowchart of calculating RGB mapping data corresponding to original RGB data by using a predetermined interpolation algorithm according to some embodiments
- Fig. 3B is a schematic diagram of a linear interpolation algorithm according to some embodiments.
- Figure 4 is a flowchart of establishing a display lookup table according to some embodiments.
- FIG. 5 is a flowchart of calculating a first conversion formula according to some embodiments.
- Fig. 6 is a flowchart of calculating a second conversion formula according to some embodiments.
- Figure 7 is a structural diagram of a toning device according to some embodiments.
- Fig. 8 is a hardware structure diagram of an electronic device according to some embodiments.
- first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, “plurality” means two or more.
- Some embodiments of the present disclosure provide a color toning method of a display, referring to FIG. 1, including:
- the original RGB data is determined according to the information contained in the input signal. For each pixel of the display screen, the input signal has corresponding information of the original RGB data.
- S104 Invoke a display look-up table, and determine whether there is RGB mapping data corresponding to the original RGB data in the display look-up table.
- the look-up table (Look-Up-Table, abbreviated as LUT) is essentially a RAM. After it writes data into RAM in advance, every time a signal is input (for example, original RGB data), it is equivalent to inputting an address to look up the table, find out the content corresponding to the address (for example, RGB mapping data), and then output it.
- LUT Look-Up-Table
- the display look-up table includes multiple sets of selected RGB data and RGB mapping data corresponding to each set of selected RGB data; the selected RGB data is selected according to a preset method within the value range of the original RGB data corresponding to the display Part of RGB data. In this way, there is no need to store the RGB mapping data corresponding to all the original RGB data in the display look-up table, thereby saving storage resources.
- Displaying that the RGB mapping data corresponding to the original RGB data exists in the look-up table means that the selected RGB data that is the same as the original RGB data exists in the display look-up table, and the RGB mapping data corresponding to the selected RGB data exists .
- the original RGB data is toned by using the RGB mapping data corresponding to the selected RGB data.
- the predetermined interpolation algorithm may be a linear interpolation algorithm, so that the result obtained by the interpolation can be formed into a relatively uniform distribution, thereby making the color palette more uniform and smooth.
- the original RGB data, multiple sets of selected RGB data, and the RGB mapping data corresponding to each set of selected RGB data are used in combination with a predetermined interpolation algorithm to calculate the RGB mapping data corresponding to the original RGB data.
- S202 According to the original RGB data and multiple sets of selected RGB data, determine the section in which the R value in the original RGB data is in the M selected R values, the section in which the G value is in the O selected G values, and B The value is in the range of P selected B values.
- the display look-up table provided by the embodiment of the present disclosure, only part of the RGB data is selected as the selected RGB data from the value range of the original RGB data, and the RGB mapping data of each selected RGB data is calculated and stored. If there is no selected RGB data that is the same as the original RGB data in the display lookup table, that is, there is no RGB mapping data corresponding to the original RGB data in the display lookup table; a predetermined interpolation algorithm needs to be used to calculate the corresponding RGB mapping data.
- the value range N corresponding to the R value, G value, and B value contained in the original RGB data is determined according to the data size of the signal source of the display.
- the value ranges corresponding to the R value, G value, and B value contained in the original RGB data are all 0-255, that is, N is 0-255.
- the first value interval take out M R values from the value range N of R values as the selected R value; according to the second value interval, take out O G values from the value range N of G values as the selected value Set the G value; according to the third value interval, take out P B values from the B value range N as the selected B value. Combine M selected R values, O selected G values, and P selected B values to obtain M ⁇ O ⁇ P set of selected RGB data.
- the size of the first value interval is 2 to the power of a
- the size of the second value interval is 2 to the power of b
- the size of the third value interval is 2 to the power of c; where a, b and c are all positive integers, and the first value interval, the second value interval, and the third value interval are all smaller than the value range N.
- M selected R values divide the range of R values contained in the original RGB data into equally spaced (M-1) segments
- O selected G values will be the difference between the G values contained in the original RGB data
- the value range is divided into equally spaced (0-1) segments
- the P selected B values divide the value range of the B value contained in the original RGB data into equally spaced (P-1) segments.
- Select RGB data for the M ⁇ O ⁇ P group calculate the RGB mapping data of each group of selected RGB data, and associate the selected RGB data of the M ⁇ O ⁇ P group with the RGB mapping data corresponding to each group of selected RGB data The stored in the display lookup table.
