CN115225851A - Method, device, equipment and medium for processing peak shifting of ECG (electrocardiogram) video data - Google Patents
Method, device, equipment and medium for processing peak shifting of ECG (electrocardiogram) video data Download PDFInfo
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Abstract
According to the scheme, the target pre-occupation time delay of each ECG is obtained by receiving the number of IPCs (inter-phase communication) hung down and the frame rate range of each ECG sent by at least two ECGs and according to the minimum frame rate and the number of IPCs. Then, acquiring the offset duration of each ECG according to the target pre-occupation delay of the ECG, and sending the target pre-occupation delay and the offset duration of each ECG to the ECG. According to the minimum frame rate and the IPC number, the target pre-occupation time delay of each ECG is obtained, the offset duration of the ECG is further obtained, the packet loss rate of video data is effectively reduced, and the phenomena of screen splash and the like are further avoided.
Description
Technical Field
The present application relates to the field of video processing technologies, and in particular, to a method, an apparatus, a device, and a medium for processing peak shifting of Edge Collaborative Gateway (ECG) video data.
Background
Internet Protocol Cameras (IPCs) are generally referred to as webcams, which compress video data for transmission through a network. The IPC is utilized to transmit the video data, so that the user can conveniently check the content captured by the IPC at any time and any place, and great convenience is provided for the life of the user. Therefore, how to utilize IPC for video data transmission is critical.
Currently, IPC mainly compresses video data for video data transmission, and then uploads the compressed video data to a server through a Client Premise Equipment (CPE). And then, the server sends the video data to the user equipment according to the request sent by the user equipment, so that the user can conveniently check the video data.
However, when multiple IPCs access the CPE simultaneously, video data collision may be caused, so that the packet loss rate of the video data is high, and screen splash and other phenomena are likely to occur.
Disclosure of Invention
The application provides an ECG video data peak staggering processing method, device, equipment and medium, and aims to solve the problems that when multiple IPCs are simultaneously connected to a CPE, video data collision is possibly caused, the packet loss rate of the video data is high, and phenomena such as screen splash and the like are easy to occur.
In a first aspect, an embodiment of the present application provides a peak shifting processing method for ECG video data, which is applied to a cloud coordination center CCC, and the method includes:
receiving the IPC number and the frame rate range of each ECG (Internet protocol camera) sent by at least two multi-edge collaborative gateways ECG, wherein the frame rate range comprises a minimum frame rate and a maximum frame rate;
acquiring the target preemption time delay of each ECG according to the minimum frame rate and the IPC number, wherein the target preemption time delay is used for indicating the maximum duration for sending video data by the ECG;
acquiring the offset duration of each ECG according to the target pre-occupation time delay of the ECG;
and sending the target pre-occupation time delay and the offset time length of each ECG to the ECG, wherein the offset time length is used for indicating the time length of waiting for sending the video data by the ECG.
In a possible design of the first aspect, the acquiring the target preemption delay for each ECG according to the minimum frame rate and the IPC number includes:
step a, acquiring the initial pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number;
step b, adding the initial pre-occupation time delay of each ECG to obtain the sum of the initial pre-occupation time delays;
step c, if the initial pre-occupation time delay sum is larger than the preset total pre-occupation time delay, calculating a first time delay of each ECG, wherein the first time delay is the ratio of the initial pre-occupation time delay sum to the IPC number;
step d, according to the first time delay and the maximum frame rate, reducing the initial pre-occupation time delay of the first ECG to obtain a first pre-occupation time delay, taking the first pre-occupation time delay as a new initial pre-occupation time delay, wherein the first time delay of the first ECG is greater than the first time delays of other ECGs, and the IPC number of the first ECG is greater than 1;
and e, repeating the steps b to d until the sum of the initial pre-occupation time delay is less than or equal to the preset total pre-occupation time delay, and taking the initial pre-occupation time delay of each ECG as the target pre-occupation time delay.
Optionally, the method further includes:
and if the sum of the initial pre-occupation time delay is less than or equal to the preset total pre-occupation time delay, taking the initial pre-occupation time delay of each ECG as a target pre-occupation time delay.
In another possible design of the first aspect, the acquiring the offset duration of the ECG according to the target pre-occupation time delay of each ECG includes:
selecting an ECG for processing, and setting the offset duration of the ECG to be 0;
selecting another ECG, accumulating the target pre-occupation time delays of the previously processed ECGs to obtain the offset time length of the ECG, and repeating the step until the offset time length of each ECG is obtained.
Optionally, the obtaining the initial pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number includes:
for each ECG, multiplying the minimum frame rate by the IPC number and rounding up to obtain the initial pre-emption time delay for the ECG.
Optionally, the reducing the initial pre-emption time delay of the first ECG to obtain the first pre-emption time delay includes:
subtracting the maximum frame rate from the initial pre-emption time delay of a first ECG to obtain the first pre-emption time delay.
