82 results about "Signal coding" patented technology

The invention discloses a gesture recognition control method and system for a range hood and the range hood. According to the gesture recognition control method for the range hood, two sets of infrared geminate transistor sensors are controlled to emit infrared emission signals with preset coding values in a synchronous period; acquiring the signal intensity, the signal coding matching degree and the receiving time interval of two groups of corresponding infrared receiving signals after the two groups of infrared sending signals are reflected, judging whether an effective gesture judgment condition is met or not based on the signal intensity, the signal coding matching degree and the receiving time interval, and when the effective gesture judgment condition is met, executing the step 2; if yes, the gestures currently detected by the two sets of infrared geminate transistor sensors are determined to be effective gestures, and the range hood is controlled to execute control actions corresponding to the control instructions based on the control instructions corresponding to the effective gestures; coding verification, intensity verification and sequential logic-based dual-channel correlation judgment are carried out on the two groups of infrared receiving signals, so that efficient, reliable and high-interference-resistance non-contact waving action recognition can be ensured.

An embodiment is related to a decoder / encoder for decoding / encoding a multi-channel digital signal from / into a data stream configured to decode / encode coded channels representing the multi-channel digital signal from / into the data stream in temporal blocks with sequentially decoding / encoding from / into the data stream a predetermined temporal block of each of the coded channels before decoding a subsequent temporal block of any of the coded channels by determining one or more prediction parameters and predicting a current temporal block of a predetermined coded channel from a reference block portion of one or more reference channels using the one or more prediction parameters. The one or more prediction parameters are determined based on a preceding temporal segment of the predetermined coded channel and a preceding temporal reference segment of the one or more reference channels.

A sensing system (50) that can image a phase change medium comprises: a transmission device (10) that generates a radar signal, generates a code, generates a carrier signal, generates a high-frequency signal by using the carrier signal and a multiplication signal obtained by multiplying the radar signal by the code, and transmits the high-frequency signal from a plurality of transmission antenna elements (18); a reflection plate (22); and a reception device (30) that receives, by a plurality of reception antenna elements (32), a high-frequency signal that is a reflected wave reflected by the reflection plate (22) or a measurement target (21) that is a phase change medium, or a scattered wave scattered by the same, converts the high-frequency signal into a baseband or intermediate-frequency reception signal, generates transmission path information from the reception signal by using the radar signal, the carrier signal, and the code, identifies the position of the measurement target (21) by using the transmission path information, corrects the focal point of the measurement target (21), determines the phase change of the measurement target (21), and generates an image of the measurement target (21).

The application provides a semiconductor laser reservoir pool computing device based on silicon-based micro-resonant cavity optical feedback, and belongs to the technical field of photonic neuromorphic computing. Laser output by a driving laser is modulated by a phase modulator, and then is injected into a response semiconductor laser through a feedback cavity incoupler and a circulator; the output end of the response semiconductor laser is connected to an optical circulator in sequence through a second variable optical attenuator, a polarization controller, a silicon-based micro-resonator and a first variable optical attenuator, so as to form a silicon-based micro-resonator optical feedback loop; the output end of the feedback cavity incoupler is connected to a broadband photodetector, which is used to collect reservoir pool output signals; the phase modulator is loaded with a modulation signal containing an input signal and a random mask, so as to realize input layer signal coding. The application realizes the improvement of overall computing performance.

A video coding mechanism for view-dependent video coding is disclosed. The mechanism includes receiving a spherical video signal spliced from a multi-directional video stream. The spherical video signal is mapped into a plurality of sub-picture video signals, each of which includes a sequence of sub-pictures. The plurality of sub-picture video signals are coded into a plurality of sub-picture bitstreams such that, when decoded in a decoder, each pixel in each sub-picture has a value equal to a corresponding pixel in a whole picture composed of the sub-pictures after decoding. The plurality of sub-picture bitstreams form a plurality of sub-picture tracks, and it is indicated that the sub-picture tracks conform to a specific video profile. The sub-picture bitstreams are sent to a decoder to support decoding and displaying a virtual reality video view.

This invention provides a method for improving the coding quality of multi-channel signals and an encoder. [Solution] The method includes the steps of: acquiring a multichannel signal of the current frame; determining an initial interchannel time difference (ITD) value for the current frame; and controlling the number of target frames that are allowed to appear consecutively based on characteristic information of the multichannel signal. The characteristic information includes at least one of the signal-to-noise ratio parameter of the multichannel signal and the peak features of the cross-correlation coefficient of the multichannel signal, and the ITD value of the frame preceding the target frame is reused as the ITD value of the target frame. The method also includes the steps of: determining the ITD value of the current frame based on the initial ITD value of the current frame and the number of target frames that are allowed to appear consecutively; and encoding the multichannel signal based on the ITD value of the current frame.

