286results about How to "Improve coding efficiency" patented technology

The invention discloses an audio and video joint coding and decoding method based on generative artificial intelligence. The coding comprises the following steps: extracting various modal features from an audio signal and a video; fusion is carried out in cross-modal attention; task identification: firstly identifying a current task type, determining the task type, and analyzing specific requirements of the task by a system; dynamic self-adaptive weight distribution is carried out; and fusing the features, namely fusing the multi-modal features distributed with different weights. The audio and video joint coding method has the advantages that audio and video feature extraction, video feature extraction and AI-based generation technologies are applied to audio and video joint coding for the first time, and the problems that when video coding and decoding are conducted through a traditional method, compression efficiency is low, and the pursuit of higher quality cannot be met are solved. Meanwhile, on the basis of a generation type coding and decoding mode, the style and quality can be flexibly adjusted according to the personal requirements of the user.

The invention provides a chip testability design program code generation device and method, and the device comprises a chip design file processing module which is used for receiving a chip design file; the testability design circuit generating and marking module is used for adding a test point and an observation point in a circuit of the chip according to a testability design rule of the chip; the resource dynamic calculation module is used for dynamically generating a pseudo netlist according to the flattening rule; the virtual device modeling module is used for modeling a virtual device and recording an FPGA model generated when the pseudo netlist is generated; the simulation and testability design collaborative optimization module is used for generating a simulation code of the verification platform according to the program code completion degree of the chip design file and performing simulation; and the design data sharing module is used for storing the shared chip design file. The invention further provides a method for implementing the device. According to the method, the efficiency of designing the chip test circuit can be improved, and the flexibility and usability of collaborative design of tools in different design stages of the chip are improved.

The invention relates to an underground video coding method and device, and the method comprises the steps: obtaining to-be-coded video data based on the perception capability evaluation and video reconstruction of an underground video stream; obtaining a time-space domain saliency model based on the human eye visual perception structure; and carrying out bit allocation and code rate allocation on the to-be-coded video data based on the time-space domain saliency model, and determining coded data corresponding to the underground video stream. The underground video is subjected to lossless reconstruction based on a human visual perception mechanism, so that the visual redundancy is removed, the code rate is reduced, and the underground bandwidth is relieved; bit allocation and code rate allocation are performed on the to-be-coded video data through the time-space domain saliency model, so that the coding efficiency and the visual experience degree are remarkably improved, and the method has wide application value.

The invention provides a video privacy protection method, a video playing method and related devices. The video privacy protection method comprises the following steps: acquiring an original encryption parameter and an original video; for each original video frame, determining a privacy area of the original video frame, and performing image blurring processing on the privacy area of the original video frame by adopting a preset blurring algorithm to obtain a blurred video frame; taking the fuzzy video frame as input data of a base layer in a target encoder, taking the original video frame as input data of an enhancement layer in the target encoder, and performing video encoding by adopting the target encoder to obtain first video encoding data; encrypting enhanced data in the first video coding data according to the original encryption parameter to obtain second video coding data; and generating the privacy protection video based on the second video coding data. According to the method, the expandability of the H.265 coding technology and the password technology are combined, and the two aspects of high efficiency and reversible reduction can be considered at the same time.

The invention provides an audio coding method and device, equipment, a storage medium and a computer program product. The method comprises the following steps: performing first-level feature extraction processing on an audio signal to obtain a first-level signal feature; for the ith hierarchy in the N hierarchies, splicing processing is carried out on the audio signals and the signal features of the (i-1) th hierarchy to obtain spliced features, feature extraction processing of the ith hierarchy is carried out on the spliced features to obtain the signal features of the ith hierarchy, N and i are integers larger than 1, and i is smaller than or equal to N; the i is traversed, the signal feature of each level in the N levels is obtained, and the data dimension of the signal feature is smaller than the data dimension of the audio signal; respectively encoding the signal feature of the first level and the signal feature of each level in the N levels to obtain a code stream of the audio signal at each level; according to the invention, the audio coding efficiency can be improved and the audio coding quality can be ensured.