In a second aspect, an embodiment of the present application provides a method for processing peak-shifting of ECG video data, which is applied to a multi-edge collaboration gateway ECG, and the method includes:
acquiring video data to be sent;
and sending the video data to a server according to a pre-obtained target pre-occupation time delay and an offset time length, wherein the target pre-occupation time delay and the offset time length are obtained by a cloud coordination center CCC according to a minimum frame rate and the number of Internet protocol cameras IPC, the target pre-occupation time delay is used for indicating the maximum time length used by the ECG for sending the video data, and the offset time length is used for indicating the time length required by the ECG for sending the video data.
In one possible design of the second aspect, the method further includes:
transmitting the IPC number of the ECG hangs down and a frame rate range to the CCC, the frame rate range including the minimum frame rate and a maximum frame rate;
and receiving the target pre-occupation time delay and the offset duration transmitted by the CCC.
In a third aspect, an embodiment of the present application provides an apparatus for processing peak shifting of ECG video data, including:
the receiving module is used for receiving the number of the lower-hanging Internet protocol cameras IPC of each ECG and the frame rate range, wherein the lower-hanging Internet protocol cameras IPC are sent by at least two multi-edge collaborative gateways ECG, and the frame rate range comprises a minimum frame rate and a maximum frame rate;
the acquisition module is used for acquiring the target pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number, and the target pre-occupation time delay is used for indicating the maximum time length used by the ECG for sending video data;
the acquisition module is further used for acquiring the offset duration of each ECG according to the target pre-occupation time delay of the ECG;
and the sending module is used for sending the target pre-occupation time delay and the offset time length of each ECG to the ECG, and the offset time length is used for indicating the time length of waiting for sending the video data by the ECG.
In a possible design of the third aspect, the obtaining module is specifically configured to:
step a, acquiring the initial pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number;
step b, adding the initial pre-occupation time delay of each ECG to obtain the sum of the initial pre-occupation time delays;
step c, if the initial pre-occupation time delay sum is larger than the preset total pre-occupation time delay, calculating a first time delay of each ECG, wherein the first time delay is the ratio of the initial pre-occupation time delay sum to the IPC number;
step d, according to the first time delay and the maximum frame rate, reducing the initial pre-occupation time delay of the first ECG to obtain a first pre-occupation time delay, taking the first pre-occupation time delay as a new initial pre-occupation time delay, wherein the first time delay of the first ECG is greater than the first time delays of other ECGs, and the IPC number of the first ECG is greater than 1;
and e, repeating the steps b to d until the sum of the initial pre-occupation time delay is less than or equal to the preset total pre-occupation time delay, and taking the initial pre-occupation time delay of each ECG as the target pre-occupation time delay.
Optionally, the peak-shifting processing apparatus for ECG video data further includes a processing module 44:
the processing module 44 is configured to take the initial preemption delay of each ECG as a target preemption delay if the sum of the initial preemption delays is less than or equal to a preset total preemption delay.
In another possible design of the third aspect, the obtaining module is specifically configured to:
selecting an ECG for processing, and setting the offset duration of the ECG to be 0;
selecting another ECG, accumulating the target pre-occupation time delays of the previously processed ECGs to obtain the offset time length of the ECG, and repeating the step until the offset time length of each ECG is obtained.
Optionally, the obtaining module is specifically configured to:
for each ECG, multiplying the minimum frame rate by the IPC number and rounding up to obtain the initial pre-emption time delay for the ECG.
Optionally, the obtaining module is specifically configured to:
subtracting the maximum frame rate from the initial pre-emption time delay of a first ECG to obtain the first pre-emption time delay.
In a fourth aspect, an embodiment of the present application provides an apparatus for processing peak shifting of ECG video data, including:
the acquisition module is used for acquiring video data to be transmitted;
the sending module is used for sending the video data to a server according to a pre-obtained target pre-occupation time delay and an offset time length, wherein the target pre-occupation time delay and the offset time length are obtained by a cloud coordination center CCC according to a minimum frame rate and the number of Internet protocol cameras IPC, the target pre-occupation time delay is used for indicating the maximum time length used by the ECG for sending the video data, and the offset time length is used for indicating the time length required by the ECG for sending the video data.
In a possible design of the fourth aspect, the peak shifting processing apparatus for ECG video data further includes: a receiving module;
the sending module is further configured to send the IPC number of the ECG drop and a frame rate range to the CCC, where the frame rate range includes the minimum frame rate and the maximum frame rate;
the receiving module is configured to receive the target pre-emption time delay and the offset time length that are sent by the CCC.
In a fifth aspect, an embodiment of the present application provides an electronic device, including: a processor, a transceiver, a memory and computer program instructions stored on the memory and executable on the processor, the processor when executing the computer program instructions being for implementing the method as provided by the first aspect, the second aspect and each possible design.
