845 results about "Bitstream" patented technology

By implementing a new bitstream for a Delta-Quantization Parameter (DQP), a decoder is able to implement parallel decoding of multiple coding units within a largest coding unit. In some embodiments, the DQP is placed immediately after the mode information of the first coding unit. In some embodiments, the DQP is placed after the mode information of the first non-skipped coding unit. In some embodiments, the DQP is placed after the first non-zero coded block flag.

The various implementations described herein include methods and systems for encoding video. In one aspect, a method includes receiving a mesh with polygons representing a surface of an object; detecting a first symmetric region in the mesh that includes a first symmetry line to divide the first symmetric region into a first partition and a second partition. The method includes recursively determining whether one of the first partition or the second partition includes a second symmetric region until no symmetric region is detected in both the first partition and the second partition. The method includes in response to detecting the second symmetric region within one of the first partition or the second partition: determining a second symmetry line within the second symmetric region to divide the first or the second partition into a third sub-partition and a fourth sub-partition; and compressing information of the third sub-partition, the second symmetry line and the first symmetry line into a bitstream.

This disclosure provides a cross-channel distributed video encoding and decoding method and system based on multidimensional attention, which can be applied to the field of video encoding and decoding technology. The method includes: acquiring a group of video images to be transmitted, the group of video images including a first key reference frame, a second key reference frame, and at least one intermediate video frame; encoding the first key reference frame and the second key reference frame into first encoded data and second encoded data, respectively; encoding each intermediate video frame into third encoded data based on a frame encoder; extracting multi-scale features from each third encoded data based on a multidimensional attention mechanism; processing the multi-scale features into fourth encoded data based on a multi-channel feature extraction mechanism; processing at least one fourth encoded data into a first bitstream; and converting the first encoded data and the second encoded data into a second bitstream, so as to transmit the video image group to the decoder via the first bitstream and the second bitstream.

An image encoding / decoding method and device are provided. An image decoding method according to the present disclosure comprises the steps of: determining reference samples separated by a distance of n samples from a current block and reference samples separated by a distance of m samples from the current block (wherein the reference samples separated by the distance of n samples include a top reference sample and a top-right reference sample, and reference samples separated by the distance of m samples include a left reference sample and a bottom-left reference sample); and generating a prediction block of the current block on the basis of a weighted sum of at least two of the determined reference samples, wherein the weight used in the weighted sum calculation is determined on the basis of the n or m, which may be natural numbers.

This disclosure provides a voice signal decoding method and apparatus and an electronic device. An encoding apparatus encodes an original voice signal, to obtain an encoded bitstream. The encoded bitstream includes an acoustic feature encoding result. A decoding apparatus obtains the acoustic feature encoding result in the encoded bitstream, obtains a style feature from the acoustic feature encoding result, obtains an excitation feature, performs style fusion processing on the excitation feature and the style feature, to obtain a fused voice feature, and reconstructs a decoded voice signal based on the voice feature. Because the style feature indicates a voice style of an original voice signal, a voice feature in the original voice signal can be restored from the voice feature obtained by performing style fusion on the excitation feature and the style feature.

Various techniques are provided to implement information leakage mitigation associated with data communications. In one example, a method includes receiving a bitstream including a plurality of bits. The method further includes, for each bit of the plurality of bits, transitioning between two states of a plurality of states in response to the bit; inverting a differential pair of data signals associated with the bit in response to the transitioning to obtain differentially transitioned data signals; maintaining a third data signal associated with the bit in response to the transitioning; and transmitting each data signal of the differentially transitioned data signals and the third data signal over a respective wire. Related systems and devices are provided.

A video decoding method and device according to the present disclosure may receive a bitstream including an encoded video picture and reconstruct the encoded video picture included in the bitstream. Here, the bitstream may include a quality metric SEI message. The quality metric SEI message may include a quality metric definition flag indicating whether information defining the quality metrics is included in the quality metric SEI message, and quality metric number information indicating the number of quality metric entries included in the quality metric SEI message.

A system and method of decoding a tensor from a bitstream. The method comprises decoding a first unit of information from the bitstream, the first unit of information corresponding to an average tensor value across channels of the tensor; decoding a second unit of information from the bitstream, the second unit of information corresponding to components of a decomposition of the tensor; decoding a third unit of information from the bitstream, the third unit of information corresponding to coefficients relating the first unit of information of the tensor; and decoding a fourth unit of information from the bitstream, the fourth unit of information corresponding to coefficients relating the second unit of information of the tensor. The method further comprises producing the tensor on a channel-wise basis by multiplying the coefficients for a respective channel with the average tensor value and the components of the decomposition of the tensor with coefficients associated with the decomposition of the tensor, wherein at least one of the first, second, third, and fourth units of information from the bitstream are independently decodable with respect to at least one of the other units of information and each unit of information is arranged in a plurality of two- dimensional arrays of samples. 20 24 26 45 78 12 N ov 2 02 4 A B S T R A C T 2 0 2 4 2 6 4 5 7 8 1 2 N o v 2 0 2 4

An image encoding / decoding method and device according to the present disclosure may generate a candidate list of a current block and perform inter prediction of the current block on the basis of motion information of any one of multiple candidates belonging to the candidate list. The multiple candidates may include at least one of spatial candidates, temporal candidates, or derived candidates.