The application provides a video sending method, a video receiving method and related devices, and relates to the field of digital video signal coding. The method comprises the following steps: obtaining an original transmission video, and obtaining an original transmission image according to the original transmission video; converting the original transmission image into a preset image format to obtain a converted transmission image; splitting the converted transmission image according to color information to obtain a plurality of color images, wherein the color images comprise a first color image, a second color image and a third color image; respectively encoding the plurality of color images to obtain a first encoded image of the first color image, a second encoded image of the second color image and a third encoded image of the third color image; converting the encoded images into transmission information; and sending the transmission information to a receiving end, so that the receiving end can obtain the original transmission video according to the transmission information. The method can reduce network pressure during transmission and make the received file meet the requirement of visual lossless quality after being decoded.

A video encoding / decoding method and device disclosed herein determine the current block through block division based on a tree structure and sub-sample the current block to form one or more sub-blocks from the current block, and can encode / decode the sub-blocks belonging to the current block according to a prescribed scan order.

A video signal encoding method according to an embodiment of the present invention comprises checking a transform block including residual samples except a prediction sample from a picture of the video signal, generating transform coefficients through a transform for the residual samples of the transform block based on a size of the transform block, and performing quantization and entropy coding the transform coefficients, wherein generating the transform coefficients includes, applying a forward primary transform to each of a horizontal direction and vertical direction of the transform block including the residual samples, and not applying a forward non-separable secondary transform to the transform block to which the primary transform has been applied when the size of the transform block is smaller than or equal to 4×4, and applying the forward non-separable secondary transform to the transform block when the size of the transform block is greater than 4×4.

This invention discloses a high-speed communication link transmitter modeling method based on a Transformer decoder. This method parameterizes the input signal and establishes a deep learning model with an encoder-decoder architecture, including a non-sequential encoder and a Transformer sequential decoder, to predict the output signal of the transmitter given the input signal. The encoder processes the input signal parameters, generates a context vector, and then passes it to the decoder. The decoder uses the context vector and the transmitter output signal sequence to generate a class probability distribution for each point in the sequence. The model is trained using a random masking strategy and employs non-autoregressive decoding and filtering techniques for inference, achieving parallel output sequence prediction. The final output is obtained through a single signal filtering step. Compared with traditional simulation techniques, this method significantly improves simulation speed while maintaining a very small error.

An image signal encoding / decoding method and device according to the present disclosure may comprise the steps of: partitioning the current block into a plurality of partitions on the basis of geometric partitioning, wherein the plurality of partitions include a first partition and a second partition; generating a first prediction block for the first partition by performing any one of intra prediction or inter prediction; generating a second prediction block for the second partition by performing any one of intra prediction or inter prediction; and generating a final prediction block for the current block through a weighted sum operation for the first prediction block and the second prediction block, wherein weights for the weighted sum operation may be determined on the basis of a lookup table.

A method for decoding an image includes that: in case to derive a first prediction and a second prediction corresponding to a coding block, a partition type of the coding block is determined; first motion information regarding the first prediction of the coding block and second motion information regarding the second prediction of the coding block are derived; and a prediction sample of the coding block on the basis of the first motion information and the second motion information is acquired.

The application discloses a kind of multilayer multi-frequency radial stripe encoding and decoding method and device, to solve the technical problems that the existing stripe encoding and decoding mostly uses traditional single direction modulation stripe encoding and decoding technology to cause high projection cost.The method comprises obtaining stripe image basic parameters and preset frequency range, and generating multi-frequency stripe geometric parameters.After constructing stripe encoding pattern based on preset radius and angle conditions, signal encoding and phase shift zero point signal are extracted respectively, and the main pattern is calibrated to zero using zero point signal.The processed pattern is projected to the measured object, and after collecting multiple stripe images, the target absolute phase is obtained according to the frequency decoding of each frequency band stripe.Finally, three-dimensional information is output through depth phase mapping model.

A video decoding method according to the present invention comprises the steps of: generating a merge candidate list of a current block; determining a merge candidate of the current block from merge candidates included in the merge candidate list; deriving an offset vector of the current block; and deriving a motion vector of the current block by adding the offset vector to the motion vector of the merge candidate.

