CN114945100A - Remote transmission method of high-resolution video image and background server - Google Patents
Remote transmission method of high-resolution video image and background server Download PDFInfo
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- CN114945100A CN114945100A CN202210524414.9A CN202210524414A CN114945100A CN 114945100 A CN114945100 A CN 114945100A CN 202210524414 A CN202210524414 A CN 202210524414A CN 114945100 A CN114945100 A CN 114945100A
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234363—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the spatial resolution, e.g. for clients with a lower screen resolution
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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
- H04N21/4402—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
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Abstract
The invention discloses a remote transmission method of a high-resolution video image and a background server, wherein the method comprises the following steps: s1: generating a plurality of second resolution signals which are complemented with each other through a first resolution signal generator, and sending the second resolution signals to a coding node for coding; s2: driving the image display control system to associate the second resolution signals according to a preset image combination sequence and storing the second resolution signals into a signal list; s3: and forming a virtual window with the coordinates and width for mapping out the real window by using the second resolution signal to form a virtual first resolution signal through the image display control system so as to obtain the windowing position of the second resolution signal on the LED spliced display screen. According to the invention, the high-resolution first resolution signal is transmitted to the LED spliced display screen in the form of the low-resolution second resolution signal, so that the high-resolution video image is transmitted remotely by the low-resolution transmission equipment, and the transmission cost of the high-resolution video image is reduced.
Description
Technical Field
The invention relates to the technical field of video image data processing, in particular to a remote transmission method of a high-resolution video image and a background server.
Background
With the development of ultra-high definition display technology, the resolution of display systems is higher and higher, and high definition display systems with 8K and 10K resolutions, for example, have appeared. Due to the large amount of data contained in the high-resolution image, the requirements for playing, transmitting, processing and displaying the high-resolution image are high, especially for the transmission device, for example, in an 8K playing system, the bandwidth of the image data must reach 59.8Gbps, and 448GB of storage space is required for storing 1 minute of image content, which results in high price of the related device or system.
Many users who seek high resolution also have high-definition display systems installed at homes or some specific places, but video images displayed by the high-definition display systems are often unsatisfactory; in order to overcome the problem of the transmission device, some users select the devices to be played, transmitted, processed and displayed to be set in the same area (for example, the same machine room and the like), and then the method is obviously not applicable to ordinary families and concerts or exhibitions with limited device layout space, so that most users with high-definition display systems use 8K or 10K-resolution screens to watch 2K or 4K video images, and great use troubles are brought to the users.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, an object of the present invention is to provide a method for long-distance transmission of high-resolution video images, which can solve the problem that high-resolution signals cannot be effectively transmitted over long distances.
The second objective of the present invention is to provide a remote transmission background server for high-resolution video images, which can solve the problem that high-resolution signals cannot be effectively transmitted over a long distance.
In order to achieve one of the above purposes, the technical scheme adopted by the invention is as follows:
a method for the remote transmission of high resolution video images comprising the steps of:
s1: generating a plurality of second resolution signals which are complemented with each other through a first resolution signal generator, and sending the second resolution signals to an encoding node for encoding, wherein the first resolution is greater than the second resolution;
s2: driving the image display control system to associate the second resolution signals according to a preset image combination sequence and storing the second resolution signals into a signal list;
s3: and forming a virtual first resolution signal by the second resolution signal through the image display control system to form a virtual window for mapping the coordinates and width of the real window so as to obtain the windowing position of the second resolution signal on the LED spliced display screen.
Preferably, the step S1 is specifically implemented by the following steps:
s11: generating 2(n/m) mutually complementary second resolution signals by a first resolution signal generator, where n is the first resolution and m is the second resolution;
s12: respectively sending 2(n/m) second resolution signals which are complemented with each other to 2(n/m) coding nodes for carrying out H264/H265 format coding, and endowing frame numbers according to a preset sequence;
s13: and driving the encoding node to transmit the encoded second resolution signal to the decoding node.
Preferably, the step S2 is specifically implemented by the following steps:
s21: carrying out H264/H265 format decoding and caching on the second resolution signal sent by the coding node through a decoding node, and sending the second resolution signal to an image display control system;
s22: and driving the image display control system to sequence the second resolution signals according to the frame numbers, and storing the virtual names of the second resolution signals into a signal list.
