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99 results about "Hyperspectral image processing" patented technology

Hyperspectral unmixing method of multi-scale collaborative attention network based on initialized end members

The invention discloses a hyperspectral unmixing method of a multi-scale collaborative attention network based on an initialized end member, and the method comprises the steps: an abundance estimation branch module extracts the spatial features and spectral features of an original hyperspectral image through a sequence module, and carries out the fusion of the spatial features and spectral features; the multi-scale collaborative attention module performs spatial enhancement and channel feature representation on the features output by the sequence module to obtain an estimated abundance matrix; the end member estimation branch module processes an original hyperspectral image through a vertex component analysis method to obtain an initialized learnable end member matrix, and optimizes the learnable end member matrix to obtain an estimated end member matrix; carrying out joint training on the estimated abundance matrix and the estimated end member matrix; in the training process, matrix multiplication is carried out on the estimated abundance matrix and the estimated end member matrix to obtain a reconstructed hyperspectral image, and a loss function is used to adjust the network parameter weight to optimize the network unmixing effect. According to the method, the problem of insufficient degree of freedom of flexibility of end member estimation can be solved, and spatial information and spectral information existing in the unmixing process are utilized.
Owner:JIANGSU UNIV

Deep and shallow double-branch super-resolution method for forest hyperspectral satellite image

The invention relates to the technical field of satellite-borne hyperspectral image processing and analysis, and solves the technical problem that the huge spectral and spatial resolution difference between low-resolution hyperspectral data and high-resolution multispectral data cannot be fully considered in the existing method. The forest hyperspectral satellite image-oriented deep and shallow double-branch super-resolution method comprises the steps of constructing a double-branch network architecture, performing feature fusion reconstruction on output features of the double-branch network architecture, and obtaining high-resolution hyperspectral data with low spectral variation characteristics of forest vegetation in spaceborne hyperspectral image data. According to the method, the problem of modal difference between low-resolution hyperspectral data and high-resolution multispectral data is effectively solved by learning on different feature levels and scales, and the model is enabled to pay more attention to low-spectral variation characteristics of different forest vegetation in a satellite image through a plurality of feature attention mechanisms. And the requirements of subsequent fine monitoring tasks of various forest resources can be met.
Owner:HEFEI UNIV OF TECH

Method and device for multi-scale fusion of hyperspectral image and multispectral image

The invention discloses a method and a device for multi-scale fusion of a hyperspectral image and a multispectral image in the technical field of hyperspectral image processing, and aims to solve the problems of insufficient retention of spectrum and spatial information of a fusion result and poor spatial resolution when the hyperspectral image and the multispectral image are processed in the prior art. The image acquisition unit acquires a hyperspectral image and a multispectral image; splicing and fusing the hyperspectral image after up-sampling and the multispectral image to obtain a fused hyperspectral image; performing feature extraction on the fused hyperspectral image to obtain shallow spectral spatial features; performing wavelet transform on the shallow spectrum spatial features to obtain a multi-scale sub-band feature map; multi-scale feature extraction is achieved through wavelet transformation, the local feature extraction module is added to the Mamba module, spectral information and spatial information are fully obtained, multi-scale fusion of a hyperspectral image and a multi-spectral image is achieved, feature extraction precision is improved, and an image with higher quality is obtained.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Anesthesia puncture positioning method and system based on visual assistance

