WO2015100881A1 - 图像处理装置、图像处理方法、显示装置、计算机程序及计算机可读介质 - Google Patents
图像处理装置、图像处理方法、显示装置、计算机程序及计算机可读介质 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
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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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
- G09G3/2003—Display of colours
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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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
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
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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
- 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
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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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
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0457—Improvement of perceived resolution by subpixel rendering
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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
- G09G2340/00—Aspects of display data processing
- G09G2340/06—Colour space transformation
Definitions
- the present invention relates to the field of display technologies, and in particular, to an image processing apparatus, an image processing method, a display apparatus, a computer program, and a computer readable medium.
- the RGB color mode is a color standard in the industry, which is obtained by changing the three color channels of red (R), green (G), and blue (B) and superimposing them on each other. of. Due to the large power consumption of the RGB color mode, red, green, blue, and white (RGBW) modes have appeared. On the basis of the original RGB three primary colors, a white sub-pixel is added to increase the white area transmission area. , improve the effective profit of energy ffi, increase display brightness, reduce power consumption.
- the AMOLED (Active Matrix Organic Light Emitting Diode) panel is an active matrix organic light emitting diode panel. Compared with the conventional liquid crystal panel, the AMOLED panel has the characteristics of faster response, higher contrast, and wider viewing angle.
- the conventional white-light AMOLED panel is realized by an array substrate comprising an organic light-emitting diode that emits white light, and a color filter (CF) substrate of three colors of RGB.
- CF color filter
- the CF transmittance of the three colors of RGB is relatively low, and most of the white light emitted by the organic light emitting diode is absorbed by CF. To ensure the display brightness, the current through the organic light emitting diode needs to be increased, resulting in display.
- the AMOLED panel is composed of white AMOLED plus red, green, blue and white CF.
- the neutral color brightness will be provided by white sub-pixels.
- the transmittance of the white sub-pixel is much higher than the transmittance of the RGB pixel, so that the display power consumption can be greatly reduced under the same brightness requirement.
- the traditional method of converting RGB signals into RGBW signals is to replace the light emitted by RGB with a fixed proportion of white light.
- the common algorithm is to output the value as the white data with the minimum value of the original RGB data values, and the original RGB.
- the difference between the data value and the white data value is used as the RGB data output value, thereby achieving the purpose of low power consumption or high brightness.
- the white sub-pixel When the display panel of the algorithm is displayed, only two sub-pixels of the three sub-pixels RGB are illuminated in each pixel, one of the sub-pixels does not emit light, and the white sub-pixel always emits light, as a whole, the white sub-pixel
- the use of pixels is more serious than the use of RGB sub-pixels, and the use of four sub-pixels is very different, causing excessive ffi white sub-pixels, resulting in shortened lifetime of white sub-pixels, resulting in a shortened overall lifetime.
- RGB sub-pixels are used excessively, the white sub-pixels are used less, which will cause the lifetime of the RGB sub-pixels to be shorter than that of the white sub-pixels, so the overall lifetime will also be shortened.
- the RGB sub-pixel and the W sub-pixel use are greatly different, resulting in different lifetimes of the RGB sub-pixel and the W sub-pixel, which ultimately leads to a decrease in overall lifetime. technical problem.
- An image processing apparatus including:
- a receiving module configured to receive externally input three-color source data, and obtain a minimum value of the three-color source data
- a data conversion module configured to convert the three color source data into four color data including a fourth color, and output the four color data; wherein, the value of the fourth color data in the four color data is based on Determining, by the minimum value of the three-color source data and the first ratio of the fourth color data, that the value of the other color data other than the fourth color in the four-color data is determined according to the value of the fourth color data. ;
- the statistical module is used to count the displayed values of the four-color data
- an adjustment module configured to control the data conversion module to adjust the first ratio of the fourth color data according to the display value of the four color data counted by the unified module.
- the three color sources are red, green, and blue.
