CN107786864B - Television picture display method, equipment and readable storage medium - Google Patents

Television picture display method, equipment and readable storage medium Download PDF

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CN107786864B
CN107786864B CN201711096685.4A CN201711096685A CN107786864B CN 107786864 B CN107786864 B CN 107786864B CN 201711096685 A CN201711096685 A CN 201711096685A CN 107786864 B CN107786864 B CN 107786864B
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color
color gamut
matrix
picture display
gamut
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CN107786864A (en
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黎明德
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Shenzhen TCL Digital Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/67—Circuits for processing colour signals for matrixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits

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  • Processing Of Color Television Signals (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The invention discloses a television picture display method, which comprises the following steps: reading color parameters of a current television screen before picture display, and converting the color parameters to obtain color gamut coordinates; preprocessing the color gamut coordinate to obtain a coefficient matrix; converting to obtain a plurality of color matrixes of preset color gamut according to the coefficient matrix; monitoring whether a video signal is received; and if so, carrying out color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and carrying out picture display. The invention also discloses a television picture display device and a computer readable storage medium. The invention can optimize the color display effect of the television picture, avoid the picture content from deviating from the color of the picture on the screen due to artificial subjective regulation and control, further achieve the optimal visual effect and improve the use experience of users.

Description

Television picture display method, equipment and readable storage medium
Technical Field
The invention relates to the technical field of digital televisions, in particular to a television picture display method, television picture display equipment and a readable storage medium.
Background
With the continuous development of digital television technology and the continuous improvement of living standard of people, the functional requirements of people on television products are higher and higher, so that image quality engineers are required to adjust the image quality of a television display to achieve the best display effect, and further the requirements of users on the image quality are met.
At present, because the standards of each image quality engineer are different, the preferred colors are different, so that the final picture effect is inconsistent, and some picture contents even deviate from the color effect which should be displayed on the screen. On the other hand, since the device for producing the video source is different from the device for watching by the user, the display colors of the video source by the two devices are different, so that the user cannot enjoy the best picture effect when watching the picture content, thereby reducing the use experience of the user.
Disclosure of Invention
The invention mainly aims to provide a television picture display method, a device and a computer readable storage medium, aiming at solving the technical problem of how to optimize the color display effect of a television picture.
In order to achieve the above object, the present invention provides a method for displaying a television screen, comprising the steps of:
reading color parameters of a current television screen before picture display, and converting the color parameters to obtain color gamut coordinates;
preprocessing the color gamut coordinate to obtain a coefficient matrix;
converting to obtain a plurality of color matrixes of preset color gamut according to the coefficient matrix;
monitoring whether a video signal is received;
and if so, carrying out color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and carrying out picture display.
Preferably, before the image display, reading a color parameter of a current television screen, and converting the color parameter to obtain a color gamut coordinate includes:
reading color parameters of a current television screen before picture display, wherein the color parameters comprise three primary colors and color coordinates of reference white;
judging whether the color coordinates are all within a preset threshold value;
if so, converting the color coordinates to obtain color gamut coordinates;
if not, returning to the default value.
Preferably, the preprocessing the color gamut coordinates to obtain a coefficient matrix includes:
performing matrix operation processing on the color gamut coordinate values to obtain a coefficient determinant;
and calculating to obtain a coefficient matrix according to the coefficient determinant.
Preferably, after the matrix operation processing is performed on the color gamut coordinate values to obtain a coefficient determinant, the television picture display method further includes:
monitoring whether the coefficient determinant is obtained;
if yes, executing the operation of obtaining a coefficient matrix by calculation according to the coefficient determinant;
if not, returning to a default value or reading the color parameters again.
