CN109257588A - Data transmission method, terminal, server and storage medium - Google Patents

Abstract

The embodiment of the invention discloses a data transmission method, a terminal, a server and a storage medium, wherein the method comprises the following steps: acquiring depth data and two-dimensional video data in three-dimensional video data to be transmitted; comparing the depth data with preset depth data aiming at the depth data of each frame, and determining difference data between the depth data and the preset depth data; and sending two-dimensional video data in the three-dimensional video data to be transmitted, and sending the difference data.

Description

A data transmission method, terminal, server and storage medium

technical field

This application relates to data transmission technology, and relates to, but is not limited to, a data transmission method, terminal, server and storage medium.

Background technique

With the continuous development of the mobile communication network, the transmission rate of the mobile communication network is rapidly increasing, thus providing strong technical support for the generation and development of the 3D video service. The three-dimensional video data includes two-dimensional video data (eg, RGB data) and depth data (Depth data), and the transmission of the three-dimensional video data is to transmit the two-dimensional video data and the depth data respectively. In the transmission process of 3D video data, since each frame of image needs to transmit Depth data, the amount of this data is very large. Therefore, when such a large amount of data is fully transmitted, it will inevitably affect the transmission speed and the accuracy of transmission.

SUMMARY OF THE INVENTION

To solve the above technical problems, embodiments of the present application provide a data transmission method, a terminal, a server, and a storage medium.

The technical solutions of the embodiments of the present application are implemented as follows:

The embodiment of the present application provides a data transmission method, the method includes:

Acquiring depth data and two-dimensional video data in the three-dimensional video data to be transmitted;

For the depth data of each frame, compare the depth data with the preset depth data, and determine the difference data between the depth data and the preset depth data;

The two-dimensional video data in the three-dimensional video data to be transmitted is sent to a mobile edge computing (Mobile Edge Computing, MEC) server, and the difference data is sent.

In the above solution, the depth data for each frame is compared with the preset depth data, and the difference data between the depth data and the preset depth data is determined, including:

For the depth data of each frame, compare the depth data of the current frame with the depth data of the previous frame of the current frame, and determine the difference between the depth data of the current frame and the depth data of the previous frame difference data;

Correspondingly, the sending of the two-dimensional video data in the three-dimensional video data to be transmitted to the mobile edge computing server, and sending the difference data, includes:

The two-dimensional video data of each frame and the difference data are sent to the MEC server.

In the above solution, after the outputting the difference data, the method further includes:

obtaining the depth data of the next frame corresponding to the difference data;

If the depth data of the next frame is different from the depth data corresponding to the difference data, the depth data of the next frame is transmitted.

The embodiment of the present application also provides a data transmission method, which is applied to the MEC server, and the method includes:

Receive the difference data and two-dimensional video data sent by the terminal;

Restoring the depth data in the 3D video data to be transmitted according to the difference data;

The depth data and the two-dimensional video data are synthesized into three-dimensional video data.

In the above solution, before synthesizing the depth data and the two-dimensional video data into three-dimensional video data, the method further includes:

Receive difference data and 2D video data;

At least restore the depth data of the current frame according to the difference data;

The depth data of the current frame, the preset depth data and the two-dimensional video data are synthesized into three-dimensional video data.

An embodiment of the present application further provides a terminal, where the terminal includes: an acquisition unit, a first data transmission unit, and a first communication unit; wherein,

The acquisition unit is used to acquire depth data and two-dimensional video data in the three-dimensional video data to be transmitted;

The first data transmission unit is configured to compare the depth data with the preset depth data for the depth data of each frame, and determine the difference data between the depth data and the preset depth data;

The first communication unit is configured to send the two-dimensional video data in the three-dimensional video data to be transmitted to the mobile edge computing MEC server, and send the difference data.

In the above solution, the first data transmission unit is configured to compare the depth data of the current frame with the depth data of the previous frame of the current frame for the depth data of each frame, and determine the current frame. difference data between the depth data of the frame and the depth data of the previous frame;

Correspondingly, the first communication unit is configured to send the two-dimensional video data of each frame and the difference data to the MEC server.

In the above solution, the obtaining unit is further configured to obtain the depth data of the next frame corresponding to the difference data;

The first communication unit is further configured to transmit the depth data of the next frame if the depth data of the next frame is different from the depth data corresponding to the difference data.