Preferably, the step S3 is specifically implemented by the following steps:
and driving the image display control system to form a virtual first resolution signal by 2(n/m) second resolution signals according to the sequence of the signal list, forming a virtual window on a system interface, and mapping the coordinates and width and height of the real window to obtain the window position of each second resolution signal on the LED spliced display screen.
Preferably, the method further comprises the following step after S3:
s4: and driving the image display control system to periodically send pulse synchronization signals to the coding node and the window corresponding to each second resolution signal.
Preferably, the step S4 is specifically implemented by the following steps:
s41: driving an image display control system to periodically send a pulse synchronization signal with a frame number as a key index to a coding node;
s42: and driving the image display control system to periodically send a pulse synchronization signal taking the frame number as a key index to a window corresponding to each second resolution signal.
Preferably, the second resolution signal is one of a 2K signal and a 4K signal.
Preferably, the first resolution signal is an 8K signal.
In order to achieve the second purpose, the technical scheme adopted by the invention is as follows:
a long-distance transmission background server of high-resolution video images comprises a storage and a processor;
a memory for storing program instructions;
and the processor is used for executing the program instructions to execute the remote transmission method of the high-resolution video image.
Compared with the prior art, the invention has the beneficial effects that: generating a plurality of second resolution signals which are complemented with each other through a first resolution signal generator, sending the second resolution signals to a coding node for coding, transmitting the first resolution signals with high resolution to an image display control system in a long distance in the form of the second resolution signals with low resolution, driving the image display control system to associate the second resolution signals according to a preset image combination sequence, and storing the second resolution signals into a signal list; the second resolution signals are combined into virtual first resolution signals through an image display control system to form a virtual window used for mapping out coordinates and width of a real window, so that the windowing position of the second resolution signals on the LED spliced display screen is obtained, the LED spliced display screen can play high-resolution video images, the video images of 8K signals are remotely transmitted through 2K or 4K signals, namely the 8K signals are transmitted, encoded and decoded through 2K or 4K equipment, the transmission cost of the high-resolution video images is reduced, and a new thought is provided for the construction of next-generation broadcast network.
Drawings
Fig. 1 is a flow chart of a method for remote transmission of high resolution video images according to the present invention.
Fig. 2 is a schematic diagram of an actual application of the method for transmitting a high-resolution video image over a long distance according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The invention is further described with reference to the following drawings and detailed description:
in the present invention, the second resolution signal is one of a 2K signal and a 4K signal. The first resolution signal is an 8K signal or a 10K signal. The image display control system at least comprises a configuration interface and a control algorithm, and the LED splicing display screen at least meets the requirement of normal playing of video images corresponding to 8K signals.
The first embodiment is as follows:
as shown in fig. 1-2, a method for long distance transmission of high resolution video images comprises the steps of:
s1: generating a plurality of second resolution signals which are complemented with each other through a first resolution signal generator, and sending the second resolution signals to an encoding node for encoding, wherein the first resolution is greater than the second resolution;
specifically, the first resolution signal generator can generate any one of the first resolution signal and the second resolution signal, in this embodiment, the first resolution signal generator generates a plurality of second resolution signals that can complement each other to the first resolution signal, so as to enable the low-resolution transmission device to transmit the high-resolution video image over a long distance, and preferably, the S1 is specifically implemented by the following steps:
s11: generation 2 by a first resolution signal generator (n/m) A plurality of complementary second resolution signals, wherein n is the first resolution and m is the second resolution;
in this embodiment, the first resolution signal is preferably an 8K signal, the second resolution signal is preferably a 4K signal, specifically, the 8K signal generator (e.g. 8K signal computer) generates 4 complementary 4K signals, i.e. 1 video frame of 8K is composed of 4 complementary 4K video frames, and similarly, when the second resolution signal is preferably a 2K signal, the 8K signal generator (e.g. 8K signal computer) generates 16 complementary 2K signals.
