Display device and image display method

Abstract

Some embodiments of the present application show a display device and an image display method, the method comprising: identifying an image content of a to-be-displayed image, and obtaining an image parameter based on the image content, the image parameter being used for representing a hue or contrast of the to-be-displayed image; calculating brightness adjustment values of a plurality of color light-emitting units in a light-emitting unit group corresponding to pixels in the to-be-displayed image according to the image parameters; and controlling a backlight controller to adjust the brightness of a plurality of color light-emitting units in the light-emitting unit groups corresponding to the pixels according to the brightness adjustment values. According to the embodiment of the invention, the color backlight source is selected, and the brightness of the different color light-emitting units corresponding to each pixel in the to-be-displayed image is flexibly and independently adjusted according to the image parameters, so that the contrast ratio of the image is enhanced, and more accurate color restoration is realized.

Description

Technical Field

[0001] The present application relates to the field of image display technology, and in particular to a display device and an image display method. Background Art

[0002] At the heart of an LCD TV is the LCD panel, which consists of multiple layers, including a layer of liquid crystals between two glass substrates. Liquid crystals don't emit light on their own, so an external light source, known as a backlight, is needed to illuminate the screen. When an electric current is applied to the liquid crystal molecules, they rearrange themselves, allowing varying amounts of light to pass through, creating an image.

[0003] Traditional LCD TVs use a white backlight as their light source, typically generated by LEDs. This light then passes through a liquid crystal layer and color filters to display different colors. However, the process of filtering the three primary colors (red, green, and blue) from the white light through these filters results in a loss of brightness and color purity, failing to meet image quality requirements. Summary of the Invention

[0004] Some embodiments of the present application provide a display device and an image display method, which select a color backlight source and flexibly and independently adjust the brightness of different color light-emitting units corresponding to each pixel in the image to be displayed according to image parameters to enhance the contrast of the picture and achieve more accurate color reproduction.

[0005] In a first aspect, some embodiments of the present application provide a display device, including:

[0006] A display configured to display a user interface, wherein the display includes a backlight controller, the backlight includes a plurality of light-emitting unit groups, the light-emitting unit groups include a plurality of color light-emitting units, and the backlight controller is used to independently control the brightness of each color light-emitting unit in the light-emitting unit group;

[0007] A controller is coupled to the display and is configured to:

[0008] Identifying the image content of the image to be displayed and obtaining image parameters based on the image content, where the image parameters are used to characterize the hue or contrast of the image to be displayed;

[0009] Calculating brightness adjustment values of multiple color light-emitting units in a light-emitting unit group corresponding to a pixel in an image to be displayed according to image parameters;

[0010] The backlight controller is controlled to adjust the brightness of the plurality of color light emitting units in the light emitting unit group corresponding to the pixel according to the brightness adjustment value.

[0011] The above technical solution has the following advantages or beneficial effects: selecting a color backlight source and flexibly and independently adjusting the brightness of different color light-emitting units corresponding to each pixel in the image to be displayed according to image parameters to enhance the contrast of the picture and achieve more accurate color reproduction.

[0012] In some embodiments, the image parameters include a first main color tone, which is the main color tone of the image to be displayed. The controller identifies the image content of the image to be displayed and obtains the image parameters based on the image content, and is further configured to:

[0013] Inputting the image to be displayed into the image recognition model to obtain the scene represented by the image to be displayed, the image recognition model is trained by training data, and the training data includes sample images of multiple labeled scenes;

[0014] The main color corresponding to the scene is determined as the first main color.

[0015] The above technical solution has the following advantages or beneficial effects: the image recognition model trained using sample images of labeled scenes can quickly and accurately identify the scene information in the image and quickly obtain the main color tone of the image, which helps to quickly calculate the brightness adjustment value of the color light-emitting unit corresponding to each pixel in the image.

[0016] In some embodiments, the controller calculates brightness adjustment values of multiple color light-emitting units in a light-emitting unit group corresponding to a pixel in an image to be displayed based on image parameters, and is further configured to:

[0017] When the saturation of the first main hue is greater than the first preset value, or the saturation of the first main hue is less than the second preset value, the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the image to be displayed are calculated according to the first main hue, and the first preset value is greater than the second preset value.

[0018] The above technical solution has the following advantages or beneficial effects: When the main color of the image to be displayed is relatively bright, the brightness of the color light-emitting unit can be adjusted to ensure color expression and improve contrast, which can highlight the details in the image, especially in areas with rich colors and high saturation. This makes it easier for viewers to notice subtle changes in the image and improves image clarity and readability. When the main color of the image to be displayed is relatively soft, the brightness of the color light-emitting unit can be adjusted to ensure color expression and improve contrast, which can help to display image details and make the image appear richer and more layered.

[0019] In some embodiments, the controller is further configured to calculate the brightness adjustment values of the plurality of color light emitting units in the light emitting unit group corresponding to the pixel in the image to be displayed according to the first main color tone:

[0020] Acquire a first light-emitting unit and a second light-emitting unit, wherein the first light-emitting unit includes a color light-emitting unit corresponding to the first main color, and the second light-emitting unit includes a color light-emitting unit other than the first light-emitting unit;

[0021] When the hue of a pixel in the image to be displayed is within the hue range corresponding to the first main hue, the brightness increase value of the first light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the first light-emitting unit, and / or the brightness decrease value of the second light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the second light-emitting unit.

[0022] The above technical solution has the following advantages or beneficial effects: only adjusting the brightness of the color light-emitting units corresponding to pixels with a main color tone close to the image to be displayed can increase the contrast of specific areas in the image, making the details more clearly visible, and can also highlight the theme or focus of the image, making the image look more vivid and lively.

[0023] In some embodiments, the image parameters include brightness contrast, and the controller performs identification of image content of the image to be displayed and obtains image parameters based on the image content, and is further configured to: divide the image to be displayed into a plurality of sub-region images, and calculate the brightness contrast of the sub-region images;

[0024] The controller calculates brightness adjustment values of multiple color light emitting units in a light emitting unit group corresponding to pixels in an image to be displayed based on image parameters, and is further configured to:

[0025] Determine the sub-region image whose brightness contrast is lower than the first threshold as the first sub-region image;

[0026] When the proportion of the first sub-region image exceeds a first preset proportion, brightness adjustment values of the plurality of color light-emitting units in the light-emitting unit group corresponding to the pixels in the first sub-region image are calculated.

[0027] The above technical solution has the following advantages or beneficial effects: when the brightness contrast of most sub-area images is low, the brightness of the color light-emitting unit can be adjusted to ensure color expression and improve contrast, making the details in the image more clearly visible and making the colors in the image appear more saturated and realistic.

[0028] In some embodiments, the controller calculates brightness adjustment values of multiple color light-emitting units in a light-emitting unit group corresponding to a pixel in an image to be displayed, and is further configured to:

[0029] Acquire a second main hue, a third light-emitting unit, and a fourth light-emitting unit, wherein the second main hue is the main hue of the first sub-region image, the third light-emitting unit includes light-emitting units of a color corresponding to the second main hue, and the fourth light-emitting unit includes light-emitting units of a color other than the third light-emitting unit;

[0030] When the hue of the pixel in the first sub-area image is within the hue range corresponding to the second main hue, the brightness increase value of the third light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the third light-emitting unit, and / or the brightness decrease value of the fourth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fourth light-emitting unit.

[0031] The above technical solution has the following advantages or beneficial effects: Increasing the brightness of the third light-emitting unit can make the main elements in the image more prominent, enhancing the expressiveness of the subject. Reducing the brightness of the fourth light-emitting unit can significantly increase the contrast between the third light-emitting unit's color and other colors, making the third light-emitting unit's color more eye-catching in the image, making the image appear more vivid and layered.

[0032] In some embodiments, the controller calculates brightness adjustment values of multiple color light-emitting units in a light-emitting unit group corresponding to a pixel in an image to be displayed based on image parameters, and is further configured to:

[0033] determining the sub-region image whose brightness contrast is higher than the second threshold as the second sub-region image;

[0034] When the proportion of the second sub-region image exceeds the second preset proportion, the brightness adjustment values of the plurality of color light emitting units in the light emitting unit group corresponding to the pixels in the second sub-region image are calculated.