The invention relates to the technical field of vision assistance, and discloses an anesthesia puncture positioning method and system based on vision assistance, and the method comprises the steps: accurately positioning an anesthesia puncture point through multi-view image fusion, hyperspectral image processing, image preprocessing, illumination equalization, edge enhancement, depth feature extraction and the like. The method comprises the following steps: firstly, constructing an image coordinate system, collecting a plurality of camera images, and obtaining a fused clear image through a designed multi-view fusion algorithm and distance calculation; and in combination with a hyperspectral image fusion algorithm, the image quality is further improved. Then, residual mapping filtering denoising and local histogram enhancement are used for illumination equalization, and the image contrast and edge details are enhanced; a convolutional neural network is adopted, interest point detection is carried out, a Hessian matrix is utilized to describe image second-order changes, and local depth features are extracted. And accurate positioning of an anesthesia puncture point is realized through a weighted soft voting classifier and a dynamic threshold method.
Owner:THE EIGHTH DIVISION SHIHEZI GENERAL HOSPITAL (SHIHEZI PEOPLES HOSPITAL THE THIRD AFFILIATED HOSPITAL OF SHIHEZI UNIV SCHOOL OF MEDICINE)

Depth expansion spatial spectrum sparse memory hyperspectral sharpening fidelity method and system

The invention relates to the technical field of hyperspectral image processing, and provides a deep-expanded spatial spectrum sparse memory hyperspectral sharpening fidelity method and system, and the method comprises the steps: carrying out the priori knowledge coding of a high-resolution hyperspectral image through a regularization technology, solving a target function of a hyperspectral panchromatic sharpening task through a semi-quadratic splitting method, and carrying out the processing of a hyperspectral image. A residual module is adopted to simulate a degradation operator, spectral fidelity and spatial fidelity sub-problems are solved through gradient descent iteration, and a sparse prior sub-problem is solved based on an iterative shrinkage threshold algorithm; the high-fidelity and high-resolution hyperspectral images are corrected through the spatial spectrum prior features, and the multi-stage reconstructed high-resolution hyperspectral images are fused through the cross-stage memory fusion network to obtain the high-resolution hyperspectral images. According to the method, the reconstruction precision of the image is improved, the calculation complexity is reduced, the extraction of the spatial spectrum combined prior features of the original image is realized, and lossless information transmission is realized.
Owner:TIANJIN POLYTECHNIC UNIV

Hyperspectral anomaly detection method based on two-stage attention guidance and state space model

The invention provides a hyperspectral anomaly detection method based on double-stage attention guidance and a state space model, which relates to the technical field of hyperspectral image processing and comprises the steps of scene background modeling based on an auto-encoding network, generation of a reconstructed background image and a reconstructed residual image. Carrying out target signal enhancement on the original hyperspectral data based on the reconstructed residual image to obtain attention enhancement data, carrying out target feature depth extraction by adopting a state space model based on the attention enhancement data, generating an abnormal semantic feature image, and fusing a background guide feature image and the abnormal semantic feature image to obtain a hyperspectral image; and an abnormal probability graph is generated through adaptive gating fusion, and collaborative optimization is carried out based on a multi-task loss function. According to the method, the internal contradiction of a single network architecture is fundamentally solved, the prior guiding capability of the reconstruction method and the strong feature representation capability of the state space model are fully combined, and the accuracy and reliability of hyperspectral anomaly detection are remarkably improved.
Owner:BAY AREA LOW ALTITUDE RESEARCH INSTITUTE (GUANGDONG) CO LTD

Hyperspectral image classification method for cross-domain small sample learning based on diffusion enhancement prototype knowledge distillation

The invention discloses a hyperspectral image classification method for cross-domain small sample learning based on diffusion enhancement prototype knowledge distillation, and belongs to the technical field of hyperspectral image processing. The method comprises the following steps: extracting a neighborhood data cube, aligning spectrums, dividing a support set and a query set, and applying a mask and enhancing noise; executing domain adversarial denoising and reconstruction tasks, aligning feature distribution, and outputting a pre-training encoder; decoupling features, capturing spectrum-space global and local dependency relationships, and calculating similarity between a query set and a category prototype; constructing a distillation framework to realize knowledge migration; optimizing model parameters, and introducing a signal-to-noise ratio to enhance loss suppression noise; and performing feature extraction by using the optimized student model to generate a hyperspectral image classification result. According to the method, the problems of domain offset, intra-class feature dispersion, inter-class boundary fuzziness, noise interference and the like are solved, and the classification accuracy in a small sample scene is improved.
Owner:XIAN UNIV OF POSTS & TELECOMM