- the fourth color is white.
- the display value of the four color data is a brightness value or a gray level value.
- the adjusting module further adjusts the first ratio of the white data according to an average value of the red, green, and blue data display values and a white data display value.
- the adjustment module is further configured to compare an average value of the red, green, and blue data display values with a white data display value, where an average value of the red, green, and blue data display values is greater than the white data.
- the first ratio of the white data is adjusted to the second ratio; when the average value of the red, green, and blue data display values is smaller than the display value of the white data, the first ratio of the white data is adjusted For the third ratio.
- the value of the second example is greater than the value of the third example.
- the second ratio is any value greater than 0.6 or less than 0.9
- the third ratio is any value greater than or equal to 0.1 and less than or equal to 0.6.
- An embodiment of the present invention further provides an image processing method, including:
- the value of the fourth color data in the four color data is determined according to a minimum value of the three color source data and a first ratio of the fourth color data, except for the fourth color in the four color data.
- the values of other color data are determined based on the values of the fourth color data;
- the first ratio of the white data is adjusted according to the display value of the four color data of the system.
- the three color sources are red, green, and blue.
- the fourth color is white.
- the display value of the four color data is a brightness value or a gray level value.
- the step of adjusting the first ratio of the white data according to the display situation of the four color data further comprises: adjusting the average value of the red, green, and blue data display values and the white data display value The first ratio of white data.
- the first ratio of the white data is adjusted every predetermined time or every predetermined number of frames.
- the step of adjusting the first ratio of the white data according to the displayed value of the statistical four-color data further comprises: comparing an average value of the red, green, and blue data display values with a white data display value When the average value is greater than the display value of the white data, adjusting the first ratio of the white data to the second ratio; when the average value is smaller than the display value of the white data, the white The first ratio of the data is adjusted to the third ratio.
- the value of the second ratio is greater than the value of the third ratio.
- the second ratio is any value greater than 0.6 or less than 0.9
- the third ratio is any value greater than or equal to 0.1 and less than or equal to 0.6.
- Embodiments of the present invention also provide a display device including the image processing device as described above.
- the embodiment of the invention further provides a computer program, wherein the processor executes the computer program to implement the image processing method.
- the embodiment of the invention further provides a computer readable medium storing the above computer program.
- the beneficial effects of the present invention are: adjusting the first ratio of the white data according to the statistical display value of the four color data, and further adjusting the output value of the subsequent four color data, so that the white subpixel usage is equivalent to that of other color subpixels. , reducing the difference between the white sub-pixel and the other color sub-pixels, which improves the lifetime of each color sub-pixel and improves the overall life compared with the prior art.
- FIG. 1 is a flowchart of an image processing method according to an embodiment of the present invention.
- Fig. 2 is a block diagram showing the structure of an image processing apparatus according to an embodiment of the present invention. detailed description
- a red color, a green color, and a blue color are taken as an example to describe a three-color source, and a white color is taken as an example to describe a fourth color in the four-color data, but is not limited thereto.
- FIG. 1 it is a flowchart of an image processing method according to an embodiment of the present invention.
- the image processing method includes the following steps:
- Step S101 receiving externally input red, green, and blue three-color source data, and acquiring minimum values of the red, green, and blue three-color source data;
- Step S102 converting the red, green, and blue color data into four colors of red, green, blue, and white, and outputting the four color data; wherein, the white data in the four color data The value is determined according to the minimum value of the red, green, and blue color data and the first ratio of the white data, and the values of the red, green, and blue data in the four color data are based on the value of the white data. Determining; Step S103: counting the display value of the four color data;
- Step Adjust the first ratio of the white data based on the displayed value of the statistical four-color data.
- the image processing method of the present invention adjusts the first ratio of the white data according to the displayed value of the statistical four-color data, and further adjusts the output value of the subsequent four-color data, so that the usage of the white sub-pixel is equivalent to that of other color sub-pixels, and is reduced.
