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8633 results about "Performed Imaging" patented technology

The completed action of obtaining pictures of the interior or exterior of the body usually for diagnostic reasons. EXAMPLE(S): X-ray, MRI, etc

Target identification tracking method and system based on multi-source fusion imaging

The invention discloses a target identification tracking method and system based on multi-source fusion imaging, and the method comprises the steps: obtaining and preprocessing multi-modal environment monitoring data, carrying out the image enhancement based on the preprocessed multi-modal environment monitoring data, and obtaining the image-enhanced multi-modal environment monitoring data; performing multi-modal feature extraction on the image enhancement multi-modal environment monitoring data, and introducing a cross attention mechanism to fuse the extracted multi-modal features to construct cross-modal fusion features; constructing a cascade target recognition model, and inputting cross-modal fusion features to perform target recognition on the current monitoring scene; tracking a scene recognition target in the current monitoring scene to generate scene target tracking information, and storing the scene target tracking information in a preset track memory pool; and when a tracking target disconnection condition occurs during target tracking, obtaining a mismatched tracking trajectory, and performing tracking trajectory disconnection repair in combination with the trajectory memory pool. Therefore, the identification accuracy and tracking reliability of the target in the monitoring scene are improved.
Owner:SHENZHEN PARD TECH CO LTD

Workpiece surface defect detection method and system based on optical technology

The invention relates to the technical field of optical detection, in particular to a workpiece surface defect detection method and system based on the optical technology, and the method comprises the following steps: S1, generating a curvature model of a workpiece; s2, dynamically adjusting the irradiation angle and the light spot shape of a light source according to the curvature model in the S1; s3, adjusting the focal length of the detection equipment in real time; s4, imaging acquisition is carried out on the workpiece at the same time through multiple angles; s5, correcting image distortion caused by surface curvature change, and fusing the multi-angle images into a high-precision workpiece surface image; s6, defect features of the surface of the workpiece are extracted, defects are classified, positions are marked, and a defect detection report is generated; according to the invention, by dynamically adjusting the light source and the focal length and combining multi-view imaging and advanced image processing technologies, efficient and accurate defect detection is realized, and the product quality and the production efficiency are remarkably improved.
Owner:ZHEJIANG SHUREN UNIV

Patient rehabilitation training data acquisition method and system based on visual identification

The invention discloses a patient rehabilitation training data acquisition method and system based on visual identification, and relates to the technical field of rehabilitation training data acquisition, and the method comprises the steps: carrying out the image segmentation of a patient rehabilitation training video through a deep learning model, and separating a patient motion feature region from the patient rehabilitation training video; marking key skeleton nodes in the patient motion feature region, and establishing a three-dimensional coordinate system of the key skeleton nodes; calculating a motion angle and displacement data between adjacent skeleton nodes according to the three-dimensional coordinates of the key skeleton nodes; and performing matching degree analysis on the motion angle and displacement data and a preset rehabilitation standard to generate a rehabilitation training score. According to the method, the deep learning model is adopted to perform image segmentation on the rehabilitation training video, the motion feature region of the patient is accurately extracted from the image, and key skeleton nodes are marked and analyzed in combination with the three-dimensional coordinate system, so that accurate acquisition of rehabilitation training data of the patient is realized.
Owner:JILIN UNIVERSITY

License plate recognition system and method based on image technology and medium

The invention relates to the technical field of image recognition, in particular to a license plate recognition system and method based on an image technology and a medium. The method comprises the following steps: acquiring area sensing data and a camera image set, and performing deformation effect compensation to obtain an environment compensation image set; performing image diffusion reverse enhancement on the environment compensation image set to obtain a license plate area enhanced image set; performing character region high-dimensional topological mapping based on the license plate region enhanced image set to obtain a character segmentation matrix; extracting character morphological characteristics according to the character segmentation matrix, and performing character recognition on the character morphological characteristics to obtain a character recognition result; and carrying out cross-character semantic compensation on the character recognition result to obtain a semantic compensation license plate character vector, and carrying out multi-target cross verification on the semantic compensation license plate character vector to obtain a license plate recognition result. According to the invention, the accuracy and robustness of license plate recognition can be improved.
Owner:SHENZHEN YUNBO IND CO LTD

Bridge crack identification and automatic evaluation method based on image identification and AI modeling