Hyperspectral classification method and system based on wavelet spatial spectrum Mama

PendingCN120339710ACharacter and pattern recognitionMulti resolution analysisComputation complexity
The invention relates to a hyperspectral classification method and system based on wavelet spatial spectrum Mamba, and belongs to the technical field of hyperspectral image processing and deep learning. According to the method, a hyperspectral image cube is used as input, an image is divided into overlapped 3D small blocks, spatial and spectral characteristic decomposition is carried out on each small block at the same time, multi-resolution analysis is carried out on reconstructed characteristics by using classical Haar wavelets, long-range dependence is captured through a Mama network of a state space model, and finally the image is input into a classifier for classification. The method effectively balances the relationship between the network model performance and the calculation complexity, has the multi-scale feature extraction capability and the global modeling capability at the same time, can reduce the calculation resource consumption while remarkably improving the classification precision, and has excellent robustness and generalization capability.
Owner:SHANDONG FENGSHI INFORMATION TECH CO LTD

Hyperspectral anomaly detection method based on background attention and anomaly suppression

The invention discloses a hyperspectral anomaly detection method based on background attention and anomaly suppression, and relates to the technical field of hyperspectral image processing, and the method comprises the following steps: S1, employing a pyramid similarity downsampling module to reduce the anomaly content in an image; s2, multi-scale background attention is calculated for the image after abnormity reduction; s3, performing pixel reconstruction on the obtained feature map through depth separable blind block convolution; and S4, using an l1 norm as a loss function, and using a reconstructed image difference to guide model training. And S5, reconstructing an image by using the trained model, and taking a reconstruction error as a detection result. According to the invention, a pyramid similarity down-sampling module is used for reducing the abnormal degree of an image; the multi-scale attention module is used for improving the attention of the network to the background; the depth separable blind block convolution shields the perception of the network on a central blind block, and reduces the possibility of abnormal reconstruction; the reconstructed image difference is used to determine an optimal training round.
Owner:KUNMING UNIV OF SCI & TECH

Hyperspectral bacteria classification method based on lightweight deep learning and membership width learning

The invention relates to a hyperspectral bacteria classification method based on lightweight deep learning and membership width learning, and belongs to the technical field of hyperspectral image processing and microbiological detection. The method comprises the following steps: collecting hyperspectral image data of food-borne pathogenic bacteria, and carrying out correction and region-of-interest extraction to obtain bacterial spectral data; the method comprises the following steps: preprocessing bacterial spectral data by using a fractional differential method, enhancing spectral features and suppressing noise to obtain enhanced spectral data, and inputting the enhanced spectral data into a lightweight deep network to extract multilevel space-spectral features to obtain depth features; inputting the depth features into a membership width learning module, and outputting a bacterial category classification result; wherein the membership width learning module comprises operations of defining a membership function, constructing a fuzzy score membership matrix and optimizing a width learning weight matrix. The objective of the invention is to solve the technical problems of insufficient feature extraction, outlier interference and high model complexity in hyperspectral bacterial classification in the prior art.
Owner:KUNMING UNIV OF SCI & TECH

Hyperspectral image classification model

The invention relates to the technical field of hyperspectral image processing, in particular to a hyperspectral image classification model. The objective of the invention is to solve the problems of computation complexity and performance bottleneck in hyperspectral image processing. The model can be applied to hyperspectral image analysis tasks in the fields of remote sensing, environment monitoring, resource exploration and the like. Efficient dimension reduction processing is carried out by adopting random Fourier feature nonlinear principal component analysis (RFF-NLPCA), redundant information is effectively reduced, and the calculation speed is increased. A lightweight space SSM Block module and a spectrum SSM Block module are introduced into the model, and the image classification precision and robustness are improved through feature modeling of the space dimension and the spectrum dimension. The gating fusion module (GFM) optimizes the fusion capability of space and spectral features, and improves the discrimination capability of feature expression. Finally, the model can efficiently process high-dimensional hyperspectral data, provides a more accurate classification result, has relatively low calculation overhead and relatively high performance, and is particularly suitable for processing large-scale hyperspectral image data.
Owner:HARBIN INST OF TECH

