Display method and apparatus, and electronic device, storage medium and program product

Abstract

The present application belongs to the technical field of electronic devices. Disclosed are a display method and apparatus, and an electronic device, a storage medium and a program product. The method comprises: acquiring a first dynamic image and first information, wherein the first dynamic image comprises a cover frame and a first video, the first information represents luminance mapping relationships between the cover frame and a first video frame, and the first video frame is a video frame in the first video, the time interval between the time when the video frame is captured and the time when the cover frame is captured being less than or equal to a first threshold value; and on the basis of the first information, adjusting the display luminance of at least one video frame in the first video, wherein the luminance mapping relationships comprise an HDR display luminance mapping relationship and an SDR display luminance mapping relationship.

Description

Display methods, devices, electronic devices, storage media, and program products

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510197835.9, filed in China on February 21, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of electronic equipment technology, specifically relating to a display method, device, electronic equipment, storage medium, and program product. Background Technology

[0004] With the continuous development and innovation of digital imaging technology, the emerging file format of Motion Photo has come into being. Motion Photo is a file format that encapsulates a cover photo and a short video clip. In daily life and work, users often have the need to capture and play Motion Photos.

[0005] Currently, when capturing a moving image, the electronic device takes a photo of a specific moment and a few seconds of video footage before and after it, using the photo as the cover image for the moving image. When playing the moving image, the electronic device plays both the cover image and the video footage.

[0006] However, when displaying moving photos taken by electronic devices using High Dynamic Range (HDR), the screen of the electronic device experiences noticeable brightness jumps when switching from the cover photo to the video during the display of the moving photo. This results in a poor display quality of moving photos on the electronic device. Summary of the Invention

[0007] The purpose of this application is to provide a display method, apparatus, electronic device, storage medium, and program product that can improve the display effect of electronic devices on dynamic photos.

[0008] In a first aspect, embodiments of this application provide a display method, the method comprising: acquiring a first dynamic image and first information, the first dynamic image including a cover frame and a first video, the first information representing the brightness mapping relationship between the cover frame and the first video frame, the first video frame being a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold; adjusting the display brightness of at least one video frame in the first video based on the first information; wherein the brightness mapping relationship includes a high dynamic range (HDR) display brightness mapping relationship and a standard dynamic range (SDR) display brightness mapping relationship.

[0009] Secondly, embodiments of this application provide a display device, comprising: an acquisition module and a processing module. The acquisition module is configured to acquire a first dynamic image and first information. The first dynamic image includes a cover frame and a first video. The first information characterizes the brightness mapping relationship between the cover frame and the first video frame. The first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold. The processing module is configured to adjust the display brightness of at least one video frame in the first video based on the first information acquired by the acquisition module; wherein the brightness mapping relationship includes an HDR display brightness mapping relationship and an SDR display brightness mapping relationship.

[0010] Thirdly, embodiments of this application provide an electronic device including a processor and a memory, wherein the memory stores programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0011] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0012] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0013] In a sixth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method described in the first aspect.

[0014] In this embodiment, a first dynamic image and first information are acquired. The first dynamic image includes a cover frame and a first video. The first information represents the brightness mapping relationship between the cover frame and the first video frame. The first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold. Based on the first information, the display brightness of at least one video frame in the first video is adjusted. The brightness mapping relationship includes HDR display brightness mapping and SDR display brightness mapping. In this solution, when the first electronic device plays the first dynamic image, it can adjust the display brightness of each video frame in the first video based on the brightness mapping relationship between the cover frame and the first video frame whose shooting time interval with the cover frame is less than or equal to the first threshold. This makes the display brightness of each video frame in the first video consistent with the display brightness of the cover frame, thereby reducing the brightness jump when switching from the cover photo to the video screen. This improves the display effect of the electronic device on the dynamic image. Attached Figure Description

[0015] Figure 1 is a flowchart of one of the display methods provided in an embodiment of this application;

[0016] Figure 2 is a second flowchart of the display method provided in an embodiment of this application;

[0017] Figure 3 is a third flowchart of the display method provided in the embodiment of this application;

[0018] Figure 4 is a flowchart of the display method provided in the embodiment of this application;

[0019] Figure 5 is a flowchart of the display method provided in the embodiment of this application;

[0020] Figure 6 is a flowchart of the display method provided in the embodiment of this application;

[0021] Figure 7 is a schematic diagram of the structure of the display device provided in an embodiment of this application;

[0022] Figure 8 is a schematic diagram of the structure of the electronic device provided in an embodiment of this application;

[0023] Figure 9 is a schematic diagram of the hardware structure of the electronic device provided in an embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] The terms "at least one," "at least one," etc., in this application refer to any one, any two, or a combination of two or more of the included objects. For example, at least one of a, b, and c can mean: "a," "b," "c," "a and b," "a and c," "b and c," and "a, b, and c," where a, b, and c can be single or multiple. Similarly, "at least two" refers to two or more, and its meaning is similar to that of "at least one."

[0027] The display method, apparatus, electronic device, storage medium, and program product provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0028] The display method provided in this application can be applied to scenarios where the display brightness of the cover frame in a first dynamic image and the video frame in a first video needs to be consistent. For example, when a mobile phone takes a dynamic photo (also known as a Live Photo), which encapsulates a cover photo and a video, the display brightness of the cover photo and the video frame needs to be consistent when playing the dynamic photo.

[0029] Currently, when dynamic photos captured by electronic devices are displayed using HDR, the electronic device uses its built-in sensors and image processing algorithms to optimize the cover photo during capture, ensuring the best possible image quality. However, the video footage is captured directly from the camera preview, resulting in a faster capture speed. Consequently, the video quality is relatively lower due to the influence of the preview image quality and capture speed. Furthermore, HDR technology expands the display brightness range of dynamic photos, causing noticeable brightness jumps on the electronic device's screen when switching from a cover photo to a video.