[0035] The above technical solution has the following advantages or beneficial effects: when the brightness contrast of most sub-areas images is high, the brightness of the color light-emitting unit can be adjusted to ensure color expression and balanced contrast, which can make the brightness and color transition of the image smoother, reduce the pressure on the eyes, and also display details in extremely bright or extremely dark areas.

[0036] In some embodiments, the controller calculates brightness adjustment values of multiple color light-emitting units in a light-emitting unit group corresponding to a pixel in an image to be displayed, and is further configured to:

[0037] Acquire a third main hue, a fifth light-emitting unit, and a sixth light-emitting unit, wherein the third main hue is the main hue of the second sub-region image, the fifth light-emitting unit includes light-emitting units of a color corresponding to the third main hue, and the sixth light-emitting unit includes light-emitting units of a color other than the fifth light-emitting unit;

[0038] When the hue of the pixel in the second sub-area image is within the hue range corresponding to the third main hue, the brightness reduction value of the third light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fifth light-emitting unit, and / or the brightness increase value of the sixth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the sixth light-emitting unit.

[0039] The above technical solution has the following advantages or beneficial effects: reducing the brightness of the fifth light-emitting unit and enhancing the brightness of the sixth light-emitting unit can reduce the dominant position of the fifth light-emitting unit color in the overall color, making other colors more prominent, which can help balance the color distribution of the entire image, avoid visual fatigue or imbalance caused by a single color being too strong, and improve the overall clarity of the image.

[0040] In a second aspect, some embodiments of the present application provide an image display method, including:

[0041] Identifying the image content of the image to be displayed and obtaining image parameters based on the image content, where the image parameters are used to characterize the hue or contrast of the image to be displayed;

[0042] Calculating brightness adjustment values of multiple color light-emitting units in a light-emitting unit group corresponding to a pixel in an image to be displayed according to image parameters;

[0043] The backlight controller is controlled to adjust the brightness of the plurality of color light emitting units in the light emitting unit group corresponding to the pixel according to the brightness adjustment value.

[0044] The above technical solution has the following advantages or beneficial effects: selecting a color backlight source and flexibly and independently adjusting the brightness of different color light-emitting units corresponding to each pixel in the image to be displayed according to image parameters to enhance the contrast of the picture and achieve more accurate color reproduction.

[0045] In some embodiments, the image parameters include a first main color tone, which is the main color tone of the image to be displayed. The steps of identifying the image content of the image to be displayed and obtaining the image parameters based on the image content include:

[0046] Inputting the image to be displayed into the image recognition model to obtain the scene represented by the image to be displayed, the image recognition model is trained by training data, and the training data includes sample images of multiple labeled scenes;

[0047] The main color corresponding to the scene is determined as the first main color.

[0048] The above technical solution has the following advantages or beneficial effects: the image recognition model trained using sample images of labeled scenes can quickly and accurately identify the scene information in the image and quickly obtain the main color tone of the image, which helps to quickly calculate the brightness adjustment value of the color light-emitting unit corresponding to each pixel in the image.

[0049] In the technical solution provided in the embodiment of the present application, the image content of the image to be displayed is identified, and image parameters are obtained based on the image content. The image parameters are used to characterize the hue or contrast of the image to be displayed. Then, the brightness adjustment values of the multiple color light-emitting units in the light-emitting unit group corresponding to the pixel in the image to be displayed are calculated based on the image parameters, and the backlight controller is controlled to adjust the brightness of the multiple color light-emitting units in the light-emitting unit group corresponding to the pixel according to the brightness adjustment value. The embodiment of the present application uses a color backlight source and flexibly and independently adjusts the brightness of the different color light-emitting units corresponding to each pixel in the image to be displayed according to the image parameters to enhance the contrast of the picture and achieve more accurate color reproduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0051] Figure 1 A schematic diagram of an operation scenario between a display device and a control device provided in some embodiments of the present application;

[0052] Figure 2 A schematic diagram of the hardware configuration of a display device provided in some embodiments of the present application;

[0053] Figure 3 Schematic diagram of a display provided for some embodiments of the present application;

[0054] Figure 4 A schematic diagram of software configuration of a display device provided in some embodiments of the present application;

[0055] Figure 5 A flowchart of an image display method provided in some embodiments of the present application;

[0056] Figure 6 A schematic diagram of an image display setting page provided in some embodiments of the present application;

[0057] Figure 7 A schematic diagram of a contrast setting page provided in some embodiments of the present application;

[0058] Figure 8 A schematic diagram of a color style setting page provided in some embodiments of the present application;

[0059] Figure 9 A timing diagram of an image display method provided in some embodiments of the present application;

[0060] Figure 10 An architectural diagram of an image display provided in some embodiments of the present application;

[0061] Figure 11 An architectural diagram of another image display provided for some embodiments of the present application. DETAILED DESCRIPTION

[0062] The following embodiments are described in detail, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numbers in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following embodiments are not intended to represent all possible implementations consistent with the present application. They are merely examples of systems and methods consistent with certain aspects of the present application, as detailed in the claims.

[0063] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0064] In the specification and claims of this application and the accompanying drawings, the terms "first," "second," "third," etc. are used to distinguish similar or similar objects or entities, and are not necessarily intended to limit a particular order or sequence, unless otherwise noted. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances.

[0065] The terms "comprise," "include," and "have," and any variations thereof, are intended to cover but not exclude inclusion; for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0066] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functionality associated with that element.

[0067] In the embodiments of the present application, the display device 200 generally refers to a device capable of displaying images and processing data. For example, the display device 200 includes but is not limited to a smart TV, a mobile terminal, a computer, a monitor, an advertising screen, a wearable device, a virtual reality device, an augmented reality device, etc.

[0068] Figure 1 This is a schematic diagram of an operation scenario between a display device and a control device provided in some embodiments of the present application. Figure 1 As shown in FIG, a user can operate the display device 200 through touch operation, the mobile terminal 300 and the control device 100. For example, the control device 100 can be a remote controller, a stylus pen, a handle, etc.

[0069] The mobile terminal 300 can function as a control device for performing human-computer interaction between a user and the display device 200. The mobile terminal 300 can also function as a communication device for establishing a communication connection with the display device 200 and exchanging data. In some embodiments, the mobile terminal 300 can install software applications with the display device 200, enabling connection and communication via a network communication protocol, enabling one-to-one control operations and data communication. Audio and video content displayed on the mobile terminal 300 can also be transmitted to the display device 200 for synchronized display.

[0070] like Figure 1 As shown in FIG, the display device 200 also communicates data with the server 400 through various communication methods. The display device 200 may be allowed to communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks.

[0071] The display device 200 may provide a broadcast receiving television function, and may also additionally provide an intelligent network television function with a computer support function, including but not limited to network television, smart TV, Internet Protocol television (IPTV), etc.

[0072] Figure 2 Some embodiments of this application provide Figure 1 2 is a block diagram of the hardware configuration of the display device 200.

[0073] In some embodiments, the display device 200 may include at least one of a tuner 210, a communication device 220, a detector 230, a device interface 240, a controller 250, a display 260, an audio output device 270, a memory, a power supply, and a user input interface.

[0074] In some embodiments, detector 230 is used to collect signals from the external environment or external interactions. For example, detector 230 may include a light receiver, such as a sensor for collecting ambient light intensity; or an image collector, such as a camera, for collecting external environmental scenes, user attributes, or user interaction gestures; or a sound collector, such as a microphone, for receiving external sounds.

[0075] In some embodiments, the display 260 includes a display component for presenting images and a driver component for driving image display. The display 260 is configured to receive image signals output from the controller 250 for display. For example, the display 260 can be used to display video content, image content, menu control interface components, and user control UI interfaces.

[0076] At the heart of the display 260 is a liquid crystal panel, composed of multiple layers, including a layer of liquid crystals between two glass substrates. Liquid crystals don't emit light on their own, so an external light source—a backlight—is needed to illuminate the screen. When an electric current is applied to the liquid crystal molecules, they rearrange themselves, allowing varying amounts of light to pass through, creating an image.

