18results about How to "Reduce decoding time" patented technology

The invention provides a decoding and coding method, device and equipment, and the decoding method comprises the steps: decoding a first code stream of a current image block, and obtaining a coefficient hyper-parameter feature of the current image block; for each stage sub-block of the current image block, determining a probability distribution parameter of the stage sub-block based on the coefficient hyper-parameter feature, and decoding a second code stream of the current image block based on the probability distribution parameter to obtain a residual feature of the stage sub-block; based on a mean value prediction network, determining mean value features of the sub-blocks in the stage; determining a reconstruction feature of the stage sub-block based on the mean feature of the stage sub-block and the residual feature of the stage sub-block; performing feature aggregation on the reconstruction features of the sub-blocks in each stage to obtain the reconstruction features of the current image block; a reconstructed image block of the current image block is determined based on the reconstruction feature of the current image block. Through the scheme of the invention, the coding performance and the decoding performance are improved.

The invention discloses a video decoding and real-time playing method in a QT environment. The method comprises the following steps: S1, creating a compiling environment; s2, an ffmpeg pull stream and a decoding resource are initialized; s3, creating a pull stream main thread; s4, decoding the data packet object obtained by stream pulling; s5, carrying out format conversion on the decoded image frame; s6, obtaining the image frame after format conversion and displaying the image frame in real time; and S7, releasing decoding channel resources. The soft decoding method is adopted, the decoding time is effectively shortened, the RTSP video transmission protocol is adopted to obtain the video stream, the playing delay is effectively shortened, and the video playing fluency is guaranteed.

The invention discloses a real-time video playing method in a QT environment. The method comprises the following steps: S1, creating a compiling environment; s2, formulating a transmission service rule; s3, an ffmpeg pull stream and a decoding resource are initialized; s4, creating a pull stream main thread; s5, decoding the data packet object obtained by stream pulling; s6, carrying out format conversion on the decoded image frame; s7, obtaining the image frame after format conversion and displaying the image frame in real time; and S8, releasing decoding channel resources. The soft decoding method is adopted, the decoding time is effectively shortened, the RTSP video transmission protocol is adopted to obtain the video stream, the playing delay is effectively shortened, and the video playing fluency is guaranteed.

The invention discloses a decoding method based on a video distribution service. The decoding method comprises the following steps: S1, formulating a video distribution service rule; s2, creating a compiling environment; s3, decoding resources are initialized; s4, acquiring video data of the video distribution service; s5, decoding the video data; s6, carrying out format conversion on the decoded image frame; s7, obtaining the image frame after format conversion and displaying the image frame in real time; and S8, releasing decoding channel resources. According to the invention, a soft decoding method is adopted, the decoding time is effectively reduced, the video stream is acquired by adopting the video distribution rule, the playing delay is effectively reduced, and the fluency of video playing is ensured.

The invention provides a decoding method and a decoding system based on grid ROI setting. The decoding method comprises the following steps: acquiring a row number M and a column number N corresponding to a grid ROI; acquiring a bar code image; uniformly dividing the barcode image into M * N ROIs (Region Of Interest); and performing multi-thread parallel decoding on the image information corresponding to the M * N ROIs. According to the method, the row number M and the column number N corresponding to the grid ROI are obtained, the row number M and the column number N are consistent with the row number and the column number of the materials distributed at regular positions on the production line, the bar code image is uniformly divided into the M * N ROIs, and the bar codes in the M * N ROIs are subjected to multi-thread parallel decoding, so that the ROI region is simple to draw and is not easy to make mistakes, the decoding accuracy is ensured, and the decoding efficiency is improved. And the decoding time is effectively saved, and the decoding efficiency is improved.

The application discloses a real-time video playing method in QT environment, which comprises the following steps: S1, creating a compiling environment; S2, making a transmission service rule; S3, initializing ffmpeg stream pulling and decoding resources; S4, creating a stream pulling main thread; S5, decoding a data packet object obtained by stream pulling; S6, converting a decoded image frame; S7, obtaining the converted image frame and displaying in real time; and S8, releasing decoding channel resources. The application adopts a soft decoding method, effectively reduces decoding time, simultaneously adopts an RTSP video transmission protocol to obtain a video stream, effectively reduces playing delay, and guarantees video playing fluency.