In a sixth aspect, embodiments of the present application may provide a computer-readable storage medium, in which computer-executable instructions are stored, and when executed by a processor, the computer-executable instructions are used to implement the method provided by the first aspect or the second aspect and each possible design.
In a seventh aspect, embodiments of the present application provide a computer program product, which includes a computer program that, when executed by a processor, is used to implement the method provided in the first aspect or the second aspect and each possible design.
According to the peak-shifting processing method, device, equipment and medium of ECG video data, in the scheme, the target pre-occupation time delay of each ECG is obtained by receiving the number of IPC (inter-phase communication) hanging down of each ECG sent by at least two ECGs and the frame rate range and according to the minimum frame rate and the number of IPC. Then, acquiring the offset duration of each ECG according to the target pre-occupation delay of the ECG, and sending the target pre-occupation delay and the offset duration of each ECG to the ECG. According to the minimum frame rate and the IPC number, the target pre-occupation time delay of each ECG is obtained, the offset duration of the ECG is further obtained, the packet loss rate of video data is effectively reduced, and the phenomena of screen splash and the like are further avoided.
Drawings
FIG. 1 is a schematic diagram of a video data transmission using IPC provided by the prior art;
FIG. 2 is a schematic diagram of a peak shifting processing method for ECG video data according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a first embodiment of a peak shifting processing method for ECG video data according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a first embodiment of an apparatus for peak shifting processing of ECG video data according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a second embodiment of a peak shifting apparatus for ECG video data according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Before introducing the embodiments of the present application, the background of the present application will be explained first.
IPC generally refers to webcams that compress video data for transmission over a network. The IPC is utilized to transmit the video data, so that the user can conveniently check the content captured by the IPC at any time and any place, and great convenience is provided for the life of the user. Therefore, how to utilize IPC for video data transmission is critical.
Fig. 1 is a schematic diagram illustrating a principle of video data transmission using IPC provided in the prior art. As shown in fig. 1, IPC performs video data transmission mainly by using h.26x coding algorithm of International Telecommunication Standardization Sector (ITU-T) for video data, or Moving Picture Experts Group (MPEG) algorithm of International Organization for Standardization (ISO)/International Electrotechnical Commission (IEC) for video data to perform video stream coding compression. Starting from the MPEG-1 algorithm, image data frames are organized in a Group of pictures (GOP) manner.
The starting frame of each GOP is typically an intra-compressed I-frame that can decode itself independent of any other frame. The compression rate of the I-frame is usually small, the occupied bandwidth is large, and in some scenes, the I-frame can occupy more than 50% of the bandwidth of the whole GOP. Each GOP typically includes, in addition to I-frames, P-frames, which are predictively encoded image frames, and B-frames, which are bidirectionally predictively encoded image frames. P-frames and B-frames usually only record differential information with respect to I-frames or other reference frames, and therefore occupy a small bandwidth.
N IPCs are exemplified as IPC1 and IPC2 … … IPCn, wherein n is a positive integer greater than 1. When multiple IPCs are simultaneously connected to a CPE, the IPCs compress video data and upload the video data to a server through the CPE. Although the fifth generation Mobile communication technology (5 th generation Mobile networks,5 g) enhanced Mobile broadband service (enhanced Mobile broadband Band, eMBB) provides a higher bandwidth, it is required by huge uplink bandwidth demands such as 4K high definition and multi-channel IPC concurrence, if the CPE frame rate is less than the IPC number, I frames between different IPCs are likely to collide, and if the frame rate is greater than the IPC camera number, I frames between different IPCs also have a certain probability to collide. Once the I frame collides, the bandwidth of the uplink instantaneous peak value is doubled or even multiplied, so that the capacity congestion is caused, the packet loss rate of the video data is high, and the phenomenon of screen splash and the like is easy to occur.
In view of the above problems, the inventive concept of the present application is as follows: when multiple IPCs simultaneously send video data, the I frames occupy a large bandwidth and may collide with each other, so that the capacity is congested, and the packet loss rate of the video data is high. Based on this, the inventor finds that if multiple ECGs can be acquired, the time and duration for sending video data by each ECG are limited, and the situation that multiple ECGs send video data at the same time is avoided, the problem that I frames collide can be solved, the packet loss rate of video data is further reduced, and the situation that screen splash occurs is reduced.
In the following, terms referred to in the embodiments of the present application are explained:
ECG: the edge processing gateway of the down-hanging multi-path IPC accesses the 5G network through a 5G standard (New Radio, NR) air interface in the uplink and is responsible for the I frame peak staggering processing between the down-hanging IPCs of the gateway.
Cloud Collaborative Center (CCC): and the cooperative processing centers of different ECGs are responsible for processing the peak error of the I frame among different ECGs.