- the difference between the use of white sub-pixels and other color sub-pixels improves the lifetime of the ffi of each color sub-pixel, thereby improving the overall lifetime.
- the externally input trichromatic source data may be red, green, and blue data, that is, RGB data.
- the step needs to determine the minimum value of the three-color source data, and the commonly obtained three-color source data is generally a grayscale value. Therefore, obtaining the minimum value of the three-color source data is the minimum gray-scale value of the three-color source data.
- the minimum gray level in the tri-color source data means the maximum gray level that the white data can replace without reducing the color saturation.
- the acquisition of the minimum grayscale value can be taken by 3 ⁇ 4 existing techniques, such as the minimum extractor.
- the grayscale value may be used to obtain the three color source data, and the grayscale value is only an exemplary embodiment, as long as the value of the three color source data can be determined, the 3 ⁇ 4 Other types of evaluation values.
- step S102 the red, green, and blue data are converted into four colors of red, green, blue, and white, thereby generating a mixed light.
- the value of the white data in the four-color data is determined according to the minimum value of the three-color source data and the first ratio of the white data, and the data of the red, green, and blue data in the four-color data is based on the white data. The value is determined.
- the initial value of the first ratio of white data is preset, and may be any value between 0-1.
- the steps S103 and S104 the value of the first ratio of the white data is adjusted, and the first ratio of the white data is correspondingly modified according to the adjustment result, and the real-time modification of the first ratio may be adjusted in real time, thereby adjusting four.
- the use of chrominated pixels Of course, it is also possible to perform an intermittent adjustment, making a modification every predetermined time, for example every 5 seconds, or once every predetermined number of frames.
- the red, green, and blue color data are converted into four color numbers of red, green, blue, and white. According to the following equation of ffi:
- R, G, B are the three-color source data before conversion
- R, G, B', and W are the converted four-color data
- WMR is the first ratio of white data
- Min(R, G, B) is the minimum value of the three-color source data.
- red, green, and blue data into red, green, blue, and white data.
- Step 1 Determine the gray scale of the converted white data W
- Li (i/GL) ⁇ ( ⁇ represents the gamma value, generally 2.2)
- i is the minimum gray level in the three-color source data acquired in step S101, that is, i-Min( , G, B) ;
- Li is the corresponding brightness value of the minimum gray level in the three-color source data (GL: WMR (White Mixing Ratio), which represents the first ratio of white data;
- LW is the luminance value of white data, and the luminance value LW of white data is the smallest ratio of the first ratio WMR of white data and the three color source data.
- the product of the luminance value U corresponding to the order is determined; then the luminance value LW of the white data is converted into the gray scale of the white data.
- Step 2 Determine the gray scales R', G', B of the converted red, green, and blue data.
- ⁇ LRJLQLB ⁇ is the brightness before RGB conversion (that is, the corresponding brightness of the three color source data); LW the brightness value of white data (ie the brightness replaced by white light); subtract the brightness before RGB conversion
- the brightness value of the white data can be obtained by RGB converted brightness ⁇ LR', LG', LB' ⁇ , and then the RGB converted brightness value is converted into the converted RGB gray level m', G', B' ⁇ .
- the first ratio of white data directly affects the output value of the final four-color data, which determines the ffi condition of the four sub-pixels in the display panel, so the first ratio of white data can be adjusted by control. Reduce the difference in usage of four sub-pixels and improve overall display life.
- the display value of the four color data may be a grayscale value or a luminance value.
- the display value of the four-color data reflects the display of the four sub-pixels, because the white-light AMOLED display panel of the RGBW display mode is required to control the white light of the desired light-emitting diode in the corresponding sub-pixel to emit the white light through the color film and mix it out through the color film. colour. Therefore, the light emitting units of each sub-pixel are identical, and both are white organic light emitting diodes.
