CN117998070B - Brightness and white balance regulating method for image and image display equipment - Google Patents
Brightness and white balance regulating method for image and image display equipment Download PDFInfo
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Abstract
The application discloses a brightness and white balance adjusting method of an image and image display equipment, wherein the adjusting method sequentially comprises the following steps: step one, setting target brightness and target white balance state of an RGB three-color light source; step two, setting an initial input quantity of RGB trichromatic light, wherein the input quantity is current or voltage or gear; and thirdly, inputting the current input quantity of RGB trichromatic light, measuring the current brightness and the current color coordinates, judging whether the current brightness reaches the target brightness and whether the current chromaticity reaches the target white balance state, and if not, adjusting the current input quantity of RGB trichromatic light according to the difference value between the current brightness and the target brightness and/or the difference value between the current chromaticity and the target white balance state until the current brightness reaches the target brightness and the current chromaticity reaches the target white balance state, so that the brightness and the white balance of the image can be adjusted simultaneously. The present application also relates to an image display apparatus capable of performing the aforementioned brightness and white balance adjustment method of an image.
Description
Technical Field
The present application relates to image processing, and more particularly, to a brightness and white balance adjustment method of an image, and an image display apparatus capable of performing the brightness and white balance adjustment method of the aforementioned image.
Background
The brightness and white balance are important factors affecting the image quality, wherein the brightness is also called brightness, is a numerical value used for representing the brightness degree of the surface of a light source or a light receiving object, if the brightness is too low, the image is not seen clearly, if the brightness is too high, not only is visual fatigue easily caused, but also the contrast between pure black and pure white of the image is reduced, and the color level and gray level performance are affected; white balance describes the white accuracy generated by mixing three primary colors of red (R), green (G) and blue (B) in an image, and if the white balance is out of balance, the image is color cast and distorted. Therefore, the adjustment of the brightness and white balance of the image displayed by the image display device may be involved in the processing and use of the image display device.
In the prior art, the adjustment of brightness and white balance of an image is generally realized by controlling the ratio of three primary colors of Red (Red), green (Green) and Blue (Blue) in an image display device, specifically, the adjustment of the input voltage or the input current of an RGB lamp to adjust the light intensity and color coordinates.
Moreover, in the prior art, brightness and white balance adjustment of an image are performed separately, that is, brightness is adjusted first and then white balance is adjusted, or brightness is adjusted first and then white balance is adjusted. Since the input amounts of brightness and white balance are the same, separate adjustment of brightness and white balance may cause the adjustment of the subsequent index to affect the previously adjusted index, for example, the brightness is adjusted first, then the white balance is adjusted, the input amount corresponding to the RGB lamp after the brightness is adjusted may not meet the requirement of white balance, and then the input amount corresponding to the RGB lamp after the white balance is adjusted may be changed, so that the brightness requirement is not met, thereby affecting the image quality displayed by the image display device.
Disclosure of Invention
The application has the advantages that the brightness and white balance of the image can be adjusted simultaneously, the influence of subsequent index adjustment caused by separate adjustment of the brightness and the white balance on the previous index adjustment effect is avoided, the white balance effect of the image under specific brightness is realized, and the image quality is improved.
Another advantage of the present application is to provide a brightness and white balance adjustment method of an image capable of more quickly completing brightness and white balance adjustment of an image.
Another advantage of the present application is to provide an image display apparatus capable of performing the brightness and white balance adjustment method of the aforementioned image.
To achieve at least one of the above or other advantages and objects, the present application provides a brightness and white balance adjustment method of an image, which sequentially includes the steps of:
Step one, setting target brightness and target white balance state of an RGB three-color light source;
Step two, setting an initial input quantity of RGB trichromatic light, wherein the input quantity is current or voltage or gear;
Step three, the current input quantity of RGB trichromatic light is input, the current brightness and the current color coordinates are measured, whether the current brightness reaches the target brightness and whether the current chromaticity reaches the target white balance state are judged, if not, the current input quantity of RGB trichromatic light is adjusted according to the difference value between the current brightness and the target brightness and/or the difference value between the current chromaticity and the target white balance state until the current brightness reaches the target brightness and the current chromaticity reaches the target white balance state.
In some embodiments of the present application, in step two, the initial input amount of RGB trichromatic light is set according to the following steps (2.1) to (2.4):
(2.1) setting the target luminance of the G light to L 2, and the target luminance deviation of the G light to σ 4; setting the current input quantity of G light as G-input (N), wherein N is a positive integer; setting the conversion relation of the R light input quantity and the G light input quantity as a scaleGR, setting the conversion relation of the B light input quantity and the G light input quantity as scaleGB, and then entering the step (2.2);
(2.2) inputting only the current input amount G-input (N) of the G light, and measuring the current brightness L 3, and then proceeding to step (2.3);
(2.3) judging whether the I L 2-L3|<σ4 is met, if yes, stopping the initial input quantity adjustment of RGB trichromatic light, setting the current input quantity G-input (N) of G light as the initial input quantity of G light, calculating the initial input quantity R-input (N) of R light and the initial input quantity B-input (N) of B light according to the conversion relation of R light input quantity and G light input quantity scaleGR, the conversion relation of B light input quantity and G light input quantity scaleGB, and if not, entering the step (2.4);
(2.4) updating the current input amount of the G light according to the difference between the current brightness L 3 and the G light target brightness L 2, and then returning to step (2.2).
In some embodiments of the present application, in step (2.4), the input amount of the G light is updated according to formula ③, wherein formula ③ is
G-input (n+1) =g-input (N) + (L 2-L3) × scaleG, where G-input (N) is a current input of G light before update, G-input (n+1) is a current input of G light obtained after update, and scaleG is an input update coefficient of G light when setting an initial input.
In some embodiments of the application, 200.ltoreq. scaleG.ltoreq.400 in the formula ③.
In some embodiments of the present application, in step (2.1) and step (2.3), the conversion relationship between R light input and G light input is scaleGR, and the conversion relationship between B light input and G light input is scaleGB.
In some embodiments of the application, 1.ltoreq. scaleGR.ltoreq. 1.2,2.ltoreq. scaleGB.ltoreq.2.2.