S12: transmitting 2(n/m) mutually complementary second resolution signals to 2 (n/m) A coding nodeEncoding the line H264/H265 format, and giving a frame number according to a preset sequence;
specifically, 4 paths of 4K signals generated by the 8K signal generator are simultaneously and respectively input into 4K coding boxes (coding nodes) for coding in H264/H265 format, in this embodiment, 4 paths of complementary 4K signals can be respectively recorded as A, B, C, D, since A, B, C and D can form the 1 st 8K video frame, the frame numbers 1 given to A, B, C and D are both assigned, and similarly, E, F, G, H can form the 2 nd 8K video frame, the frame numbers 2 given to E, F, G and H are both assigned, and so on.
S13: and driving the encoding node to transmit the encoded second resolution signal to the decoding node.
Specifically, the encoding node transmits the encoded 4 channels of 4K signals to the decoding node through a network cable and other devices, so that the low-resolution transmission device can transmit the high-resolution video image in a long distance.
S2: driving the image display control system to associate the second resolution signals according to a preset image combination sequence and storing the second resolution signals into a signal list;
specifically, the image display control system performs combination sequential association on the second resolution signal, so that 4 complementary 4K video frames can display an 8K video image on the LED tiled display screen, in this embodiment, the S2 is specifically implemented by the following steps:
s21: carrying out H264/H265 format decoding and caching on the second resolution signal sent by the coding node through a decoding node, and sending the second resolution signal to an image display control system;
specifically, 4K coding boxes (coding nodes) respectively transmit 4 paths of mutually complemented 4K signals to 4K decoding boxes (decoding nodes) through a long distance through a network cable, the 4K decoding boxes (decoding nodes) respectively perform H264/H265 format decoding on the received 4K signals, and cache the 4K signals according to the actual network environment, synchronous playing is realized, the condition that an LED splicing display screen cannot normally display 8K video images due to network fluctuation is avoided, and the decoded 4K signals are sent to an image display control system.
S22: and driving the image display control system to sequence the second resolution signals according to the frame numbers, and storing the virtual names of the second resolution signals into a signal list.
Specifically, after the image display control system receives the 4K signal, the virtual name of the 4 channels of 4K signals is displayed, the received 4K signals are arranged according to the frame number, the virtual name of the 4K signal is stored in the signal list, and the 4K signals with the same frame number are associated to form 1 channel of 8K virtual signals according to the original combination sequence of the image.
S3: and forming a virtual first resolution signal by the second resolution signal through the image display control system to form a virtual window for mapping the coordinates and width of the real window so as to obtain the windowing position of the second resolution signal on the LED spliced display screen.
Specifically, the image display control system combines 4K signals with the same frame number in 4 paths into 1 path of 8K virtual signals according to the original combination sequence of the images, and obtains the actual windowing position on the LED tiled display screen through the virtual window of the system interface, and preferably, the image display control system is an 8K image display control system; in this embodiment, the step S3 is specifically implemented by the following steps:
and driving the image display control system to form a virtual first resolution signal by using the 2(n/m) second resolution signals according to the sequence of the signal list, forming a virtual window on a system interface, and mapping the coordinate and the width and the height of the real window to obtain the window position of each second resolution signal on the LED spliced display screen.
In this embodiment, the image display control system combines 4 channels of 4K signals with the same frame number into 8K virtual signals, then drags the 8K virtual signals to open the LED tiled screen on the window, and forms a virtual window on the system interface, and maps the coordinates and width and height of the real window according to the combination sequence of the 4 channels of 4K signals and the coordinates and width and height of the opened virtual window, so as to obtain the corresponding windowing positions of the original 4 channels of 4K signals, and open the real 4 windows on the LED tiled screen. Similarly, after the image display control system drags the virtual window, the corresponding windowing positions of the 4 paths of 4K signals are recalculated, so that the window on the LED spliced display screen is dragged, and after the image display control system closes the virtual window, the real 4 windows are synchronously closed in a circulating manner.
Further, in order to ensure that 4K signals with the same frame number of 4 frames can be combined into a valid 8K video image on the LED tiled display screen, the following steps are further included after S3:
s4: and driving the image display control system to periodically send pulse synchronization signals to the coding node and the window corresponding to each second resolution signal.