- the first proportional control of the subsequent white data can be adjusted according to the display condition of the previous four-color data.
- the output value of the subsequent four-color data so as to avoid a large difference between the use of four sub-pixels in the long-time display, resulting in excessive use of a certain pixel in the sub-pixel, the lifespan correspondingly shortened, and ultimately the overall life of the panel is reduced. The situation.
- the specific statistical method can directly obtain the brightness value or the gray level value of the four-color data output, and add and count the brightness value or the gray value of each color; or detect the brightness value of each color of the panel through a detecting device, such as a lighting machine. Or grayscale values, and add and count the luminance values or grayscale values of each color.
- the method of acquiring the display value of the four-color data is not limited.
- an adder can be used to count the four-color data display value, and the obtained four-color data display values are separately added and counted, and the statistical display value can be the display value of each of the red, green, and blue data or red. , green and blue display the average value of the value and the display value of the white data.
- RGB the statistical value of the calculator and the white display value.
- the statistic values RGB calculator and white of the RGB gray scale are separately counted.
- Gray scale statistics W___caIc 1aior where,
- RGB calculator ⁇ (Sum(R'(n)) + Sum(G'(n)) + Sum(B'(n))) / 3
- Sum(R')) represents the gray scale sum of the converted red sub-pixels in n images ( n ⁇ 1)
- Sum(G ' (n)) represents the total gray scale of the converted green sub-pixels in n images (n ⁇ 1)
- Sum(B ' )) represents the gray scale sum of the converted blue sub-pixels in n images ( n ⁇ 1)
- Sum(W(n)) represents the white sub-pixels in n images Gray scale total (n ⁇ 1)
- the statistical value of RGB luminance is separately counted RGB.—the value of calculator and white luminance W.—cakulator, where
- RGB calculator ⁇ (Sum(LR'(n)) + Sum(LG'(n)) + Sum(LB'(n))) / 3
- SumfLR ' (n)) represents the sum of the luminances of the converted red sub-pixels in n images (n ⁇ 1)
- Sum(LG ' (r ) represents the sum of the luminances of the converted green sub-pixels in the ⁇ image (n ⁇ 1)
- Sum(LB ' (n)) represents the sum of the brightness of the converted blue sub-pixels in 11 images (n ⁇ 1)
- Sum (LW (ii)) represents the total brightness of the white sub-pixels in n images Combination (n ⁇ 1)
- RGB_ calculator represents the statistical average of the RGB data display values
- W_ calculator represents the statistical value of the white data display value
- the average value of the red, green, and blue display values (brightness or gray scale) and the display value of the white data (brightness or gray scale) can visually reflect the respective use of the red, green, blue sub-pixels, and white sub-pixels.
- the data usage of the red, green, blue sub-pixels and white sub-pixels is adjusted.
- the first ratio of the white data is adjusted according to the display value of the four color data, and specifically, the first ratio is adjusted according to the display value of the four color data.
- the first ratio of the white data is adjusted based on an average of the red, green, and blue data display values and a display value of the white data. Specifically, comparing the average value of the red, green, and blue data display values with the white data display value, and adjusting the first ratio of the white data to the second ratio when the average value is greater than the display value of the white data; When the average value is smaller than the display value of the white data, the first ratio of the white data is adjusted to the third ratio. Wherein, the value of the second ratio is greater than the value of the third ⁇ : example.
- the second ratio is greater than 0 6 and less than or equal to any value of 0 chiropractor9
- the third The ratio is any value greater than or equal to 0.1 and less than or equal to 0.6.
- the second ratio is 0.6 to 0.9, including 0, 9, and the third ratio is 0.1 to 0.6, including 0.1.
- the values of the second ratio and the third ratio are obtained through a large number of standard image experiments, and have universality and accuracy.
- the average value of the red, green, and blue data display values is greater than the display value of the white data (RGB_cakulator > W... calculator)
- the statistical conclusion is that during the previous display process, red, green, and blue
- the ffi case of the sub-pixel is larger than that of the white sub-pixel.
