CN110896466A - White balance adjustment method and system of display device - Google Patents
White balance adjustment method and system of display device Download PDFInfo
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Abstract
In a white balance adjustment method and system for a display device according to an embodiment of the present invention, by obtaining a gain value of a red pixel and a gain value of a blue pixel of a first frame, wherein the first frame is a current frame of the display device, the blue pixel gain value is adjusted to obtain a second frame, respectively acquiring the color coordinates of the first picture and the second picture, and according to the color coordinates of the first picture and the second picture, adjusting an initial red pixel gain value, an initial green pixel gain value, and an initial blue pixel gain value of the display device, thereby realizing accurate adjustment of the white balance of the display device, solving the problems of the prior white balance adjustment mode, the white balance of the display is adjusted through instrument measurement and manual assignment, and the problems of low working efficiency and high error rate exist.
Description
Technical Field
The embodiment of the invention belongs to the technical field of display, and particularly relates to a white balance adjusting method and a white balance adjusting system of a display device.
Background
In the prior art, in the production and verification process of a television, a white picture is usually generated by a signal generator, a color temperature meter is adopted to measure the color coordinate of a white field, and the white balance debugging of the television is performed by manually adjusting the gain values of RGB.
However, in the conventional white balance adjustment method, the white balance of the display is adjusted by instrumental measurement and manual assignment, and the white balance adjustment method has low work efficiency and high error rate.
Disclosure of Invention
The embodiment of the invention provides a white balance adjusting method and a white balance adjusting system of a display device, and aims to solve the problems of low working efficiency and high error rate of the existing white balance adjusting mode in which the white balance of a display is adjusted through instrument measurement and manual assignment.
The embodiment of the invention provides a white balance adjusting method of a display device, which comprises the following steps:
acquiring a red pixel gain value and a blue pixel gain value of a first picture, wherein the first picture is a current picture of the display device;
adjusting the blue pixel gain value to obtain a second picture, and respectively obtaining the color coordinates of the first picture and the second picture;
and adjusting an initial red pixel gain value, an initial green pixel gain value and an initial blue pixel gain value of the display device according to the color coordinates of the first picture and the color coordinates of the second picture.
Optionally, the adjusting the gain value of the blue pixel to obtain a second picture, and respectively obtaining color coordinates of the first picture and the second picture includes:
keeping the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and setting the gain value of the blue pixel as a first preset gain value to obtain a second picture;
and respectively acquiring the color coordinates of the first picture and the second picture by using a thermodetector.
Optionally, the adjusting an initial red pixel gain value, an initial green pixel gain value, and an initial blue pixel gain value of the display device according to the color coordinate of the first picture and the color coordinate of the second picture includes:
obtaining a red pixel gain calibration value and a blue pixel gain calibration value according to the corresponding relation of the color coordinate of the first picture, the color coordinate of the second picture and a preset standard color coordinate;
setting the red pixel gain calibration value and the blue pixel gain calibration value to an initial red pixel gain value and an initial blue pixel gain value, respectively, of the display device.
Alternatively to this, the first and second parts may,
the obtaining of the red pixel gain calibration value and the blue pixel gain calibration value according to the corresponding relationship between the color coordinate of the first picture, the color coordinate of the second picture and the preset standard color coordinate includes:
determining a color temperature of the display device;
acquiring a reference ordinate Y and a reference abscissa X from the preset standard color coordinate corresponding relation according to the color temperature of the display device;
defining blue pixel gain calibration values
Defining red pixel gain calibration values
Wherein R0 is a preset red pixel reference gain, B0 is a preset blue pixel reference gain, x0 and y0 are respectively an abscissa and an ordinate of a color coordinate of the first screen, x1 and y1 are respectively an abscissa and an ordinate of a color coordinate of the second screen, B0 is a blue pixel gain value when the display device displays the first screen, and B1 is a first preset gain value.
Optionally, the white balance adjustment method further includes:
keeping the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and setting the gain value of the blue pixel to be a second preset gain value to obtain a third picture, wherein the second preset gain value is located between the gain value of the blue pixel and the first preset gain value;
acquiring a color coordinate of the third picture;
judging whether the color coordinate of the third picture meets a preset color coordinate threshold range, if so, adjusting an initial red pixel gain value, an initial green pixel gain value and an initial blue pixel gain value of the display device; if not, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted.
