CN113596470A - Ultra-high-definition video wireless transmitting and receiving method and device applying compression algorithm - Google Patents
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Abstract
The application discloses a method and a device for wirelessly transmitting and receiving ultra-high definition video by applying a compression algorithm, wherein the method for transmitting the ultra-high definition video comprises the following steps: the method comprises the steps that the sending equipment obtains the ultra-high-definition video from video source equipment based on an input interface; the ultra-high definition video comprises: computer graphics generated by a computer, or images taken by a camera; the method comprises the steps that a sending device encodes an ultra-high-definition video through a medium-pressure compression encoding algorithm to obtain code stream data; the sending equipment encapsulates the code stream data based on a communication protocol to obtain a data packet; the sending equipment sends the data packet to a first 5G communication module of which the transmission rate is not lower than a first threshold value; the first 5G communication module is used for transmitting the data packet. By adopting the method and the device, the transmitting device performs video lossless compression on the ultrahigh-definition video by adopting a medium-voltage compression algorithm, and then transmits the ultrahigh-definition video to the receiving device through the 5G wireless network, so that the ultrahigh-definition video can be displayed in real time with ultralow time delay and lossless image quality by the display device coupled with the receiving device.
Description
Technical Field
The application relates to the technical field of image processing, in particular to a method and equipment for wirelessly transmitting and receiving ultra-high-definition video by applying a medium-definition compression algorithm.
Background
A large amount of redundant data exists in each frame of image data in the ultra-high definition video, so that an image data compression technology is developed, and algorithms with good compression effects in a transmission image compression algorithm are as follows: the h.264 compression algorithm can compress an image to a very small size, but has a high delay, and is not suitable for computer graphics generated by a computer that streams through 5G, such as omnidirectional VR, telemedicine, unmanned aircraft, and auto-pilot automobiles, or image content transmission scenes captured by a camera.
Disclosure of Invention
Based on the above existing problems and the defects of the prior art, the present application provides a method and a device for wirelessly transmitting and receiving an ultra high definition video using a medium compression algorithm, wherein the ultra high definition video can be displayed in real time with ultra low delay and lossless image quality by a display device coupled to the receiving device by performing video lossless compression on a video composed of computer graphics generated by a computer or images shot by a camera by using the medium compression algorithm and then transmitting the video through a 5G network.
In a first aspect, the present application provides an ultra high definition video wireless transmission method using an in-application compression algorithm, where the wireless transmission method includes:
the method comprises the steps that the sending equipment obtains the ultra-high-definition video from video source equipment based on an input interface; the ultra-high definition video comprises: computer graphics generated by a computer, or images taken by a camera;
the sending equipment encodes the ultrahigh-definition video through a medium-voltage compression encoding algorithm to obtain code stream data;
the sending equipment encapsulates the code stream data based on a communication protocol to obtain a data packet;
the sending equipment sends the data packet to a first 5G communication module of which the transmission rate is not lower than a first threshold value; the first 5G communication module is used for sending the data packet.
In a second aspect, the present application provides an ultra high definition video wireless receiving method using an in-application compression algorithm, where the wireless receiving method includes:
the receiving equipment receives the data packet through a second 5G communication module with the transmission rate not lower than a second threshold value;
the receiving equipment de-encapsulates the data packet based on a communication protocol to obtain code stream data;
the receiving equipment decodes the code stream data based on a medium-pressure decoding algorithm to obtain an ultra-high-definition video; the ultra-high definition video comprises: computer graphics generated by a computer, or images captured by a camera.
In a third aspect, the present application provides an ultra high definition video wireless transmission device applying a compression algorithm, the wireless transmission device comprising: a first memory for storing first application program instructions and a first processor coupled to the first memory, the first processor being configured to invoke the first application program instructions to perform the ultra high definition video wireless transmission method of the in-application compression algorithm of the first aspect.
In a fourth aspect, the present application provides an ultra high definition video wireless receiving device applying an in-process compression algorithm, the wireless receiving device comprising: a second memory and a second processor coupled to the second memory, the second memory being used for storing a second application program instruction, the second processor being configured to invoke the second application program instruction and execute the ultra high definition video wireless receiving method using the compression algorithm in the second aspect.
The application provides an ultra-high-definition video wireless transmitting and receiving method and device applying a compression algorithm. The wireless transmission method comprises the following steps: the method comprises the steps that the sending equipment obtains the ultra-high-definition video from video source equipment based on an input interface; the ultra-high definition video comprises: computer graphics generated by a computer, or images taken by a camera; the sending equipment encodes the ultrahigh-definition video through a medium-voltage compression encoding algorithm to obtain code stream data; the sending equipment encapsulates the code stream data based on a communication protocol to obtain a data packet; the sending equipment sends the data packet to a first 5G communication module of which the transmission rate is not lower than a first threshold value; the first 5G communication module is used for sending the data packet. Compared with the prior art, the beneficial effects of the embodiment of the application are that: after the ultrahigh-definition video is subjected to lossless video compression by adopting a medium compression algorithm and is transmitted through a 5G wireless network, the ultrahigh-definition video can be displayed in real time with ultralow time delay and lossless image quality by a display device coupled with a receiving device.
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In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of an ultra high definition video wireless transmission method applying a compression algorithm according to the present application.
Fig. 2 is a schematic diagram of an intra block copy prediction method provided in the present application.
Fig. 3 is a schematic diagram of a wide-angle intra prediction method provided in the present application.
Fig. 4 is a schematic flowchart of an ultra high definition video wireless receiving method applying a compression algorithm according to the present application.