Systems and methods for subband audio coding are disclosed. One example provides a method for encoding an input audio signal in a bitstream from a first device to a second device. The method includes obtaining, with the first device, a representation of the input audio signal in subbands, dividing a current frame into a current subset of the subbands excluding other subbands, and determining prediction parameters for the current subset of the subbands. The method further includes determining, with the first device, an active / passive flag for at least one of the subbands, and encoding the bitstream with the current subset of the subbands, a number of the subsets, the prediction parameters for the current subset of the subbands, and the active / passive flag for the other subsets of the subbands. The method can include decoding the bitstream with the second device.

This invention discloses a dual-stream point cloud compression method and system based on semantic scene graphs, relating to the field of point cloud compression. It constructs a point cloud compression network comprising an encoder network and a decoder network: In the encoder network, semantic labels are mapped onto the input point cloud, and scene graphs and octree representations are constructed respectively. Semantic modulation parameters are generated based on the scene graph and encoded to obtain a semantic bitstream. The octree representation, under the influence of semantic modulation parameters, undergoes feature enhancement and attention probability prediction to obtain node occupancy probabilities, and a geometric bitstream is generated through arithmetic encoding. These two bitstreams serve as compressed data. In the decoder network, the bitstreams are decoded, and the octree structure and scene graph information are reconstructed. Node feature representations are recovered by combining the semantic modulation parameters. The reconstructed octree structure is mapped back to the point cloud space through spatial querying and indexing to reconstruct the point cloud. This invention solves the problem of local geometric distortion in low-bitrate octree point cloud compression, ensuring reconstruction quality while reducing the transmission bitrate.

This application relates to a method for decoding video data implemented by an electronic device. The electronic device receives a luminance transition skip flag and a plurality of luminance transition samples, as well as a Low Frequency Inseparable Transform (LFNST) index associated with a transform unit, via a bitstream. Upon receiving the LFNST index, the electronic device receives a chroma transition skip flag and a chroma transition sample associated with the transform unit via the bitstream. Based on a determination that the LFNST index is not zero and the luminance transition skip flag is zero, an inverse LFNST is applied to the luminance transition sample to generate a decoded luminance sample for the transform unit. In some embodiments, the LFNST index is received based on a determination that the luminance transition skip flag is zero and the number of non-zero luminance samples in the luminance transition sample is within a predefined range.

Some embodiments of a method can include obtaining a point cloud, which can include a first set of information describing geometry of the point cloud and a second set of information describing attributes of the point cloud; performing geometry encoding of the first set of information to generate a geometry bitstream; performing a two-stage attribute compression process to generate an attribute bitstream, wherein a first stage of the two-stage attribute compression process includes performing a block transform on each node of a set of nodes of the point cloud, and wherein a second stage of the two-stage attribute compression process includes performing hierarchical encoding on the set of nodes of the point cloud, and outputting an output bitstream including the geometry bitstream and the attribute bitstream.

We provide video coding, encoders, and decoders that further improve efficiency based on trained networks. [Solution] To handle lumer-chroma channels of different sizes, the chroma component is upsampled so that the resulting upsampled chroma component has a resolution matching one of the lumer components. The lumer and upsampled chroma components are then encoded into a bitstream. To reconstruct the picture portion, the lumer component and an intermediate chroma component matching the resolution of the lumer component are decoded from the bitstream, and then the intermediate chroma component is downsampled. The subsampled chroma format is handled by an autoencoder / autodecoder framework while preserving the lumer channel.

This invention belongs to the field of electronic digital data processing technology, specifically relating to a low-altitude communication data anomaly detection system and method based on edge intelligence. The system parses protocol fields from the raw bitstream of the low-altitude communication link layer, extracts type identifiers and payload lengths to construct a protocol state machine transition matrix, and utilizes a Long Short-Term Memory (LSTM) network to extract state transition probability sequence features. Geographically adjacent edge nodes are set as micro-federated learning groups. Each node, after training using local features, only uploads network gating weight parameters to its neighboring nodes for weighted aggregation to update its local model. An alarm is triggered when the real-time state transition probability sequence deviates from the normal transition matrix and exceeds a preset topology threshold. This invention can identify protocol state machine logic errors and transition anomalies, reducing the amount of communication data required for collaborative model updates between edge nodes.