Preferably, the preset color gamut includes a BT709 color gamut, a DCIP3 color gamut, and a BT2020 color gamut, and if yes, performing color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and performing screen display includes:
when the video signal is received, converting the video signal into an RGB signal, and determining color gamut information of the RGB signal, wherein the color gamut information at least comprises any one of a BT709 color gamut, a DCIP3 color gamut and a BT2020 color gamut;
when the converted RGB signal is in a BT709 color gamut, carrying out color adjustment on the RGB signal according to a color matrix of the BT709 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a DCIP3 color gamut, performing color adjustment on the RGB signal according to a color matrix of a DCIP3 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a BT2020 color gamut, the RGB signal is subjected to color adjustment according to a color matrix of the BT2020 color gamut, and is displayed on the television screen.
Further, to achieve the above object, the present invention also provides a television picture display apparatus comprising:
a memory for storing a television picture display program;
a processor configured to execute a television screen display program to perform operations of:
reading color parameters of a current television screen before picture display, and converting the color parameters to obtain color gamut coordinates;
preprocessing the color gamut coordinate to obtain a coefficient matrix;
converting to obtain a plurality of color matrixes of preset color gamut according to the coefficient matrix;
monitoring whether a video signal is received;
and if so, carrying out color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and carrying out picture display.
Preferably, the operation of reading the color parameter of the current television screen and converting the color parameter to obtain the color gamut coordinate before displaying the picture includes:
reading color parameters of a current television screen before picture display, wherein the color parameters comprise three primary colors and color coordinates of reference white;
judging whether the color coordinates are all within a preset threshold value;
if so, converting the color coordinates to obtain color gamut coordinates;
if not, returning to the default value.
Preferably, the operation of preprocessing the color gamut coordinates to obtain a coefficient matrix includes:
performing matrix operation processing on the color gamut coordinate values to obtain a coefficient determinant;
and calculating to obtain a coefficient matrix according to the coefficient determinant.
Preferably, the preset color gamut includes a BT709 color gamut, a DCIP3 color gamut, and a BT2020 color gamut, and if yes, performing color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and performing image display operation including:
when the video signal is received, converting the video signal into an RGB signal, and determining color gamut information of the RGB signal, wherein the color gamut information at least comprises any one of a BT709 color gamut, a DCIP3 color gamut and a BT2020 color gamut;
when the converted RGB signal is in a BT709 color gamut, carrying out color adjustment on the RGB signal according to a color matrix of the BT709 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a DCIP3 color gamut, performing color adjustment on the RGB signal according to a color matrix of a DCIP3 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a BT2020 color gamut, the RGB signal is subjected to color adjustment according to a color matrix of the BT2020 color gamut, and is displayed on the television screen.
Further, to achieve the above object, the present invention provides a computer-readable storage medium having a television picture display program stored thereon, which when executed by a processor, implements the steps of the television picture display method according to any one of the above.
Before picture display, firstly reading color parameters of a current television screen for conversion to obtain color gamut coordinates; and secondly, preprocessing the color gamut coordinates to obtain a coefficient matrix, and then converting to obtain a plurality of color matrices of the preset color gamut. And finally, according to the color gamut information of the received video signal and the color matrix of the corresponding color gamut, carrying out color adjustment on the video signal and carrying out picture display. The color of the video signal is adjusted through the color matrix so as to optimize the color display effect of the television picture, avoid the phenomenon that picture contents deviate from the colors of the picture contents on the screen due to artificial subjective regulation, further achieve the optimal visual effect and improve the use experience of users.
Drawings
Fig. 1 is a schematic structural diagram of an operating environment of a television picture display device according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a television image display method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a detailed flow of step S10 in FIG. 2;
fig. 4 is a schematic diagram of a detailed flow of the step S50 in fig. 2.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an operating environment of a television picture display device according to an embodiment of the present invention.
The television picture display equipment provided by the embodiment of the invention has the functions of receiving video signals, accessing a network, inputting and outputting audio and video and the like.
As shown in fig. 1, the television picture display apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a television screen (Display), an input unit such as a Keyboard (Keyboard), and the network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the television picture display device may further comprise a tuner demodulator, a return channel, RF (radio frequency) circuitry, a sensor, audio circuitry, an infrared remote control interface, and the like.