Fig. 5 is a schematic structural diagram of an ultra high definition video wireless transmission device applying a compression algorithm provided by the present application.
Fig. 6 is a schematic structural diagram of an ultra high definition video wireless receiving device applying a compression algorithm provided by the present application.
Detailed Description
The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are some, not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, it is a schematic flow chart of an ultra high definition video wireless transmission method using a compression algorithm provided in the present application, as shown in fig. 1,
s101, the sending equipment acquires the ultra-high-definition video from the video source equipment based on the input interface.
In the embodiment of the present application, acquiring, by a sending device, an ultra high definition video from a video source device based on an input interface includes:
the sending equipment acquires the ultra-high definition video from video source equipment (such as a notebook computer, a desktop computer, a DVD, a set-top box, a video camera and the like) based on an input interface; among other things, input interfaces may include, but are not limited to: HDMI (high Definition Multimedia interface), Type-C interface, DP (DisplayPort) interface, USB (Universal Serial bus) interface, MIPI (Mobile Industry Processor interface), DVI (digital visual interface) interface, or VGA (Video Graphics Array) interface;
among others, ultra high definition video may include, but is not limited to: ultra high definition video in YUV format or ultra high definition video in RGB format; the ultra-high definition video comprises: computer generated computer graphics (such as dinosaur of live dragon and tiger in video) or images shot by a camera (such as family happiness photo and company employee photo collective); ultra high definition video data may also include, but is not limited to, the following features: the resolution may be: 1080P, 4K or 8K resolution; the frame rate may be 30FPS, 60FPS, 100FPS, or 120 FPS; high Dynamic Range hdr (high Dynamic Range imaging).
S102, the sending equipment encodes the ultra-high-definition video through a medium-voltage compression encoding algorithm to obtain code stream data.
In this embodiment, the method for encoding the ultra-high-definition video by the sending device through the medium-voltage compression encoding algorithm to obtain the code stream data may include the following steps:
step 1: the method comprises the steps that a sending device respectively encodes a first image in an ultra-high-definition video through different video compression algorithms to obtain a plurality of encoded data related to the first image; the first image is any frame image in the ultra-high-definition video;
step 2: the transmitting equipment compares the data quantity of each coded data in the plurality of coded data with each other, and determines the coded data with the minimum data quantity from the plurality of coded data;
and step 3: the sending equipment takes the encoded data with the minimum data quantity as code stream data associated with the first image, and takes a compression algorithm for enabling the sending equipment to obtain the encoded data with the minimum data quantity as a medium compression algorithm associated with the first image.
It should be noted that, the sending device encodes the ultra-high-definition video by using a medium-compression encoding algorithm to obtain code stream data, which may include, but is not limited to, the following manners:
mode 1: the transmitting equipment encodes the ultra-high-definition video based on an encoding algorithm of an intra-frame block copy prediction mode through the first integrated circuit to obtain code stream data. In the embodiment of the present application, the first integrated circuit may include, but is not limited to: an FPGA chip, an ASIC chip, or an eASIC chip. In particular, the method comprises the following steps of,
step 1: the transmitting device divides each frame image in the ultra high definition video through the first integrated circuit, so that each frame image is divided into a plurality of intra blocks respectively.
More specifically, the sending device divides each frame image in the ultra high definition video through the first integrated circuit to obtain a plurality of maximum coding units, and then divides each maximum coding unit into a plurality of intra blocks with different sizes.
Step 2: the sending equipment predicts the current intra block through the first integrated circuit based on the intra block copy prediction mode to obtain the predicted value of the current frame. In particular, the method comprises the following steps of,
the sending equipment copies a target intra block of a frame image where the current intra block is located through a first integrated circuit as a predicted value of the current frame; the target intra block is a coded intra block; alternatively, the first and second electrodes may be,
the transmitting apparatus copies, by the first integrated circuit, one intra block of a plurality of target intra blocks of a frame image in which the current intra block is located, as a prediction value of the current frame.
The intra block copy prediction approach is briefly described below in conjunction with fig. 2.
As shown in FIG. 2, when the current intra block is PU0Then in PU0In the frame image, a target intra-frame block V is searched out according to a certain rule0As a current intra block PU0The predicted value of (2); when the current intra block is PU1In PU1In the frame image, a target intra-frame block V is searched out according to a certain rule1As a current intra block PU1The predicted value of (2).
It should be noted that the target intra block may be: any intra block except the current intra block in the frame image in which the current intra block is located, the last intra block from left to right in the current intra block, the first intra block from top to bottom in the frame image in which the current intra block is located, the last intra block from top to bottom in the frame image in which the current intra block is located, the upper left corner in the frame image in which the current intra block is located, or the upper right corner in the frame image in which the current intra block is located.
It should be noted that, before copying, by the first integrated circuit, the intra block encoded in the frame image in which the current intra block is located, the transmitting apparatus further includes:
the method comprises the steps that a sending device completes coding of an intra block except a current intra block in a frame image where the current intra block is located through a coding algorithm of a first integrated circuit based on an intra block copy prediction mode to obtain a target intra block; alternatively, the first and second electrodes may be,
the sending equipment completes coding of a plurality of intra blocks except the current intra block in a frame image where the current intra block is located through a coding algorithm of a first integrated circuit based on an intra block copy prediction mode to obtain a plurality of target intra blocks.
