60results about How to "Avoid coding" patented technology

A method, program product and apparatus for encoding a scalable bit stream from the binarization results of a video sequence by selectively encoding syntax elements and avoiding redundancy in coding. The result is a decrease in the size of the compressed bit stream of an enhancement layer. One method includes determining whether a skipping flag in the base layer macro block of the video data is set, and encoding an enhancement layer macro block of the video data, corresponding to the base layer macro block, with a skipping flag only if the base layer macro block skipping flag is set. Another method includes determining which of a plurality of blocks in a base layer macro block contain zero coefficients, generating a coded block pattern (CBP) of an enhancement layer macro block, where the CBP includes a number of digits equal to the number of blocks in said base layer macro block containing only zero coefficients, and then encoding the CBP of the enhancement layer. Yet another method includes encoding a CBP value of a base layer macro block and differentially encoding a CBP value of an enhancement layer macro block relative to the CBP of the base layer macro block. An additional method includes determining the zero-value coefficients in a block of a base layer, determining whether any of the zero-coefficients become non-zero coefficients in a corresponding block in an enhancement layer, and encoding a coding block flag in an enhancement layer based on that determination.

The present invention relates to a selecting method for the optimal mode of the intra prediction coding used for video frequency coding, which belongs to the video frequency coding and decoding field. The steps of the method are that a rate-distortion cost function is constructed on the basis of a prediction code rate; the rate-distortion cost of each prediction mode is calculated by the structured function, and the prediction mode with minimum rate-distortion cost is selected as the optimal mode of the intra prediction coding according to the calculating result. Proportionally, the present invention also provides a device for the selecting of intra prediction coding optimal mode of the video frequency coding. The present invention effectively avoids actually coding every blocks during the rate-distortion optimizing process on the basis that the selected mode is closer to the optimal mode of the original rate-distortion optimization model selecting, and greatly improves the coding efficiency on the precondition of ensuring little change on the code rate and the PSNR of the coding and the full searching method.

Methods and apparatus for timing recovery phase locked loops. One embodiment provides a phase detectors for generating phase difference signals on the basis of a received feedback signal and an input clock signal and an input data signal, respectively. A digital control unit is adapted to generate a control signal depending on the first and second phase difference signals A digitally controlled oscillator generates an output clock signal depending on the control signal. A feedback unit feeds the output clock signal to an input of the first phase detector as the feedback signal. And a data acquisition unit receives the data signal and the output clock signal of the digitally controlled oscillator to provide a data output signal synchronized to the output clock signal.

This invention discloses a method to produce two sets of net managing system. The following steps are included: using the XML file to describe the page; XML Analytic engine parses the content of the file, records it in the memory as the relating component information, indicates the relationship between the component and its relating logical dealing, and sends the result to the code reconstructing engine; the code reconstructing engine uses the result to generate two systems used in the desktop and the browser. This invention customizes the interface manifesting layer through the describing language, and dynamically generates two sets of applying system used in the desktop and web through the configuration file and the conversion binding mechanism. As the result, the quality of the research and the difficulty of the maintaining is reduced.

The invention belongs to the technical field of pattern recognition, particularly relates to an unsupervised pedestrian re-identification method, system and device based on pixel transfer and featuretransfer fusion, and aims to solve the problems of low retrieval precision and poor recognition accuracy of an existing cross-data-set unsupervised pedestrian re-recognition method. The method of thesystem comprises the following steps: acquiring a to-be-identified pedestrian image as an input image; based on the input image, obtaining a pedestrian re-identification result through a pre-trained pedestrian re-identification model, wherein the pedestrian re-identification model is constructed based on a residual network. According to the invention, the retrieval precision and the recognition accuracy of the existing cross-data-set unsupervised pedestrian re-recognition method are improved.

The invention discloses a method for playing television programs by a mobile terminal. The method comprises the following steps that: A, at least two mobile terminals request a television program receiving device to play the television programs; B, the television program receiving device classifies audio / video playing capacities of each mobile terminal; C, the television program receiving device carries out encoding in different manners and broadcasting on the television programs according to encoding parameters corresponding to the audio / video playing capacities of different kinds of mobile terminals; and D, each mobile terminal receives the television programs in the corresponding encoding manners, and decoding and playing the television programs. According to the method for playing the television programs by the mobile terminal, the smooth and undistorted playing of the television programs by the mobile terminals having different terminal performances at the same time can be realized.

The application provides a video file generation method and a system. The method comprises acquiring an original video code stream; partitioning the original video code stream into original video frames, which have corresponding timestamps respectively; and packing up the original video frames and the corresponding timestamps to a to-be-generated video format file. According to the application, various formats of video files can be generated so as to obviate unnecessary coding and decoding, thereby lowering CPU (central processing unit) loss and greatly improving the generation efficiency of multi-format videos.