[0077] A liquid crystal layer sits between two polarizing filters, oriented perpendicularly to each other. In the absence of voltage, the liquid crystal molecules align in a specific direction, allowing light to pass through the first polarizer but be blocked by the second. When voltage is applied, the liquid crystal molecules realign, changing the polarization of the light, allowing it to pass through the second polarizer and reach the viewer's eye.

[0078] Common backlight types include cold cathode fluorescent lamps (CCFLs) and light-emitting diodes (LEDs). Edge-lit LED backlights feature LEDs placed along the edges of the screen, evenly distributing light across the entire screen via a light guide plate. This facilitates the creation of ultra-thin TVs. Direct-lit LED backlights feature LEDs placed directly behind the LCD panel, enabling better local dimming and improving contrast.

[0079] The display 260 may have at least one built-in box, with multiple light boards installed inside the box. For example, four light boards may be installed inside a box. The box refers to a shell structure used to accommodate and protect electronic components, lamps or other equipment. For the light board, the box not only provides physical protection, but also helps solve the heat dissipation problem while providing support for the entire device. The light board is usually a flat board for installing LED lights. The light board exists as a backlight source and is responsible for providing uniform light so that the content on the screen can be clearly seen.

[0080] The light panel, which houses the LEDs, is primarily responsible for emitting light. The enclosure provides structural support, protects the internal electronic components (including the light panel), and helps with heat dissipation. The two complement each other, ensuring the proper and stable operation of the equipment. The light panel is typically installed within the enclosure, ensuring the safety of the fixture and optimizing the overall structural design. The enclosure design takes into account the size, shape, and mounting method of the light panel to achieve optimal space utilization and aesthetics.

[0081] like Figure 3As shown, in an embodiment of the present application, the backlight source is composed of a plurality of light-emitting unit groups, each of which corresponds to a pixel in the image, and the light-emitting unit group is composed of independently controllable color light-emitting units, and each color light-emitting unit can independently adjust the brightness. These color light-emitting units are arranged in a matrix form, which can cover the entire screen area and provide a color light source for the liquid crystal layer. The color light-emitting units include red light-emitting units, green light-emitting units and blue light-emitting units, and the color light-emitting units may also include white light-emitting units. The red light-emitting units can be red lamp beads, the green light-emitting units can be green lamp beads, and the blue light-emitting units can be blue lamp beads.

[0082] In the embodiments of the present application, each color light-emitting unit is equipped with an independent driver circuit, for example, using thin-film transistor (TFT) array technology. The TFT can precisely control the current supply to each color light-emitting unit, changing the brightness of the light-emitting unit by adjusting the current, thereby achieving precise adjustment of the backlight value. Each TFT is connected to the corresponding color light-emitting unit, forming a one-to-one control relationship, ensuring that each unit can independently adjust the backlight value according to demand.

[0083] In embodiments of the present application, a backlight controller may be installed within the display device housing. The backlight controller may be directly connected to the driver circuit, or the driver circuit may be internally disposed within the backlight controller. The backlight controller may adjust the current in the driver circuit to control the brightness, color, and on / off state of the color light-emitting units based on a preset program, external signals, or internally stored data.

[0084] The backlight controller includes resistors and capacitors. The functions of resistors are as follows: 1) Current shunting: In LED backlights, since LEDs are very sensitive to current, excessive current may damage the LEDs. Therefore, connecting an appropriate resistor in series with each LED or LED string can limit the maximum current passing through the LED, protecting it from being burned by excessive current. 2) Voltage division: When multiple LEDs are connected in series, the total voltage demand may exceed the voltage provided by the power supply. By properly selecting the resistance value, the voltage distribution of the entire circuit can be adjusted without affecting the normal operation of the LED. 3) Brightness adjustment: By changing the resistance value or using a variable resistor, the current passing through the LED can be adjusted, thereby achieving manual or automatic adjustment of the LED brightness, etc.

[0085] Capacitors have the following functions: 1) Filtering: Adding capacitors to the power supply line helps smooth the input voltage, removing ripple and noise from the power supply, and ensuring a stable DC voltage for the LEDs. 2) Energy Storage and Release: Capacitors can quickly charge and release energy when needed, which helps cope with transient load changes or peak power demands. 3) Phase Compensation and Stability: In complex drive circuits, such as switch-mode power supplies with feedback loops, appropriately configured capacitors can provide phase compensation, prevent oscillations, and ensure stable system operation.

[0086] In this embodiment of the present application, the backlight controller is connected to the controller's image analysis module. The backlight controller receives instructions from the image analysis module and precisely controls the driving current of each color light-emitting unit, thereby adjusting its brightness. Furthermore, the brightness ratio between different color light-emitting units can be flexibly adjusted based on the image and environmental requirements, achieving more accurate color reproduction.

[0087] The image analysis module uses advanced image processing algorithms to analyze the input image frame by frame. For example, by statistically analyzing the color distribution in different areas of the image, it determines the dominant color tone and contrast requirements. For dark areas that are detected as primarily black or dark, the image analysis module instructs the backlight controller to reduce the brightness of the corresponding color backlight, or even turn off some light-emitting units, to achieve deeper blacks and improve contrast.

[0088] The image analysis module can be integrated into the display device's central processing unit or image processor, enabling it to acquire the image data to be displayed in real time. The image analysis module is used to analyze the image to be displayed and determine the brightness of the color light-emitting unit corresponding to each pixel. This brightness is then transmitted to the backlight controller, which then adjusts the brightness of the corresponding color light-emitting unit. The image analysis module includes multiple pins. These pins provide power input and ground return paths to ensure proper circuit operation. They can also be used to send or receive data signals, supporting information exchange between devices. Some pins may be specifically used to transmit control commands, such as start and stop operations.

[0089] In the embodiment of the present application, an algorithm program for controlling the color backlight source can also be embedded in the operating system of the display device. The program needs to regularly read the analysis results of the image analysis module and send corresponding control instructions to the backlight source controller.

[0090] In some embodiments, the communication device 220 is a component used to communicate with an external device or server 400 according to various communication protocol types. The display device 200 can be provided with multiple communication devices 220 depending on the supported communication methods. For example, if the display device 200 supports wireless network communication, the display device 200 can be provided with a communication device 220 including WiFi functionality. If the display device 200 supports Bluetooth connection communication, the display device 200 needs to be provided with a communication device 220 including Bluetooth functionality.

[0091] The communication device 220 can establish a communication connection between the display device 200 and an external device or server 400 via a wireless or wired connection. A wired connection can connect the display device 200 to an external device via a data cable, an interface, or other components. A wireless connection can connect the display device 200 to an external device via a wireless signal or wireless network. The display device 200 can establish a connection with an external device directly or indirectly through a gateway, router, or connection device.

[0092] In some embodiments, the controller 250 may include at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processor, and a power processor, and first to nth interfaces for input / output. The controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in a memory. The controller 250 controls the overall operation of the display device 200.

[0093] In some embodiments, the controller 250 and the tuner 210 may be located in different separate devices, that is, the tuner 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

[0094] In some embodiments, the user may input a user command through a graphical user interface (GUI) displayed on the display 260 , and the user input interface receives the user input command through the graphical user interface (GUI).

[0095] In some embodiments, the audio output device 270 may be a local speaker of the display device 200, or an external audio output device connected to the display device 200. For the external audio output device connected to the display device 200, the display device 200 may further be provided with an external audio output terminal, through which the audio output device may be connected to the display device 200 to output the sound of the display device 200.

[0096] In some embodiments, user input interface 280 may be configured to receive user input commands. For example, user input interface 280 may receive text messages entered by a user in a user interface. User input interface 280 may receive user confirmation commands for controls in the user interface. User input interface 280 may also receive user voice commands.