Illustratively, the peak-shifting processing method for ECG video data provided by the embodiment of the present application can be applied to a schematic diagram shown in fig. 2. Fig. 2 is a schematic diagram of a peak shifting processing method for ECG video data according to an embodiment of the present invention, so as to solve the above technical problem. As shown in fig. 2, two ECGs and n IPCs are illustrated, which are ECG1, ECG2, IPC1, and … … IPCn, respectively, where n is a positive integer greater than 1. In practical application, the CCC determines the waiting time for transmitting the video data and the maximum time for transmitting the video data of each ECG according to the number of IPCs hung under each ECG and the frame rate range, that is, the target pre-occupation delay and the offset time for confirming each ECG. After each ECG is at least hung with one IPC, the IPC shoots video data, the video data needs to be sent to the ECG, so that the ECG can be conveniently accessed to a 5G network through a 5G NR air interface according to target pre-occupation time delay and offset duration, and the shot video data is sent to a server.
Hereinafter, the technical means of the present application will be described in detail by specific examples.
It should be noted that the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 3 is a flowchart illustrating a first embodiment of a peak shifting processing method for ECG video data according to an embodiment of the present application. As shown in fig. 3, the peak-shifting processing method of ECG video data may include the following steps:
s101: the number of IPCs hanging down the ECG and the frame rate range are sent to the CCC.
In this step, in order to enable the CCC to manage ECG transmission video data, the ECG needs to transmit the number of IPCs hanging down from the ECG and the frame rate range to the CCC.
For example, the number of IPCs is the number of all IPCs accessed to the same ECG, and may be 1, or may be a positive integer such as 2,3,4, which may be determined according to the actual situation, and this scheme does not specifically limit this.
Illustratively, the frame rate range is a frame rate range of all IPCs accessed by the same ECG, and includes a minimum frame rate and a maximum frame rate, which may be 50-60fps, or may be a positive integer constant such as 65-70fps,70-75fps,80-90fps, and the like, and may be determined according to practical situations, and the present solution does not specifically limit this.
The ECG may transmit, among other things, the cell identification, GOP range and gateway flag to the CCC.
Illustratively, the cell designation is used to identify the cell in which the ECG is located, and at least one ECG is present in a cell.
Further, when there are multiple ECGs in a cell, the time instants of the multiple ECGs need to be synchronized, for example, XX minutes and XX seconds are XX milliseconds at the same time in XX month and XX day of XXXX year in XXXX year, and the synchronized time instants of the ECGs may also include other forms, which the present scheme is not particularly limited.
Illustratively, the GOP range is a GOP range of all IPCs accessed by the ECG, and is composed of a minimum GOP and a maximum GOP, and may be a positive integer constant of 100-150 frames, or 200-250 frames, 250-300 frames, 350-450 frames, and the like, and may be determined according to actual situations, and the scheme does not specifically limit the GOP range.
Illustratively, the gateway tag is a device identifier that uniquely identifies the ECG.
Optionally, the number of IPCs, cell id, GOP range and gateway flag under ECG can be manually configured by staff.
S102: the CCC receives the number of IPCs pending for each ECG of at least two ECG transmissions and the frame rate range.
In this step, after the ECG sends the IPC number and frame rate range hung under the ECG to the CCC, the CCC needs to receive the IPC number and frame rate range for subsequent management of ECG transmission video data.
The frame rate range includes a minimum frame rate and a maximum frame rate.
In addition to this, the CCC may receive at least two ECG transmitted cell identifications, GOP ranges, and gateway flags.
Further, the CCC may also obtain a maximum number of cells after receiving at least two ECG transmitted cell flags. The maximum number of cells is the number of cells in which all ECGs are managed by the CCC, and may be 5, or may be a positive integer such as 6,8,9, which may be determined according to an actual situation, and this is not specifically limited by the present solution.
Still further, the CCC needs to set a total pre-occupation time delay, which is the maximum delay time of all ECG video data transmission, and may be 100ms, or positive integer constants such as 120ms,160ms,190ms, and the like, and may be determined according to actual conditions, and the present scheme does not specifically limit this.
Optionally, the time of all ECGs and IPCs under CCC also needs to be synchronized, for example, XX minutes XX seconds XX milliseconds at XX month XX day XX of XXXX year, XX minute XX seconds, and the time information of ECGs and IPCs may also include other forms, which is not specifically limited in this embodiment. In order to reduce the complexity of the calculation, the CCC start time or the first ECG access time may be selected as the synchronization time of the CCC.
In addition, the maximum cell number, the cell identifier and the gateway identifier of the CCC may be configured manually by the staff according to the predicted data or the measured data.
S103: and acquiring the target pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number.
In this step, the CCC needs to process the number of IPCs pending for each ECG and the frame rate range for at least two ECG transmissions acquired in order to acquire the target preemption latency for each ECG.
Wherein the target pre-emption time delay is used to indicate a maximum length of time for the ECG to transmit the video data.
Specifically, the specific process of acquiring the target pre-emption time delay for each ECG is as follows:
in the first step, the initial pre-emption time delay of each ECG is obtained according to the minimum frame rate and the IPC number.