In order to solve the above technical problem, an embodiment of the present invention further provides a white balance adjustment system for a display device, where the white balance adjustment system includes:
the display device comprises a first obtaining module, a second obtaining module and a display module, wherein the first obtaining module is used for obtaining a red pixel gain value and a blue pixel gain value of a first picture, and the first picture is a current picture of the display device;
the second acquisition module is used for adjusting the blue pixel gain value to obtain a second picture and respectively acquiring the color coordinates of the first picture and the second picture;
and the adjusting module is used for adjusting the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device according to the color coordinate of the first picture and the color coordinate of the second picture.
Optionally, the second obtaining module includes:
the picture setting unit keeps the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and sets the gain value of the blue pixel as a first preset gain value to obtain a second picture;
and the detection unit is used for respectively acquiring the color coordinates of the first picture and the second picture by adopting a temperature measuring instrument.
Optionally, the adjusting module includes:
the gain acquisition unit is used for obtaining a red pixel gain calibration value and a blue pixel gain calibration value according to the corresponding relation of the color coordinate of the first picture, the color coordinate of the second picture and a preset standard color coordinate;
a gain setting unit for setting the red pixel gain calibration value and the blue pixel gain calibration value to an initial red pixel gain value and an initial blue pixel gain value of the display device, respectively.
Optionally, the adjusting module includes:
a detection unit for determining a color temperature of the display apparatus;
the color coordinate acquisition unit is used for acquiring a reference ordinate Y and a reference abscissa X from the preset standard color coordinate corresponding relation according to the color temperature of the display device;
a gain adjustment defining unit for defining a blue pixel gain calibration value B,
but also for defining a red pixel gain calibration value R,
wherein R0 is a preset red pixel reference gain, B0 is a preset blue pixel reference gain, x0 and y0 are respectively an abscissa and an ordinate of a color coordinate of the first screen, x1 and y1 are respectively an abscissa and an ordinate of a color coordinate of the second screen, B0 is a blue pixel gain value when the display device displays the first screen, and B1 is a first preset gain value.
Optionally, the adjusting module further includes:
a contrast image setting unit, configured to keep a red pixel gain value and a green pixel gain value of the first image unchanged, and set the blue pixel gain value to a second preset gain value, so as to obtain a third image, where the second preset gain value is located between the blue pixel gain value and the first preset gain value;
a color coordinate acquiring unit configured to acquire a color coordinate of the third screen;
the judging unit is used for judging whether the color coordinates of the third picture meet a preset color coordinate threshold range or not, and if so, adjusting the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device; if not, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted.
In the white balance adjustment method and system for a display device according to the embodiments of the present invention, a red pixel gain value and a blue pixel gain value of a first frame are obtained, wherein the first frame is a current frame of the display device, the blue pixel gain value is adjusted to obtain a second frame, respectively acquiring the color coordinates of the first picture and the second picture, and according to the color coordinates of the first picture and the second picture, adjusting an initial red pixel gain value, an initial green pixel gain value, and an initial blue pixel gain value of the display device, thereby realizing accurate adjustment of the white balance of the display device, solving the problems of the prior white balance adjustment mode, the white balance of the display is adjusted through instrument measurement and manual assignment, and the problems of low working efficiency and high error rate exist.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a white balance adjustment method for a display device according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a white balance adjustment module of a display device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular device structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
In the embodiment of the invention, the red pixel gain value and the blue pixel gain value of a first picture are obtained, wherein the first picture is a current picture of the display device, the blue pixel gain value is adjusted to obtain a second picture, the color coordinates of the first picture and the second picture are respectively obtained, and the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are adjusted according to the color coordinates of the first picture and the color coordinates of the second picture, so that the white balance of the display device is accurately adjusted, and the problems of low working efficiency and high error rate existing in the conventional white balance adjustment mode due to the fact that the white balance of a display is adjusted through instrument measurement and manual assignment values are solved.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a white balance adjustment method of a display device according to an embodiment of the present invention, and as shown in fig. 1, the white balance adjustment method of the display device in this embodiment may include: step S101 to step S103.
