70 results about "Bit plane" patented technology

The invention discloses a bit plane data compression method and device, equipment, a storage medium and a product. The method comprises the steps that a to-be-coded sequence corresponding to a to-be-processed bit plane graph is determined, and the to-be-coded sequence comprises a plurality of pixel blocks; according to the pixel block types corresponding to the pixel blocks in the to-be-coded sequence, the pixel blocks in the to-be-coded sequence are coded, a compression result corresponding to the bit plane graph is obtained, the pixel block types comprise pure-color pixel blocks and non-pure-color pixel blocks, the non-pure-color pixel blocks are coded according to corresponding pixel values, and the compression result corresponding to the bit plane graph is obtained. The continuous pure color pixel blocks are encoded according to the corresponding pixel values and the continuous number. Different coding modes are adopted for different pixel block types, the data redundancy after coding is reduced, and the image compression effect is improved.

The present disclosure relates to a method to implement global dimming for micro led displays. A micro LED display includes: a display panel having pixel circuits, where each pixel circuit includes at least one LED; a frame buffer configured to store display data of the display panel; a first gate driver configured to select a row of the display panel; a bit plane generator configured to generate a plurality of bit planes and write the display data to each pixel circuit in the row of the display panel, where each bit plane corresponds to a bit of the display data, where the plurality of bit planes generate a GPWM signal for each pixel circuit of the display panel; and a second gate driver configured to output a DPWM signal to each row of the display panel based on a dimming value, where each pixel circuit of the display panel is configured to combine the GPWM signal with the DPWM signal into an FPWM to adjust a brightness of the pixel circuit.

The present invention discloses an efficient multi-step lithography method using an improved Golomb equal-length coding algorithm, comprising the following steps: Step 1: obtaining a lithography experimental condition m value based on the minimum exposure intensity and the outputtable maximum exposure intensity of the lithography experimental condition; Step 2: performing Golomb division transcoding on the grayscale value of a grayscale image representing the step depth according to the m value to obtain a first segment of equal-length coding; Step 3: calculating the m value and the grayscale value of the grayscale image using the Golomb compression coding rule to obtain a second segment of equal-length coding; Step 4: concatenating the first segment of coding and the second segment of coding to obtain a Golomb code; Step 5: performing a binary horizontal slice of the Golomb code to obtain a bit plane binary image; Step 6: sequentially exposing the binary image containing the first segment of coding at m times the exposure intensity, and exposing the binary image containing the second segment of coding at an exposure intensity twice as high as the adjacent segment of coding. The present invention can reduce the number of exposures to obtain a greater number of steps, thereby improving work efficiency.

Described examples include a process that includes illuminating a spatial light modulator at a first illumination level during a first bit-plane and stopping illumination at a beginning of a second bit-plane subsequent to the first bit-plane. The process also includes resuming illumination after a settling period of the spatial light modulator at a second illumination level for a time period such that a total illumination energy during the second bit-plane is equivalent to an intended illumination energy for the second bit-plane at the first illumination level and stopping illumination at the second illumination level before a subsequent third bit-plane.

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 invention relates to the technical field of image compression encoding, in particular to a high-speed implementation structure of a JPEG2000 encoder. Comprising a data reading and preprocessing module, a level shift module, a wavelet transform module, a data partitioning module, a data processing preparation module, a plurality of bit plane parallel coding modules, a bit plane coding result combination module, an MQ coding module, a Tier2 coding module and a data storage module. The method has high-speed compression performance, a JPEG2000 compression algorithm is realized by adopting the FPGA, and the characteristic that the FPGA can be operated in parallel is fully utilized; efficient module cooperation is achieved, all the modules are tightly matched, and the operation efficiency of the whole system is improved; the system adapts to images with different resolutions, and parameters and processing flows of the modules can be flexibly adjusted according to characteristics of the images with different resolutions; and the expansibility is high, the test pins are reserved on the design strategy, the function expansion can be completed by utilizing the reserved pins, and the adaptability and upgradability of the system are enhanced.

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 invention discloses a robust steganography method and device for privacy image protection, 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 bearing privacy image information; performing frequency domain transformation on the carrier image, and constructing a frequency domain embedding domain; bit plane splitting processing is carried out on the privacy image to be protected to obtain a privacy bit plane; and designing a nested quantization index modulation algorithm, and embedding the privacy bit plane into the frequency domain embedding domain to generate a secret-containing image. According to the method, complete lossless reconstruction of the privacy image can be realized in a lossless environment, and the privacy image with identifiable semantic information can be reconstructed in a lossy environment, so that the original appearance of a sensitive image is effectively prevented from being leaked in the propagation, storage and processing processes, and the security of the privacy image is improved.

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.