[0030] The display method provided in this application embodiment acquires a first dynamic image and first information. The first dynamic image includes a cover frame and a first video. The first information represents the brightness mapping relationship between the cover frame and the first video frame. The first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold. Based on the first information, the display brightness of at least one video frame in the first video is adjusted. The brightness mapping relationship includes HDR display brightness mapping and SDR display brightness mapping. In this solution, when the first electronic device plays the first dynamic image, it can adjust the display brightness of each video frame in the first video based on the brightness mapping relationship between the cover frame and the first video frame whose shooting time interval with the cover frame is less than or equal to the first threshold. This makes the display brightness of each video frame in the first video consistent with the display brightness of the cover frame, thereby reducing the brightness jump when switching from the cover photo to the video screen. This improves the display effect of the electronic device on dynamic photos.

[0031] The display method provided in this application can be executed by a display device. Exemplarily, the display device can be an electronic device, or a component within that electronic device, such as an integrated circuit or a chip. The specific device can be determined according to actual usage requirements, and this application does not impose any limitations. The following description uses an electronic device as an example to illustrate the display method provided in this application.

[0032] Figure 1 shows a flowchart of a display method provided in an embodiment of this application. As shown in Figure 1, the display method provided in this embodiment may include the following steps 201 and 202.

[0033] Step 201: The first electronic device acquires the first dynamic image and the first information.

[0034] In this embodiment of the application, the first dynamic image includes a cover frame and a first video.

[0035] In this embodiment of the application, the first information represents the brightness mapping relationship between the cover frame and the first video frame.

[0036] In this embodiment of the application, the first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold.

[0037] It should be noted that the aforementioned first moving image is a novel photo format combining still images and video. The aforementioned cover frame is the static portion of the first moving image; it is a representative moment selected from the first moving image and used as a preview or cover. This cover frame can be an image frame corresponding to the moment the shooting button is clicked, such as the image frame captured at the instant the shooting button is pressed, or it can be the first frame of the first moving image, or it can be the image frame with the best shooting effect in the first moving image. In the aforementioned first moving image, the aforementioned first video records the dynamic images and sound of a brief period before and after the shooting moment.

[0038] It is understood that the above shooting effects may include, but are not limited to, at least one of the following: lighting, composition, color, sharpness, character movement, and character expression.

[0039] For example, taking a mobile phone as the first electronic device and a user taking pictures of fireworks, assuming that the user selects the dynamic photo shooting mode in the camera application of the mobile phone and clicks the shooting button at the moment when the fireworks in the sky are most complete and colorful, then the cover frame of the final dynamic photo can be the image of the fireworks in the most complete and colorful state, and the first video can be a video recording a few seconds before and after the shooting moment, such as a video of the fireworks rising, blooming and dissipating.

[0040] In this embodiment of the application, the brightness mapping relationship between the cover frame and the first video frame refers to the brightness mapping rule followed when the display brightness of the first video frame is adjusted to be consistent with the display brightness of the cover frame. Using this brightness mapping relationship can minimize the visual difference in brightness between the cover frame and the first video frame, thereby maintaining the consistency of brightness in the video or image sequence.

[0041] In this embodiment of the application, the above-mentioned brightness mapping relationship may include HDR display brightness mapping relationship and SDR display brightness mapping relationship.

[0042] It should be noted that the HDR display brightness mentioned above refers to the brightness of the image presented based on HDR technology. HDR technology can provide a wider brightness range and higher color detail, making the image closer to the real world as seen by the human eye. HDR display devices can present a higher peak brightness than SDR devices. The brightness range of HDR display devices is between 0 and 1000 nits or higher. This wide brightness range allows HDR images to better represent the details of highlights and shadows, enhancing contrast and color saturation. The SDR display brightness mentioned above refers to the brightness of the image presented based on SDR technology. SDR technology is a more traditional display technology used to describe the brightness range of a display device. SDR technology can provide a more realistic and lifelike image display effect, giving users a better visual experience. The brightness range of SDR display devices is typically between 0 and 100 nits. Within this brightness range, SDR display devices can accurately display the details and colors of an image.

[0043] It is understandable that the smaller the time interval between the shooting time of the first video frame and the shooting time of the cover frame, the higher the similarity between the content of the first video frame and the content of the cover frame, and the better the effect of adjusting the display brightness of each video frame in the first video based on the brightness mapping relationship between the first video frame and the cover frame.

[0044] Optionally, in this embodiment of the application, the first threshold can be 0.05 seconds.

[0045] Optionally, in this embodiment of the application, referring to FIG1 and FIG2, the above step 201 can be specifically implemented by the following step 201a.

[0046] Step 201a: The first electronic device acquires the first dynamic image and the first information from the second electronic device.

[0047] Optionally, in this embodiment of the application, the first electronic device and the second electronic device may be connected.

[0048] Optionally, in this embodiment, the connection between the first electronic device and the second electronic device may include, but is not limited to, any of the following: Bluetooth connection, wireless network connection, Universal Serial Bus (USB) connection, etc. The specific connection can be determined according to actual usage requirements, and this embodiment does not impose any limitations on this.

[0049] For example, if a first electronic device obtains a first dynamic image and first information from a second electronic device through an application, in this case, both the first and second electronic devices are connected to the network and rely on the Internet for data transmission, that is, rely on the Internet for the transmission of the first dynamic image and first information.

[0050] It is understood that the aforementioned first dynamic image can be a first dynamic image received by the first electronic device from the second electronic device. While receiving the first dynamic image from the second electronic device, the first electronic device can also receive first information related to the first dynamic image. The first information encapsulates information corresponding to the brightness mapping relationship between the cover frame and the first video frame of the first dynamic image.