The embodiments concern a method for decoding, comprising receiving loading instructions and a bitstream comprising at least encoded video data; determining external data; processing the external data based on the loading instructions to generate one or more pictures; loading the generated one or more pictures to a reference picture buffer to be used as reference pictures; generating one or more predictors from corresponding one or more reference pictures; decoding coding units of the encoded video data with the one or more predictors; and reconstructing a video to be displayed from the decoded coding units. The embodiments also concern a method for encoding and an encoder and a decoder.

Methods and apparatuses are provided to encode data into a bitstream and to decode data from a bitstream. According to the method, the length of the bitstream can be reduced by including only the relevant significant bits within the trailing bits of the encoding process. The amount of these leading trailing bits is determined and the trailing bits, which have the least amount, can be constructed. Indications of the amount of leading trailing bits are included into the bitstream. Therefore, padding is not required, resulting in less bits, which need to be signaled.

A video decoding method including reconstructing a current block comprising a current pixel via a prediction and an inverse transformation. The method including obtaining, from a bitstream, information indicating whether an in-loop filtering by using at least one pixel located outside a boundary of a current slice is applicable. The method including padding a value of the first adjacent pixel as a value of a second adjacent pixel. The method including determining filter coefficients corresponding to locations of third adjacent pixels used for an adaptive loop filter (ALF) of the current pixel based on a value of the current pixel and values of the third adjacent pixels. The method including obtaining a value of a filtered current pixel by adding the value of the current pixel.

This application provides a hard drive status light control system and method for a hard drive backplane, belonging to the field of hard drive hardware management technology. The system provided includes a main hard drive backplane and cascaded hard drive backplanes. The main hard drive backplane is equipped with a SAS expander, a CPLD, and a cascade connector. The cascaded hard drive backplanes are connected to the main hard drive backplane via the cascade connector. The SGPIO of the SAS expander is connected to the input of the CPLD, receiving the SGPIO bitstream signal output from the SAS expander, reconstructing the SGPIO bitstream signal, and sending the reconstructed SGPIO bitstream signal to the cascaded hard drive backplanes. The cascaded hard drive backplanes parse the reconstructed SGPIO bitstream signal and drive the hard drive status lights to indicate the hard drive status based on the parsed SGPIO bitstream signal. The hard drive status light control system and method for a hard drive backplane provided in this application enable the reuse of existing hard drive backplane hardware and firmware, reducing maintenance costs.

A system and method of processing Automotive Ethernet and High-Speed Ethernet signals. The method includes forming a first data path according to a first transmission protocol and a second data path according to a second transmission protocol. The method includes selecting the first data path to receive a first bitstream compliant with the first transmission protocol at a first data rate. The method includes encoding the first bitstream using a first encoding scheme to produce a first encoded bitstream. The method includes upsampling the first encoded bitstream to produce an upsampled bitstream at a different data rate. The upsampled bitstream aligns with transmission requirements of a Physical Medium Attachment (PMA) device. The method includes forwarding the upsampled bitstream to the PMA device.

Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: obtaining, for a conversion between a current point cloud (PC) sample of a point cloud sequence and a bitstream of the point cloud sequence, a first indication indicating whether a multi-reference inter prediction in which a plurality of reference PC samples are used is enabled for the point cloud sequence; and performing the conversion based on the first indication.

Methods encode or decode a picture sequence, some having different resolutions, and transmit a bitstream of encoded video data. The decoding method includes decoding a first syntax element for specifying a reference size of pictures referring to a high-level syntax structure and a second syntax element for specifying a picture size scaled from the reference size of the pictures referring to the high-level syntax structure. The method includes deriving at least one offset factor and at least one scale factor representing a scale difference between a current picture including a current block to be decoded and a reference picture referred to by the current block. The method includes generating a prediction block of the current block from the reference picture by using the motion vector of the current block, the at least one scale factor, and the at least one offset factor. The method includes reconstructing transform coefficients from the bitstream, generating a residual block of the current block by inversely transforming the transform coefficients, and reconstructing the current block based on adding the prediction block and the residual block.

This disclosure proposes a method for video processing. The method includes: converting between video units and a bitstream of video; applying a filtering method to samples associated with the video units, the samples including at least one of: predicted samples or template samples; and performing the conversion based on the filtering method.

A point cloud data transmission method according to embodiments may comprise the steps of: encoding point cloud data; and transmitting a bitstream including the point cloud data. A point cloud data reception device according to embodiments may comprise: a receiver which receives a bitstream including point cloud data; and a decoder which decodes the point cloud data.

Embodiments of this disclosure provide a solution for video processing. A method for video processing is proposed. The method includes: for a conversion between video units and a bitstream of video, determining whether to apply an illumination compensation method to the video units based on information associated with the video units, wherein at least one Local Illumination Compensation (LIC) parameter of the illumination compensation method is derived based on at least one of: neighboring samples or a template; and performing the conversion based on the determination.