Step S101, a red pixel gain value and a blue pixel gain value of a first picture are obtained, where the first picture is a current picture of the display device.
In this embodiment, the first frame is a current frame of the display device, the current frame is formed by pixels arranged in an array, each pixel includes a red pixel, a green pixel and a blue pixel, and the gray-scale values of the red pixel, the green pixel and the blue pixel are controlled to generate a color required by a user. Under the determined brightness, the display device displays the gain value of the red pixel, the gain value of the green pixel and the gain value of the blue pixel of the current picture, namely, the white balance of the current picture can be determined, the white balance refers to that under the light of a certain color, when the white of the environment is restored to be white, at the moment, other colors can also be restored to be correct, and through the correction of the white balance of the display device, the gray-scale values, namely the luminous intensity, of the red pixel, the green pixel and the blue pixel of the whole image are adjusted, so that the error caused by the external light is corrected.
Further, the red pixel gain value, the green pixel gain value and the blue pixel gain value when the display device displays the current picture are detected to determine whether the white balance of the display device displaying the current picture meets the standard white balance, if so, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted, and if not, the step S102 is performed.
Step S102, adjusting the blue pixel gain value to obtain a second picture, and respectively obtaining the color coordinates of the first picture and the second picture.
Optionally, when the display device displays the current picture, after adjusting the gain value of the blue pixel of the current picture, the current picture changes to form a second picture, detecting the color coordinates of the first picture and the second picture, acquiring the color coordinates of the first picture and the second picture, the color coordinates being color coordinates, also called a color table system, and assuming that the horizontal axis of the color coordinates is X and the vertical axis is Y, determining a point on the chromaticity diagram, and using the point on the chromaticity to represent the light-emitting color, i.e. the color coordinates accurately represent the color, the color coordinates corresponding to the color temperature, and the color temperature being obtained by calculating the color coordinates, specifically, by determining the color of a certain point on the chromaticity diagram, determining the X coordinate and the Y coordinate of the point by the color coordinates, and determining the position of the point color in the chromaticity diagram, thereby confirming the color temperature, for example, a standard B light source specified by the international commission on illumination, the color coordinates are (0.3484,0.3516), the corresponding color temperature is 4847K, where K is kelvin temperature and is used to represent color, and the white balance of the display device is to adjust the internal color circuit to make the displayed picture closer to the visual habit of human eyes under different color temperature conditions, that is, the white displayed by the display device is still standard white in human eyes under any color temperature condition.
In the embodiment, the color temperature of the first picture and the color temperature of the second picture are determined by detecting the color coordinates of the first picture and the second picture through the color temperature meter so as to determine the current white balance condition of the display.
Step S103, adjusting an initial red pixel gain value, an initial green pixel gain value, and an initial blue pixel gain value of the display device according to the color coordinates of the first picture and the color coordinates of the second picture.
After obtaining the color coordinates of the first picture and the second picture, keeping the gain value of the green pixel of the display device unchanged, and adjusting the initial gain value of the red pixel and the initial gain value of the blue pixel of the display device, specifically, according to the color coordinates of the first picture and the second picture, generating a red pixel gain calibration value and a blue pixel gain calibration value by using a pre-constructed calculation model, wherein the red pixel gain calibration value is the adjusted initial red pixel gain value, the blue pixel gain calibration value is the adjusted initial blue pixel gain calibration value, and the purpose of calibrating the white balance of the display device is achieved by adjusting the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device.
As an embodiment of the present invention, the adjusting the gain value of the blue pixel to obtain a second picture, and respectively obtaining color coordinates of the first picture and the second picture includes:
keeping the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and setting the gain value of the blue pixel as a first preset gain value to obtain a second picture;
and respectively acquiring the color coordinates of the first picture and the second picture by using a thermodetector.
In this embodiment, the red pixel gain value r0 of the first picture and the green pixel gain value g0 of the first picture are kept unchanged, the blue pixel gain value b0 of the first picture is modified to a first preset gain value b1, and the blue pixel gain value b0 of the first picture is adjusted to generate the second picture, specifically, the difference between the first preset gain value b1 and the blue pixel gain value b0 is set according to the user's requirement, and in order to make the first picture and the second picture have a larger difference, the difference between the first preset gain value b1 and the blue pixel gain value b0 can be set to a larger value. And detecting the color coordinates of the first picture and the second picture by adopting a color thermometer to respectively obtain the color coordinates of the first picture and the second picture.
