660 results about "Video transmission" patented technology

The invention relates to a method for dynamically adjusting parameters of a video encoder, which comprises the following steps of: acquiring a visual characteristic index corresponding to a video frame image in real time, and calculating an image complexity score of the image according to the visual characteristic index; the visual feature indexes comprise motion intensity, edge density and information entropy; acquiring a network index of a video transmission network in real time; the network indexes comprise available bandwidth, delay, jitter and packet loss rate; obtaining a current encoder control parameter according to the current image complexity score and the network index; the control parameters of the encoder comprise GOP, GP, FPS and Buffer Size; and adjusting the encoder according to the obtained control parameters of the encoder. The method is superior to an existing fixed parameter coding system in the aspects of image quality, delay control, system robustness and adaptability.

The invention particularly relates to a mobile camera management system capable of adaptively adjusting video coding quality. According to the mobile camera management system capable of adaptively adjusting the video coding quality, a network condition monitoring and predicting module is used for monitoring the current network bandwidth and packet loss rate in real time and predicting the network state; the video coding control module is used for dynamically adjusting video coding parameters according to the current network bandwidth and the ROI; and the adaptive adjustment strategy module is responsible for issuing a video coding strategy to the video coding control module according to the data fed back by the network state monitoring and prediction module so as to realize dynamic adjustment of the video coding quality. The mobile camera management system capable of adaptively adjusting the video coding quality can avoid video lagging and frame loss when the network bandwidth is relatively low, is suitable for various mobile devices such as a vehicle-mounted device, an unmanned aerial vehicle and a wearable camera, effectively improves the continuity and availability of video transmission, and realizes stable application in an environment with unstable signals.

The invention relates to the technical field of wireless streaming media, in particular to a real-time video transmission method and system based on 5G, and the method comprises the following steps: based on mobile terminal equipment, analyzing the signal strength and service bearing change of a 5G base station, screening an optimal access sequence, comparing channel capability with video partition characteristics, and adjusting coding parameter distribution. And analyzing link capability and packet loss performance, and optimizing uplink and downlink compression parameters to obtain a compression change trend. According to the invention, by dynamically identifying the signal association and network load change between the mobile terminal and the 5G base station, the multi-dimensional access priority sequence is generated in combination with the real-time bandwidth demand, the coding and allocation parameters are flexibly adjusted according to the video partition content characteristics and the wireless channel adaptation condition, and the access priority sequence is optimized in combination with the uplink and downlink performance and the frame type change. Dynamic regulation and control and synchronous updating of compression parameters are automatically completed, continuous transmission of video streams in a complex network environment is achieved, and the end-to-end consistency of video content and the integrity of picture data are improved.

The invention discloses a video transmission image stitching data enhancement method based on deep learning, and relates to the field of video image processing. The method comprises the following steps: S1, acquiring and screening images; s2, continuously screening structures and selecting key frames; s3, correcting image distortion; s4, splicing and fusing the images; s5, performing image enhancement output; firstly, a sliding time window mechanism is adopted, multi-dimensional image quality screening is combined, fuzzy, underexposure or severely-shielded inferior frames are accurately removed, and high quality of input key frames is ensured; through intelligent splicing and enhancement of a dynamic adaptive threshold strategy and semantic guidance, the image splicing precision and efficiency of the unmanned aerial vehicle and the multi-view camera in a complex environment are remarkably improved; besides, semantic segmentation guided feature extraction is combined with a multi-band fusion technology, seamless splicing is realized, the quality of an output image is improved, and the reliability of automatic analysis and decision making is remarkably improved.

The invention relates to the technical field of audio and video transmission, in particular to an internal and external network audio and video secure transmission method and system based on a cloud platform. By combining the load balancing technology with the real-time load state and the audio and video stream characteristics of the cloud platform, the encrypted traffic can be dynamically distributed to a plurality of back-end servers, and the calculation overhead in the encryption process can be effectively reduced through selection of the lightweight asymmetric encryption algorithm and the optimized key exchange process; in a handshake stage, by optimizing a key negotiation process and adjusting a key exchange process according to segmentation characteristics, the execution efficiency of a protocol is further improved, and by dynamically adjusting the execution opportunity of encryption operation, it is ensured that the encryption operation is executed at a proper opportunity, and the encryption efficiency is improved. By monitoring and adjusting the load distribution strategy and the encryption parameters in real time, the system operation mode can be dynamically adjusted according to the distortion degree and the transmission state of the audio and video streams, and the distortion degree of the audio and video streams is effectively reduced.

