37 results about "Bit plane" patented technology

This invention relates to an optical Ising calculation method and system based on dual digital micromirror devices (DMDs). First, the combinatorial optimization problem is mapped to an Ising model. Multiple mask vectors are constructed, and each mask vector is decomposed into multiple binary bit planes. A spin configuration matrix is ​​constructed and loaded into DMD-A. For each mask vector, its binary bit planes are sequentially loaded into DMD-B. The light intensity modulated by the two DMDs is collected and processed. The optical inner product is obtained by combining the bit-weighted components, and then the energy contribution value of the mask vector is calculated. The total Hamiltonian is obtained by summing all contributions. The energy difference is calculated by randomly flipping the spins and repeating the above steps. The probability of accepting the current flip is calculated based on the energy difference. This process is iterated until the maximum number of iterations is reached to obtain the final solution. The system is used to implement the above method. Compared with the prior art, this invention can achieve a high-speed, stable, and coherently independent optical Ising solution method.

The invention relates to the technical field of manufacturing data processing, and discloses a production business data processing system for a discrete manufacturing workshop, which comprises an asynchronous data acquisition module for acquiring an asynchronous event pulse sequence of a discrete execution node; the mapping transformation module establishes an addressing mapping relation between an event source and a memory logic bit plane and generates an original differential bitmap; the bitmap filtering module is used for hedging paired logic flipping signals by utilizing an exclusive-OR logic self-reversal principle and filtering jitter interference at the edges of the signals so as to generate a net value difference bit plane; the state synchronization processing module performs in-situ upset updating on the state global bitmap through address offset addressing according to the bit identifier, and through a bitmap differential synchronization mechanism, asynchronous state updating without transaction lock constraint is achieved, calculation blocking generated by high-frequency pulse impact is relieved, and the real-time performance and stability of system data throughput are enhanced.

The invention provides a space and frequency domain data enhancement method for image super-resolution, and relates to the field of image processing. In order to solve the problems that in the prior art, picture information utilization is insufficient, and spatial correlation is prone to being damaged by a high-dimensional task method, bit plane transformation is carried out on a low-resolution image by transforming an image bit plane and introducing frequency domain fusion, and multiple reconstructed bit planes are obtained; and performing bit plane fusion on the plurality of bit planes of the high-resolution image and the plurality of reconstructed bit planes of the low-resolution image to obtain an enhanced low-resolution image fused with frequency domain information, and inputting the enhanced low-resolution image into the super-resolution network to generate a corresponding reconstructed image. According to the method, association between low-resolution underlying features and high-resolution frequency domain information is established. On the basis of protecting image spatial correlation, bit-level hidden information of a low-resolution image is mined and deeply fused with frequency and amplitude characteristics of a high-resolution image, so that texture details are greatly enriched.

The present disclosure provides an image display method, an image display device and a display system, and relates to the technical field of display, wherein the image display method comprises: for a plurality of bit planes divided from one frame of image data, storing the plurality of bit planes into a plurality of block buffers divided from a frame buffer, each block buffer is used for storing a plurality of lines of data in each bit plane, and the plurality of block buffers are used for storing all bit planes divided from one frame of image data; splitting the bit planes stored in the block buffer into subfields, and taking one subfield or a plurality of continuous subfields of the bit planes as one subfield group; inserting the subfield group of one bit plane between the subfield groups of other bit planes except the bit plane, to obtain a plurality of subfield groups to be refreshed; loading the to-be-refreshed bit planes corresponding to the plurality of subfield groups to be refreshed from the plurality of block buffers to a pixel array via a plurality of line buffers, and displaying the image data by a data driving light emitting unit in the pixel array.

The application discloses a privacy image protection-oriented robust steganography method and device, and belongs to the technical field of information security. The method comprises the following steps: scaling a cover image to obtain a carrier image capable of carrying private image information; performing frequency domain transformation on the carrier image to construct a frequency domain embedding domain; performing bit plane splitting processing on a private image to be protected to obtain private bit planes; designing a nested quantization index modulation algorithm to embed the private bit planes into the frequency domain embedding domain to generate a stego image. The method can not only realize complete lossless reconstruction of the private image in a lossless environment, but also reconstruct the private image with recognizable semantic information in a lossy environment, thereby effectively preventing sensitive images from leaking the original appearance in the process of transmission, storage and processing, and improving the security of the private image.