Specifically, for each ECG, the minimum frame rate is multiplied by the IPC number and rounded up, obtaining the initial pre-emption time delay for the ECG.
Illustratively, the initial preemption delay for each ECG can be obtained by the following algorithm:
t _ preemption [ ] = roundup (1000/MIN _ FPS × MAX _ IPC), where t _ preemption [ ] is the initial preemption delay, MIN _ FPS is the minimum frame rate, and MAX _ IPC is the number of IPCs.
In a second step, the initial preemption delays for each ECG are summed to obtain an initial preemption delay sum.
And thirdly, calculating the first time delay of each ECG if the initial pre-occupation time delay sum is larger than the preset total pre-occupation time delay.
Optionally, the initial pre-emption time delay and the total pre-emption time delay are greater than a preset total pre-emption time delay, that is, the preset total pre-emption time delay is insufficient, the first time delay of each ECG needs to be calculated, and the first ECG is acquired according to the first time delay of each ECG, so as to reduce the pre-emption bandwidth of the first ECG subsequently.
Wherein, the first time delay is the ratio of the initial pre-occupation time delay to the IPC number.
And fourthly, reducing the initial pre-occupation time delay of the first ECG according to the first time delay and the maximum frame rate to obtain the first pre-occupation time delay, and taking the first pre-occupation time delay as a new initial pre-occupation time delay.
Wherein the first time delay of the first ECG is greater than the first time delays of the other ECGs, and the IPC number of the first ECG is greater than 1.
Specifically, a first time delay of each ECG is obtained, the first time delay of each ECG is calculated, and the ECG with the largest first time delay and the number of IPCs hung below greater than 1 is preferably selected as the first ECG. If a plurality of first time delays are the largest and are equal to each other, the ECG in which the number of the IPCs hanging down is the largest and is greater than 1 is selected as the first ECG.
Specifically, the first ECG initial pre-emption delay is subtracted by the maximum frame rate to obtain the first pre-emption delay.
Illustratively, the first preemption delay for each ECG can be obtained by the following algorithm:
t _ preemption1[ ] - =1000/MIN _ FPS, wherein t _ preemption1[ ] is the first preemption delay.
And fifthly, repeating the second step to the fifth step until the sum of the initial pre-occupation time delay is less than or equal to the preset total pre-occupation time delay, and taking the initial pre-occupation time delay of each ECG as a target pre-occupation time delay.
Optionally, if the sum of the initial preemption delay is less than or equal to the preset total preemption delay, the initial preemption delay of each ECG is taken as the target preemption delay for subsequent calculation.
S104: and acquiring the offset duration of the ECG according to the target pre-occupation delay of each ECG.
In this step, after the target preemption delay for each ECG is obtained, the offset duration of the ECG needs to be obtained based on the target preemption delay, so as to facilitate the ECG management.
Wherein the offset duration is used to indicate a duration of time that the ECG needs to wait to transmit the video data.
Specifically, an ECG is selected for processing, and the offset duration of the ECG is set to 0.
Further, another ECG is selected, the target pre-occupation time delays of the previously processed ECGs are accumulated to obtain the offset time length of the ECG, and the step is repeated until the offset time length of each ECG is obtained.
Illustratively, the example of CCC managing i +1 ECGs is illustrated. The CCC first needs to select an ECG for processing, where the CCC may select an ECG randomly or according to a gateway identifier, which is not limited in this embodiment. When the CCC selects the first ECG, at this time, i is 0, the offset duration of the ECG is set to 0, and may be set by using an algorithm t _ ECG _ bias [0] =0, where t _ ECG _ bias [ i ] is the offset duration. Thereafter, CCC selects the second ECG, where i is 1, and the offset duration of this ECG is the cumulative sum of the target preemption delays for previously processed ECGs, i.e., the offset duration of this ECG is the target preemption delay for the first ECG. And in the same way, according to the steps, the selected offset duration of the (i + 1) th ECG is the accumulated sum of the target pre-occupation time delays from the first ECG to the ith ECG.
Optionally, if the cell identifiers and GOP ranges obtained by the CCC and transmitted by multiple ECGs are inconsistent with those manually configured in advance, the target pre-occupation time delay and offset duration of the relevant cells and ECGs need to be recalculated.
S105: the target preemption delay and offset delay for each ECG are sent to the ECG.
In this step, since the ECG sending video data needs to be managed, the target pre-occupation time delay and the offset duration obtained by processing need to be issued to each ECG.
Wherein the target pre-emption time delay is used to indicate a maximum length of time for the ECG to transmit the video data.
Wherein the offset duration is used to indicate a duration of time that the ECG needs to wait to transmit the video data.
For example, the CCC may send the target preemption delay and the offset delay to each ECG through an Application Programming Interface (API) or other mechanisms, which may be set according to actual requirements, and the embodiments of the present Application are not limited thereto.