And step 3: the sending device performs difference operation on the predicted value of the current intra block and the true value of the current intra block through the first integrated circuit to obtain a residual block, and transforms the residual block to obtain a transformation coefficient. In particular, the method comprises the following steps of,
the sending equipment carries out difference operation on the predicted value of the current frame inner block and the real value of the current frame inner block through a first integrated circuit to obtain a residual block, and carries out short-time Fourier transform on the residual block to obtain a short-time discrete Fourier transform coefficient; alternatively, the first and second electrodes may be,
the sending device performs difference operation on the predicted value of the current intra block and the true value of the current intra block through the first integrated circuit to obtain a residual block, and performs Discrete Sine Transform (DST) on the residual block to obtain a Discrete Sine Transform coefficient.
And 4, step 4: and the sending equipment quantizes the transformation coefficient through the first integrated circuit to obtain quantized data.
The transmission device may quantize the transform coefficient based on a target quantization step size by the first integrated circuit to obtain quantized data, wherein the transmission device may obtain the target quantization step size according to a quantization formula.
It should be noted that the transform coefficient has a larger value range, and after the quantization process, the value range of the transform coefficient can be reduced, so as to implement compression on data.
And 5: and the sending equipment performs entropy coding on the quantized data through the first integrated circuit to obtain code stream data.
Specifically, the sending device performs zigzag scanning on quantized data through the first integrated circuit to obtain a series of numbers, so that the quantized data is reduced from two dimensions to one dimension; then, the transmitting device entropy encodes the series of numbers through the first integrated circuit, and finally code stream data can be obtained.
It should be noted that, the sending device entropy-encodes the quantized data by the first integrated circuit to obtain the code stream data, which may include, but is not limited to, the following approaches:
route 1: the sending equipment encodes the quantized data through a first integrated circuit based on a run-length encoding algorithm to obtain code stream data;
route 2: the transmitting equipment encodes the quantized data through a first integrated circuit based on a Huffman coding algorithm to obtain code stream data;
route 3: the sending equipment encodes the quantized data through a constant block encoding algorithm of a first integrated circuit based on a binary image to obtain code stream data;
route 4: and the sending equipment encodes the quantized data through the first integrated circuit based on a quad-tree coding algorithm to obtain code stream data.
Route 5: and the sending equipment encodes the quantized data through a context-based adaptive variable length coding algorithm of the first integrated circuit to obtain code stream data.
Route 6: and the sending equipment encodes the quantized data through a context-based adaptive binary arithmetic algorithm of the first integrated circuit to obtain code stream data.
Specifically, the method for obtaining code stream data by a transmitting device encoding an ultra high definition video based on an intra block copy prediction mode encoding algorithm by a first integrated circuit may include:
and the sending equipment encodes the ultra-high-definition video based on an HEVC-SCC encoding algorithm through the first integrated circuit to obtain code stream data. In particular, the method comprises the following steps of,
step 1: the sending equipment carries out self-adaptive color conversion on the screen video content in the RGB format to obtain the converted screen video content;
step 2: and the transmitting equipment predicts the transformed screen video content by combining a cross component prediction technology and an intra block copying technology, and then obtains a residual error through calculation.
And step 3: the sending equipment carries out transform skip coding on the residual error, and then carries out quantization and entropy coding on the residual error to obtain code stream data; or, after the sending device encodes the residual DPCM, the sending device quantizes and encodes the data after the residual DPCM is encoded to obtain the code stream data.
Mode 2: the sending equipment encodes the ultra-high-definition video through the first integrated circuit based on the coding algorithm of the wide-angle intra-frame prediction mode to obtain code stream data. In particular, the method comprises the following steps of,
since the intra block may be a rectangular block, the use probability of the reference pixel above the horizontal class of intra blocks (wider than wider) is greater than that of the left reference pixel, and the use probability of the reference pixel above the vertical class of intra blocks (wider than wider) is less than that of the left reference pixel.
The wide-angle intra prediction approach is briefly described below in conjunction with fig. 3.
As shown in fig. 3, in the process of performing wide-angle intra prediction, which 65 angle prediction modes are used as candidate prediction modes is selected according to the aspect ratio, specifically as follows:
when the aspect ratio is 1, the modes 2 to 66 are also used, 65 angle modes in total;
when the aspect ratio is 2, the mode 8 to the mode 72 are used, namely the original mode 2-mode 7 is changed into the mode 7-mode 72, and 65 angle modes are used;
when the aspect ratio is more than or equal to 4, the mode 12 to the mode 76 are used, namely the original mode 2-mode 11 is changed into the mode 67-mode 76, and 65 angle modes are used in total;
when the aspect ratio is 1/2, the mode-6 to the mode 60 are used, namely the original mode 61-mode 66 is changed into the mode-1-mode-6, and 65 angle modes are used;
when the aspect ratio is less than or equal to 1/4, using the modes-10 to 56, namely changing the original mode 57-66 into the mode-1-10, and totally 65 angle modes; the 20 expanded angle mode prediction processes are the same as the previous angle mode prediction processes.
S103, the sending equipment encapsulates the code stream data based on a communication protocol to obtain a data packet.
In this embodiment of the present application, the sending device encapsulates the code stream data based on the communication protocol to obtain the data packet, which may include but is not limited to the following manners:
mode 1: the sending equipment encapsulates the code stream data based on a User Datagram Protocol (UDP) communication Protocol through a first integrated circuit to obtain a UDP data packet; in particular, the method comprises the following steps of,
the sending equipment respectively adds a UDP data packet head and a UDP data packet tail to the front and back positions of the code stream data based on the UDP protocol through the first integrated circuit to obtain the UDP data packet comprising the code stream data, the UDP protocol head and the UDP protocol tail. The UDP header or the UDP trailer may include control information such as a destination address, a source address, a port number, and a flag bit.