The invention discloses a bridge crack identification and automatic evaluation method based on image identification and AI modeling, and the method comprises the following steps: S1, obtaining an original image of a bridge structure surface, and carrying out the image preprocessing; s2, inputting the standardized image into an image recognition model, performing pixel-level segmentation on a crack region in the image, and outputting a crack mask graph; s3, performing feature extraction processing on the crack mask graph, extracting geometric feature parameters of the crack, and constructing a crack feature vector; s4, constructing an evaluation model based on a supervised learning method, and training the evaluation model; and S5, inputting the crack feature vector into an evaluation model, evaluating the structural risk level of the crack, and outputting a structural risk label. According to the method, image recognition and AI modeling are fused, automatic crack recognition and evaluation are achieved, and the method has the advantages of being high in precision, clear in boundary and intelligent in evaluation.
Owner:TAIZHOU UNIV

Data fusion method and system for CCD (Charge Coupled Device) visual inspection

The invention relates to the technical field of multi-image fusion recognition, in particular to a data fusion method and system for CCD visual detection, and the method comprises the following steps: obtaining a horizontal pixel row calculation gradient construction trend sequence, repairing an edge fracture to generate an integrity index, extracting a gray value to detect feature mutation, and distributing fusion weights to establish a mapping relation. And executing image fusion and balancing the contrast to generate a fusion matrix result. According to the method, the fracture edge region is identified, interpolation compensation is executed, the structural similarity index of the local gray sequence in the image overlapping region and feature direction mutation detection are combined, accurate identification of the edge matching result is guided, and fusion weight factor mapping corresponding to signal-to-noise ratio distribution is introduced; according to the method, the distribution relation between the pixels in the region and the credible weight is effectively established, the edge transition among the multi-source images is more natural through Poisson constraint and contrast balance adjustment of the fusion region, and the structural fidelity and the judgment stability of the fusion image are remarkably enhanced.
Owner:SHENZHEN ZHIDING IND CO LTD

Intelligent coagulant adding control method and system based on image recognition and multi-parameter modeling

The invention relates to an image processing and data processing technology, in particular to an intelligent coagulant dosing control method and system based on image recognition and multi-parameter modeling, the floc state is accurately quantified through image recognition and deep learning modeling, and a dosing prediction model with self-adaptive capacity is established in combination with raw water feed-forward information. And accurate control of coagulant addition is realized. The method comprises the following steps: collecting a floc image, carrying out image processing and floc feature extraction, and constructing a floc image description vector; time sequence input structure data fusing the floc image and the water quality data is constructed, and floc image sampling at each moment is defined as a time frame; performing enhancement and reconstruction processing on the training data of the dosing amount prediction model by adopting a data enhancement and sample equalization strategy to obtain continuously distributed synthetic samples; and constructing a hierarchical feature fusion enhanced dosing amount prediction model, fusing the previous water quality parameters, the current water quality parameters and the floc image joint feature vectors, and optimizing the dosing amount prediction precision layer by layer.
Owner:GUANGDONG LONGQUAN TECH CO LTD

Outer wall hollowing detection method and system

The invention belongs to the field of hollowing detection, and provides an outer wall hollowing detection method and system, and the method comprises the steps: carrying out the multi-mode detection of an outer wall, and obtaining an infrared thermal imaging image and an ultrasonic detection signal; performing image enhancement processing on the infrared thermal imaging image; respectively carrying out feature extraction on the infrared thermal imaging image and the ultrasonic echo image by using a convolutional neural network; extracting and fusing high-dimensional feature vectors, and aligning an infrared thermal imaging image with an ultrasonic echo image through an image registration algorithm and a spatial transformation model; and classifying the fused feature vectors through a multi-layer sensor according to the data aligned in the step, and outputting the specific position, size and severity of the hollowing area. According to the scheme, the outer wall hollowing detection can be efficiently carried out.
Owner:CHENGDU THIRD ARCHITECTURAL ENG CO