- the R value contained in the original RGB data is among the M selected R values , The section where the G value is in the 0 selected G values, and the section where the B value is in the P selected B values.
- S204 Determine the first target RGB data according to the smaller endpoint value of the segment in which the R value, G value, and B value in the original RGB data are located; according to the R value, G value, and value in the original RGB data Determine the second target RGB data, combine the original RGB data, the RGB mapping data of the first target RGB data, and the RGB mapping data of the second target RGB data, and use the predetermined
- the interpolation algorithm calculates the RGB mapping data corresponding to the original RGB data.
- the first target RGB data is determined according to the smaller end value of the segment in which the R value, the G value, and the B value in the original RGB data are located;
- the R value, G value, and B value in the data are respectively located in the larger end value of the segment, determine the second target RGB data, combine the original RGB data, the RGB mapping data of the first target RGB data, and the second RGB mapping data of the target RGB data, using a predetermined interpolation algorithm to calculate the RGB mapping data corresponding to the original RGB data; including:
- S302 Determine whether the R value, G value, and B value contained in the original RGB data have the same value corresponding to the selected R value, the selected G value, and the selected B value.
- the data size of the signal source is 8bit, and the first value interval, the second value interval, and the third value interval are all selected as 4; then, select the R value, select the G value, and select 4
- the value of the fixed B value includes 0, 4, 8, 12...124, 128, 131, 135...247, 251, 255, and 643 groups of selected RGB data can be obtained.
- the original RGB data is (1, 1, 0); then, the R value contained in the original RGB data is in the section "0-4" among the 64 selected R values, and the original RGB data contains The G value of is in the “0 ⁇ 4” section of the 64 selected G values, and the B value contained in the original RGB data is the same as a selected B value “0”; that is, the R value contained in the original RGB data , G value and B value have the same value as selected R value, selected G value and selected B value. It should be noted that, among the R value, G value, and B value contained in the original RGB data, at most two values are the same as the corresponding values in the selected R value, the selected G value, and the selected B value.
- the original RGB data is (1, 1, 1); then, the R value contained in the original RGB data is in the section "0-4" among the 64 selected R values, and the original RGB data contains The G value in the 64 selected G values is in the “0 ⁇ 4” section, and the B value contained in the original RGB data is in the “0 ⁇ 4” section of the 64 selected B values; that is, the original RGB data
- the included R value, G value, and B value do not have the same value as the selected R value, selected G value, and selected B value.
- the display look-up table contains RGB mapping data corresponding to the first target RGB data and the second target RGB data.
- the original RGB data is (1, 1, 0); where the B value "0" contained in the original RGB data is the same as a selected B value, and the B value "0" contained in the original RGB data is the first Target value; the R value "1” contained in the original RGB data is different from any selected R value, and the R value "1" contained in the original RGB data is in the area "0 ⁇ 4" among the 64 selected R values Segment, the endpoint value “0” is used as the second target value, and the endpoint value “4” is used as the third target value; in the same way, for the G value “1” contained in the original RGB data, the second target value is “0”, The third target value is "4"; the first target value and the second target value are combined to obtain the first target RGB data as (0, 0, 0), and the first target value and the third target value are combined to obtain the first target value
- the second target RGB data is (4, 4, 0).
- the original RGB data is (1, 0, 0).
- the predetermined interpolation algorithm is a linear difference algorithm; wherein the R value contained in the original RGB data is different from any selected R value; R1 is the selected R of the first target RGB data value, Rr is the second selected target values of RGB data R; R enantiomer R l is the value of the selected mapping value corresponding to a first target RGB RGB data included in map data; R enantiomer is the second target RGB data r map values corresponding to the selected R value RGB data contained in the map; R R value of the original raw RGB data is included, R enantiomer is the R values of the original map values interpolated RGB data contained; then,
- mapping values of other R values in any selected R value section can be calculated.
- the calculation method of G value and B value can be known, which will not be repeated here.
- the signal source data can be used to indicate the offset of the original RGB data in each segment (for example, 0, 1, 2, 3), that is, the position of the inter-segment value, and the high 6bit of the signal source data can be used for Indicates the location of the section (for example, paragraph 0 to paragraph 63). In this way, when inputting data, the corresponding RGB mapping data retrieval or calculation method can be used according to the content recorded in the data.
