44 results about "Error concealment" patented technology

Image series transformation for optimal compressibility is performed with neural upsampling and error resilience. A novel correlation network composed of convolutional layers for feature extraction that extract multi-dimensional features from the image and a channel-wise transformer with attention to capture complex inter-channel dependencies. An angle optimizer enhances compressibility of an image and an error resilience subsystem improves robustness against transmission errors and data loss. The error resilience subsystem applies forward error correction coding, data partitioning based on importance, and embeds error concealment hints. This hybrid approach addresses both local and global features, mitigates compression artifacts, improves image quality, and enhances data integrity during transmission. The correlation network incorporates error correction and concealment techniques during decoding. The model's outputs enable effective image reconstruction, achieving advanced compression while preserving information for accurate analysis.

The invention discloses a multidirectional frame audio stream transmission method, device, equipment and medium, and the method is realized through cooperation of a transmitting end and a receiving end: the transmitting end cuts an original audio stream into independent audio frames, gives priority identifiers to the independent audio frames, and determines redundant coding parameters and transmission paths for different priority frames in combination with a predefined static strategy; generating a data packet containing an original data block and a redundant data block, and sending the data packet through at least one network path; and a receiving end caches the multi-path data packet, recovers lost data by using redundant data blocks to recombine a complete audio frame, and executes error concealment processing on the frame which cannot be recombined to generate a replacement frame. According to the method, based on a multi-path parallel transmission, forward error correction (FEC) redundancy mechanism and a cost-aware static scheduling strategy, lossless forwarding and instantaneous recovery of audio streams are realized on the premise of not waiting for network feedback and avoiding inter-frame dependence, and high-quality real-time audio transmission service can still be provided in a complex network environment.

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 discloses an anti-packet loss processing method and system for audio and video data. The method is applied to an articulated naturality web, the articulated naturality web comprises two groups of devices, and the two groups of devices are respectively a receiving end device and a transmitting end device. According to the anti-packet-loss processing method and system for the audio and video data, provided by the invention, through a series of steps of packet loss detection, recovery, error concealment and the like, the audio and video data can be recovered to the greatest extent under the condition of data packet loss, the problems of jamming, fuzzy pictures, discontinuous sound and the like are reduced, and the quality of the audio and video is remarkably improved; forward error correction, interpolation compensation and various error hiding methods are carried out by using redundant data, and lost data packets are processed from different angles, so that the definition and fluency of audios and videos and the fidelity of the audios are ensured; meanwhile, through secondary packet loss detection, the situation that the transmission integrity of the audio and video data packets is affected due to the fact that the packet loss phenomenon is not found in time can be effectively avoided.

Disclosed are methods and systems for using softbit decoding techniques in retransmission-based networks for error concealment of packets corrupted by bit-errors. The softbit decoding techniques derive softbit information from multiple corrupted hardbits of the retransmitted packet to aid a softbit decoder in decoding the packet. The approach realizes improved error concealment capability while maintaining a simple system architecture. A retransmission softbit module is inserted between a channel decoder used for channel-decoding and demodulating a compressed packet and the softbit decoder. The retransmission softbit module may derive an accumulated softbit packet from multiple corrupted copies of the packet received from the channel decoder, make bit decisions based on the accumulated softbit packet, and derive reliability information for the bit decisions. The bit decisions may be a majority decision packet (MDP) created using a majority voting scheme. The reliability information and the MDP may be provided to the softbit decoder for decoding.

An apparatus may include one or more processors and a receiver configured to receive first audio data having one or more gain spikes and retransmission of a first copy of the first audio data. The one or more processors may determine a first set of bit positions each having a sensitivity value higher than a threshold value, the sensitivity value indicating a degree of sensitivity of audio quality to bit errors at each bit position, determine that a second set of bit positions, at each of which the first audio data and the first copy have bit values different from each other, include at least one of the first set of bit positions, and modify the first audio data to eliminate a gain spike corresponding to the at least one of the first set of bit positions.