An embodiment of the present application further provides an MEC server, where the server includes a second communication unit and a second data transmission unit; wherein,

The second communication unit is used for receiving difference data and two-dimensional video data sent by the terminal;

The second data transmission unit is configured to restore the depth data in the three-dimensional video data to be transmitted according to the difference data; and is further configured to synthesize the depth data and the two-dimensional video data into three-dimensional video data.

In the above solution, the second communication unit is further configured to receive difference data and two-dimensional video data;

The second data transmission unit is also used to restore at least the depth data of the current frame according to the difference data; and is also used to synthesize the depth data of the current frame, the preset depth data and the two-dimensional video data for 3D video data.

The embodiments of the present application further provide a computer storage medium, on which computer instructions are stored, and when the instructions are executed by the processor, implement the steps of the data transmission method applied to the terminal described in the embodiments of the present application; or, the instructions are When executed by the processor, the steps of the data transmission method applied to the MEC server described in the embodiments of the present application are implemented.

Embodiments of the present application further provide a terminal, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the applications described in the embodiments of the present application when the processor executes the program Steps of a data transmission method for a terminal.

Embodiments of the present application further provide an MEC server, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the methods described in the embodiments of the present application when the processor executes the program. Steps of the data transfer method applied to the MEC server.

Embodiments of the present application provide a data transmission method, terminal, server, and storage medium, wherein, first, depth data and two-dimensional video data in three-dimensional video data to be transmitted are acquired; then, for the depth data of each frame, the depth The data is compared with the preset depth data, and the difference data between the depth data and the preset depth data is determined; finally, the two-dimensional video in the three-dimensional video data to be transmitted is sent to the mobile edge computing MEC server. data, and send the difference data. By adopting the technical solutions of the embodiments of the present application, by transmitting only different depth data from the terminal, the transmission amount of the depth data is greatly reduced, and the fluency of the network is improved.

Description of drawings

1 is a schematic diagram of a system architecture to which a data transmission method according to an embodiment of the present application is applied;

FIG. 2 is a schematic flowchart of an implementation of a data transmission method according to an embodiment of the present application;

FIG. 3 is an implementation interaction diagram of a data transmission method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a composition structure of a terminal according to an embodiment of the present application;

5 is a schematic diagram of a composition structure of a server according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a hardware composition of a data transmission device according to an embodiment of the present application.

Detailed ways

Before the technical solutions of the embodiments of the present application are described in detail, the system architecture to which the data transmission methods of the embodiments of the present application are applied is briefly described first. The data transmission method in the embodiment of the present application is applied to a service related to 3D video data, such as a 3D video data sharing service, or a live broadcast service based on 3D video data, and the like. In this case, due to the large amount of 3D video data, the depth data and 2D video data transmitted respectively require high technical support in the data transmission process, so the mobile communication network needs to have a faster data transmission rate , and a more stable data transmission environment.

FIG. 1 is a schematic diagram of a system architecture of the application of the data transmission method according to the embodiment of the application; as shown in FIG. 1 , the system may include a terminal, a base station, an MEC server, a service processing server, a core network, and the Internet (Internet), etc.; the MEC server and the service A high-speed channel is established between the processing servers through the core network to achieve data synchronization.

Taking the application scenario of the interaction between two terminals shown in Figure 1 as an example, the MEC server A is the MEC server deployed near the terminal A (sender), and the core network A is the core network in the area where the terminal A is located; correspondingly, the MEC server B is the MEC server deployed near the terminal B (receiving end), and the core network B is the core network in the area where the terminal B is located; Establish high-speed channels for data synchronization.

Wherein, after the 3D video data sent by terminal A is transmitted to MEC server A, MEC server A synchronizes the data to the service processing server through core network A; and then MEC server B obtains the 3D video data sent by terminal A from the service processing server, and sent to terminal B for presentation.

Here, if terminal B and terminal A realize transmission through the same MEC server, then terminal B and terminal A directly realize the transmission of 3D video data through an MEC server without the participation of the service processing server. This method is called local return method. Specifically, it is assumed that terminal B and terminal A transmit 3D video data through MEC server A. After the 3D video data sent by terminal A is transmitted to MEC server A, MEC server A sends the 3D video data to terminal B for presentation.