Small sample hyperspectral image classification method and device based on sample expansion and space-spectrum attention mechanism and medium

The invention discloses a small sample hyperspectral image classification method and device based on sample expansion and a space-spectrum attention mechanism and a medium, and relates to the technical field of computer vision and hyperspectral image processing. The objective of the invention is to solve the problem of insufficient samples in hyperspectral image classification. The method comprises the following steps: extracting spectral features from a hyperspectral image by using a spectral attention module, and obtaining a feature block for enhancing the spectral features; calculating a spatial-spectral joint feature according to the feature block of the enhanced spectral feature by using a spatial attention module; and inputting the spatial-spectral joint features into a classifier to realize classification of the hyperspectral image. The method can effectively improve the classification precision under the condition of limited training samples, and is suitable for various hyperspectral image processing scenes such as agricultural remote sensing, ecological monitoring, target recognition and the like.
Owner:QIQIHAR UNIVERSITY

Perception method based on multi-semantic space attention and Daubechies wavelet double-branch Mama

The invention discloses a perception method based on multi-semantic space attention and Daubechies wavelet double-branch Mama, and belongs to the field of hyperspectral image processing. The problem that in the existing Mama-based model feature extraction process, the capacity of capturing multi-scale local structures and direction sensing information is insufficient is solved. The method comprises the following steps: inputting a hyperspectral image; projecting the spectral vector to an embedding space through an embedding layer to obtain an embedding feature; inputting the embedded features into an encoder, wherein the encoder comprises an SMSAMama branch, a DWTMama branch and a self-adaptive feature fusion module; the SMSAMama branch is used for extracting spatial features; the DWTAMba branch is used for extracting spectral features; the adaptive feature fusion module performs weighted integration on the spatial features and the spectral features by using randomly initialized fusion weights; and inputting the integrated features into a segmentation head to generate a final perception result. The method is used in agricultural monitoring and urban planning fields.
Owner:HARBIN ENG UNIV

Hyperspectral image classification method based on spectral feature reconstruction

The invention discloses a hyperspectral image classification method based on spectral feature reconstruction, and belongs to the technical field of hyperspectral image processing, and the method comprises the steps: S1, collecting an original hyperspectral image block # imgabs0 #; s2, constructing a spectrum space feature reconstruction reversible fusion network, wherein the spectrum space feature reconstruction reversible fusion network comprises FIR, SSIF, SP and TE; s3, inputting the # imgabs1 # into FIR (Finite Impulse Response) to generate reconstruction features; s4, inputting the reconstructed features into the SSIF to generate enhanced features; s5, inputting the enhanced features into the SP to generate a semantic mark sequence; s6, inputting the semantic marking sequence into TE, and generating # imgabs2; according to the hyperspectral image classification method based on spectral feature reconstruction, lossless transmission of difficult sample features is realized, distinguishing feature expression of mixed pixels is enhanced, and classification balance of few sample categories is improved.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Hyperspectral image segmentation method based on fusion point prompt and Markov diffusion

The invention discloses a hyperspectral image segmentation method and device based on fusion point prompt and Markov diffusion, and relates to the technical field of hyperspectral image processing. The method comprises the following steps: performing spectrum-space dimension reduction processing according to hyperspectral initial data; on the basis of preset uniform distribution points, according to the spatial partitioning features, a spectrum-spatial feature adaptation module is used to carry out point prompt guided coarse segmentation; based on a cross double-attention mechanism, using a multi-modal fusion module to perform text-image feature fusion; performing multi-scale feature extraction by using a U-net encoder according to the hyperspectral initial data; diffusion reconstruction is carried out based on a symmetric codec convolutional network of a Markov diffusion model, and de-noised hyperspectral features and high-order fusion masks are extracted; and based on a cross entropy loss function, performing model optimization according to the segmentation prediction data. The hyperspectral image segmentation method is based on the text semantic features, fully considers the characteristics of the hyperspectral image, and is high in efficiency and robustness.
Owner:UNIV OF SCI & TECH BEIJING