- Step 110 Output the toned picture from the display.
- the RGB mapping data Since the original RGB data has been converted into RGB mapping data, the RGB mapping data is used for color correction, and then the color-graded picture is output, which completes the color correction of the display.
- the color toning method of the display determines whether there is RGB mapping data corresponding to the original RGB data in the display look-up table; when the RGB mapping data corresponding to the original RGB data exists in the display look-up table, directly Use the RGB mapping data corresponding to the original RGB data to color the screen; if there is no RGB mapping data corresponding to the original RGB data in the display look-up table, use a predetermined interpolation algorithm to calculate the RGB mapping data of the original RGB data, and use The calculated RGB mapping data is color-graded; then the color-graded image is output. With this color correction method, less mapping data can be stored in the display look-up table, so that the display look-up table occupies less hardware resources.
- the color toning method provided by the embodiments of the present disclosure adopts a method of combining linear and non-linear, so that the finally output RGB mapping data can not only meet the requirements of the color gamut, but also match the best color requirements, and the application of the interpolation method also enables The occupancy rate of hardware resources is reduced.
- the toning method further includes:
- the signal source data of professional monitors generally adopts 8bit or 10bit, and some higher-end monitors will achieve 12bit.
- the value range N corresponding to the R value, the G value, and the B value contained in the original RGB data is 0-255.
- S404 According to the first value interval, take out M R values from the value range N of R values as the selected R value.
- the first value interval can be selected according to needs. Illustratively, if N is 0 to 255, the first value interval can be 2, 4, 8, and so on. Correspondingly, M is 128, 64, 32, and many more.
- the second value interval can be selected according to needs. Illustratively, if N is 0 to 255, the second value interval can be 2, 4, 8, and so on. Correspondingly, M is 128, 64, 32, and many more.
- the third value interval can be selected according to needs. For example, if N is 0 to 255, the third value interval can be 2, 4, 8, and so on. Correspondingly, M is 128, 64, 32, and many more.
- first value interval, second value interval, and third value interval may be the same or different, or two of them take the same value and the other one takes a different value. Specific choices can be made according to specific needs.
- first value interval, the second value interval, and the third value interval are equal, and are all 4, then M, O, and P are all 64, and 643 sets of selected RGB data can be obtained.
- the first value is all 0, then the selected R value, the selected G value, and the selected B value are selected All are 0, 4, 8, 12...124, 128, 131, 135...247, 251, 255.
- the size of the first value interval is the a-th power of 2, so that the selected R value can equally divide the value range N of the R value into multiple segments; the size of the second value interval To the b-th power of 2, so that the selected G value can equally divide the value range N of the G value into multiple segments; the size of the third value interval is the c-th power of 2, so that the B value is selected
- the value range N of the B value can be equally divided into multiple sections.
- a, b, and c are all positive integers, and the first value interval, the second value interval, and the third value interval are all smaller than the value range N.
- the values of the first value interval, the second value interval, and the third value interval are equal.
- S412 Calculate the RGB mapping data of each group of selected RGB data.
- Calculating the RGB mapping data of each group of selected RGB data includes: for each group of selected RGB data, combined with the first conversion formula to calculate the corresponding tristimulus value; according to the calculated tristimulus value, combined with the second conversion formula to obtain RGB mapping data corresponding to each group of selected RGB data.
- the first conversion formula is: the tristimulus value is equal to the first conversion matrix multiplied by the RGB data; the second conversion formula is: the tristimulus value is equal to the second conversion matrix multiplied by the RGB mapping data.
- the calculation method of the first conversion formula includes:
- S504 Obtain the white color coordinates of the display when the screen is lit white.
- the color coordinates of white when the screen is lit white can be detected by optical instruments.
- the first conversion formula is:
- XYZ is the observer's spectral tristimulus value, referred to as tristimulus value;
- RGB is the original RGB data, and the relationship between the two is: the tristimulus value is equal to the first conversion matrix multiplied by the RGB data, that is, the above-mentioned first conversion formula.
- S506 Calculate the first conversion matrix according to the color coordinates of the three primary colors of red, green and blue and the color coordinates of white.