[0051] It should be noted that the specific implementation method of the second electronic device acquiring the first information corresponding to the first dynamic image can be found in the following embodiment description, and will not be repeated here.

[0052] In this embodiment, the first electronic device can acquire a first dynamic image and first information from a second electronic device. When playing the first dynamic image, the first electronic device can adjust the display brightness of at least one video frame in the first video within the first dynamic image based on the first information, so that the display brightness of each video frame in the first video is consistent with the display brightness of the cover frame, thereby reducing the brightness jump when switching from the cover photo to the video screen. This improves the display effect of the electronic device on dynamic photos from other electronic devices.

[0053] Optionally, in this embodiment of the application, referring to FIG1 and FIG3, the above step 201 can be specifically implemented by the following steps 201b to 201d.

[0054] Step 201b: The first electronic device captures the first dynamic image.

[0055] Optionally, in this embodiment of the application, the first electronic device can capture the first dynamic image through an image acquisition module.

[0056] Optionally, in this embodiment, the image acquisition module may include, but is not limited to, any of the following: an infrared sensor, a lidar, a camera, etc. The specific module can be determined according to actual usage requirements, and this embodiment does not impose any limitations.

[0057] Step 201c: The first electronic device acquires the first brightness distribution information and the second brightness distribution information of the first dynamic image.

[0058] In this embodiment of the application, the first brightness distribution information represents the display brightness distribution of the cover frame.

[0059] In this embodiment of the application, the second brightness distribution information represents the display brightness distribution of the first video frame.

[0060] It is understood that the above-mentioned display brightness distribution refers to the brightness values ​​and distribution status of each part or pixel in the cover frame or the first video frame.

[0061] In this embodiment of the application, the above-mentioned display brightness distribution includes HDR display brightness distribution and SDR display brightness distribution.

[0062] It is understood that the aforementioned first brightness distribution information can characterize the HDR display brightness distribution and SDR display brightness distribution of the aforementioned cover frame. The aforementioned second brightness distribution information can characterize the HDR display brightness distribution and SDR display brightness distribution of the first video frame in the aforementioned first video.

[0063] Optionally, in this embodiment of the application, the cover frame includes an SDR image and a gain image. The step 201c above, "the first electronic device acquires the first brightness distribution information of the first dynamic image," can be specifically implemented through the following steps 201c1 and 201c2.

[0064] Step 201c1: The first electronic device performs an inverse transformation on the SDR image to obtain the SDR display brightness distribution.

[0065] Step 201c2: The first electronic device performs composite processing on the SDR image and the gain image to obtain the HDR display brightness distribution.

[0066] For example, if the cover frame includes an SDR image and a gain image, wherein the SDR image is a standard dynamic range image and the gain image stores the brightness and exposure data of the original image, the first electronic device can obtain the SDR display brightness distribution 01_SDR of the cover frame by performing an inverse Gamma transformation on the SDR image. The first electronic device can also obtain the HDR display brightness distribution 01_HDR by performing a synthesis process on the SDR image and the gain image.

[0067] Understandably, the inverse gamma transform is typically used to linearize images, converting a gamma-corrected nonlinear image signal back into a linear signal. Gamma correction is a nonlinear mapping used to adjust the brightness distribution of an image. It is often used to simulate the brightness perception characteristics of the human eye and to compensate for the nonlinear characteristics of display devices. After gamma correction, the brightness signal of the image is no longer linearly related to the true emissivity of the scene. The inverse gamma transform is the reverse process of gamma correction, used to convert the gamma-corrected image signal back into a linear signal. In image processing, linear signals are easier to process and analyze later. Furthermore, the gain map can map the brightness range of SDR to the brightness range of HDR, thereby achieving dynamic brightness adjustment. Therefore, by synthesizing SDR and gain images, the brightness distribution of HDR displays can be obtained.

[0068] Optionally, in this embodiment of the application, the cover frame includes an HDR image. The step 201c above, "the first electronic device acquires the first brightness distribution information of the first dynamic image," can be specifically implemented through the following steps 201c3 and 201c4.

[0069] Step 201c3: The first electronic device performs image conversion on the HDR image to obtain the SDR display brightness distribution.

[0070] Step 201c4: The first electronic device performs electro-optic signal conversion on the HDR image to obtain the HDR display brightness distribution.

[0071] For example, if the cover frame includes an HDR image, the first electronic device can obtain an SDR display brightness distribution 01_SDR by performing a standard HDR2SDR image conversion on the HDR image. The first electronic device can also obtain an HDR display brightness distribution 01_HDR by performing an electro-optic signal conversion on the HDR image.

[0072] As we can understand, HDR2SDR conversion refers to the process of converting HDR images or videos to SDR images or videos. This process involves a series of technical processing steps to ensure that HDR content can be displayed correctly and at high quality on SDR devices. Specific steps in HDR2SDR conversion may include: Color Gamut Conversion: Since HDR content uses a wider color gamut, while SDR content uses a narrower color gamut, the color gamut of the HDR content needs to be converted to the color gamut supported by the SDR content. Tone Mapping: Tone mapping is a crucial step in HDR2SDR conversion. It involves compressing the high brightness range of the HDR content to the brightness range that the SDR content can represent, while maintaining color and detail accuracy as much as possible. This process needs to take into account the visual perception characteristics of the human eye to ensure that the converted SDR content visually approximates the original HDR content. Quantization and Encoding: After converting HDR content to SDR content, quantization processing is required to convert continuous brightness values ​​into discrete brightness levels to adapt to the display capabilities of SDR devices. Finally, the converted SDR content is encoded for playback on standard display devices. In addition, the first electronic device performs electro-optic signal conversion on HDR images, which means using the Electrical-Optical Transfer Function (EOTF) to convert HDR images. EOTF is one of the key parameters in the HDR image display process, which determines the brightness and contrast of the image. It defines how the brightness value of the HDR image is converted into the light output value on the display.