Image series transformation for optimal compressibility is performed with neural upsampling and error resilience. A novel correlation network composed of convolutional layers for feature extraction that extract multi-dimensional features from the image and a channel-wise transformer with attention to capture complex inter-channel dependencies. An angle optimizer enhances compressibility of an image and an error resilience subsystem improves robustness against transmission errors and data loss. The error resilience subsystem applies forward error correction coding, data partitioning based on importance, and embeds error concealment hints. This hybrid approach addresses both local and global features, mitigates compression artifacts, improves image quality, and enhances data integrity during transmission. The correlation network incorporates error correction and concealment techniques during decoding. The model's outputs enable effective image reconstruction, achieving advanced compression while preserving information for accurate analysis.

A method and a decoder for generating concealment audio frame of an audio signal. The method includes performing a frequency domain analysis of a sequence of previously decoded audio signal to obtain a frequency spectrum and identifying peaks in the spectrum. The method further includes estimating a relative energy between the noise spectrum and the complete spectrum, determining an attenuation of the noise spectrum based on the relative energy, and applying the attenuation to the noise spectrum. The method includes applying an inverse transform to time domain on an error concealment spectrum, that includes the peaks and the attenuated noise spectrum.

A method and a decoder for generating concealment audio frame of an audio signal. The method includes performing a frequency domain analysis of a sequence of previously decoded audio signal to obtain a frequency spectrum and identifying peaks in the spectrum. The method further includes estimating a relative energy between the noise spectrum and the complete spectrum, determining an attenuation of the noise spectrum based on the relative energy, and applying the attenuation to the noise spectrum. The method includes applying an inverse transform to time domain on an error concealment spectrum, that includes the peaks and the attenuated noise spectrum.

In various examples, systems and methods are disclosed relating to context-aware error concealment to improve inference accuracy are disclosed. A system can identify a frame of a video stream and determine that the frame comprises corrupted or lost data. The system can generate a corrected frame by applying an error concealment function selected based at least on a location of the corrupted or lost data in the frame and a region of interest in the frame.

Disclosed herein are embodiments of a hearing aid configured to receive a wireless signal including a succession of frames including a first frame including first encoded audio samples, and determine a first codec, perform an error check based on the first frame, and in accordance with a determination that the first frame fails to pass the error check, perform a test.

A method, at a hearing aid, including receiving a wireless signal including a succession of frames including a first frame including first encoded audio samples and determining a first codec, performing an error check based on the first frame, and in accordance with a determination that the first frame fails to pass the error check, performing a test.

An error concealment method and apparatus for a mobile radio is described. A current location value is provided by a spatial location receiver. A signal quality parameter associated with the current location value is retrieved from a database if available. If the signal quality parameter is available, a first error concealment method for a received audio signal is selected and applied dependent on the signal quality parameter value. If the signal quality parameter associated with the current location value is not available, and the received audio signal is corrupted, a second (default) more conservative error concealment method is applied to the received audio signal.

The invention relates to a method and apparatus for time-reversed audio subframe error concealment. According to an embodiment, a decoder generates a spectrum on a subframe basis. An applied window shape of a first subframe of consecutive subframes of the audio signal is a mirrored version of a second subframe of the consecutive subframes. A signal spectrum corresponding to the second subframe is stored. In response to frame loss, a previously generated signal spectrum corresponding to the second subframe is obtained. Peaks of the signal spectrum are detected and the phase of each peak is estimated. A phase adjustment is calculated for each detected peak based on the estimated phase. A phase adjustment is applied to the peak interval of each detected peak to form a phase-adjusted peak interval, and a complex conjugate of the phase-adjusted peak interval is taken to form a time-inverted phase-adjusted peak. The time-inverted phase-adjusted peak intervals are combined with noise components of the spectrum to form a combined spectrum for hiding a first hidden subframe of the audio frame.

The present invention relates to a shallow compression video error concealment method and system based on wavelet transform, belonging to the technical field of coding and decoding, the method comprising: obtaining a shallow compression code stream; in the case where the shallow compression code stream includes multiple slices and the slices are decoded one by one, determining the index size of the current slice and the total number of slices; according to the comparison result of the index size of the current slice and the total number of slices, parsing each slice, parsing the area of ​​each slice, and parsing the sub-data packet of the area of ​​each slice to perform decoding of each slice; and obtaining the error area in the decoded image, reconstructing the pixel point based on the error pixel gradient value and target threshold of the error area. The method realizes the successful decoding of the compressed code stream with packet loss, and reconstructs the error pixel caused by the packet loss. And the decoding problem caused by packet loss is solved without increasing the broadband burden.