In some embodiments of the application, step three comprises the steps of:
(3.1) inputting current input quantity of RGB trichromatic light, measuring current brightness and current color coordinates, judging whether the current brightness reaches target brightness and whether the current chromaticity reaches target white balance state, stopping brightness and white balance adjustment if the current brightness reaches the target white balance state, and if the current brightness does not reach the target white balance state, adjusting the current input quantity of at least two of R light, G light and B light according to the difference value between the current chromaticity and the target white balance state until the current chromaticity reaches the target white balance state, and entering the step (3.2);
And (3.2) inputting the current input quantity of the RGB trichromatic light, measuring the current brightness and the current color coordinates, judging whether the current brightness reaches the target brightness and whether the current chromaticity reaches the target white balance state, stopping brightness and white balance adjustment if the current brightness reaches the target white balance state, and adjusting the current input quantity of the RGB trichromatic light according to the difference value between the current brightness and the target brightness if the current brightness does not reach the target brightness until the current brightness reaches the target brightness, and returning to the step (3.1).
In some embodiments of the present application, in step (3.1), if the target brightness and the target white balance state are not achieved, the step (3.2) is also performed after the number of updates of the current input amount exceeds the predetermined number; and/or in the step (3.2), if the target brightness and the target white balance state are not achieved, returning to the step (3.1) after the update times of the current input quantity exceeds the preset times.
In some embodiments of the present application, the number of updates of the current input amount is determined before the current input amount is updated.
In some embodiments of the present application, in the first step, the target brightness is set to L 0, and the brightness deviation is σ 0; the R color coordinate of the target is X 0, the R color coordinate deviation is σ 1, the G color coordinate of the target is Y 0, the G color coordinate deviation is σ 2, the B color coordinate of the target is Z 0, the B color coordinate deviation is σ 3, and X 0+Y0+ Z0 =1;
Step (3.1) comprises the steps of:
(3.1.1) inputting the current input amount R-input (N) of R light, the current input amount G-input (N) of G light, and the current input amount B-input (N) of B light, measuring the current luminance L 1 and the current color coordinates X 1、Y1, and judging whether |l 0-L1|<σ0 and |x 0 - X1|<σ1 and |y 0 - Y1|<σ2 are satisfied, if satisfied, stopping the luminance and white balance adjustment, and if not, proceeding to step (3.1.2);
(3.1.2) judging whether the I X 0 - X1|<σ1 and the I Y 0 - Y1|<σ2 are satisfied, if so, proceeding to the step (3.2), and if not, proceeding to the step (3.1.3);
And (3.1.3) adjusting the current input quantity of at least two of the R light, the G light and the B light according to the difference value between the current chromaticity and the target white balance state, and then returning to the step (3.1.1).
In some embodiments of the application, step (3.1.3) comprises the steps of:
(3.1.3.1) calculating the current B color coordinates: z 1=1- X1- Y1, then step (3.1.3.2);
(3.1.3.2) updating the current input amounts of the R light and the B light according to the difference between the current coordinates and the target white balance state, and then returning to the step (3.1.1).
In some embodiments of the present application, the current input amounts of R light and B light are updated according to a formula ④ and a formula ⑤, where formula ④ is R-input (n+1) =r-input (N) + (X 0 - X1) × scaleR, R-input (N) is the current input amount of R light before update, R-input (n+1) is the current input amount of R light obtained after update, scaleR is the input amount update coefficient of R light color adjustment, formula ⑤ is B-input (n+1) =b-input (N) + (Z 0- Z1) × scaleB, B-input (N) is the current input amount of B light before update, B-input (n+1) is the current input amount of B light obtained after update, and scaleB is the input amount update coefficient of B light color adjustment.
In some embodiments of the application, 1500.ltoreq. scaleR.ltoreq.2500, 1500.ltoreq. scaleB.ltoreq.2500.
In some embodiments of the application, step (3.2) comprises the steps of:
(3.2.1) inputting the current input amount R-input (N) of R light, the current input amount G-input (N) of G light, and the current input amount B-input (N) of B light, measuring the current luminance L 1 and the current color coordinates X 1、Y1, and judging whether |l 0-L1|<σ0 and |x 0 - X1|<σ1 and |y 0 - Y1|<σ2 are satisfied, if satisfied, stopping the luminance and white balance adjustment, and if not, proceeding to step (3.2.2);
(3.2.2) judging whether the |L 0-L1|<σ0 is satisfied, if so, returning to the step (3.1), and if not, entering the step (3.2.3);
(3.2.3) adjusting the current input quantity of the RGB trichromatic light according to the difference value between the current brightness and the target brightness, and then returning to the step (3.2.1).
In some embodiments of the present application, in step (3.2.3), the current input amounts of R light, G light and B light are updated according to formulas ⑥, ⑦ and ⑧, where formula ⑥ is R-input (n+1) =r-input (N) + (L 0- L1) × scaleRR, R-input (N) is the current input amount of R light before update, R-input (n+1) is the current input amount of R light obtained after update, scaleRR is the input amount update coefficient of R light brightness adjustment; formula ⑦ is G-input (n+1) =g-input (N) + (L 0- L1) × scaleGG, G-input (N) is a current input of G light before update, G-input (n+1) is a current input of G light obtained after update, scaleGG is an input update coefficient of G light brightness adjustment; equation ⑧ is B-input (n+1) =b-input (N) + (L 0- L1) × scaleBB, B-input (N) is the current input of B light before update, B-input (n+1) is the current input of B light obtained after update, scaleBB is the input update coefficient of B light brightness adjustment.
In some embodiments of the application, 300.ltoreq. scaleRR.ltoreq.320, 290.ltoreq. scaleGG.ltoreq.310, 600.ltoreq. scaleBB.ltoreq.660.
According to another aspect of the present application, there is also provided an image display apparatus including:
At least one processor;
A memory communicatively coupled to the at least one processor, the memory storing instructions executable by the at least one processor to enable the at least one processor to perform the steps of the brightness and white balance adjustment method of an image as previously described.
Further objects and advantages of the present application will become fully apparent from the following description and the accompanying drawings.
These and other objects, features and advantages of the present application will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.
Drawings
Fig. 1 is a flow chart of a method of adjusting brightness and white balance of an image in some embodiments of the application.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the application. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the application defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the application.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present application.
