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41 results about "Graph cut algorithm" patented technology

Distributed power supply load model establishment method and system

The invention discloses a distributed power supply load model establishment method and system, and relates to the technical field of load model establishment, after an establishment system obtains power system information through an API interface, a topological graph model of a power system is established, each component in the power system is abstracted as a node and an edge in the topological graph model, and the topological graph model is established; after simulation software is used for conducting simulation detection on the topological graph model, a target value of the topological graph model is calculated through an objective function, an optimal path between nodes is updated through a path algorithm, current distribution of edges is adjusted through a graph cut algorithm, power loss is reduced, overload is avoided, the steps are repeated for multiple iterations, and when convergence conditions are met, the optimal path is obtained. And outputting the final topological graph model as a comprehensive load model. The system can optimize the targets at the same time through a graph optimization algorithm, improves the overall benefits of the system, and overcomes the defect that the complexity of the power system cannot be comprehensively considered in single target optimization.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1

Food waste detection method and system based on image processing

The invention discloses a food waste detection method and system based on image processing, belongs to the field of image recognition, and aims to realize efficient and automatic recognition and quantification of kitchen waste. According to the method, residual food images are collected at multiple periods and multiple angles in a kitchen garbage can or a dinner plate recovery area through high-resolution and multi-spectral imaging equipment, preprocessing is carried out in combination with an improved Retinex algorithm and a space self-adaptive denoising technology, and the image quality is improved. Afterwards, fine segmentation of a food area is achieved through a multi-scale super-pixel segmentation and graph segmentation algorithm, and multi-category intelligent recognition is conducted on remaining food through a recognition network fused with multi-modal features. The system further combines stereoscopic vision and Monte Carlo sampling to dynamically and accurately count the volume or weight of various residual foods. The method has the advantages of high adaptability and accurate statistical result, and can provide data support for catering management, resource recovery, nutrition evaluation and the like.
Owner:INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS +1

Artificial intelligence image segmentation processing method and device, equipment and medium

The invention relates to an artificial intelligence image segmentation processing method and device, equipment and a medium. The method comprises the following steps: acquiring pixel intensity distribution of an input image and extracting local features by using a convolutional neural network to generate a pixel intensity change feature map; on the basis of the feature map, boundary area probability distribution is calculated by using a conditional random field model, and a zigzag edge is smoothed by using a graph cut algorithm to generate a continuous segmentation boundary; splicing the continuous segmentation boundary and an input image, inputting the spliced continuous segmentation boundary and the input image into a Transform enhanced U-Net network, balancing edge alignment loss and region overlapping precision loss through a dynamic weighted loss function, and generating an optimized segmentation mask; and performing threshold binarization processing on the optimized segmentation mask, removing isolated noisy points in combination with morphological closed operation, and generating a segmentation image matched with the physical defect form. By adopting the method, the continuity of segmentation boundaries and the matching precision of defect forms can be improved, and the problems of edge sawteeth and noise interference in traditional segmentation are solved.
Owner:SHAOGUAN XINGCHENG NETWORK TECH CO LTD

Complex slope runoff simulation method based on multi-source data fusion

The invention discloses a complex slope runoff simulation method based on multi-source data fusion. Comprising the following steps: fusing an unmanned aerial vehicle LiDAR, a ground penetrating radar and a remote sensing image, and considering physical coupling relationships such as vegetation root systems to generate a high-precision and physically consistent initial earth surface parameter field; the method comprises the following steps: identifying micro-topographic depression through a graph cutting algorithm and the like, and constructing a dynamically evolved slope overflow network based on a depression filling-overflow mechanism; establishing an overflow-scour-infiltration dynamic feedback regulation and control mechanism, wherein the scour intensity calculated according to overflow data is used for correcting the saturated hydraulic conductivity of the soil in real time, and corrected parameters are immediately fed back to an improved Green-Ampt infiltration model; through coupling solution of a multi-time scale algorithm, spatial and temporal distribution of slope runoff is output, and early warning and inversion of critical rainfall conditions can be triggered. The underlying surface dynamic feedback process can be simulated, the simulation reliability is improved, and technical support is provided for mountain torrent early warning.
Owner:NANJING HYDRAULIC RES INST