The invention discloses a high-resolution and low-delay audio and video transmission method and system, which realize high-quality and low-delay remote audio and video transmission by dynamically negotiating transmission resolution and self-adaptive compression coding. The method comprises the following steps: constructing a resolution negotiation matrix through extended display identification data based on receiving end equipment, and determining an optimal transmission resolution parameter; the compression ratio is dynamically adjusted in combination with network bandwidth fluctuation, a compressed data stream is generated by adopting inter-frame prediction coding, and the anti-interference capability is enhanced through forward error correction and time division multiplexing packaging; and finally, the differential signal pair is transmitted to a receiving end to be decoded and restored into a standard audio and video signal. According to the method, the transmission delay is remarkably reduced while the high-resolution image quality is ensured, the method effectively adapts to a complex network environment, the transmission distance and stability are considered, and the method is suitable for application scenes such as remote conferences and real-time monitoring which have high real-time requirements.

The invention discloses a petroleum drilling machine equipment intelligent alarm method based on video real-time display, and belongs to the technical field of petroleum exploitation equipment monitoring, and the method comprises the steps: obtaining the operation video of a key part of petroleum drilling machine equipment, and transmitting the operation video of the key part to a monitoring center; in the monitoring center, preprocessing the operation video of the key part to eliminate the influence of illumination disturbance, and carrying out key part identification and behavior analysis on the preprocessed operation video of the key part by using an equipment part detection and behavior analysis algorithm based on deep learning to obtain a detection result of the key part; and based on the detection result of the key part, the display alarm and the sound-light alarm of the abnormal type and the occurrence position are triggered in real time, and the alarm information is sent to the handheld terminal of the driller. According to the method, intelligent fault detection and alarm are realized, manual intervention is reduced, the comprehensiveness of equipment monitoring is improved, and the accuracy and timeliness of alarm are improved.

The invention provides a video coding and compression transmission method for intelligent equipment, which belongs to the technical field of video coding and compression transmission, realizes advanced channel quality estimation by establishing a channel prediction model enhanced by a spatial transformation network, configures layered coding parameters according to a prediction result and optimizes motion search in combination with inertial measurement unit data. An optimal coding mode is selected by an application rate distortion optimization algorithm, enhancement layer sending is adjusted according to real-time feedback by adopting a dynamic transmission scheduling strategy, and differential forward error correction protection and a time-space domain error concealment mechanism are matched; the technical problem that video transmission is unstable due to violent fluctuation of channel quality when intelligent equipment moves and works in complex electromagnetic environments such as a transformer substation is solved.

The invention provides a Max plug-in assisted video data transmission method and system, and relates to the technical field of video transmission optimizing.The method comprises the steps that a monitoring video stream is analyzed through a Max plug-in, and video content information containing a plurality of semantic areas, associated position identifiers and importance parameters is obtained; generating multiple paths of coding code streams by using different coding strategies according to the importance parameters, and obtaining a composite code stream through bit field non-orthogonal multiplexing; transmission resources and coding parameters are dynamically adjusted in combination with real-time network states and importance parameters during transmission; and a receiving end decodes and recovers the video data through sequential interference elimination, and finally, the Max plug-in drives the digital twinning scene to realize differentiated three-dimensional rendering presentation according to the recovered data and the associated position identifier and importance parameter, so that efficient transmission of the monitoring video data and differentiated three-dimensional rendering presentation of the digital twinning scene can be realized.