Encoding and decoding operations of video pictures in a high-resolution chroma sampling format (such as YUV 4:4:4) using a video encoder and decoder operating on coded pictures in a low-resolution chroma sampling format (such as YUV 4:2:0) are presented. For example, high chroma resolution details are selectively encoded on a region-by-region basis. Or, as another example, coded pictures that contain sample values for low chroma resolution versions of input pictures and coded pictures that contain sample values for high chroma resolution details of the input pictures are encoded as separate sub-sequences of a single sequence of coded pictures, which can facilitate effective motion compensation. In this way, available encoders and decoders operating on coded pictures in the low-resolution chroma sampling format can be effectively used to provide high chroma resolution details.

The invention discloses a medical image zero watermarking embedding and extracting method based on real fractional Fourier transform and belongs to the technical field of information safety and image processing. According to the medical image zero watermarking embedding and extracting method based on the real fractional Fourier transform, the own characteristics of an image are utilized for structuring watermark information rather than modified, it is guaranteed that original image information does not change in the embedding process of a watermark, the embedded information amount is large, and the demands of authenticity and reliability of medical images are met. The method combines the real fractional Fourier transform theory, the image encryption theory and the zero watermarking technology, on the premise that high fidelity characteristics of the medical images are guaranteed, the robustness and the safety of the watermark are taken into consideration, the algorithm is simple and fast, realization cost is low, and the method has high practical value.

The embodiment of the invention discloses a pulse coding and decoding method and a pulse codec. In the embodiment of the invention, idle code book spaces can be combined at the time of joint coding under the condition of single track coding so as to become coding bits which can be saved by using joint coding of more than two tracks and pulses required to be coded on the tracks are combined according to positions, the number of positions with pulses, the distribution of the positions with the pulses on the tracks and the pulse number at each position with the pulse are respectively coded, so that respective coding of the plurality of pulses at the same position is avoided, thus more coding bits are saved.

The embodiment of the invention provides a video processing method and device, electronic equipment and a storage medium. The invention discloses a video processing method. The method comprises the following steps: encoding a microphone-connected video stream currently generated by a video playing terminal into an IDR encoded image group; sending to a microphone-connected video playing end; then,according to a coding rule that the IDR frame interval is a plurality of LTR frame intervals; and the currently generated microphone-connected video stream is acquired again, encoded into a pluralityof LTR encoded image groups and sent to the microphone-connected video playing end in sequence, and the first frame of each LTR encoded image group is formed by encoding a preceding IDR frame or a preceding LTR frame. According to the invention, the LTR frame is used for replacing the frame which should be coded into the IDR frame, the original IDR frame interval is expanded, the frequent coding of the IDR frame is avoided, the coding efficiency of the microphone-connected video stream is improved, the quality of the microphone-connected video stream played by the microphone-connected video playing end is further improved, and the experience of the microphone-connected video of a user is effectively improved.

Reference patterns are generated which represent hierarchized data, the hierarchized data being structured in accordance with a schema and being organized in a plurality of items. Primary structural patterns are extracted from the schema, each of the primary structural patterns representing a set of structural information. A list of instances is created for at least one extracted primary structural pattern, each instance associating items of the plurality of items with a primary structural pattern. Instances of one and a same primary structural pattern are grouped into groups of instances according to a predetermined criterion applied on items of distinct instances. For each group, at least one piece of structural information common to each instance of one of the groups of instances is extracted. A reference pattern is generated from the primary structural pattern associated with the one group of instances, the reference pattern including the extracted piece of structural information.

The invention is suitable for the technical field of video processing, and provides a video structured processing method and device, terminal equipment and a storage medium, and the method comprises the steps: respectively caching each frame of image in first N frames of images of a video stream to a cache block, and obtaining a cache address of each frame of image in a first cache region; according to the cache address of each frame of image in the first cache region, sequentially reading the images from the first cache region according to a preset frame number sequence, and performing structured processing; respectively detecting whether the image cached in each cache block is invalid or not according to the structured processing progress; when a failed image is detected, clearing the failed image, and caching a frame of new image in the cache block corresponding to the failed image. According to the method, the cache can be released in time when the invalid image is detected, the invalid image is removed, and a frame of new image can be cached after the cache is released, so the use efficiency of the cache is improved, the image is not easy to lose, and the efficiency of video structured analysis processing is improved.

The invention discloses a pattern-based time division duplex / time division multiple access channel planning frame coding method, which mainly solves the problem of low coding efficiency of a conventional channel planning frame coding method. The method comprises the following steps of: (1) setting network nodes; (2) dividing a planning cycle; (3) distributing time slots in the planning cycle by a central node to obtain a distribution result of the time slots in the planning cycle; (4) generating uplink and downlink node patterns according to the time slot distribution result; (5) defining P code words according to the purposes of the time slots, and coding the P code words; and (6) generating uplink and downlink time slot mapping patterns according to the time slot distribution result, and combining the uplink and downlink node patterns with the uplink and downlink time slot patterns to complete planning frame coding. The method has the advantages of low planning frame coding length, low overhead of transmission of planning frames in a channel, high utilization rate of the channel and low requirement on equipment, and can be applied to the field of various local area networks and access networks adopting time division duplex / time division multiple access communication.