As an embodiment of the present invention, the adjusting an initial red pixel gain value, an initial green pixel gain value, and an initial blue pixel gain value of the display device according to the color coordinates of the first screen and the color coordinates of the second screen includes:
obtaining a red pixel gain calibration value and a blue pixel gain calibration value according to the corresponding relation of the color coordinate of the first picture, the color coordinate of the second picture and a preset standard color coordinate;
setting the red pixel gain calibration value and the blue pixel gain calibration value to an initial red pixel gain value and an initial blue pixel gain value, respectively, of the display device.
In the present embodiment, the influence of the change in the gain value of the blue pixel on the color coordinate Y is calculated by the first calculation model constructed in advance while keeping the gain of the green pixel constant when the display device displays the first screen, thereby obtaining the calibration value of the gain of the blue pixel at the time of designating the ordinate Y in the color coordinate. The blue pixel gain also has an influence on an abscissa X in the color coordinate, and the red pixel gain has a smaller influence on a ordinate Y in the color coordinate, that is, a preset second calculation model is adopted to calculate a red pixel gain calibration value when the abscissa X in the designated color coordinate is specified, specifically, the influence of the adjusted blue pixel gain value on the abscissa X is obtained through the second calculation model, and the influence of the adjustment of the red pixel gain value on the abscissa X is superposed, so that the red pixel gain calibration value when the abscissa X in the designated color coordinate is obtained. The red pixel gain calibration value is set as the initial red pixel gain value of the display device, the blue pixel gain calibration value is set as the initial blue pixel gain value of the display device, and the initial red pixel gain value and the initial blue pixel gain value of the display device are adjusted, so that the aim of calibrating the white balance of the display device is fulfilled.
As an embodiment of the present invention, obtaining a red pixel gain calibration value and a blue pixel gain calibration value according to a corresponding relationship between a color coordinate of the first picture, a color coordinate of the second picture, and a preset standard color coordinate includes:
determining a color temperature of the display device;
acquiring a reference ordinate Y and a reference abscissa X from the preset standard color coordinate corresponding relation according to the color temperature of the display device;
a blue pixel gain calibration value B is defined,
a red pixel gain calibration value R is defined,
wherein R0 is a preset red pixel reference gain, B0 is a preset blue pixel reference gain, x0 and y0 are respectively an abscissa and an ordinate of a color coordinate of the first screen, x1 and y1 are respectively an abscissa and an ordinate of a color coordinate of the second screen, B0 is a blue pixel gain value when the display device displays the first screen, and B1 is a first preset gain value.
In the present embodiment, a first calculation model blue pixel gain calibration value B is constructed to be defined,
wherein the blue pixel gain calibration value B is:
constructing a second calculation model to define the red pixel gain calibration value R;
wherein, the red pixel gain calibration value is:
acquiring a reference ordinate Y and a reference abscissa X from the preset standard color coordinate correspondence relationship, for example, in the preset standard color coordinate correspondence relationship, when the color temperature is 6500K, the reference abscissa X is 0.313, and the reference ordinate Y is 0.329; when the color temperature is 10000K, the reference abscissa X is 0.280, and the reference ordinate Y is 0.288; r0 is a preset red pixel reference gain, B0 is a preset blue pixel reference gain, specifically, the red pixel reference gain and the blue pixel reference gain are determined according to the gray scale level of the pixel in the display device, for example, when the pixel in the display device adopts 8-bit color, the gray scale level that can be expressed is 256 levels, at this time, the red pixel reference gain and the blue pixel reference gain are both 128 levels, and when the pixel in the display device adopts 16-bit color, the gray scale level that can be expressed is 65536 levels, at this time, the red pixel reference gain and the blue pixel reference gain are both 65536/2-32768 levels. x0 and y0 are respectively the abscissa and ordinate of the color coordinate of the first picture, x2 and y2 are respectively the abscissa and ordinate of the color coordinate of the second picture, b0 is a blue pixel gain value, b1 is a first preset gain value, and b2 is a second preset gain value.
