CN115988174A - Video gateway system and method with enhanced state perception capability - Google Patents
Video gateway system and method with enhanced state perception capability Download PDFInfo
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- CN115988174A CN115988174A CN202211536281.3A CN202211536281A CN115988174A CN 115988174 A CN115988174 A CN 115988174A CN 202211536281 A CN202211536281 A CN 202211536281A CN 115988174 A CN115988174 A CN 115988174A
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Abstract
The invention relates to a video gateway system with enhanced state perception capability, which comprises an equipment layer, a video gateway layer and a video gateway layer, wherein the equipment layer is used for acquiring non-standard video file resources; the application layer adopts a comprehensive application service platform, standardizes nonstandard video file resources of the equipment layer through a video capability gateway module, and configures corresponding linkage video and alarm signals to be forwarded to the service layer by combining linkage signals of the comprehensive service platform; and the service layer calls the corresponding video of the video capability gateway module to perform alarm grab and alarm video after receiving the alarm signal of the comprehensive application service platform. The invention also discloses a fusion method of the video gateway system with the enhanced state perception capability. The invention is compatible with video monitoring equipment of different mainstream manufacturers, establishes a uniform interface standard, reduces the complexity of audio and video application development, can quickly sense the information such as the online state and the picture quality of the video, and provides technical support for a large-scene operation and maintenance technology.
Description
Technical Field
The invention relates to the technical field of video monitoring, in particular to a video gateway system and a method with enhanced state perception capability.
Background
In recent years, with the continuous development of the video monitoring industry, the type, the number, the definition and the complexity of video monitoring equipment are greatly improved, however, protocol standards, functions and compatibility of different manufacturers are different, so that videos among different monitoring systems cannot be intercommunicated, and resources cannot be shared. The efficiency problem of video application has become a key bottleneck hindering the development of the video monitoring industry, so that the realization of interconnection and intercommunication of monitoring equipment becomes a necessary trend.
At present, companies have a certain technology accumulation for video standardization, such as a streaming media technology, which can meet the requirement of video source access and forwarding of mainstream manufacturers. However, the technology still lacks of a standardized function, can not transcode a non-standard video source into a uniform coding format, has higher difficulty in decoding, playing and application development, lower video image quality, lacks of video state perception means under intelligent analysis application of video resources and operation and maintenance of a large scene, and the like. Meanwhile, the existing streaming media technology also lacks an open interface for resource sharing, which is also a main factor that resource intercommunication cannot be completed between different platforms. Therefore, the standardized networking of a video monitoring system is promoted, a video capability gateway technology for enhancing the state perception capability is researched, a video capability gateway platform integrating core functions of multiple video protocol conversion, high-performance streaming media distribution, multi-channel video decoding, video state fast perception and the like is built, a unified interface standard is established, the quality of video monitoring is improved, the video state perception capability is enhanced, multi-platform resource sharing is realized, and the problem to be solved urgently is solved.
Disclosure of Invention
The invention aims to provide a video gateway system with enhanced state sensing capability, which establishes a unified interface standard, improves the video monitoring quality, enhances the video state sensing capability and realizes multi-platform monitoring data sharing.
In order to realize the purpose, the invention adopts the following technical scheme: a video gateway system with enhanced state awareness includes
The device layer is used for acquiring non-standard video file resources, transmitting the non-standard video file resources to the video capability gateway module of the application layer, standardizing the video capability gateway module and calling the video capability gateway module by the service layer;
the application layer adopts a comprehensive application service platform, a video capability gateway module is arranged in the comprehensive application service platform, and the comprehensive application service platform standardizes the nonstandard video file resources of the equipment layer through the video capability gateway module, and then configures corresponding linkage video and alarm signals to be transmitted to the service layer by combining the linkage signals of the comprehensive service platform;
and the business layer calls corresponding videos of the video capability gateway module to perform alarm grab and alarm video after receiving the alarm signal of the comprehensive application service platform, provides a structured video file and improves the analysis efficiency.
The equipment layer comprises a panoramic camera, a high-definition camera, an AI camera, a robot and an unmanned aerial vehicle.