Here, the terminal may select an evolved base station (eNB) to access the 4G network, or a next-generation evolved base station (gNB) to access the 5G network based on the network conditions, or the configuration of the terminal itself, or an algorithm configured by itself, so that the The eNB is connected to the MEC server through a Long Term Evolution (Long Term Evolution, LTE) access network, so that the gNB is connected to the MEC server through a Next Generation Access Network (NG-RAN).

Here, the MEC server is deployed on the edge of the network close to the terminal or data source. The so-called close to the terminal or close to the data source is not only logically located, but also geographically close to the terminal or close to the data source. Different from the existing mobile communication network where the main service processing servers are deployed in several large cities, multiple MEC servers can be deployed in one city. For example, in an office building with many users, an MEC server can be deployed near the office building.

Among them, the MEC server, as an edge computing gateway with core capabilities of integrating network, computing, storage and application, provides platform support for edge computing including device domain, network domain, data domain and application domain. It connects various smart devices and sensors, provides smart connection and data transmission services nearby, and allows different types of applications and data to be processed in the MEC server to achieve real-time business, business intelligence, data aggregation and interoperability, security and privacy protection, etc. Key intelligent services can effectively improve the efficiency of intelligent business decision-making.

The present application will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The embodiment of the present application provides a data transmission method, which is applied to a terminal, and the terminal may be a mobile terminal such as a mobile phone and a tablet computer, or a terminal of a type such as a computer. FIG. 2 is a schematic flowchart of the implementation of a data transmission method according to an embodiment of the present application; as shown in FIG. 2 , the method includes the following steps:

Step S201, acquiring depth data and two-dimensional video data in the three-dimensional video data to be transmitted.

Here, the depth data in the 3D video data to be transmitted may be collected, or the depth data sent by other devices may be received.

Step S202, for the depth data of each frame, compare the depth data with the preset depth data, and determine the difference data between the depth data and the preset depth data.

Here, M frames of depth data are included in the 3D video data, and the depth data of each frame is compared with the preset depth data one by one. If they are different, the difference data between the two is determined; then the difference data is transmitted to MEC server. If the depth data is the same as the preset depth data, the depth data will not be transmitted, or only one piece of information to indicate that the two are the same will not be transmitted, and the amount of data transmission will not be increased.

Step S203: Send the two-dimensional video data in the three-dimensional video data to be transmitted to the mobile edge computing MEC server, and send the difference data.

Here, only two-dimensional video data and difference data are transmitted to the MEC server. The difference data can be understood as the difference between the pixels corresponding to the depth data and the pixels corresponding to the preset depth data.

That is to say, when the terminal transmits the depth data to the MEC server, it does not transmit the complete depth data of each frame to the MEC server, but only transmits the difference data that is different from the preset depth data to the MEC server. In this way, The MEC server can recover the corresponding depth data according to the difference data, and then synthesize the 3D video data according to the depth data and the 2D video data.

In the embodiment, only the difference data between the depth data is transmitted to the MEC server, which reduces the transmission amount of the depth data and improves the network fluency.

In this embodiment, as an implementation manner, the obtaining of 3D video data includes: the terminal obtains 3D video data from a collection component capable of collecting at least depth data; the collection component can establish a communication link with at least one terminal so that the corresponding terminal obtains the three-dimensional video data.

In this embodiment, since the acquisition component capable of collecting depth data is relatively expensive, the terminal does not have the function of collecting 3D video data, but collects the 3D video data through the acquisition component independent of the terminal, and then collects the 3D video data through the acquisition component and the terminal in the terminal. The communication component establishes a communication link, so that the terminal obtains the three-dimensional video data collected by the collection component. Wherein, the acquisition component can be specifically implemented by at least one of the following: a depth camera, a binocular camera, a 3D structured light camera module, and a Time Of Flight (TOF, Time Of Flight) camera module.

Here, the collection component can establish a communication link with at least one terminal to transmit the collected 3D video data to the at least one terminal, so that the corresponding terminal can obtain the 3D video data, so that the 3D video data collected by one collection component can be shared. To at least one terminal, so as to realize the sharing of acquisition components.

As another embodiment, the terminal itself has the function of collecting 3D video data. It can be understood that the terminal is provided with a collection component capable of collecting depth data at least, for example, at least one of the following components is provided: a depth camera, a binocular camera, a 3D structure Optical camera module and TOF camera module to collect 3D video data.

Wherein, the obtained three-dimensional video data includes two-dimensional video data and depth data; the two-dimensional video data is used to represent a plane image, such as RGB data; distance between.