This application provides an encoding and decoding method and related apparatus for non-volatile memory. The encoding method uses the least common multiple of the primitive polynomial of the primitive elements of a finite field and its inverse polynomial as the generator polynomial. The decoding method includes: reading the received sequence and calculating its initial syndrome; if the initial syndrome is not 0, an error exists; adjusting the value of each bit data to obtain two flipped syndromes: a first flipped syndrome and a second flipped syndrome; if both the first and second flipped syndromes are 0, or the product of the first and second flipped syndromes is 1, then it is determined that the bit will be flipped. This application can decode bit by bit in parallel according to the flipped syndrome. Compared with the BCH code error correction scheme, the generator polynomial is different, avoiding high-order power operations of finite field elements during decoding, reducing decoding complexity and decoding delay, and meeting the requirements of fast decoding.

The invention discloses a decoding method compatible with multiple code streams. The decoding method comprises the following steps: S1, transplanting ffmpeg to an acceleration module platform; s2, setting an initialization resource calling interface; s3, using an ffmpeg dynamic library to obtain a complete compressed image data packet containing a parameter frame; s4, screening and filtering the complete code stream; s5, performing hard decoding on the screened and filtered code stream; s6, setting an error callback function to check a decoding state; s7, returning the decoded image to the upper application through an interface function; and S8, releasing decoding channel resources. A soft decoding method is adopted to form a complete data packet containing an image frame and a parameter frame, and then a hard decoding module of a chip is used to complete the decoding process, so that the decoding time is effectively shortened.

This disclosure provides embodiments of a video encoding / decoding and display method, apparatus, electronic device, and computer-readable medium. One specific implementation of the method includes: splitting each video frame to be encoded to obtain a set of video frame blocks; determining a set of video frame block encoding channels that meet interrupt triggering conditions; performing key video frame block peak shifting processing on each video frame block to be encoded to obtain a set of key video frame encoding blocks and a set of channel delay encoding time differences; performing video encoding on each video frame block to be encoded to obtain a set of video frame block channel bitstreams; determining the decoding and splicing threads for the video frame block channel bitstream set to obtain a set of decoding and splicing threads; performing video frame block decoding and splicing on the video frame block channel bitstream set to obtain a decoded video; and performing video frame display processing on the decoded video. This implementation can improve the balance of the bitstream after video encoding, improve the stability and real-time performance of transmitted video, and reduce video transmission latency.

The application relates to the technical field of motor control, and particularly discloses a resolver software decoding method based on an MCU and a device thereof, the decoding device comprising an MCU, an amplification circuit, two conditioning circuits, two multipliers and two low-pass filters; the MCU comprises a timer, a DAC module, a first ADC module and a second ADC module; the DAC module is connected with a primary side winding of a resolver, a first input end of a first multiplier and a first input end of a second multiplier through the amplification circuit; two secondary side windings of the resolver are connected with a second input end of the first multiplier and a second input end of the second multiplier; and an output end of the first multiplier is connected with the first ADC module through a first filter and a first conditioning circuit, and an output end of the second multiplier is connected with the second ADC module through a second filter and a second conditioning circuit. The application can reduce the cost of a resolver shaft angle calculation system and realize high-precision shaft angle calculation.

The application discloses a video decoding real-time playing method in QT environment, which comprises the following steps: S1, creating a compiling environment; S2, initializing ffmpeg stream pulling and decoding resources; S3, creating a stream pulling main thread; S4, decoding a data packet object obtained by the stream pulling; S5, carrying out format conversion on the decoded image frame; S6, obtaining the image frame after the format conversion and displaying in real time; and S7, releasing the decoding channel resources. The application adopts a soft decoding method, effectively reduces the decoding time, simultaneously adopts an RTSP video transmission protocol to obtain a video stream, effectively reduces playing delay, and guarantees the fluency of video playing.

The present invention relates to a decoding method, device, decoder and medium for adaptive threshold adjustment. The method comprises: initializing soft information and setting a threshold; iteratively updating the check node based on the threshold according to the received soft information to generate check information and classification results; in the iterative process, adaptively adjusting the threshold according to the classification result, and judging whether to update the check node according to the classification result; the updated check node transmits the check information to the connected variable node, and the variable node is updated accordingly according to the received check information to obtain the variable node update result; performing decoding judgment according to the variable node update result, if the judgment fails, continuing the iterative processing until the preset number of iterations is reached, and outputting the decoding result. The method provided by the present invention can reduce the computational complexity, speed up the decoding speed, and improve the robustness of the decoding performance.