The invention relates to context-aware error concealment for improved reasoning accuracy. In various examples, systems and methods related to context-aware error concealment are disclosed to improve reasoning accuracy. The system may identify a frame of the video stream and determine that the frame contains corrupted or lost data. The system may generate a corrected frame by applying an error concealment function selected based on a location of corrupted or lost data in the frame and a region of interest in the frame.

A method for speech-based health analysis, comprising: receiving via a digital transmission channel an input signal related to a recorded speech signal, the input signal comprising at least one feature related to health information; processing the input signal by adapting the input signal for at least partly cancelling at least one effect on a signal path, wherein the signal path comprises path from speech signal output of a person to a device recording the speech signal and / or the digital transmission channel, wherein the at least one effect on the signal path comprises distortions caused to the input signal by at least one of the following: background noise, acoustic environment, recording equipment characteristics, transmission errors and / or error concealments, network handovers, codec, speech enhancement; and providing the processed signal to a health analysis, e.g. to a health analysis system; and an arrangement and a system thereof.

In various examples, systems and methods are disclosed relating to error concealment by replacing a lost video frame region with a chronological predecessor. Network packets including data corresponding to an encoded bitstream of a frame of a video stream can be received. In response to determining that at least one packet of the video stream has been lost, a region of the video frame corresponding to the lost network packet can be replaced with the same region of a previous frame of the video stream.

This application discloses a method, apparatus, device, and medium for intra-frame error recovery of AVS3 keyframes, relating to the field of video encoding and decoding technology. The method includes: acquiring target keyframe data sent by the encoding end; performing integrity detection on the target keyframe data; if missing slices exist in the target keyframe, acquiring the luminance sketch in the image header of the target keyframe; performing error hiding on the target keyframe to obtain corresponding intermediate keyframes; upsampling the target sketch block in the luminance sketch to obtain corresponding upsampled sketch blocks; and fusing the upsampled sketch blocks and the target keyframe blocks in the intermediate keyframes to supplement missing data in the target keyframe, thereby achieving intra-frame error recovery. By fusing the luminance sketch with the intermediate keyframes, the problem of significant deviation between the overall brightness of the reconstructed result and the original content is solved.

Disclosed is a frame error concealment (FEC) method. The method includes: selecting an FEC mode based on states of a current frame and a previous frame of the current frame in a time domain signal generated after time-frequency inverse transform processing; and performing corresponding time domain error concealment processing on the current frame based on the selected FEC mode, wherein the current frame is an error frame or the current frame is a normal frame when the previous frame is an error frame.

A method, a computer readable medium, and an apparatus for audio error concealment are provided. The apparatus may receive a plurality of audio frames. The apparatus may receive a first audio frame after the receiving of the plurality of audio frames. The apparatus may detect a second audio frame being lost in transmission. The second audio frame is transmitted after the plurality of audio frames and before the first audio frame. The apparatus may identify an audio segment within the plurality of audio frames that best matches a reference audio pattern of the plurality of audio frames. The identified audio segment may be received before a last audio frame of the plurality of audio frames. The apparatus may reconstruct the second audio frame based on audio data received subsequent to the identified audio segment.

The application provides a method, system, terminal and medium for realizing video error concealment, wherein an original video is compressed by coding and decoding to form a test set and a training set; frame extraction processing is performed on the test set and the training set, a mask block operation is performed, and a network training set is obtained; a network model is constructed, the network model is trained, and a video error concealment model is obtained; the video frame test set is input into the video error concealment model, and a reconstructed frame is output; a generator of the model uses a Video Swin Transformer network to perform video frame multi-layer feature extraction on the input video frame test set, then different levels of features are fused for reconstruction of a video loss or damaged area, and the reconstructed frame is output. The application solves the problem that the loss or damaged area of a VVC standard compressed video cannot be effectively recovered, and overcomes the disadvantage that a traditional convolutional neural network cannot simultaneously consider parallel execution and long-range time dependency modeling capability.

