CN112583821A - Display method, display system, electronic device, and computer-readable storage medium - Google Patents
Display method, display system, electronic device, and computer-readable storage medium Download PDFInfo
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- CN112583821A CN112583821A CN202011449761.7A CN202011449761A CN112583821A CN 112583821 A CN112583821 A CN 112583821A CN 202011449761 A CN202011449761 A CN 202011449761A CN 112583821 A CN112583821 A CN 112583821A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1013—Network architectures, gateways, control or user entities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
- G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2624—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects for obtaining an image which is composed of whole input images, e.g. splitscreen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
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Abstract
The invention relates to the technical field of spliced screen display, in particular to a display method, a display system, electronic equipment and a computer readable storage medium, wherein the method comprises the following steps: processing the first video code stream to obtain a second video code stream; sending the second video code stream to a corresponding node machine for decoding so that the node machine sends the decoded second video code stream to a display splicing screen for displaying; wherein, processing the first video code stream comprises: acquiring windowing instruction information; connecting a signal source according to signal source information, acquiring a first video code stream, and decoding the first video code stream to acquire an original image; zooming the original image according to the first coordinate range; copying the scaled original image to a corresponding window according to the first coordinate range and the signal source information; and cutting and coding the original image in the window according to the single-screen resolution of the display spliced screen to obtain a second video code stream. The invention can reduce the decoding requirement of the node machine.
Description
Technical Field
The present invention relates to the field of tiled screen display technologies, and in particular, to a display method, a display system, an electronic device, and a computer-readable storage medium.
Background
With the development of society, internet information is growing at a high speed, the visual demand of information is also expanding rapidly, the screen display of the existing size can not meet the demand of users, and the display spliced screen is produced at once. The display spliced screen overcomes various defects of the traditional television curtain wall, and provides a best large-screen display system for conveniently, comprehensively and real-timely displaying video information of various systems and providing engineering application such as remote real-time command and scheduling. The display spliced screen is a complete spliced display wall, one screen can be independently used as a display, and a full screen can be used as an oversized screen. According to different use requirements, the changeable large-screen function which can be changed into large and small is realized: the method comprises the following steps of single-screen split display, single-screen independent display, arbitrary combined display, full-screen splicing and vertical-screen display, and optional compensation or covering of image frames. The installation of the display splicing screen is as simple as building blocks, and a plurality of display screens are spliced to obtain a complete finished product for use. The display splicing screen is available, not only adapts to digital signal input, but also supports analog signals. The display spliced screen series products adopt unique and world forefront digital processing technologies, so that users really experience the effect of full-high-definition large screens.
The existing display splicing screen realizes information visualization, and is generally connected with a plurality of node machines through a server, the node machines are connected with corresponding display screens, the display screens are arranged at different positions according to a certain number and layout to form a display whole, and the display whole displays received information. The server decodes, zooms and encodes the information to be displayed through software, then sends the information to the node machine for decoding, and then displays the information through the display splicing screen, thereby displaying complete and ordered images. In the field of video display technologies, in order to improve the processing capability of a display device, a network distributed splicing system is widely used due to its characteristics of easy expansion, convenient networking and flexible matching. The prior art discloses a distributed digital processing system and method, which can effectively process massive digital signals, has better processing capability and can improve the display quality of a multi-channel high-resolution display environment. But it requires, as with other prior art techniques, video decoding from all sources involved in the node machine. If a single screen of a display spliced screen needs to be subjected to multi-window opening and decoding of a video with ultrahigh resolution, the video decoding capability of the node machine needs to be very strong, so that the node machine can only use a high-performance and expensive chip, and the equipment cost is increased. Therefore, there is a need for a display method, a display system, an electronic device and a computer readable storage medium that can reduce the decoding requirement of a node computer.
Disclosure of Invention
In order to solve the above problems, the present invention provides a display method, a display system, an electronic device, and a computer-readable storage medium, which can reduce the node computer decoding requirement.