It should be noted that the sending device may further encapsulate, by using the first integrated circuit, the code stream data and the acquired control instruction based on the UDP protocol, to obtain a UDP data packet.
It should be noted that the sending device may obtain the above control instruction from the control device (mouse, keyboard, computer) through the IR receiving head, RS232 interface, USB interface or UART interface. Among them, the USB interface may include but is not limited to: USB3.0, USB2.0, USB3.1 or Type-C interface.
Mode 2: the sending equipment encapsulates the code stream data based on a TCP (Transmission control protocol) communication protocol through a first integrated circuit to obtain a TCP data packet;
it should be noted that the sending device may further encapsulate, by using the first integrated circuit, the code stream data and the acquired control instruction based on the TCP protocol, to obtain a TCP data packet.
Mode 3: and the sending equipment encapsulates the code stream data based on the user-defined communication protocol through the first integrated circuit to obtain a user-defined data packet.
Wherein, the self-defining protocol comprises: the simple protocol is designed to keep the requirements of data coding in the sending equipment and data decoding in the receiving equipment synchronous.
It should be noted that the sending device may further encapsulate, through the first integrated circuit, the code stream data and the acquired control instruction based on the custom protocol, to obtain a custom data packet.
S104, the sending equipment sends the data packet to a first 5G communication module of which the transmission rate is not lower than a first threshold value.
In this embodiment, the sending device sending the data packet to the first 5G communication module whose transmission rate is not lower than the first threshold may include:
the sending equipment sends the data packet to the first 5G communication module through the communication interface of the first 5G communication module; the communication interface of the first 5G communication module may include, but is not limited to: a PCIE interface, a USB3.0 interface, etc.; preferably, the first threshold may be 100Mbps, 300Mbps, 500Mbps, or 1 Gbps.
After the sending device sends the data packet to the first 5G communication module with the transmission rate not lower than the first threshold, the following processing manner may also be executed:
treatment method 1: the sending equipment sends the data packet to the receiving equipment through the first 5G communication module;
treatment method 2: the sending equipment sends the data packet to the base station through the first 5G communication module, and the base station is used for forwarding the data packet to the receiving equipment.
It should be noted that the first 5G communication module may be a 5G communication module integrated with a plurality of antennas, in other words, the first 5G communication module may be a 5G communication module that encapsulates a plurality of antennas inside by using an aip (antenna in package) technology, and may improve the transmission rate of the protocol stream data and reduce the transmission delay by using a large-scale Multiple Input Multiple Output (MIMO) technology.
In addition, the first 5G communication module optimizes the structure design of the radio frame, that is, designs the data format of the protocol data stream input to the first 5G communication module, that is, reduces the Transmission Time Interval (TTI).
In addition, the first 5G communication module also adopts a channel coding technology in a convolutional code coding form.
In summary, the transmission rate of the ultra-high definition video in the embodiment of the present application can be improved by using the Aip technology to perform multi-antenna layout, performing optimal design on the frame format of the data, and using the channel coding technology in the form of convolutional code coding.
When the reception apparatus includes: the first receiving device and the second receiving device,
the sending device sends the data packet to the receiving device through the first 5G communication module, which may include the following processes:
the sending device sends the data packets to the first receiving device and the second receiving device through the first 5G communication module respectively.
When the base station includes: when the first base station and the second base station are in use,
the sending device sends the data packet to the base station through the first 5G communication module, which may include, but is not limited to, the following steps:
the sending device can send the data packet to the first base station through the first 5G communication module, forward the data packet to the second base station through the first base station, and forward the data packet to the receiving device through the second base station.
It should be noted that the sending device may further receive, through the first 5G communication module, the preset data packet sent by the receiving device, and after decapsulating the preset data packet, obtain a preset control instruction, where the preset control instruction is used to control a video source device connected to the sending device (for example, the video source device is turned on or turned off). The sending equipment can send the preset control instruction to video source equipment coupled with the sending equipment through the infrared transmitting head.
It should be noted that fig. 2-3 are only used for explaining the embodiments of the present application and should not limit the present application.
The embodiment of the application provides a wireless transmission method of ultra-high-definition video by applying a medium-voltage compression algorithm, wherein after video lossless compression is carried out on the ultra-high-definition video by a transmission device by adopting the medium-voltage compression algorithm, the ultra-high-definition video is transmitted to a receiving device through a 5G wireless network, and the ultra-high-definition video can be displayed in real time with ultra-low delay and lossless image quality by a display device coupled with the receiving device.
Referring to fig. 4, it is a schematic flowchart of an ultra high definition video wireless receiving method using a compression algorithm in the application provided in the present application, and as shown in fig. 4, the wireless receiving method may at least include the following steps:
s401, the receiving device receives the data packet through a second 5G communication module with the transmission rate not lower than a second threshold value.
In this embodiment of the application, the receiving device receives the data packet through the second 5G communication module whose transmission rate is not lower than the second threshold, which may include but is not limited to the following manners:
mode 1: the receiving equipment receives the data packet sent by the sending equipment through a second 5G communication module with the transmission rate not lower than a second threshold value; preferably, the second threshold may be 100Mbps, 300Mbps, 500Mbps, or 1 Gbps. .
It should be noted that the second threshold value and the first threshold value in the present application may be equal in magnitude.
Mode 2: and the receiving equipment receives the data packet forwarded by the base station through the second 5G communication module with the transmission rate not lower than the second threshold value.