The application discloses a ciphertext domain reversible information hiding method of all-0 row and all-0 column coding, and is characterized by comprising the following steps: 1) coding of all-0 row and all-0 column of a bit plane block; 2) compression space calculation of the all-0 row and all-0 column coded bit plane block; and 3) reversible information hiding of the all-0 row and all-0 column coded bit plane block. The method has the advantages of large embedding capacity and high security.

The invention relates to an OFDM (Orthogonal Frequency Division Multiplexing) general inductance integrated waveform optimization method and device and a medium, and the method comprises the steps: carrying out the optimization processing of information bits through employing an optimization algorithm, and generating reserved bits; deploying OFDM subcarriers by adopting a fragmentation and layering mode based on the reserved bits and the information bits, and coding each layer of bit plane to obtain a coded bit sequence; modulating the coded bit sequence of each layer of bit plane through a preset modulation function; and synthesizing the modulated bit sequence to generate an OFDM (Orthogonal Frequency Division Multiplexing) general inductance integrated waveform. According to the method, the peak-to-average ratio (PAPR) and the sidelobe ratio (PSLR) are suppressed, and meanwhile, the radar receiving end can correctly reconstruct the reference signal through a decoding technology.

The application provides a lossless watermarking method based on uncertainty perception information and regular singular judgment. At the sending end, first, pre-processing is performed on an original image to obtain a pre-processed image and a bit plane; the pre-processed image is input into a trained model to obtain model output and binarization into a reference bit plane; a regular singular graph is obtained by detecting the bit plane and the reference bit plane and is compressed; uncertainty perception information is obtained through the model output; and the regular singular graph and the uncertainty perception information are combined to perform lossless watermarking embedding. At the receiving end, pre-processing is performed on a watermarking image to obtain a pre-processed image and a bit plane; the pre-processed image is input into a trained model to obtain model output and binarization into a reference bit plane; uncertainty perception information is obtained through the model output, the order of watermarking embedding is determined, and watermarking information is extracted accordingly; and a compressed regular singular graph is extracted to assist in original image recovery. Compared with the prior art, the application has good performance in embedding capacity and efficiency.

The application relates to the technical field of manufacturing data processing, and discloses a production business data processing system for a discrete manufacturing workshop, which comprises the following modules: an asynchronous data acquisition module which collects asynchronous event pulse sequences of discrete execution nodes; a mapping transformation module which establishes an addressing mapping relationship between an event source and a memory logic bit plane and generates an original differential bit map; a bit map filtering module which uses the self-reflection principle of exclusive or logic to pair up logical flip signals, filters out the jitter interference of signal edges to generate a net value differential bit plane; and a state synchronization processing module which implements in-situ flip update of a state global bit map through address offset addressing according to a bit identifier. Through the bit map differential synchronization mechanism, the application realizes asynchronous state update without transaction lock constraint, alleviates the calculation blockage caused by high-frequency pulse impact, and enhances the real-time performance and stability of system data throughput.

The application provides an image encryption method and a decryption method. It relates to the technical field of image encryption. The method comprises the following steps: obtaining an image to be encrypted and an initial key; driving a five-dimensional Hamilton conservative hyperchaotic system to iteratively generate a plaintext feedback chaotic sequence and a main chaotic sequence based on the initial key; decomposing the image to be encrypted into multiple bit planes, assigning independent subsequences to each bit plane based on the plaintext feedback chaotic sequence, generating a binary code related to the pixel position of the image to be encrypted, performing diffusion processing on the pixels of each bit plane based on the subsequence and the binary code, combining the diffused bit planes, and obtaining a first diffusion image; generating a first scrambling index and a second scrambling index based on the main chaotic sequence, scrambling the first diffusion image using the first scrambling index, and obtaining a first scrambled image; diffusing the first scrambled image to obtain a second diffusion image; and scrambling the pixel position of the second diffusion image using the second scrambling index to obtain an encrypted image.