Hyperspectral image fusion method and system based on variance guidance and heavy tail estimation

The invention relates to the technical field of hyperspectral image processing, and particularly discloses a hyperspectral image fusion method and system based on variance guidance and heavy tail estimation, and the method comprises the steps: obtaining a low-spatial-resolution hyperspectral image and a panchromatic image; performing up-sampling on the low-spatial-resolution hyperspectral image to obtain an up-sampled image; obtaining an absolute difference value weight according to the channel-by-channel variance of the low-spatial-resolution hyperspectral image and the up-sampling image; performing channel-by-channel spatial fusion by means of absolute difference weight, and injecting high-frequency information of the panchromatic image into the up-sampling image to obtain a preliminary fusion image; performing spectral correlation correction learning on the preliminary fusion image through an attention mechanism to obtain spectral mixed output; through a feedforward network, obtaining an up-sampling image subjected to variance guide processing; and obtaining a high-spatial-resolution hyperspectral image through a residual block and convolution. According to the invention, accurate selection and fusion of the spatial-spectral features are realized.
Owner:TIANJIN POLYTECHNIC UNIV

Classification method combining gaussian regression mixture model and mrf hyperspectral function data

In order to explore the effectiveness of the functional data analysis method in the hyperspectral image processing, the application proposes a classification method combining the Gaussian regression mixture model and the MRF hyperspectral function data; first, the polynomial regression is used to fit the hyperspectral image pixel spectrum curve, so as to express the pixel spectrum information in the form of function; then, the neighborhood relationship is introduced to establish the Markov random field model, and the neighborhood Gaussian regression mixture model is established in combination with the Gaussian regression mixture model; finally, according to the maximum posterior probability criterion, the final hyperspectral image classification result is obtained. Since the spatial-spectral information of the hyperspectral image is fully combined, the algorithm has high-precision classification result, and effectively improves the classification performance of the hyperspectral image.
Owner:LIAONING TECHNICAL UNIVERSITY

A hyperspectral image segmentation method based on correlation difference of spectral reflectance curve

The present application relates to a hyperspectral image segmentation method based on spectral reflectance curve correlation difference, belonging to the field of hyperspectral image processing, comprising the following steps: black and white calibration of original crop hyperspectral data; using the method of logarithmic transformation combined with first derivative to pretreat the data; screening out the feature band with representative information based on information gain method; based on the correlation characteristics of pixel spectral reflectance curve, the image is segmented to obtain a binary image; the binary image after full-band spectral image segmentation is superimposed with the binary image after feature band spectral image segmentation; based on the closed operation processing, the segmentation burrs and gaps in the binary image are eliminated; the final segmentation image is obtained by mask processing with the result after closed processing as a mask. The present application improves the background segmentation accuracy of crop canopy hyperspectral image containing complex light interference, and can more accurately and quickly obtain hyperspectral target information.
Owner:JIANGSU UNIV

Hyperspectral compression imaging method and system, terminal and storage medium

The invention discloses a hyperspectral compression imaging method and system, a terminal and a storage medium in the technical field of hyperspectral image processing, and aims to solve the problem of low reconstruction precision caused by loss of high-frequency details, weak spectral correlation and poor anti-noise capability in a compression imaging process in the prior art. The method comprises the following steps: acquiring compression measurement and a sensing mask of a coded aperture snapshot spectral imaging system, and acquiring an initial feature map according to the compression measurement and the sensing mask; inputting the initial feature map into a pre-constructed U-Net model to obtain a decoded feature map; performing convolutional mapping on the decoded feature map, and obtaining a reconstructed hyperspectral image in combination with the initial feature map; according to the method, long-sequence data are efficiently processed through the spectrum-space state synchronizer, local and global features of the image can be effectively captured through multi-scale decomposition of the wavelet variance modulation block, and the problem that reconstruction precision is not high due to loss of high-frequency details, weak spectrum correlation and poor anti-noise capacity in the traditional compression imaging process is solved.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Hyperspectral image fusion method and system based on non-uniform features and dynamic convolution