The technical scheme adopted by the invention is as follows:
a distributed display method, comprising:
processing the first video code stream to obtain a second video code stream;
sending the second video code stream to a corresponding node machine for decoding so that the node machine sends the decoded second video code stream to a display splicing screen for displaying;
wherein, processing the first video code stream comprises:
acquiring windowing instruction information; the windowing instruction information is operation instruction information for opening a window in the virtual canvas; the window is an area to be displayed with a video; the virtual canvas is a canvas which is established by the server according to the resolution of the display splicing screen; the operation instruction information includes: signal source information and a first coordinate range; the signal source information includes: virtual canvas resolution, signal source IP address and signal source IP protocol; the first coordinate range is a coordinate range of the window relative to the virtual canvas;
connecting a signal source according to signal source information, acquiring a first video code stream, and decoding the first video code stream to acquire an original image;
zooming the original image according to the first coordinate range;
copying the scaled original image to a corresponding window according to the first coordinate range and the signal source information;
and cutting and coding the original image in the window according to the single-screen resolution of the display spliced screen to obtain a second video code stream.
Specifically, the prior art generally implements tiled screen display: the server is connected with the signal source, then the original video code stream acquired by the signal source is sent to the node machine, the node machine decodes the original video code stream, then the decoded original video code stream is subjected to scaling and cutting according to the corresponding display area, and finally the decoded original video code stream is sent to the display splicing screen for display. If a plurality of windows need to be opened for displaying a single screen of a spliced screen to play a plurality of different video contents, a node machine corresponding to the single screen needs to simultaneously decompress a plurality of video code streams, which requires that the video decoding capability of the node machine is very strong, and if the video resolution is ultrahigh resolution, the video decoding capability requirement of the node machine is further improved, and the node machine needs to use a high-performance and expensive chip, resulting in increased equipment cost. In the same time, the same video segment needs to be played across multiple display splicing screens in a single-screen mode, a node machine corresponding to each display splicing screen in the single-screen mode needs to decompress a video stream across the screens independently for one time, and the same video code stream needs to be decompressed by different node machines for multiple times, so that resource waste is caused. The method is specifically realized by a server, the server acquires windowing instruction information, the windowing instruction information is in wired/wireless connection with an information source, a first video code stream is acquired from the information source, the server replaces node machines to decode the original video code stream, the related area of each node machine is calculated according to the coordinate range of each node machine in a display splicing screen, corresponding images are selected to be overlapped, finally the images are encoded according to the coordinate range of the display splicing screen, the encoded data are sent to the node machines to be decoded, and then the encoded data are sent to the display splicing screen to be displayed. On one hand, the node machine only needs to decode one video code stream sent by the server no matter how many videos to be played simultaneously by the single display spliced screen corresponding to the node machine; on the other hand, no matter how high the resolution of the original video code stream is, the node machine only needs to decode the video code stream with the specific resolution coded by the server, so that the node machine can be competent for decoding without strong decoding capability, can use a chip with lower performance and low price, and reduces the equipment cost. In addition, no matter how many display splicing screens need to be spanned to play in a single screen in the same video segment, the server replaces the node machine to decode the original video code stream, the same video code stream only needs to be decoded once, repeated decoding is not needed as in the prior art (each node machine), and the consumption of overall resources is saved.
Further, after scaling the original image according to the first coordinate range, before copying the scaled original image to a corresponding window according to the first coordinate range and the signal source information, the processing the first video code stream further includes:
calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information;
the third coordinate range is a coordinate range of the overlapping part of each display area and the window relative to the display area;
the fourth coordinate range is a coordinate range of the overlapped part of each display area and the window relative to the original image;
the virtual canvas consists of at least two display areas; and the resolution ratio of the display area is the single-screen resolution ratio of the corresponding display spliced screen.
Further, after the scaling processing is performed on the original image according to the first coordinate range, and before the third coordinate range and the fourth coordinate range are calculated according to the first coordinate range and the signal source information, the processing, by the server, of the first video code stream further includes:
calculating a second coordinate range according to the first coordinate range and the signal source information;
the second coordinate range is a coordinate range of the overlapping portion of each display area and the window relative to the virtual canvas.