Those skilled in the art will appreciate that the hardware configuration of the television picture display apparatus shown in fig. 1 does not constitute a limitation of the television picture display apparatus, and may include more or less components than those shown, or combine some components, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and a computer program. Among them, the operating system is a program that manages and controls the television picture display apparatus and software resources, and supports the operation of the television picture display program as well as other software and/or programs.
In the hardware configuration of the television picture display apparatus shown in fig. 1, the network interface 1004 is mainly used for accessing a network; the user interface 1003 is mainly used for detecting a confirmation instruction, an editing instruction, and the like. And the processor 1001 may be configured to call the television picture display program stored in the memory 1005, and perform the following operations:
reading color parameters of a current television screen before picture display, and converting the color parameters to obtain color gamut coordinates;
preprocessing the color gamut coordinate to obtain a coefficient matrix;
converting to obtain a plurality of color matrixes of preset color gamut according to the coefficient matrix;
monitoring whether a video signal is received;
and if so, carrying out color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and carrying out picture display.
Further, the television picture display apparatus calls, by the processor 1001, a television picture display program stored in the memory 1005 to perform the following operations:
reading color parameters of a current television screen before picture display, wherein the color parameters comprise three primary colors and color coordinates of reference white;
judging whether the color coordinates are all within a preset threshold value;
if so, converting the color coordinates to obtain color gamut coordinates;
if not, returning to the default value.
Further, the television picture display apparatus calls, by the processor 1001, a television picture display program stored in the memory 1005 to perform the following operations:
performing matrix operation processing on the color gamut coordinate values to obtain a coefficient determinant;
and calculating to obtain a coefficient matrix according to the coefficient determinant.
Further, the television picture display apparatus calls, by the processor 1001, a television picture display program stored in the memory 1005 to perform the following operations:
monitoring whether the coefficient determinant is obtained;
if yes, executing the operation of obtaining a coefficient matrix by calculation according to the coefficient determinant;
if not, returning to a default value or reading the color parameters again.
Further, the television picture display apparatus calls, by the processor 1001, a television picture display program stored in the memory 1005 to perform the following operations:
when the video signal is received, converting the video signal into an RGB signal, and determining color gamut information of the RGB signal, wherein the color gamut information at least comprises any one of a BT709 color gamut, a DCIP3 color gamut and a BT2020 color gamut;
when the converted RGB signal is in a BT709 color gamut, carrying out color adjustment on the RGB signal according to a color matrix of the BT709 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a DCIP3 color gamut, performing color adjustment on the RGB signal according to a color matrix of a DCIP3 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a BT2020 color gamut, the RGB signal is subjected to color adjustment according to a color matrix of the BT2020 color gamut, and is displayed on the television screen.
Based on the hardware structure of the television picture display device, various embodiments of the television picture display method of the present invention are proposed.
Referring to fig. 2, fig. 2 is a flowchart illustrating a television picture displaying method according to an embodiment of the present invention.
In this embodiment, the television picture display method includes:
step S10, before picture display, reading the color parameters of the current television screen, and converting the color parameters to obtain color gamut coordinates;
in this embodiment, the television picture visible to the human eye is composed of a plurality of frames of images in succession, and the colors are important components of the key information for decision, i.e., real and accurate color reproduction is required without deviation. The carrier of the television picture is the television screen. Each television has set configuration parameters, such as basic contents of dot pitch, resolution, scanning frequency, backlight, power consumption, electromagnetic radiation, color parameters and the like, when leaving the factory, so as to represent functions of the television. The color parameters include color type, saturation, hue, brightness, color coordinates, color temperature, and the like. Color Gamut (Color Gamut), which is a complete subset of colors and is used to accurately represent a given Color space or the Color range of an output device, is a range area formed by the number of colors that can be expressed by various display devices, and is a method for encoding colors, and the Color Gamut coordinates are a language that is common to various display, printing, scanning, and other devices and application software for colors. And converting the color parameters of the current television screen to obtain color gamut coordinates of colors which can be expressed by the television screen for subsequent processing.