There is provided a coding method which can effectively prevent a pre-echo and a post-echo from being generated and can perform effective coding to which an psycho-acoustic model is applied. A coding apparatus according to the coding method of the present invention detects the attack and release portions of a waveform signal, and performs gain control to a waveform signal before the attack portion and the waveform signal of the release portion by using a gain control amount adaptively calculated according to the characteristics of the waveform signal. A quantization precision determination circuit determines a quantization precision by using the masking level. An window circuit and a transform circuit transform the waveform signal into a plurality of frequency components. The quantization circuit quantizes the plurality of frequency components by using the quantization precision.

The embodiment of the invention discloses a pulse encoding and decoding method and a pulse coder-decoder. Two or more tracks are combined for conducting encoding, and therefore unoccupied code book space can be combined in the joint encoding process under the condition of single-track encoding to form encoding bits which can be saved; in addition, pulses to be encoded on each track are combined according to the positions, encoding is conducted for the number of positions with pulses, distribution of the positions with the pulses on the tracks, and the number of the pulses in the positions, multiple pulses in the same position are prevented from being encoded respectively, and more encoding bits are saved.

The invention provides a color image encryption method based on new four-dimensional hyper-chaos and DNA random coding calculation, aiming at the problems that static DNA coding and calculation rules are single, an encryption process is separated from a plaintext, and the encryption process is easily broken by the plaintext. The method comprises the following steps: firstly, designing a new four-dimensional hyper-chaotic system, generating a plurality of pseudo-random sequences by an iteration system, calculating and correcting the pseudo-random sequences to generate a new pseudo-random sequence and a matrix, decomposing a color image into R, G and B channel components, and fusing the R, G and B channel components into a matrix; then carrying out DNA random coding and DNA random calculation on an image and a pseudo-random matrix according to a newly generated pseudo-random sequence, carrying out scrambling and DNA random decoding related to a DNA-level plaintext, then decomposing the matrix into channel components, carrying out fusion to generate a final ciphertext image, wherein an initial value of a chaotic system is obtained by calculating the plaintext through an SHA-512 algorithm. The encryption method provided by the invention is not only large in key space and high in plaintext sensitivity, but also capable of effectively resisting statistical, violent and differential attacks and the like.

The invention discloses a video coding method and device, computer equipment and a storage medium. The method comprises the following steps: starting a video encoder, wherein the video encoder is usedfor encoding a video picture; obtaining a first coding parameter, the first coding parameter being a coding parameter satisfying a first coding condition, the first coding condition being that a coding duration is less than a duration threshold, and the coding duration being a duration used by the video encoder for coding; and encoding the video picture according to the first encoding parameter.According to the scheme of the invention, when video coding is carried out through the video coder, the coding parameters meeting the condition that the coding duration is smaller than the duration threshold value can be adopted to code the video picture, so that a server is prevented from coding the video by adopting fixed parameters all the time, the time spent on coding the video is reduced, and the stability of video coding and frame output is improved.

The invention discloses an I-shaped inductor automatic code spraying mechanism, which comprises a machine frame, wherein an inductor positioning device, an inductor transfer device and a code spraying device are arranged on the machine frame, the inductor positioning device is used for positioning inductors, the inductor transfer device is used for conveying the inductors after electrical testing and white-point marking operations to the code spraying device for spraying codes, the code spraying device comprises a code spraying machine, a sprayer of the code spraying machine sprays codes to the transferred inductors, the code spraying machine is provided with a control circuit, and the control circuit controls the code spraying machine to operate according to an inductor electrical testing result fed back by an inductor testing device. The I-shaped inductor automatic code spraying mechanism is used for automatically conveying the I-shaped inductors after electrical performance test to a spraying position of the code spraying machine for spraying codes automatically, can carry out code spraying operation according to the electrical performance testing result, can avoid code spraying on inferior products, increases operating efficiency, and can avoid mistakes.

The present invention discloses a method for encoding a flag of an image while encoding an I Frame, firstly setting a start code of an I Frame picture to be coded, for marking a start of the I Frame; setting a flag for indicating whether to code an identification field; judging the set flag, and if the flag indicates to encode the identification field of time and control code of a video tape recorder, encoding the identification field of time and control code of the video tape recorder, otherwise, not encoding the identification field of time and control code of the video tape recorder. In the present invention, the start code is added into the prediction picture header for marking the start of one frame picture data, as well as identifying whether there is the time_code identification field in the picture by the flag information of the time_code identification field, which can realize the objective of identifying the time_code identification field, and avoid encoding additional identification information, therefore it improves coding efficiency, and can be applied to all kinds of video / audio technical standards.