The second 5G communication module may be a 5G communication module integrating several antennas.
It should be noted that, the second 5G communication module adopts a design mode of high-reliability and low-delay communication.
Specifically, the receiving device may perform decapsulation and decompression operations on a data packet received by the multiple antennas encapsulated based on the Aip technique by using a channel decoding technique in the form of a convolutional code, and then may obtain ultra high definition videos corresponding to the data packet, respectively, and the display device connected to the receiving device may display the specific ultra high definition videos without delay.
It should be noted that, when the transmission apparatus includes: when the first sending device and the second sending device are used,
the receiving device receives the data packet through the second 5G communication module with the transmission rate not lower than the second threshold, and may include the following steps:
and the receiving equipment receives the data packet sent by the first sending equipment and the data packet sent by the second sending equipment through a second 5G communication module with the transmission rate not lower than a second threshold value.
S402, the receiving device de-encapsulates the data packet based on a communication protocol to obtain code stream data.
In the embodiment of the application, the receiving device may output the data packet obtained from the second 5G communication module through the communication interface of the second 5G communication module to the second integrated circuit; the second integrated circuit is used for carrying out processing operations such as decapsulation and decoding on the obtained data packet; the communication interface of the second 5G communication module may include, but is not limited to: a PCIE interface, a USB3.0 interface, etc. The second integrated circuit in the embodiment of the present application may include, but is not limited to: an FPGA chip, an ASIC chip, or an eASIC chip.
It should be noted that, the decapsulating, by the receiving device, the data packet based on the communication protocol to obtain the code stream data may include, but is not limited to, the following manners:
mode 1: the receiving equipment decapsulates the UDP data packet based on the UDP communication protocol through the second integrated circuit to obtain code stream data; in particular, the method comprises the following steps of,
the receiving device can remove the UDP data packet head and the UDP data packet tail from the UDP data packet respectively through the second integrated circuit based on the UDP protocol to obtain the code stream data.
It should be noted that, the receiving device decapsulates the UDP data packet based on the UDP protocol by using the second integrated circuit, and may obtain a control instruction in addition to the code stream data, where the control instruction is used to control a display device connected to the receiving device.
Mode 2: the receiving equipment decapsulates the TCP data packet based on a TCP communication protocol through a second integrated circuit to obtain code stream data;
it should be noted that, the receiving device may decapsulate the TCP data packet based on the TCP protocol by using the second integrated circuit to obtain the code stream data, and may further obtain a control instruction, where the control instruction is used to control a display device connected to the receiving device.
Mode 3: and the receiving equipment decapsulates the custom data packet based on the custom communication protocol through the second integrated circuit to obtain code stream data.
It should be noted that the receiving device decapsulates the custom data packet based on the custom communication protocol through the second integrated circuit to obtain the code stream data, and may also obtain a control instruction, where the control instruction is used to control a display device connected to the receiving device.
S403, decoding the code stream data by the receiving equipment based on a medium-pressure decoding algorithm to obtain an ultra-high-definition video; the ultra-high definition video comprises: computer graphics generated by a computer, or images captured by a camera.
In the embodiment of the present application, the receiving device decodes the code stream data based on a medium-pressure decoding algorithm to obtain the ultra-high-definition video, which may include but is not limited to the following modes:
the receiving device can perform entropy decoding (such as run length decoding algorithm, Huffman decoding algorithm or constant block decoding algorithm based on binary image) on the code stream data through the second integrated circuit, then perform inverse quantization operation on the entropy-decoded data to recover transformation coefficients, perform inverse transformation on the recovered transformation coefficients to obtain residues, and perform reconstruction based on each intra block to recover the ultra-high definition video.
It should be noted that the receiving device may further obtain a preset control instruction from the control device through an IR receiving head, an RS232 interface, a USB interface, or a UART interface integrated inside, encapsulate the preset control instruction into a preset data packet, and send the preset data packet to the sending device or the base station through a second 5G communication module in the receiving device, where the preset control instruction may be used to control a video source device connected to the sending device (e.g., start or shut down the video source device).
The application provides ultra-high-definition video wireless transmission equipment applying a medium-definition compression algorithm, which can be used for realizing the wireless transmission method described in the embodiment of fig. 1. The wireless transmitting device shown in fig. 5 can be used to implement the description in the embodiment of fig. 1.
As shown in fig. 5, wireless transmitting device 50 may include, but is not limited to: a first memory 501, a first processor 502 coupled to the first memory 501, and a first 5G communication module 503 coupled to the first processor 502.
A first memory 501, operable to: a first application program instruction;
a first processor 502 operable to: the first application program instruction stored in the first memory 501 is called to implement the wireless transmission method of the ultra high definition video of the compression algorithm in the application described in fig. 1.
The first 5G communication module 503 may be configured to send a data packet in the wireless sending method for the ultra high definition video with the compression algorithm in the application illustrated in fig. 1.
A first processor 502 operable to:
acquiring an ultra-high-definition video from video source equipment based on an input interface; the ultra-high definition video comprises: computer graphics generated by a computer, or images taken by a camera;
coding the ultra-high definition video based on a medium-pressure compression coding algorithm to obtain code stream data;
packaging the code stream data based on a communication protocol to obtain a data packet;
the data packet is sent to the first 5G communication module 503 whose transmission rate is not lower than the first threshold.