As an embodiment of the present invention, the white balance adjustment method further includes:
keeping the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and setting the gain value of the blue pixel to be a second preset gain value to obtain a third picture, wherein the second preset gain value is located between the gain value of the blue pixel and the first preset gain value;
further, acquiring a color coordinate of the third picture;
further, whether the color coordinate of the third picture meets a preset color coordinate threshold range is judged, and if yes, an initial red pixel gain value, an initial green pixel gain value and an initial blue pixel gain value of the display device are adjusted; if not, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted.
In this embodiment, the red pixel gain value r0 of the first picture and the green pixel gain value g0 of the first picture are kept unchanged, the blue pixel gain value b0 of the first picture is modified to a second preset gain value b2, and the blue pixel gain value b0 of the first picture is adjusted to generate a third picture, specifically, the second preset gain value b2 is located between the blue pixel gain value b0 and the first preset gain value b1, that is, the second preset gain value b2 is smaller than the blue pixel gain value b0 and larger than the first preset gain value b1, or the second preset gain value b2 is smaller than the first preset gain value b1 and larger than the blue pixel gain value b 0. Detecting the color coordinate of the third picture by using a color temperature meter, and judging whether the color coordinate of the third picture conforms to a preset color coordinate threshold range, specifically, the preset color coordinate threshold range is set according to the user requirement, optionally, the preset color coordinate threshold range is that whether the color coordinate of the third picture is located in a preset area between the color coordinate of the first picture and the color coordinate of the second picture, or whether the color temperature of the third picture is located between the color temperature of the first picture and the color temperature of the second picture, if the color coordinate of the third picture conforms to the preset color coordinate threshold range, adjusting the gain value of the red pixel and the gain value of the blue pixel according to the color coordinate of the first picture and the color coordinate of the second picture, and if the color coordinate of the third picture does not conform to the preset coordinate threshold range, judging that the display device is abnormal, that is not the initial gain value of the red pixel, the gain value of the blue pixel of the display device, And further, the display device with the color coordinate of the third picture not conforming to the preset coordinate threshold value range is marked with an abnormity, and the display device is repaired.
As an embodiment of the present invention, fig. 2 is a schematic block diagram of a white balance adjustment system of a display device in an embodiment of the present invention, as shown in fig. 2, the white balance adjustment system in the embodiment includes:
a first obtaining module 10, configured to obtain a red pixel gain value and a blue pixel gain value of a first picture, where the first picture is a current picture of the display device;
a second obtaining module 20, configured to adjust the blue pixel gain value to obtain a second picture, and obtain color coordinates of the first picture and the second picture respectively;
an adjusting module 30, configured to adjust an initial red pixel gain value, an initial green pixel gain value, and an initial blue pixel gain value of the display device according to the color coordinate of the first picture and the color coordinate of the second picture.
In this embodiment, the first frame is a current frame of the display device, the current frame is formed by pixels arranged in an array, each pixel includes a red pixel, a green pixel and a blue pixel, and the gray-scale values of the red pixel, the green pixel and the blue pixel are controlled to generate a color required by a user. Under the determined brightness, the display device displays the gain value of the red pixel, the gain value of the green pixel and the gain value of the blue pixel of the current picture, namely, the white balance of the current picture can be determined, the white balance refers to that under the light of a certain color, when the white of the environment is restored to be white, at the moment, other colors can also be restored to be correct, and through the correction of the white balance of the display device, the gray-scale values, namely the luminous intensity, of the red pixel, the green pixel and the blue pixel of the whole image are adjusted, so that the error caused by the external light is corrected.
Further, the red pixel gain value, the green pixel gain value and the blue pixel gain value of the display device when displaying the current picture are detected to judge whether the white balance of the display device when displaying the current picture meets the standard white balance, if so, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted, and if not, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are adjusted.