- the first conversion matrix H can be calculated according to the following formula:
- the first conversion matrix H After converting the intermediate values Sr, Sg, and Sb calculated by formula (3) into a diagonal matrix, and then multiplying it with the color coordinates of the original RGB, the first conversion matrix H can be obtained. Taking the data in Table 1 as an example, it can be calculated:
- the first conversion matrix H in the first conversion formula (2) is calculated based on the data in Table 1.
- the first conversion matrix H may be different, depending on what the display itself wants to achieve The value of the first conversion matrix H can be changed.
- the calculation method of the second conversion formula includes:
- S602 Obtain the color coordinates of red, green, blue and white when each set of selected RGB data is used to light up the screen of the display.
- the color coordinates of red, green, blue and white when the RGB data is selected to light up the screen of the display can be detected by optical instruments.
- the red, green, blue, and white coordinates of the display are measured by optical instruments as shown in Table 2 below.
- the second conversion formula is:
- XYZ is the observer's spectral tristimulus value, referred to as tristimulus value
- R'G'B' is the RGB mapping data of the original RGB data, and the relationship between the two is: the tristimulus value is equal to the second conversion matrix multiplied by RGB
- the mapping data is the above-mentioned second conversion formula.
- the RGB mapping data is the product of the tristimulus value and the inverse matrix of the second conversion matrix, and the tristimulus value can be calculated according to the first conversion formula (6); that is, as long as the second conversion matrix is known RGB mapping data can be calculated.
- the second conversion matrix I can be calculated according to the following formula:
- the second conversion formula corresponds to the second conversion formula when the input RGB data is (255, 255, 255).
- the corresponding second conversion matrix can be calculated by the above method, that is, each group of selected RGB data corresponds to a second conversion matrix used to calculate the corresponding RGB mapping data, so as to calculate each Set the RGB mapping data of the selected RGB data.
- S414 Establish a display look-up table based on the selected RGB data of the M ⁇ O ⁇ P group and the RGB mapping data corresponding to each group of selected RGB data.
- the display look-up table contains the M ⁇ O ⁇ P group of selected RGB data and the RGB mapping data corresponding to each group of selected RGB data.
- the input original RGB data is the same as the selected RGB data
- the corresponding RGB mapping data can be found in the display look-up table to complete the screen color adjustment.
- the selected RGB data is only a part of the original RGB data range, the amount of data stored in the display look-up table is smaller, thereby saving hardware resources.
- the method in the embodiments of the present disclosure may be executed by a single device, such as a computer or a server.
- the method of the embodiment of the present disclosure can also be applied in a distributed scenario, and multiple devices cooperate with each other to complete. Among them, in the case of being applied to a distributed scenario, one of the multiple devices may only execute one or more steps of the method of the embodiment of the present disclosure, and the multiple devices will interact with each other to complete the display The toning method.
- Some embodiments of the present disclosure also provide a color toning device for a display, including:
- the input component 701 is configured to obtain the original RGB data of the pixels of the screen
- the memory 702 stores a display lookup table.
- the display look-up table includes multiple sets of selected RGB data and RGB mapping data corresponding to each set of selected RGB data; the selected RGB data is part of the original selected according to the preset method within the range of the original RGB data corresponding to the display RGB data.
- the processor 703 is configured to:
- RGB mapping data corresponding to the original RGB data in the display look-up table, use the RGB mapping data corresponding to the original RGB data to perform screen toning;
- the original RGB data, the multiple sets of selected RGB data, and the data corresponding to each set of selected RGB data are used.
- RGB mapping data combined with a predetermined interpolation algorithm, calculates the RGB mapping data corresponding to the original RGB data, and uses the calculated RGB mapping data to perform screen color adjustment.
- the output component 704 is configured to output the toned screen from the display.
- the toning device of the display determines whether there is RGB mapping data corresponding to the original RGB data in the display look-up table; when the RGB mapping data corresponding to the original RGB data exists in the display look-up table, directly Use the RGB mapping data corresponding to the original RGB data to color the screen; if there is no RGB mapping data corresponding to the original RGB data in the display look-up table, use a predetermined interpolation algorithm to calculate the RGB mapping data of the original RGB data, and use The calculated RGB mapping data is color-graded; then the color-graded image is output. With this color correction method, less mapping data can be stored in the display look-up table, so that the display look-up table occupies less hardware resources.
- the color toning method provided by the embodiments of the present disclosure adopts a method of combining linear and non-linear, so that the finally output RGB mapping data can not only meet the requirements of the color gamut, but also match the best color requirements, and the application of the interpolation method also enables The occupancy rate of hardware resources is reduced.