The invention provides a video encoding method and device, electronic equipment and a non-transient computer readable storage medium. The video encoding method comprises the steps of performing motion estimation and motion compensation on a current block; calculating a block error between the expanded block of the current block and the expanded block of the motion compensation block; determining a filtering weight based on the block error; performing time domain filtering on the current block by performing weighted summation on the current block and the motion compensation block based on the determined filtering weight; and encoding the current block based on the time domain filtering result. According to the invention, the relation between the block-level filtering weight factor and the surrounding pixels can be considered in the time domain filtering process based on motion compensation, and the surrounding pixels are utilized to correct the result of the block-level error term in the time domain filtering weight, so that the time domain filtering effect is improved, and the coding efficiency is improved.

The wood processing laser marking machine comprises a supporting table, four supporting columns are fixedly connected to the supporting table, a loading frame is fixedly connected to the upper ends of the four supporting columns, a pushing opening is formed in a pushing plate in a penetrating mode, and the pushing plate abuts against the bottom of the loading frame and the supporting columns in a sliding mode. A laser coding machine is installed on the loading frame, two deviation rectifying plates capable of relatively moving are slidably connected to the supporting table, and the pushing plate slides on the supporting table in a reciprocating mode so that wood in the loading frame can be intermittently conveyed to the position between the two deviation rectifying plates. And the wood can be clamped and rectified through the two rectifying plates so that the wood can directly face the laser coding machine, the wood is conveyed to the position between the two rectifying plates again, and the two rectifying plates are opened. The automatic feeding and discharging device can achieve automatic feeding and discharging of wood, manual participation is not needed, the coding efficiency and precision are greatly improved, and the labor amount of workers is reduced.

The invention discloses a joint optimization method for a joint photographic experts group (JPEG) quantization table and a truncation position based on rate distortion, relates to the technical field of JPEG coding optimization, and solves the technical problems that in a JPEG compression scheme, improvement of coding efficiency caused by joint optimization by using the quantization table and the truncation position is neglected, and the optimal quantization table and the optimal truncation position are difficult to find. According to the method, joint optimization is carried out on a quantization table and a truncation position of the JPEG by combining a JPEG compression method from the perspective of evolutionary computation, a strategy that the truncation position is fixed when the quantization table is optimized, a strategy that the quantization table is unchanged when the truncation position is optimized, an estimation method for designing fitness evaluation and a method based on rate-distortion optimization are respectively carried out, and the quantization table and the truncation position are optimized. The optimal quantization table and the truncation position can be effectively found, and the corresponding truncation position is optimized while multiple groups of quantization tables are generated in the optimization process; through joint optimization of the quantization table and the truncation position, image data can be compressed more effectively, redundant information is reduced, and therefore coding efficiency is improved.

The embodiment of the invention discloses a time domain extensible video coding method, system and device and a storage medium. According to the technical scheme provided by the embodiment of the invention, the hierarchical structure of the to-be-coded picture group is determined, the hierarchical structure is provided with a plurality of hierarchies from high to low according to the set hierarchical rule, each hierarchy comprises a corresponding number of image frames, and the image frame of the higher hierarchy takes the image frame of the lower hierarchy as the reference frame; the image frame at the lowest level takes the first frame of the picture group to be coded as a reference frame; under the condition that time domain scalable video coding is triggered, screening out the image frames of at least one highest level in the to-be-coded picture group, and coding the residual image frames in the to-be-coded picture group; and storing the coded image frame in an image cache, and selecting a reference frame of the to-be-coded image frame from the image cache according to the hierarchical structure, so as to code the to-be-coded image frame based on the selected reference frame. By adopting the technical means, the transmission code rate and CPU (Central Processing Unit) overhead of the extensible video coding can be saved.