An embodiment of the present application further provides a data transmission method. FIG. 3 is an implementation interaction diagram of the data transmission method according to an embodiment of the present application. As shown in FIG. 3 , the method includes the following steps:

Step S301, the terminal acquires depth data and two-dimensional video data in the three-dimensional video data to be transmitted.

Here, the step S301 may be that the terminal collects the depth data in the 3D video data to be transmitted through structured light, or another device transmits the depth data to the terminal.

Step S302, the terminal compares the depth data of the current frame with the depth data of the previous frame of the current frame for the depth data of each frame, and determines the depth data of the current frame and the depth data of the previous frame. Difference data between depth data.

Here, for example, there are a total of 100 frames of depth data. For each frame, the first frame of depth data is completely transmitted to the MEC server, and then the second frame of depth data is compared with the first frame of depth data. And determine the difference data between the two, and transmit the difference data to the MEC server, that is, in this embodiment, when transmitting the depth data of the second frame, what is actually transmitted is the depth data of the second frame and the first frame. Difference data between depth data.

Step S303, the terminal sends the two-dimensional video data of each frame and the difference data to the MEC server.

Here, the terminal sends the two-dimensional video data of each frame to the MEC server, and sends the difference data between each adjacent two frames to the MEC server. After step S303, the embodiment of the present application further includes: acquiring the depth data of the next frame corresponding to the difference data; if the depth data of the next frame is different from the depth data corresponding to the difference data, transmitting the next frame. One frame of depth data. That is to say, on the basis that the depth data of the second frame is different from the depth data of the first frame, and the difference data between the two is transmitted to the MEC server, if the depth data of the third frame is also different from the depth data of the second frame, it can be The complete third frame of depth data may be directly transmitted, or difference data between the third frame of depth data and the second frame of depth data may be transmitted.

Step S304, the MEC server receives the difference data and the two-dimensional video data.

Here, the difference data is the difference data between the depth data of the current frame and the depth data of the previous frame. The difference data can be understood as the difference between the pixels corresponding to the depth data of the current frame and the pixels corresponding to the depth data of the previous frame.

Step S305, the MEC server restores the depth data in the 3D video data to be transmitted according to the difference data.

Step S306, the MEC server synthesizes the depth data and the two-dimensional video data into three-dimensional video data.

In the embodiment of the present application, the terminal transmits the two-dimensional video data and the difference data between the depth data of the current frame and the depth data of the previous frame to the MEC server, instead of the complete depth data of the two frames, thereby greatly reducing the The amount of data transmission increases the network transmission speed.

When transmitting 3D video data in the related art, the depth data and 2D video data transmitted respectively require high technical support in the data transmission process, so the mobile communication network is required to have a fast data transmission rate and a relatively stable data transmission rate. transmission environment. However, since each frame of image needs to transmit Depth data, the amount of data is very large, resulting in excessive network data transmission and network congestion.

Based on this, an embodiment of the present application provides a data transmission method, which is suitable for a relatively low-speed, static modeling scenario. Before transmitting the two-dimensional video data and depth data from the terminal to the MEC server, the pre-processing of the depth data is performed. Processing, the non-compression method compares the difference between the pixels of the depth data of the current frame and the pixels of the depth data of the previous frame in the three-dimensional video data, and obtains the difference data, and then transmits the difference data through the high-speed transmission network. to the MEC server, and then the MEC server combines the difference data and the acquired two-dimensional video data into three-dimensional video data. For example, the three-dimensional video data is divided into many frames, B represents one frame of depth data, and I represents the difference data between the pixels of the depth data of the next frame immediately adjacent to B and the pixels corresponding to B. In this embodiment, the transmission of the The ways of depth data can include various ways (here, in order to avoid redundancy and repetition, only two ways of transmitting the depth data are explained):

The first method of transmitting the depth data: first, transmit a complete frame of depth data; secondly, analyze the difference data between the depth data of the first frame and the depth data of the next frame, and then transmit the difference data (ie When the second frame is transmitted, it is actually the difference data transmitted); again, when the third frame is transmitted, a complete frame of depth data of the next frame corresponding to the difference data is transmitted; finally, when the fourth frame is transmitted, Similar to the method of transmitting the second frame, first analyze the difference data between the pixels corresponding to the depth data of the third frame and the pixels corresponding to the depth data of the fourth frame, and transmit the difference data (that is, B-I-B-I-B-I, during the transmission process, The ratio of depth data transmitted for a full frame to transmitted difference data is 1:1).