The first processor 502 may be specifically configured to:
acquiring an ultra-high-definition video from video source equipment based on an input interface; the input interface includes: an HDMI interface, a Type-C interface, a DP interface, a USB interface, an MIPI interface, a DVI interface or a VGA interface;
the first processor 502 may be specifically configured to:
mode 1: and coding the ultra-high-definition video through a coding algorithm of a first integrated circuit based on an intra-frame block copy prediction mode to obtain code stream data. The first integrated circuit in the embodiments of the present application may include, but is not limited to: an FPGA chip, an ASIC chip, or an eASIC chip. In particular, the method comprises the following steps of,
segmenting each frame image in the ultra-high-definition video through the first integrated circuit, so that each frame image is segmented into a plurality of intra blocks respectively;
predicting a current intra block by a first integrated circuit based on an intra block copy prediction mode to obtain a predicted value of the current frame;
performing difference operation on the predicted value of the current intra block and the real value of the current intra block through a first integrated circuit to obtain a residual block, and transforming the residual block to obtain a transformation coefficient;
quantizing the transform coefficients by a first integrated circuit to obtain quantized data;
and entropy coding the quantized data through the first integrated circuit to obtain code stream data.
More specifically, the present invention is to provide a novel,
and coding the ultra-high-definition video based on an HEVC-SCC coding algorithm through a first integrated circuit to obtain code stream data.
Mode 2:
and coding the ultra-high-definition video based on a coding algorithm of a wide-angle intra-frame prediction mode through the first integrated circuit to obtain code stream data.
The first processor 502 may be further specifically configured to:
packaging the code stream data based on a UDP communication protocol through a first integrated circuit to obtain a UDP data packet;
packaging the code stream data based on a TCP communication protocol through a first integrated circuit to obtain a TCP data packet; alternatively, the first and second electrodes may be,
and packaging the code stream data through the first integrated circuit based on a user-defined communication protocol to obtain a user-defined data packet.
A first 5G communication module 503, operable to:
sending the data packet to a receiving device; or, the data packet is sent to the base station, and the base station is configured to forward the data packet to the receiving device.
A first 5G communication module 503, operable to:
when the reception apparatus includes: the first receiving device and the second receiving device,
and respectively transmitting the data packet to the first receiving device and the second receiving device.
A first 5G communication module 503, operable to:
when the base station includes: when the first base station and the second base station are in use,
and sending the data packet to a first base station, forwarding the data packet to a second base station through the first base station, and forwarding the data packet to receiving equipment through the second base station.
The first 5G communication module 503 is further configured to receive a preset data packet sent by the receiving device; the first processor 502 may be further configured to decapsulate the preset data packet to obtain a preset control instruction; the transmission device 50 includes: the first memory 501, the first processor 502, and the first 5G communication module 503 may further include: and the infrared emission head is used for sending the preset control instruction to the video source equipment coupled with the sending equipment 50 so as to control the video source equipment.
It should be understood that the wireless transmitting device 50 is only one example provided by the embodiments of the present application, and the wireless transmitting device 50 may have more or less components than those shown, may combine two or more components, or may have a different configuration implementation of the components.
It is understood that, regarding the specific implementation of the functional components included in the wireless transmission device 50 of fig. 5, reference may be made to the embodiment of fig. 1, and details are not repeated here.
The application provides ultra-high-definition video wireless receiving equipment applying a compression algorithm, which can be used for realizing the wireless receiving method described in the embodiment of fig. 4. The wireless receiving device shown in fig. 6 can be used to implement the description in the embodiment of fig. 4.
As shown in fig. 6, wireless receiving device 60 may include, but is not limited to: a second memory 601, a second processor 602 coupled with the second memory 601, and a second 5G communication module 603 coupled with the second processor 602.
A second memory 601, operable to: a second application program instruction;
a second processor 602 operable to: and calling a second application program instruction stored in the second memory 601 to implement the wireless receiving method for the ultra-high-definition video of the compression algorithm in the application described in fig. 4.
The second 5G communication module 603 may be configured to receive a data packet in the wireless receiving method for the ultra high definition video applying the compression algorithm described in fig. 4.
The second 5G communication module 603 may be specifically configured to:
receiving a data packet transmitted by a transmitting device; alternatively, the first and second electrodes may be,
a data packet forwarded by a base station is received.
The second 5G communication module 603 may be specifically configured to:
when the transmission apparatus includes: when the first sending device and the second sending device are used,
and receiving the data packet sent by the first sending equipment and the data packet sent by the second sending equipment.
The second processor 602 may be specifically configured to:
decapsulating the UDP data packet through a second integrated circuit based on a UDP communication protocol to obtain code stream data;
decapsulating the TCP data packet through a second integrated circuit based on a TCP communication protocol to obtain code stream data;
and de-encapsulating the custom data packet through a second integrated circuit based on a custom communication protocol to obtain code stream data.
The second processor 602 may be specifically configured to:
after entropy decoding (such as a run length decoding algorithm, a Huffman decoding algorithm or a constant block decoding algorithm based on a binary image) is carried out on the code stream data through a second integrated circuit, inverse quantization operation is carried out on the entropy-decoded data to recover a transformation coefficient, the recovered transformation coefficient is subjected to inverse transformation to obtain a residual, and reconstruction is carried out on the basis of each intra block to recover the ultra-high definition video.
It should be noted that the receiving device 60 may also obtain the preset control instruction from the control device through an internal integrated IR receiving head, an RS232 interface, a USB interface or a UART interface.
The second processor 602 is further configured to: packaging the preset control instruction into a preset data packet; the second 5G communication module 603 may be further configured to: and sending the preset data packet to a sending device or a switch.
It should be understood that wireless receiving device 60 is only one example provided by embodiments of the present application, that wireless receiving device 60 may have more or fewer components than shown, may combine two or more components, or may have a different configuration implementation of components.