[0073] It should be noted that the specific implementation of "the first electronic device acquiring the second brightness distribution information of the first dynamic image" in step 201c above, that is, acquiring the HDR display brightness distribution and SDR display brightness distribution of the first video frame in the first video above, can be found in the description of related technologies, and will not be repeated here.

[0074] Step 201d: The first electronic device determines the first information based on the first brightness distribution information and the second brightness distribution information.

[0075] Optionally, in this embodiment of the application, referring to FIG3 and FIG4, the above step 201d can be specifically implemented by the following steps 201d1 and 201d2.

[0076] Step 201d1: The first electronic device converts the first brightness distribution information into a first brightness cumulative distribution histogram and converts the second brightness distribution information into a second brightness cumulative distribution histogram.

[0077] Optionally, in this embodiment of the application, the first electronic device may first calculate a first brightness distribution histogram based on the first brightness distribution information, and then convert the first brightness distribution histogram into a first brightness cumulative distribution histogram.

[0078] Optionally, in this embodiment of the application, the first electronic device may first calculate a second brightness distribution histogram based on the second brightness distribution information, and then convert the second brightness distribution histogram into a second brightness cumulative distribution histogram.

[0079] For example, taking the first brightness distribution information as 01_SDR and 01_HDR, and the second brightness distribution information as 02_SDR and 02_HDR, 01_SDR represents the SDR display brightness distribution of the cover frame, 01_HDR represents the HDR display brightness distribution of the cover frame, 02_SDR represents the SDR display brightness distribution of the first video frame, and 02_HDR represents the HDR display brightness distribution of the first video frame. The first electronic device respectively counts the brightness distribution histograms H1_SDR, H1_HDR, H2_SDR, and H2_HDR corresponding to 01_SDR, 01_HDR, 02_SDR, and 02_HDR. The horizontal axis of the brightness distribution histogram is the nit value of the light signal, and the vertical axis is the number of pixels. The first electronic device then converts the luminance distribution histograms H1_SDR, H1_HDR, H2_SDR, and H2_HDR into luminance cumulative distribution histograms CDF1_SDR, CDF1_HDR, CDF2_SDR, and CDF2_HDR, respectively. The horizontal axis of the luminance cumulative distribution histogram is the nit value of the light signal, and the vertical axis is the cumulative number of pixels.

[0080] Step 201d2: The first electronic device determines the first information based on the brightness values ​​in the first cumulative brightness distribution histogram and the second cumulative brightness distribution histogram.

[0081] It should be noted that the horizontal axis of the cumulative brightness distribution histogram represents the nit value of the light signal, and the vertical axis represents the cumulative number of pixels, which is the sum of the number of pixels in the image whose brightness values ​​fall within a certain nit range. Electronic devices can convert the vertical axis into percentiles based on the cumulative number of pixels to more intuitively represent the relative frequency of the brightness distribution.

[0082] In this embodiment of the application, the first electronic device can determine the first information based on the brightness value in the first cumulative brightness distribution histogram and the brightness value in the second cumulative brightness distribution histogram corresponding to the same percentile.

[0083] For example, the first electronic device can obtain the optical signal nit values ​​of the abscissas corresponding to CDF1_SDR and CDF2_SDR at the same percentile to determine the SDR brightness mapping relationship {N1_SDR(i), N2_SDR(i)} between the cover frame and the first video frame, where N1_SDR(i) is the optical signal nit value of the abscissa corresponding to the i-th percentile in the SDR display brightness cumulative distribution histogram CDF1_SDR of the cover frame, and N2_SDR(i) is the optical signal nit value of the abscissa corresponding to the i-th percentile in the SDR display brightness cumulative distribution histogram CDF2_SDR of the first video frame. The optical signal nit value; and the optical signal nit value of the horizontal axis corresponding to CDF1_HDR and CDF2_HDR at the same percentile, to determine the HDR brightness mapping relationship {N1_HDR(i),N2_HDR(i)} between the cover frame and the first video frame, where N1_HDR(i) is the optical signal nit value of the horizontal axis corresponding to the i-th percentile in the cumulative distribution histogram of HDR display brightness of the cover frame CDF1_HDR, and N2_HDR(i) is the optical signal nit value of the horizontal axis corresponding to the i-th percentile in the cumulative distribution histogram of HDR display brightness of the first video frame CDF2_HDR.

[0084] It should be noted that the first electronic device may also use other forms to represent the brightness mapping relationship between the cover frame and the first video frame, for example: the function expression N1_HDR(i) = aN2_HDR(i) + b. Specifically, it can be determined according to the usage requirements, and this application embodiment does not impose any limitations on this.

[0085] Optionally, in this embodiment of the application, the first electronic device may perform smoothing processing on the SDR brightness mapping relationship {N1_SDR(i),N2_SDR(i)} between the cover frame and the first video frame, and the HDR brightness mapping relationship {N1_HDR(i),N2_HDR(i)} between the cover frame and the first video frame, and store the smoothed SDR brightness mapping relationship and HDR brightness mapping relationship, i.e., the first information, as metadata information in the first file.

[0086] Understandably, smoothing is a technique for reducing noise and irregularities in data or images, primarily achieved through blurring. Its purpose is to reduce noise in data or images while preserving their overall trend and characteristics as much as possible. In this embodiment, smoothing the brightness mapping relationship makes it smoother or more continuous, which helps improve the accuracy of subsequent adjustments to the display brightness of video frames.

[0087] Step 202: The first electronic device adjusts the display brightness of at least one video frame in the first video based on the first information.

[0088] In this embodiment of the application, the at least one video frame may be all the video frames in the first video, or it may be a portion of the video frames in the first video.