Certain aspects of the present disclosure provide techniques and apparatus for improved machine learning model compression. A set of parameters for the machine learning model is accessed, wherein the set of parameters is formatted according to the first coding. A converted set of parameters is generated based on applying a conversion operation to format the set of parameters according to a second encoding. A set of bit planes is generated based on applying a bit plane transform to the converted set of parameters, and a compressed set of parameters for the machine learning model is generated based on applying a bit mask operation to one or more of the set of bit planes.

The application discloses a large-format gray-scale image line-by-line rolling exposure method and system based on DLP projection and relates to the technical field of digital light processing additive manufacturing. The application aims at the problems of existing large-format splicing technology, such as forming defects, low gray-scale modulation efficiency of traditional line-by-line exposure, and strong binding between display line number and gray-scale output, maps and expands 8-bit original gray-scale values into 11-bit expanded gray-scale values through a gray-scale stretching algorithm of an upper computer, and decomposes the 11-bit expanded gray-scale values into bit plane data, combines DDR dynamic data scheduling and BLOCKRAM cache incremental update logic based on bit plane weight at an FPGA end, and realizes time domain cumulative exposure of pixel gray-scale values. The application can realize seamless printing of 256 gray scales under any effective display line number, greatly improves exposure efficiency, eliminates splicing defects, and improves system flexibility and stability.

This invention belongs to the field of secure communication technology, specifically an image detection system and method based on agricultural privacy protection. The client acquires a crop image, calculates its hash value, XORs it with a user key, and then hashes it again to generate an encryption key. This key is then split into driving parameters and input into a four-dimensional chaotic system to generate a chaotic sequence. Using the chaotic sequence and driving parameters, the image is sequentially subjected to row / column permutation shifts, XOR diffusion, bit plane scrambling, and DNA-encoded dynamic S-box replacement to generate an encrypted image, which is then uploaded to the cloud. The cloud service platform decrypts and restores the image using the same user key, performs disease detection using a target detection model, and returns the detection results to the client. This invention achieves high-precision disease detection in complex field environments while ensuring the privacy and security of agricultural images, making it suitable for resource-constrained smart agriculture scenarios.

The invention provides a self-anti-S box construction method and system based on m-sequence generation and logic optimization, and belongs to the technical field of cryptography and hardware security. The method comprises the following steps: firstly, constructing an n-level linear feedback shift register according to a set S box number n and a primitive polynomial, generating an m sequence in a non-all-zero initial state, and adding an all-zero state at the tail; a self-reverse S box lookup table is constructed through a symmetric mapping strategy, so that the ith element in the sequence and the element at the symmetric position form mapping, and the same S box is used for encryption and decryption. Thirdly, the lookup table serves as a Boolean function truth table, is simplified into a simplest expression through a logic minimization algorithm and is decomposed into a layered logic circuit; during actual processing, N data blocks are converted into a bit plane format from block type storage, then parallel operation is carried out through a hierarchical circuit, and finally a result is transposed back to block type storage. According to the method, the same S box hardware module can be reused in the encryption and decryption process, and hardware resources are remarkably saved.

The invention relates to the technical field of projection display, and discloses a vehicle-mounted ground projection method and system, a server, a terminal and projection equipment, a user terminal is adopted to send a video which a user wants to project, the server is adopted to encode the video, to-be-projected video data expressed in a bit plane format is obtained, and the to-be-projected video data is sent to the projection equipment. An executable program is determined according to to-be-projected video data represented in a bit plane format, a server replaces a graph generation step, the executable program is sent to a user terminal, the user terminal sends the executable program to vehicle-mounted ground projection equipment, the vehicle-mounted ground projection equipment stores the executable program in an internal memory, and the vehicle-mounted ground projection equipment stores the executable program in the internal memory. The vehicle-mounted ground projection equipment reads the executable program of the internal memory to the projection chip and performs projection display by using the projection light path, in the process, an external high-speed video interface is replaced, the video which is not stored in the internal memory of the vehicle-mounted ground projection equipment can be projected, and the user experience feeling is improved.