Optionally, when the display device displays the current picture, after adjusting the gain value of the blue pixel of the current picture, the current picture changes to form a second picture, detecting the color coordinates of the first picture and the second picture, acquiring the color coordinates of the first picture and the second picture, the color coordinates being color coordinates, also called a color table system, and assuming that the horizontal axis of the color coordinates is X and the vertical axis is Y, determining a point on the chromaticity diagram, and using the point on the chromaticity to represent the light-emitting color, i.e. the color coordinates accurately represent the color, the color coordinates corresponding to the color temperature, and the color temperature being obtained by calculating the color coordinates, specifically, by determining the color of a certain point on the chromaticity diagram, determining the X coordinate and the Y coordinate of the point by the color coordinates, and determining the position of the point color in the chromaticity diagram, thereby confirming the color temperature, for example, a standard B light source specified by the international commission on illumination, the color coordinates are (0.3484,0.3516), the corresponding color temperature is 4847K, where K is kelvin temperature and is used to represent color, and the white balance of the display device is to adjust the internal color circuit to make the displayed picture closer to the visual habit of human eyes under different color temperature conditions, that is, the white displayed by the display device is still standard white in human eyes under any color temperature condition.
In the embodiment, the color temperature of the first picture and the color temperature of the second picture are determined by detecting the color coordinates of the first picture and the second picture through the color temperature meter so as to determine the current white balance condition of the display.
After obtaining the color coordinates of the first picture and the second picture, keeping the gain value of the green pixel of the display device unchanged, and adjusting the initial gain value of the red pixel and the initial gain value of the blue pixel of the display device, specifically, according to the color coordinates of the first picture and the second picture, generating a red pixel gain calibration value and a blue pixel gain calibration value by using a pre-constructed calculation model, wherein the red pixel gain calibration value is the adjusted initial red pixel gain value, the blue pixel gain calibration value is the adjusted initial blue pixel gain calibration value, and the purpose of calibrating the white balance of the display device is achieved by adjusting the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device.
As an embodiment of the present invention, the second obtaining module includes:
the picture setting unit keeps the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and sets the gain value of the blue pixel as a first preset gain value to obtain a second picture;
and the detection unit is used for respectively acquiring the color coordinates of the first picture and the second picture by adopting a temperature measuring instrument.
In this embodiment, the red pixel gain value r0 of the first picture and the green pixel gain value g0 of the first picture are kept unchanged, the blue pixel gain value b0 of the first picture is modified to a first preset gain value b1, and the blue pixel gain value b0 of the first picture is adjusted to generate the second picture, specifically, the difference between the first preset gain value b1 and the blue pixel gain value b0 is set according to the user's requirement, and in order to make the first picture and the second picture have a larger difference, the difference between the first preset gain value b1 and the blue pixel gain value b0 can be set to a larger value. And detecting the color coordinates of the first picture and the second picture by adopting a color thermometer to respectively obtain the color coordinates of the first picture and the second picture.
As an embodiment of the present invention, the adjusting module includes:
the gain acquisition unit is used for obtaining a red pixel gain calibration value and a blue pixel gain calibration value according to the corresponding relation of the color coordinate of the first picture, the color coordinate of the second picture and a preset standard color coordinate;
a gain setting unit for setting the red pixel gain calibration value and the blue pixel gain calibration value to an initial red pixel gain value and an initial blue pixel gain value of the display device, respectively.
In the present embodiment, the influence of the change in the gain value of the blue pixel on the color coordinate Y is calculated by the first calculation model constructed in advance while keeping the gain of the green pixel constant when the display device displays the first screen, thereby obtaining the calibration value of the gain of the blue pixel at the time of designating the ordinate Y in the color coordinate. The blue pixel gain also has an influence on an abscissa X in the color coordinate, and the red pixel gain has a smaller influence on a ordinate Y in the color coordinate, that is, a preset second calculation model is adopted to calculate a red pixel gain calibration value when the abscissa X in the designated color coordinate is specified, specifically, the influence of the adjusted blue pixel gain value on the abscissa X is obtained through the second calculation model, and the influence of the adjustment of the red pixel gain value on the abscissa X is superposed, so that the red pixel gain calibration value when the abscissa X in the designated color coordinate is obtained. The red pixel gain calibration value is set as the initial red pixel gain value of the display device, the blue pixel gain calibration value is set as the initial blue pixel gain value of the display device, and the initial red pixel gain value and the initial blue pixel gain value of the display device are adjusted, so that the aim of calibrating the white balance of the display device is fulfilled.