Step S20, preprocessing the color gamut coordinates to obtain a coefficient matrix;
in the present embodiment, in mathematics, a Matrix (Matrix) is a set of complex or real numbers arranged in a rectangular array. The matrix may be decomposed into a sum or a product of several matrices that are relatively simple or have a certain characteristic, or a matrix of another characteristic may be recalculated. Specifically, the coefficient matrix is one of many types of matrices, and is a solution in which coefficients of an equation set are formed into a matrix to calculate an equation, and simply, a solution in which correlation coefficients between columns of the matrix are formed. Coefficient matrices are often used to represent mathematical relationships of some items, such as by proving the direct and inverse relationships of items with such relationship coefficient matrices. The color gamut coordinates are preprocessed, that is, the coefficient matrix is obtained through operations such as addition, subtraction, multiplication, transposition, conjugation and conjugate transposition.
Step S30, converting to obtain a plurality of color matrixes of the preset color gamut according to the coefficient matrix;
in this embodiment, in the process of programming the image, the color matrix may be used to adjust the color of the picture, such as adjusting the shade and brightness of the color of the picture. The preset color gamut is a color gamut preset by manufacturers when developing, and is specifically set according to standards established by the international telecommunications union, and currently, there are mainly three color gamuts, namely DCIP3, BT2020, and BT709, and may also be BT601 and BT 656. It should be noted that the physical resolutions of the color gamuts are different, and the wider the color gamut, the richer the color gradation, and the higher the requirement for the display device. Further, since the devices for manufacturing the video source cannot be unified, the coefficient matrix is converted into a plurality of color matrices with different color gamuts, such as color matrices of DCIP3, BT2020, BT709, BT601, BT656, etc., for matching with the color gamut of the video source, so as to adjust the color of the output picture and avoid distortion. And simultaneously, a plurality of color matrixes obtained by conversion are stored in a database for reading and calling, so that the operation pressure of a processor is relieved.
Step S40, monitoring whether a video signal is received;
in the present embodiment, the video signal refers to a television signal, a still image signal, and a visual television image signal. Three formats may be supported for video signals: NTSC, PAL, SECAM. The television outputs the video signal to the screen for playing only when receiving the video signal, but cannot play without the signal, for example, a user selects to play a certain network program, the processor requests the server to acquire the relevant video signal, so that whether the video signal is received needs to be monitored, and further the video signal can be further encoded and then played for display.
And step S50, if yes, performing color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and performing picture display.
In this embodiment, since the video source manufacturing device is different from the current playing device, and the video signal is usually compressed and then transmitted, some data may be lost in the transmission process, which may result in image distortion and further affect the visual effect. When a video signal is received, according to the color gamut information of the video signal, namely, the color gamut of the video signal is determined, then the color matrix corresponding to the color gamut of the video signal is called, color adjustment is carried out on the video signal, the received video signal is simply subjected to color adjustment through the matched color matrix, the accuracy of color reduction is guaranteed, and the phenomenon that a picture is separated from a color value which should be displayed due to artificial subjective regulation and control is avoided.
Before picture display is carried out, the color parameters of the current television screen are read firstly for conversion to obtain color gamut coordinates; and secondly, preprocessing the color gamut coordinates to obtain a coefficient matrix, and then converting to obtain a plurality of color matrices of the preset color gamut. And finally, according to the color gamut information of the received video signal and the color matrix of the corresponding color gamut, carrying out color adjustment on the video signal and carrying out picture display. The color of the video signal is adjusted through the color matrix so as to optimize the color display effect of the television picture, avoid the phenomenon that picture contents deviate from the colors of the picture contents on the screen due to artificial subjective regulation, further achieve the optimal visual effect and improve the use experience of users.
Referring to fig. 3, fig. 3 is a schematic view of a detailed flow of the step S10 in fig. 2.