Cable surface defect detection method and system based on machine vision

The invention relates to the technical field of image data processing, in particular to a cable surface defect detection method and system based on machine vision. The method comprises the following steps: acquiring a surface image of a cable, and converting the surface image into a grayscale image; determining the local complexity of each pixel point; obtaining a plurality of areas of the grayscale image, performing complexity determination, and dividing each area to obtain a plurality of windows of each area; determining a contrast limit threshold value of each window; performing image enhancement by using a CLAHE algorithm to obtain an enhanced grayscale image; and carrying out cable surface defect detection on the enhanced grayscale image by using a defect detection algorithm. According to the method, the CLAHE parameters are adaptively adjusted based on local complexity, the window size and the contrast threshold are dynamically determined in combination with gray and gradient information, discontinuity is corrected and eliminated through boundary similarity, and the quality and reliability of a cable defect detection image are improved.
Owner:CHUNHUA KUNLUN YOUJIA CABLE CO LTD

Nighttime unmanned aerial vehicle object tracking method fusing hybrid attention mechanism

Disclosed is a nighttime unmanned aerial vehicle (UAV) object tracking method fusing a hybrid attention mechanism. According to the method, a night vision image enhancement model is employed to enhance various nighttime image frames in a night vision video sequence of UAV before performing image object tracking and recognition, to improve the accuracy of object tracking for nighttime images. With the aid of a spatial channel hybrid attention mechanism, the night vision image enhancement model can adaptively learn spatial channel features, enhancing generalization ability, and enabling the network model to focus on more effective features. Additionally, a denoising processing module is introduced to remove noise hidden in the nighttime images, improving the object positioning accuracy and tracking performance of UAV in nighttime scenarios, and reducing the failure probability of object tracking by UAV in nighttime scenarios.
Owner:CHONGQING UNIV OF TECH

Self-adaptive control method and device for supplementary light source of industrial camera

The invention relates to an adaptive control method and device for a supplementary light source of an industrial camera, and the method comprises the steps: obtaining scene perception data of the industrial camera, carrying out the real-time classification and environment parameter analysis of a shooting scene based on the scene perception data, and obtaining scene feature information; performing image quality evaluation on the scene feature information, and comparing with a preset image quality standard to obtain an image quality matching degree; performing control parameter analysis based on the image quality matching degree and the scene feature information to obtain an initial light supplementing control parameter; acquiring image data of the industrial camera, and performing brightness distribution and detail feature analysis on the image data to obtain an image analysis result; performing dynamic light source simulation on the scene feature information based on an image analysis result to obtain a corresponding dynamic supplementary light source parameter; and performing comprehensive processing on the initial light supplement control parameter, the image analysis result and the dynamic light supplement source parameter to obtain a light supplement source adjustment strategy. The problem that a traditional fixed light supplementing method is difficult to adapt to a complex environment can be effectively solved.
Owner:东莞康视达自动化科技有限公司

Pipeline detection robot defect identification method based on image processing

The invention relates to a pipeline detection robot defect identification method based on image processing, which comprises the following steps: carrying out continuous image acquisition on the inner wall of a pipeline through image acquisition equipment on a pipeline robot to obtain image data of the inner wall of the pipeline; performing image preprocessing on the pipeline inner wall image data; pipeline defects in the pipeline inner wall image data after image preprocessing are detected, and image segmentation is carried out on a defect area; and carrying out feature extraction on the defect area, carrying out defect classification, and outputting an identification classification result. According to the invention, based on algorithms of image processing, artificial intelligence and machine learning, defects of cracks, corrosion, leakage and the like in the pipeline can be automatically identified, the limitation of manual detection is solved, automatic and intelligent detection is realized, the technical effects are mainly embodied in the aspects of improving the detection precision and efficiency and the ability to adapt to different pipeline environments, and the method is suitable for popularization and application. High application and popularization values are realized.
Owner:DALIAN SIKU ELECTRIC CO LTD

Intelligent tumor recognition system and method based on big data

The invention relates to the technical field of intelligent recognition, in particular to an intelligent tumor recognition system and method based on big data. The system comprises a tumor big data processing module, a tumor identification model construction module, a tumor multi-source feature fusion module and a tumor classification identification mapping module, and can acquire corresponding tumor multi-modal medical image data and patient pathological clinical data through butt joint and perform image registration and filtering cleaning processing. Tumor multi-mode standard image data and patient clinical standard data are obtained; constructing a corresponding tumor recognition model; performing feature analysis and big data fusion splicing on the tumor multi-modal standard image data and the clinical standard data of the patient to obtain a multi-source fusion feature vector of the tumor of the patient; and inputting the multi-source fusion feature vector of the tumor of the patient into a constructed tumor identification model to carry out tumor classification and identification, thereby outputting a medical image tumor identification result. According to the invention, accurate recognition of tumors can be realized.
Owner:THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL

Photovoltaic power generation efficiency evaluation method, device, equipment and storage medium

The invention discloses a photovoltaic power generation efficiency evaluation method and device, equipment and a storage medium, and relates to the technical field of renewable energy sources, and the method comprises the steps: obtaining multi-source photovoltaic power generation data in real time, and the multi-source photovoltaic power generation data comprises electric meter data, panoramic image data, thermal imaging data, irradiance data and environment temperature data; performing image analysis on the panoramic image data and the thermal imaging data to obtain an image analysis result, and determining an abnormal photovoltaic panel according to an image recognition result; calculating the real-time power generation efficiency of the photovoltaic power station according to the multi-source photovoltaic power generation data and the image analysis result; acquiring historical power generation efficiency, and performing time sequence analysis according to the historical power generation efficiency and the real-time power generation efficiency to obtain an efficiency analysis result; and generating an efficiency evaluation report according to the efficiency analysis result and the abnormal photovoltaic panel. According to the invention, the power generation efficiency of the photovoltaic power station can be accurately evaluated.
Owner:SHENZHEN RUNSHIHUA SOFTWARE & INFORMATION TECH SERVICE CO LTD

Medical image enhancement processing method and system based on deep learning

The invention relates to the technical field of medical image processing, in particular to a medical image enhancement processing method and system based on deep learning, and the method comprises the steps: selecting an image enhancement model according to whether the number of samples needs to be expanded or not; if the number of samples needs to be expanded, performing image enhancement by adopting a generative adversarial network, otherwise, performing image enhancement by adopting an auto-encoder; a federal learning architecture is adopted to train a model, and the model is trained on a plurality of scattered devices or servers. The generative adversarial network is used to generate diversified medical image samples, and the diversity of the samples is improved. And the auto-encoder extracts key features and generates new samples, so that the diversity of data is increased. Through a federal learning architecture, by using dispersed data sources, the diversity of training samples of the model is enhanced, and meanwhile, data privacy is protected. And the diversity of samples is effectively increased, so that the generalization ability of the model is improved, and the method has higher robustness and accuracy in practical application.
Owner:费璟昊

SMT welding spot defect detection method based on image data

The invention discloses an SMT welding spot defect detection method based on image data. The method comprises the following steps: S1, acquiring an image of an SMT welding spot area; s2, carrying out image preprocessing; s3, carrying out welding spot region segmentation by adopting a self-adaptive region growing algorithm, and carrying out modeling on a welding spot region contour in combination with a boundary fitting optimization algorithm to generate a welding spot contour model; s4, multi-level comprehensive features are extracted from the welding spot area, and the multi-level comprehensive features are constructed into a feature vector set; and S5, inputting the feature vector set into a welding spot defect detection network, predicting a defect mode existing in the current batch of welding spots by adopting an improved ProtoNet model, and completing classification and identification of welding spot defects by adopting adaptive feature filtering. According to the method, the adaptive region growing algorithm and the improved ProtoNet model are adopted, accurate detection of the welding spot defects is achieved, and the method has the advantages of being high in detection precision, high in adaptability and good in robustness.
Owner:NINGBO XINGXING IOT TECHNOLOGY CO LTD

Universe ultra-precision strain measurement method

The invention discloses a global ultra-precision strain measurement method, and relates to the technical field of strain measurement. The method comprises the following steps: continuously shooting moving images of a target area by using a high-frame-rate high-definition camera, and recording accurate time; and carrying out image correction, feature extraction and tracking and data normalization. And after Gaussian white noise is added, singular value decomposition and reconstruction are carried out. And a Lucas-Kanade optical flow method is adopted to calculate the displacement of the feature points in the reconstruction matrix. And a displacement smoothing stage: smoothing the displacement data by using an LOESS method. And carrying out global strain calculation by adopting a window sliding method, and calculating the strain through the spatial derivative of the displacement field. According to the method, the quantization effect can be relieved, the continuity of displacement calculation is improved, low-energy noise and irrelevant features are removed, main motion information is reserved, meanwhile, smoothness is enhanced, local features are captured in a high-precision mode, and measurement sensitivity is improved. The method is suitable for strain measurement of large-scale structures such as bridges and buildings.
Owner:NINGBO ORIENTAL UNIV OF TECH (TEMPORARY NAME)