Spatial light modulator control is disclosed. A control circuit (202) includes a sequencing circuit (208). The sequencing circuit (208) is configured to, in a color cycle: pass a first bit plane to a spatial light modulator (SLM) (204), and transmit a first global reset signal (216) to the SLM (204), the signal instructing the SLM (204) to load data of the first bit plane to a subarray of pixels of the SLM (204). The sequencing circuit (208) is further configured to, in the color cycle: pass a second bit plane to the SLM (204), and transmit a second global reset signal (216), the signal instructing the SLM (204) to load data of the second bit plane to a first subarray of the subarray of pixels, and load data of the first bit plane to a second subarray of the subarray of pixels.

The invention provides a display driving method and a display device. The display driving method comprises the following steps: respectively storing image data of a plurality of image sub-blocks; storing a plurality of bit plane scanning information corresponding to the plurality of image sub-blocks; carrying the image data of the plurality of image sub-blocks to a plurality of line caches in parallel according to the plurality of pieces of bit plane scanning information; and loading the image data of the line cache to a plurality of image display sub-blocks.

The invention discloses an industrial big data processing system based on an artificial intelligence algorithm, relates to the technical field of industrial big data and intelligent control, and is used for solving the problems of source aliasing, time sequence gap and unstable judgment in multi-source heterogeneous industrial data containing pseudo-random watermarks and noise. Bit plane chromatography and evidence curved surface imaging are introduced, a watermark effective window is judged in combination with anti-fact replay, a specific vector group is obtained by using coherent weighted robust subspace projection, candidate bit width convergence, boundary persistent window coverage and orthogonal vanishing are completed, and a signal plane and a watermark plane are output in a source separation manner. A historical side establishes an interval according to environment aggregation and a robust extreme value and carries out gray loading, and an online side executes border crossing judgment and alarm suppression; the abnormal identification adopts tolerance consistency and historical similarity to screen and output risk levels and disposal priorities; adjusting and generating, matching and issuing an adjusting quantity according to a change rate, applying a triple safety guardrail and rollback, and writing back a historical closed link according to a result.

The application discloses an image compression method and device, computer equipment and a computer readable storage medium. The method comprises the following steps: inputting a target image into a lossy image compressor to compress the target image and obtain a lossy reconstructed image; calculating a residual image between the lossy reconstructed image and the target image; shifting the residual image to a non-negative interval, and performing bit plane segmentation on the shifted residual image to obtain a high bit part and a low bit part; performing run-length encoding on the high bit part according to a judgment result of whether the high bit part is all zero to obtain first compression information; estimating a probability distribution of the low bit part to obtain the probability distribution and a corresponding mask matrix; and based on a state of a cumulative matrix, performing compression on the low bit part according to a pixel to be encoded indicated by the mask matrix to obtain second compression information. In the embodiment of the application, lossless compression of an image is realized.

The application provides a high-reliability information embedding method and system for improving image usability, which compresses each bit plane respectively by analyzing the bit plane characteristics, encodes a bit plane with the best compression performance, adopts different encoding modes according to different image data requirements, realizes lossless embedding of information, and lossless or near-lossless recovery of the carrier image, and improves the usability of the whole image.

The application provides a vehicle networking image encryption authentication method based on AFCSM and selective retransmission, and a vehicle networking image encryption authentication system based on AFCSM and selective retransmission covers a complete closed-loop process from data collection to final delivery; first, the original visual information collected by data sources such as roadside units, vehicle-mounted units and law enforcement departments is gathered to a sender, an initial key is generated through SHA-512 and 4 rounds of Feistel network, and the image is processed in combination with a 2D-AFCSM hyperchaotic sequence. In the encryption stage, the system uses an 8*8 block authentication mechanism to embed SHA-256 codes into the image bit plane, and cooperates with the odd-even bit plane separation technology and the random neighbor diffusion algorithm to generate a ciphertext image, and then the ciphertext image is transmitted through the V2X network; through the selective retransmission mechanism, the communication bandwidth cost in the vehicle networking environment is greatly reduced while ensuring that the image is successfully repaired and restored, and the balance problem among confidentiality, integrity and bandwidth efficiency in the vehicle networking visual transmission is effectively solved.