The invention provides an end-network cooperative transmission system and method for a multi-mode network. The system comprises a terminal service demand layer which is used for identifying the service type of a terminal in a multi-mode network, generating structured service demand information and transmitting the service demand information to a network collaborative decision-making layer; the network cooperation decision-making layer is used for fusing the service demand information and the link state information, generating a transmission optimization strategy including path selection, priority mapping, bandwidth allocation and rate control, and transmitting the transmission optimization strategy to the transmission optimization strategy execution layer; and the transmission optimization strategy execution layer is used for executing a transmission optimization strategy, collecting link state information in the multi-mode network in real time through INT, and transmitting the link state information to the network cooperation decision layer. According to the method, efficient scheduling of heterogeneous network resources and high-reliability transmission guarantee of differentiated services are achieved, and the method is suitable for key service scenes sensitive to time delay and reliability, such as Internet of Vehicles and ultra-high-definition video transmission.

The invention relates to a video transmission method and device, equipment, a storage medium and a program product. The method comprises the following steps: under the condition that the network quality of a wireless network accessed by video sending equipment is smaller than a quality threshold value, acquiring channel state information of a wireless signal transmitted between the video sending equipment and video receiving equipment according to a preset sampling frequency; determining a current scene of the video sending device according to the information similarity between different channel state information; sending video data to video receiving equipment by adopting a video data sending scheme matched with the current scene; the video data sending scheme comprises a scheme for sending the video data based on the video picture change data, or a scheme for sending the video data by adjusting the sending number of B frames in a basic picture group GOP. According to the method, the video data is sent based on the video picture change data and the adjustment of the B frame sending quantity, so that the video transmission data quantity can be reduced, and the definition and fluency of the video are considered.

The application provides a wireless broadcast service message enhanced transmission method, which comprises the following steps: S1, connecting a broadcast service server and at least one first broadcast service client to a switch network subsystem in wired communication; the switch network subsystem is in communication connection with a Wi-Fi subsystem; the Wi-Fi subsystem is in wireless communication connection with at least one second broadcast service client; S2, presetting the Wi-Fi subsystem; S3, when a broadcast service client is interested in a video, a user feeds back an IP address of the broadcast service client which needs to receive the video; S4, performing legality check on the minimum transmission rate of the at least one first broadcast service client and / or the at least one second broadcast service client; and S5, transmitting by the Wi-Fi subsystem according to the parameters preset in step S2. According to the requirements of different service clients, different processing procedures can be executed correspondingly, so that the requirements of real-time video transmission can be met.

The invention discloses an unmanned aerial vehicle insulator zero-value acousto-optic detection method and an unmanned aerial vehicle insulator zero-value acousto-optic detection device, relates to the technical field of insulator detection, and solves the problems of poor detection safety, low efficiency and insufficient precision in the prior art. Establishing a coordinate system to generate flight control parameters to realize precise hovering; based on the distance vector, the rotatable multi-frequency coil group generates a spatial modulation electromagnetic field; the high-voltage testing device applies a cooperative modulation detection voltage according to electromagnetic field parameters to realize synchronous modulation of the two; the audio-video transmission device collects sound and light signals, and features are obtained through space-time fusion after distance attenuation compensation; constructing an evaluation model containing environment correction, and judging a zero value by taking 0.8 as a threshold value; according to the method, closed-loop detection is formed, the detection precision and efficiency are improved, and operation safety is guaranteed.

Provided in the embodiments of the present disclosure is a video transmission device. In the video transmission device, a video transceiving unit has two functions of receiving a video and sending a video, and a wireless communication unit can implement transceiving of video data in a wireless manner, such that the video transmission device can be multipurpose, i.e., the video transmission device can be used as both a wireless video-transmission transmitting device and a wireless video-transmission receiving device, so as to adapt to different scenarios. In addition, the video transmission device can further be integrated with a display unit, allowing the video transmission device to function as a monitor regardless of whether same is used as the transmitting device or the receiving device, thereby facilitating a user in watching, anytime and anywhere, a video that is sent or received by the video transmission device, which is highly flexible and convenient.

