WO2019153723A1 - Procédé et dispositif d'affichage de trames vidéo, télévision et support de stockage - Google Patents

Procédé et dispositif d'affichage de trames vidéo, télévision et support de stockage Download PDF

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Publication number
WO2019153723A1
WO2019153723A1 PCT/CN2018/102820 CN2018102820W WO2019153723A1 WO 2019153723 A1 WO2019153723 A1 WO 2019153723A1 CN 2018102820 W CN2018102820 W CN 2018102820W WO 2019153723 A1 WO2019153723 A1 WO 2019153723A1
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Prior art keywords
frame image
decoded picture
resolution
display
pixel
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PCT/CN2018/102820
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English (en)
Chinese (zh)
Inventor
杨钢
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深圳创维－Rgb电子有限公司
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Publication of WO2019153723A1 publication Critical patent/WO2019153723A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440227—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by decomposing into layers, e.g. base layer and one or more enhancement layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping

Definitions

  • Embodiments of the present disclosure relate to image processing technologies, for example, to a video picture display method, apparatus, television, and storage medium.
  • the picture playback technology is generally displayed in the graphics layer, and the resolution of the graphics layer generally does not exceed 1920*1080. This is because of the limitation of the bandwidth of the system on chip (SOC) and the double data rate (DDR). If the resolution of the graphics layer is too high, the bandwidth of the system will be insufficient. The system is stuck, the operation experience is slow, and so on. Therefore, the graphics layer resolution of the TV system is mostly limited to 1920*1080. In order to match the resolution of the picture display with the resolution of the graphics layer, the display resolution of the picture is limited to the level of 1920*1080. However, with the advancement of camera technology, the resolution of photos taken by shooting devices including mobile phones has far exceeded 1920*1080. These images can only be displayed on the TV by dropping some pixels, which will lose a lot of image details and can not achieve the best display.
  • SOC system on chip
  • DDR double data rate
  • the video picture display method, device, television set and storage medium provided by the embodiments of the present disclosure solve the problem that the television cannot display all the pixels of the high resolution picture in the related art.
  • an embodiment of the present disclosure provides a video screen display method, including:
  • the frame images of the display buffer area are cyclically played a preset number of times in the video layer according to the playback order.
  • the playing order is determined according to a position of a pixel of the frame picture in the decoded picture.
  • the playing sequence is determined according to a position of a pixel of the frame picture in the decoded picture, and includes:
  • the playing order is determined according to a position of a start pixel of the frame picture in the decoded picture.
  • the acquiring the decoded picture of the current video picture comprises:
  • the current picture is decoded into a decoded picture by a picture decoder, and the decoded picture is stored in a data buffer.
  • the sampling interval includes a width sampling interval and a height sampling interval
  • the determining a sampling interval according to a ratio of a resolution of the decoded picture to a screen resolution of the display screen includes:
  • the ratio between the height resolution of the decoded picture and the screen height resolution of the display screen is rounded up, and as the height ratio, the height ratio is decremented by one as the height sampling interval.
  • the number of display buffers is determined based on a product of the width ratio and the height ratio.
  • the acquiring, by the sampling interval, a plurality of pixel combinations of the decoded picture, and storing the frame image determined by each of the pixel combinations in a display buffer includes:
  • Frame images determined by different combinations of pixels are stored in different display buffers.
  • the video layer before the video layer periodically plays the frame image of the display buffer area in the playback order, the video layer further includes:
  • the preset number of times is determined according to the screen refresh rate and the number of display buffer areas.
  • the frame image of the display buffer area is cyclically played by a preset number of times in a video layer according to a play sequence, including:
  • the effective frame image is cyclically played in the video layer by the preset number of times.
  • the frame picture of the display buffer area is played back a preset number of times according to a play sequence, including:
  • a frame image having a pixel number smaller than a preset effective pixel number is used as an invalid frame image, and a frame image having a pixel number greater than or equal to the preset effective pixel is used as a valid frame image;
  • the effective frame image is cyclically played in the video layer by the preset number of times.
  • the synthesizing the invalid frame image and the previous adjacent image of the invalid frame image based on a preset synthesis rule includes:
  • the pixel value of the pixel of the previous adjacent image of the invalid frame image is replaced with the pixel value of the pixel of the invalid frame image.
  • the method further includes:
  • the decoded picture is played through the video layer.