- the processor 703 is configured to:
- Calculate the RGB mapping data of each group of selected RGB data including: for each group of selected RGB data in the M ⁇ O ⁇ P group of selected RGB data, combined with the first conversion formula, calculate the corresponding tristimulus value; according to the calculation The obtained tristimulus values are combined with the second conversion formula to obtain the RGB mapping data corresponding to each group of selected RGB data;
- the RGB data and the corresponding RGB mapping data are selected, and the display look-up table is established.
- the processor 703 is configured to:
- the R value in the original RGB data is in the section of the M selected R values, and the G value is in the area of the O selected G values.
- the processor 703 is configured to:
- a first conversion matrix is calculated; wherein, the first conversion formula is: the tristimulus value is equal to the first conversion matrix multiplied by the RGB data .
- the processor 703 is configured to:
- the corresponding second conversion matrix is calculated according to the corresponding measured red, green, blue and white color coordinates; wherein, the second conversion formula is: the tristimulus value is equal to the second conversion The matrix is multiplied by the RGB mapping data.
- the functions are divided into various modules and described separately.
- the functions of each module can be implemented in the same or multiple software and/or hardware.
- the color toning device for the display area provided by the embodiment of the present disclosure is used to implement the color toning method of the display area in the foregoing embodiment, and has the same beneficial effects as the color toning method of the display area, and will not be repeated here.
- the electronic device may include: a processor 801, a memory 802, an input/output interface 803, a communication interface 804, and a bus 805.
- the processor 801, the memory 802, the input/output interface 803, and the communication interface 804 realize the communication connection between each other in the device through the bus 805.
- the processor 801 may be implemented by a general CPU (Central Processing Unit, central processing unit), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits for execution related Program to implement the toning method provided by the embodiments of the present disclosure.
- CPU Central Processing Unit
- microprocessor microprocessor
- application specific integrated circuit Application Specific Integrated Circuit, ASIC
- ASIC Application Specific Integrated Circuit
- the memory 802 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc.
- the memory 802 can store an operating system and other application programs.
- the related program code is stored in the memory 802 and is executed by the processor 801. Call execution.
- the input/output interface 803 is used to connect input/output components to realize information input and output.
- the input/output/module can be configured in the device as a component (not shown in the figure), or can be connected to the device to provide corresponding functions.
- the input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and an output device may include a display, a speaker, a vibrator, an indicator light, and the like.
- the communication interface 804 is used to connect a communication module (not shown in the figure) to realize the communication interaction between the device and other devices.
- the communication module can realize communication through wired means (such as USB, network cable, etc.), or through wireless means (such as mobile network, WIFI, Bluetooth, etc.).
- the bus 805 includes a path for transmitting information between various components of the device (for example, the processor 801, the memory 802, the input/output interface 803, and the communication interface 804).
- the device may also include the equipment necessary for normal operation. Other components.
- Some embodiments of the present disclosure provide a computer-readable storage medium (for example, a non-transitory computer-readable storage medium), the computer-readable storage medium stores computer program instructions, and when the computer program instructions run on a processor , Causing the processor to execute one or more steps in the toning method described in any one of the foregoing embodiments.
- a computer-readable storage medium for example, a non-transitory computer-readable storage medium
- Computer-readable media includes permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
- the information can be computer readable instructions, data structures, program modules, or other data.
- Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices.
- PRAM phase change memory
- SRAM static random access memory
- DRAM dynamic random access memory
- RAM random access memory
- ROM read-only memory
- EEPROM electrically erasable programmable read-only memory
- flash memory or other memory technology
- CD-ROM
- Various computer-readable storage media described in this disclosure may represent one or more devices and/or other machine-readable storage media for storing information.
- the term "machine-readable storage medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
- Some embodiments of the present disclosure also provide a computer program product.
- the computer program product includes computer program instructions, and when the computer program instructions are executed on a computer, the computer program instructions cause the computer to execute one or more steps in the color toning method of the display as described in the foregoing embodiment.
- Some embodiments of the present disclosure also provide a computer program.
- the computer program When the computer program is executed on the computer, the computer program causes the computer to execute one or more steps in the color toning method of the display as described in the above embodiments.
- the accompanying drawings may or may not be shown in relation to integrated circuit (IC) chips and other components.