[0097] To facilitate user interaction, in some embodiments, the display device 200 may run an operating system. An operating system is a computer program used to manage and control the hardware and software resources of the display device 200. The operating system can control the display device to provide a user interface. For example, the operating system can directly control the display device to provide a user interface, or it can provide a user interface by running an application program. The operating system also allows the user to interact with the display device 200.

[0098] It should be noted that the operating system can be a native operating system based on a specific operating platform, a third-party operating system deeply customized based on a specific operating platform, or an independent operating system specially developed for display devices.

[0099] like Figure 4 As shown, the system of the display device is divided into three layers, namely the application layer, the middleware layer and the hardware layer from top to bottom.

[0100] The application layer mainly includes commonly used applications on the TV and the application framework. Among them, commonly used applications are mainly applications developed based on the browser, such as HTML5 APPs; and native applications (Nativ e APPs).

[0101] The application layer includes the settings application. This application provides settings for the display device 200. The settings for the display device 200 are a series of configuration options within the display device 200 that allow users to adjust various operating parameters of the display device 200 based on their preferences and needs. These settings are designed to optimize the viewing experience, ensure proper operation of the display device 200, and provide additional features and services.

[0102] The Application Framework is a complete programming model that provides all the basic functions required by standard application software, such as file access, data exchange, etc., as well as the user interfaces for these functions (toolbars, status bars, menus, and dialog boxes).

[0103] Native apps can support online or offline, message push or local resource access.

[0104] The middleware layer includes various TV protocols, multimedia protocols, and system components. Middleware uses the basic services (functions) provided by system software to connect various parts of the application system or different applications on the network, enabling resource and function sharing.

[0105] The hardware layer mainly includes the HAL interface, hardware, and drivers. The HAL interface is a unified interface for all TV chips, and the specific logic is implemented by each chip. Drivers mainly include: audio driver, display driver, Bluetooth driver, camera driver, WiFi driver, USB driver, HDMI driver, sensor driver (such as fingerprint sensor, temperature sensor, pressure sensor, etc.), and power driver.

[0106] It should be noted that the above example is only a simple division of the operating system functions and does not constitute a limitation on the specific operating system form of the display device 200 in the embodiment of the present application. Depending on factors such as the function of the display device and the type of operating system, the number of levels and specific level types contained in the operating system may be expressed in other forms.

[0107] Traditional LCD TVs use a white backlight as their light source, typically generated by LEDs. This light then passes through a liquid crystal layer and color filters to display different colors. However, the process of filtering the three primary colors (red, green, and blue) from the white light through these filters results in a loss of brightness and color purity, failing to meet image quality requirements.

[0108] In order to enhance the contrast of the displayed image and achieve more accurate color reproduction, the embodiment of the present application provides a display device 200. The structure and functions of each part of the display device 200 can refer to the above embodiments. In addition, based on the display device 200 shown in the above embodiments, this embodiment further improves some functions of the display device 200. Figure 5 As shown, the controller 250 causes the display device 200 to perform the following steps by running the application:

[0109] Step S501: identifying the image content of the image to be displayed, and acquiring image parameters based on the image content, where the image parameters are used to characterize the hue or contrast of the image to be displayed.

[0110] Image parameters may include a first dominant hue and / or brightness contrast. The first dominant hue is the dominant hue of the image to be displayed. The dominant hue can be a single value or a range of values. The brightness contrast includes the brightness contrast of each sub-region in the image to be displayed.

[0111] In some embodiments, identifying the image content of an image to be displayed and obtaining image parameters based on the image content may include detecting the scene depicted by the image to be displayed. The scene may include scenes annotated in the training data of the image recognition model, scenes that match the image to be displayed to a preset degree, or preconfigured scenes. Specifically, scenes may include sunrise, grassland, snow-capped mountains, buildings, and the ocean.

[0112] One way to detect the scene represented by an image to be displayed is to input the image to an image recognition model to determine the scene corresponding to the image. The image recognition model is trained using training data, which includes sample images of multiple labeled scenes. The image recognition model is used for scene classification and can be trained using millions of labeled scene images.

[0113] When the image to be displayed is input into the image recognition model, the scene represented by the image to be displayed and its confidence level can also be obtained. The confidence level indicates the reliability of the output result. If the confidence level reaches a preset threshold, the scene output by the model can be determined to be accurate, and the dominant color corresponding to the scene output by the model can be selected as the first dominant color. If the confidence level does not reach the preset threshold, the scene output by the model can be determined to be inaccurate, and the dominant color corresponding to the scene output by the model can be selected as the first dominant color.

[0114] In some embodiments, an image to be displayed is input into an image recognition model to obtain multiple scenes corresponding to the image to be displayed. When the number of output scenes exceeds a preset number, the primary color corresponding to the scene output by the model may not be selected as the first primary color. When the number of output scenes does not exceed the preset number, the primary color corresponding to the scene output by the model may be selected as the first primary color.

[0115] The dominant color of a scene is related to its color style. For example, a sunrise scene has a color style of orange and red, with a hue range of 0-60 degrees. Another example is a meadow scene with a bright, saturated green, with a hue range of 100-180 degrees.

[0116] Another specific implementation of detecting the scene displayed by the image to be displayed may be: using the frequency distribution of various colors in the image described by the color histogram of the image to be displayed, and matching the color ratio with the preset scene.

[0117] Common color spaces include RGB, HSV, and YUV (brightness and chroma). The HSV color space is more intuitive and effective for determining dominant hues. In the RGB color space, color is represented by a combination of red, green, and blue components, while the HSV color space decomposes color into three attributes: hue, saturation, and value. Hue represents the type of color, such as red, green, and blue; saturation indicates the vividness of the color; and value indicates the brightness of the color. Converting an image from RGB to HSV facilitates subsequent analysis of color attributes.

[0118] In some embodiments, the method of obtaining the first main hue may further include obtaining a color histogram of the image to be displayed, and finding the hue value with the largest ordinate value from the color histogram, and using the corresponding color as the first main hue.

[0119] In some embodiments, the method of obtaining the first main color body may also include: first, using a regular grid division method, dividing the image to be displayed into multiple sub-region images of equal size. For example, a 1920×1080 resolution image is divided into sub-region images of 100×100 pixels, so that the entire image is divided into multiple sub-region images. Of course, the size of the sub-region images can be adjusted according to specific needs and image resolution. Smaller sub-region images can provide more detailed color distribution information, but the amount of calculation will increase accordingly; larger sub-region images have a smaller amount of calculation, but may lose some detailed information.

[0120] Then, the dominant hue of each sub-region image is determined: the color histogram of each sub-region image is obtained, and the hue value with the largest ordinate value is found in the color histogram. The corresponding color is used as the dominant hue of the sub-region image. For example, if the color histogram of a sub-region image has the largest number of pixels with a hue value of 120 degrees (corresponding to green), then the dominant hue of the sub-region image is green.

[0121] Finally, the number of sub-region images with the same hue value is counted, and the hue value corresponding to the sub-region image with the largest number is determined as the first main hue. A weighted calculation can also be performed based on the sub-region position, for example, the sub-region image closer to the center position has a greater weight.

[0122] In some embodiments, a specific implementation method for obtaining the first dominant color tone may also be: dividing the area to be displayed into multiple sub-region images of varying sizes. Among them, the sub-region located in the center of the picture has a larger area, while the sub-region located in the edge of the picture has a smaller area. After obtaining the dominant color tone of each sub-region image, a weighted average method can be used to set weights based on the size of the sub-region or the importance of the sub-region, and perform a weighted calculation on the dominant color tone of each sub-region. For example, the sub-region area in the center of the picture is larger, and its influence on the dominant color tone is also greater; while the sub-region area in the edge of the picture is smaller, its weight is relatively smaller. Through this weighted calculation, a dominant color tone value representing the entire picture is obtained, namely the first dominant color tone.

[0123] In addition to hue information, brightness information in the HSV color space is crucial for determining contrast requirements. In some embodiments, identifying the image content of an image to be displayed and obtaining image parameters based on the image content may include dividing the image to be displayed into multiple sub-region images of equal size and then calculating the brightness contrast of each sub-region image.