The invention relates to the technical field of data processing, in particular to a rail train fusion host-oriented data integration method, which comprises the following steps of: acquiring and preprocessing multi-dimensional time sequence data when a rail train runs; determining a target dimension between a target shift and a non-target shift based on the preprocessed multi-dimensional time series data, obtaining corresponding specificity through the target dimension, constructing a target dimension set, obtaining a weight of each dimension of the target shift, and determining a non-standard factor of the target shift; determining a first attention degree and a second attention degree of each initial time period based on the non-standard factors and the multi-dimensional time sequence data, and constructing an attention degree sequence of the target shift from the starting point to the end point by combining the first attention degrees and the second attention degrees to obtain a plurality of optimal time periods and corresponding attention degrees; and carrying out parallel coding on all dimension time sequence data corresponding to the optimal time period, and taking the attention corresponding to the optimal time period as a label to complete data integration.

The embodiment of the invention provides an image data processing method and image data processing equipment, and relates to the technical field of data processing, the method is applied to the image data processing equipment, and the method comprises the following steps: obtaining decoding data of each frame obtained by decoding a target code stream; executing auxiliary coding processing; wherein the auxiliary encoding processing comprises the following steps: calling a target encoder module to encode the decoded data of each frame according to a reference code stream format to obtain the processing of a reference code stream; the coding mode information used when any frame is coded into the reference code stream format is the same as the coding mode information used when the frame is coded into the target code stream format; determining first coding mode information corresponding to each frame to obtain reference coding mode information of each frame; and encoding the decoded data of each frame according to the obtained reference encoding mode information to obtain encoded image data of each frame in a target code stream format. According to the scheme, the efficiency of the code stream coding process can be improved.

The invention discloses a projection parallel single-pixel measurement method based on time multiplexing coding, which comprises the following steps of: circularly projecting a sequence diagram consisting of a full-white pattern, a full-black pattern and a four-step phase shift substrate fringe pattern to an object to be measured by using a projector, and synchronously shooting the object to be measured by using a camera; then, background light intensity and spectrum coefficients are calculated for a full white pattern and a full black pattern which are close to each other on the projection sequence; and finally, Fourier single-pixel imaging is performed on image pixels shot by all cameras in parallel. According to the time multiplexing parallel single-pixel coding method, the coding pattern is multiplexed on the time sequence while the effectiveness of parallel single-pixel measurement is ensured, so that the number of projection patterns can be reduced, and the coding efficiency is greatly improved.

The invention provides a double-stream video encoding and decoding method, device and equipment and a storage medium, relates to the technical field of video encoding and decoding, and solves the problem that the video real-time requirement cannot be met due to low efficiency when an image with an Alpha channel is encoded in the related technology. According to the scheme, the video image is asynchronously collected to separate the Alpha channel information and the RGB channel information, and the Alpha channel information and the RGB channel information are asynchronously coded to generate different code streams, so that the coding requirement of a transparent image layer synthesis scene is supported; and asynchronous synthesis and artifact elimination processing are carried out on the received code stream at the decoding end side to recover the original video image, so that the asynchronous coding scheme adapted to the coding end side can effectively improve the coding efficiency compared with a synchronous coding scheme, and the coding efficiency is improved. Therefore, the actual system frame rate can reach the maximum frame rate in the current scene, and the coding transmission application of the video data is facilitated.

The present invention discloses an image encoding / decoding method and device. The image decoding method according to the present invention includes: obtaining symmetric motion vector difference mode available information from a bitstream; obtaining first prediction direction zero motion vector difference information from a bitstream; obtaining symmetric motion vector difference mode information of a current block from a bitstream based on the symmetric motion vector difference mode available information and the first prediction direction zero motion vector difference information; obtaining first prediction direction reference picture index information, second prediction direction reference picture index information and first prediction direction motion vector difference value based on the symmetric motion vector difference mode information; and generating a prediction block of the current block by using at least one of the first prediction direction reference picture index information, the second prediction direction reference picture index information and the first prediction direction motion vector difference value, wherein the step of obtaining the reference picture index information of the first prediction direction, the reference picture index information of the second prediction direction and the motion vector difference value of the first prediction direction is obtained by deriving from the bitstream instead of decoding the bitstream when the symmetric motion vector difference mode information of the current block indicates the symmetric motion vector difference mode.