The first method of transmitting the depth data: first, transmit a complete frame of depth data; secondly, analyze the difference data between the depth data of the first frame and the depth data of the next frame, and then transmit the difference data (ie When the second frame is transmitted, it is actually the difference data transmitted); again, analyze the difference data between the depth data of the second frame and the depth data of the next frame, and then transmit the difference data (that is, when transmitting the third frame, In fact, it is the difference data transmitted); again, when the fourth frame is transmitted, a complete frame of depth data of the next frame corresponding to the difference data corresponding to the third frame is transmitted; then, when the fifth frame is transmitted, it is transmitted again. The difference data between the depth data of the fourth frame and the depth data of the fifth frame, ... (ie, B-I1-I2-B-I1-I2-B-I1-I2, in the process of transmission, the transmission The ratio of depth data to transmission difference data for a full frame is 1:2). Obviously, in this embodiment, in the process of transmitting depth data, the ratio of the transmitted depth data of the complete frame to the transmitted difference data may not only be 1:1 or 1:2, but also any other ratio.

In the embodiment of the present application, when transmitting the depth data of the 3D video data, only the depth data of the pixels with difference between the current frame and the previous frame is transmitted, which not only greatly reduces the network data transmission, but also effectively improves the smoothness of the network transmission.

In order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application further provides a terminal. FIG. 4 is a schematic diagram of a composition structure of a terminal according to an embodiment of the application; as shown in FIG. 4 , the terminal includes: an acquisition unit 41, a first data transmission unit 42 and a first communication unit 43; wherein,

The acquisition unit 41 is used to acquire depth data and two-dimensional video data in the three-dimensional video data to be transmitted;

The first data transmission unit 42 is configured to compare the depth data with the preset depth data for the depth data of each frame, and determine the difference data between the depth data and the preset depth data;

The first communication unit 43 is configured to send the two-dimensional video data in the three-dimensional video data to be transmitted to the mobile edge computing MEC server, and send the difference data.

In one embodiment, the first data transmission unit 42 is configured to compare the depth data of the current frame with the depth data of the previous frame of the current frame for the depth data of each frame, and determine the depth data of the current frame. Difference data between the depth data of the current frame and the depth data of the previous frame;

Correspondingly, the first communication unit 43 is configured to send the two-dimensional video data of each frame and the difference data to the MEC server.

In one embodiment, as shown in FIG. 4 , the terminal further includes: the obtaining unit 41, further configured to obtain the depth data of the next frame corresponding to the difference data;

The first communication unit 43 is further configured to transmit the depth data of the next frame if the depth data of the next frame is different from the depth data corresponding to the difference data.

In this embodiment of the present application, the first data transmission unit 33 in the terminal can be implemented by a processor in the terminal, such as a central processing unit (CPU, Central Processing Unit), a digital signal processor (DSP, Digital Signal Processor), Microcontroller Unit (MCU, Microcontroller Unit) or Programmable Gate Array (FPGA, Field-Programmable Gate Array), etc.; the first communication unit 32 in the terminal, in practical applications, can be implemented through a communication model group (including: basic communication suite, operating system, communication module, standardized interface and protocol, etc.) and transceiver antenna implementation; the acquisition unit 31 in the terminal can be realized by a stereo camera, a binocular camera or a structured light camera in practical applications It can be realized, or can be realized by a communication module (including: basic communication suite, operating system, communication module, standardized interface and protocol, etc.) and a transceiver antenna; the detection unit 34 in the terminal can be realized by a processor such as a CPU in practical applications , DSP, MCU or FPGA, etc. are implemented in combination with communication modules.

It should be noted that: when the terminal provided in the above embodiment performs data transmission, only the division of the above program modules is used as an example for illustration. In practical applications, the above processing can be allocated to different program modules according to needs. The internal structure is divided into different program modules to complete all or part of the processing described above. In addition, the terminal and the data transmission method embodiments provided by the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.

Correspondingly, in order to implement the method on the server side of the embodiment of the present application, the embodiment of the present application further provides a server, which is specifically an MEC server. Fig. 5 is a schematic diagram of the composition structure of a server according to an embodiment of the application; as shown in Fig. 5, the server includes a second communication unit 51 and a second data transmission unit 52; wherein,

The second communication unit 51 is used for receiving difference data and two-dimensional video data sent by the terminal;

The second data transmission unit 52 is configured to restore the depth data in the three-dimensional video data to be transmitted according to the difference data; and is further configured to synthesize the depth data and the two-dimensional video data into three-dimensional video data.