In the present application, the terms "a" and "an" in the claims and specification should be understood as "one or more", i.e. in one embodiment the number of one element may be one, while in another embodiment the number of the element may be plural. The terms "a" and "an" are not to be construed as unique or singular, and the term "the" and "the" are not to be construed as limiting the amount of the element unless the amount of the element is specifically indicated as being only one in the disclosure of the present application.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through a medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In the formula ①-⑧ of the present application, in order to facilitate discrimination, the suffix (N) represents the input amount before updating in the present cycle, the suffix (n+1) represents the input amount obtained after updating in the present cycle, and the input amount obtained after updating in the present cycle is the current input amount in the next execution step returned, that is, the input amount before updating in the next cycle is executed. In other words, the subscript (N) and the subscript (n+1) are only used for distinguishing the input amounts before and after updating in a certain cycle, and the numerical values of the input amounts corresponding to the two subscripts are updated in real time along with the step cycle of each cycle. Taking the update of the current input amount of the G light in the second step as an example, when the step (2.4) is executed for the first time, the current input amount of the G light is updated from the G-input (1) to the G-input (2), then when the step (2.2) is returned, the current input amount of the G light is the G-input (2), and when the step (2.4) is executed for the second time, the current input amount of the G light is updated from the G-input (2) to the G-input (3), and the cycle is repeated.
In the prior art, the adjustment of brightness and white balance of an image is generally realized by controlling the ratio of three primary colors of Red (Red), green (Green) and Blue (Blue) in an image display device, specifically, the adjustment of the input voltage or the input current of an RGB lamp to adjust the light intensity and color coordinates.
Moreover, in the prior art, brightness and white balance adjustment of an image are performed separately, that is, brightness is adjusted first and then white balance is adjusted, or brightness is adjusted first and then white balance is adjusted. Since the input amounts of brightness and white balance are the same, separate adjustment of brightness and white balance may cause the adjustment of the subsequent index to affect the previously adjusted index, for example, the brightness is adjusted first, then the white balance is adjusted, the input amount corresponding to the RGB lamp after the brightness is adjusted may not meet the requirement of white balance, and then the input amount corresponding to the RGB lamp after the white balance is adjusted may be changed, so that the brightness requirement is not met, thereby affecting the image quality displayed by the image display device.
Based on the above, the application provides a brightness and white balance adjusting method of an image, which sequentially comprises the following steps:
Step one, setting target brightness and target white balance state of an RGB three-color light source;
Step two, setting an initial input quantity of RGB trichromatic light, wherein the input quantity is current or voltage or gear;
Step three, the current input quantity of RGB trichromatic light is input, the current brightness and the current color coordinates are measured, whether the current brightness reaches the target brightness and whether the current chromaticity reaches the target white balance state are judged, if not, the current input quantity of RGB trichromatic light is adjusted according to the difference value between the current brightness and the target brightness and/or the difference value between the current chromaticity and the target white balance state until the current brightness reaches the target brightness and the current chromaticity reaches the target white balance state.
According to the application, whether the current brightness and the current color coordinate reach the preset target or not is judged, and the current input quantity of the RGB trichromatic light is adjusted according to the difference value between the current brightness and the target brightness and/or the difference value between the current chromaticity and the target white balance state.
Further, in the first step, the target brightness is set to L 0, and the brightness deviation is σ 0; the target R color coordinate is X 0, the R color coordinate deviation is σ 1, the target G color coordinate is Y 0, the G color coordinate deviation is σ 2, the target B color coordinate is Z 0, the B color coordinate deviation is σ 3, and X 0+Y0+ Z0 =1.
Further, in some embodiments of the present application, in the second step, the initial input amount of the RGB trichromatic light may be set at will, and then step three is entered, so that the difference between the current luminance and the target luminance and the difference between the current chromaticity and the target white balance state are larger, and multiple adjustments of the luminance and the white balance state may be required, resulting in longer time consumption for adjusting the luminance and the white balance.
Further, in other embodiments of the present application,
In the second step, the initial input amount of RGB trichromatic light is set as follows steps (2.1) to (2.4):
(2.1) setting the target luminance of the G light to L 2, and the target luminance deviation of the G light to σ 4; setting the current input quantity of G light as G-input (N), wherein N is a positive integer; setting the conversion relation of the R light input quantity and the G light input quantity as a scaleGR, setting the conversion relation of the B light input quantity and the G light input quantity as scaleGB, and then entering the step (2.2);
(2.2) inputting only the current input amount G-input (N) of the G light, and measuring the current brightness L 3, and then proceeding to step (2.3);
(2.3) judging whether the I L 2-L3|<σ4 is met, if yes, stopping the initial input quantity adjustment of RGB trichromatic light, setting the current input quantity G-input (N) of G light as the initial input quantity of G light, calculating the initial input quantity R-input (N) of R light and the initial input quantity B-input (N) of B light according to the conversion relation of R light input quantity and G light input quantity scaleGR, the conversion relation of B light input quantity and G light input quantity scaleGB, and if not, entering the step (2.4);
(2.4) updating the current input amount of the G light according to the difference between the current brightness L 3 and the G light target brightness L 2, and then returning to step (2.2).
Because the brightness is more visual relative to the chromaticity, the initial input quantity of the RGB trichromatic light is firstly shifted by the brightness, and compared with the method for randomly setting the initial input quantity of the RGB trichromatic light to execute the step III, the method can enable the initial input quantity of the RGB trichromatic light to be more close to the input quantity of the target brightness, thereby reducing the times of brightness and white balance adjustment and shortening the time of brightness and white balance adjustment.
Further, in step (2.4), the input of the G light is updated according to the formula ③, where the formula ③ is G-input (n+1) =g-input (N) + (L 2-L3) × scaleG, where G-input (N) is the current input of the G light before update, G-input (n+1) is the current input of the G light obtained after update, scaleG is the input update coefficient of the G light when setting the initial input, and the update manner of the G light input can be simplified by the formula ③, so that the initial input determination of the G light is simpler.
Further, in the formula ③, 200.ltoreq. scaleG.ltoreq.400, the change of the G light input amount can be avoided from being too fast or too slow, so that the G light input amount can be prevented from deviating from the target brightness too much, the update times of the G light input amount can be reduced, and the update time of the G light input amount can be shortened.
Further, in the step (2.1) and the step (2.3), the conversion relations of the R light input amount and the G light input amount are the ratios, and the conversion relations of the B light input amount and the G light input amount scaleGB are the ratios, so that the conversion of the R light input amount and the G light input amount and the conversion of the B light input amount and the G light input amount can be simplified, and the acquisition of the R light input amount and the acquisition of the B light input amount can be faster.
Further, 1-scaleGR-1.2,2-scaleGB-2.2.