The video capability gateway module comprises:
the audio and video coding and decoding module adopts a coding and decoding method of video coding standard H.266/VVC;
the streaming data transmission module develops a low-delay multi-protocol streaming media adaptation technology based on real-time transport protocols RTSP, RTMP and HTTP, realizes self-adaptive identification and processing of a video transmission protocol, respectively establishes data links with an application end and a video source end, quickly completes conversion of video data and a signaling data packaging format, reduces picture and control delay, achieves the aim of standardized output, and meets different requirements of Web plug-in-free video playing and access of a third-party platform;
the video state perception module adopts methods of video online state detection, video transmission integrity detection and video picture quality evaluation to enhance the ability of a user to perceive the video state.
The comprehensive application service platform comprises a video capability gateway module, a linkage signal configuration module and a message forwarding module.
The service layer comprises:
the online inspection module is used for remotely inspecting each region of the transformer substation online through the equipment layer and checking the field condition of the transformer substation in real time;
the power transmission panoramic module realizes remote video online monitoring and intelligent analysis of external force damage on the power transmission line through video monitoring and artificial intelligence technology, and realizes all-weather real-time monitoring and early warning on the power transmission line;
the one-key sequence control module replaces manual field control by remote automatic control of an application layer, so that the comprehensive improvement of the operation efficiency is facilitated, and the operation risk is reduced;
the video analysis module realizes the omnibearing detection of the transformer substation equipment, personnel, regions, activity targets and abnormal conditions through intelligent analysis, realizes the conversion of video search from manual search to intelligent retrieval, and reduces the labor cost;
and the service layer is displayed on a web page end of the PC.
The streaming data transmission module includes:
the preprocessing module is used for reading a local configuration file, initializing a real-time data transmission service and waiting for video signal input;
the signaling management module is used for identifying the transmission protocols of the equipment layer and the application layer, establishing protocol link, analyzing and converting a command message issued by the application layer, sending the converted command message to the equipment layer, and simultaneously replying the application layer to finish response;
the thread management module is responsible for the management of CPU resources and provides thread management and scheduling functions, and when threads are needed, the thread management module allocates the threads to the idle threads from the idle threads, so that the running efficiency of the program is improved;
the stream analysis module is used for verifying the response data packets after the task starts, distributing specific data packets according to a corresponding sequence to form corresponding request data packets, and analyzing and repackaging RTSP, RTMP and HTTP video streams;
and the local management module is used for managing data needing to be written into the local disk in the memory, including log reading and writing, media data reading and writing, classified storage and cache management.
Another object of the present invention is to provide a method for fusing a video gateway system with enhanced state awareness, the method comprising the following sequential steps:
(1) The equipment layer collects original video information through different cameras;
(2) The integrated service platform in the application layer adopts an H.266/VVC coding and decoding method to carry out standardized processing on the video information of the equipment layer;
(3) And the service layer calls the video information processed by the application layer for different services.
In step (2), the h.266/VVC encoding and decoding method specifically includes the following steps:
(2a) Dividing each frame of image of the video signal into coding units with different sizes;
(2b) After intra-frame measurement or inter-frame prediction is carried out on each coding unit, the coding unit is subtracted from the original video information to obtain residual error information;
(2c) Transforming and quantizing the residual error information to obtain a quantized transform coefficient, and entropy coding the quantized transform coefficient to transmit the quantized transform coefficient to a bit stream;
(2d) The coding end carries out inverse quantization and inverse transformation on the quantized transformation coefficient, and then adds the obtained residual error with the output of the prediction module to output video information;
(2e) And inputting the output video information into an intra-frame prediction module, simultaneously performing loop filtering to improve the quality of a reconstructed frame, inputting the reconstructed frame buffer information obtained after filtering into an inter-frame prediction module, and simultaneously outputting a video signal.
According to the technical scheme, the beneficial effects of the invention are as follows: firstly, video monitoring equipment of different mainstream manufacturers is compatible, a uniform interface standard is established, and the problem of multi-platform monitoring data sharing is solved; secondly, the video capability gateway platform decouples video analysis, video big data and other intelligent applications from video data acquisition, so that the complexity of audio and video application development is reduced; and thirdly, the video monitoring quality is improved, the video state perception capability is enhanced, the information such as the video online state and the picture quality can be rapidly perceived, and the technical support is provided for the large-scene operation and maintenance technology.