The invention provides an error correction method, a memory storage device and a memory control circuit unit. The error correction method comprises the following steps: counting a first decoding rate of a first error correction process, wherein the first error correction process comprises a plurality of decoding operations executed based on a first sequence; and switching the first error correction process to a second error correction process in response to the first decoding rate being less than a first threshold, the second error correction process including a plurality of decoding operations performed based on a second order, wherein the decoding capability of the first decoding operation indicated by the second sequence is superior to the decoding capability of the first decoding operation indicated by the first sequence.

This invention relates to the field of QR code technology, specifically to a character code generation method, decoding method, and apparatus. The method includes: acquiring text to be encoded and converting it into information to be encoded through an encoding mode; creating a scanning area and filling the scanning area with target text, wherein the version of the scanning area is determined based on the size of the target text and the size of the information to be encoded; splitting the information to be encoded into one or more data modules; matching candidate filling positions for each data module by traversing the outline formed by the strokes of the target text according to the size of the split data modules; and filling each data module into its corresponding filling position after a successful match. This invention provides a QR code encoding and decoding method that can be recognized by both machines and the human eye. Each character has a fixed outline path formed by strokes, and by changing the control points on the outline to embed encoding information, machine recognition and human eye recognition are combined.

The invention discloses a decoding method for solving overtime memory overflow. The decoding method comprises the following steps: S1, transplanting ffmpeg to an acceleration module platform; s2, setting an initialization resource calling interface; s3, using an ffmpeg dynamic library to obtain a complete compressed image data packet containing a parameter frame; s4, performing hard decoding based on an acceleration module; s5, setting an error callback function to check a decoding state; s6, returning the decoded image to the upper application through an interface function; and S7, releasing decoding channel resources. A soft decoding method is adopted to form a complete data packet containing an image frame and a parameter frame, and then a hard decoding module of a chip is used to complete the decoding process, so that the decoding time is effectively shortened.

An embodiment of the present invention provides a point cloud data processing method, device, storage medium and electronic device, wherein the method includes: determining static geometrically encoded point cloud data containing spatial area information of a 3D scene, wherein the static geometrically encoded point cloud data is represented by point cloud project data; decoding partial project data corresponding to a partial spatial area of ​​the 3D scene in the static geometrically encoded point cloud data; rendering the partial spatial area of ​​the 3D scene according to the decoded data, which can solve the problem in the related art that it is usually necessary to traverse the complete point cloud data before identifying the partial point cloud data required by the user, resulting in low parsing efficiency and long time consumption. The required partial project data is determined according to user needs, so that the required partial project data can be obtained without traversing the complete point cloud data, thereby improving decoding efficiency, shortening decoding time, and shortening the user's rendering waiting time.

The invention provides a privacy protection verifiable matrix multiplication method and system with a lower critical dimension, and relates to the technical field of privacy protection. The method comprises the following steps: a user generates public parameters and a key; generating a decoding key, an evaluation key and a verification key according to the public parameters, the key and the function family; generating a ciphertext, a decoding key and a verification key of the matrix according to the key and the matrix; the service provider obtains an encrypted calculation result according to the evaluation key and the ciphertext; the user verifies the correctness of the encrypted calculation result according to the evaluation key and the evaluation key; and if the verification result is correct, the user inputs a decoding key, the decoding key and the encrypted calculation result, and decodes the encrypted calculation result to obtain a final calculation result. The improved private LHE provided by the invention has the advantages that the decryption realization is simpler, the reduction of critical dimensions is facilitated, and meanwhile, the ProbGen time is reduced due to the shorter ciphertext, and the initialization burden is relieved.

The invention relates to a burst error list decoding method of an RS code based on G-FFT. The burst error list decoding method comprises the following steps: initializing parameters, constructing the RS code, folding a receiving vector, carrying out G-IFFT conversion, decoding an IRS code matrix obtained by conversion, carrying out G-FFT conversion, unfolding an obtained inverse matrix, and carrying out burst error screening to generate an output sequence. According to the invention, the problem of burst error list decoding of RS codes is converted into the problem of burst error list decoding of IRS codes by using G-FFT, so that the error correction performance of the RS codes is enhanced. According to the method, the limitation of the prior art is broken through, the burst error can be corrected under the condition of reaching the Single boundary, and when the code length is n, the decoding complexity of the method is only quasi-linear time O (nlogn). The improvement significantly improves the decoding efficiency and reliability, and has important practical application value for a high-speed communication system.