  • the frame image of the display buffer area is cyclically played by a preset number of times in a video layer according to a play sequence, including:
  • an embodiment of the present disclosure further provides a video screen display device, where the device includes:
  • Decoding a picture obtaining module configured to obtain a decoded picture of the current video picture
  • a parameter determining module configured to determine a sampling interval according to a ratio of a resolution of the decoded picture to a screen resolution of the display screen when a resolution of the decoded picture is greater than a screen resolution of the display screen;
  • a frame image obtaining module configured to acquire a plurality of pixel combinations of the decoded picture according to the sampling interval, and store a frame image determined by each of the pixel combinations in a display buffer area;
  • the playing module is configured to: cyclically play the frame image of the display buffer area in the video layer for a preset number of times according to the playing sequence.
  • an embodiment of the present disclosure further provides a television set, where the television includes:
  • One or more processors are One or more processors;
  • a storage device configured to store one or more programs
  • the one or more processors When the one or more programs are executed by the one or more processors, the one or more processors implement the video picture display method described above.
  • an embodiment of the present disclosure further provides a storage medium including computer executable instructions for performing the video picture display method described above when executed by a computer processor.
  • the technical solution of the video picture display method when the resolution of the decoded picture is greater than the screen resolution of the display screen, determining the sampling interval according to the ratio of the resolution of the decoded picture to the screen resolution of the display screen; Obtaining a plurality of pixel combinations of the decoded picture, and storing the frame image determined by each pixel combination in the display buffer area, so that the pixels of the decoded picture are distributed in the plurality of frame images, that is, the detailed information of the decoded picture is distributed in multiple
  • determining the playing order of the frame image, according to the playing sequence the frame image of the display buffer area is cyclically played a preset number of times in the video layer, and the detailed information of the decoded picture is presented to the viewer through the cyclic playback of the plurality of frame images.
  • the loop playback of the frame image through the video layer can display more detailed information, which is beneficial to enhance the user experience
  • FIG. 1 is a flowchart of a video screen display method according to Embodiment 1 of the present disclosure
  • FIG. 2 is a flowchart of a method for determining an effective frame image according to Embodiment 2 of the present disclosure
  • FIG. 3 is a flowchart of another effective frame image determining method according to Embodiment 2 of the present disclosure.
  • FIG. 4 is a flowchart of a frame image display method according to Embodiment 3 of the present disclosure.
  • FIG. 5 is a structural block diagram of a video screen display apparatus according to Embodiment 4 of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a television set according to Embodiment 5 of the present disclosure.
  • FIG. 1 is a flowchart of a video screen display method according to Embodiment 1 of the present disclosure.
  • the technical solution of the present embodiment is particularly suitable for the case of displaying a high resolution picture exceeding the resolution of a display screen through a television set.
  • the method may be performed by a video picture display device provided by an embodiment of the present disclosure, and the device may be implemented in a software and/or hardware manner and configured to be applied in a processor. As shown in FIG. 1, the method includes the following steps:
  • the video picture of the current video is obtained, and then decoded by the picture decoder to generate a decoded picture, and then the decoded picture is stored in the data buffer.
  • the sampling interval of this embodiment includes a width sampling interval and a height sampling interval, and the ratio between the width resolution of the decoded picture and the screen width resolution of the display screen is rounded up as a width ratio, and the width ratio is decremented by one as a width sampling. Interval; the ratio between the height resolution of the decoded picture and the screen height resolution of the display is rounded up, and as the height ratio, the height ratio is decremented by one as the height sampling interval.
  • the sampling interval After the sampling interval is determined, a plurality of pixel combinations of the decoded picture are obtained according to the sampling interval, and each pixel combination corresponds to one frame image. Since the decoded picture is a two-dimensional plane, the sampling interval in this embodiment includes a high sampling interval and a width sampling. The pixel combination of the decoded picture is obtained by the combination of the width sampling interval and the height sampling interval to form a plurality of different frame images, and then the frame image is stored in the display buffer. In one embodiment, different frame images are stored in different display buffers, and the number of display buffers can be determined by the product of the width ratio and the height ratio.
  • the frame image of the display buffer area is cyclically played a preset number of times in the video layer according to the playing sequence.
  • the playing order of each frame image is determined, and the playing order is generally determined according to the position of the pixels of the frame image in the decoded picture. For example, it is determined according to the position of the start pixel of the frame image in the decoded picture image.
  • the frame image stored in the display buffer is played back in the video layer.
  • the screen refresh rate of the display screen is first obtained; and the preset cycle number (ie, the preset number of times) is determined according to the screen refresh rate and the number of display buffer areas.
  • the preset multiple of the screen refresh rate is used as the frame image switching speed.
  • the screen refresh rate is N
  • the number of frame images that is, the number of display buffer areas in which different frame images are buffered
  • P a preset multiple.