Mine modeling method and system based on point cloud data, terminal and medium

The invention relates to the field of digital modeling, and particularly discloses a mine modeling method and system based on point cloud data, a terminal and a medium, and the method comprises the steps: obtaining original point cloud data of a target mine area; preprocessing the original point cloud data, including voxel filtering, to obtain target point cloud data; calculating the curvature and the normal vector of each point in the target point cloud data; inputting the coordinate, the curvature and the normal vector of each point as input values into a pre-trained geological category classification model to obtain the probability that each point belongs to various geological categories; constructing an energy function of a graph cut algorithm based on the probability that each point belongs to various geological categories and the point cloud features of the target point cloud data, and obtaining the final geological category to which each point belongs through the graph cut algorithm; and constructing a digital model of the target mine area based on the geological category to which each point belongs. According to the method, geological category prediction is carried out based on the multi-scale features of the point cloud, optimization is carried out in combination with the graph cut algorithm, and the classification efficiency and robustness are improved.
Owner:山东浪潮智能生产技术有限公司

Method and device for counting microorganisms by using combined image

The invention discloses a method and device for counting microorganisms by using a combined image, and relates to the technical field of microorganism counting, and the method comprises the steps: extracting core feature points of a preprocessed microscopic image by using a convolutional neural network model, calculating the similarity between the core feature points, and obtaining a microorganism microscopic image containing a splicing position. And splicing the microbiological microscopic images by using a self-adaptive splicing algorithm, identifying and correcting appearing errors, and obtaining a spliced panoramic image. And inputting the spliced panoramic image into a graph cut algorithm, constructing an energy function of the panoramic image, finding out a segmentation path with the lowest energy by using a minimum cut algorithm, and generating a panoramic image of the microbial region. According to the method, the matching precision between adjacent images and the stability of geometric transformation are greatly improved, the segmentation precision of image segmentation is improved by utilizing the breadth-first search algorithm and the minimum cut algorithm, and the conditions of image dislocation and inconsistent overlapping are avoided.
Owner:HAINING CHENYING TECH CO LTD

Pipeline defect detection method, electronic equipment and storage medium

The invention provides a pipeline defect detection method, electronic equipment and a storage medium, and relates to the technical field of computer vision. The method comprises the following steps: performing coordinate conversion on an initial fisheye video stream to obtain a multi-frame plane image; for any frame of plane image, determining a binarization mask of the frame of plane image based on a semantic segmentation network, and extracting feature points of a pipe wall region in the frame of plane image by taking the binarization mask as a constraint to form a feature point set; determining an optimal suture line between any two adjacent frames of feature point sets by adopting a graph cut algorithm based on energy minimization, and carrying out splicing to obtain a pipeline panorama; and identifying the pipeline panorama by using a deep neural network model to perform defect identification to obtain a target defect. According to the method, the binarization mask is used as a constraint, and non-pipe wall area interference is eliminated; an optimal suture line is determined and splicing is completed based on an energy minimization graph cut algorithm, so that inter-frame splicing gaps and artifacts are effectively eliminated, and rapid and accurate detection of target defects can be realized.
Owner:SHENZHEN INVESTIGATION & RES INST

Circuit board welding spot detection method based on surface structured light

The invention discloses a circuit board welding spot detection method based on surface structured light, and the method comprises the steps: installing an electric rotatable polarizing film in front of a lens of a binocular camera, and synchronously obtaining stripe images at four orthogonal polarization angles in a structured light collection stage. A Fresnel equation and a micro-surface model are utilized to establish an analytic model of polarization state and phase error, pixel-by-pixel reflectivity suppression is carried out on original stripes, and active physical compensation of high reflection error is realized. A micro-area self-adaptive phase unwrapping algorithm based on welding spot topology priori is provided, a Markov random field with process priori constraint is constructed, a Graph Cuts algorithm is used for solving, and edge period dislocation is eliminated fundamentally. And a dynamic graph convolutional neural network is adopted to extract depth features of the welding spot cloud, and few-sample intelligent classification of each type of defects only needing 5-15 samples is realized through contrast quantity learning and a dynamic memory bank.
Owner:JIANGSU UNIV OF TECH

A CAD vector data intelligent preprocessing method based on multiple recognition mechanisms