The application discloses a hybrid storage progressive precision writing and retrieval method and device, wherein the method comprises the following steps: quantizing a current real value vector of a target online model to a target bit width, determining an initial base value vector corresponding to the current real value vector of the target bit width, and writing the initial base value vector into a preset resistive random access memory; based on the current real value vector of the target bit width and the initial base value vector, calculating an initial residual error vector corresponding thereto, and performing a preset residual error quantization encoding operation on the initial residual error vector to obtain a residual error code word; performing a preset bit plane decomposition and block organization processing operation on the residual error code word to obtain a plurality of residual error bit vector blocks, and continuously storing the residual error bit vector blocks into a dynamic random access memory; and based on the initial base value vector and the initial residual error vector, performing a preset dynamic precision retrieval operation on a current query vector to obtain a corresponding retrieval result, so that the dynamic balance of retrieval performance and precision is realized.

The invention provides a light-emitting control signal parallel display method and device, and the method comprises the steps: enabling a memory module to store a plurality of bit planes to a plurality of block caches of a frame cache of the memory module, and enabling each block cache to be used for storing a plurality of lines of data in each bit plane; transmitting the multi-row data of the plurality of block caches to a row cache of a sequencing module; the scanning control module controls a row selection line of the sequencing module, and loads the multiple rows of data of the row cache to the display unit; a plurality of row selection signals generated by the sequencing module are transmitted to the display unit through row selection lines, the scanning control module generates a plurality of parallel light-emitting control signals to control the light-emitting time of a plurality of pixels of the display unit, and each light-emitting control signal is configured to refer to the loading timing of the row selection lines loading the same row of pixels.

The invention discloses an encryption compression transmission method and system for electric energy meter data, and relates to the technical field of data compression transmission, and the method comprises the steps: collecting the electric energy meter data in real time, periodically intercepting a time window, and obtaining a window sequence of multiple dimensions; converting each sampling point into a group of binary data, and dividing to obtain a bit plane sequence; obtaining the flipping probability of each bit plane sequence, and calculating the flipping random degree of each bit plane sequence; determining a noise interference layer based on the flipping random degree and performing bit mask processing to obtain purified data corresponding to each dimension window sequence; calculating the trend confusion degree of each dimension window sequence based on the purification data; and calculating a transmission control coefficient corresponding to each dimension window sequence based on the trend chaos degree so as to execute a corresponding compression strategy and carry out encrypted transmission. The compression transmission efficiency of the electric energy meter data can be improved, and the defect that the compression effect of a traditional LZW compression algorithm is reduced in a complex power grid environment is overcome.

The invention belongs to the technical field of artificial intelligence and data compression. In particular to a neural network parameter compression method based on bit-plane run-length coding, which aims at bit-level distribution characteristics of quantization parameters, and realizes efficient lossless compression through sign bit separation, negative non-sign bit flipping, high-bit-plane expansion and extended run-length coding. The method comprises the following steps: separating sign bits and flipping negative non-sign bits to optimize high-order sparsity; selecting the maximum m bit planes (m ranges from 2 to 5 and can be adaptively selected) from the next bit of the sign bit, and expanding the m bit planes into a one-dimensional bit stream according to columns; extended run length types of all zero segments, all one segment, a zero segment ending with a single 1 and a zero segment ending with two continuous 1 are adopted for coding, and the run length supports multi-gear self-adaptive bit width. A code stream formed by combining the low-order transparent transmission part, the sign bit and the run length code is output, and the efficiency can be further improved by combining numerical-level sparse coding. By optimizing bit plane distribution and a run-length mode, the compression rate is remarkably improved, hardware is easy and convenient to implement, and the method is suitable for storage and transmission of neural network weights and intermediate features and particularly suitable for end-side equipment with limited resources and efficient cloud storage scenes.