It is understood that, regarding the specific implementation of the functional components included in the wireless receiving device 60 of fig. 6, reference may be made to the embodiment of fig. 4, which is not described herein again.
Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses, devices or modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus, device or method may be implemented in other ways. For example, the components and steps of the various examples are described. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The above-described embodiments of the apparatus and device are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another apparatus, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices, apparatuses or modules, and may also be an electrical, mechanical or other form of connection.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (20)
1. An ultra high definition video wireless transmission method applying a medium compression algorithm is characterized by comprising the following steps:
the method comprises the steps that the sending equipment obtains the ultra-high-definition video from video source equipment based on an input interface; the ultra-high definition video comprises: computer graphics generated by a computer, or images taken by a camera;
the sending equipment encodes the ultrahigh-definition video through a medium-voltage compression encoding algorithm to obtain code stream data;
the sending equipment encapsulates the code stream data based on a communication protocol to obtain a data packet;
the sending equipment sends the data packet to a first 5G communication module of which the transmission rate is not lower than a first threshold value; the first 5G communication module is used for sending the data packet.
2. The radio transmission method according to claim 1,
the method for acquiring the ultra-high-definition video from the video source equipment by the sending equipment based on the input interface comprises the following steps:
the sending equipment acquires the ultra-high-definition video from video source equipment based on an input interface; the input interface includes: an HDMI interface, a Type-C interface, a DP interface, a USB interface, an MIPI interface, a DVI interface or a VGA interface;
wherein the ultra high definition video comprises: ultra high definition video in YUV format, or ultra high definition video in RGB format.
3. The radio transmission method according to claim 1,
the method for encoding the ultrahigh-definition video by the sending equipment through a medium-voltage compression encoding algorithm to obtain code stream data comprises the following steps:
the sending equipment encodes a first image in the ultra-high-definition video through different video compression algorithms respectively to obtain a plurality of encoded data associated with the first image; the first image is any frame image in the ultra-high definition video;
the transmitting device compares the data amount of each of the plurality of encoded data with each other, and determines the encoded data with the minimum data amount from the plurality of encoded data;
and the sending equipment takes the encoded data with the minimum data amount as the code stream data associated with the first image, and takes a compression algorithm for enabling the sending equipment to obtain the encoded data with the minimum data amount as the medium compression algorithm associated with the first image.
4. The radio transmission method according to claim 1,
the step of coding the ultra-high-definition video through the medium-compression coding algorithm by the sending equipment to obtain code stream data includes:
the transmitting equipment encodes the ultrahigh-definition video based on an encoding algorithm of an intra-frame block copy prediction mode through a first integrated circuit to obtain code stream data;
alternatively, the first and second electrodes may be,
and the transmitting equipment encodes the ultra-high-definition video through a first integrated circuit based on a coding algorithm of a wide-angle intra-frame prediction mode to obtain code stream data.
5. The radio transmission method according to claim 4,
the method for coding the ultrahigh-definition video based on the coding algorithm of the intra-frame block copy prediction mode by the sending equipment through the first integrated circuit to obtain code stream data comprises the following steps:
and the sending equipment encodes the ultra-high-definition video based on an HEVC-SCC encoding algorithm through the first integrated circuit to obtain code stream data.
6. The radio transmission method according to claim 4,
the method for coding the ultrahigh-definition video based on the coding algorithm of the intra-frame block copy prediction mode by the sending equipment through the first integrated circuit to obtain code stream data comprises the following steps:
the sending equipment divides each frame image in the ultra-high definition video through the first integrated circuit, so that each frame image is divided into a plurality of intra-frame blocks respectively;
the sending equipment predicts a current intra block through the first integrated circuit based on an intra block copy prediction mode to obtain a predicted value of the current frame;
the sending equipment carries out difference operation on the predicted value of the current intra block and the real value of the current intra block through the first integrated circuit to obtain a residual block, and the residual block is transformed to obtain a transformation coefficient;
the transmitting device quantizes the transform coefficients through the first integrated circuit to obtain quantized data;
and the sending equipment carries out entropy coding on the quantized data through the first integrated circuit to obtain code stream data.
7. The radio transmission method according to claim 6,
the sending device obtains a prediction value of a current frame by predicting the current frame intra block based on an intra block copy prediction mode through the first integrated circuit, and comprises:
the sending device copies a target intra block of a frame image in which the current intra block is located as a predicted value of the current frame through the first integrated circuit; the target intra block is an encoded intra block; alternatively, the first and second electrodes may be,
the transmitting apparatus copies, by the first integrated circuit, one intra block of a plurality of target intra blocks of a frame image in which the current intra block is located, as a prediction value of the current frame.
8. The radio transmission method according to claim 7,
before the transmitting apparatus copies, by the first integrated circuit, the intra block encoded in the frame image in which the current intra block is located, the method further includes:
the sending equipment completes coding of one intra block except the current intra block in a frame image where the current intra block is located through a coding algorithm of a first integrated circuit based on an intra block copy prediction mode to obtain a target intra block; alternatively, the first and second electrodes may be,
the sending device completes coding of a plurality of intra blocks except the current intra block in a frame image where the current intra block is located through a coding algorithm of a first integrated circuit based on an intra block copy prediction mode to obtain a plurality of target intra blocks.
