14 results about "Adaptive encoding" patented technology

This invention relates to the field of subway security monitoring and video transmission technology, specifically a subway security monitoring video rapid retrieval and multi-channel transmission optimization system. The system includes: an analysis module for extracting feature sets of multi-source heterogeneous metadata within the subway station and matching them with abnormal event templates to obtain a matching confidence level; if the matching confidence level exceeds a preset threshold, an abnormal event is determined and an event feature identifier is output; based on the event feature identifier and combined with spatial and scene information in the metadata, the scope of influence and associated paths of the event are determined; based on the scope of influence and associated paths, a target device retrieval list containing device identifiers, spatiotemporal weights, and initial priorities is obtained. This invention achieves intelligent perception through multi-source data fusion, dynamic resource allocation through scheduling and channelization, and ensures stable delivery of streaming media through adaptive encoding and reliable transmission, thereby comprehensively improving the emergency response capability of the subway security monitoring system.

This invention relates to the field of video coding technology, specifically to a high-definition video stream adaptive coding method based on transmission state awareness, comprising the following steps: determining the range of historical images that the receiving end can stably obtain within the current coding period, and generating corresponding reference reachable boundaries; constraining and recombining the predicted reference relationships of the current image to be encoded, generating reachable reference coding units consistent with the reference reachable boundaries; completing the adaptive coding output of the current video stream based on the reachable reference coding units, and writing back the reference results corresponding to this coding output to subsequent coding periods to update the reference reachable boundaries of the next coding period. This invention avoids premature referencing or processing of data that is still in a retransmission or delayed state, effectively preventing data parsing errors, reference invalidation, and inconsistent results, and improving the reliability of video and large-volume bid document submission processes in electronic bidding systems.

The application discloses a remote guide live broadcast system based on panoramic video, belonging to the technical field of live broadcast and guide, comprising: a panoramic acquisition module generates a live broadcast stream with a guide voice through video splicing, audio processing and adaptive coding; a tourist terminal realizes matching of explanation content and preloading of data by combining positioning and viewpoint prediction; an intelligent interaction module triggers companion chatting when there is no guide audio, and optimizes experience by fusing emotional computing and multi-modal interaction; a voice recognition module completes voice instruction processing and multi-lingual interpretation; an augmented reality module realizes accurate superposition of real scene and virtual content through pose solution, virtual-real fusion rendering, light field and occlusion processing; a self-evolution optimization module collects tourist behavior feedback, and combines deep reinforcement learning and federated learning to jointly optimize a response strategy model and a content recommendation model, so that the system can realize self-evolution and personalized guide, and the immersion and interactivity of remote guide are improved.

The application discloses a marine mobile channel adaptive coding modulation transmission method and system, relates to the technical field of wireless communication, and comprises the following steps: acquiring dynamic sensing data, spatial position and channel state information history sequence of a mobile platform; reconstructing the absolute motion velocity vector of an antenna in a reference navigation coordinate system based on the antenna installation position bias feature; extracting an effective radial velocity scalar in combination with a line-of-sight direction vector; determining the dynamic channel coherence time boundary according to the effective radial velocity scalar, performing truncation processing on the channel sequence to obtain a target prediction input sequence; generating a reference signal-to-noise ratio prediction value by using a time series prediction model; determining a nonlinear rollback compensation amount based on the angular acceleration obtained by differentiating the angular velocity, and then correcting the reference prediction value to obtain a target signal-to-noise ratio and performing physical layer resource mapping; and the application can effectively cope with the prediction failure caused by the dramatic mutation of the carrier attitude, and improve the robustness and throughput of the marine communication link.

A method and an encoder to adjust a coding scheme selection when detecting a transient in an input sound signal. The encoder encodes the input signal in frames using a frequency-domain, FD, coding scheme or time-domain, TD, coding scheme. The method comprises detecting one or more of a transient attack and a transient release in the input signal and a location of the one or more of the transient attack and the transient release in at least one of a current frame and a previous frame. Based on a plurality of conditions associated with the one or more of the transient attack and the transient release it is determined whether or not to force a TD coding scheme, and selecting the TD coding scheme responsive to determining that the TD coding scheme is forced to be used.

Innovations in adaptive encoding for units of a video sequence can improve coding efficiency. For example, some of the innovations relate to encoding that includes adaptive switching of color spaces between units within a video sequence. Other innovations relate encoding that includes adaptive switching of color sampling rates between units within a video sequence. Still other innovations relate encoding that includes adaptive switching of bit depths between units within a video sequence.