- IC integrated circuit
- Well-known power/ground connection IC
- the device may be shown in the form of a block diagram in order to avoid making one or more embodiments of this specification difficult to understand, and this also takes into account the fact that the details about the implementation of these block diagram devices are highly dependent on the implementation of the present invention. Description of the platform of one or more embodiments (that is, these details should be fully within the understanding of those skilled in the art).
- DRAM dynamic RAM
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Abstract
Description
Claims (18)
- 一种显示器的调色方法,包括:获取画面像素点的原始RGB数据;调用显示查找表,确定所述显示查找表中是否存在与所述原始RGB数据对应的RGB映射数据;其中,所述显示查找表包括多组选定RGB数据和与每组选定RGB数据对应的RGB映射数据;选定RGB数据为在显示器对应的原始RGB数据的取值范围内,按照预设方法选取的部分RGB数据;若所述显示查找表中存在与所述原始RGB数据对应的RGB映射数据,则利用与所述原始RGB数据对应的RGB映射数据进行画面调色;若所述显示查找表中不存在与所述原始RGB数据对应的RGB映射数据,则利用所述原始RGB数据、所述多组选定RGB数据、和与每组选定RGB数据对应的RGB映射数据,结合预定插值算法,计算所述原始RGB数据对应的RGB映射数据,并利用计算得到的RGB映射数据进行画面调色。
- 根据权利要求1所述的调色方法,还包括:根据显示器的信号源的数据大小,确定原始RGB数据所包含的R值、G值、和B值对应的取值范围N;按照第一取值间隔,从R值的取值范围N中取出M个R值作为选定R值;按照第二取值间隔,从G值的取值范围N中取出O个G值作为选定G值;按照第三取值间隔,从B值的取值范围N中取出P个B值作为选定B值;得到M×O×P组选定RGB数据;计算每组选定RGB数据的RGB映射数据;根据M×O×P组选定RGB数据及每组选定RGB数据对应的RGB映射数据,建立所述显示查找表。
- 根据权利要求2所述的调色方法,其中,所述第一取值间隔的大小为2的a次方,所述第二取值间隔的大小为2的b次方,所述第三取值间隔的大小为2的c次方;其中,a、b、c均为正整数,且所述第一取值间隔、所述第二取值间隔和所述第三取值间隔均小于取值范围N。
- 根据权利要求2或3所述的调色方法,其中,所述第一取值间隔、所述第二取值间隔和所述第三取值间隔的取值相等。
- 根据权利要求2~4中任一项所述的调色方法,其中,所述利用所述原始RGB数据、所述多组选定RGB数据、和与每组选定RGB数据对应的RGB映射数据,结合预定插值算法,计算所述原始RGB数据对应的RGB映射数 据,包括:根据所述原始RGB数据和所述多组选定RGB数据,确定所述原始RGB数据所包含的R值处于M个选定R值中的区段、G值处于O个选定G值中的区段、以及B值处于P个选定B值中的区段;根据所述原始RGB数据中的R值、G值、和B值各自所处的区段的较小的端点值,确定第一目标RGB数据;根据所述原始RGB数据中的R值、G值、和B值各自所处的区段的较大的端点值,确定第二目标RGB数据,结合原始RGB数据、第一目标RGB数据的RGB映射数据、和第二目标RGB数据的RGB映射数据,利用所述预定插值算法计算所述原始RGB数据对应的RGB映射数据。
- 根据权利要求5所述的调色方法,其中,所述预定插值算法为线性差值算法。
- 根据权利要求2~6中任一项所述的调色方法,其中,所述计算每组选定RGB数据的RGB映射数据,包括:针对每组选定RGB数据,结合第一转换公式,计算得到相应的三刺激值;其中,所述第一转换公式为:三刺激值等于所述第一转换矩阵乘以RGB数据;根据计算得到的三刺激值,结合第二转换公式,得到每组选定RGB数据对应的RGB映射数据;其中,所述第二转换公式为:三刺激值等于所述第二转换矩阵乘以RGB映射数据。