Specifically, before clipping and encoding an original image in a window, firstly, the resolution for scaling the original image and the area coordinates of a video to be displayed need to be determined according to the coordinate range of the window relative to a virtual canvas, after the original image is scaled, the display area corresponding to a node machine needs to be calculated according to the coordinate range of the overlapping part of each display area and the window relative to the virtual canvas, the coordinate range of the overlapping part of each display area and the window relative to the display area, and the coordinate range of the overlapping part of each display area and the window relative to the original image, corresponding parts are selected from the original image for superposition processing, the image is encoded according to the coordinate range of the display area, and the specific process is performed on a server.
Further, the original image is an image in RGB or YUV format.
Further, the display areas have different/same resolution between them.
Specifically, the resolution ratio of each single display spliced screen is set according to the requirement (namely the resolution ratio of the display area corresponding to the single display spliced screen is adjustable), the resolution ratio of each screen can be set to be different resolution ratios, and can also be set to be the same resolution ratio, so that the display spliced screen is flexible and convenient.
A distributed display system comprising: a control unit, a processing unit and a transmitting unit;
the control unit is used for acquiring windowing instruction information; the windowing instruction information is operation instruction information for opening a window in the virtual canvas; the window is an area to be displayed with a video; the virtual canvas is a canvas which is established by the server according to the resolution of the display splicing screen; the operation instruction information includes: signal source information and a first coordinate range; the signal source information includes: virtual canvas resolution, signal source IP address and signal source IP protocol; the first coordinate range is a coordinate range of the window relative to the virtual canvas;
the processing unit is used for connecting a signal source according to the signal source information, acquiring a first video code stream, decoding the first video code stream and acquiring an original image; the processing unit is further used for zooming the original image according to the first coordinate range, copying the zoomed original image to a corresponding window according to the first coordinate range and the signal source information, and cutting and encoding the original image in the window according to the single-screen resolution of the display spliced screen to obtain a second video code stream;
and the sending unit is used for sending the second video code stream to the corresponding node machine for decoding so that the node machine sends the decoded second video code stream to the display splicing screen for displaying.
Further, still include: a positioning unit; the positioning unit is used for calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information after the processing unit zooms the original image according to the first coordinate range and before the processing unit copies the zoomed original image to the corresponding window according to the first coordinate range and the signal source information; the third coordinate range is a coordinate range of the overlapping part of each display area and the window relative to the display area; the fourth coordinate range is a coordinate range of the overlapped part of each display area and the window relative to the original image; the virtual canvas consists of at least two display areas; and the resolution ratio of the display area is the single-screen resolution ratio of the corresponding display spliced screen.
Further, the positioning unit includes: a first positioning unit and a second positioning unit; the first positioning unit is used for calculating a second coordinate range according to the first coordinate range and the signal source information; the second coordinate range is a coordinate range of the overlapping part of each display area and each window relative to the virtual canvas; and the second positioning unit is used for calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information.
An electronic device, the electronic device comprising:
a memory storing at least one instruction;
a processor executing instructions stored in the memory to implement a distributed display method as in any one of the above.
A computer readable storage medium having stored thereon a processing program executable by one or more processors to implement a distributed display method as in any one of the above.
Compared with the prior art, the invention has the beneficial effects that:
(1) the node computer can be qualified for decoding without strong decoding capability, so that the node can use a chip with lower performance and low price, and the equipment cost is reduced.
(2) The server replaces the node machine to decode the original video code stream, the same video code stream only needs to be decoded once, repeated decoding is not needed (by each node machine), and the consumption of overall resources is saved.
(3) The resolution ratio of each single display spliced screen is set according to requirements, the resolution ratio of each screen can be set to be different resolution ratios, the same resolution ratio can also be set, and the display spliced screen is flexible and convenient.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of a virtual canvas according to the present invention;
fig. 3 is a schematic diagram of the system structure of the present invention.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Examples
The present embodiment provides a distributed display method, and fig. 1 is a flowchart of the present invention, as shown in the figure, including:
processing the first video code stream to obtain a second video code stream;
sending the second video code stream to a corresponding node machine for decoding so that the node machine sends the decoded second video code stream to a display splicing screen for displaying;
wherein, processing the first video code stream comprises:
acquiring windowing instruction information; the windowing instruction information is operation instruction information for opening a window in the virtual canvas; the window is an area to be displayed with a video; the virtual canvas is a canvas which is established by the server according to the resolution of the display splicing screen; the operation instruction information includes: signal source information and a first coordinate range; the signal source information includes: virtual canvas resolution, signal source IP address and signal source IP protocol; the first coordinate range is a coordinate range of the window relative to the virtual canvas;
FIG. 2 is a schematic view of the virtual canvas of the present invention, as shown, the virtual canvas has 4 rows and 4 columns, and if each grid has a size of 1920x1080, three windows are opened on the virtual canvas, which are respectively a window A, a window B and a window C, and the coordinates of the window A are [0, 2880,1620 ].