[0089] Optionally, in this embodiment of the application, the aforementioned video frames may be video frames played by the first electronic device, or they may be video frames in the first video whose display brightness difference with the cover frame is greater than or equal to a second threshold.

[0090] Optionally, in this embodiment of the application, referring to FIG1 and FIG5, the above step 202 can be specifically implemented by the following steps 202a and 202b.

[0091] Step 202a: The first electronic device determines the first target display brightness value based on the first information and the HDR display brightness value of the second video frame.

[0092] In this embodiment of the application, the second video frame is any one of the at least one video frame.

[0093] Optionally, in this embodiment of the application, the first electronic device can read the first information and obtain the HDR display brightness value of the second video frame, and determine the first target display brightness value, i.e. the target display brightness value of the second video frame, based on the first information and the HDR display brightness value of the second video frame.

[0094] For example, the first electronic device can read the SDR brightness mapping relationship {N1_SDR(i),N2_SDR(i)} and the HDR brightness mapping relationship {N1_HDR(i),N2_HDR(i)} between the cover frame and the first video frame from the first file.

[0095] In this embodiment of the application, after the first electronic device determines the brightness mapping relationship between the cover frame and the first video frame, that is, after the first information, the first electronic device can determine a first target display brightness value that matches the HDR display brightness value based on the HDR display brightness value of any video frame in the first video, that is, the second video frame, in the brightness mapping relationship, so as to adjust the final display brightness of the second video frame on the device.

[0096] Step 202b: The first electronic device adjusts the display brightness of the second video frame based on the first target display brightness value.

[0097] In this embodiment of the application, after the first electronic device determines the first target display brightness value of the second video frame, the first electronic device can adjust the display brightness of the second video frame according to the first target display brightness value, that is, display the second video frame on the screen of the first electronic device corresponding to the first target display brightness value.

[0098] It should be noted that steps 202a and 202b above are examples of adjusting one video frame (i.e., the second video frame) in at least one video frame, to illustrate the specific scheme for the first electronic device to adjust the display brightness of at least one video frame in step 202. The specific scheme for adjusting the display brightness of other video frames in the at least one video frame is the same as that for adjusting the second video frame, that is, the display brightness can also be adjusted by performing steps 202a and 202b above.

[0099] This application provides a display method. When a first electronic device plays a first dynamic image, it can adjust the display brightness of each video frame in the first video based on the brightness mapping relationship between the cover frame and the first video frames whose shooting time interval with the cover frame is less than or equal to a first threshold. This makes the display brightness of each video frame in the first video consistent with the display brightness of the cover frame, thereby reducing the brightness jump when switching from the cover photo to the video screen. This improves the display effect of the electronic device on dynamic images.

[0100] Optionally, in this embodiment of the application, referring to FIG1 and FIG6, before step 202 above, the display method provided in this embodiment of the application may further include the following steps 301 to 303.

[0101] Step 301: The first electronic device calculates the interpolation coefficients based on the HDR margin of the first electronic device.

[0102] In this embodiment, the aforementioned HDR margin is the ratio of the current screen brightness of the first electronic device to the screen reference white brightness, indicating the ability of the first electronic device screen to further increase brightness and contrast when displaying HDR content. This HDR margin depends on the screen's hardware characteristics, the current display settings of the first electronic device, and the content being displayed.

[0103] Understandably, the first electronic device can measure or estimate the HDR headroom of the current screen display through its display system or specialized sensors. Several factors must be considered when obtaining the HDR headroom, such as the maximum brightness of the first electronic device's screen, the average brightness of the current display, and the brightness distribution of the content.

[0104] In this embodiment of the application, the first electronic device can calculate an interpolation coefficient based on the obtained HDR margin. This interpolation coefficient is used to adjust the display brightness of the cover frame to ensure that the screen's HDR capabilities are fully utilized while maintaining image quality.

[0105] For example, in this embodiment of the application, after the first electronic device obtains the HDR margin, it can use the following formula (1) to calculate the interpolation coefficients:

[0106] Where w represents the interpolation coefficient, headroom represents the HDR margin, N1_HDR(end) represents the nit value of the light signal corresponding to the largest percentile in the cumulative distribution histogram of the HDR display brightness distribution of the cover frame, and N1_SDR(end) represents the nit value of the light signal corresponding to the largest percentile in the cumulative distribution histogram of the SDR display brightness distribution of the cover frame.

[0107] Step 302: The first electronic device determines the second target display brightness of the cover frame based on the interpolation coefficient.

[0108] Optionally, in this embodiment of the application, the first electronic device may calculate the final display brightness of the cover frame on the screen of the electronic device after taking into account the influence of HDR margin, based on the interpolation coefficient.

[0109] For example, in this embodiment of the application, the electronic device can use the following formula (2) to calculate the final display brightness of the cover frame: N1_O(i)=N1_HDR(i)×w+N1_SDR(i)×(1-w); (2)

[0110] Wherein, N1_O(i) represents the final display brightness of the cover frame, that is, the second target display brightness of the cover frame; N1_HDR(i) represents the nit value of the light signal corresponding to the i-th percentile of the cumulative distribution histogram of the HDR display brightness distribution of the cover frame; and N1_SDR(i) represents the nit value of the light signal corresponding to the i-th percentile of the cumulative distribution histogram of the SDR display brightness distribution of the cover frame.

[0111] Step 303: The first electronic device updates the first information based on the brightness of the second target display.

[0112] Optionally, in this embodiment of the application, the first electronic device can replace N1_HDR(i) in the HDR brightness mapping relationship {N1_HDR(i),N2_HDR(i)} with the calculated second target display brightness N1_O(i) to obtain the updated brightness mapping relationship, that is, update the first information.