The invention discloses an immersive video perception transmission method based on implicit integrated viewport prediction and representation learning code rate decision, and relates to the technical field of immersive video transmission and intelligent content perception coding optimization. In order to solve the problems of insufficient viewport prediction generalization, non-adaptive user preference modeling and poor stability under network disturbance in the prior art, the invention provides a method for establishing an implicit integrated viewport prediction model of a multi-input-output structure by collecting user head motion trail and view field thermodynamic diagram data; constructing a code rate decision engine of mutual information constraint by combining representation learning and reinforcement learning, and realizing tile-level dynamic code rate allocation according to a prediction result and user preference; introducing an adversarial training mechanism of bandwidth jitter and packet loss disturbance to enhance robustness; and end-to-end adaptive optimization is realized by adopting cloud, edge and terminal collaborative deployment. The method is suitable for a high-bandwidth and low-delay scene, the definition of a core visual area can be guaranteed, meanwhile, the bandwidth is remarkably saved, and the user experience continuity is improved.

The invention provides an image processing method and device and electronic equipment. The method comprises the following steps: obtaining a to-be-transmitted generative video at a sending end, wherein the generative video is generated by a machine; extracting one or more semantic features of the generative video, wherein the one or more semantic features can describe the content of the generative video; mapping the one or more semantic features into a semantic lexical element stream; compressing the semantic lexical element flow to generate a compressed semantic lexical element flow; the compressed semantic lexical element stream is transmitted to a receiving end at the sending end; and inputting the compressed semantic lexical element stream to a video generation model at a receiving end to restore a generative video. Therefore, the generation type video is expressed as the low-dimensional semantic lexical element flow at the sending end for transmission, and the generation type video is recovered based on the semantic lexical element flow at the decoding end, so that generation type video transmission with low code rate and high visual quality is realized.

A transmitter includes a distributor that receives a stream of digital video samples and distributes the digital video samples into vectors in a buffer per a permutation. A digital-to-analog converter (DAC) per vector receives from its corresponding vector the digital video samples and converts the digital video samples into analog video samples. Each source driver includes a collector that receives analog video samples from each DAC and stores the analog video samples of the corresponding vector, and amplifiers that receive the stored analog video samples in parallel from the collector and amplifies the stored analog video samples onto a column of the display panel. Synchronization uses modified MFM and sample phase alignment. The source drivers are integrated with the substrate of the display panel using transistors. An AR / VR headset uses analog video transport between processor and visor and transmits and receives wirelessly.

The invention relates to the technical field of audio and video synchronization, in particular to a video call real-time audio and video synchronous monitoring system which comprises a frame time extraction module, a main time sequence locking module, a delay structure analysis module, a synchronous node generation module and a synchronous control instruction module. According to the invention, through real-time extraction and analysis of timestamp difference calculation of audio and video frames and establishment of a transmission delay interval comparison sequence, the time difference in audio and video transmission can be effectively identified, the monitoring accuracy of an audio and video asynchronization phenomenon is enhanced, and through real-time adjustment of timestamp offset, the synchronization accuracy of the audio and video in a playing process is ensured; in a dynamic network environment, the offset rate is monitored and adjusted in real time, the continuity and fluency of interactive experience are ensured, the synchronization state of the audio and video frames can be controlled more accurately by analyzing the offset difference value centralized distribution section and marking the synchronization fluctuation section, and the situation that the large-scale user experience is reduced due to synchronization error accumulation is avoided.

The invention relates to a video transmission system using space-time dual importance, which belongs to the field of image transmission, and comprises a sending end: coding a video frame into a continuous semantic feature map through a feature extractor, then discretizing the continuous semantic feature map into a mark map through quantization, and dividing the mark map into a plurality of independent data packets, meanwhile, the importance weight of each data packet is calculated through a dual space-time importance modeling module; the physical layer is used for realizing a resource scheduling strategy based on semantic importance through three links of data packet admission, channel-semantic matching and power allocation; and the receiving end is used for carrying out reverse recombination of semantic features and generative reconstruction of video contents on the received data packet after channel decoding. According to the method, spatial significance and time innovation of video content are explicitly modeled, the semantic value of each data packet is quantified, allocation and protection of wireless resources are guided accordingly, and while reliable transmission of key semantic information is guaranteed, dual optimization facing machine tasks and human vision is achieved.