- the red, green, and blue sub-pixels are prevented from being overused.
- the first ratio of the white data is adjusted to the second.
- the ratio, that is, the adjusted WMR is any value greater than 0.6 or less than 0.9.
- the usage of the white sub-pixels is a higher ratio, and the red, green, and blue sub-pixels can be used too much before the white sub-pixels are used too much, resulting in the use of each color sub-pixel.
- the service life of each color sub-pixel is improved, thereby improving the overall life; similarly, when the average value of the red, green, and blue data display values is greater than the display value of the white data (RGB) — calculator ⁇ W — calculator, that is, the statistical conclusion is that in the previous display process, the white sub-pixels are larger than the red, green, and blue sub-pixels, in order to balance the sub-pixels.
- the first ratio of white data is adjusted to a third ratio, that is, the WMR is adjusted to any value greater than or equal to 0.1 or less than 0.6.
- the usage of red, green, and blue sub-pixels is a higher ratio, which can balance the use of white sub-pixels too much, and the white sub-pixels make 3 ⁇ 4 too small to cause each color sub-pixel to be made) 3 ⁇ 4
- the difference in the situation, compared with the prior art improves the life of each color sub-pixel, thereby improving the overall life.
- RGB-calculator W_calculator
- the statistical value of each display value in step S103 can be cleared.
- the first ratio of white data WMR is not adjusted and remains unchanged.
- the first ratio of the white data is adjusted to cover each frame after the display, according to the obtained red and green.
- the average value of the blue data display value and the display value of the white data to adjust the first ratio of the white data that is, the average value of the red, green, and blue data display values and the display value of the white data after the display of each frame is adjusted from time to time
- the first ratio of white data also covers every predetermined number of hours
- FIG. 2 it is a structural block diagram of an image processing apparatus according to an embodiment of the present invention.
- the image processing apparatus includes:
- the receiving module 00 is configured to receive externally input red, green, and blue color data, and obtain a minimum value of the red, green, and blue color source data;
- the data conversion module 200 is configured to convert the red, green, and blue color data into four colors of red, green, blue, and white, and output the four color data; wherein, the four color data
- the value of the white data is determined according to the minimum value of the red, green, and blue color data and the first ratio of the white data, and the values of the red, green, and blue data in the four color data are based on the white data. Value to determine;
- the UI module 300 is configured to count the display value of the four color data
- the adjusting module 400 is configured to control the data conversion module to adjust the first ratio of the white data according to the display value of the four color data counted by the statistics module.
- the three color source data received by the receiving module 100 is red, green, and blue data, and g RGB data.
- the step needs to determine the minimum value of the three-color source data, and the commonly obtained three-color source data is generally a grayscale value. Therefore, obtaining the minimum value of the three-color source data is the minimum grayscale value of the three-color source data.
- the minimum gray level in the tri-color source data means the maximum gray level that the white data can replace without reducing the color saturation.
- the acquisition of the minimum grayscale value may employ an existing technique such as a minimum value extractor or the like.
- the data conversion module 200 is configured to convert red, green, and blue data into four colors of red, green, blue, and white, and output them to generate a mixed light.
- the value of the white data in the four-color data is determined according to the minimum value of the three-color source data and the first ratio of white data, and red, green, and blue in the four-color data.
- the data of the color data is determined based on the value of the white data.
- the initial value of the first ratio of white data is preset, and may be any value between 0-].
- the value of the first ratio is adjusted, and the first ratio is correspondingly modified according to the adjustment result, which may be modified in real time, and the first ratio of white data is adjusted in real time, thereby adjusting four
- the adjustment result which may be modified in real time
- the first ratio of white data is adjusted in real time, thereby adjusting four
- chrominated pixels it is also possible to perform an intermittent adjustment, making a modification every predetermined time, for example every 5 seconds, or making a modification every predetermined number of frames.