Connecting a signal source according to signal source information, acquiring a first video code stream, and decoding the first video code stream to acquire an original image;
zooming the original image according to the first coordinate range;
taking window a as an example, if the area to be displayed is window a, the coordinates of window a are [0, 2880,1620], and the resolution of the original image is 1920x1080, the original image needs to be scaled to 2880x 1620.
Copying the scaled original image to a corresponding window according to the first coordinate range and the signal source information;
the server needs to establish a virtual canvas according to the resolution of the display spliced screen, and if the size of the full screen of the display spliced screen is 7680x4320, the virtual canvas with the resolution of 7680x4320 in fig. 2 is established; the canvas is a memory that specifies only one color space. And copying the scaled original image to a window A of the virtual canvas according to the window coordinate range information.
And cutting and coding the original image in the window according to the single-screen resolution of the display spliced screen to obtain a second video code stream.
The server intercepts and encodes the original images in the area [0, 1920,1080] of the virtual canvas, and the original images are used as video code streams of nodes in a first row and a first column, intercepts and encodes the original images in the area [1920,0,1920,1080] of the virtual canvas, and the original images are used as video code streams of nodes in a first row and a second column, and the like, and encodes the original images in all rows and columns in the virtual canvas into a second video code stream.
Specifically, the prior art generally implements tiled screen display: the server is connected with the signal source, then the original video code stream acquired by the signal source is sent to the node machine, the node machine decodes the original video code stream, then the decoded original video code stream is subjected to scaling and cutting according to the corresponding display area, and finally the decoded original video code stream is sent to the display splicing screen for display. If a plurality of windows need to be opened for displaying a single screen of a spliced screen to play a plurality of different video contents, a node machine corresponding to the single screen needs to simultaneously decompress a plurality of video code streams, which requires that the video decoding capability of the node machine is very strong, and if the video resolution is ultrahigh resolution, the video decoding capability requirement of the node machine is further improved, and the node machine needs to use a high-performance and expensive chip, resulting in increased equipment cost. In the same time, the same video segment needs to be played across multiple display splicing screens in a single-screen mode, a node machine corresponding to each display splicing screen in the single-screen mode needs to decompress a video stream across the screens independently for one time, and the same video code stream needs to be decompressed by different node machines for multiple times, so that resource waste is caused. The method is specifically realized by a server, the server acquires windowing instruction information, the windowing instruction information is in wired/wireless connection with an information source, a first video code stream is acquired from the information source, the server replaces node machines to decode the original video code stream, the related area of each node machine is calculated according to the coordinate range of each node machine in a display splicing screen, corresponding images are selected to be overlapped, finally the images are encoded according to the coordinate range of the display splicing screen, the encoded data are sent to the node machines to be decoded, and then the encoded data are sent to the display splicing screen to be displayed. On one hand, the node machine only needs to decode one video code stream sent by the server no matter how many videos to be played simultaneously by the single display spliced screen corresponding to the node machine; on the other hand, no matter how high the resolution of the original video code stream is, the node machine only needs to decode the video code stream with the specific resolution coded by the server, so that the node machine can be competent for decoding without strong decoding capability, can use a chip with lower performance and low price, and reduces the equipment cost. In addition, no matter how many display splicing screens need to be spanned to play in a single screen in the same video segment, the server replaces the node machine to decode the original video code stream, the same video code stream only needs to be decoded once, repeated decoding is not needed as in the prior art (each node machine), and the consumption of overall resources is saved.
Further, after scaling the original image according to the first coordinate range, before copying the scaled original image to a corresponding window according to the first coordinate range and the signal source information, the processing the first video code stream further includes:
calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information;
the third coordinate range is a coordinate range of the overlapping part of each display area and the window relative to the display area;
the fourth coordinate range is a coordinate range of the overlapped part of each display area and the window relative to the original image;
the virtual canvas consists of at least two display areas; and the resolution ratio of the display area is the single-screen resolution ratio of the corresponding display spliced screen.