After the initial input amount of the RGB three-color light is determined in the second step, the process proceeds to the third step to adjust the current luminance and chromaticity. Specifically, the third step includes the following steps:
(3.1) inputting current input quantity of RGB trichromatic light, measuring current brightness and current color coordinates, judging whether the current brightness reaches target brightness and whether the current chromaticity reaches target white balance state, stopping brightness and white balance adjustment if the current brightness reaches the target white balance state, and if the current brightness does not reach the target white balance state, adjusting the current input quantity of at least two of R light, G light and B light according to the difference value between the current chromaticity and the target white balance state until the current chromaticity reaches the target white balance state, and entering the step (3.2);
And (3.2) inputting the current input quantity of the RGB trichromatic light, measuring the current brightness and the current color coordinates, judging whether the current brightness reaches the target brightness and whether the current chromaticity reaches the target white balance state, stopping brightness and white balance adjustment if the current brightness reaches the target white balance state, and adjusting the current input quantity of the RGB trichromatic light according to the difference value between the current brightness and the target brightness if the current brightness does not reach the target brightness until the current brightness reaches the target brightness, and returning to the step (3.1).
Since the initial input amounts of the three colors of RGB are determined by the luminance in the second step, the current input amounts of the three colors of RGB can be made closer to the target luminance and the target white balance state by following the order of adjusting the chromaticity and then the luminance in the third step, so that the time for luminance and white balance adjustment can be shortened, and whether the target luminance and the target white balance state are reached or not is judged first between each chromaticity adjustment and luminance adjustment, so that the probability of judgment errors can be reduced, the number of times of adjusting the current input amounts can be reduced, and the adjustment of luminance and white balance can be completed more quickly.
Considering that the judgment of the brightness and the white balance state may have errors, and the target state still cannot be reached after multiple times of adjustment may also occur, therefore, in the step (3.1), if the target brightness and the target white balance state are not reached, the step (3.2) is also performed after the update times of the current input quantity exceeds the preset times; and/or in the step (3.2), if the target brightness and the target white balance state are not achieved, returning to the step (3.1) after the update times of the current input quantity exceeds the preset times, so that the current input quantity is prevented from being updated too frequently in the current regulation state when the chromaticity regulation or the brightness regulation is carried out by limiting the update times of the current input quantity in the chromaticity regulation and/or the update times of the current input quantity in the brightness regulation, and the other regulation state can be entered more quickly, so that the progress of the brightness and the white balance regulation can be accelerated. The predetermined number of times may be set according to practical situations, for example, 15 to 50 times.
Further, the updated number of times of the current input amount is judged before the current input amount is updated, so that the updated number of times of the current input amount of the RGB three-color light can be reduced, and the time for adjusting the brightness and the white balance can be shortened.
If the brightness and the chromaticity are judged to not reach the target state, the brightness and the chromaticity are required to be separately adjusted, but the sequence of brightness adjustment and chromaticity adjustment is required to be further judged, so the step (3.1) comprises the following steps:
(3.1.1) inputting the current input amount R-input (N) of R light, the current input amount G-input (N) of G light, and the current input amount B-input (N) of B light, measuring the current luminance L 1 and the current color coordinates X 1、Y1, and judging whether |l 0-L1|<σ0 and |x 0- X1|<σ1 and |y 0 - Y1|<σ2 are satisfied, if satisfied, stopping the luminance and white balance adjustment, and if not, proceeding to step (3.1.2);
(3.1.2) judging whether the I X 0-X1|<σ1 and the I Y 0-Y1|<σ2 are satisfied, if so, proceeding to the step (3.2), and if not, proceeding to the step (3.1.3);
And (3.1.3) adjusting the current input quantity of at least two of the R light, the G light and the B light according to the difference value between the current chromaticity and the target white balance state, and then returning to the step (3.1.1).
The reason that the target brightness and the target white balance state are not reached is determined through further judgment of the chromaticity, so that the sequence of brightness adjustment and white balance adjustment is determined, and the update times of the current input quantity are reduced.
Since the initial input amounts of the R light and the B light are determined by the initial input amounts of the G light in the second step, the current input amount of the G light is defaulted to be a white balance state closer to the target, and at this time, the number of times of adjustment of the current input amount can also be reduced by adjusting the white balance by updating only the current input amounts of the R light and the B light. Specifically, further, the step (3.1.3) includes the steps of:
(3.1.3.1) calculating the current B color coordinates: z 1=1- X1- Y1, then step (3.1.3.2);
(3.1.3.2) updating the current input amounts of the R light and the B light according to the difference between the current coordinates and the target white balance state, and then returning to the step (3.1.1).
Further, in step (3.1.3.2), the current input amounts of R light and B light are updated according to the formula ④ and the formula ⑤, where the formula ④ is R-input (n+1) =r-input (N) + (X 0 - X1) × scaleR, scaleR is an input amount update coefficient for R light color adjustment, R-input (N) is an R light current input amount before update, R-input (n+1) is an R light current input amount obtained after update, the formula ⑤ is B-input (n+1) =b-input (N) + (Z 0- Z1) × scaleB, B-input (N) is a B light current input amount obtained after update, and scaleB is an input amount update coefficient for light color adjustment.
The updating mode of the current input quantity of the R light and the B light can be simplified through the formula ④ and the formula ⑤, so that the determination of the current input quantity of the R light and the B light is simpler.
Further, 1500 is less than or equal to scaleR and less than or equal to 2500, 1500 is less than or equal to scaleB and less than or equal to 2500, the current input quantity of R light and the current input quantity of B light can be prevented from changing too fast or too slow, the color coordinates deviate from the target white balance state too much, the update times of the current input quantity of RGB three-color light can be further reduced, and the update time of the current input quantity of RGB three-color light is shortened.
After the chromaticity is adjusted, the brightness is required to be adjusted, and the step (3.2) comprises the following steps:
(3.2.1) inputting the current input amount R-input (N) of R light, the current input amount G-input (N) of G light, and the current input amount B-input (N) of B light, measuring the current luminance L 1 and the current color coordinates X 1、Y1, and judging whether |l 0-L1|<σ0 and |x 0 - X1|<σ1 and |y 0 - Y1|<σ2 are satisfied, if satisfied, stopping the luminance and white balance adjustment, and if not, proceeding to step (3.2.2);
(3.2.2) judging whether the |L 0-L1|<σ0 is satisfied, if so, returning to the step (3.1), and if not, entering the step (3.2.3);
(3.2.3) adjusting the current input quantity of the RGB trichromatic light according to the difference value between the current brightness and the target brightness, and then returning to the step (3.2.1).