The application relates to a CAD vector data intelligent preprocessing method based on a multiple recognition mechanism, which comprises the following steps: parsing a DXF file to construct a CAD heterogeneous information graph; extracting text features for a layer node and generating a layer embedding vector through adaptive fusion of a gate unit by aggregating high-order semantic structure features through a meta path; introducing a dynamic threshold decision mechanism to generate a dynamic threshold according to global statistical features of a drawing to determine a background layer; constructing a global dependency graph containing cleaned dependent edges and semantic constraint edges, dividing the global dependency graph into weakly coupled connected subgraphs as independent optimization transactions by using a graph cut algorithm, and performing parallel execution to complete cross-dimension collaborative optimization; setting a multi-level logical checkpoint and generating an atomic operation log, and realizing tracing and accurate recovery based on an incremental storage mechanism. The application has the effects of significantly improving background layer recognition accuracy and scene adaptability, improving collaborative optimization efficiency, and guaranteeing operation safety and traceability.
Owner:苏州明新智算科技有限公司

A method and apparatus for counting microorganisms using a composite image

The application discloses a kind of method and device for microorganism counting using combined image, it is related to microorganism counting technical field, including, using convolutional neural network model to extract the core feature point of preprocessed microscopic image, and the similarity between core feature point is calculated, obtain the microorganism microscopic image containing splicing position.Utilize adaptive splicing algorithm to the splicing of microorganism microscopic image, identify and correct the error that appears, obtain the panoramic image after splicing.Cut the panoramic image after splicing into graph algorithm, construct the energy function of panoramic image, find out the lowest energy segmentation path using minimum cut algorithm, generate the panoramic image of microorganism region.The application greatly improves the matching precision between adjacent images and the stability of geometric transformation, and the use of breadth-first search algorithm and minimum cut algorithm improves the segmentation accuracy of image segmentation, avoids the situation that image is misaligned and overlaps inconsistently.
Owner:HAINING CHENYING TECH CO LTD

Large-range water area time-space dynamic change monitoring method fusing remote sensing and GIS (Geographic Information System)

The invention relates to the technical field of image processing, in particular to a large-range water area time-space dynamic change monitoring method fusing remote sensing and GIS, and the method comprises the steps: obtaining the hyperspectral remote sensing image data of a to-be-monitored water area in real time; aiming at each moment, constructing a feature vector of each pixel point and a center vector of each area label in the water area to be monitored by combining a normalized water index and a normalized vegetation index of each pixel point through gray difference and texture feature difference between each pixel point and an adjacent pixel point in the hyperspectral remote sensing image data and by combining the normalized water index and the normalized vegetation index of each pixel point; and constructing an energy function of a graph cut algorithm for segmenting the to-be-monitored water area, segmenting the to-be-monitored water area at each moment through the energy function, and carrying out spatial-temporal dynamic change monitoring on the to-be-monitored water area through segmentation results at different moments. The invention aims to improve the accuracy of monitoring the spatial-temporal dynamic change of the water area by improving the accuracy of area segmentation.
Owner:CORE CARTOON (ZHUHAI HENGQIN) TECHNOLOGY CO LTD

Finished pastry appearance analysis method and device based on AI image analysis and recognition

The invention discloses a finished pastry appearance analysis method and device based on AI image analysis and recognition, and relates to the technical field of food detection. Comprising the following steps: S1, acquiring a multispectral image, and preprocessing the multispectral image to obtain a preprocessed multispectral image; s2, recognizing the preprocessed multispectral image through a set rotatable anchor frame, obtaining a pastry position posture detection frame, and cutting the pastry position posture detection frame through a graph cutting algorithm to obtain a cutting result; and S3, obtaining feature data according to the separation boundary, and determining a confidence degree according to the feature data. The problems that traditional manual detection is low in efficiency and difficult to cope with random postures and background interference are solved, and automatic classification and grading treatment of pastry fermentation states, foreign matter mixing and appearance defects are achieved.
Owner:青岛丹香投资管理有限公司

A multi-source ship target identification method based on two-stage collaborative fusion