The invention provides an image reversible information hiding method and system based on block classification and halving method coding, and relates to the technical field of image processing, and the method comprises the steps: obtaining an original image; extracting a plurality of bit planes in the original image, wherein the bit planes comprise all-zero bit planes with all zero and non-all-zero bit planes with part of zero; carrying out coding processing on a non-all-0 bit plane through a multi-level block classification coding strategy to obtain a block classification code; binary sequence halving coding processing is carried out on the block classification codes to obtain halving codes; integrating the coding of the all-0 bit plane and the half-folding coding of the non-all-0 bit plane to generate a compressed image; performing position covering on the redundant space of the compressed image to obtain a filled image; performing encryption processing on the filling image by using the image encryption key to obtain an encrypted image; according to the complement position information, embedding the encrypted hidden information into the encrypted image to obtain a secret-carrying image; and decrypting and decoding the secret-carrying image to restore the original image.

The invention discloses a large-format grayscale image line-by-line rolling exposure method and system based on DLP projection, and relates to the technical field of digital light processing additive manufacturing. In order to solve the problems that an existing large-format splicing technology has forming defects, traditional line-by-line exposure grayscale modulation is low in efficiency, and the number of display lines and grayscale output are strongly bound, 8-bit original grayscale values are mapped and expanded into 11-bit expanded grayscale values through an upper computer grayscale stretching algorithm, and the 11-bit expanded grayscale values are decomposed into bit plane data; and combining DDR dynamic data scheduling based on bit plane weight at the FPGA end and BLOCKRAM cache increment updating logic to realize time domain accumulative exposure of pixel gray. According to the invention, 256-level gray scale seamless printing can be realized under any effective display line number, the exposure efficiency is greatly improved, the splicing defect is eliminated, and the flexibility and stability of the system are improved.

A processing system and method for compressing image data divides an image into pixel blocks. For each block, it computes minimum and maximum pixel values, determines bits needed to store pixel-to-minimum differences, calculates those differences, and stores them as bit-planes in memory. The system can store minimum / maximum values in metadata and compute absolute differences between them. Bit requirements are calculated using log 2(delta+1) rounded up. Bit-planes may be compressed for streaming access or fixed-size allocated for random access. The approach enables bandwidth reduction while maintaining random access or storage reduction with streaming access. This novel technique provides efficient image compression with flexible access options.

Embodiments of the present disclosure provide a timing control and row-column driving circuit, a display chip and a system, which are applied to a column data control circuit configured to drive an active matrix, and a row selection circuit configured to respond to a first clock signal, and provide display data of a target row to a corresponding data line in sequence by bit, and respond to a second clock signal, and scan a row selection line corresponding to the target row when the display data of the target row is provided to the corresponding data line, and provide the display data of the target row to a corresponding pixel unit. The present application reduces the number of subframes by reducing the weight of each bit plane, i.e. setting the weight of each bit plane to be less than the bit level weight, thereby reducing the number of subframes. Since the number of clocks required by each subframe is a constant value, the number of clocks required by each frame is reduced by reducing the number of subframes, so that the micro LED display device reduces the number of clocks under the premise of high gray scale.

The application discloses an ophthalmic patient privacy protection traceability method and system, relates to the technical field of medical information security, and comprises the following steps: dividing byte data flow into data blocks, performing Gray code conversion, constituting a binary bit plane, calculating the boundary flip number of the binary bit plane, obtaining a weighted complexity index, classifying the sensitivity of the data blocks, extracting a central region corresponding to the spatial position of the decrypted data block, obtaining a cropped image, performing standardization processing, generating a final output image, constructing a database, and performing traceability. The application combines byte-level data block division and Gray code bit plane complexity analysis, and introduces a sensitivity classification method based on the weighted complexity index, thereby improving the matching degree of the privacy protection strategy and the actual sensitive characteristics of the data, and improving the accuracy of data security processing and the overall processing efficiency of the system.