The invention relates to the technical field of hyperspectral image processing, and provides a hyperspectral image fusion method and system based on non-uniform features and dynamic convolution, and the method comprises the steps: extracting the image features of a PAN image and an up-sampling LRHS image through a convolution module; performing feature extraction on PAN image features through spatial curvature dynamic convolution, and performing feature extraction on up-sampling LRHS image features through spectral curvature dynamic convolution; performing feature fusion through a non-uniform feature integration unit, and performing feature fusion on the output feature and the spectral convolution feature to obtain a current scale fusion feature; performing multi-scale feature extraction and fusion on the current scale fusion features and the spatial convolution features through a non-uniform fusion module and jump connection; and performing residual operation on the multi-scale fusion features to obtain a hyperspectral image. According to the method, the spatial resolution of the hyperspectral image is remarkably improved, and technical support is provided for fine analysis and practical application of the hyperspectral image.
Owner:TIANJIN POLYTECHNIC UNIV

Unsupervised hyperspectral image super-resolution method based on matrix factorization network

The application discloses an unsupervised hyperspectral image super-resolution method based on a matrix decomposition network and belongs to the technical field of hyperspectral image processing. The application is used for processing a hyperspectral image, generating a simulated low spatial resolution hyperspectral image Y and a high spatial resolution multispectral image Z; first, inputting the generated data pair (Y, Z) into a designed auto-encoder network, training iteration to obtain a point spread function and a spectral response function; for a target high spatial resolution hyperspectral image X, the target high spatial resolution hyperspectral image X can be assumed to be a linear combination of a terminal member matrix A and a corresponding abundance matrix S, that is, X = AS, a spectral and spatial degradation model is combined to model, a deep CP decomposition module is designed to calculate A, A and S are iteratively solved, and finally a fusion result is obtained. The application can obtain more rich spectral and spatial features, obtain a better fusion result, and has good performance in practice.
Owner:JIANGNAN UNIV

Single hyperspectral image super-resolution method based on multi-scale cross-spectrum Transform network

The invention discloses a single hyperspectral image super-resolution method based on a multi-scale cross-spectrum Transform network, and belongs to the technical field of hyperspectral image processing, and the method comprises the steps: providing a multi-scale cross-spectrum Transform network composed of a branch network and a backbone network; the method comprises the following steps: dividing low-resolution input into overlapped spectrum groups, extracting multi-scale spatial spectrum features through a branch network, performing up-sampling, and splicing to obtain local features; the backbone network expands and deepens features through a cross-channel Transform module, and obtains global features in combination with self-attention and convolution; and adding local and global feature residuals, performing up-sampling, fusing with a bicubic up-sampling result, and finally performing convolution to generate a super-resolution image. According to the single hyperspectral image super-resolution method based on the multi-scale cross-spectrum Transform network provided by the invention, the spatial resolution of the hyperspectral image is remarkably improved while the spectral consistency is ensured.
Owner:HENAN UNIV OF SCI & TECH +1