The invention discloses an encoding process method which comprises: storing and arranging the length to the open type data unit in the encoding buffer area during the encoding course; encoding the open type data, storing it after the arranging length, capturing the open type data length at the same time; moving the encoding by the length of the open type data.

The invention relates to a simple, efficient and real-time transgenic product detecting method and application thereof. The transgenic product detecting method sequentially comprises the steps that tissue processing is performed, wherein an appropriate number of samples of tissues of agricultural and pastoral plants or animals is taken, ground and homogenized; nucleic acid extraction is performed,wherein a paramagnetic particle method is adopted to perform nucleic acid extraction; targets DNA are captured, denaturating treatment is conducted on extracted nucleic acid, then specificity is utilized to design a transgene capture and extraction chip for a general component for target exogenous genes and / or transgenes generally transformed in the transgene field, and then target genes are captured, extracted and enriched; single molecule sequencing is performed, wherein genetic information of the detected samples is obtained by using a nanopore single molecule sequencing method; result analysis is performed. The simple, efficient and real-time transgenic product detecting method can simply and efficiently achieve detection of transgenic products in real time, the whole process is completed in a full-automatic 'simpleton' way, and accordingly non-professional common practitioners / consumers can also achieve detection of transgenic products.

The invention provides a remote data display method and device, equipment and a machine readable storage medium, and the method comprises the steps: a virtual machine collects desktop data generated in the operation process of the virtual machine, and transmits the desktop data to a processor; the processor receives the desktop data and sends the desktop data to the coding card; the encoding card encodes the received desktop data and sends the encoded desktop data to the processor; and the processor sends the received encoded desktop data to terminal equipment, so that the terminal equipment performs data display on a local desktop according to the encoded desktop data. According to the technical scheme, the image quality of the cloud desktop can be improved, and the calculation amount of the processor is reduced.

The embodiment of the invention discloses a video code rate control method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring sub-image pictures acquired by each image sensor and attribute information of each image sensor; according to the attribute information of each image sensor, determining a coding parameter corresponding to each image sensor, and correspondingly marking the coding parameter in a sub-image picture collected by each image sensor; splicing the sub-image pictures into a complete image picture, carrying out intra-frame coding on a starting frame of the complete image picture, and independently coding other frames according to each sub-image picture and the corresponding coding parameter. According to the embodiment of the invention, each sub-picture forming the spliced picture is independently coded according to the corresponding coding parameter, namely each sub-picture is coded at the corresponding minimum effective code rate, so that the whole video picture is prevented from being coded at a fixed code rate, and the code rate of the spliced picture is effectively reduced.

The invention provides a method for data transmission in a cloud terminal system. The method comprises the steps that audio and video transmission parameter values of a corresponding cloud terminal virtual desktop are obtained by a local terminal, wherein the audio and video transmission parameter values are used for representing the audio and video transmission capacity; if the audio and video transmission parameter values are compared with audio and video transmission parameter values of the local terminal and the audio and video transmission capacity of the cloud terminal virtual desktop is stronger than that of the local terminal, audio and video data obtained by the local terminal are offered to the cloud terminal virtual desktop, and the audio and video data are transmitted to an opposite terminal communicated with the local terminal after being coded and decoded by the cloud terminal virtual desktop; otherwise, the obtained audio and video data are transmitted to the opposite terminal communicated with the local terminal after being coded and decoded by the local terminal. According to the method for data transmission in the cloud terminal system, the transmission time is shortened and the transmission efficiency is improved.

The invention provides a video clipping method and device, electronic equipment, a storage medium and a program product. The method comprises the following steps: acquiring starting time and ending time of a clipping range of a video file; determining a first picture group and a second picture group in the video file; selectively decoding and coding the video coding data of the first picture group and the second picture group to obtain first video coding data, and obtaining cut video coding data based on the first video coding data and the second video coding data; the second video coding data is video coding data of a picture group between the first picture group and the second picture group in the video file; based on audio coding data from the starting point time to the ending point time in a video file, obtaining cut audio coding data; and performing video and audio multiplexing on the clipped video coding data and the clipped audio coding data to obtain a clipped video file. According to the invention, the video clipping processing speed can be improved.

Provided are a method and apparatus for providing a cloud streaming service. A cloud streaming server efficiently manages server resources and supports a number of terminals which is greater than a number of browsers to be concurrently executed by assigning a browser only when an input is received from a terminal and streaming an execution result corresponding to the input to the terminal and storing an execution result according to the same input in the cloud streaming server, rather than by assigning browsers to terminals connected to the cloud streaming server.