[0124] The method for calculating the luminance contrast of a sub-region image may include calculating the maximum and minimum luminance values within the sub-region image, and the difference between the maximum and minimum luminance values can reflect the luminance contrast within the sub-region image. For example, if the maximum luminance value in a sub-region image is 125 (brightest) and the minimum luminance value is 50 (darkest), then the luminance contrast of the sub-region image is 75. By statistically analyzing the luminance contrast of all sub-regions, the contrast of different areas of the entire image can be understood.

[0125] Step S502: Calculating brightness adjustment values of a plurality of color light emitting units in a light emitting unit group corresponding to a pixel in an image to be displayed according to image parameters.

[0126] Color light-emitting units may include red, green, and blue light-emitting units, or may be other color light-emitting units obtained by color-adjusting red, green, or blue light-emitting units. For example, color-adjusting a red light-emitting unit may produce an orange light-emitting unit. The brightness adjustment value may be the adjusted brightness value or an offset value based on the original brightness.

[0127] When the image parameter is the first main hue, the implementation method of calculating the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixel in the image to be displayed may include: judging whether the saturation of the first main hue is greater than the first preset value; if the saturation of the first main hue is greater than the first preset value, the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixel in the image to be displayed can be calculated based on the first main hue.

[0128] If the saturation of the first main hue is less than or equal to the first preset value, the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixel in the image to be displayed can be omitted, or it can be determined whether the saturation of the first main hue is less than the second preset value.

[0129] If the saturation of the first main hue is less than the second preset value, the brightness adjustment values of the multiple color light emitting units in the light emitting unit group corresponding to the pixel in the image to be displayed can be calculated according to the first main hue.

[0130] If the saturation of the first main hue is greater than or equal to a second preset value, the brightness adjustment values of the multiple color light-emitting units in the light-emitting unit group corresponding to the pixel in the image to be displayed are not calculated, or, based on the brightness contrast, the brightness adjustment values of the multiple color light-emitting units in the light-emitting unit group corresponding to the pixel in the image to be displayed are not calculated. The first preset value is greater than the second preset value.

[0131] It should be noted that if the saturation of the first primary hue is greater than a first preset value, the brightness of the multiple color light-emitting units corresponding to the pixel in the image to be displayed is adjusted at a first adjustment ratio. If the saturation of the first primary hue is less than a second preset value, the brightness of the multiple color light-emitting units corresponding to the pixel in the image to be displayed is adjusted at a second adjustment ratio, and the first adjustment ratio may be greater than the second adjustment ratio.

[0132] The first adjustment ratio corresponds to a first gain coefficient or a first gain coefficient set, and the second adjustment ratio corresponds to a second gain coefficient or a second gain coefficient set. The first gain coefficient set and the second gain coefficient set may include brightness gain coefficients corresponding to the red, green, and blue light-emitting units, and the three brightness gain coefficients may be the same or different. The brightness of the first light-emitting unit is enhanced and / or the brightness of the second light-emitting unit is reduced using the first gain coefficient or the second gain coefficient.

[0133] It should be noted that a specific implementation of obtaining the saturation of the first primary hue may include obtaining pixels in the image to be displayed whose hue values are within the hue range corresponding to the first primary hue, and calculating the average saturation of these pixels to obtain the saturation of the first primary hue. The hue range corresponding to the first primary hue is (Ha, H+a), where H is the hue value of the first primary hue and a is a set value that can be adjusted according to actual needs.

[0134] In some embodiments, a specific implementation of calculating the brightness adjustment values of multiple color light-emitting units in a light-emitting unit group corresponding to pixels in an image to be displayed based on the first main hue may include: obtaining a first light-emitting unit and a second light-emitting unit, the first light-emitting unit including a color light-emitting unit corresponding to the first main hue, the second light-emitting unit may be a color light-emitting unit other than the first light-emitting unit, the second light-emitting unit may also be a color light-emitting unit that has a negative impact on the first main hue, or may be a pre-configured color light-emitting unit.

[0135] It should be noted that a mapping table of main hues and color light-emitting units can be set. The numerical value of the first main hue is obtained, and the corresponding color light-emitting unit, i.e., the first light-emitting unit, is searched in the mapping table according to its numerical value. The first light-emitting unit includes the color light-emitting unit corresponding to the first main hue, and may also refer to the light-emitting unit corresponding to the color to which the first main hue belongs. For example, the first main hue is 120, and the first light-emitting unit refers to the color light-emitting unit corresponding thereto, i.e., the green light-emitting unit, and the second light-emitting unit may be a red light-emitting unit and a blue light-emitting unit other than the green light-emitting unit, or a pre-configured blue light-emitting unit or a red light-emitting unit that has a negative impact on the main hue display in the target scene.

[0136] After acquiring the first and second light-emitting units, the pixels in the image to be displayed are traversed, and the hue of the pixels in the image to be displayed is sequentially determined to be within the hue range corresponding to the first primary hue. If the hue of the pixel in the image to be displayed is within the hue range corresponding to the first primary hue, the brightness increase value of the first light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the first light-emitting unit, and / or the brightness decrease value of the second light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the second light-emitting unit. If the hue of the pixel in the image to be displayed is not within the hue range corresponding to the first primary hue, there is no need to calculate or adjust the brightness of the multiple color light-emitting units corresponding to the pixel.

[0137] For example, the first primary color is red, the first light-emitting unit is a red light-emitting unit, and the second light-emitting units are a green light-emitting unit and a blue light-emitting unit. If a pixel is within the hue range of the first primary color, then the new red light-emitting unit brightness corresponding to the pixel is LG1 = LG0 × (1 + ka), the new green light-emitting unit brightness is LG1 = LG0 × (1 - kb), and the new blue light-emitting unit brightness is LB1 = LB0 × (1 - kc), where ka, kb, and kc are the gain coefficients corresponding to the red, green, and blue light-emitting units and can be adjusted according to actual effects.

[0138] In the embodiment of the present application, when the main color is relatively bright (high saturation), the contrast of the image is improved by adjusting the brightness of the red light-emitting units, green light-emitting units, and blue light-emitting units corresponding to the pixels in the image to be displayed, and the expressiveness of the color is highlighted by the higher contrast. In the embodiment of the present application, when the main color is relatively soft (low saturation), the contrast of the image can also be improved by adjusting the brightness of the red light-emitting units, green light-emitting units, and blue light-emitting units corresponding to the pixels in the image to be displayed, and the expressiveness of the color is highlighted by the increased contrast.

[0139] It should be noted that after obtaining the first main hue, the saturation of the first main hue does not need to be compared with the preset value. For example, after determining the main hue corresponding to the scene as the first main hue, the step of obtaining the first light-emitting unit and the second light-emitting unit can be directly performed.

[0140] In some embodiments, in addition to setting a mapping table of main colors and color light-emitting units, corresponding color light-emitting units and gain coefficients can also be set for each scene, and the color gain coefficient corresponding to the scene can be used to enhance the brightness of the first light-emitting unit corresponding to the pixel in the image to be displayed, or reduce the brightness of the corresponding second light-emitting unit.

[0141] The main color tone, color tone range, first light emitting unit, second light emitting unit and gain coefficient of the scene can be determined by a scene configuration table. For example, the scene configuration table is shown in Table 1.

[0142] Table 1

[0143] Target scenario Main color Tonal range First light emitting unit Second light emitting unit Gain factor sunrise Red, orange 0-60 red Green, blue Red: xx Green: xx Blue: xx grassland green 100-180 green red Red: xx Green: xx …… …… …… …… …… ……

[0144] It should be noted that the image to be displayed is usually in RGB (Red, Green, Blue) color space, but in order to better analyze color characteristics, it can be converted to HSV (Hue, Saturation, Value) color space.

[0145] For example, let's assume the image analysis module's image recognition model determines that the image being displayed belongs to a sunrise scene. Sunrise scene recognition can be performed using a machine learning algorithm. This involves training the model with a large number of labeled sunrise images. The model then extracts features from the input image to determine the scene. In HSV space, sunrise images typically have a specific hue range. For example, red and orange correspond to hues of approximately 0-60 degrees.