S106: and receiving the target pre-occupation time delay and the offset duration transmitted by the CCC.
In this step, the ECG needs to receive the target preemption delay and the offset duration transmitted by the CCC in response to the management of the CCC, so as to transmit video data according to the target preemption delay and the offset duration subsequently.
Wherein the target pre-emption time delay is used to indicate a maximum length of time for the ECG to transmit the video data.
Wherein the offset duration is used to indicate a duration of time that the ECG needs to wait to transmit the video data.
S107: and acquiring video data to be transmitted.
In this step, after the ECG obtains the target preemption delay and the offset duration, the ECG needs to obtain the video data to be sent, so as to send the video data by using the target preemption delay and the offset duration.
Alternatively, when multiple IPCs are hung under an ECG, a peak-shifting algorithm may be adopted for multiple IPCs within the ECG. All IPCs hanging down on the ECG need to send video data within the target preemption delay of the ECG, and the sequence of sending the video data by all IPCs hanging down on the ECG is sorted, and the IPC sending the video first needs to satisfy the following algorithm:
((t _ current-t _ CCC _ sync)% DELAY _ payload) = t _ ecg _ bias, where t _ current is the transmission time of the IPC, and CCC _ sync is the synchronization time of the CCC.
Optionally, a plurality of IPCs send video data to the ECG, and the ECG receives the video data sent by the plurality of IPCs hung down, so that the video data can be sent to the server according to the target preemption delay and the offset duration in the following process.
S108: and sending the video data to a server according to the pre-acquired target pre-occupation time delay and the offset time delay.
In this step, to prevent an I-frame collision, the ECG needs to send video data to the server according to the acquired target pre-emption time delay and offset time length.
The target pre-occupation time delay and the offset time length are obtained by the CCC according to the minimum frame rate and the IPC number, the target pre-occupation time delay is used for indicating the maximum time length used by the ECG for sending the video data, and the offset time length is used for indicating the time length required by the ECG for sending the video data.
Specifically, the ECG requires the transmission of video data according to the target preemption delay and offset duration of the CCC transmission. And the ECG starts timing after acquiring the target pre-occupation time delay and the offset time length transmitted by the CCC, and when the accumulated time length reaches the offset time length, the ECG shows that the time when the ECG transmits the video data arrives, and the ECG transmits the video data to the server. The ECG sends video data to the server for a duration that does not exceed the target preemption delay, i.e., inhibits sending video to the video server when the accumulated duration reaches the sum of the offset value and the target preemption delay.
According to the peak-shifting processing method of the ECG video data, the target pre-occupation time delay of each ECG is obtained by receiving the IPC number and the frame rate range of the lower hanging of each ECG sent by at least two ECGs and according to the minimum frame rate and the IPC number. Then, acquiring the offset duration of each ECG according to the target pre-occupation delay of the ECG, and sending the target pre-occupation delay and the offset duration of each ECG to the ECG. According to the minimum frame rate and the IPC number, the target pre-occupation time delay of each ECG is obtained, the offset duration of the ECG is further obtained, the packet loss rate of video data is effectively reduced, and the phenomena of screen splash and the like are further avoided. Under the condition that the existing network is provided with the inventory cameras, compared with an algorithm for directly adjusting IPC, the method averagely disperses the I frame into the P frame or the B frame, the IPC does not need to be reformed, and the cost can be effectively saved.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Fig. 4 is a schematic structural diagram of a first embodiment of an apparatus for processing peak shifting of ECG video data according to an embodiment of the present application. As shown in fig. 4, the peak shift processing device for ECG video data includes:
a receiving module 41, configured to receive the number of internet protocol cameras IPC hanging down for each ECG and a frame rate range, where the frame rate range includes a minimum frame rate and a maximum frame rate, and the number of the internet protocol cameras IPC is sent by at least two multi-edge collaborative gateways ECGs;
an obtaining module 42, configured to obtain a target preemption delay of each ECG according to the minimum frame rate and the IPC number, where the target preemption delay is used to indicate a maximum duration used by the ECG to send video data;
the obtaining module 42 is further configured to obtain an offset duration of the ECG according to the target preemption delay of each ECG;
and a sending module 43, configured to send the target preemption delay and the offset duration of each ECG to the ECG, where the offset duration is used to indicate a duration for which the ECG needs to wait for sending the video data.
In one possible design of the embodiment of the present application, the obtaining module 42 is specifically configured to:
step a, acquiring the initial pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number;
step b, adding the initial pre-occupation time delay of each ECG to obtain the sum of the initial pre-occupation time delays;
step c, if the initial pre-occupation time delay sum is larger than the preset total pre-occupation time delay, calculating a first time delay of each ECG, wherein the first time delay is the ratio of the initial pre-occupation time delay sum to the IPC number;
step d, according to the first time delay and the maximum frame rate, reducing the initial pre-occupation time delay of the first ECG to obtain the first pre-occupation time delay, taking the first pre-occupation time delay as a new initial pre-occupation time delay, wherein the first time delay of the first ECG is greater than the first time delays of other ECGs, and the IPC number of the first ECG is greater than 1;
and e, repeating the steps b to d until the sum of the initial pre-occupation time delay is less than or equal to the preset total pre-occupation time delay, and taking the initial pre-occupation time delay of each ECG as the target pre-occupation time delay.