Systems and methods for vending and / or purchasing mobile phones and other electronic devices

A consumer-operated kiosk can include an inspection area configured to receive a first device from a user. The kiosk can include an imaging device configured to image the first device when the first device is positioned within the inspection area. In some embodiments, the kiosk includes a vending apparatus configured to store a plurality of second electronic devices for purchase. The kiosk can include one or more release mechanisms configured to directly release any one of the second electronic devices from the vending apparatus. The kiosk includes one or more processors operably connected to the inspection area, the imaging device, the vending apparatus, and the one or more release mechanisms. The one or more processors can be configured to cause the imaging device to capture one or more images of the first electronic device, facilitate purchase of the first electronic device based at least in part on the one or more captured images of the first electronic device, receive a request to vend a selected phone from among the phones in the vending apparatus, and / or cause the one or more release mechanisms to release the selected phone directly from the vending apparatus into a vending bay of the kiosk.
Owner:ECOATM LLC

Image detection method based on improved YOLO algorithm

The invention discloses an image detection method based on an improved YOLO algorithm. The method comprises the following steps: collecting a nuclear magnetic resonance image with a focus; a target detection network model is constructed: basic framework improvement is carried out based on YOLOv8, an improved backbone network comprises a C2f module, a convolution module and an improved multichannel spatial pyramid pooling module SPPMC, and the image feature extraction capability is enhanced; the improved neck network comprises an up-sampling layer, a splicing layer, a C2f module, a convolution layer and an embedded attention mechanism UECA module, multi-scale feature map fusion is carried out, and the feature fusion efficiency is improved; the improved header network adopts an improved bounding box regression loss function L (iS-IoU), the convergence speed of the model is increased, and the positioning precision is improved; inputting a training image set into the target detection network model for training; and performing image focus detection by using the trained target detection network model. The method has the characteristic of effectively improving the robustness and the detection performance of the target detection model.
Owner:GUIZHOU UNIV

Method and system for monitoring three-dimensional deformation of shock insulation structure support based on binocular vision

The invention discloses a seismic isolation structure support three-dimensional deformation monitoring method and system based on binocular vision. The method comprises the steps that a binocular camera is adopted to collect monitoring scenes under the view angle of a left camera and the view angle of a right camera; performing image distortion removal and three-dimensional correction on the monitored image pair by adopting camera internal and external parameters obtained by camera calibration; carrying out target detection on the corrected image by adopting a target detection algorithm; according to the coordinates of the target detection frame, calculating a cutting frame and cutting target areas in the left image and the right image; carrying out stereo matching on the cut image pair; according to the disparity value of each pixel in the disparity map, depth information of the target is calculated through a triangulation method, and finally a three-dimensional dense point cloud of the target is generated; performing optimization processing on the target three-dimensional dense point cloud obtained in the previous step to obtain an optimized point cloud; solving a rigid body transformation matrix of the two-point clouds by using an iterative nearest point algorithm; according to the invention, the cost of monitoring the three-dimensional pose deformation of the rubber support can be reduced, and the robustness and precision are effectively improved.
Owner:ZHEJIANG UNIV OF TECH

Photoetching machine calibration method, device and equipment based on multi-view vision

The invention relates to the technical field of photoetching machine calibration, and discloses a photoetching machine calibration method, device and equipment based on multi-view vision, and the method comprises the following steps: carrying out imaging and phase sensitive detection analysis on a mask plane and a wafer plane through a four-path optical beam splitting system to obtain four groups of mask-wafer initial alignment position information; performing scanning white light interference edge enhancement processing to obtain three-dimensional surface contour data; performing wavelet transform processing on the three-dimensional surface contour data, and performing dynamic registration on the four-path optical beam splitting system to obtain multi-view visual feature registration data; a comprehensive error model including mechanical errors, optical errors and environmental errors is established, real-time correction and error compensation are carried out on a six-degree-of-freedom motion platform of the photoetching machine, a multi-view vision calibration result of the photoetching machine is obtained, the influence of environmental vibration and thermal drift on calibration precision is effectively eliminated, and the calibration accuracy of the photoetching machine is improved. The optical system is ensured to be always in the optimal imaging state, and the calibration precision is improved.
Owner:SHENZHEN QUATERNION SEMICONDUCTOR CO LTD