- the algorithm used to convert the red, green, and blue data into red, green, blue, and white data may refer to step S102 in the image processing method of the foregoing embodiment, and details are not described herein again.
- the statistic module 300 is configured to count the display value of the four color data and supply the display value of the four color data to the adjustment module 400, and the display value of the four color data may be a grayscale value or a brightness value.
- the display value of the four-color data reflects the display of the four sub-pixels, because the white-light AMOLED display panel of the RGBW display mode is required to control the white light that needs brightness by the organic light-emitting diode in the corresponding sub-pixel and mix it through the color film. colour. Therefore, the light-emitting units of each sub-pixel are identical, and both are white organic light-emitting diodes.
- the statistic module 300 can directly obtain the brightness value or the gray level value of the four color data output, and add and statistic the brightness values of the colors; the statistic module can also detect the brightness of each color display of the panel through a detecting device, such as a lighting machine. Value or grayscale value, and sum and count the luminance values or grayscale values of each color.
- the method of acquiring the display value of the four-color data is not limited.
- the statistic module 300 can use an adder to count the four-color data display value, and add the acquired four-color data display values respectively, and the statistical display values can be red, green, and blue data respectively.
- the statistical data is divided into the RGB value of the RGB display value RGB_calculator and the statistical value of the white display value W_calculator.
- step S103 refer to the image processing method of the foregoing embodiment, step S103.
- the adjustment module 400 is configured to control the data conversion module 200 to adjust the first ratio of the white data according to the display value of the four color data of the statistical module, optionally, according to red, green, and blue.
- the data displays an average of the values and a display value of the white data to adjust the first ratio of the white data.
- the adjustment module 400 first obtains an average value of the red, green, and blue data display values and a white data display value of the statistical module, and then compares the sizes of the two, when the average value is greater than the white data.
- the control data conversion module 200 adjusts the first ratio of the white data to the second ratio, and the second ratio will be used as the subsequent single frame (or multiple frames as needed).
- the images are red, green, and blue.
- the ratio is adjusted to the third ratio. Wherein, the value of the second ratio is greater than the value of the third ratio.
- the second ratio is any value greater than 0.6 or less than 0.9
- the third ratio is any value greater than or equal to 0.1 and less than or equal to 0.6.
- the image processing apparatus of the present invention adjusts the first ratio of the white data according to the statistical display value of the four-color data, and further adjusts the output values of the subsequent four-color data so that the white sub-pixels are made with other color sub-pixels.
- the situation is similar.
- the difference between the usage of white sub-pixels and other color sub-pixels is reduced, and the service life of each color sub-pixel is improved compared with the prior art, thereby improving the overall life.
- S101 Determine the minimum gray level of the input three color source data
- Get three-color source data including red, green, and blue data, and ffi is the RGB data.
- the minimum gray level Hmm(R, QB) of the three-color source data is determined, which represents the maximum gray level that the white data can replace without lowering the color saturation.
- Li (i/GL) ⁇ ( ⁇ represents the gamma value, generally 2.2)
- 1 is the minimum gray level in the three-color source data acquired in step S101, that is, i-min(R, G, B); Li is the corresponding brightness value of the minimum gray level in the three-color source data (GL) : total gray scale); WMR (White Mixing Ratio) , which represents the first ratio of white data; LW is the luminance value of white data, and the luminance value LW of white data is the first ratio WMR and trichromatic source of white data The product of the luminance value U corresponding to the minimum gray scale in the data is determined; then the luminance value LW of the white data is converted into the gray scale 1 ⁇ of the white data.
- WMR White Mixing Ratio
- ⁇ LR GLB ⁇ is the brightness before RGB conversion (ie, the corresponding brightness of the three-color source data); LW the brightness value of white data (ie, the brightness replaced by white light); the brightness before RGB conversion minus the brightness of white data
- the value, the RGB converted luminance ⁇ LR', LG', LB' ⁇ can be obtained, and then the RGB converted luminance value is converted into the converted RGB grayscale ⁇ R', G'JB' ⁇ .