In the above possible design, the peak shift processing apparatus for ECG video data may further include a processing module 44:
and the processing module 44 is configured to take the initial preemption delay of each ECG as a target preemption delay if the initial preemption delay and the total preemption delay are less than or equal to a preset total preemption delay.
In another possible design of the embodiment of the present application, the obtaining module 42 is specifically configured to:
selecting an ECG for processing, and setting the offset duration of the ECG to be 0;
another ECG is selected, the target pre-emption time delays of previously processed ECGs are accumulated to obtain the offset durations of the ECGs, and the process is repeated until the offset duration of each ECG is acquired.
Optionally, the obtaining module 42 is specifically configured to:
for each ECG, the minimum frame rate is multiplied by the IPC number and rounded up to obtain the initial pre-emptive time delay for the ECG.
Optionally, the obtaining module 42 is specifically configured to:
the first ECG initial preemption delay is subtracted by the maximum frame rate to obtain a first preemption delay.
The peak shifting processing apparatus for ECG video data provided in this embodiment may be used in the peak shifting processing method for ECG video data at the CCC side in the above embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
Fig. 5 is a schematic structural diagram of a second embodiment of a peak shifting processing apparatus for ECG video data according to an embodiment of the present application. As shown in fig. 5, the peak shift processing device for ECG video data includes:
an obtaining module 51, configured to obtain video data to be sent;
the sending module 52 is configured to send the video data to the server according to a pre-obtained target preemption delay and an offset duration, where the target preemption delay and the offset duration are obtained by the cloud coordination center CCC according to the minimum frame rate and the number of the internet protocol cameras IPC, the target preemption delay is used to indicate a maximum duration used by the ECG to send the video data, and the offset duration is used to indicate a duration that the ECG needs to wait to send the video data.
In another possible design of the embodiment of the present application, the peak shifting processing apparatus for ECG video data further includes: a receiving module 53;
a sending module 52, configured to send the number of IPCs hanging under ECG and a frame rate range to the CCC, where the frame rate range includes a minimum frame rate and a maximum frame rate;
and a receiving module 53, configured to receive the target pre-occupation time delay and the offset duration sent by the CCC.
The peak shifting processing apparatus for ECG video data provided in this embodiment can be used in the peak shifting processing method for ECG video data on the ECG side in the above embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can all be implemented in the form of software invoked by a processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device may include: a processor 61, a transceiver 62, a memory 63 and computer program instructions stored on the memory 63 and executable on the processor 61, the processor 61 implementing the off-peak processing method of ECG video data provided by any of the foregoing embodiments when executing the computer program instructions.
The transceiver 62 is used for communication with other electronic devices, the transceiver 62 constituting a communication interface.
Optionally, the above devices of the electronic device may be connected by a system bus.
The memory 63 may be a separate memory unit or a memory unit integrated into the processor. The number of processors is one or more.
It should be understood that the Processor 61 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules in the processor.
The system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The memory may comprise Random Access Memory (RAM) and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
All or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The aforementioned program may be stored in a readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disk, and any combination thereof.
The electronic device provided in the embodiment of the present application can be used to execute the peak shifting processing method for ECG video data provided in any of the above method embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
The embodiment of the application provides a computer-readable storage medium, in which computer instructions are stored, and when the computer instructions are run on a computer, the computer is caused to execute the above-mentioned peak shifting processing method for ECG video data.
The computer-readable storage medium may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. A readable storage medium may be any available medium that can be accessed by a general purpose or special purpose computer.
Alternatively, a readable storage medium may be coupled to the processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in the apparatus.
The present application further provides a computer program product, which includes a computer program stored in a computer-readable storage medium, from which the computer program can be read by at least one processor, and the at least one processor can implement the above-mentioned peak shifting processing method for ECG video data when executing the computer program.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (13)
1. A peak load shifting processing method of ECG video data is applied to a cloud coordination center CCC, and the method comprises the following steps:
receiving the number of hanging internet protocol cameras IPC and the frame rate range of each ECG, wherein the number of the hanging internet protocol cameras IPC and the frame rate range comprise a minimum frame rate and a maximum frame rate;
acquiring target pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number, wherein the target pre-occupation time delay is used for indicating the maximum time for sending video data by the ECG;
acquiring the offset duration of each ECG according to the target pre-occupation time delay of the ECG;
and sending the target pre-occupation time delay and the offset time length of each ECG to the ECG, wherein the offset time length is used for indicating the time length of waiting for sending the video data by the ECG.