Techniques for wireless communication are described. One method includes the step of selecting an encoding type for each of a plurality of payloads. The selecting step includes selecting a low density parity check (LDPC) encoding type for at least a first payload and selecting a turbo code (TC) encoding type for at least a second payload. The method also includes the steps of segmenting each payload into a plurality of code blocks; generating a cyclic redundancy check (CRC) for each code block; encoding each code block and the associated CRC into one or more of a plurality of code words—the encoding step is at least partially based on the encoding type selected for the payload associated with the code block—; and transmitting the code words.

The embodiment of the application provides a battery cluster address coding method and device. The method comprises the following steps: obtaining battery cluster information of an energy storage system, wherein the battery cluster information comprises quantity information and / or address information of the battery cluster; determining whether the battery cluster address of the energy storage system is abnormal according to the battery cluster information; in the case that it is determined that the battery cluster address of the energy storage system is abnormal, sending a battery cluster address coding instruction to a battery management unit, and instructing the battery management unit to code the battery cluster address of the energy storage system. The battery cluster address coding method provided by the embodiment of the application realizes adaptive coding of the battery cluster address by sending a battery cluster coding instruction, and improves the coding efficiency and the accuracy of the coding result.

A method and an encoder to adjust a coding scheme selection when detecting a transient in an input sound signal. The encoder encodes the input signal in frames using a frequency-domain, FD, coding scheme or time-domain, TD, coding scheme. The method comprises detecting one or more of a transient attack and a transient release in the input signal and a location of the one or more of the transient attack and the transient release in at least one of a current frame and a previous frame. Based on a plurality of conditions associated with the one or more of the transient attack and the transient release it is determined whether or not to force a TD coding scheme, and selecting the TD coding scheme responsive to determining that the TD coding scheme is forced to be used.

The present application relates to the field of communication technology, especially to a kind of low-power adaptive telemetry terminal communication method and system based on RDSS of Beidou.The communication method includes the following steps: telemetry terminal real-time monitoring the power state of itself and the signal strength of the environment it is in;According to the power state and signal strength monitored, in combination with the preset power-signal strength mapping table, the transmission power and data transmission rate of telemetry terminal are dynamically adjusted;When the signal strength is lower than the preset threshold, automatically switch to the backup transmission channel for data transmission;According to the channel quality, real-time adjustment of coding and modulation parameters.The present application dynamically adjusts the transmission power and transmission rate by real-time monitoring of power and signal strength, in combination with the power-signal strength mapping table, switches to the backup channel when the signal is weak, and adjusts the parameters of adaptive coding and modulation during transmission.The scheme solves the defects in the prior art, reduces power consumption and prolongs endurance, improves the adaptability of different environments, and ensures reliable data transmission.

This invention discloses an adaptive encoding unified representation method and apparatus for multi-source heterogeneous communication data, comprising: cleaning and preprocessing structured data collected in a communication operation network and selecting multi-source heterogeneous features; mapping the cleaned and preprocessed structured data into a heterogeneous graph and establishing attribute-based edges between different nodes; performing modal vector representation on the multi-source heterogeneous features; weighted fusion of the multi-modal vectors into a single-node feature representation, and performing feature reorganization on the single-node feature representation when a target time is triggered; and achieving alignment and fusion of features of different modalities and different node types in a unified vector space by minimizing the contrastive learning loss function. By uniformly encoding multi-source heterogeneous communication data into low-dimensional, semantically aligned node vectors, the semantic gap of multi-source heterogeneous features can be effectively eliminated, noise interference caused by redundant features can be reduced, and the accuracy and stability of communication user profiling and strategy recommendation models can be improved.

The application discloses a kind of photovoltaic power multiscale intelligent prediction method and system based on multivariate space-time meteorological elements, belong to new energy power prediction technical field.The method includes: based on Hausdorff dimension adaptive coding realizes multiscale fractal space-time representation;Wavelet neural operator is used in wavelet domain to learn function space mapping to reduce computational complexity;Lyapunov exponent guided chaos attention mechanism is introduced to enhance extreme event modeling;Physical information neural network embedding energy conservation and other physical constraints are constructed;Dynamic causal graph neural network modeling time-varying interaction between meteorological elements is established;Hierarchical Bayesian ensemble is used to integrate multiscale prediction results and quantify uncertainty.The application realizes full-scale accurate prediction from second level to seasonal level, significantly improves the prediction robustness, computational efficiency and physical consistency under extreme weather.