Based on step S10 in the foregoing embodiment, before performing picture display, reading color parameters of a current television screen, and converting the color parameters to obtain color gamut coordinates, including:
step S11, before picture display, reading color parameters of the current television screen, wherein the color parameters comprise color coordinates of three primary colors and reference white;
in this embodiment, the color coordinate (chromaticity coordinate) is a coordinate of a color. The color coordinate (x, y) is commonly used at present, wherein x is a horizontal axis and y is a vertical axis. With the color coordinates, a point can be determined on the chromaticity diagram which represents the color exactly, in particular quantitatively by a physical method instead of the human eye. Any one color can be quantitatively expressed by three basic colors, i.e., blue, green, and red. For example, the standard red color coordinates are (0.67, 0.33), the standard green color coordinates are (0.21, 0.71), the standard blue color coordinates are (0.14, 0.08), and the standard white color coordinates are (0.33 ). Reading color parameters of a television screen which needs to be displayed at present, specifically, color coordinates of four colors of red, blue, green and white.
For convenience of understanding the color coordinates of the respective colors, the following table 1 shows.
TABLE 1
Figure GDA0002273643560000091
Step S12, judging whether the color coordinates are all within a preset threshold value;
in this embodiment, threshold means a limit, so that a threshold, also called a critical value, means the lowest value or the highest value that an effect can produce. The threshold value can be understood as a value range, i.e. a value range of the dependent variable. The preset threshold value is preset according to the range value when the factory leaves the factory. Specifically, the preset threshold is a range of defined color coordinates, and preferably the preset threshold is greater than 0 and less than 1.
Step S13, if yes, converting the color coordinates to obtain color gamut coordinates;
in step S14, if not, the default value is returned.
In this embodiment, in order to avoid that the read values are incorrect and cannot be executed, it is first required to determine whether the color coordinates are all within the preset threshold. When the color coordinates of the four colors are all within the preset threshold, the color coordinates are indicated to be valid numerical values and can be used for operation processing, otherwise, the color coordinates are invalid numerical values and cannot be used for operation processing, or the invalid color coordinates cannot obtain a valid coefficient matrix, and further cannot obtain a color matrix. The default value is returned, that is, the arithmetic processing is ended without optimizing the picture effect. Further, if the color coordinate of one of the colors is not within the preset range, the next operation cannot be executed, and the default value is returned.
Further optionally, in another embodiment of the present invention, a matrix operation is performed on the color gamut coordinate values to obtain a coefficient determinant, specifically, the color gamut coordinate values are first calculated to obtain a conversion matrix; secondly, calculating the conversion matrix to obtain an inverse matrix; then, calculating an inverse matrix to obtain an adjoint matrix; then, the adjoint matrix is calculated to obtain a coefficient determinant. And finally, calculating according to the coefficient determinant to obtain a coefficient matrix.
It should be noted that the coefficient determinant can be calculated to obtain the coefficient matrix, and the coefficient determinant may not necessarily be obtained by performing the matrix operation processing on the color gamut coordinates. Since there may be no solution in the matrix operation, when any one of the transformation matrix, the inverse matrix, or the adjoint matrix cannot be calculated, the coefficient determinant cannot be calculated. And when no solution exists in the operation process, ending the matrix operation process or reading the color parameters again by default for reconversion and calculation. When the coefficient matrix is obtained through calculation, the color matrix can be obtained through conversion.
The specific formula is as follows:
1. calculating an initial value m, m1，m2，m3；
m＝1/yw
m1x1+m2x2+m3x3＝mxw
m1y1+m2y2+m3y3＝1
m1(1-x1-y1)+m2(1-x2-y2)+m3(1-x3-y3)＝m(1-xw-yw)
2. Calculating to obtain a color matrix [ A]dWherein B represents a blue component, G represents a green component, and R represents a red component; it should be noted that, the color gamut coordinate (x, y) of each RGB is well defined, and at the same time, the conversion matrix from RGB to XYZ is well defined, and the two can be deduced inversely from each other.
「R」＝m1x1「X」+m1y1「Y」+m1(1-x1-y1)「Z」
「e」＝m2x2「X」+m2y2「Y」+m2(1-x2-y2)「Z」
「B」＝m3x3「X」+m3y3「Y」+m3(1-x3-y3)「Z」
X「X」+Y「Y」+Z「Y」＝Rd「R」+Gd「G」+Bd「B」
Figure GDA0002273643560000101
Referring to fig. 4, fig. 4 is a schematic view of a detailed flow of the step S50 in fig. 2.