  • the technical solution of the video picture display method provided in this embodiment when the resolution of the decoded picture is greater than the screen resolution of the display screen, determining the sampling interval according to the ratio of the resolution of the decoded picture to the screen resolution of the display screen; Obtaining a plurality of pixel combinations of the decoded picture, and storing the frame image determined by each pixel combination in the display buffer area, so that the pixels of the decoded picture are distributed in the plurality of frame images, thereby distributing the detailed information of the decoded picture to the plurality of frames.
  • the frame image of the display buffer area is cyclically played in the video layer for a preset number of times, and the detailed information of the decoded picture is presented to the viewer through the cyclic playback of the plurality of frame images, which is limited by the graphics layer resolution compared to the related playback technology.
  • the loop playback of the frame image in the video layer can display the detailed information of the decoded picture, and then display the detailed information of the video picture, which is beneficial to enhance the user experience.
  • the frame layer of the display buffer area is cyclically played by a predetermined number of times in the video layer according to the playing order.
  • an optional implementation manner of the method includes:
  • a frame image with a number of pixels greater than or equal to a preset effective number of pixels is used as an effective frame image.
  • the frame image Before the frame image is played, it is generally determined whether the number of pixels of the frame image is greater than or equal to the preset effective number of pixels. If the number of pixels of the frame image is greater than or equal to the preset effective number of pixels, the frame image is a valid frame image, if the frame If the number of pixels of the image is less than the preset effective number of pixels, the frame image is an invalid frame image.
  • the screen resolution is taken as the preset effective pixel number, that is, the frame image whose pixel number is smaller than the screen resolution is regarded as the invalid frame image, and the frame image whose pixel number is greater than or equal to the screen resolution is regarded as valid. Frame image.
  • S2042 The frame image of the display buffer area is cyclically played by a preset number of times in the video layer according to the playing order.
  • the playback order of the effective frame images is determined according to the positions of the pixels of the frame image at the decoded picture, and then the effective frame images are played back in the playback order in the playback order for the preset number of times. In an embodiment, only playing the effective frame image is selected to ensure a better visual effect.
  • an optional implementation manner of the method includes:
  • S2045 Synthesize an invalid frame image and a previous adjacent frame image of the invalid frame image according to a preset synthesis rule to update a previous adjacent frame image of the invalid frame image.
  • the invalid frame image has a small number of pixels and cannot be played directly, or it can bring a poor visual experience to the viewer.
  • the embodiment replaces the pixels of the previous adjacent frame image of the invalid frame image with the pixels of the invalid frame image. For example, when the invalid frame image is the last frame image, the invalid frame image is combined with the second last frame image. At this time, the second pixel of the second frame image is the pixel of itself, and some of the pixels are the pixels of the invalid frame image. . By discarding some of the pixels of the penultimate frame image, more details of the decoded picture are preserved to enhance the visual effect.
  • S2046 Cycle the effective frame image to a preset number of times in the video layer according to the playing sequence.
  • FIG. 4 is a flowchart of a frame image display method according to Embodiment 3 of the present disclosure.
  • the embodiment of the present disclosure optimizes the number of times the frame image of the display buffer area is played back in the video layer in the playback order according to any of the above embodiments. As shown in FIG. 4, the method includes:
  • S3042 Perform image post-processing on the frame image at the video layer to update the frame image, wherein the image post-processing includes grayscale adjustment and contrast adjustment.
  • the present embodiment directly processes the frame image to be played at the video layer.
  • the frame image can be selected for processing, and then the effective image is determined, or the effective image can be determined first, and then the effective image is post-processed.
  • Post processing typically includes grayscale adjustment, contrast adjustment, sharpness processing, color adjustment, and brightness adjustment.
  • the frame image before the frame image is played, it is post-processed in the video layer, and the image quality of the frame image is improved by post-processing, thereby improving the visual effect when the frame image is played.
  • FIG. 5 is a structural block diagram of a video screen display apparatus according to Embodiment 4 of the present disclosure.
  • the device is configured to perform the video picture display method provided by any of the foregoing embodiments, and the control device may be implemented by software or hardware.
  • the device includes:
  • the decoded picture obtaining module 11 is configured to acquire a decoded picture of the current video picture
  • the parameter determining module 12 is configured to: when the resolution of the decoded picture is greater than the screen resolution of the display screen, determine a sampling interval according to a ratio of a resolution of the decoded picture to a screen resolution of the display screen;
  • the frame image obtaining module 13 is configured to acquire a plurality of pixel combinations of the decoded picture according to the sampling interval, and store the frame image determined by each of the pixel combinations in a display buffer area;
  • the playing module 14 is configured to cyclically play the frame image of the display buffer area for a preset number of times in the video layer according to the playing order.