2. The method of claim 1, wherein obtaining the target pre-emption time delay for each ECG based on the minimum frame rate and the IPC number comprises:
step a, acquiring the initial pre-occupation time delay of each ECG according to the minimum frame rate and the IPC number;
step b, adding the initial pre-occupation time delay of each ECG to obtain the sum of the initial pre-occupation time delays;
step c, if the initial pre-occupation time delay sum is larger than the preset total pre-occupation time delay, calculating a first time delay of each ECG, wherein the first time delay is the ratio of the initial pre-occupation time delay sum to the IPC number;
step d, according to the first time delay and the maximum frame rate, reducing the initial pre-occupation time delay of a first ECG to obtain a first pre-occupation time delay, taking the first pre-occupation time delay as a new initial pre-occupation time delay, wherein the first time delay of the first ECG is greater than the first time delays of other ECGs, and the IPC number of the first ECG is greater than 1;
and e, repeating the steps b to d until the sum of the initial pre-occupation time delay is less than or equal to the preset total pre-occupation time delay, and taking the initial pre-occupation time delay of each ECG as the target pre-occupation time delay.
3. The method of claim 2, further comprising:
and if the sum of the initial pre-occupation time delay is less than or equal to the preset total pre-occupation time delay, taking the initial pre-occupation time delay of each ECG as a target pre-occupation time delay.
4. The method of claim 1, wherein the obtaining the offset durations of the ECGs according to the target preemption latency for each ECG comprises:
selecting an ECG for processing, and setting the offset duration of the ECG to be 0;
selecting another ECG, accumulating the target pre-occupation time delays of the previously processed ECGs to obtain the offset time length of the ECG, and repeating the step until the offset time length of each ECG is obtained.
5. The method of claim 3, wherein the obtaining the initial pre-emptive time delay for each ECG based on the minimum frame rate and the IPC number comprises:
for each ECG, multiplying the minimum frame rate by the IPC number and rounding up to obtain the initial pre-emption time delay for the ECG.
6. The method of claim 2, wherein the narrowing the initial pre-emptive time delay of the first ECG to obtain the first pre-emptive time delay comprises:
subtracting the maximum frame rate from the initial pre-emption time delay of a first ECG to obtain the first pre-emption time delay.
7. A method for peak shifting processing of ECG video data, applied to a multi-edge collaborative gateway ECG, the method comprising:
acquiring video data to be sent;
and sending the video data to a server according to a target pre-acquired preemption delay and an offset time, wherein the target preemption delay and the offset time are acquired by a cloud coordination center CCC according to a minimum frame rate and the number of Internet protocol cameras IPC, the target preemption delay is used for indicating the maximum time used by the ECG for sending the video data, and the offset time is used for indicating the time required by the ECG for sending the video data.
8. The method of claim 7, further comprising:
transmitting the IPC number of the ECG hangs down and a frame rate range to the CCC, the frame rate range including the minimum frame rate and a maximum frame rate;
and receiving the target pre-occupation time delay and the offset duration transmitted by the CCC.
9. An apparatus for peak shifting processing of ECG video data, comprising:
the receiving module is used for receiving the IPC number and the frame rate range of each ECG transmitted by at least two multi-edge collaborative gateways, wherein the frame rate range comprises a minimum frame rate and a maximum frame rate;
an obtaining module, configured to obtain a target preemption delay of each ECG according to the minimum frame rate and the IPC number, where the target preemption delay is used to indicate a maximum duration used by the ECG to send video data;
the acquisition module is further configured to acquire an offset duration of each ECG according to a target preemption delay of the ECG;
and the sending module is used for sending the target pre-occupation time delay and the offset time length of each ECG to the ECG, and the offset time length is used for indicating the time length of waiting for sending the video data by the ECG.
10. An apparatus for peak shifting processing of ECG video data, comprising:
the acquisition module is used for acquiring video data to be transmitted;
the sending module is used for sending the video data to a server according to a pre-obtained target pre-occupation time delay and an offset time length, wherein the target pre-occupation time delay and the offset time length are obtained by a cloud coordination center CCC according to a minimum frame rate and the number of Internet protocol cameras IPC, the target pre-occupation time delay is used for indicating the maximum time length used by the ECG for sending the video data, and the offset time length is used for indicating the time length required by the ECG for sending the video data.
11. An electronic device, comprising: processor, transceiver, memory and computer program instructions stored on the memory and executable on the processor, characterized in that the processor, when executing the computer program instructions, is adapted to implement a method of off-peak processing of ECG video data according to any of claims 1 to 8.
12. A computer-readable storage medium having stored thereon computer-executable instructions for implementing the method of peak shifting processing of ECG video data according to any one of claims 1 to 8 when executed by a processor.
13. A computer program product comprising a computer program for implementing a method of peak shifting processing of ECG video data according to any one of claims 1 to 8 when executed by a processor.
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