A hyperspectral image unmixing method, system, device and storage medium

The application provides a hyperspectral image unmixing method, system, device and storage medium, belonging to the technical field of hyperspectral image processing, comprising: obtaining an original hyperspectral image; processing the original hyperspectral image by using a spectral unmixing network architecture, carrying out mixed pixel decomposition on the hyperspectral image, obtaining an endmember spectrum and an abundance map; in the spectral unmixing network architecture, a dynamic image block number allocation strategy is adopted to dynamically extract patches from the input original hyperspectral image, the patch feature sequence after dynamic allocation is converted into tokens of a unified dimension, and the tokens are input into a stacked Transformer Block module, and enhanced features with global semantic and structural features are output; the enhanced features are input into a decoder, and are restored into the endmember spectrum and the abundance map corresponding to the space of the input hyperspectral image. In a complex mixed pixel scene, the unmixing precision is significantly improved, unnecessary calculation processes are reduced, the inference efficiency of the model is improved, and the balance between precision and efficiency is realized.
Owner:SHENYANG LIGONG UNIV

Hyperspectral band selection method based on LiDAR guidance and bidirectional cross-modal attention

The application discloses a hyperspectral band selection method based on LiDAR guidance and bidirectional cross-modal attention, relates to the technical field of hyperspectral band selection, and comprises the following steps: acquiring a hyperspectral image dataset and a LiDAR dataset of a target object; constructing a pre-trained band selection network, taking the hyperspectral image dataset and the LiDAR dataset of the target object as inputs of the pre-trained band selection network, and acquiring attention weights of each band of the hyperspectral image; performing descending order sorting according to the weights of each band of the hyperspectral image, and selecting the first N hyperspectral bands in the sorting result as a band subset. Through intelligent guidance of LiDAR features and deep refinement of a StarG module, the application can adaptively and intelligently filter out a band subset with the most discriminative power and information quantity from original HSI data, thereby effectively eliminating redundant and noise information, and being beneficial to subsequent hyperspectral image processing tasks.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING

Hyperspectral end member extraction method based on leading edge surface exploration

The invention discloses a hyperspectral end member extraction method based on leading edge surface exploration, relates to the technical field of hyperspectral image processing, and solves the technical problem of low accuracy of end member extraction in an existing end member extraction method. An original hyperspectral image is obtained, and an initial population is constructed; establishing a multi-objective function of initial population evolution, and generating a Pareto leading edge surface; performing end member extraction based on a Pareto leading edge surface to obtain an end member set; guiding the non-Pareto frontier individual to evolve to a reliable region where a high-quality end member is located by adopting a learning strategy based on double targets; meanwhile, integrating end members in the Pareto frontier individuals to construct an end member pool based on a solution generation strategy of the end member pool, generating a super individual by using a pure forming long algorithm, and disturbing the super individual to generate diversified offspring individuals with similar characteristics; improving the quality of the Pareto frontier individuals obtained in the global search stage by adopting a disturbance strategy; and the accuracy of end member extraction is improved.
Owner:ANHUI UNIV

A wave band selection method, device and equipment based on matrix calculation and medium

The application provides a band selection method and device based on matrix calculation, equipment and medium, relates to hyperspectral image processing technical field, and includes obtaining a first ground object array and a second ground object array; calculating the channel value ratio of the first ground object array and the second ground object array under the same wavelength as a first adjustment factor matrix; after shifting the second ground object array to the right and left respectively, the obtained ratio is respectively taken as a second adjustment factor matrix and a third adjustment factor matrix; the first adjustment factor matrix, the second adjustment factor matrix and the third adjustment factor matrix are integrated into a target adjustment factor matrix; the wavelength with the highest similarity and the largest difference is determined from the evaluation value matrix.The application establishes the adjustment factor matrix by shifting the image of the ground object to the left and right, calculates the evaluation value matrix, and accurately determines the difference band and the similar band between the ground objects in a short time through the matrix resampling algorithm.
Owner:CHINA RAILWAY ENG CONSULTING GRP CO LTD