9. The radio transmission method according to claim 6,
the sending device performs difference operation on the predicted value of the current intra block and the true value of the current intra block through the first integrated circuit to obtain a residual block, and transforms the residual block to obtain a transform coefficient, including:
the sending equipment carries out difference operation on the predicted value of the current frame inner block and the real value of the current frame inner block through the first integrated circuit to obtain a residual block, and carries out short-time Fourier transform on the residual block to obtain a short-time discrete Fourier transform coefficient; alternatively, the first and second electrodes may be,
and the sending equipment performs difference operation on the predicted value of the current intra block and the true value of the current intra block through the first integrated circuit to obtain a residual block, and performs discrete sine transformation on the residual block to obtain a discrete sine transformation coefficient.
10. The radio transmission method according to claim 1,
the sending device entropy-encodes the quantized data through the first integrated circuit to obtain code stream data, and the method comprises the following steps:
the sending equipment encodes the quantized data through the first integrated circuit based on a run length encoding algorithm to obtain the code stream data; alternatively, the first and second electrodes may be,
the sending equipment encodes the quantized data through the first integrated circuit based on a Huffman coding algorithm to obtain the code stream data; alternatively, the first and second electrodes may be,
the sending equipment encodes the quantized data through the first integrated circuit based on a constant block encoding algorithm of a binary image to obtain code stream data; alternatively, the first and second electrodes may be,
and the sending equipment encodes the quantized data through the first integrated circuit based on a quadtree coding algorithm to obtain the code stream data.
11. The radio transmission method according to claim 1,
the method for encapsulating the code stream data by the sending equipment based on a communication protocol to obtain a data packet comprises the following steps:
the sending equipment encapsulates the code stream data based on a UDP communication protocol through the first integrated circuit to obtain a UDP data packet; alternatively, the first and second electrodes may be,
the sending equipment encapsulates the code stream data based on a TCP communication protocol through the first integrated circuit to obtain a TCP data packet; alternatively, the first and second electrodes may be,
and the sending equipment encapsulates the code stream data based on a user-defined communication protocol through the first integrated circuit to obtain a user-defined data packet.
12. The radio transmission method according to claim 1,
after the sending device sends the data packet to the first 5G communication module with a transmission rate not lower than the first threshold, the sending device further includes:
the sending equipment sends the data packet to receiving equipment through the first 5G communication module;
alternatively, the first and second electrodes may be,
and the sending equipment sends the data packet to a base station through the first 5G communication module, and the base station is used for forwarding the data packet to the receiving equipment.
13. The wireless transmission method of claim 12,
the receiving apparatus includes: a first receiving device and a second receiving device;
the sending device sends the data packet to a receiving device through the first 5G communication module, and the sending device includes:
and the sending device sends the data packet to the first receiving device and the second receiving device through the first 5G communication module respectively.
14. The wireless transmission method of claim 12,
the base station includes: a first base station and a second base station;
the sending device sends the data packet to a base station through the first 5G communication module, and includes:
the sending device sends the data packet to the first base station through the first 5G communication module, forwards the data packet to the second base station through the first base station, and forwards the data packet to the receiving device through the second base station.
15. An ultra-high-definition video wireless receiving method applying a medium compression algorithm is characterized by comprising the following steps:
the receiving equipment receives the data packet through a second 5G communication module with the transmission rate not lower than a second threshold value;
the receiving equipment de-encapsulates the data packet based on a communication protocol to obtain code stream data;
the receiving equipment decodes the code stream data based on a medium-pressure decoding algorithm to obtain an ultra-high-definition video; the ultra-high definition video comprises: computer graphics generated by a computer, or images captured by a camera.
16. The radio receiving method as claimed in claim 15,
the receiving device receives the data packet through a second 5G communication module with the transmission rate not lower than a second threshold value, and the method comprises the following steps:
the receiving equipment receives the data packet sent by the sending equipment through a second 5G communication module with the transmission rate not lower than a second threshold value;
alternatively, the first and second electrodes may be,
and the receiving equipment receives the data packet forwarded by the base station through a second 5G communication module of which the transmission rate is not lower than a second threshold value.
17. The radio receiving method as claimed in claim 16,
the transmission apparatus includes: a first transmitting device, a second transmitting device;
the receiving device receives the data packet through a second 5G communication module with the transmission rate not lower than a second threshold value, and the method comprises the following steps:
and the receiving equipment receives the data packet sent by the first sending equipment and the data packet sent by the second sending equipment through a second 5G communication module of which the transmission rate is not lower than a second threshold value.
18. The radio receiving method as claimed in claim 15,
the receiving device decapsulates the data packet based on a communication protocol to obtain code stream data, including:
the receiving equipment de-encapsulates the UDP data packet based on the UDP communication protocol through the second integrated circuit to obtain code stream data;
alternatively, the first and second electrodes may be,
the receiving equipment decapsulates the TCP data packet based on a TCP communication protocol through the second integrated circuit to obtain the code stream data;
alternatively, the first and second electrodes may be,
and the receiving equipment decapsulates the custom data packet based on a custom communication protocol through the second integrated circuit to obtain the code stream data.
19. An ultra high definition video wireless transmission apparatus to which a medium compression algorithm is applied, comprising:
a first memory for storing first application program instructions and a first processor coupled to the first memory, the first processor configured to invoke the first application program instructions to perform the ultra high definition video wireless transmission method of the in-application compression algorithm of claims 1-14.
20. An ultra high definition video wireless receiving apparatus applying a medium compression algorithm, comprising:
a second memory for storing second application program instructions and a second processor coupled to the second memory, the second processor being configured to invoke the second application program instructions to perform the ultra high definition video wireless reception method applying the compression algorithm of claims 15-18.
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