[0146] Assume that the original red light emitting unit brightness is LR0, the green light emitting unit brightness is LG0, and the blue light emitting unit brightness is LB0.

[0147] For sunrise images, in order to improve the contrast, the brightness of the red and orange related light-emitting units can be enhanced.

[0148] 1) The new red light-emitting unit brightness LR1 = LR0 × (1 + k1 × f(H)), where k1 is the gain coefficient, for example k1 = 0.5, which can be adjusted according to the actual effect. f(H) is a function of the hue H. When 0 ≤ H ≤ 60, f(H) = 1; otherwise, f(H) = 0.

[0149] 2) Orange can be considered as a transition between red and yellow, roughly corresponding to a hue range of 30-60 degrees in the HSV space. The brightness adjustment of the new orange-related light-emitting unit is similar to that of red. The new orange-related light-emitting unit brightness LO1 can be set to LR0×(1+k2×g(H)), where k2 is another gain coefficient, for example, k2=0.3, which can be adjusted according to the actual effect. g(H) is a function of the hue H. When 30≤H≤60, g(H)=1; otherwise, g(H)=0. The orange light-emitting unit can be a light-emitting unit obtained by adjusting in association with the red light-emitting unit or by adjusting the color of the red light-emitting unit.

[0150] 3) The brightness of the green and blue light-emitting units can be appropriately reduced to highlight the warm tones of the sunrise. For example, the new green light-emitting unit brightness LG1 = LG0 × (1-k3), and the new blue light-emitting unit brightness LB1 = LB0 × (1-k4). K3 and K4 are reduction coefficients, such as K3 = 0.2 and K4 = 0.3, which can be adjusted according to the actual effect.

[0151] When there are multiple scenes, target areas corresponding to the multiple scenes can be obtained, and the brightness of multiple color light-emitting units corresponding to pixels in the target area can be adjusted according to gain coefficients corresponding to different scenes to adjust the contrast of the image to be displayed.

[0152] In some embodiments, as Figure 6 As shown, the image display setting page includes a contrast adjustment control 61 and a color style control 62. After receiving the user's confirmation operation on the contrast adjustment control 61, the following may be displayed: Figure 7 The contrast setting page shown. The contrast setting page includes multiple degree controls, and different degree controls represent different degrees of contrast enhancement. For example, the degree controls can be a weaker control 71, a normal control 72, and a stronger control 73. After receiving the user's confirmation operation on the degree control, the adjustment coefficient corresponding to the selected degree control can be multiplied by the different color gain coefficients to obtain the adjusted gain coefficient, and the brightness of the light-emitting unit can be adjusted with the new gain coefficient. For example, the adjustment coefficient corresponding to the stronger control is 1.1. In the above sunrise scene, the new red light-emitting unit brightness LR1 = LR0 × (1 + k1 × 1.1 × f (H)).

[0153] After receiving the user's confirmation operation on the color style control 62, the following may be displayed: Figure 8 The color style setting page shown. The color style setting page includes multiple mode controls, and different mode controls represent different degrees of contrast enhancement. For example, the mode control can be a standard mode control 81, a vivid mode control 82, and a game mode control 83. After receiving the user's confirmation operation on the mode control, the adjusted gain coefficient can be obtained by multiplying the different color gain coefficients by the percentage corresponding to the selected mode control, and the brightness of the light-emitting unit is adjusted with the new gain coefficient. For example, the adjustment coefficient corresponding to the vivid mode control is 1.2. In the above sunrise scene, the new red light-emitting unit brightness LR1 = LR0 × (1 + k1 × 1.2 × f (H)).

[0154] When the image parameter is brightness contrast, the brightness contrast information of each sub-region can be combined to determine the contrast requirement for the entire image. If the brightness contrast of most sub-regions is low, the overall image is softer, but may appear less clear, and appropriate contrast enhancement is required. If the brightness contrast of some sub-regions varies greatly, some areas of the image may be too glaring or too dim, requiring adjustment to balance the contrast.

[0155] In some embodiments, after calculating the luminance contrast of the sub-region image, the sub-region image with a luminance contrast lower than a first threshold is determined as the first sub-region image, the number of first sub-region images and the total number of sub-region images are obtained, and the proportion of the first sub-region image is calculated, that is, the ratio of the number of first sub-region images to the total number of sub-region images.

[0156] Then determine whether the proportion of the first sub-area image exceeds the first preset proportion. If the proportion of the first sub-area image exceeds the first preset proportion, calculate the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the first sub-area image.

[0157] A specific implementation of calculating brightness adjustment values for multiple color light-emitting units in a light-emitting unit group corresponding to a pixel in a first sub-region image may include: first obtaining a second primary hue, a third light-emitting unit, and a fourth light-emitting unit, where the second primary hue is the primary hue of the first sub-region image. The third light-emitting unit includes a color light-emitting unit corresponding to the second primary hue. The fourth light-emitting unit may be a color light-emitting unit other than the third light-emitting unit, may be a color light-emitting unit that has a negative impact on the second primary hue, or may be a pre-configured color light-emitting unit.

[0158] Then, it is determined whether the hue of the pixel in the first sub-area image is within the hue range corresponding to the second main hue. If the hue of the pixel in the first sub-area image is within the hue range corresponding to the second main hue, the brightness increase value of the third light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the third light-emitting unit, and / or the brightness decrease value of the fourth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fourth light-emitting unit.

[0159] The methods for obtaining the second main color tone and determining the color tone range are similar to those for the first main color tone, and are not described in detail here.

[0160] If the hue of the pixel in the first sub-region image is not within the hue range corresponding to the second main hue, it is not necessary to calculate the brightness adjustment values of the multiple color light-emitting units in the light-emitting unit group corresponding to the pixel in the first sub-region image.

[0161] If the proportion of the first sub-area image does not exceed the first preset proportion, there is no need to calculate the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the first sub-area image, and the step of obtaining the number of second sub-area images can be performed. It can also be determined based on the first main color tone whether it is necessary to calculate or adjust the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the image to be displayed.

[0162] In some embodiments, after calculating the luminance contrast of the sub-area image or when the proportion of the first sub-area image does not exceed a first preset ratio, the sub-area image with a luminance contrast higher than a second threshold is determined as the second sub-area image, the number of second sub-area images is obtained, and the proportion of the second sub-area image is calculated, that is, the ratio of the number of second sub-area images to the total number of sub-area images.

[0163] Then determine whether the proportion of the second sub-area image exceeds the second preset proportion. If the proportion of the second sub-area image exceeds the second preset proportion, calculate the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the second sub-area image.

[0164] The specific implementation of calculating the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the second sub-region image may include: first obtaining the third main color, the fifth light-emitting unit, and the sixth light-emitting unit, wherein the third main color is the main color of the second sub-region image. The fifth light-emitting unit includes a color light-emitting unit corresponding to the third main color, and the sixth light-emitting unit may be a color light-emitting unit other than the fifth light-emitting unit, or a color light-emitting unit that has a negative impact on the third main color, or a pre-configured color light-emitting unit.

[0165] Then, it is determined whether the hue of the pixel in the second sub-area image is within the hue range corresponding to the third main hue. If the hue of the pixel in the second sub-area image is within the hue range corresponding to the third main hue, the brightness reduction value of the third light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fifth light-emitting unit, and / or the brightness increase value of the sixth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the sixth light-emitting unit.

[0166] The methods for obtaining the third main color tone and determining the color tone range are similar to those for the first main color tone, and are not described in detail here.

[0167] If the hue of a pixel in the second sub-region image is not within the hue range corresponding to the third main hue, there is no need to adjust the brightness of the light-emitting unit of the color corresponding to the pixel.

[0168] If the proportion of the second sub-area image does not exceed the second preset proportion, there is no need to calculate the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the second sub-area image, or, determine whether it is necessary to calculate or adjust the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the image to be displayed based on the first main color tone.