Drawings
FIG. 1 is a system architecture diagram of the present invention;
FIG. 2 is a schematic diagram of an H.266/VVC encoding frame of an audio/video encoding/decoding module according to the present invention;
fig. 3 is a block diagram of a streaming data transmission module according to the present invention;
FIG. 4 is a flowchart illustrating a method for measuring distortion of a video frame according to the present invention.
Detailed Description
As shown in FIG. 1, a video gateway system with enhanced state awareness includes
The device layer is used for acquiring non-standard video file resources, transmitting the non-standard video file resources to the video capability gateway module of the application layer, standardizing the non-standard video file resources and calling the standardized video file resources by the service layer;
the application layer adopts a comprehensive application service platform, a video capability gateway module is arranged in the comprehensive application service platform, and the comprehensive application service platform standardizes the nonstandard video file resources of the equipment layer through the video capability gateway module, and then configures corresponding linkage video and alarm signals to be transmitted to the service layer by combining the linkage signals of the comprehensive service platform;
and the business layer calls corresponding videos of the video capability gateway module to perform alarm grab and alarm video after receiving the alarm signal of the comprehensive application service platform, provides a structured video file and improves the analysis efficiency.
The equipment layer comprises a panoramic camera, a high-definition camera, an AI camera, a robot and an unmanned aerial vehicle.
The video capability gateway module comprises:
the audio and video coding and decoding module adopts a coding and decoding method of a video coding standard H.266/VVC, the compression efficiency of the coding and decoding method of the H.266/VVC is improved by nearly one time compared with that of H.265/HEVC, the standard can save 50% of video code rate under the condition that the definition is kept unchanged, and the transmission capability and the video code rate of a video gateway platform can be obviously improved.
The streaming data transmission module develops a low-delay multi-protocol streaming media adaptation technology based on real-time transport protocols RTSP, RTMP and HTTP, realizes self-adaptive identification and processing of a video transmission protocol, respectively establishes data links with an application end and a video source end, quickly completes conversion of video data and a signaling data packaging format, reduces picture and control delay, achieves the aim of standardized output, and meets different requirements of Web plug-in-free video playing and access of a third-party platform;
the video state perception module adopts the methods of video online state detection, video transmission integrity detection and video picture quality evaluation, improves the speed and the accuracy of the algorithm, establishes a three-in-one video inspection system and enhances the ability of a user to perceive the video state.
The comprehensive application service platform comprises a video capability gateway module, a linkage signal configuration module and a message forwarding module.
The service layer comprises:
the online inspection module is used for remotely inspecting each region of the transformer substation online through the equipment layer and checking the field condition of the transformer substation in real time;
the power transmission panoramic module realizes remote video online monitoring and intelligent analysis of external force damage on the power transmission line through video monitoring and artificial intelligence technology, and realizes all-weather real-time monitoring and early warning on the power transmission line;
the one-key sequence control module replaces manual field control by remote automatic control of an application layer, so that the comprehensive improvement of the operation efficiency is facilitated, and the operation risk is reduced;
the video analysis module realizes the omnibearing detection of the transformer substation equipment, personnel, regions, activity targets and abnormal conditions through intelligent analysis, realizes the conversion of video search from manual search to intelligent retrieval, and reduces the labor cost;
and the service layer is displayed on a web page end of the PC.
As shown in fig. 3, the streaming data transmission module includes:
the preprocessing module is used for reading a local configuration file, initializing a real-time data transmission service and waiting for video signal input;
the signaling management module is used for identifying the transmission protocols of the equipment layer and the application layer, establishing protocol link, analyzing and converting a command message issued by the application layer, sending the converted command message to the equipment layer, and simultaneously replying the application layer to finish response;
the thread management module is responsible for the management of CPU resources and provides thread management and scheduling functions, and when threads are needed, the thread management module allocates the threads to the idle threads from the idle threads, so that the running efficiency of the program is improved;
the stream analysis module is used for verifying the response data packets after the task starts, distributing specific data packets according to a corresponding sequence to form corresponding request data packets, and analyzing and repackaging RTSP, RTMP and HTTP video streams;
and the local management module is used for managing data needing to be written into the local disk in the memory, including log reading and writing, media data reading and writing, classified storage and cache management.
The invention also discloses a fusion method of the video gateway system with the enhanced state perception capability, which comprises the following steps in sequence:
(1) The device layer collects original video information through different cameras;
(2) The integrated service platform in the application layer adopts an H.266/VVC coding and decoding method to carry out standardized processing on the video information of the equipment layer;
(3) And the service layer calls the video information processed by the application layer for different services.