The reason that the target brightness and the target white balance state are not reached is determined through further judgment of the brightness, so that the sequence of brightness adjustment and white balance adjustment is determined, and the adjustment times of the current input quantity are reduced.
Further, in step (3.2.3), the current input amounts of R light, G light and B light are updated according to formulas ⑥, ⑦ and ⑧, where formula ⑥ is R-input (n+1) =r-input (N) + (L 0- L1) × scaleRR, R-input (N) is the current input amount of R light before update, R-input (n+1) is the current input amount of R light obtained after update, and scaleRR is the input amount update coefficient of R light brightness adjustment; formula ⑦ is G-input (n+1) =g-input (N) + (L 0- L1) × scaleGG, scaleGG is an input quantity update coefficient for G light brightness adjustment, G-input (N) is a current input quantity of G light before update, and G-input (n+1) is a current input quantity of G light obtained after update;
Equation ⑧ is B-input (n+1) =b-input (N) + (L 0- L1) × scaleBB, B-input (N) is the current input of B light before update, B-input (n+1) is the current input of B light obtained after update, scaleBB is the input update coefficient of B light brightness adjustment.
The updating mode of the current input quantity of the R light and the B light can be simplified through the formula ⑥, the formula ⑦ and the formula ⑧, so that the determination of the current input quantity of the R light and the B light is simpler.
Further, 300-scaleRR-320, 290-scaleGG-310, 600-scaleBB-660, the current input quantity of RGB three-color light can be prevented from changing too fast or too slow, the brightness is prevented from deviating from the target brightness too much, the update times of the current input quantity of RGB three-color light can be further reduced, and the update time of the current input quantity of RGB three-color light is shortened.
In some embodiments of the present application, there is also provided an image display apparatus including: at least one processor; a memory communicatively coupled to the at least one processor, the memory storing instructions executable by the at least one processor to enable the at least one processor to perform the steps of the brightness and white balance adjustment method of an image as previously described.
The image display device may be at least one of a television, a smart phone, a tablet computer, a smart watch, a virtual reality device, an augmented reality device, and a mixed reality device.
Example 1
Referring to fig. 1, the brightness and white balance adjustment method of the image in the present embodiment includes the steps of:
S1, setting a target luminance L 0 =2 Luminous, and a luminance deviation σ 0 =0.06; target R color coordinate X 0 =0.329, R color coordinate deviation σ 1 =0.01, target G color coordinate Y 0 =0.313, G color coordinate deviation σ 2 =0.01, target B color coordinate Z 0=1-X0-Y0 =0.358, B color coordinate deviation σ 3 =0.02, and then step S2 is entered.
S2, setting the luminance ratio of the G light to SCALEWHITEG =0.7, and setting the target luminance L 2=L0 of the G light to SCALEWHITEG =1.4 and the target luminance deviation σ 4 of the G light to 0.02; setting the current input quantity of G light as a gear, and G-input (N) =420, wherein N is a positive integer; setting a conversion ratio scaleGR =1.1 of the R light input amount to the G light input amount, and a conversion ratio scaleGB =2.1 of the B light input amount to the G light input amount, and then proceeding to step S3;
s3, inputting the current input quantity G-input (N) of G light, measuring the current brightness L 1 by adopting a brightness colorimeter, and then entering step S4;
S4, judging whether I1.4-L 1 I <0.02 is met, if yes, stopping the initial input quantity adjustment of RGB three-color light, setting the current input quantity G-input (N) of G light as the initial input quantity of G light, calculating the initial input quantity of R light and the initial input quantity of B light according to a formula ① and a formula ②, then entering a step S6, if not, entering a step S5,
Wherein, formula ① is R-input (N) =g-input (N) ×1.1;
Equation ② is B-input (N) =g-input (N) ×2.1.
S5, the current input quantity of G light is updated according to a formula ③, and then the step S3 is returned, wherein,
Equation ③ is G-input (n+1) =g-input (N) + (1.4-L 1) ×250, and 250 is the input quantity update coefficient scaleG of the G light when the initial input quantity is set.
S6, the current input quantity R-input (N) of the input R light, the current input quantity G-input (N) of the G light and the current input quantity B-input (N) of the B light are measured by adopting a luminance colorimeter, the current luminance L 1 and the current color coordinate X 1、Y1 are measured, whether the absolute value of absolute value 2-L 1 is smaller than 0.06 and the absolute value of absolute value 0.329-X 1 is smaller than 0.01 and the absolute value of absolute value 0.313-Y 1 is smaller than 0.01 is judged, if yes, the luminance and white balance adjustment is stopped, and if not, the step S7 is carried out;
S7, judging whether the absolute values of 0.329-X 1 and 0.01 are equal to or smaller than 0.01 and 0.313-Y 1 are equal to or smaller than 0.01, if yes, entering a step S11, and if not, entering a step S8;
s8, judging whether the executed times of the step S10 exceeds 30 times, if not, entering the step S9, and if so, entering the step S11;
s9, calculating the B light color coordinates: z 1=1- X1- Y1, then step S10;
S10, updating the current input amounts of R light and B light according to a formula ④ and a formula ⑤, and returning to step S6, where formula ④ is R-input (n+1) =r-input (N) + (0.329-X 1) ×2300, 2300 is an input amount update coefficient scaleR of R light color adjustment;
equation ⑤ is B-input (n+1) =b-input (N) + (0.358-Z 1) ×1800, 1800 being the input update factor scaleB for B-color adjustment.
S11, measuring current brightness L 1 and current color coordinates X 1、Y1 by using a colorimeter, judging whether current input quantity R-input (N) of R light, current input quantity G-input (N) of G light and current input quantity B-input (N) of B light are met or not, and if not, entering step S12, wherein I2-L 1 I <0.06, I0.329-X 1 I <0.01 and I0.313-Y 1 I <0.01 are met;
S12, judging whether |2-L 1 | <0.06 is met, if yes, returning to the step S6, and if not, entering the step S13;
s13, judging whether the executed times of the step S14 exceeds 30 times, if not, entering the step S14, and if so, returning to the step S6;
S14, updating the current input amounts of R light, G light and B light according to the formula ⑥, the formula ⑦ and the formula ⑧, and returning to the step S11, wherein the formula ⑥ is R-input (n+1) =r-input (N) + (2-L 1) ×320, and 320 is an input amount update coefficient scaleRR for R-luminance adjustment;
Equation ⑦ is G-input (n+1) =g-input (N) + (2-L 1) ×290, 290 is the input update coefficient scaleGG for G brightness adjustment;
Equation ⑧ is B-input (n+1) =b-input (N) + (2-L 1) ×630, 630 is the input update factor scaleBB for B-luminance adjustment.