[0169] Exemplarily, the first sub-area image refers to a sub-area image having a brightness contrast lower than a first threshold value of 40, and the first sub-area image accounts for 90%, which exceeds the first preset proportion of 80%. If the second main color is red and the pixel is within the hue range of the second main color, the new red light-emitting unit brightness corresponding to the pixel LG1 = LG0 × (1 + ka), the new green light-emitting unit brightness LG1 = LG0 × (1 - kb), and the new blue light-emitting unit brightness LB1 = LB0 × (1 - kc), where ka, kb, and kc are the brightness gain coefficients corresponding to the red, green, and blue light-emitting units.

[0170] The second sub-area image refers to a sub-area image with a brightness contrast higher than the second threshold value 180. The second sub-area image accounts for 76%, which exceeds the second preset ratio of 70%. If the third main color is red and the pixel is within the hue range of the third main color, the new red light-emitting unit brightness corresponding to the pixel LG1 = LG0 × (1-ka), the new green light-emitting unit brightness LG1 = LG0 × (1 + kb), and the new blue light-emitting unit brightness LB1 = LB0 × (1 + kc).

[0171] It should be added that if the user sets the contrast enhancement degree and color style, the adjusted gain coefficient can be obtained by multiplying the different color gain coefficients by the corresponding adjustment coefficient selected by the user.

[0172] Step S503: controlling the backlight controller to adjust the brightness of the plurality of color light emitting units in the light emitting unit group corresponding to the pixel according to the brightness adjustment value.

[0173] In some embodiments, the timing diagram of the image display method can be as follows: Figure 9 As shown. The image analysis module receives the image to be displayed through the image input interface, and obtains the first main hue of the image to be displayed, the first light-emitting unit and the second light-emitting unit corresponding to the first main hue. Determine whether the hue of the pixel in the image to be displayed is within the first hue range corresponding to the first main hue. If so, calculate the brightness increase value of the first light-emitting unit corresponding to the pixel using the gain coefficient corresponding to the first light-emitting unit, and calculate the brightness decrease value of the second light-emitting unit corresponding to the pixel using the gain coefficient corresponding to the second light-emitting unit. Then send the adjusted brightness increase value and brightness decrease value corresponding to the light-emitting units of different colors to the backlight controller. If not, send the original brightness value of the light-emitting units of different colors to the backlight controller. The backlight controller controls the driving current of each red, green and blue light-emitting unit according to the brightness increase value, brightness decrease value, or brightness original value, thereby adjusting its brightness.

[0174] After receiving the image to be displayed, the image analysis module can also calculate the brightness contrast of the sub-region image in the image to be displayed. When the proportion of the first sub-region image exceeds the first preset ratio, the second main color tone, the third light-emitting unit and the fourth light-emitting unit of the first sub-region image are obtained. It is determined whether the color tone of the pixel in the image to be displayed is within the color tone range corresponding to the second main color tone. If so, the brightness increase value of the third light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the third light-emitting unit, and the brightness decrease value of the fourth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fourth light-emitting unit. The adjusted brightness increase value and brightness decrease value corresponding to the light-emitting units of different colors are then sent to the backlight controller. If not, the original brightness values of the light-emitting units of different colors are sent to the backlight controller. The backlight controller controls the driving current of each red, green and blue light-emitting unit according to the brightness increase value, brightness decrease value or brightness original value, thereby adjusting its brightness.

[0175] When the proportion of the second sub-area image exceeds the second preset ratio, the third main hue, the fifth light-emitting unit and the sixth light-emitting unit of the second sub-area image are obtained. It is determined whether the hue of the pixel in the image to be displayed is within the hue range corresponding to the third main hue. If so, the brightness reduction value of the fifth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fifth light-emitting unit, and the brightness increase value of the sixth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the sixth light-emitting unit. The adjusted brightness increase value and brightness reduction value corresponding to the light-emitting units of different colors are then sent to the backlight controller. If not, the original brightness values of the light-emitting units of different colors are sent to the backlight controller. The backlight controller controls the driving current of each red, green and blue light-emitting unit according to the brightness increase value, brightness reduction value or brightness original value, thereby adjusting its brightness.

[0176] The display device in the embodiment of the present application is equipped with a color backlight system, which can dynamically adjust the intensity and color combination of the color backlight according to the content of the displayed image, and can more accurately restore the colors of the real world, making the image colors brighter and more vivid, and bringing a more immersive visual experience to users.

[0177] In some embodiments, after calculating the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to a pixel in the image to be displayed based on image parameters, the pixels in the image to be displayed may be traversed to determine whether the pixel belongs to a dark area after adjustment. If the pixel does not belong to a dark area after adjustment, there is no need to calculate the brightness of the red, green, and blue light-emitting units again. If the pixel belongs to a dark area after adjustment, the brightness of the red, green, and blue light-emitting units corresponding to the pixel is reduced by a certain ratio, for example, 50%.

[0178] After reducing the brightness of a light-emitting unit, it is further determined whether the reduced brightness is below a threshold value. For example, the threshold value is set to 10. If the reduced brightness is below the threshold value, the light-emitting unit is turned off. If the brightness of only one color of light-emitting unit is below the threshold value, only that color of light-emitting unit may be turned off, or all colors of light-emitting units may be turned off.

[0179] The embodiments of the present application can effectively reduce the backlight brightness when displaying black images, making the blacks appear deeper and significantly improving the image contrast, allowing users to clearly distinguish dark details in the image. Furthermore, when displaying dark images, the brightness of some backlight units can be reduced or turned off. Compared to the traditional method of continuously turning on the white backlight at full brightness, this can effectively reduce the energy consumption of the display device and conform to the development trend of energy conservation and environmental protection.

[0180] In some embodiments, as Figure 10As shown, the image analysis module includes an image parameter acquisition unit, a brightness analysis unit, and a dark area analysis unit. After the image analysis module receives the image to be displayed through the image input interface, the image parameter acquisition unit acquires or calculates the image parameters and sends the image parameters to the brightness analysis unit. The brightness analysis unit calculates the brightness adjustment values of the red, green, and blue light-emitting units corresponding to each pixel in the image to be displayed based on the image parameters, and sends the brightness adjustment values to the dark area analysis unit. The dark area analysis unit determines whether the pixel is a dark area. If it is a dark area, it continues to adjust the brightness of the red, green, and blue light-emitting units corresponding to the pixel, and sends the secondary adjusted brightness value to the backlight control module. If it is not a dark area, the brightness adjustment value is directly sent to the backlight control module. The backlight control module includes red, green, and blue control modules, which can independently control the red, green, and blue light-emitting units in the color backlight source corresponding to each pixel.

[0181] In some embodiments, ambient light sensors are installed at appropriate locations around or within the television screen to monitor ambient light intensity in real time. After calculating brightness adjustment values for multiple color light-emitting units in a light-emitting unit group corresponding to pixels in the image to be displayed based on image parameters, the brightness of the color light-emitting units can be adjusted based on the ambient light intensity.

[0182] The ambient light sensor determines the ambient light intensity Iambient based on the acquired ambient light, which can be measured in lux. The ambient light sensor sends the ambient light intensity to the image analysis module, which calculates the adjusted brightness of the light-emitting unit based on the brightness of the ambient light.

[0183] The calculation method for adjusting the brightness of the light-emitting unit may include: setting a basic brightness adjustment coefficient kbase (such as kbase = 0.01, which is adjustable). For each color light-emitting unit (taking red as an example), the new brightness LR2 = LR1 × (1 ± kbase × Iambient). The same is true for the green and blue light-emitting units, such as LG2 = LG1 × (1 ± kbase × Iambient), LB2 = LB1 × (1 ± kbase × Iambient). If the ambient light intensity Iambient is high, in order to make the picture still clearly visible under strong light, the brightness of the light-emitting unit will be increased; conversely, when the ambient light is dark, the brightness will be reduced to save energy and avoid glare.

[0184] Comprehensive adjustment results: After adjusting the picture content and ambient light, the final brightness of the red light-emitting unit is LR2, the brightness of the green light-emitting unit is LG2, and the brightness of the blue light-emitting unit is LB2.