  • the sampling interval is determined according to the ratio of the resolution of the decoded picture to the screen resolution of the display screen; Obtaining a plurality of pixel combinations of the decoded picture, and storing the frame image determined by each pixel combination in the display buffer area, so that the pixels of the decoded picture are distributed in the plurality of frame images, thereby distributing the detailed information of the decoded picture to the plurality of frames.
  • the frame image of the display buffer area is cyclically played in the video layer for a preset number of times, and the detailed information of the decoded picture is presented to the viewer through the cyclic playback of the plurality of frame images, which is limited by the graphics layer resolution compared to the related playback technology.
  • the loop playback of the frame image in the video layer can display the detailed information of the decoded picture, and then display the detailed information of the video picture, which is beneficial to enhance the user experience.
  • the video picture display device provided by the embodiment of the present disclosure may perform the video picture display method provided by any embodiment of the present disclosure, and has a function module and a beneficial effect corresponding to the execution method.
  • FIG. 6 is a schematic structural diagram of a television set according to Embodiment 5 of the present disclosure.
  • the television set includes a processor 201, a memory 202, an input device 203, and an output device 204.
  • the number of processors 201 in the television can be One or more, FIG. 6 takes a processor 201 as an example; the processor 201, the memory 202, the input device 203, and the output device 204 in the television can be connected by a bus or other means, and the bus is connected in FIG. For example.
  • the memory 202 is a computer readable storage medium, and can be used to store a software program, a computer executable program, and a module, such as a program instruction/module corresponding to the video screen display method in the embodiment of the present disclosure (for example, the decoded picture acquisition module 11 The parameter determination module 12, the frame image acquisition module 13, and the playback module 14).
  • the processor 201 executes each of the functional applications and data processing of the device by executing software programs, instructions, and modules stored in the memory 202, i.e., implements the video picture display method described above.
  • the memory 202 may mainly include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal, and the like.
  • memory 202 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • memory 202 can further include memory remotely located relative to processor 201, which can be connected to the device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Input device 203 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the device.
  • Output device 204 can include a display device such as a display screen, such as a display screen of a user terminal.
  • Embodiment 6 of the present disclosure also provides a storage medium including computer executable instructions for executing a video picture display method when executed by a computer processor, the method comprising:
  • the frame images of the display buffer area are cyclically played a preset number of times in the video layer according to the playback order.
  • a storage medium containing computer executable instructions the computer executable instructions are not limited to the method operations as described above, and may also be executed in the video picture display method provided by any embodiment of the present disclosure. Related operations.
  • the present disclosure can be implemented by software and necessary general hardware, and of course can also be implemented by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present disclosure can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a floppy disk or a read-only memory (Read-Only Memory, ROM) of a computer. ), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a variety of instructions to enable a computer device (can be a personal computer, server, or network device, etc.)
  • a computer readable storage medium such as a floppy disk or a read-only memory (Read-Only Memory, ROM) of a computer.
  • RAM random access memory
  • FLASH flash memory
  • hard disk or optical disk etc.
  • each unit and module included in the embodiment of the video picture display device is divided according to functional logic, but is not limited to the above-mentioned division, as long as the corresponding function can be implemented;
  • the names of each functional unit are also for convenience of distinguishing from each other and are not intended to limit the scope of protection of the present disclosure.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

L'invention concerne un procédé d'affichage de trames vidéo comprenant les étapes consistant à : obtenir une image décodée d'une trame vidéo actuelle ; lorsque la résolution de l'image décodée est supérieure à la résolution d'écran d'un écran d'affichage, déterminer un intervalle d'échantillonnage en fonction du rapport de la résolution de l'image décodée à la résolution d'écran de l'écran d'affichage ; obtenir une pluralité de combinaisons de pixels de l'image décodée en fonction de l'intervalle d'échantillonnage et stocker dans une zone tampon d'affichage l'image déterminée par chacune des combinaisons de pixels ; et lire de manière cyclique, dans une couche vidéo, les images dans la zone tampon d'affichage un nombre prédéfini de fois en fonction d'un ordre de lecture. L'invention concerne également un dispositif d'affichage de trames vidéo, une télévision et un support de stockage.
PCT/CN2018/102820 2018-02-12 2018-08-29 Procédé et dispositif d'affichage de trames vidéo, télévision et support de stockage WO2019153723A1 (fr)

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