An error concealment method and apparatus for a mobile radio are described herein. A current position value is provided by a spatial position receiver. If available, a signal quality parameter associated with the current location value is retrieved from a database. If the signal quality parameter is available, a first error concealment method for the received audio signal is selected and applied depending on the signal quality parameter value. If the signal quality parameter associated with the current location value is unavailable and the received audio signal is corrupted, a more conservative second (default) error concealment method is applied to the received audio signal.

A frame error concealment method based on frames including transform coefficient vectors including the following steps: It tracks sign changes between corresponding transform coefficients of predetermined sub-vectors of consecutive good stationary frames. It accumulates the number of sign changes in corresponding sub-vectors of a predetermined number of consecutive good stationary frames. It reconstructs an erroneous frame with the latest good stationary frame, but with reversed signs of transform coefficients in sub-vectors having an accumulated number of sign changes that exceeds a predetermined threshold.

A method and a decoder device of generating a concealment audio subframe of an audio signal are provided. The method comprises generating frequency spectra on a subframe basis where consecutive subframes of the audio signal have a property that an applied window shape of first subframe of the consecutive subframes is a mirrored version or a time reversed version of a second subframe of the consecutive subframes. Peaks of a signal spectrum of a previously received audio signal are detected for a concealment subframe, and a phase of each of the peaks is estimated. A time reversed phase adjustment is derived based on the estimated phase and applied to the peaks of the signal spectrum to form time reversed phase adjusted peaks.

A key-value storage device may perform error-handling on key-value data stored in a memory device. The key-value storage device may be communicatively coupled to a host device that may transmit read commands to retrieve the key-value data stored on the memory device. In response to a read command, the storage device may retrieve the key-value data from the memory device. If during retrieval the storage device identifies that a portion of the key-value data is irretrievable, the storage device may perform an error-handling operation on the key-value data. Depending on a key-value data type, the storage device may perform an error concealment operation and return complete key-value data or a partial error-handling operation and return partial key-value data to the host.

A method of approximating a lost or corrupted multichannel audio frame of a multichannel audio signal in a decoding device is provided. The device may generate a down-mix error concealment frame and transform the frame into a frequency domain to generate a transformed down-mix error concealment frame. The device may decorrelate the transformed frame to generate a decorrelated concealment frame. The device may obtain a residual signal spectrum of a stored residual signal of a previously received multichannel audio signal frame and generate an energy adjusted decorrelated residual signal concealment frame using the residual signal spectrum. The device may obtain a set of multi-channel audio substitution parameters and provide the frames and substitution parameters to an audio synthesis component to generate a synthesized multichannel audio frame. The device performs an inverse frequency domain transformation of the audio frame to generate a substitution frame for the lost or corrupted audio frame.

A key-value storage device may perform error-handling on key-value data stored in a memory device. The key-value storage device may be communicatively coupled to a host device that may transmit read commands to retrieve the key-value data stored on the memory device. In response to a read command, the storage device may retrieve the key-value data from the memory device. If during retrieval the storage device identifies that a portion of the key-value data is irretrievable, the storage device may perform an error-handling operation on the key-value data. Depending on a key-value data type, the storage device may perform an error concealment operation and return complete key-value data or a partial error-handling operation and return partial key-value data to the host.

A method and decoder device for generating hidden audio subframes of an audio signal are provided. The method includes generating a spectrum on a subframe basis, wherein consecutive subframes of the audio signal have the following characteristics: an applied window shape of a first subframe in the consecutive subframes is a mirrored version or a time-reversed version of a second subframe in the consecutive subframes. For the hidden subframes, peaks of a signal spectrum of a previously received audio signal are detected, and a phase of each peak is estimated. A time-reversed phase adjustment is derived based on the estimated phase, and the time-reversed phase adjustment is applied to the peaks of the signal spectrum to form time-reversed phase-adjusted peaks.

An error concealment method and apparatus for a mobile radio is described. A current location value is provided by a spatial location receiver. A signal quality parameter associated with the current location value is retrieved from a database if available. If the signal quality parameter is available, a first error concealment method for a received audio signal is selected and applied dependent on the signal quality parameter value. If the signal quality parameter associated with the current location value is not available, and the received audio signal is corrupted, a second (default) more conservative error concealment method is applied to the received audio signal.