[0185] In some embodiments, as Figure 11As shown, while the image analysis module receives the image to be displayed via the image input interface, it also receives ambient light intensity data from the ambient light sensor. The image parameter acquisition unit acquires or calculates image parameters and sends them to the brightness analysis unit. The ambient light sensor sends the ambient light intensity data to the brightness analysis unit. Based on the image parameters and the ambient light intensity, the brightness analysis unit calculates brightness adjustment values for the red, green, and blue light-emitting units corresponding to each pixel in the image to be displayed. One approach is to directly send these brightness adjustment values to the backlight control module. Another approach is to send these brightness adjustment values to the dark area analysis unit. The dark area analysis unit determines whether the pixel is in a dark area. If so, it further adjusts the brightness of the red, green, and blue light-emitting units corresponding to the pixel and sends the adjusted brightness values to the backlight control module. If not, the brightness adjustment values are directly sent to the backlight control module. The backlight control module converts these brightness values into analog voltage signals using a digital-to-analog converter to precisely control the drive current of each color light-emitting unit, thereby adjusting the brightness of the corresponding light-emitting unit.

[0186] In this embodiment of the application, when the ambient light is strong, the sensor feeds a signal to the image analysis module, and the system automatically increases the brightness of the color light-emitting unit to make the image clearer and more visible. When the ambient light is dark, the brightness of the color light-emitting unit is reduced to avoid the image being too bright and glaring, while achieving energy saving.

[0187] The present embodiment can utilize an image analysis module to analyze input images frame by frame, understanding the characteristics of the image content through methods such as color, brightness, and regional analysis. For example, for images with a large number of dark areas, the backlight value of the corresponding color unit can be appropriately reduced to highlight the dark details; for areas with bright colors, the backlight value of the corresponding color unit can be increased to improve color expression.

[0188] Some embodiments of the present application further provide a computer-readable storage medium that may store a program. When the computer storage medium is configured in a display device or server, the program, when executed, may include the procedural steps involved in the image display method in the above embodiments. The computer storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0189] An embodiment of the present application provides an electronic device comprising: a processor and a memory for storing processor-executable instructions, wherein the processor is configured to read the executable instructions from the memory and execute the instructions to implement the image display method in the above embodiment.

[0190] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0191] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: A display configured to display a user interface, wherein the display includes a backlight controller, the backlight includes a plurality of light-emitting unit groups, the light-emitting unit groups include a plurality of color light-emitting units, and the backlight controller is configured to independently control the brightness of each color light-emitting unit in the light-emitting unit group; a controller coupled to the display and configured to: Identifying image content of an image to be displayed, and acquiring image parameters based on the image content, wherein the image parameters are used to characterize the hue or contrast of the image to be displayed; Calculating brightness adjustment values of a plurality of color light-emitting units in a light-emitting unit group corresponding to a pixel in the image to be displayed according to the image parameters; The backlight controller is controlled to adjust the brightness of multiple color light emitting units in the light emitting unit group corresponding to the pixel according to the brightness adjustment value.

2. The display device according to claim 1, wherein The image parameters include a first main color tone, which is the main color tone of the image to be displayed. The controller identifies the image content of the image to be displayed and obtains the image parameters based on the image content, and is further configured to: Inputting the image to be displayed into an image recognition model to obtain a scene represented by the image to be displayed, wherein the image recognition model is trained using training data, the training data including sample images of a plurality of labeled scenes; The main color tone corresponding to the scene is determined as the first main color tone.

3. The display device according to claim 2, wherein The controller calculates brightness adjustment values of a plurality of color light emitting units in a light emitting unit group corresponding to pixels in the image to be displayed according to the image parameters, and is further configured to: When the saturation of the first main hue is greater than a first preset value, or the saturation of the first main hue is less than a second preset value, the brightness adjustment values of multiple color light-emitting units in the light-emitting unit group corresponding to the pixels in the image to be displayed are calculated according to the first main hue, and the first preset value is greater than the second preset value.

4. The display device according to claim 3, wherein The controller calculates brightness adjustment values of a plurality of color light emitting units in a light emitting unit group corresponding to a pixel in the image to be displayed according to the first main color tone, and is further configured to: Acquire a first light-emitting unit and a second light-emitting unit, wherein the first light-emitting unit includes a color light-emitting unit corresponding to the first main color, and the second light-emitting unit includes a color light-emitting unit other than the first light-emitting unit; When the hue of a pixel in the image to be displayed is within the hue range corresponding to the first main hue, the brightness increase value of the first light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the first light-emitting unit, and / or the brightness decrease value of the second light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the second light-emitting unit.

5. The display device according to claim 1, wherein The image parameters include brightness contrast, and the controller identifies the image content of the image to be displayed and obtains the image parameters based on the image content, and is further configured to: divide the image to be displayed into a plurality of sub-region images, and calculate the brightness contrast of the sub-region images; The controller calculates brightness adjustment values of a plurality of color light emitting units in a light emitting unit group corresponding to pixels in the image to be displayed according to the image parameters, and is further configured to: Determine the sub-region image whose brightness contrast is lower than a first threshold as a first sub-region image; When the proportion of the first sub-region image exceeds a first preset proportion, brightness adjustment values of a plurality of color light-emitting units in the light-emitting unit group corresponding to the pixels in the first sub-region image are calculated.

6. The display device according to claim 5, wherein: The controller calculates brightness adjustment values of a plurality of color light emitting units in a light emitting unit group corresponding to a pixel in the image to be displayed, and is further configured to: Acquire a second main hue, a third light-emitting unit, and a fourth light-emitting unit, wherein the second main hue is the main hue of the first sub-region image, the third light-emitting unit includes light-emitting units of a color corresponding to the second main hue, and the fourth light-emitting unit includes light-emitting units of a color other than the third light-emitting unit; When the hue of a pixel in the first sub-area image is within the hue range corresponding to the second main hue, the brightness increase value of the third light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the third light-emitting unit, and / or the brightness decrease value of the fourth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fourth light-emitting unit.

7. The display device according to claim 5, wherein: The controller calculates brightness adjustment values of a plurality of color light emitting units in a light emitting unit group corresponding to pixels in the image to be displayed according to the image parameters, and is further configured to: Determine the sub-region image whose brightness contrast is higher than a second threshold as a second sub-region image; When the proportion of the second sub-region image exceeds a second preset proportion, brightness adjustment values of the plurality of color light-emitting units in the light-emitting unit group corresponding to the pixels in the second sub-region image are calculated.

8. The display device according to claim 7, wherein: The controller calculates brightness adjustment values of a plurality of color light emitting units in a light emitting unit group corresponding to a pixel in the image to be displayed, and is further configured to: Acquire a third main hue, a fifth light-emitting unit, and a sixth light-emitting unit, wherein the third main hue is the main hue of the second sub-region image, the fifth light-emitting unit includes light-emitting units of a color corresponding to the third main hue, and the sixth light-emitting unit includes light-emitting units of a color other than the fifth light-emitting unit; When the hue of the pixel in the second sub-area image is within the hue range corresponding to the third main hue, the brightness reduction value of the third light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the fifth light-emitting unit, and / or the brightness increase value of the sixth light-emitting unit corresponding to the pixel is calculated using the gain coefficient corresponding to the sixth light-emitting unit.

9. An image display method, characterized in that: include: Identifying image content of an image to be displayed, and acquiring image parameters based on the image content, wherein the image parameters are used to characterize the hue or contrast of the image to be displayed; Calculating brightness adjustment values of a plurality of color light-emitting units in a light-emitting unit group corresponding to a pixel in the image to be displayed according to the image parameters; The backlight controller is controlled to adjust the brightness of multiple color light emitting units in the light emitting unit group corresponding to the pixel according to the brightness adjustment value.

10. The method according to claim 9, characterized in that The image parameters include a first main color tone, which is the main color tone of the image to be displayed. The steps of identifying the image content of the image to be displayed and acquiring the image parameters based on the image content include: Inputting the image to be displayed into an image recognition model to obtain a scene represented by the image to be displayed, wherein the image recognition model is trained using training data, the training data including sample images of a plurality of labeled scenes; The main color tone corresponding to the scene is determined as the first main color tone.

Images