10results about How to "Efficient coding" patented technology

The invention relates to a training method of an image generation model and an image generation method and device.The method comprises the steps that a first sample noise adding image and a first sample description text are obtained, the first sample description text is input into a preset text encoder for text encoding, and a first global semantic feature and a first character semantic feature are obtained; generating a first sample fusion condition feature based on the first global semantic feature and the sample time step; inputting the first character semantic feature, the first sample fusion condition feature and the first sample noise adding image into a preset noise predictor for noise prediction processing to obtain first prediction noise; performing denoising processing on the first sample noise-added image based on a denoising network to obtain a predicted image; and according to the difference between the first prediction noise and the sample noise label and the difference between the prediction image and the first sample image label, training the preset image generation model to obtain the target image generation model, thereby improving the semantic following capability and accuracy of the image.

The invention discloses an aromatherapy intelligent margin calculation method based on vehicle body data dynamic perception. The method comprises the following steps: S1, generating an initial data set; s2, inputting the initial data set into a multi-channel variational encoder, and outputting hierarchical feature representation; s3, inputting the hierarchical feature representation into a spatio-temporal context sensing module to generate spatio-temporal feature representation; s4, inputting the spatial-temporal feature representation into a heterogeneous feature mapping layer to generate a unified data representation; s5, inputting the unified data representation into a dynamic prediction regulation and control module, and generating an optimized feature representation; s6, inputting the optimized feature representation into an aromatherapy residual amount prediction model, and performing residual amount prediction by using a Gaussian mixture process; s7, inputting an aromatherapy residue prediction result into a feedback integrator, and carrying out self-supervised learning; and S8, integrating to a vehicle-mounted system, displaying an aromatherapy allowance state and sending a personalized notice. According to the method, accurate prediction and calculation of the vehicle-mounted aromatherapy allowance are realized by utilizing multi-channel variational coding, spatio-temporal context perception, a Gaussian process and the like.

The present invention discloses a method and system for identifying urban functional areas by fusing multimodal time series data, and belongs to the technical field of remote sensing image processing. The method comprises: obtaining multi-temporal remote sensing images of a study area and performing a first preprocessing to obtain remote sensing images of four seasons; obtaining road network data and performing a second preprocessing, and superimposing them on the remote sensing images of four seasons; extracting spatial features from the single-season remote sensing images superimposed with road network data, extracting temporal features from the remote sensing images of four seasons, and obtaining spatiotemporal fusion features; obtaining POI data and performing a third preprocessing to extract social function semantic features from the POI data; fusing the spatiotemporal fusion features with the social function semantic features to obtain the classification results of urban functional areas. The present invention identifies urban functional areas by fusing multimodal time series data, which can make up for the defect of insufficient information in urban functional area classification research relying only on single-modal data, and enhance the accuracy of identification.

The invention discloses an in-well ultra-long cable communication system and method based on polarization coding, and relates to the field of wired communication. The system comprises in-well telemetry equipment, ground communication equipment and an upper computer, the method comprises the following steps: firstly, performing OFDM modulation on original data in a well based on polarization coding; then carrying out digital-to-analog conversion on the modulated OFDM signal; the analog signal is transmitted to ground communication equipment, and an OFDM sampling signal is acquired; and finally, demodulating the OFDM sampling signal, and displaying and storing the OFDM sampling signal according to a preset data frame format to complete acquisition and storage of data in the well. Polarization coding adopted by the method is suitable for high-speed data transmission in a well, and especially under the condition that the requirement for the data transmission rate is high, coding and decoding mechanisms of the polarization coding can be utilized, and the bit error rate is reduced; in a well cable communication environment with large noise and interference, polarization coding can distribute information bits to reliable channels through polarization characteristics of the polarization coding, so that the anti-interference capability is improved.

An audio processing method and apparatus, and an electronic device, a computer-readable storage medium and a computer program product. The method comprises: performing filtering processing on an audio signal, so as to obtain a low-frequency signal and a high-frequency signal (101); coding the low-frequency signal to obtain a code stream of the low-frequency signal (102); performing frequency-domain transformation processing on the low-frequency signal, so as to obtain a low-frequency spectrum, and performing frequency-domain transformation processing on the high-frequency signal, so as to obtain a high-frequency spectrum (103); performing spectral-envelope extraction processing on the low-frequency spectrum and the high-frequency spectrum, so as to obtain spectral-envelope information, and performing spectral-flatness extraction processing on the high-frequency spectrum, so as to obtain spectral-flatness information (104); and performing quantization coding processing on the spectral-flatness information and the spectral-envelope information, so as to obtain a frequency-band expanded code stream, and forming a coded code stream by combining the frequency-band expanded code stream and the code stream of the low-frequency signal (105)..

The invention provides a graph data representation method based on multiple virtual nodes and random hash propagation, and relates to the field of graph data representation, and the method comprises the steps: carrying out node importance evaluation and feature similarity clustering on an original graph, and dividing the nodes into a plurality of node clusters; introducing at least one virtual node for each node cluster, constructing a connection relationship between the virtual node and all real nodes in the cluster, and forming a structure enhancement graph; maintaining a sketch vector of which the fixed dimension is K for each real node and each virtual node on the structure enhancement graph; based on a random hash function family, performing multi-round propagation and updating on the sketch vector, and generating node representation fusing node attributes and multi-order structure information; and directly applying the node representation to a graph data processing task. According to the technical scheme, joint modeling of the node attribute information and the multi-order structure information in the complex graph structure is achieved.

The application discloses a point cloud isolated point coding method, a decoding method and a device, and the method comprises the following steps: obtaining an isolated node flag bit and a context set of the isolated node according to to-be-coded point cloud data and an occupation condition of a node of a previous layer; coding the point cloud isolated node flag bit according to the context set of the isolated node flag bit, so as to obtain a binary code stream corresponding to the point cloud isolated node flag bit; coding coordinates of the isolated node according to the point cloud isolated node flag bit; and updating the occupation condition of a node of a next layer corresponding to the isolated node according to the coordinates of the isolated node. The application codes the point cloud isolated node based on the context set, can realize efficient coding of the isolated node flag bit through the context, and does not miss the actual non-empty neighbor node, so that the performance of entropy coding is improved.

The invention provides a three-dimensional point cloud coding method and device, a three-dimensional point cloud decoding method and device and electronic equipment, and belongs to the technical field of artificial intelligence. The coding method comprises the following steps: down-sampling an original point cloud according to a down-sampling parameter to obtain a down-sampling point cloud and target information of each point in the down-sampling point cloud, the down-sampling parameter being a non-integer greater than 1; determining neighbor occupation information of each point in the down-sampling point cloud; clustering the down-sampling point clouds according to the down-sampling parameters to obtain a point cloud cluster; training an interpolation network according to the clustering clusters according to the target information and the neighbor occupation information of each point in each point cloud clustering cluster to obtain optimized interpolation network parameters of each clustering cluster; and performing lossless coding on the down-sampling point cloud to obtain down-sampling point cloud coding data, and coding the interpolation network parameters of each cluster to obtain network coding data, so that point cloud coding of fractional down-sampling can be effectively supported, and more flexible and efficient point cloud compression can be realized.