A video signal encoding method according to an embodiment of the present invention comprises checking a transform block including residual samples except a prediction sample from a picture of the video signal, generating transform coefficients through a transform for the residual samples of the transform block based on a size of the transform block, and performing quantization and entropy coding the transform coefficients, wherein generating the transform coefficients includes, applying a forward primary transform to each of a horizontal direction and vertical direction of the transform block including the residual samples, and not applying a forward non-separable secondary transform to the transform block to which the primary transform has been applied when the size of the transform block is smaller than or equal to 4×4, and applying the forward non-separable secondary transform to the transform block when the size of the transform block is greater than 4×4.

A video encoding / decoding method according to the present disclosure may comprise the steps of: inducing a reference mode of respective neighboring blocks within a current block; and performing, on the basis of at least one of reference modes, intra prediction on a sub-block, in the current block, that is smaller than the current block.

A method and device for adaptive neural image compression, and a computer device, the method comprising: generating statistical features based on an input image and hyperparameters; generating first shared features and estimated adaptive coding parameters; encoding the input image based on the generated first shared features and the generated estimated adaptive coding parameters to obtain a signal coded image; generating second shared features and estimated adaptive hyper-coding parameters; generating hyper-features based on the signal coded image, the generated second shared features and the generated estimated adaptive hyper-coding parameters; and compressing the obtained signal coded image, the generated statistical features and the generated hyper-features.

The invention relates to the technical field of laser communication microwave coding, in particular to an interstellar laser communication microwave coding method, which comprises the following steps: acquiring a microwave signal to be transmitted, converting the microwave signal into a digital signal, arranging the acquired digital signal according to a magic square construction rule, generating a magic square code, loading the magic square code onto a laser beam, and transmitting the magic square code to the laser beam. And transmitting the laser beam loaded with the microwave signal to a destination. A mathematical principle of a magic square is utilized, microwave signals to be transmitted are converted into digits, then the digits are arranged in the magic square according to a certain rule, the digits are loaded to light waves through laser beams, transmission of the microwave signals is achieved, the signals are effectively coded and transmitted, the anti-interference capacity of the signals is improved, the microwave signals are loaded to the laser beams, and the transmission efficiency is improved. According to the invention, high-speed and high-bandwidth transmission can be realized, different coding modes can be realized through different magic square construction methods, and the flexibility is very high.

A method for wireless communication at a first device and related apparatus are provided. In the method, the first device encodes an input signal into an encoded signal using a shift-invariant low-density parity-check (LDPC) convolutional coding. The shift-invariant LDPC convolutional coding is associated with an LDPC shift-invariant graph including a first plurality of streams of check nodes and a second plurality of streams of variable nodes. The LDPC base graph corresponding to a check node in the first plurality of streams of check nodes or a variable node in the second plurality of streams of variable nodes is independent of the position index of the check node or the variable node. The first device further transmits the encoded signal to a second device. The encoded signal includes coded bits corresponding to the second plurality of streams of variable nodes.

A method for decoding an image includes that: in case to derive a first prediction and a second prediction corresponding to a coding block, a partition type of the coding block is determined; an index of a second merge candidate is determined based on a comparison between a value of second index information and a value of first index information; first motion information regarding the first prediction of the coding block and second motion information regarding the second prediction of the coding block are derived; and a prediction sample of the coding block on the basis of the first motion information and the second motion information is acquired.

A video decoding method includes generating a prediction information merge list for a current block, selecting one of prediction information merge candidates included in the prediction information merge list on the basis of index information, and obtaining a prediction block for the current block on the basis of prediction information on the selected prediction information merge candidate.

The application discloses a signaling transmission method, device and system based on non-independent control channel, belonging to the technical field of wireless communication. The method comprises the steps of link synchronization, signaling generation at the sending end, signaling coding at the sending end, information multiplexing modulation at the sending end, information demodulation and demultiplexing at the receiving end, signaling decoding at the receiving end and signaling execution at the receiving end. The signaling control information is multiplexed in the link transmission information for transmission, so that the separate signaling control device is no longer occupied, the hardware resource is saved, the complexity of the communication system is reduced, and the reliability of the whole communication system is improved. The transmission of the signaling information in the known time slot obviously reduces the requirement for the signaling synchronization of the communication system. The control signaling and the service information are multiplexed and transmitted, the frequency spectrum resource is shared, the waste of the frequency spectrum resource caused by the separate occupation of the signaling channel and the frequency protection interval in the transmission of the independent control channel is avoided, and the system frequency spectrum utilization efficiency is improved.