Disclosed is a multi-modal communication system for unmanned aerial vehicles (UAVs) that integrates multiple wireless interfaces, such as point-to-point (P2P) wireless links and cellular links, to ensure seamless connectivity during flight. The system dynamically selects between wireless interfaces based on known, predicted or real-time link quality, plans a flight path based on a connectivity map and adapts flight paths in real-time. The system adapts to changing link quality. Adaptive responses include modifying a flight path, backtracking to a last known location with satisfactory signal coverage, RF channel switching in P2P link, and suspending video transmission while maintaining control links. A machine learning model predicts link conditions based on environmental conditions and historical data. The system may also leverage remote access points with Ethernet or satellite backhaul to extend coverage. These features provide resilient, autonomous communication for UAV operations in variable RF environments, improving reliability over traditional fixed-path, single-link systems.

The invention relates to the technical field of subway security and protection monitoring and video transmission, in particular to a subway security and protection monitoring video quick calling and multi-channel transmission optimization system, which comprises an analysis module used for extracting a feature set of multi-source heterogeneous metadata in a subway station and carrying out matching calculation on the feature set and an abnormal event template to obtain a matching confidence coefficient; if the matching confidence exceeds a preset threshold, judging that an abnormal event occurs and outputting an event feature identifier; determining an influence range and an association path of the event by combining space and scene information in the metadata according to the event feature identifier; and based on the influence range and the association path, obtaining a target equipment calling list containing the equipment identifier, the space-time weight and the initial priority. Intelligent sensing is realized through multi-source data fusion, dynamic resource allocation is realized through scheduling and channelization, and stable delivery of streaming media is guaranteed through adaptive coding and reliable transmission, so that the emergency response capability of a subway security monitoring system is comprehensively improved.

The invention provides a media post-processing method and device, equipment and a storage medium, and relates to the field of audio and video transmission, and the method comprises the steps: obtaining a first data packet transmitted by an equipment end through employing a first transmission protocol, and carrying out the repackaging of the first data packet based on an initial load parameter, and obtaining a second data packet; converting the first format of the second data packet into a second format based on a protocol adaptation agent to obtain a third data packet; based on a first algorithm, sending the third data packet to the device end by using a second transmission protocol; monitoring data and a dotting data packet of the equipment end are acquired, load optimization is performed based on the second data packet, the monitoring data and the dotting data packet, dynamic load parameters are generated, and the initial load parameters are replaced by the dynamic load parameters.

The invention provides a video transmission optimization method and system based on the capability of display equipment. The method comprises the following steps: identifying a maximum display parameter of a display device currently connected with the terminal; obtaining the maximum decoding capability of the terminal according to the maximum display parameter of the display device and the decoding capability of the terminal; and when the terminal and the remote end carry out video conference calling, the two parties determine a video receiving format according to the maximum decoding capability, the coding capability of the remote end and the network bandwidth in a connection establishment process. According to the video transmission optimization method and system based on the display equipment capability, a more accurate and flexible video transmission scheme can be provided by considering the actual capability of the display equipment, and the overall performance and user experience of a video conference are remarkably improved.

The invention discloses a high-definition video low-delay compression method based on self-adaptive adjustment, and aims to solve the problems of insufficient self-adaptive adjustment capability, too high encoding and decoding delay and low code rate and network bandwidth matching degree in the existing high-definition video compression technology. The method comprises the following steps: firstly, acquiring a high-definition video stream and a real-time network bandwidth parameter, extracting intra-frame texture complexity, inter-frame motion intensity and scene switching frequency characteristics, and constructing a two-dimensional adaptive compression strategy in combination with a real-time bandwidth; low-delay coding is executed by adopting parallel frame fragmentation and simplified adaptive arithmetic coding, adaptive code rate control is realized by combining code rate overflow early warning and intra-frame key region priority bit allocation, and finally, fast inverse transformation, quantization recovery and motion compensation optimization are completed at a decoding end based on strategy parameters synchronously transmitted at a coding end so as to reconstruct a high-definition video frame. According to the invention, the adaptive adjustment capability of video compression is improved, low time delay of coding and decoding is realized, and the method is suitable for real-time high-definition video transmission scenes such as remote monitoring and video conferences.