A bit plane converter and associated methods. In an embodiment, the bit plane converter is configured to receive a first bit plane comprising low-order bits for an array of pixels, and a second bit plane comprising higher-order bits for the pixels. The bit plane converter is configured to perform an interleave process on the pixels to generate bit fields for the pixels by processing low nibbles of a low-order word and the low nibbles of a higher-order word using a lookup table to generate a bitwise interleaved low nibble vector, processing high nibbles of the low-order word and the high nibbles of the higher-order word using the lookup table to generate a bitwise interleaved high nibble vector, and interleaving bytes of the bitwise interleaved low nibble vector with bytes of the bitwise interleaved high nibble vector to generate a bitwise interleaved vector.

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 provides an image encryption method based on crossed spiral scrambling and layered region segmentation diffusion, which utilizes NewFWHS to generate a high-randomness chaotic sequence for an encryption process, thereby improving security. Different from a traditional one-way scrambling mode, the method adopts two-way crossed spiral scrambling, multi-mode traversal is carried out on image pixels, the randomness of pixel distribution is enhanced, and the correlation between adjacent pixels is reduced; meanwhile, in combination with a bit plane decomposition and replacement technology, fine-grained disturbance is performed on image data on a bit level, so that the statistical analysis resistance is enhanced; besides, through a layered region segmentation diffusion method, internal relation between color channels is utilized, and different diffusion strategies are adopted for different channels, so that the encrypted image shows high randomness and unpredictability; according to the method, an encryption framework of three-time scrambling, two-time diffusion and one-time bit plane replacement is adopted, so that the security and robustness of the ciphertext image are improved.

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 present invention discloses a medical image encryption method based on cellular automata and the embedding of ROI positions. First, the region of interest (ROI) is selected according to the block mean threshold and the corresponding marking information is recorded. The obtained ROI is reorganized into a rectangle with the closest length and width, and then binary conversion is performed to convert it into multiple bit planes with the same configuration. These bit planes are grouped in pairs as the initial input of the cellular automata. The local rules are calculated based on the key and the hash value of the plaintext image, and encryption is performed using the number of iteration rounds of the cellular automata. A preliminary ciphertext image is formed by combining the region of non-interest (RONI). The marking information of the ROI is embedded into the ciphertext image using the histogram shifting technique, and finally the ciphertext image is output. The image encryption efficiency of this method is high.

The present invention discloses a reversible information hiding method for encrypted images with bit-plane compression and block rearrangement. First, the image owner obtains the prediction error image corresponding to the original carrier image and divides it into blocks, and then compresses the bit-planes and statistical feature data of each block. Secondly, the low-order bit-planes of each block are swapped and all the blocks are rearranged, and then the statistical feature data is counted, and the rearranged image is encrypted by an encryption key. Then all the feature data jointly form all the auxiliary information and the Huffman coding is used to reduce the length of the auxiliary information, and all the auxiliary information is embedded into the encrypted image and sent to the information hider. The information hider encrypts the secret information by a hiding key, and then embeds it into the received image and sends it to the receiver. The receiver performs image restoration and data extraction operations on the received image according to the different keys it has. The present invention improves the data embedding capacity of the encrypted image while most of the auxiliary information is encrypted, thus ensuring sufficient security and being more secure and efficient in practical applications.

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 invention discloses an image compression method and device, computer equipment and a computer readable storage medium, and the method comprises the steps: inputting a target image into a lossy image compressor for compression, and obtaining a lossy reconstructed image; calculating a residual image between the lossy reconstructed image and the target image; translating the residual image to a non-negative interval, and performing bit plane segmentation on the translated residual image to obtain a high-order part and a low-order part; according to a judgment result of whether the high-order part is all zero, performing run-length coding on the high-order part to obtain first compression information; estimating the probability distribution of the low-order part to obtain the probability distribution and a mask matrix corresponding to the probability distribution; and based on the state of an accumulation matrix, according to the to-be-coded pixel indicated by the mask matrix, compressing the low-order part to obtain second compression information. According to the embodiment of the invention, image lossless compression is realized.

The embodiment of the invention provides a visual security image encryption and decryption method, and belongs to the technical field of communication, and the method specifically comprises the steps: 1, generating a measurement matrix through a chaotic system, compressing a plaintext privacy image according to the measurement matrix, and obtaining a compression matrix; step 2, performing bit plane reordering and diffusion on the compression matrix to generate ciphertext data; 3, obtaining a corner area and a non-corner area of the carrier image by using a corner detection algorithm, and embedding the ciphertext data with different capacities into different areas of the carrier image to obtain a visual security image; and step 4, performing inverse encryption operation on the visual security image to obtain a decrypted plaintext privacy image. According to the scheme of the invention, the hyperchaos characteristic and the deep fusion of the image characteristics are introduced, the complex parameter adjustment process is simplified, and the adaptability, the calculation efficiency and the safety of the algorithm are remarkably improved.