Based on step S50 in the foregoing embodiment, if yes, performing color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and performing image display, including:
step S51, when receiving the video signal, converting the video signal into an RGB signal, and determining color gamut information of the RGB signal, wherein the color gamut information at least includes any one of a BT709 color gamut, a DCIP3 color gamut, and a BT2020 color gamut;
in this embodiment, the RGB format is a method for encoding a color, and is also called "color gamut", and a "color space" of any color in the world can be defined as a fixed number or variable. And the RGB signal is a component signal of RGB format. The RGB signals include R (red), G (green), and B (blue) numerical values, and various colors are obtained by changing three color channels of red (R), green (G), and blue (B) and superimposing them on each other according to the principle of three primary colors. At present, three color gamuts of high-definition RGB signals are mainly provided, namely DCIP3, BT2020 and BT 709. Specifically, the RGB signal has a color gamut. The color gamut is thus determined by the RGB signal content.
In step S52, when the converted RGB signal is in the BT709 color gamut, the RGB signal is color-adjusted according to the color matrix of the BT709 color gamut, and is displayed on the television screen.
In step S53, when the converted RGB signal is in the DCIP3 color gamut, the RGB signal is color-adjusted according to the color matrix of the DCIP3 color gamut and displayed on the television screen.
In step S54, when the converted RGB signal is in the BT2020 color gamut, the RGB signal is color-adjusted according to the color matrix of the BT2020 color gamut and displayed on the television screen.
In this embodiment, virtually every television screen displays an image by combining the primary colors with different ratios and intensities. The color gamut of the RGB signal is thus adjusted by the color matrix corresponding to the color gamut, i.e. the values in the components are modified, the smaller the value, the lower the luminance, the larger the value, the higher the luminance. The RGB signals are subjected to color matrix adjustment to adjust the component values of red, green and blue so as to supplement the missing color, and then imaging display is carried out. The component values of the three colors corresponding to different color gamuts are different, so that the RGB signals of the different color gamuts correspond to the color matrix having the same color gamut as the RGB signals, thereby ensuring that the image is not distorted, and further achieving the best display effect. Specifically, the RGB signal is BT709 color gamut, namely the color matrix of the BT709 color gamut is used for adjusting the colors of RGB; the RGB signal is DCIP3 color gamut, namely the color matrix of DCIP3 color gamut is used for adjusting the colors of RGB; the RGB signal is BT2020 color gamut, that is, the color matrix of BT2020 color gamut is used to adjust the color of RGB, and finally, the screen display is performed.
Further, the present invention also provides a computer-readable storage medium, and the computer-readable storage medium provided in this embodiment stores a television picture display program, which includes reading color parameters, receiving video signals, color conditions, and the like. The stored television picture display program can be read, interpreted and executed by the processor, thereby implementing the steps of the television picture display method described in any of the above embodiments of the television picture display method.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a readable storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The present invention is described in connection with the accompanying drawings, but the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various changes without departing from the spirit and scope of the invention as defined by the appended claims, and all changes that come within the meaning and range of equivalency of the specification and drawings that are obvious from the description and the attached claims are intended to be embraced therein.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A television picture display method, characterized by comprising the steps of:
reading color parameters of a current television screen before picture display, and converting the color parameters to obtain color gamut coordinates;
preprocessing the color gamut coordinate to obtain a coefficient matrix;
converting to obtain a plurality of color matrixes of preset color gamut according to the coefficient matrix;
monitoring whether a video signal is received;
and if so, carrying out color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and carrying out picture display.
2. The method as claimed in claim 1, wherein said reading color parameters of the current tv screen and converting the color parameters to obtain color gamut coordinates before displaying the picture comprises:
reading color parameters of a current television screen before picture display, wherein the color parameters comprise three primary colors and color coordinates of reference white;
judging whether the color coordinates are all within a preset threshold value;
if so, converting the color coordinates to obtain color gamut coordinates;
if not, returning to the default value.