Example 2
Referring to fig. 1, the brightness and white balance adjustment method of the image in the present embodiment includes the steps of:
S1, setting a target luminance L 0 =1.4 Luminous, and a luminance deviation σ 0 =0.04; target R color coordinate X 0 =0.295, R color coordinate deviation σ 1 =0.005, target G color coordinate Y 0 =0.373, G color coordinate deviation σ 2 =0.005, target B color coordinate Z 0=1-X0-Y0 =0.332, B color coordinate deviation σ 3 =0.01, and then step S2 is entered.
S2, setting the luminance ratio of the G light to SCALEWHITEG =0.6, the target luminance L 2=L0 of the G light is SCALEWHITEG =0.84, and the luminance deviation σ 4 of the G light is 0.005; setting the current input quantity of G light as a gear, and G-input (N) =210, wherein N is a positive integer; setting a conversion ratio scaleGR =1.2 of the R light input amount to the G light input amount, and a conversion ratio scaleGB =2.2 of the B light input amount to the G light input amount, and then proceeding to step S3;
s3, inputting the current input quantity G-input (N) of G light, measuring the current brightness L 1 by adopting a brightness colorimeter, and then entering step S4;
s4, judging whether the absolute value of 0.84-L 1 is smaller than the absolute value of 0.005, if so, stopping the initial input quantity adjustment of RGB three-color light, setting the current input quantity G-input (N) of G light as the initial input quantity of G light, calculating the initial input quantity of R light and the initial input quantity of B light according to a formula ① and a formula ②, then entering a step S6, if not, entering a step S5,
Wherein, formula ① is R-input (N) =g-input (N) ×1.2;
Equation ② is B-input (N) =g-input (N) ×2.2.
S5, the current input quantity of G light is updated according to a formula ③, and then the step S3 is returned, wherein,
Equation ③ is G-input (n+1) =g-input (N) + (0.84-L 1) ×300, and 300 is the input quantity update coefficient scaleG of the G light when the initial input quantity is set.
S6, the current input quantity R-input (N) of the input R light, the current input quantity G-input (N) of the G light and the current input quantity B-input (N) of the B light are measured by adopting a luminance colorimeter, the current luminance L 1 and the current color coordinate X 1、Y1 are measured, whether the absolute value of absolute value 1.4-L 1 is smaller than 0.04 and the absolute value of absolute value 0.295-X 1 is smaller than 0.005 and the absolute value of absolute value 0.373-Y 1 is smaller than 0.005 is judged, if yes, the luminance and white balance adjustment is stopped, and if not, the step S7 is carried out;
S7, judging whether the absolute value of 0.295-X 1 is smaller than 0.005 and the absolute value of 0.373-Y 1 is smaller than 0.005, if yes, entering a step S11, and if not, entering a step S8;
s8, judging whether the executed times of the step S10 exceeds 20 times, if not, entering the step S9, and if so, entering the step S11;
S9, calculating the B light color coordinates: z 0=1- X1- Y1, then step S10;
S10, updating the current input quantity of R light and B light according to a formula ④ and a formula ⑤, and returning to the step S6, wherein the formula ④ is R-input (N+1) =R-input (N) + (0.295-X 1) ×1900, and 1900 is an input quantity update coefficient scaleR of R light color adjustment;
Equation ⑤ is B-input (n+1) =b-input (N) + (0.332-CurrentB) ×2500, 2500 being the input update factor scaleB for B-color adjustment.
S11, measuring current brightness L 1 and current color coordinates X 1、Y1 by using a colorimeter, judging whether the current input quantity R-input (N) of R light, the current input quantity G-input (N) of G light and the current input quantity B-input (N) of B light are met or not, and judging whether the current brightness L 1 and the current color coordinates X 1、Y1 are met or not, if not, entering step S12, wherein the current brightness L 1 and the current color coordinates X 1、Y1 are met, and the current brightness L is judged to be met, and the current brightness L is 0.4-L 1 and the current brightness is 0.04-X 1 and the current brightness is 0.373-Y 1.
S12, judging whether the absolute value of 1.4-L 1 is smaller than 0.04, if yes, returning to the step S6, and if not, entering the step S13;
S13, judging whether the executed times of the step S14 exceeds 20 times, if not, entering the step S14, and if so, returning to the step S6;
S14, updating the current input amounts of R light, G light and B light according to formulas ⑥, ⑦ and ⑧, and returning to step S11, where formula ⑥ is R-input (n+1) =r-input (N) + (1.4-L 1) ×310, 310 is an input amount update coefficient scaleRR for R light brightness adjustment;
Equation ⑦ is G-input (n+1) =g-input (N) + (1.4-L 1) ×300, 300 is the input update factor scaleGG for G brightness adjustment;
Equation ⑧ is B-input (n+1) =b-input (N) + (1.4-L 1) ×610, 610 is the input update factor scaleBB for B-luminance adjustment.
It will be appreciated by persons skilled in the art that the embodiments of the application described above and shown in the drawings are by way of example only and are not limiting. The objects of the present application have been fully and effectively achieved. The functional and structural principles of the present application have been shown and described in the examples and embodiments of the application may be modified or practiced without departing from the principles described.
Claims (15)
1. The brightness and white balance adjusting method of the image is characterized by comprising the following steps in sequence:
Step one, setting target brightness and target white balance state of an RGB three-color light source;
Step two, setting an initial input quantity of RGB trichromatic light, wherein the input quantity is current or voltage or gear;
Step three, inputting the current input quantity of RGB trichromatic light, measuring the current brightness and current color coordinates,
Judging whether the current brightness reaches the target brightness and the current chromaticity reaches the target white balance state,
If not, the current input quantity of RGB trichromatic light is adjusted according to the difference value between the current brightness and the target brightness and/or the difference value between the current chromaticity and the target white balance state,
Until the current brightness reaches the target brightness and the current chromaticity reaches the target white balance state;
in the second step, the initial input amount of the RGB trichromatic light is set according to the following steps (2.1) to (2.4):
(2.1) setting the target luminance of the G light to L 2, and the target luminance deviation of the G light to σ 4; setting the current input quantity of G light as G-input (N), wherein N is a positive integer; setting the conversion relation of the R light input quantity and the G light input quantity as a scaleGR, setting the conversion relation of the B light input quantity and the G light input quantity as scaleGB, and then entering the step (2.2);
(2.2) inputting only the current input amount G-input (N) of the G light, and measuring the current brightness L 3, and then proceeding to step (2.3);
(2.3) judging whether the I L 2-L3|<σ4 is met, if yes, stopping the initial input quantity adjustment of RGB trichromatic light, setting the current input quantity G-input (N) of G light as the initial input quantity of G light, calculating the initial input quantity R-input (N) of R light and the initial input quantity B-input (N) of B light according to the conversion relation of R light input quantity and G light input quantity scaleGR, the conversion relation of B light input quantity and G light input quantity scaleGB, and if not, entering the step (2.4);
(2.4) updating the current input amount of the G light according to the difference between the current brightness L 3 and the G light target brightness L 2, and then returning to the step (2.2); in step (2.4), the input amount of G light is updated according to a formula ③, wherein a formula ③ is
G-input (n+1) =g-input (N) + (L 2-L3) × scaleG, where G-input (N) is a current input of G light before update, G-input (n+1) is a current input of G light obtained after update, and scaleG is an input update coefficient of G light when setting an initial input.