Specifically, the image display control system periodically sends a pulse synchronization signal to drive the coding node and a window corresponding to each path of 4K signal to achieve synchronization. In this embodiment, the step S4 is specifically implemented by the following steps:
s41: driving an image display control system to periodically send a pulse synchronization signal with a frame number as a key index to a coding node;
specifically, the image display control system periodically sends a pulse synchronization signal with the frame number as a key index to the coding node, so that the signal source synchronously sends the second resolution signals with the same frame number, and the resource amount required to be consumed when the image display control system sequences the 4 paths of second resolution signals is reduced.
S42: and driving the image display control system to periodically send a pulse synchronization signal taking the frame number as a key index to the window corresponding to each second resolution signal.
Specifically, the image display control system periodically sends the pulse synchronization signal with the frame number as the key index to the window corresponding to each second resolution signal, so that each individual window can synchronously play the second resolution signal with the same frame number, and the image combination processing of the video image of each individual window is not required in advance.
The second embodiment:
a long-distance transmission background server of high-resolution video images comprises a storage and a processor;
a memory for storing program instructions;
and the processor is used for executing the program instructions to execute the remote transmission method of the high-resolution video image in the first embodiment.
Various other modifications and changes may occur to those skilled in the art based on the foregoing teachings and concepts, and all such modifications and changes are intended to be included within the scope of the appended claims.
Claims (9)
1. A method for the remote transmission of high resolution video images, comprising the steps of:
s1: generating a plurality of second resolution signals which are complemented with each other through a first resolution signal generator, and sending the second resolution signals to an encoding node for encoding, wherein the first resolution is greater than the second resolution;
s2: driving the image display control system to associate the second resolution signals according to a preset image combination sequence and storing the second resolution signals into a signal list;
s3: and forming a virtual first resolution signal by the second resolution signal through the image display control system to form a virtual window for mapping the coordinates and width of the real window so as to obtain the windowing position of the second resolution signal on the LED spliced display screen.
2. The method for transmitting a high-resolution video image over a long distance according to claim 1, wherein said S1 is specifically implemented by the steps of:
s11: generation 2 by a first resolution signal generator (n/m) A plurality of complementary second resolution signals, wherein n is the first resolution and m is the second resolution;
s12: will 2 (n/m) The mutually complemented second resolution signals are respectively transmitted to 2 (n/m) Carrying out H264/H265 format coding on each coding node, and endowing frame numbers according to a preset sequence;
s13: and driving the encoding node to transmit the encoded second resolution signal to the decoding node.
3. The method for transmitting a high-resolution video image over a long distance according to claim 2, wherein said S2 is specifically implemented by the steps of:
s21: carrying out H264/H265 format decoding and caching on the second resolution signal sent by the coding node through a decoding node, and sending the second resolution signal to an image display control system;
s22: and driving the image display control system to sequence the second resolution signals according to the frame numbers, and storing the virtual names of the second resolution signals into a signal list.
4. A method for long-distance transmission of high-resolution video images according to claim 3, wherein said S3 is implemented by the following steps:
driving the image display control system to sort 2 according to the signal list (n/m) The second resolution signals form virtual first resolution signals, a virtual window is formed on a system interface, and the coordinates and the width and the height of the real window are mapped to obtain the window position of each second resolution signal on the LED spliced display screen.
5. The method for transmitting high resolution video images over long distances according to claim 4, wherein said step of S3 is followed by the steps of:
s4: and driving the image display control system to periodically send pulse synchronization signals to the coding node and the window corresponding to each second resolution signal.
6. The method for transmitting a high-resolution video image over a long distance according to claim 5, wherein said step S4 is implemented by the steps of:
s41: driving an image display control system to periodically send a pulse synchronization signal with a frame number as a key index to a coding node;
s42: and driving the image display control system to periodically send a pulse synchronization signal taking the frame number as a key index to a window corresponding to each second resolution signal.
7. A method for the remote transmission of high resolution video images as claimed in claim 1, characterized in that: the second resolution signal is one of a 2K signal and a 4K signal.
8. A method for long distance transmission of high resolution video images as claimed in claim 7, characterized in that: the first resolution signal is an 8K signal.
9. A remote transmission background server for high resolution video images, comprising: comprises a storage and a processor;
a memory for storing program instructions;
a processor for executing said program instructions to perform the method of remote transmission of high resolution video images according to any of claims 1 to 8.
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