The application discloses a kind of multi-source ship target identification methods based on two-stage cooperative fusion, it is related to signal processing technical field, first with the optical camera on the plane and radar sensor acquisition target sea area data, including original optical image and radar image data, then using Gaussian filter to the data collected is preprocessed;Next, using deep learning algorithm is carried out sea-land segmentation, constructs loss function and optimizes network parameter to obtain segmentation mask, then according to the mask result removes land background area, obtains the optical and radar image after processing;Afterwards, using the registration method that improved SURF feature and graph cut algorithm are combined, by screening feature point pair and solving minimum value of energy function, optimal transformation parameter is obtained, image registration is realized;For the image after registration, based on adaptive fusion rule to fuse image;Finally, corresponding feature is extracted by hand feature extraction and based on deep learning feature extraction and is fused to obtain final target recognition result.
Owner:CHINA ACADEMY OF ELECTRONICS AND INFORMATION TECHNOLOGY OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION +1

Solid state disk storage optimization method and system

ActiveCN120179187AInput/output to record carriersAlgorithmColoring algorithm
The invention discloses a solid state disk storage optimization method and system, and relates to the technical field of data storage.The method comprises the steps that based on behavior layer data and physical layer data of a solid state disk, a topological coloring algorithm and a graph cut algorithm are used for conducting regional division on a storage unit; performing abnormal behavior detection on the storage unit of each area by using an isolated forest algorithm to obtain an abnormal storage unit; acquiring change increment data of the abnormal storage unit; on the basis of a neural network model, taking the feature data and the change increment data of the abnormal storage unit as input, and generating an optimization strategy set, so that different regions are subjected to different optimization processing; and on the basis of the optimization strategy set and under the principle that the optimization strategy of the abnormal storage unit is balanced with the overall optimization target, the storage of the solid state disk is optimized after an optimal execution strategy is obtained through multi-target adjustment and optimization. Different optimization strategies can be applied to the internal area, the boundary area and the external area of the solid state disk.
Owner:JIANGSU HUACUN ELECTRONICS TECH CO LTD

A multi-view financial data clustering integration method and device

The present invention relates to the technical field of data clustering and integration, and discloses a multi-view financial data clustering and integration method and device. The method comprises: processing financial multi-view data using a K-Means clustering method to generate an ensemble pool, and then using a fuzzy membership function to generate a binary partition matrix; learning the global structure of the label space through the binary partition matrix to obtain an initial co-correlation matrix, and optimizing it using an LSR model with a Frobenius norm to obtain a label co-correlation matrix; learning a subspace projection matrix, an affinity matrix, and a sample adjacency matrix of each view, optimizing the co-correlation matrix from a feature space, and obtaining a feature co-correlation matrix; combining the label co-correlation matrix and the feature co-correlation matrix to obtain an optimized co-correlation matrix; projecting the optimized co-correlation matrix into a constraint space for constructing an undirected graph; and partitioning the undirected graph using a graph cut algorithm to obtain a final clustering integration result of the financial multi-view data.
Owner:HUAQIAO UNIVERSITY

A plate recognition method based on geometric figure range discrimination

The present application relates to the technical field of plate identification, in particular to a plate identification method based on geometric range discrimination. Mainly including the following steps: using image acquisition equipment, laser scanner and BIM model to obtain the geometric data of the plate, including boundary contour, surface morphology, spatial position and size information; extracting the boundary and key geometric feature points of the plate through graph cut algorithm; generating a three-dimensional geometric model by using multi-scale shape analysis algorithm; using Markov random field algorithm for geometric range discrimination to identify abnormal areas; comparing the BIM model design data by using iterative closest point algorithm to generate an identification report. The present application realizes accurate identification and range discrimination of building structure plates, effectively improving the monitoring and management efficiency of construction quality.
Owner:GUANGDONG HUALIAN CONSTR INVESTMENT MANAGEMENT CO

A low-altitude unmanned hangar low-altitude remote sensing data intelligent analysis method