As shown in fig. 2, in step (2), the h.266/VVC encoding and decoding method specifically includes the following steps:
(2a) Dividing each frame of image of the video signal into coding units with different sizes;
(2b) After intra-frame measurement or inter-frame prediction is carried out on each coding unit, the coding unit is subtracted from the original video information to obtain residual error information;
(2c) Transforming and quantizing the residual error information to obtain a quantized transform coefficient, and entropy coding the quantized transform coefficient to transmit the quantized transform coefficient to a bit stream;
(2d) The coding end carries out inverse quantization and inverse transformation on the quantized transformation coefficient, and then adds the obtained residual error with the output of the prediction module to output video information;
(2e) And inputting the output video information into an intra-frame prediction module, simultaneously performing loop filtering to improve the quality of a reconstructed frame, inputting the reconstructed frame buffer information obtained after filtering into an inter-frame prediction module, and simultaneously outputting a video signal.
The present invention will be further described with reference to fig. 1 to 4.
As shown in fig. 3, an audio-video real-time transport protocol conversion technique is adopted, and the real-time transport protocol is essentially a streaming transport, and a file to be transmitted is decomposed into a plurality of sequential data packets and transmitted to a client through a network. The connection establishing process is different for different audio and video real-time transmission protocols, and the command for establishing the connection is also different.
As shown in fig. 4, various types of video picture distortion change the size and spatial distribution of the original video pixel values to some extent. Locally, the overall picture quality degradation of the video is to change the fine texture distribution structure. If the amount of variation in the subtexture can be measured, the variation of the whole video can be measured. Based on the assumption, the large scene operation and maintenance technology based on video state perception introduces a filter and a local binary pattern to measure the distortion degree of a video picture: firstly, decomposing each frame of a distorted video into sub-bands with three different scales and four different directions through a filter; secondly, dividing each sub-band into blocks with different sizes; thirdly, calculating a local binary pattern statistical histogram of each block in the unified mode; and fourthly, measuring the difference between the corresponding blocks of the reference video and the original video by using a histogram difference formula.
The invention meets the requirement that after non-standard equipment is accessed into a video gateway system through a uniform interface, the system can transcode the non-standard equipment into a standard code stream format of H.264/AVC or H.266/VVC, and after encryption, the non-standard equipment is sent to a third party platform through standard video transmission protocols such as RTSP, RTMP, HTTP, GB28181, B interface and the like. At this time, the video monitoring systems of the other access platforms can freely call and read and operate the non-standard device through the interface provided by the video gateway system without developing other docking protocols.
Similarly, after the nonstandard platform is accessed to the video gateway system, the video resources of the nonstandard platform are uploaded to the gateway platform through the unified interface of the video gateway system, then the video resources are transcoded and standardized by the platform, and the other video monitoring systems can call the video resources of the video gateway system through the interface of the video gateway system without being directly connected with the monitoring system in an abutting mode, so that a solution is provided for monitoring data sharing of multiple platforms.
In conclusion, the invention is compatible with video monitoring equipment of different mainstream manufacturers, establishes a uniform interface standard and solves the problem of multi-platform monitoring data sharing; the video capability gateway platform decouples video analysis, video big data and other intelligent applications from video data acquisition, and reduces the complexity of audio and video application development; the video monitoring quality is improved, the video state perception capability is enhanced, the information such as the video online state and the picture quality can be rapidly perceived, and the technical support is provided for the large-scene operation and maintenance technology.
Claims (8)
1. A video gateway system with enhanced state awareness, comprising: comprises that
The device layer is used for acquiring non-standard video file resources, transmitting the non-standard video file resources to the video capability gateway module of the application layer, standardizing the video capability gateway module and calling the video capability gateway module by the service layer;
the application layer adopts a comprehensive application service platform, a video capability gateway module is arranged in the comprehensive application service platform, and the comprehensive application service platform standardizes the nonstandard video file resources of the equipment layer through the video capability gateway module, and then configures corresponding linkage video and alarm signals to be transmitted to the service layer by combining the linkage signals of the comprehensive service platform;
and the business layer calls corresponding videos of the video capability gateway module to perform alarm grab and alarm video after receiving the alarm signal of the comprehensive application service platform, provides a structured video file and improves the analysis efficiency.