The present application discloses a joint stereo audio coding and decoding method and device, belonging to the field of audio coding and decoding technology. The method mainly includes: encoding the Bluetooth audio of the left and right channels to the time domain noise shaping module according to the standard Bluetooth coding steps, respectively, to obtain the left channel spectral coefficient and the right channel spectral coefficient corresponding to the left and right channels respectively; jointly encoding the left channel spectral coefficient and the right channel spectral coefficient, to obtain the left channel joint coding data corresponding to the left channel and the right channel joint coding data corresponding to the right channel; and performing the remaining coding steps on the left channel joint coding data and the right channel joint coding data according to the standard Bluetooth coding steps, respectively, to obtain the code streams corresponding to the left channel and the right channel respectively. Under the premise of ensuring the sound quality, the present application makes full use of the correlation between the stereo dual channels, improves the efficiency of stereo coding, greatly reduces the bit rate, saves the Bluetooth air bandwidth, thereby reducing interference and improving the user experience.

The present disclosure provides a video frame filtering method and device, electronic equipment and storage medium, belonging to the technical field of computer. The method comprises: for any video frame in a video frame queue, determining a plurality of reference video frames of the video frame from the video frame queue; in the case that the number of idle memory in the idle memory pool is not less than the first number, covering the data in the first memory in the idle memory pool with the video frame and at least one reference video frame, the idle memory in the idle memory pool being used to store the encoded video frames in the video frame queue in a pyramid structure; filtering the video frame based on the video frame in the first memory and the video frame in the second memory, the second memory being used to store at least one reference video frame in a pyramid structure. The above scheme can reduce the additional memory overhead by multiplexing the idle memory in the idle memory pool, avoiding frequent memory allocation, and thus improving the encoding efficiency of the video.

According to the present invention, provided are a video decoding method and apparatus, and a video encoding method and apparatus: obtaining chroma intra prediction mode information on a current chroma block at the time of video encoding and decoding processing; when the chroma intra prediction mode information indicates a DM mode, determining a luma block including a luma sample corresponding to a chroma sample located at a right lower position of a center of a current chroma block; determining a chroma intra prediction mode of the current chroma block based on the determined intra prediction mode of the luma block; and performing intra prediction on the current chroma block based on the determined chroma intra prediction mode.

The embodiment of the invention provides a video coding method and device, equipment, a storage medium and a program product, and the method comprises the steps: obtaining a to-be-coded video frame sequence and a corresponding video frame rate, and enabling the video frame sequence to comprise video frames; in the process of encoding the video frames, under the condition that it is detected that the currently encoded video frame does not contain a face region and the video frame rate is greater than a set frame rate threshold, determining whether a to-be-evaluated video frame within a preset duration after the currently encoded video frame is a static frame, and calculating the proportion of a skin region in the to-be-evaluated video frame; and when the to-be-evaluated video frame is a static frame and the proportion of the skin area is in a preset threshold interval, coding the video frame detected as the static frame after the to-be-evaluated video frame based on the gradually increasing minimum quantization parameter value. According to the scheme, the video coding rate is saved under the condition that the subjective video quality is hardly lost, the coding efficiency is improved, and the video watching experience of a user is optimized.

The embodiment of the application discloses a kind of based on wavefront parallel processing to the method, device, storage medium and computer equipment of image H.264 encoding, it is related to image processing field.The application is processed adjacent macroblock line by double encoder parallelly, and respectively first buffer and second buffer are written to encoding bit stream.In macroblock line encoding completion, first buffer remaining bit stream and entropy encoding remaining bit stream are merged in real time, if the length after merging is less than 8 integer multiples, then appropriate bit stream is dynamically taken from the head of second buffer and spliced, complete code stream in line with H.264 standard is generated and outputed.After encoding is completed, the minimum splicing length is used as the offset of second buffer, continue to output byte stream, and the encoding of next macroblock line is started.The application only needs double macroblock line buffer, significantly improves the encoding speed, reduces memory occupation, and does not need to modify decoder, and compatibility is strong.