[0113] Optionally, in this embodiment of the application, the first electronic device may also use the calculated second target display brightness N1_O(i) and N2_O(i) to generate a new brightness mapping relationship {N1_O(i), N2_O(i)}, where N2_O(i) is equal to N2_HDR(i), and update the brightness mapping relationship to the first information to realize the update of the first information.

[0114] Optionally, in this embodiment of the application, after the first electronic device updates the first information, the first electronic device can use the following formula (3) to calculate the final display brightness of any video frame E2 in the first video: N2=interp1(N2_O,N1_O,E2_EOTF); (3)

[0115] Where N2 represents the final display brightness of video frame E2, which is the first target display brightness value mentioned above. N2_O is the same as N2_HDR(i). N1_O represents the final display brightness of the cover frame. E2_EOTF represents the brightness value obtained after performing EOTF on video frame E2.

[0116] It should be noted that the interp1 function is a one-dimensional interpolation function in MATLAB, used to perform interpolation calculations between given data points. In this specific expression, it is used to adjust or transform another set of data, namely the brightness value of E2_EOTF, based on a known input-output relationship, namely the relationship between N2_O and N1_O. The following is an explanation of each part of formula (3):

[0117] interp1: A one-dimensional linear interpolation function in MATLAB. Its basic usage is interp1(X,Y,Xq), where X and Y are the x and y coordinates of known data points, Xq is the point to be interpolated, and the function returns the interpolation result corresponding to Xq.

[0118] N2_O: Represents a set of known brightness values ​​or output values, corresponding to the input value N1_O. In the above embodiment, N2_O and N1_O constitute a brightness mapping relationship {N1_O(i), N2_O(i)}, that is, given a value of N1_O, the electronic device can determine the corresponding value of N2_O according to the brightness mapping relationship.

[0119] N1_O: Represents another set of known input values ​​corresponding to N2_O.

[0120] E2_EOTF: Represents the dataset that requires brightness conversion or adjustment. This data consists of the brightness values ​​of the video frames in the first video to be played, which need to be adjusted based on the relationship between N2_O and N1_O. EOTF is an electro-optical conversion function, commonly used to describe the conversion process from digital video signals to display brightness. E2_EOTF represents the brightness value obtained after performing some EOTF processing on video frame E2.

[0121] It can be understood that the expression `interp1(N2_O,N1_O,E2_EOTF)` represents the interpolation calculation performed on each luminance value in `E2_EOTF` based on the mapping relationship between `N2_O` and `N1_O`, to obtain the converted luminance value, which is the final display luminance value of the video frame E2 of the first video on the electronic device screen, also known as the first target display luminance value. Therefore, the first electronic device can adjust the display luminance of video frame E2 based on this first target display luminance value. This process can be understood as follows: for each luminance value in `E2_EOTF`, find its closest value in `N2_O`, and then, based on the luminance mapping relationship, find the corresponding value in `N1_O` according to this closest value. This corresponding value is the converted luminance value, i.e., the final display luminance value of the video frame E2 of the first video on the electronic device screen.

[0122] It should be noted that when the first electronic device performs the above steps 301 to 303, the first information in step 202 is the updated first information, that is, the updated first information obtained through steps 301 to 303.

[0123] In this embodiment, the first electronic device can link the display of the cover frame and video frame in the HDR dynamic image, and takes into account the HDR margin of the first electronic device, that is, it takes into account the real-time display capability of the first electronic device and the industry standard of HDR dynamic images. It can significantly improve the consistency of brightness between the cover frame and the video frame during playback. At the same time, the content of the cover frame and the video frame itself can be changed at the shooting end. Instead, metadata is generated based on the results in a statistical manner. That is, the first information representing the brightness mapping relationship between the cover frame and the video frame. The system has low complexity, lightweight algorithm, and is easy to implement. Furthermore, the first electronic device can generate a brightness mapping curve based on the metadata, similar to the current dynamic HDR video method, which is simple to implement and has low overhead.

[0124] It should be noted that each of the above method embodiments, or various possible implementations of each method embodiment, can be executed individually or in combination of any two or more. The specific implementation can be determined according to actual usage requirements, and some embodiments of this application do not impose such restrictions.

[0125] The display method provided in this application can be executed by a display device. This application uses a display device executing the display method as an example to illustrate the display device provided in this application.

[0126] Figure 7 illustrates a possible structural schematic diagram of a display device involved in some embodiments of this application. As shown in Figure 7, the display device 20 may include an acquisition module 21 and a processing module 22. The acquisition module 21 is used to acquire a first dynamic image and first information. The first dynamic image includes a cover frame and a first video. The first information characterizes the brightness mapping relationship between the cover frame and the first video frame. The first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold. The processing module 22 is used to adjust the display brightness of at least one video frame in the first video based on the first information acquired by the acquisition module 21. The brightness mapping relationship includes an HDR display brightness mapping relationship and an SDR display brightness mapping relationship.

[0127] In one possible implementation, the acquisition module 21 is specifically used to acquire the first dynamic image and the first information from the second electronic device.

[0128] In one possible implementation, the acquisition module 21 is specifically used to capture the first dynamic image; and to acquire first brightness distribution information and second brightness distribution information of the first dynamic image, wherein the first brightness distribution information represents the display brightness distribution of the cover frame and the second brightness distribution information represents the display brightness distribution of the first video frame; and to determine the first information based on the first brightness distribution information and the second brightness distribution information; wherein the display brightness distribution includes HDR display brightness distribution and SDR display brightness distribution.

[0129] In one possible implementation, the acquisition module 21 is specifically used to convert the first brightness distribution information into a first brightness cumulative distribution histogram and the second brightness distribution information into a second brightness cumulative distribution histogram; and to determine the first information based on the brightness values ​​in the first brightness cumulative distribution histogram and the brightness values ​​in the second brightness cumulative distribution histogram.