3. The television picture display method of claim 1, wherein said preprocessing the color gamut coordinates to obtain a coefficient matrix comprises:
performing matrix operation processing on the color gamut coordinate values to obtain a coefficient determinant;
and calculating to obtain a coefficient matrix according to the coefficient determinant.
4. The television picture display method according to claim 3, wherein after said matrix operation processing is performed on said color gamut coordinate values to obtain a coefficient determinant, said television picture display method further comprises:
monitoring whether the coefficient determinant is obtained;
if yes, executing the operation of obtaining a coefficient matrix by calculation according to the coefficient determinant;
if not, returning to a default value or reading the color parameters again.
5. The method according to any one of claims 1 to 4, wherein the predetermined color gamut comprises a BT709 color gamut, a DCIP3 color gamut and a BT2020 color gamut, and if so, performing color adjustment on the video signal according to the color gamut information of the video signal and a color matrix of a corresponding color gamut, and performing image display comprises:
when the video signal is received, converting the video signal into an RGB signal, and determining color gamut information of the RGB signal, wherein the color gamut information at least comprises any one of a BT709 color gamut, a DCIP3 color gamut and a BT2020 color gamut;
when the converted RGB signal is in a BT709 color gamut, carrying out color adjustment on the RGB signal according to a color matrix of the BT709 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a DCIP3 color gamut, performing color adjustment on the RGB signal according to a color matrix of a DCIP3 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a BT2020 color gamut, the RGB signal is subjected to color adjustment according to a color matrix of the BT2020 color gamut, and is displayed on the television screen.
6. A television picture display apparatus, characterized by comprising:
a memory for storing a television picture display program;
a processor configured to execute a television screen display program to perform operations of:
reading color parameters of a current television screen before picture display, and converting the color parameters to obtain color gamut coordinates;
preprocessing the color gamut coordinate to obtain a coefficient matrix;
converting to obtain a plurality of color matrixes of preset color gamut according to the coefficient matrix;
monitoring whether a video signal is received;
and if so, carrying out color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and carrying out picture display.
7. The television picture display device according to claim 6, wherein said operation of reading color parameters of a current television screen and converting said color parameters to obtain color gamut coordinates before picture display comprises:
reading color parameters of a current television screen before picture display, wherein the color parameters comprise three primary colors and color coordinates of reference white;
judging whether the color coordinates are all within a preset threshold value;
if so, converting the color coordinates to obtain color gamut coordinates;
if not, returning to the default value.
8. The television picture display device of claim 6, wherein performing said pre-processing of said color gamut coordinates to obtain a coefficient matrix comprises:
performing matrix operation processing on the color gamut coordinate values to obtain a coefficient determinant;
and calculating to obtain a coefficient matrix according to the coefficient determinant.
9. The apparatus according to any one of claims 6 to 8, wherein the preset color gamut comprises BT709 color gamut, DCIP3 color gamut and BT2020 color gamut, and if yes, performing color adjustment on the video signal according to the color gamut information of the video signal and the color matrix of the corresponding color gamut, and performing the operation of displaying the picture comprises:
when the video signal is received, converting the video signal into an RGB signal, and determining color gamut information of the RGB signal, wherein the color gamut information at least comprises any one of a BT709 color gamut, a DCIP3 color gamut and a BT2020 color gamut;
when the converted RGB signal is in a BT709 color gamut, carrying out color adjustment on the RGB signal according to a color matrix of the BT709 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a DCIP3 color gamut, performing color adjustment on the RGB signal according to a color matrix of a DCIP3 color gamut, and displaying the RGB signal on the television screen;
when the converted RGB signal is in a BT2020 color gamut, the RGB signal is subjected to color adjustment according to a color matrix of the BT2020 color gamut, and is displayed on the television screen.
10. A computer-readable storage medium, characterized in that a television picture display program is stored thereon, which when executed by a processor implements the steps of the television picture display method according to any one of claims 1 to 5.
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