The invention relates to an image encoding / decoding method, a storage medium, and a data transmission method. An image decoding method performed by a decoding device according to the present document comprises the steps of: deriving prediction samples of a first sample and a second sample of a current block on the basis of BDPCM-related information on the current block and neighboring samples of the current block; deriving a residual sample of the first sample and the second sample based on the residual coefficient of the first sample and the modified residual coefficient of the second sample; and storing, as the intra prediction mode of the current block, an intra prediction mode in the prediction direction of the current block derived on the basis of the BDPCM direction flag.

The invention relates to an image pre-division method based on a multi-layer multi-motion search result, and belongs to the technical field of video coding. The method comprises the steps that an original image and a prediction search image are acquired, and according to the original image and the prediction search image, motion information of the original image is obtained through multi-layer multi-time motion search; obtaining a video sequence and extracting to obtain an image frame set, coding and extracting features of the image frame set to obtain an image pre-division data set; training and testing according to the image pre-division data set through a decision tree algorithm to obtain an image pre-division decision tree; and obtaining a current image frame, extracting current image motion information through the multi-layer multi-time motion search, and obtaining a current image pre-division state through the image pre-division decision tree according to the current image motion information, thereby assisting an encoder in encoding, accelerating the process of determining the encoding block division form, and improving the encoding efficiency. The calculation consumption of the encoder is reduced, and efficient and accurate image pre-division is realized.

The utility model discloses spring character spraying equipment, which relates to the technical field of spring processing equipment and comprises a rack, a conveying belt assembly and a plurality of code spraying assemblies are arranged on the rack; the conveying belt assembly comprises a conveying belt and a plurality of containing stations used for containing springs, and the containing stations are evenly arranged on the conveying belt. The multiple code spraying assemblies are sequentially arranged on one side of the stroke of the conveying belt. According to the utility model, the plurality of placing stations are arranged on the conveying belt, when the spring code spraying device is used, the springs are sequentially placed at the plurality of placing stations, the conveying belt conveys the placing stations with the springs to the other side, and in the conveying process, the plurality of code spraying assemblies on one side of the stroke of the conveying belt spray codes on the passing springs in sequence; therefore, code spraying processing is continuously carried out on the spring, and the code spraying efficiency of the spring is improved.

The utility model provides a packing box surface code spraying device which comprises a conveying assembly supported on the ground through supporting legs, the top of the conveying assembly is provided with a code spraying assembly and a discharging assembly, the conveying assembly comprises two symmetrically-arranged fixing plates, the opposite sides of the two fixing plates are rotationally connected with two conveying rollers through rotating shafts, and the two conveying rollers are arranged on the conveying assembly. The outer walls of the two conveying rollers are in transmission fit with the same conveying belt, the end of one conveying roller is fixedly connected with a first motor through a coupler, and the first motor is fixed to the outer wall of the conveying assembly through bolts. According to the utility model, the plurality of groups of material taking assemblies are arranged, the box bodies, the suckers and the hollow cylinders in the material taking assemblies are conveyed to the blanking assembly by utilizing the conveying assembly, and one packaging box positioned at the bottom of the blanking assembly can be drawn out and continuously conveyed to the code spraying assembly for code spraying, so that the packaging boxes can be continuously conveyed at equal intervals; and the code spraying efficiency can be improved while the code spraying effect consistency is ensured.