2. The video gateway system with enhanced state awareness capability of claim 1, wherein: the equipment layer comprises a panoramic camera, a high-definition camera, an AI camera, a robot and an unmanned aerial vehicle.
3. The video gateway system with enhanced state awareness capability of claim 1, wherein: the video capability gateway module comprises:
the audio and video coding and decoding module adopts a coding and decoding method of video coding standard H.266/VVC;
the streaming data transmission module develops a low-delay multi-protocol streaming media adaptation technology based on real-time transport protocols RTSP, RTMP and HTTP, realizes self-adaptive identification and processing of a video transmission protocol, respectively establishes data links with an application end and a video source end, quickly completes conversion of video data and a signaling data packaging format, reduces picture and control delay, achieves the aim of standardized output, and meets different requirements of Web plug-in-free video playing and access of a third-party platform;
the video state perception module adopts methods of video online state detection, video transmission integrity detection and video picture quality evaluation to enhance the ability of a user to perceive the video state.
4. The video gateway system with enhanced state awareness capability of claim 1, wherein: the comprehensive application service platform comprises a video capability gateway module, a linkage signal configuration module and a message forwarding module.
5. The video gateway system with enhanced state awareness capability of claim 1, wherein: the service layer comprises:
the online patrol module is used for remotely and online patrolling each region of the transformer substation through the equipment layer and checking the field condition of the transformer substation in real time;
the power transmission panoramic module realizes remote video online monitoring and intelligent analysis of external force damage on the power transmission line through video monitoring and artificial intelligence technology, and realizes all-weather real-time monitoring and early warning on the power transmission line;
the one-key sequence control module replaces manual field control by remote automatic control of an application layer, so that the comprehensive improvement of the operation efficiency is facilitated, and the operation risk is reduced;
the video analysis module realizes the omnibearing detection of substation equipment, personnel, regions, activity targets and abnormal conditions through intelligent analysis, realizes the conversion of video search from manual search to intelligent search, and reduces the labor cost;
and the service layer is displayed on a web page end of the PC.
6. The video gateway system with enhanced state awareness capability of claim 3, wherein: the streaming data transmission module includes:
the preprocessing module is used for reading a local configuration file, initializing a real-time data transmission service and waiting for video signal input;
the signaling management module is used for identifying the transmission protocols of the equipment layer and the application layer, establishing protocol link, analyzing and converting a command message issued by the application layer, sending the converted command message to the equipment layer, and simultaneously replying the application layer to finish response;
the thread management module is responsible for managing CPU resources and providing thread management and scheduling functions, and when threads are needed, the thread management module distributes the threads from idle threads, so that the running efficiency of the program is improved;
the stream analysis module is used for verifying the response data packets after the task starts, distributing specific data packets according to a corresponding sequence to form corresponding request data packets, and analyzing and repackaging RTSP, RTMP and HTTP video streams;
and the local management module is used for managing data needing to be written into the local disk in the memory, including log reading and writing, media data reading and writing, classified storage and cache management.
7. The convergence method of a video gateway system with enhanced state awareness according to one of the claims 1 to 6 wherein: the method comprises the following steps in sequence:
(1) The device layer collects original video information through different cameras;
(2) The integrated service platform in the application layer adopts an H.266/VVC coding and decoding method to carry out standardized processing on the video information of the equipment layer;
(3) And the service layer calls the video information processed by the application layer for different services.
8. The method of claim 7, wherein: in step (2), the h.266/VVC encoding and decoding method specifically includes the following steps:
(2a) Dividing each frame of image of the video signal into coding units with different sizes;
(2b) After intra-frame measurement or inter-frame prediction is carried out on each coding unit, the coding unit is subtracted from the original video information to obtain residual error information;
(2c) Transforming and quantizing the residual error information to obtain a quantized transform coefficient, and entropy coding the quantized transform coefficient to transmit the quantized transform coefficient to a bit stream;
(2d) The coding end carries out inverse quantization and inverse transformation on the quantized transformation coefficient, and then adds the obtained residual error with the output of the prediction module to output video information;
(2e) And inputting the output video information into an intra-frame prediction module, simultaneously performing loop filtering to improve the quality of a reconstructed frame, inputting the reconstructed frame buffer information obtained after filtering into an inter-frame prediction module, and simultaneously outputting a video signal.
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