- 根据权利要求7所述的调色方法,其中,所述第一转换矩阵的计算方法,包括:获取预先选定的色彩空间标准中指定的红绿蓝三基色的色坐标;获取所述显示器在屏幕点亮为白色时的白色的色坐标;根据所述红绿蓝三基色的色坐标和所述白色的色坐标,结合第一转换公式,计算得到第一转换矩阵。
- 根据权利要求7或8所述的调色方法,其中,所述第二转换矩阵的计算方法,包括:获取利用每组选定RGB数据点亮所述显示器的屏幕时的红绿蓝白的色坐标;针对每组选定RGB数据,根据其相应测得的红绿蓝白的色坐标,结合第二转换公式,计算得到相应的第二转换矩阵。
- 根据权利要求1~9中任一项所述的调色方法,还包括:将调色后的画面从所述显示器中输出。
- 一种显示器的调色装置,包括:输入部件,被配置为获取画面像素点的原始RGB数据;存储器,存储有显示查找表,所述显示查找表包括多组选定RGB数据和与每组选定RGB数据对应的RGB映射数据;选定RGB数据为在显示器对应的原始RGB数据的取值范围内,按照预设方法选取的部分原始RGB数据;处理器,被配置为调用显示查找表,确定所述显示查找表中是否存在与所述原始RGB数据对应的RGB映射数据;在所述显示查找表中存在与所述原始RGB数据对应的RGB映射数据的情况下,利用与所述原始RGB数据对应的RGB映射数据进行画面调色;在所述显示查找表中不存在与所述原始RGB数据对应的RGB映射数据的情况下,利用所述原始RGB数据、所述多组选定RGB数据、和与每组选定RGB数据对应的RGB映射数据,结合预定插值算法,计算所述原始RGB数据对应的RGB映射数据,并利用计算得到的RGB映射数据进行画面调色。
- 根据权利要求11所述的调色装置,所述处理器被配置为:根据显示器的信号源的数据大小,确定原始RGB数据所包含的R值、G值、和B值对应的取值范围N;按照第一取值间隔,从R值的取值范围N中取出M个R值作为选定R值;按照第二取值间隔,从G值的取值范围N中取出O个G值作为选定G值;按照第三取值间隔,从B值的取值范围N中取出P个B值作为选定B值;得到M×O×P组选定RGB数据;计算每组选定RGB数据的RGB映射数据;根据M×O×P组选定RGB数据及其对应的RGB映射数据,建立所述显示查找表。
- 根据权利要求12所述的调色装置,所述处理器被配置为:根据所述原始RGB数据和所述多组选定RGB数据,确定所述原始RGB数据中的R值处于M个选定R值中的区段、G值处于O个选定G值中的区段、以及B值处于P个选定B值中的区段;根据所述原始RGB数据中的R值、G值、和B值各自所处的区段的较小的端点值,确定第一目标RGB数据;根据所述原始RGB数据中的R值、G值、和B值各自所处的区段的较大的端点值,确定第二目标RGB数据,结合原始RGB数据、第一目标RGB数据的RGB映射数据、和第二目标RGB数 据的RGB映射数据,利用所述预定插值算法计算所述原始RGB数据对应的RGB映射数据。
- 根据权利要求12或13所述的调色装置,其中,所述处理器还被配置为:获取预先选定的色彩空间标准中指定的红绿蓝三基色的色坐标;获取所述显示器在屏幕点亮为白色时的白色的色坐标;根据所述红绿蓝三基色的色坐标和所述白色的色坐标,计算得到第一转换矩阵;其中,所述第一转换公式为:三刺激值等于所述第一转换矩阵乘以RGB数据。
- 根据权利要求14所述的调色装置,其中,所述处理器还被配置为:利用M×O×P组选定RGB数据中的每组选定RGB数据分别点亮所述显示器;获取所述显示器在按照每组选定RGB数据点亮屏幕时的红绿蓝白的色坐标;针对每组选定RGB数据,根据其相应测得的红绿蓝白的色坐标,计算得到相应的第二转换矩阵;其中,所述第二转换公式为:三刺激值等于所述第二转换矩阵乘以RGB映射数据。
- 根据权利要求11所述的调色装置,还包括:输出部件,被配置为将调色后的画面从所述显示器中输出。
- 一种电子设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述程序时实现如权利要求1~10中任意一项所述的显示器的调色方法中的一个或多个步骤。
- 一种非暂态计算机可读存储介质,所述非暂态计算机可读存储介质存储计算机指令,所述计算机指令被配置为执行权利要求1~10中任一项所述的显示器的调色方法中的一个或多个步骤。
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