The embodiments of the present application provide a video decoding method, device and electronic device. The video decoding method includes: performing entropy decoding processing on the coding block of the video image frame to obtain the quantization coefficient block of the residual data corresponding to the coding block; performing inverse quantization processing on the quantization coefficient block to obtain an inverse quantization coefficient matrix; performing rotation processing on the inverse quantization coefficient matrix and rearrangement processing on some coefficients to obtain a processed coefficient matrix; generating the residual data according to the processed coefficient matrix. The technical solution of the embodiments of the present application can effectively improve the efficiency of video coding.

The utility model belongs to the technical field of heat insulation strip processing equipment, and particularly discloses a guide device for code spraying of a heat insulation strip, which comprises a bracket, a code spraying device, a code spraying device and a code spraying device, the fixing seat is installed at the upper end of the support, a plurality of carding mechanisms are installed in the fixing seat at equal intervals, each carding mechanism comprises two fixing plates fixed to the inner top and the inner bottom of the fixing seat respectively, and a plurality of carding rods are obliquely arranged between the two fixing plates; according to the utility model, the carding mechanism is used for performing 45-degree inclined carding on the extruded disordered heat insulation strips, and the obliquely arranged carding rods are used for conveniently tiling and pulling the carded heat insulation strips through the traction mechanism in sequence, so that the heat insulation strips can be tidily tiled and enter code spraying equipment for code spraying operation; the thermal insulation strip is prevented from being pulled apart due to winding or knotting, and the code spraying efficiency of the thermal insulation strip is improved to a certain extent.

The embodiment of the invention discloses a video coding method and device, electronic equipment and a computer readable medium. A specific embodiment of the method comprises the following steps: acquiring a video; for each frame of image, determining an average gradient value; in response to the fact that the average gradient value is not lower than a first threshold value, determining a motion vector precision mode as a first mode; in response to the condition not higher than the first threshold and not lower than a second threshold, determining that the motion vector precision mode is a second mode; in response to not higher than the second threshold, determining the motion vector precision mode as a third mode; obtaining each coding unit; determining a self-adaptive motion vector precision tool; setting a motion vector precision range; performing encoding processing on each encoding unit to generate encoding information; and determining each piece of coding information as video coding information. According to the embodiment, the overall characteristics of the image are utilized, so that the selection range of the motion vector precision is more reasonable, the coding efficiency is improved, the consumption of computing resources is reduced, and the overall performance of video coding is improved.

The application provides a video coding quantization method, device, equipment and computer readable storage medium. The method comprises the following steps: obtaining a to-be-coded video frame, performing block processing and transformation processing on the to-be-coded video frame to obtain transformed video frame data; obtaining frame attribute information of the to-be-coded video frame; determining a quantization mode of the to-be-coded video frame based on the frame attribute information of the to-be-coded video frame, wherein the quantization mode is one of dependent quantization and independent quantization, wherein the dependent quantization needs to depend on the quantization result before the current to-be-quantized coefficient, and the independent quantization does not need to depend on the quantization result before the current to-be-quantized coefficient; and performing quantization processing on the transformed video frame data based on the quantization mode of the to-be-coded video frame to obtain a quantization result. Through the application, the quantization mode can be determined based on the frame attribute information of the video frame, and the quantization flexibility is improved.

The present disclosure relates to a coding method, device, electronic equipment and storage medium. The decoding method comprises: writing a motion vector index corresponding to a target motion vector, an offset direction index corresponding to a target offset direction, an offset step index corresponding to a target offset step, and a multi-function index into a coding bitstream corresponding to an image frame; the offset direction index is used to indicate that the offset direction is a horizontal X-axis direction or a vertical Y-axis direction; wherein, in the case that the prediction direction of the current coding unit is bidirectional, the multi-function index is used to represent a candidate coding unit index; in the case that the prediction direction of the current coding unit is unidirectional, the multi-function index is used to represent the positive or negative direction of the X-axis or Y-axis in the offset direction. The method can effectively reduce the influence of MMVD optimization on decoder parallelism and improve decoding efficiency.

The present invention relates to a video signal processing method and device and, more specifically, to a video signal processing method and device for encoding or decoding a video signal.