As an embodiment of the present invention, a method for manufacturing a semiconductor device,
the adjustment module includes:
a detection unit for determining a color temperature of the display apparatus;
the color coordinate acquisition unit is used for acquiring a reference ordinate Y and a reference abscissa X from the preset standard color coordinate corresponding relation according to the color temperature of the display device;
a gain adjustment defining unit for defining a blue pixel gain calibration value B,
but also for defining a red pixel gain calibration value R,
wherein R0 is a preset red pixel reference gain, B0 is a preset blue pixel reference gain, x0 and y0 are respectively an abscissa and an ordinate of a color coordinate of the first screen, x1 and y1 are respectively an abscissa and an ordinate of a color coordinate of the second screen, B0 is a blue pixel gain value when the display device displays the first screen, and B1 is a first preset gain value.
As an embodiment of the present invention, the adjusting module further includes:
the adjustment module further comprises:
a contrast image setting unit, configured to keep a red pixel gain value and a green pixel gain value of the first image unchanged, and set the blue pixel gain value to a second preset gain value, so as to obtain a third image, where the second preset gain value is located between the blue pixel gain value and the first preset gain value;
a color coordinate acquiring unit configured to acquire a color coordinate of the third screen;
the judging unit is used for judging whether the color coordinates of the third picture meet a preset color coordinate threshold range or not, and if so, adjusting the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device; if not, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted.
In the white balance adjustment method and system for the display device, a red pixel gain value, a green pixel gain value and a blue pixel gain value of a first picture are obtained, wherein the first picture is a current picture of the display device, a second picture is obtained by adjusting the blue pixel gain value, color coordinates of the first picture and the second picture are respectively obtained, and the red pixel gain value and the blue pixel gain value are adjusted according to the color coordinates of the first picture and the color coordinates of the second picture, so that the white balance of the display device is accurately adjusted, and the problems of low working efficiency and high error rate of a display device due to the fact that the white balance of the display device is adjusted through instrument measurement and manual assignment in the existing white balance adjustment mode are solved.
In specific applications, the Display device may be any type of Display device, such as a Liquid Crystal Display panel based on Thin Film Transistor Liquid Crystal Display (TFT-LCD) technology, a Liquid Crystal Display panel based on Liquid Crystal Display (LCD) technology, an Organic electroluminescent Display panel based on Organic electroluminescent Display (OLED) technology, a Quantum Dot Light Emitting diode Display panel based on Quantum Dot Light Emitting Diodes (QLED) technology, or a curved Display panel.
The modules in all embodiments of the present invention may be implemented by a general purpose integrated circuit, such as a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC).
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A white balance adjustment method of a display device, the white balance adjustment method comprising:
acquiring a red pixel gain value and a blue pixel gain value of a first picture, wherein the first picture is a current picture of the display device;
adjusting the blue pixel gain value to obtain a second picture, and respectively obtaining the color coordinates of the first picture and the second picture;
and adjusting an initial red pixel gain value, an initial green pixel gain value and an initial blue pixel gain value of the display device according to the color coordinates of the first picture and the color coordinates of the second picture.
2. The white balance adjustment method according to claim 1, wherein the adjusting the blue pixel gain value to obtain a second picture and respectively obtaining the color coordinates of the first picture and the second picture comprises:
keeping the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and setting the gain value of the blue pixel as a first preset gain value to obtain a second picture;
and respectively acquiring the color coordinates of the first picture and the second picture by using a thermodetector.
3. The white balance adjustment method according to claim 1, wherein the adjusting an initial red pixel gain value, an initial green pixel gain value, and an initial blue pixel gain value of the display device according to the color coordinates of the first picture and the color coordinates of the second picture comprises:
obtaining a red pixel gain calibration value and a blue pixel gain calibration value according to the corresponding relation of the color coordinate of the first picture, the color coordinate of the second picture and a preset standard color coordinate;
setting the red pixel gain calibration value and the blue pixel gain calibration value to an initial red pixel gain value and an initial blue pixel gain value, respectively, of the display device.