2. The method of adjusting brightness and white balance of an image according to claim 1, wherein 200.ltoreq. scaleG.ltoreq.400 in the formula ③.
3. The method of claim 1, wherein in the step (2.1) and the step (2.3), the conversion relations of R light input amount and G light input amount are ratios of scaleGR, B light input amount and G light input amount scaleGB.
4. The method for adjusting the brightness and white balance of an image according to claim 3, wherein 1.ltoreq. scaleGR.ltoreq. 1.2,2.ltoreq. scaleGB.ltoreq.2.2.
5. The brightness and white balance adjustment method of an image according to any one of claims 1 to 4, characterized in that step three comprises the steps of:
(3.1) inputting current input quantity of RGB trichromatic light, measuring current brightness and current color coordinates, judging whether the current brightness reaches target brightness and whether the current chromaticity reaches target white balance state, stopping brightness and white balance adjustment if the current brightness reaches the target white balance state, and if the current brightness does not reach the target white balance state, adjusting the current input quantity of at least two of R light, G light and B light according to the difference value between the current chromaticity and the target white balance state until the current chromaticity reaches the target white balance state, and entering the step (3.2);
And (3.2) inputting the current input quantity of the RGB trichromatic light, measuring the current brightness and the current color coordinates, judging whether the current brightness reaches the target brightness and whether the current chromaticity reaches the target white balance state, stopping brightness and white balance adjustment if the current brightness reaches the target white balance state, and adjusting the current input quantity of the RGB trichromatic light according to the difference value between the current brightness and the target brightness if the current brightness does not reach the target brightness until the current brightness reaches the target brightness, and returning to the step (3.1).
6. The method according to claim 5, wherein in step (3.1), if the target brightness and the target white balance state are not achieved, the step (3.2) is also performed after the number of updates of the current input amount exceeds a predetermined number; and/or in the step (3.2), if the target brightness and the target white balance state are not achieved, returning to the step (3.1) after the update times of the current input quantity exceeds the preset times.
7. The method for adjusting brightness and white balance of an image according to claim 6, wherein the updated number of times of the current input amount is judged before the current input amount is updated.
8. The method according to claim 5, wherein in the first step, the target luminance is set to L 0 and the luminance deviation is set to σ 0; the R color coordinate of the target is X 0, the R color coordinate deviation is σ 1, the G color coordinate of the target is Y 0, the G color coordinate deviation is σ 2, the B color coordinate of the target is Z 0, the B color coordinate deviation is σ 3, and X 0+Y0+ Z0 =1;
Step (3.1) comprises the steps of:
(3.1.1) inputting the current input amount R-input (N) of R light, the current input amount G-input (N) of G light, and the current input amount B-input (N) of B light, measuring the current luminance L 1 and the current color coordinates X 1、Y1, and judging whether |l 0-L1|<σ0 and |x 0 - X1|<σ1 and |y 0 - Y1|<σ2 are satisfied, if satisfied, stopping the luminance and white balance adjustment, and if not, proceeding to step (3.1.2);
(3.1.2) judging whether the I X 0 - X1|<σ1 and the I Y 0 - Y1|<σ2 are satisfied, if so, proceeding to the step (3.2), and if not, proceeding to the step (3.1.3);
And (3.1.3) adjusting the current input quantity of at least two of the R light, the G light and the B light according to the difference value between the current chromaticity and the target white balance state, and then returning to the step (3.1.1).
9. The method of adjusting brightness and white balance of an image according to claim 8, wherein the step (3.1.3) comprises the steps of:
(3.1.3.1) calculating the current B color coordinates: z 1=1- X1- Y1, then step (3.1.3.2);
(3.1.3.2) updating the current input amounts of the R light and the B light according to the difference between the current coordinates and the target white balance state, and then returning to the step (3.1.1).
10. The method according to claim 9, wherein the current input amounts of R light and B light are updated according to a formula ④ and a formula ⑤, wherein the formula ④ is R-input (n+1) =r-input (N) + (X 0 - X1) × scaleR, R-input (N) is the current input amount of R light before update, R-input (n+1) is the current input amount of R light obtained after update, scaleR is an input amount update coefficient of R light color adjustment, the formula ⑤ is B-input (n+1) =b-input (N) + (Z 0- Z1) = scaleB, B-input (N) is the current input amount of B light before update, B-input (n+1) is the current input amount of B light obtained after update, and scaleB is an input amount update coefficient of B light color adjustment.
11. The method of claim 10, wherein 1500.ltoreq. scaleR.ltoreq.2500, 1500.ltoreq. scaleB.ltoreq.2500 for brightness and white balance adjustment of an image.
12. The method of adjusting brightness and white balance of an image according to claim 5, wherein the step (3.2) comprises the steps of:
(3.2.1) inputting the current input amount R-input (N) of R light, the current input amount G-input (N) of G light, and the current input amount B-input (N) of B light, measuring the current luminance L 1 and the current color coordinates X 1、Y1, and judging whether |l 0-L1|<σ0 and |x 0 - X1|< σ1 and |y 0 - Y1|<σ2 are satisfied, if satisfied, stopping the luminance and white balance adjustment, and if not, proceeding to step (3.2.2);
(3.2.2) judging whether the |L 0-L1|<σ0 is satisfied, if so, returning to the step (3.1), and if not, entering the step (3.2.3);
(3.2.3) adjusting the current input quantity of the RGB trichromatic light according to the difference value between the current brightness and the target brightness, and then returning to the step (3.2.1).