[0130] In one possible implementation, the cover frame includes an SDR image and a gain image. Specifically, the acquisition module 21 is used to perform an inverse transform on the SDR image to obtain an SDR display brightness distribution; and to perform a composite processing of the SDR image and the gain image to obtain an HDR display brightness distribution.

[0131] In one possible implementation, the cover frame includes an HDR image. Specifically, the acquisition module 21 is used to perform image conversion on the HDR image to obtain an SDR display brightness distribution; and to perform electro-optic signal conversion on the HDR image to obtain an HDR display brightness distribution.

[0132] In one possible implementation, the processing module 22 is specifically configured to determine a first target display brightness value based on the first information and the HDR display brightness value of the second video frame; and to adjust the display brightness of the second video frame based on the first target display brightness value; wherein the second video frame is any one of the at least one video frame.

[0133] In one possible implementation, the processing module 22 is further configured to calculate interpolation coefficients based on the HDR margin of the display device 20 before adjusting the display brightness of at least one video frame in the first video based on the first information; and to determine the second target display brightness of the cover frame based on the interpolation coefficients; and to update the first information based on the second target display brightness.

[0134] This application provides a display device that, when playing a first moving image, can adjust the display brightness of each video frame in the first video based on the brightness mapping relationship between the cover frame and the first video frames whose shooting time interval with the cover frame is less than or equal to a first threshold. This makes the display brightness of each video frame in the first video consistent with the display brightness of the cover frame, thereby reducing the brightness jump when switching from the cover photo to the video screen. This improves the display effect of the display device on moving images.

[0135] The display device in this application embodiment can be an electronic device or a component within an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television set (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the scope of the device.

[0136] The display device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0137] The display device provided in this application can implement the various processes implemented in the various embodiments of the above display method. To avoid repetition, it will not be described again here.

[0138] Optionally, as shown in FIG8, this application embodiment also provides an electronic device 800, including a processor 801 and a memory 802. The memory 802 stores a program or instructions that can run on the processor 801. When the program or instructions are executed by the processor 801, they implement the various steps of the various embodiments of the above-described image display method and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0139] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0140] Figure 9 is a schematic diagram of the hardware structure of an electronic device that implements an embodiment of this application.

[0141] The electronic device 100 includes, but is not limited to, components such as: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, and processor 110.

[0142] Those skilled in the art will understand that the electronic device 100 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. The electronic device structure shown in Figure 9 does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0143] The processor 110 is configured to acquire a first dynamic image and first information. The first dynamic image includes a cover frame and a first video. The first information represents the brightness mapping relationship between the cover frame and the first video frame. The first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold. The processor 110 is also configured to adjust the display brightness of at least one video frame in the first video based on the first information. The brightness mapping relationship includes an HDR display brightness mapping relationship and an SDR display brightness mapping relationship.

[0144] Optionally, the radio frequency unit 101 is used to acquire the first dynamic image and the first information from the second electronic device.

[0145] Optionally, the processor 110 is specifically configured to capture the first dynamic image; and to acquire first brightness distribution information and second brightness distribution information of the first dynamic image, wherein the first brightness distribution information represents the display brightness distribution of the cover frame and the second brightness distribution information represents the display brightness distribution of the first video frame; and to determine the first information based on the first brightness distribution information and the second brightness distribution information; wherein the display brightness distribution includes HDR display brightness distribution and SDR display brightness distribution.

[0146] Optionally, the processor 110 is specifically configured to convert the first brightness distribution information into a first brightness cumulative distribution histogram and convert the second brightness distribution information into a second brightness cumulative distribution histogram; and to determine the first information based on the brightness values ​​in the first brightness cumulative distribution histogram and the brightness values ​​in the second brightness cumulative distribution histogram.

[0147] Optionally, the aforementioned cover frame includes an SDR image and a gain image. Specifically, the processor 110 is configured to perform an inverse transform on the SDR image to obtain an SDR display brightness distribution; and to perform a composite processing on the SDR image and the gain image to obtain an HDR display brightness distribution.

[0148] Optionally, the cover frame includes an HDR image. The processor 110 is specifically configured to perform image conversion on the HDR image to obtain an SDR display brightness distribution; and to perform electro-optic signal conversion on the HDR image to obtain an HDR display brightness distribution.

[0149] Optionally, the processor 110 is specifically configured to determine a first target display brightness value based on the first information and the HDR display brightness value of the second video frame; and to adjust the display brightness of the second video frame based on the first target display brightness value; wherein the second video frame e is any one of the at least one video frame.

[0150] Optionally, the processor 110 is further configured to calculate interpolation coefficients based on the HDR margin of the electronic device 100 before adjusting the display brightness of at least one video frame in the first video based on the first information; and to determine the second target display brightness of the cover frame based on the interpolation coefficients; and to update the first information based on the second target display brightness.

[0151] This application provides an electronic device that, when playing a first dynamic image, can adjust the display brightness of each video frame in the first video based on the brightness mapping relationship between the cover frame and the first video frames whose shooting time interval with the cover frame is less than or equal to a first threshold. This makes the display brightness of each video frame in the first video consistent with the display brightness of the cover frame, thereby reducing the brightness jump when switching from the cover photo to the video screen. This improves the display effect of the electronic device on dynamic images.

[0152] The electronic device provided in this application embodiment can implement all the processes implemented in the above method embodiments and achieve the same technical effects. To avoid repetition, it will not be described again here. The beneficial effects of the various implementation methods in this embodiment can be found in the beneficial effects of the corresponding implementation methods in the above method embodiments. To avoid repetition, it will not be described again here.

[0153] It should be understood that, in this embodiment, the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0154] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 109 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 109 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0155] Processor 110 may include one or more processing units; optionally, processor 110 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 110.