Further, after the scaling processing is performed on the original image according to the first coordinate range, and before the third coordinate range and the fourth coordinate range are calculated according to the first coordinate range and the signal source information, the processing, by the server, of the first video code stream further includes:
calculating a second coordinate range according to the first coordinate range and the signal source information;
the second coordinate range is a coordinate range of the overlapping portion of each display area and the window relative to the virtual canvas.
Specifically, before clipping and encoding an original image in a window, firstly, the resolution for scaling the original image and the area coordinates of a video to be displayed need to be determined according to the coordinate range of the window relative to a virtual canvas, after the original image is scaled, the display area corresponding to a node machine needs to be calculated according to the coordinate range of the overlapping part of each display area and the window relative to the virtual canvas, the coordinate range of the overlapping part of each display area and the window relative to the display area, and the coordinate range of the overlapping part of each display area and the window relative to the original image, corresponding parts are selected from the original image for superposition processing, the image is encoded according to the coordinate range of the display area, and the specific process is performed on a server.
Further, the original image is an image in RGB or YUV format.
Further, the display areas have different/same resolution between them.
Specifically, the resolution ratio of each single display spliced screen is set according to the requirement (namely the resolution ratio of the display area corresponding to the single display spliced screen is adjustable), the resolution ratio of each screen can be set to be different resolution ratios, and can also be set to be the same resolution ratio, so that the display spliced screen is flexible and convenient.
Fig. 3 is a schematic structural diagram of a distributed display system according to the present invention, and as shown in the figure, the system includes: a control unit, a processing unit and a transmitting unit;
the control unit is used for acquiring windowing instruction information; the windowing instruction information is operation instruction information for opening a window in the virtual canvas; the window is an area to be displayed with a video; the virtual canvas is a canvas which is established by the server according to the resolution of the display splicing screen; the operation instruction information includes: signal source information and a first coordinate range; the signal source information includes: virtual canvas resolution, signal source IP address and signal source IP protocol; the first coordinate range is a coordinate range of the window relative to the virtual canvas;
the processing unit is used for connecting a signal source according to the signal source information, acquiring a first video code stream, decoding the first video code stream and acquiring an original image; the processing unit is further used for zooming the original image according to the first coordinate range, copying the zoomed original image to a corresponding window according to the first coordinate range and the signal source information, and cutting and encoding the original image in the window according to the single-screen resolution of the display spliced screen to obtain a second video code stream;
and the sending unit is used for sending the second video code stream to the corresponding node machine for decoding so that the node machine sends the decoded second video code stream to the display splicing screen for displaying.
Further, still include: a positioning unit; the positioning unit is used for calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information after the processing unit zooms the original image according to the first coordinate range and before the processing unit copies the zoomed original image to the corresponding window according to the first coordinate range and the signal source information; the third coordinate range is a coordinate range of the overlapping part of each display area and the window relative to the display area; the fourth coordinate range is a coordinate range of the overlapped part of each display area and the window relative to the original image; the virtual canvas consists of at least two display areas; and the resolution ratio of the display area is the single-screen resolution ratio of the corresponding display spliced screen.
Further, the positioning unit includes: a first positioning unit and a second positioning unit; the first positioning unit is used for calculating a second coordinate range according to the first coordinate range and the signal source information; the second coordinate range is a coordinate range of the overlapping part of each display area and each window relative to the virtual canvas; and the second positioning unit is used for calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information.
An electronic device, the electronic device comprising:
a memory storing at least one instruction;
a processor executing instructions stored in the memory to implement a distributed display method as in any one of the above.