PendingCN122090317AEfficient and accurate data processingSolve the problem of space-time dislocationCharacter and pattern recognitionNeural learning methodsEngineeringMulti source data
This invention discloses an intelligent analysis method for low-altitude remote sensing data from low-altitude unmanned aerial vehicle (UAV) hangars, belonging to the field of intelligent control technology. This scheme first collects multi-source heterogeneous data through timestamp alignment and hardware-triggered synchronization mechanisms; then, geometric correction is achieved through joint optimization of the RPC model and GCP, and image stitching is completed by combining SIFT feature matching and graph cut algorithms; subsequently, an improved YOLOv8 model is constructed to achieve multimodal fusion target detection, and semantically guided change detection is completed based on the Transformer algorithm; a high-precision 3D model is generated by fusing multi-source data using an enhanced NeRF algorithm, and vegetation analysis and trend prediction are completed using a dynamic weighting algorithm and an LSTM network; finally, a comprehensive report is generated based on a knowledge graph and interactive visualization output is provided. This invention effectively solves the problems of inefficient multi-source data processing and insufficient core detection accuracy in existing technologies, significantly improving data processing efficiency, detection accuracy, and analytical practicality, and is applicable to multiple scenarios such as ecological monitoring and resource exploration.
Owner:深圳市武测空间信息有限公司

Multi-view financial data clustering integration method and device

The invention relates to the technical field of data clustering integration, and discloses a multi-view financial data clustering integration method and device, and the method comprises the steps: processing financial multi-view data through employing a K-Means clustering method, generating an ensemble pool, and generating a binary division matrix through employing a fuzzy membership function; learning a global structure of a label space through a binary partition matrix to obtain an initial co-correlation matrix, and performing optimization by adopting an LSR model with a Frobenius norm to obtain a label co-correlation matrix; learning a subspace projection matrix, an affinity matrix and a sample adjacency matrix of each view, and optimizing a co-correlation matrix from a feature space to obtain a feature co-correlation matrix; combining the label co-correlation matrix and the feature co-correlation matrix to obtain an optimized co-correlation matrix; projecting the optimized co-correlation matrix into a constraint space for constructing an undirected graph; and dividing the undirected graph by using a graph cutting algorithm to obtain a final clustering integration result of the financial multi-view data.
Owner:HUAQIAO UNIVERSITY

Board identification method based on geometric figure range discrimination

The invention relates to the technical field of plate recognition, in particular to a plate recognition method based on geometric figure range discrimination. The method mainly comprises the following steps: acquiring geometric data of a plate by using an image acquisition device, a laser scanner and a BIM model, wherein the geometric data comprises boundary contour, surface morphology, spatial position and size information; extracting boundaries and key geometric feature points of the plates through a graph cut algorithm; generating a three-dimensional geometric model by adopting a multi-scale shape analysis algorithm; performing geometric range discrimination by using a Markov random field algorithm, and identifying an abnormal region; and comparing the BIM model design data through an iterative nearest point algorithm to generate an identification report. According to the invention, accurate identification and range discrimination of the building structural slab are realized, and the monitoring and management efficiency of the construction quality is effectively improved.
Owner:GUANGDONG HUALIAN CONSTR INVESTMENT MANAGEMENT CO

A deep learning-based liver tumor segmentation method for CT sequence images

The present invention discloses a method for liver tumor segmentation in CT sequence images based on deep learning. The method mainly comprises: (1) constructing a U-shaped 2D convolutional network based on dilated spatial pyramid convolution, and using the network to perform two-dimensional slice segmentation of CT sequence images from three viewing directions: sagittal, coronal, and transverse; (2) using a lightweight 3D convolutional network to fuse the segmentation results obtained from different viewing directions to obtain the probability that each pixel in the CT sequence belongs to the target and the three-dimensional segmentation results of the CT sequence liver tumor; (3) constructing a graph cut energy function based on the obtained probabilities and three-dimensional segmentation results to further optimize the segmentation results. By combining 2D and 3D convolutional networks and a graph cut algorithm, the present invention can effectively extract three-dimensional spatial information from CT sequences while using a lightweight network, thereby improving the accuracy of liver tumor segmentation.
Owner:HUNAN UNIV OF SCI & TECH

Solid-state hard drive storage optimization method and system

ActiveCN120179187BInput/output to record carriersAlgorithmColoring algorithm
The present invention discloses a solid-state hard disk storage optimization method and system, which relates to the field of data storage technology. The method comprises: partitioning storage units into regions based on behavioral layer data and physical layer data of the solid-state hard disk using a topological coloring algorithm and a graph cut algorithm; detecting abnormal behavior of storage units in each region using an isolation forest algorithm to obtain abnormal storage units; obtaining incremental change data of the abnormal storage units; generating an optimization strategy set based on a neural network model using the feature data and incremental change data of the abnormal storage units as input, so that different regions receive different optimization treatments; and optimizing the storage of the solid-state hard disk after obtaining the optimal execution strategy based on the optimization strategy set and under the principle of balancing the optimization strategy of the abnormal storage unit with the overall optimization goal through multi-objective tuning. The present invention can apply different optimization strategies to the internal region, boundary region, and external region of the solid-state hard disk.
Owner:JIANGSU HUACUN ELECTRONICS TECH CO LTD