In one embodiment, the second communication unit 51 is further configured to receive difference data and two-dimensional video data;

The second data transmission unit 52 is also used to restore at least the depth data of the current frame according to the difference data; and is also used to convert the depth data of the current frame, the preset depth data and the two-dimensional video data. Synthesized into 3D video data.

In this embodiment of the present application, the second data transmission unit 52 in the server may be implemented by a processor in the server, such as a CPU, DSP, MCU, or FPGA, in practical applications; the second communication in the server The unit 51 can be implemented by a communication module (including: a basic communication suite, an operating system, a communication module, standardized interfaces and protocols, etc.) and a transceiver antenna in practical applications.

It should be noted that: when the server provided in the above embodiment performs data transmission, only the division of the above program modules is used as an example for illustration. In practical applications, the above transmission can be allocated to different program modules according to needs. The internal structure is divided into different program modules to complete all or part of the processing described above. In addition, the server provided by the above embodiments and the data transmission method embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.

Based on the hardware implementation of the above device, an embodiment of the present application further provides a data transmission device. FIG. 6 is a schematic structural diagram of the hardware composition of the data transmission device according to the embodiment of the present application. As shown in FIG. 6 , the data transmission device 60 includes a memory 61. A processor 62 and a computer program stored on a memory and executable on the processor. As a first embodiment, when the data transmission device is a terminal, when the processor located in the terminal executes the program, it realizes: acquiring the depth data and the two-dimensional video data in the three-dimensional video data to be transmitted; for the depth data of each frame, Compare the depth data with the preset depth data, and determine the difference data between the depth data and the preset depth data; send the three-dimensional video to be transmitted to the Mobile Edge Computing (Mobile Edge Computing, MEC) server 2D video data in the data, and send the difference data.

In one embodiment, when the processor at the terminal executes the program, it is realized: for the depth data of each frame, compare the depth data of the current frame with the depth data of the previous frame of the current frame, and determine Difference data between the depth data of the current frame and the depth data of the previous frame; send the two-dimensional video data of each frame and the difference data to the MEC server.

In one embodiment, when the processor located in the terminal executes the program, it realizes: acquiring the depth data of the next frame corresponding to the difference data; if the depth data of the next frame and the depth data corresponding to the difference data Otherwise, the depth data of the next frame is transmitted.

As a second embodiment, when the data transmission device is a server, when the processor located in the server executes the program, it realizes: receiving the difference data and two-dimensional video data sent by the terminal; recovering the three-dimensional video data to be transmitted according to the difference data and synthesizing the depth data and the two-dimensional video data into three-dimensional video data.

In one embodiment, when the processor at the server executes the program, it realizes: receiving difference data and two-dimensional video data; restoring at least the depth data of the current frame according to the difference data; converting the depth data of the current frame, The preset depth data and the two-dimensional video data are synthesized into three-dimensional video data.

It can be understood that the data transmission device (terminal or server) further includes a communication interface 63; various components in the data transmission device (terminal or server) are coupled together through a bus system. It can be understood that the bus system is used to realize the connection communication between these components. In addition to the data bus, the bus system also includes a power bus, a control bus and a status signal bus.

The embodiments of the present application further provide a computer storage medium, on which computer instructions are stored, and when the instructions are executed by the processor, implement the steps of the data transmission method applied to the terminal described in the embodiments of the present application; or, the instructions are When executed by the processor, the steps of the data transmission method applied to the MEC server described in the embodiments of the present application are implemented.

Embodiments of the present application further provide a terminal, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the applications described in the embodiments of the present application when the processor executes the program Steps of a data transmission method for a terminal.

Embodiments of the present application further provide an MEC server, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the methods described in the embodiments of the present application when the processor executes the program. Steps of the data transfer method applied to the MEC server.

In the several embodiments provided in this application, it should be understood that the disclosed method and smart device may be implemented in other manners. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms. of.

The unit described above as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may all be integrated into one second processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, execute It includes the steps of the above method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic disk or an optical disk and other media that can store program codes.

Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence or in the parts that make contributions to the prior art. The computer software products are stored in a storage medium and include several instructions for A computer device (which may be a personal computer, a server, or a mobile phone, etc.) is caused to execute all or part of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a removable storage device, a ROM, a RAM, a magnetic disk or an optical disk.