A computer readable storage medium having stored thereon a processing program executable by one or more processors to implement a distributed display method as in any one of the above.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (10)
1. A distributed display method, comprising:
processing the first video code stream to obtain a second video code stream;
sending the second video code stream to a corresponding node machine for decoding so that the node machine sends the decoded second video code stream to a display splicing screen for displaying;
wherein, processing the first video code stream comprises:
acquiring windowing instruction information; the windowing instruction information is operation instruction information for opening a window in the virtual canvas; the window is an area to be displayed with a video; the virtual canvas is a canvas which is established by the server according to the resolution of the display splicing screen; the operation instruction information includes: signal source information and a first coordinate range; the signal source information includes: virtual canvas resolution, signal source IP address and signal source IP protocol; the first coordinate range is a coordinate range of the window relative to the virtual canvas;
connecting a signal source according to signal source information, acquiring a first video code stream, and decoding the first video code stream to acquire an original image;
zooming the original image according to the first coordinate range;
copying the scaled original image to a corresponding window according to the first coordinate range and the signal source information;
and cutting and coding the original image in the window according to the single-screen resolution of the display spliced screen to obtain a second video code stream.
2. The distributed display method according to claim 1, wherein after scaling the original image according to the first coordinate range, before copying the scaled original image to a corresponding window according to the first coordinate range and the signal source information, the processing the first video stream further comprises:
calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information;
the third coordinate range is a coordinate range of the overlapping part of each display area and the window relative to the display area;
the fourth coordinate range is a coordinate range of the overlapped part of each display area and the window relative to the original image;
the virtual canvas consists of at least two display areas; and the resolution ratio of the display area is the single-screen resolution ratio of the corresponding display spliced screen.
3. The distributed display method according to claim 2, wherein after scaling the original image according to the first coordinate range, before calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information, the processing the first video stream further comprises:
calculating a second coordinate range according to the first coordinate range and the signal source information;
the second coordinate range is a coordinate range of the overlapping portion of each display area and the window relative to the virtual canvas.
4. A distributed display method according to any one of claims 1 to 3, wherein the original image is an image in RGB or YUV format.
5. A distributed display method according to any one of claims 1 to 3, wherein each display region has a different/same resolution.
6. A distributed display system, comprising: a control unit, a processing unit and a transmitting unit;
the control unit is used for acquiring windowing instruction information; the windowing instruction information is operation instruction information for opening a window in the virtual canvas; the window is an area to be displayed with a video; the virtual canvas is a canvas which is established by the server according to the resolution of the display splicing screen; the operation instruction information includes: signal source information and a first coordinate range; the signal source information includes: virtual canvas resolution, signal source IP address and signal source IP protocol; the first coordinate range is a coordinate range of the window relative to the virtual canvas;
the processing unit is used for connecting a signal source according to the signal source information, acquiring a first video code stream, decoding the first video code stream and acquiring an original image; the processing unit is further used for zooming the original image according to the first coordinate range, copying the zoomed original image to a corresponding window according to the first coordinate range and the signal source information, and cutting and encoding the original image in the window according to the single-screen resolution of the display spliced screen to obtain a second video code stream;
and the sending unit is used for sending the second video code stream to the corresponding node machine for decoding so that the node machine sends the decoded second video code stream to the display splicing screen for displaying.
7. The distributed display system of claim 6, further comprising: a positioning unit; the positioning unit is used for calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information after the processing unit zooms the original image according to the first coordinate range and before the processing unit copies the zoomed original image to the corresponding window according to the first coordinate range and the signal source information; the third coordinate range is a coordinate range of the overlapping part of each display area and the window relative to the display area; the fourth coordinate range is a coordinate range of the overlapped part of each display area and the window relative to the original image; the virtual canvas consists of at least two display areas; and the resolution ratio of the display area is the single-screen resolution ratio of the corresponding display spliced screen.
8. The distributed display system of claim 7, wherein the positioning unit comprises: a first positioning unit and a second positioning unit; the first positioning unit is used for calculating a second coordinate range according to the first coordinate range and the signal source information; the second coordinate range is a coordinate range of the overlapping part of each display area and each window relative to the virtual canvas; and the second positioning unit is used for calculating a third coordinate range and a fourth coordinate range according to the first coordinate range and the signal source information.
9. An electronic device, characterized in that the electronic device comprises:
a memory storing at least one instruction;
a processor executing instructions stored in the memory to implement the distributed display method of any of claims 1-3.
10. A computer-readable storage medium having stored thereon a processing program executable by one or more processors to implement the distributed display method of any one of claims 1-3.
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