Satellite edge hyperspectral image processing method and system

The invention discloses a satellite edge hyperspectral image processing method and system, relates to the technical field of communication, and aims to solve the problems of resource limitation, communication bottleneck and unreasonable task scheduling faced by hyperspectral image processing in satellite edge calculation. The method comprises the following steps: taking a future data transmission rate of a satellite as a communication feature vector, and constructing a task unloading matrix in combination with a graph attention mechanism to realize accurate matching of tasks and satellite resources; the task unloading matrix is converted into task features, the task features and the hyperspectral image are fused to form a fusion tensor, a high-dimensional feature vector is generated based on the fusion tensor, key wavebands are screened, and a waveband selection matrix is obtained; and constructing a joint loss function containing a task unloading loss function and a band selection loss function, and iteratively optimizing the double matrixes until the loss is minimum to obtain an optimal matrix. Through collaborative optimization of task scheduling and image processing, system energy consumption, communication constraint and processing precision are balanced, the satellite resource utilization rate and image processing real-time performance are improved, and the method is suitable for low-orbit satellite edge calculation scenes.
Owner:XIDIAN UNIV +1

Classification method for medical hyperspectral image based on removing bad bands

This invention relates to the field of medical hyperspectral image processing technology, and discloses a medical hyperspectral image classification method based on removing undesirable bands. The method includes: converting a three-dimensional medical hyperspectral image into a two-dimensional image; calculating the matched filter weight and information entropy weight for each band of the two-dimensional image; obtaining a fusion weight based on the matched filter weight and information entropy weight; sorting all bands of the two-dimensional image based on the fusion weight and target contribution, and filtering out undesirable bands; and performing classification operations on the two-dimensional image after removing undesirable bands. Based on the principles of matched filters and information entropy, the method calculates the average value of the absolutely normalized matched filter weights, and simultaneously calculates the average weight of the information entropy. The two weights are fused to evaluate each band for filtering, thus reducing the computational resource requirements and improving computational efficiency while ensuring classification accuracy.
Owner:SHANDONG UNIV

A method for synchronous detection of road surface anomalies based on hyperspectral imaging

PendingCN122090269ARealize synchronous detectionReal-time processingCharacter and pattern recognitionImage extractionHyperspectral image processing
This invention relates to a method for synchronous detection of road surface anomalies based on hyperspectral imaging, belonging to the field of hyperspectral image processing and remote sensing detection technology. It solves the problems of low data processing efficiency, limited detection functions, and insufficient real-time performance in existing technologies. The method includes: acquiring hyperspectral images of various road surfaces, extracting key features, generating hyperspectral fingerprints, labeling road surface categories, and constructing a hyperspectral fingerprint database; training a fingerprint comparison model based on the hyperspectral fingerprint database to obtain a pre-trained fingerprint comparison model; acquiring road hyperspectral images in real time, extracting key features, generating a hyperspectral fingerprint to be tested, and obtaining the road surface category of the hyperspectral fingerprint to be tested based on the hyperspectral fingerprint database, the pre-trained fingerprint comparison model, and a hierarchical comparison strategy. This enables simultaneous detection of multiple anomalies such as icing, water accumulation, and road surface deterioration on an UAV-borne terminal.
Owner:ZHEJIANG DALI TECH

Hyperspectral image processing method and device, electronic equipment and storage medium

The embodiment of the invention discloses a hyperspectral image processing method and device, electronic equipment and a storage medium. The method comprises the following steps: obtaining crop images of a target crop, wherein the crop images comprise a first color image and a first depth image collected by a color depth camera and a first hyperspectral image collected by a hyperspectral camera; obtaining target joint calibration parameters of the color depth camera and the hyperspectral camera; and performing three-dimensional point cloud reconstruction on the first color image and the first depth image by using the target joint calibration parameter, and determining depth information corresponding to the first hyperspectral image based on first point cloud data obtained by reconstruction, the depth information being used for representing a first distance between the hyperspectral camera and the target crop when the hyperspectral camera collects the first hyperspectral image. According to the scheme, information of the color depth camera and information of the hyperspectral camera can be fused, and the first distance between the hyperspectral camera and the target crop is accurately determined when the hyperspectral camera collects the first hyperspectral image.
Owner:ZHEJIANG MEIPU GREEN FUTURE TECHNOLOGY CO LTD