It should be noted that the technical solutions described in the embodiments of the present application may be combined arbitrarily unless there is a conflict.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application.

Claims (13)

1. A data transmission method, characterized in that, applied to a terminal, the method comprising: Acquiring depth data and two-dimensional video data in the three-dimensional video data to be transmitted; For the depth data of each frame, compare the depth data with the preset depth data, and determine the difference data between the depth data and the preset depth data; The two-dimensional video data in the three-dimensional video data to be transmitted is sent, and the difference data is sent. 2. The method according to claim 1, wherein, for the depth data of each frame, the depth data and preset depth data are compared to determine the difference between the depth data and the preset depth data. difference data, including: For the depth data of each frame, compare the depth data of the current frame with the depth data of the previous frame of the current frame, and determine the difference between the depth data of the current frame and the depth data of the previous frame difference data; Correspondingly, sending two-dimensional video data in the three-dimensional video data to be transmitted, and sending the difference data, including: The two-dimensional video data of each frame and the difference data are transmitted. 3. The method according to claim 1, wherein after the outputting the difference data, the method further comprises: obtaining the depth data of the next frame corresponding to the difference data; If the depth data of the next frame is different from the depth data corresponding to the difference data, the depth data of the next frame is transmitted. 4. a data transmission method, is characterized in that, is applied to MEC server, described method comprises: Receive the difference data and two-dimensional video data sent by the terminal; Restoring the depth data in the 3D video data to be transmitted according to the difference data; The depth data and the two-dimensional video data are synthesized into three-dimensional video data. 5. The method according to claim 4, wherein before synthesizing the depth data and the two-dimensional video data into three-dimensional video data, the method further comprises: Receive difference data and 2D video data; At least restore the depth data of the current frame according to the difference data; The depth data of the current frame, the preset depth data and the two-dimensional video data are synthesized into three-dimensional video data. 6. A terminal, characterized in that the terminal comprises: an acquisition unit, a first data transmission unit and a first communication unit; wherein, The acquisition unit is used to acquire depth data and two-dimensional video data in the three-dimensional video data to be transmitted; The first data transmission unit is configured to compare the depth data with the preset depth data for the depth data of each frame, and determine the difference data between the depth data and the preset depth data; The first communication unit is configured to send two-dimensional video data in the three-dimensional video data to be transmitted, and send the difference data. 7. The terminal according to claim 6, wherein the first data transmission unit is configured to, for the depth data of each frame, convert the depth data of the current frame with the depth data of the previous frame of the current frame. The depth data is compared to determine the difference data between the depth data of the current frame and the depth data of the previous frame; Correspondingly, the first communication unit is configured to send the two-dimensional video data of each frame and the difference data. 8. The terminal according to claim 6, wherein the obtaining unit is further configured to obtain the depth data of the next frame corresponding to the difference data; The first communication unit is further configured to transmit the depth data of the next frame if the depth data of the next frame is different from the depth data corresponding to the difference data. 9. A MEC server, characterized in that the server comprises a second communication unit and a second data transmission unit; wherein, The second communication unit is used for receiving difference data and two-dimensional video data sent by the terminal; The second data transmission unit is configured to restore the depth data in the three-dimensional video data to be transmitted according to the difference data; and is further configured to synthesize the depth data and the two-dimensional video data into three-dimensional video data. 10. The server according to claim 9, wherein the second communication unit is further configured to receive difference data and two-dimensional video data; The second data transmission unit is also used to restore at least the depth data of the current frame according to the difference data; and is also used to synthesize the depth data of the current frame, the preset depth data and the two-dimensional video data for 3D video data. 11. A computer storage medium on which computer instructions are stored, characterized in that, when the instructions are executed by a processor, the steps of the data transmission method according to any one of claims 1 to 3 are implemented; or, the instructions are executed by the processor When executed, the steps of the data transmission method of claim 4 or 5 are realized. 12. A terminal, comprising a memory, a processor and a computer program stored on the memory and running on the processor, wherein the processor implements any one of claims 1 to 3 when the processor executes the program. Describe the steps of the data transmission method. 13. A MEC server comprising a memory, a processor and a computer program stored on the memory and running on the processor, wherein the processor implements the data of claim 4 or 5 when executing the program The steps of the transfer method.