[0156] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described display method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0157] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0158] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described display method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0159] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0160] This application provides a computer program product that is stored in a storage medium and executed by at least one processor to implement the various processes shown in the above-described method embodiments, and can achieve the same technical effects. To avoid repetition, it will not be described again here.

[0161] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0162] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0163] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A display method applied to a first electronic device, comprising: Acquire a first dynamic image and first information. The first dynamic image includes a cover frame and a first video. The first information represents the brightness mapping relationship between the cover frame and the first video frame. The first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold. Based on the first information, adjust the display brightness of at least one video frame in the first video; The brightness mapping relationship includes the high dynamic range (HDR) display brightness mapping relationship and the standard dynamic range (SDR) display brightness mapping relationship.

2. The method of claim 1, wherein, The acquisition of the first dynamic image and the first information includes: The first dynamic image and the first information are acquired from the second electronic device.

3. The method according to claim 1, wherein, The acquisition of the first dynamic image and the first information includes: The first dynamic image was captured; Obtain first brightness distribution information and second brightness distribution information of the first dynamic image, wherein the first brightness distribution information represents the display brightness distribution of the cover frame and the second brightness distribution information represents the display brightness distribution of the first video frame; The first information is determined based on the first brightness distribution information and the second brightness distribution information; The display brightness distribution includes HDR display brightness distribution and SDR display brightness distribution.

4. The method according to claim 3, wherein, The step of determining the first information based on the first brightness distribution information and the second brightness distribution information includes: The first brightness distribution information is converted into a first brightness cumulative distribution histogram, and the second brightness distribution information is converted into a second brightness cumulative distribution histogram. The first information is determined based on the brightness values ​​in the first cumulative brightness distribution histogram and the second cumulative brightness distribution histogram.

5. The method according to claim 3, wherein, The cover frame includes an SDR image and a gain image; The step of obtaining the first brightness distribution information of the first dynamic image includes: Perform an inverse transform on the SDR image to obtain the SDR display brightness distribution; The SDR image and the gain image are combined to obtain the HDR display brightness distribution.

6. The method according to claim 3, wherein, The cover frame includes an HDR image; The step of obtaining the first brightness distribution information of the first dynamic image includes: The HDR image is converted to obtain the SDR display brightness distribution; The HDR image is converted into an electro-optical signal to obtain the HDR display brightness distribution.

7. The method according to claim 1, wherein, Adjusting the display brightness of at least one video frame in the first video based on the first information includes: Based on the first information and the HDR display brightness value of the second video frame, a first target display brightness value is determined; Based on the first target display brightness value, adjust the display brightness of the second video frame; The second video frame is any one of the at least one video frames.

8. The method according to claim 1, wherein, Before adjusting the display brightness of at least one video frame in the first video based on the first information, the method further includes: Interpolation coefficients are calculated based on the HDR margin of the first electronic device; Based on the interpolation coefficients, the second target display brightness of the cover frame is determined; The first information is updated based on the brightness of the second target display.

9. A display device, comprising: Acquisition module and processing module; The acquisition module is used to acquire a first dynamic image and first information. The first dynamic image includes a cover frame and a first video. The first information represents the brightness mapping relationship between the cover frame and the first video frame. The first video frame is a video frame in the first video whose shooting time interval with the cover frame is less than or equal to a first threshold. The processing module is used to adjust the display brightness of at least one video frame in the first video based on the first information obtained by the acquisition module. The brightness mapping relationship includes the HDR display brightness mapping relationship and the SDR display brightness mapping relationship.

10. The apparatus according to claim 9, wherein, The acquisition module is specifically used to acquire the first dynamic image and the first information from the second electronic device.

11. The apparatus according to claim 9, wherein, The acquisition module is specifically used to capture the first dynamic image; and Obtain first brightness distribution information and second brightness distribution information of the first dynamic image, wherein the first brightness distribution information represents the display brightness distribution of the cover frame and the second brightness distribution information represents the display brightness distribution of the first video frame; as well as, The first information is determined based on the first brightness distribution information and the second brightness distribution information; The display brightness distribution includes HDR display brightness distribution and SDR display brightness distribution.

12. The apparatus according to claim 11, wherein, The acquisition module is specifically configured to convert the first brightness distribution information into a first brightness cumulative distribution histogram, and convert the second brightness distribution information into a second brightness cumulative distribution histogram; and... The first information is determined based on the brightness values ​​in the first cumulative brightness distribution histogram and the second cumulative brightness distribution histogram.

13. The apparatus according to claim 11, wherein, The cover frame includes an SDR image and a gain image; The acquisition module is specifically used to perform an inverse transform on the SDR image to obtain the SDR display brightness distribution; and... The SDR image and the gain image are combined to obtain the HDR display brightness distribution.

14. The apparatus according to claim 11, wherein, The cover frame includes an HDR image; The acquisition module is specifically used to perform image conversion on the HDR image to obtain the SDR display brightness distribution; and... The HDR image is converted into an electro-optical signal to obtain the HDR display brightness distribution.

15. The apparatus according to claim 9, wherein, The processing module is specifically configured to determine a first target display brightness value based on the first information and the HDR display brightness value of the second video frame; and, Based on the first target display brightness value, adjust the display brightness of the second video frame; The second video frame is any one of the at least one video frames.

16. The apparatus according to claim 9, wherein, The processing module is further configured to calculate interpolation coefficients based on the HDR margin of the display device before adjusting the display brightness of at least one video frame in the first video based on the first information. as well as, Based on the interpolation coefficients, the second target display brightness of the cover frame is determined; and, The first information is updated based on the brightness of the second target display.

17. An electronic device comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the display method as claimed in any one of claims 1 to 8.

18. A computer-readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the display method as described in any one of claims 1 to 8.

19. A computer program product stored in a storage medium, the program product being executed by at least one processor to implement the display method as described in any one of claims 1 to 8.

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