Method, device and storage medium for dividing large intestinal fluid

The present application discloses a method, device and storage medium for segmenting large intestinal effusion. The method includes: extracting the target skeleton with the largest skeleton volume from the three-dimensional intestinal image and using it as the initial segmentation area; based on the initial segmentation area, using the active contour model to perform contour extraction to obtain the intestinal segmentation result; calculating the minimum enclosing circle of the intestinal segmentation result in the cross-sectional area; using the Gaussian mixture model to fit the probability distribution of the large intestine area and the probability distribution of the large intestine effusion area within the minimum enclosing circle; and inputting the fitting result into the graph cut algorithm model for effusion segmentation to segment the large intestine effusion area from the large intestine area. Using the solution of the present application, the large intestine effusion area can be accurately extracted, and subsequently by combining the large intestine effusion area with the large intestine area, the complete large intestine area can be segmented.
Owner:DALIAN UNIV OF TECH +3

Data-driven mapping function for visual effects applications using mesh segmentation

A volumetric based three-dimensional (3D) object is segmented. A training dataset of 3D training objects is acquired. A neural network is defined by multiple layers including a linear layer and a graph layer. The linear layer operates on 2D objects and provides inputs to the graph layer that performs convolution operations on vertices of the 3D objects. A model, that approximates a shape diameter function (SDF) determines neighborhood diameters including a distance from a vertex of the 3D objects to an antipodal vertex. The model is generated by iterating through the 3D objects using the neural network to converge on weights of SDF features. An input mesh is acquired and the converged weights are used to approximate SDF values. The SDF values are input to a graph cut algorithm that generates vertex clusters defining a segmented part of the input mesh. The segmented part is visually displayed or provided.
Owner:AUTODESK INC

A method for detecting narrow rivers in space-borne wide-swath interferometric radar altimeter images

The application discloses a kind of narrow river detection methods suitable for spaceborne wide swath interferometric radar altimeter image, comprising: reading into spaceborne wide swath interferometric radar altimeter image;It is enhanced river linear feature by Gaussian difference preprocessing to suppress background;Curvature structure perception detector is constructed, curvature response map is calculated based on Hessian matrix eigenvalue, and feature fusion enhancement is carried out in conjunction with multi-direction structure consistency score;The binary image obtained by adaptive threshold segmentation based on local statistics is used as region label by carrying out adaptive threshold segmentation to enhanced feature map, maximum value is extracted in the region corresponding to enhanced feature map, seed point set is formed, and adaptive region growth based on queue priority is executed, to generate initial river center line;Markov random field model is introduced, global structure optimization and topological connectivity correction are carried out using graph cut algorithm, to obtain optimized river center line;Direction and radiation characteristic constraint is applied again, morphological dilation is carried out, and finally complete river mask is generated.
Owner:NAT SPACE SCI CENT CAS

Data-driven mapping function for visual effects applications using mesh segmentation

A volumetrically based three-dimensional (3D) object is segmented. A training dataset of 3D training objects is acquired. A neural network is defined by several layers, including a linear layer and a graph layer. The linear layer operates on 2D objects and provides inputs to the graph layer, which performs convolution operations on the vertices of the 3D objects. A model approximating a shape-diameter function (SDF) determines neighborhood diameters, which include the distance from a vertex of the 3D objects to an antipodal vertex. The model is generated by iterating through the 3D objects using the neural network to converge with respect to the weights of SDF features. An input mesh is acquired, and the converged weights are used to approximate SDF values.The SDF values ​​are fed into a graph-cutting algorithm that generates vertex clusters, defining a segmented portion of the input mesh. The segmented portion is then visually displayed or provided.
Owner:AUTODESK INC