13. The method according to claim 12, wherein in the step (3.2.3), the current input amounts of R light, G light and B light are updated according to formulas ⑥, ⑦ and ⑧, wherein formula ⑥ is R-input (n+1) =r-input (N) + (L 0- L1) × scaleRR, R-input (N) is the current input amount of R light before update, R-input (n+1) is the current input amount of R light obtained after update, and scaleRR is the input amount update coefficient of R light brightness adjustment; formula ⑦ is G-input (n+1) =g-input (N) + (L 0- L1) × scaleGG, G-input (N) is a current input of G light before update, G-input (n+1) is a current input of G light obtained after update, scaleGG is an input update coefficient of G light brightness adjustment; equation ⑧ is B-input (n+1) =b-input (N) + (L 0- L1) × scaleBB, B-input (N) is the current input of B light before update, B-input (n+1) is the current input of B light obtained after update, scaleBB is the input update coefficient of B light brightness adjustment.
14. The method of claim 13, wherein 300-scaleRR-320, 290-scaleGG-310, 600-scaleBB-660.
15. An image display apparatus, characterized by comprising:
At least one processor;
A memory communicatively coupled to the at least one processor, the memory storing instructions executable by the at least one processor to enable the at least one processor to perform the steps of the image brightness and white balance adjustment method of any one of claims 1 to 14.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984042A (en) * | 1995-09-13 | 1997-03-28 | Matsushita Electric Ind Co Ltd | Automatic white balance adjustment device |
| JP2006163069A (en) * | 2004-12-08 | 2006-06-22 | Sanyo Electric Co Ltd | Signal processing circuit and signal processing method for self-luminous display device |
| TW200917854A (en) * | 2007-10-05 | 2009-04-16 | Himax Display Inc | White balance method |
| JP2012143464A (en) * | 2011-01-13 | 2012-08-02 | Hoya Corp | White balance adjustment system and endoscope processor |
| CN103227928A (en) * | 2013-03-29 | 2013-07-31 | 华为技术有限公司 | White balance adjusting method and device |
| CN103402103A (en) * | 2013-07-25 | 2013-11-20 | 上海富瀚微电子有限公司 | Self-adaptive white balance starting speed control method and device |
| CN104392696A (en) * | 2014-12-01 | 2015-03-04 | 苏州立瓷电子技术有限公司 | White balance adjusting method of LED display screen |
| CN105306917A (en) * | 2015-10-22 | 2016-02-03 | 深圳市华星光电技术有限公司 | Low gray scale white balance control method and control system and displayer |
| CN107155098A (en) * | 2017-04-12 | 2017-09-12 | 深圳Tcl数字技术有限公司 | White balance parameter method of adjustment and device |
| CN109980499A (en) * | 2019-04-15 | 2019-07-05 | 北京镭创高科光电科技有限公司 | The white balance adjusting method and system of RGB laser light source |
| CN110233971A (en) * | 2019-07-05 | 2019-09-13 | Oppo广东移动通信有限公司 | A kind of image pickup method and terminal, computer readable storage medium |
| CN110267022A (en) * | 2019-06-28 | 2019-09-20 | 成都极米科技股份有限公司 | White balance correcting, the apparatus and system of projection arrangement |
| CN115035851A (en) * | 2022-08-10 | 2022-09-09 | 深圳精智达技术股份有限公司 | Gamma white balance rapid adjustment method and related device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100922042B1 (en) * | 2008-02-28 | 2009-10-19 | 삼성모바일디스플레이주식회사 | Luminance correction system and luminance correction algorithm |
| JP6873688B2 (en) * | 2016-12-27 | 2021-05-19 | キヤノン株式会社 | Image processing equipment and image processing methods, imaging equipment, programs |
-
2024
- 2024-04-03 CN CN202410399505.3A patent/CN117998070B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984042A (en) * | 1995-09-13 | 1997-03-28 | Matsushita Electric Ind Co Ltd | Automatic white balance adjustment device |
| JP2006163069A (en) * | 2004-12-08 | 2006-06-22 | Sanyo Electric Co Ltd | Signal processing circuit and signal processing method for self-luminous display device |
| TW200917854A (en) * | 2007-10-05 | 2009-04-16 | Himax Display Inc | White balance method |
| JP2012143464A (en) * | 2011-01-13 | 2012-08-02 | Hoya Corp | White balance adjustment system and endoscope processor |
| CN103227928A (en) * | 2013-03-29 | 2013-07-31 | 华为技术有限公司 | White balance adjusting method and device |
| CN103402103A (en) * | 2013-07-25 | 2013-11-20 | 上海富瀚微电子有限公司 | Self-adaptive white balance starting speed control method and device |
| CN104392696A (en) * | 2014-12-01 | 2015-03-04 | 苏州立瓷电子技术有限公司 | White balance adjusting method of LED display screen |
| CN105306917A (en) * | 2015-10-22 | 2016-02-03 | 深圳市华星光电技术有限公司 | Low gray scale white balance control method and control system and displayer |
| CN107155098A (en) * | 2017-04-12 | 2017-09-12 | 深圳Tcl数字技术有限公司 | White balance parameter method of adjustment and device |
| CN109980499A (en) * | 2019-04-15 | 2019-07-05 | 北京镭创高科光电科技有限公司 | The white balance adjusting method and system of RGB laser light source |
| CN110267022A (en) * | 2019-06-28 | 2019-09-20 | 成都极米科技股份有限公司 | White balance correcting, the apparatus and system of projection arrangement |
| CN110233971A (en) * | 2019-07-05 | 2019-09-13 | Oppo广东移动通信有限公司 | A kind of image pickup method and terminal, computer readable storage medium |
| CN115035851A (en) * | 2022-08-10 | 2022-09-09 | 深圳精智达技术股份有限公司 | Gamma white balance rapid adjustment method and related device |
Non-Patent Citations (3)
| Title |
|---|
| Highly Color-purified-white Organic Light-emitting Devices;Gang Zhang;《2011 International Conference on Electric Information and Control Engineering》;20110527;全文 * |
| 基于人类视觉系统的立体图像质量评价方法的研究;王海亮;《 中国优秀硕士论文电子期刊网》;20140315;全文 * |
| 小电流LED屏白平衡色温的控制;詹永波;张健伟;曾建雄;陈鲁;;发光学报;20161115(11);全文 * |
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|---|---|
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