4. The white balance adjustment method according to claim 3, wherein the obtaining of the red pixel gain calibration value and the blue pixel gain calibration value according to the color coordinate of the first picture, the color coordinate of the second picture and a preset standard color coordinate correspondence comprises:
determining a color temperature of the display device;
acquiring a reference ordinate Y and a reference abscissa X from the preset standard color coordinate corresponding relation according to the color temperature of the display device;
a blue pixel gain calibration value B is defined,
a red pixel gain calibration value R is defined,
wherein R0 is a preset red pixel reference gain, B0 is a preset blue pixel reference gain, x0 and y0 are respectively an abscissa and an ordinate of a color coordinate of the first screen, x1 and y1 are respectively an abscissa and an ordinate of a color coordinate of the second screen, B0 is a blue pixel gain value when the display device displays the first screen, and B1 is a first preset gain value.
5. The white balance adjustment method according to claim 2, characterized in that the white balance adjustment method further comprises:
keeping the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and setting the gain value of the blue pixel to be a second preset gain value to obtain a third picture, wherein the second preset gain value is located between the gain value of the blue pixel and the first preset gain value;
acquiring a color coordinate of the third picture;
judging whether the color coordinate of the third picture meets a preset color coordinate threshold range, if so, adjusting an initial red pixel gain value, an initial green pixel gain value and an initial blue pixel gain value of the display device; if not, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted.
6. A white balance adjustment system of a display device, characterized by comprising:
the display device comprises a first obtaining module, a second obtaining module and a display module, wherein the first obtaining module is used for obtaining a red pixel gain value and a blue pixel gain value of a first picture, and the first picture is a current picture of the display device;
the second acquisition module is used for adjusting the blue pixel gain value to obtain a second picture and respectively acquiring the color coordinates of the first picture and the second picture;
and the adjusting module is used for adjusting the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device according to the color coordinate of the first picture and the color coordinate of the second picture.
7. The white balance adjustment system according to claim 6, wherein the second acquisition module includes:
the picture setting unit keeps the gain value of the red pixel and the gain value of the green pixel of the first picture unchanged, and sets the gain value of the blue pixel as a first preset gain value to obtain a second picture;
and the detection unit is used for respectively acquiring the color coordinates of the first picture and the second picture by adopting a temperature measuring instrument.
8. The white balance adjustment system according to claim 6, wherein the adjustment module includes:
the gain acquisition unit is used for obtaining a red pixel gain calibration value and a blue pixel gain calibration value according to the corresponding relation of the color coordinate of the first picture, the color coordinate of the second picture and a preset standard color coordinate;
a gain setting unit for setting the red pixel gain calibration value and the blue pixel gain calibration value to an initial red pixel gain value and an initial blue pixel gain value of the display device, respectively.
9. The white balance adjustment system of claim 8, wherein the adjustment module comprises:
a detection unit for determining a color temperature of the display apparatus;
the color coordinate acquisition unit is used for acquiring a reference ordinate Y and a reference abscissa X from the preset standard color coordinate corresponding relation according to the color temperature of the display device;
a gain adjustment defining unit for defining a blue pixel gain calibration value B,
but also for defining a red pixel gain calibration value R,
wherein R0 is a preset red pixel reference gain, B0 is a preset blue pixel reference gain, x0 and y0 are respectively an abscissa and an ordinate of a color coordinate of the first screen, x1 and y1 are respectively an abscissa and an ordinate of a color coordinate of the second screen, B0 is a blue pixel gain value when the display device displays the first screen, and B1 is a first preset gain value.
10. The white balance adjustment system of claim 7, wherein the adjustment module further comprises:
a contrast image setting unit, configured to keep a red pixel gain value and a green pixel gain value of the first image unchanged, and set the blue pixel gain value to a second preset gain value, so as to obtain a third image, where the second preset gain value is located between the blue pixel gain value and the first preset gain value;
a color coordinate acquiring unit configured to acquire a color coordinate of the third screen;
the judging unit is used for judging whether the color coordinates of the third picture meet a preset color coordinate threshold range or not, and if so, adjusting the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device; if not, the initial red pixel gain value, the initial green pixel gain value and the initial blue pixel gain value of the display device are not adjusted.
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