Method, apparatus, device, and storage medium for splitting an image

This application is applicable to the field of image processing technology, and provides a method, device, equipment and storage medium for segmenting images, including: obtaining an image to be segmented; inputting the image to be segmented into a trained human portrait segmentation model for processing to obtain a segmentation result of the image to be segmented. The human portrait segmentation model is obtained by training a human portrait detection model using a first training set and a second training set, and the second training set is obtained by processing a third training set used for training the human portrait detection model using a graph cut algorithm. In the above solution, the human portrait segmentation model is obtained by training the human portrait detection model using the first training set and the second training set. Since the human body detection model searches for the human body in the image in the form of a detection frame, the human portrait segmentation model can learn the structured human body feature information in the human portrait detection model. When the image to be segmented is processed by this human portrait segmentation model, missegmentation can be effectively avoided, thereby improving the accuracy of the segmentation result.
Owner:UBTECH ROBOTICS CORP LTD

A distributed graph neural network training method based on heterogeneous devices

ActiveCN119089968BNeural learning methodsGraph neural networksGraph cut algorithm
This paper discloses a distributed graph neural network training method based on heterogeneous devices. This method processes large graph data and uses a graph cut algorithm to obtain several subgraphs with balanced nodes and edges. A dynamic programming algorithm is then used to determine an optimal device placement plan. The training workload for each device is planned based on the training capabilities of the heterogeneous devices, allowing all devices to complete training tasks as simultaneously as possible within the same iteration, thereby improving edge device utilization. A fault-tolerance mechanism is also added to ensure that the network maintains a certain level of functional performance even when network nodes fail or are lost.
Owner:ANHUI PERCEPTION FUTURE ELECTRONIC TECH CO LTD

Panoramic image suture line searching method and device based on visual saliency guidance

The invention discloses a panoramic image suture line searching method and device based on visual saliency guidance, and the method comprises the steps: eliminating distortion through preprocessing, separating a dynamic foreground, generating a saliency map through a lightweight model, and constructing a multi-component energy function fusing chromatic aberration, gradient and saliency. And searching an energy minimum path based on a graph cut algorithm, optimizing smoothness through a Bezier curve, and finally realizing natural splicing through multi-band fusion. The modular architecture comprises a preprocessing unit, a significance detection unit, an energy construction unit and the like, is realized by mixing C + + / CUDA (Compute Unified Device Architecture) and Python, is compiled into a lightweight dynamic library, and supports multi-platform deployment of a PC (Personal Computer), embedded equipment and the like. According to the scheme, the problems that the suture line passes through the salient region, the energy model is single and the like are solved, the visual comfort and the algorithm robustness are improved, and the method is suitable for industrial detection, mobile shooting and other scenes.
Owner:XUZHOU NORMAL UNIVERSITY

Organ segmentation method and system

ActiveCN113597631BImage enhancementImage analysisRadiologyGraph cut algorithm
The present invention provides a method for identifying a liver in a CT image of a patient. The method includes applying a liver model to the CT image. The method further includes extracting an internal liver region and an external liver region from the CT image based on the applied liver model. The method further includes performing a graph cut algorithm on the CT image based on the internal liver region and the external liver region to generate a liver image. Performing the graph cut algorithm on the CT image to generate the liver image may be further based on internal heart and / or kidney regions and external heart and / or kidney regions. The present invention provides a non-transitory computer-readable storage medium encoded with a program.
Owner:COVIDIEN LP

Building fire risk dynamic assessment method and system based on big data

This invention relates to the field of smart fire protection technology, specifically to a method and system for dynamic assessment of building fire risks based on big data. It includes: S1, constructing a heterogeneous information network model, forming a heterogeneous information network graph of building fire protection based on multi-source data, and constructing a digital twin environment; S2, inputting the heterogeneous information network graph into a spatiotemporal graph convolutional network model, predicting the dynamic attribute weight changes of nodes and edges; S3, constructing a fire spread seepage model and a rescue failure seepage model based on evolutionary trends, and using a graph cut algorithm to identify critical seepage nodes / edges; S4, calculating fire resilience entropy based on the predicted network state; S5, extrapolating the runaway time window based on critical seepage nodes / edges and fire resilience entropy, generating risk assessment results, and mapping them to the digital twin environment for visualization. This invention can identify key weak points that lead to system collapse, predict the remaining time for fire spread to critical areas, and provide forward-looking decision support for fire rescue.