A transmitter includes a distributor that receives a stream of digital video samples and distributes the digital video samples into vectors in a buffer per a permutation. A digital-to-analog converter (DAC) per vector receives from its corresponding vector the digital video samples and converts the digital video samples into analog video samples. A wiring harness transports each series of analog video samples to a source driver of a display panel of a display unit. Each source driver includes a collector that receives analog video samples from each DAC and stores the analog video samples of the corresponding vector, and amplifiers that receive the stored analog video samples in parallel from the collector and amplifies the stored analog video samples onto a column of the display panel. Synchronization uses modified MFM and sample phase alignment. The source drivers are integrated with the substrate of the display panel using transistors.

A video processing system includes an image quality control apparatus and a detection apparatus. The image quality control apparatus includes an image quality control unit configured to control image quality of each region of a video, and a transmission unit configured to transmit, to the detection apparatus, the video of which the image quality is controlled. The detection apparatus includes a detection unit configured to detect information regarding an object in the video transmitted from transmission unit, and a notification unit configured to notify the image quality control apparatus of a detection result of the detection unit. The image quality control apparatus further includes a determination unit configured to determine the image quality of each region of the video according to the detection result notified from the notification unit, the image quality being controlled by the image quality control unit.

Systems and methods for performing liveness detection. A method includes transmitting an image or a video by a threat detector to one or more filters for a first level check for detecting a threat based on analysis of certain characteristics, transmitting the image or the video to one or more special models for a second level check, wherein the one or more special models are configured for detecting multiple types of threats on the image or the video, transmitting the image or the video to a general model ensemble for a third level check to classify the image or the video according to individual features into original and fake, and in response to detecting the threat, registering the threat by the threat detector.

The invention discloses a transmission method and a construction method of a self-adaptive vehicle-mounted video transmission network. The transmission method comprises the following steps: monitoring transmission quality information in each link in a first vehicle-mounted video transmission network for transmitting a vehicle-mounted video transmission data stream in real time; generating a topology switching instruction according to the transmission quality information of each link in the first vehicle-mounted video transmission network under the condition that the transmission quality information meets a quality deterioration condition; and controlling the transmission node to be switched from the first network topology to the second network topology by reconfiguring a port mapping relation of the transmission node according to the topology switching instruction. Therefore, the reliability and performance of the vehicle-mounted video transmission network are ensured in various application scenes, and the transmission efficiency of the vehicle-mounted video transmission network is improved.

Aircraft having a security system at the interface between a first domain and a second domain. The aircraft (10) comprises a first domain (12, 14) having lower security requirements, including at least one system (42, 44) for generating an input video stream (20), and a second domain (16) having higher security requirements, including at least one system for processing and / or displaying an output video stream (22) obtained from the first domain (12, 14). It includes a video stream security system (18) forming a video interface between the first domain (12, 14) and the second domain (16), the security system (18) being configured to receive the input video stream (20) according to the first video transmission protocol and to generate the output video stream (22) from the input video stream (20), according to a second video transmission protocol. Figure for the abbreviation: Figure 1

The invention discloses a video stream asymmetric transmission method and device for a resource-constrained terminal, and belongs to the technical field of video transmission. Through terminal-side resource perception and mode self-adaption, a privacy area and a background of a video frame are separated, and an application layer asymmetric transmission channel is established for the privacy area and the background; by combining the asynchronous fault-tolerant recombination and edge fusion technology of a video receiving end, the system can still keep the core target of a monitoring picture continuous, clear and distinguishable in a mode of losing the background without losing the target under the extreme environment of low electric quantity, high load or serious network packet loss of the terminal, and meanwhile, the equipment endurance is remarkably prolonged, and the system can be widely applied to the field of video monitoring. According to the method, the image splicing artifacts are eliminated, so that the survivability, robustness and visual experience of the resource-limited mobile video monitoring system in a weak network environment are greatly improved on the premise of ensuring privacy security.