- 5104 Acquire a display value of the four-color data, and adjust a first ratio of the white data according to a display value of the four-color data.
- the first ratio of the white data is adjusted according to the display value of the four color data, and the first aspect of how to adjust the white data is described in detail below in conjunction with the embodiment:
- Embodiment 1 Adjusting the mixing ratio of white data according to the display value of RGBW Theoretically, the usage probability of RGB should be the same, as in the long-term statistical data in the standard image IEC62087, so the statistical data can be divided into RGB gray scales.
- Sum( ' (n)) represents the gray scale sum of the converted red sub-pixels in n images (n ⁇ 1)
- Sum(G' (n)) represents the gray scale of the converted green sub-pixels in n images Total (n ⁇ 1)
- Sum(B' ( ⁇ represents the total gray scale of the converted blue sub-pixels in n images ( ⁇ ⁇ 1)
- Sum(W(n)) represents the gray scale sum of n sub-pixels in n images (n ⁇ 1)
- RGB calculator ⁇ (Sum(LR' (n)) + Sum(LG ' (n)) + Sum(LB ' (n))) / 3 W— .calculator Sum(LW (n))
- Sum(LR' )) represents the sum of the luminances of the converted red sub-pixels in n images (n ⁇ 1)
- SumfLG ' (n)) represents the sum of the luminances of the converted green sub-pixels in n images (n ⁇ 1)
- Sum(LB ' )) represents the sum of the luminances of the converted blue sub-pixels in n images (n ⁇ 1)
- Sum(LW (n)) represents the sum of the luminances of the white sub-pixels in n images (n ⁇ 1)
- the first ratio of white data is adjusted to the second ratio, and the second ratio may be greater than 0.6 and less than or equal to 0.9. Any one of the values; when the RGB-calculator is less than the display value of the W-calculator, the first ratio of the white data is adjusted to a third ratio, and the third ratio may be any one of 0.1 or more and 0.6 or less.
- ffi can count any of the 11 display screens, and then adjust the first ratio of white data according to the display values counted by the n display screens.
- the prior art generally makes the first instance of white data fixed, if long In the case of such pictures, the life of white sub-pixels is much lower than that of other color sub-pixels, resulting in a shortened overall life.
- the first ratio of the white data is adjustable, and the first ratio can be adjusted according to the display value of the four color data.
- the above technical solution is described by taking the subsequent display of the same screen as an example.
- the first ratio is adjusted to the third ratio of white data. At this ratio, the usage of the white sub-pixel is a lower ratio, which is also beneficial for balancing the difference in the usage of the four-color pixel and improving the overall display life.
- the image processing apparatus of the present invention adjusts the first ratio of the white data according to the statistical display value of the four-color data, and further adjusts the output values of the subsequent four-color data so that the white sub-pixels are made with other color sub-pixels.
- the situation is similar.
- the difference between the usage of white sub-pixels and other color sub-pixels is reduced, and the service life of each color sub-pixel is improved compared with the prior art, thereby improving the overall life.
- Embodiments of the present invention also provide a display device including the image processing device as described above.
- the display device can be applied to the following electronic products, including but not limited to: liquid crystal panel, electronic paper, organic light emitting diode panel, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator, etc.
- An electronic product or component that displays functionality including but not limited to: liquid crystal panel, electronic paper, organic light emitting diode panel, mobile phone, tablet computer, television, display, notebook computer, digital photo frame, navigator, etc.
- the embodiment of the invention further provides a computer program, which is executed by a processor to implement the image processing method.
- the embodiment of the invention further provides a computer readable medium storing the above computer program.
- the above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make various modifications and changes without departing from the spirit and scope of the invention. It is the scope of protection of the present invention.
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