An apparatus and method for coding a multi-channel waveform signal from or into a data stream using block-based prediction is presented. The apparatus is configured to decode from the data stream a commonality syntax element indicating for a plurality of channels of the multi-channel waveform signal, whether, among a set of prediction modes supported by the apparatus, one prediction mode is commonly attributed to the plurality of channels, if the commonality syntax element indicates that one prediction mode is commonly attributed to the plurality of channels, decode a set of one or more prediction mode syntax elements from the data stream which indicate a selected prediction mode out of the set of prediction modes, wherein the selected prediction mode is the one prediction mode, or appoint a selected prediction mode indicated by a set of one or more prediction mode syntax elements decoded for a first channel among the plurality of channels the one prediction mode, or use a default prediction mode among the set of prediction modes as the one prediction mode, and decode each of the plurality of channels using the one prediction mode, and, if the commonality syntax element does not indicate that one prediction mode is commonly attributed to the plurality of channels, decode, from the data stream, for each of the plurality of channels, the set of one or more prediction mode syntax elements, which indicate a selected prediction mode out of the set of prediction modes for the respective channel, and decode each of the plurality of channels using the selected prediction mode for the respective channel.

The invention relates to a method of encoding an input signal into a plurality of encoded streams, wherein the encoded streams can be combined to reconstruct the input signal. The method comprises receiving the input signal; down-sampling the input signal to create a down-sampled signal; instructing to encode the down-sampled signal using a base encoder to create a base encoded stream; instructing to decode the base encoded stream using a base decoder to generate a reconstructed signal; comparing the reconstructed signal with the input signal to create a set of residuals; and encoding the set of residuals to create an encoded stream, which comprises applying a transform to the set of residuals to create a set of transformed coefficients, applying a quantization operation to the set of transformed coefficients to create a set of quantized coefficients, and applying an encoding operation to the quantized coefficients. Wherein the quantization operation is performed based on temporal information associated with the set of transformed coefficients. The invention also relates to a method of decoding an encoded stream into a reconstructed output signal.

A video encoding / decoding method according to the present disclosure may comprise the steps of: inducing a reference mode of respective neighboring blocks within a current block; and performing, on the basis of at least one of reference modes, intra prediction on a sub-block, in the current block, that is smaller than the current block.

A sound signal downmixing method includes a step of obtaining, for each of two channels, a signal obtained by adding an input sound signal of one channel to a signal obtained by delaying an input sound signal of the other channel and multiplying the delayed input sound signal by a weight value as a delayed crosstalk-added signal of the one channel, a step of obtaining preceding channel information and a left-right correlation value, and step of obtaining a downmix signal by performing weighted addition on the input sound signals of the two channels based on the left-right correlation value and the preceding channel information such that more of a signal derived from an input sound signal of a preceding channel among the signals derived from the input sound signals of the two channels is included as the left-right correlation value becomes larger.

An ear-wearable device includes an acoustic sensor that receives ambient sound and produces an input signal. The device includes an acoustic transducer that reproduces sound in an ear of a user based on an output signal. A machine learning processing path includes: an encoder layer that encodes the input signal into a latent representation; a sound enhancement layer that produces an enhanced latent representation that provides an audio enhancement independent of an individual hearing pathology; a tuning layer that is configured to represent a user-specific hearing pathology and that modifies the enhanced latent representation to provide a tuned and enhanced latent representation that tailors the audio enhancement to compensate for the user-specific hearing pathology; and a decoder layer that decodes the tuned and enhanced latent representation to produce the output signal.

A signal encoding and decoding method is performed by an encoding end, and includes: obtaining an audio signal in a mixed format, wherein the audio signal in the mixed format includes at least one format of a channel-based audio signal, an object-based audio signal, or a scene-based audio signal; determining, based on signal characteristics of audio signals in different formats, an encoding mode of the audio signal in each format; and encoding the audio signal in each format using the encoding mode of the audio signal in each format to obtain encoded signal parameter information of the audio signal in each format, writing the encoded signal parameter information of the audio signal in each format into an encoded stream and sending the encoded stream to a decoding end.

A video decoding method according to the present disclosure includes the steps that: a merge candidate list for a current block is generated; a merge candidate for the current block is determined among merge candidates included in the merge candidate list; an offset vector for the current block is derived; and a motion vector for the current block is derived by adding the offset vector to a motion vector of the merge candidate.

A video decoding method according to the present disclosure includes the steps that: a merge candidate list for a current block is generated; a merge candidate for the current block is determined among merge candidates included in the merge candidate list; an offset vector for the current block is derived; and a motion vector for the current block is derived by adding the offset vector to a motion vector of the merge candidate.