Foam concrete image processing method based on sub-pixel edge reconstruction

The invention discloses a foam concrete image processing method based on sub-pixel edge reconstruction, and particularly relates to the field of foam concrete image processing.The method comprises the steps that an image of foam concrete is obtained, and a boundary response feature set containing edge direction information, edge gradient change information and local intensity comparison information is extracted; performing edge structure classification on the image region based on boundary response feature set combined threshold judgment; and aiming at the image region which is judged to be the local direction convergence mutation region, identifying a cross mutation point set by fitting a direction tensor convergence trend, and executing directionally-guided corrosion and expansion image processing. By constructing a structure judgment variable based on image boundary response characteristics and guiding a corrosion expansion path and a vein backtracking path to execute sub-pixel-level aperture boundary separation, image structure processing and contour reconstruction of a porous adhesion area are realized.
Owner:UNIV OF JINAN

Flaw detection method and system for alloy steel wire rope production

The invention discloses a flaw detection method and system for alloy steel wire rope production, and relates to the technical field of steel wire rope flaw detection, and the flaw detection method comprises the following steps: heating and cooling an alloy steel wire rope, and collecting a thermal imaging image of the alloy steel wire rope to obtain first thermal imaging sample data; performing image cutting processing and image feature processing on the first thermal imaging sample data to obtain second thermal imaging sample data; constructing an original detection model, and training by using the second thermal imaging sample data to obtain an alloy steel wire rope detection model; performing flaw detection on the alloy steel wire rope based on the alloy steel wire rope detection model; the method is used for solving the problems that in the existing steel wire rope flaw detection technology, when flaw detection is carried out through a thermal imaging image of a steel wire rope, only a static thermal imaging image is relied on, dynamic characteristic information existing in the temperature change process of the steel wire rope is ignored, and some tiny defects of the steel wire rope are difficult to find.
Owner:SUZHOU NEW BEST WIRE TECH CO LTD

Image analysis method and system for concrete apparent quality defect detection

The invention discloses an image analysis method and system for concrete apparent quality defect detection, and relates to the technical field of concrete apparent quality defect detection.The method comprises the steps that a camera device is used for collecting concrete surface images in a specified distance interval, and the optical axis of a camera lens is controlled to be perpendicular to the concrete surface; carrying out image preprocessing on the collected concrete surface image, and carrying out defect type image marking; carrying out key feature extraction on the preprocessed concrete surface image by adopting a convolutional neural network to obtain key feature information; constructing a multi-algorithm comparison verification framework, performing cross validation in combination with the key feature information to obtain defect detection results and evaluation results of a plurality of defect detection models, optimizing model parameters in combination with a confusion matrix, and determining a final concrete surface detection model; obtaining an apparent quality defect detection result based on the defect detection result and a preset quality defect grading threshold value; the efficiency of concrete apparent defect detection is improved.
Owner:广东省第四建筑工程有限公司

Distribution network power transmission line insulator damage detection method based on YOLOv8 improvement

The invention provides a distribution network power transmission line insulator damage detection method based on a YOLO algorithm, and the method comprises the steps: collecting a plurality of insulator defect images, and carrying out the data enhancement of the images; performing image detail enhancement on an insulator defect area in the image by using a super-resolution reconstruction algorithm; constructing a composite loss function to guide an image detail enhancement process; constructing an insulator defect detection model based on a YOLOv8 framework; constructing a multi-task joint loss function as an insulator defect detection model training target; and a real-time feedback mechanism is introduced, a weighted combination loss function is constructed, gradient updating optimization is executed, and the detection capability of the insulator defect detection model is improved. The method has high detection precision and robustness, can effectively improve the efficiency and accuracy of fault detection, significantly reduces the burden and cost of manual inspection, improves the safety and reliability of a power system, and provides powerful support for the operation and maintenance of power equipment.
Owner:LANZHOU JIAOTONG UNIV

Circuit board production detection method and system based on machine vision and medium

The invention relates to the technical field of production detection, in particular to a circuit board production detection method and system based on machine vision and a medium. The method comprises the following steps: carrying out circuit board scanning on a to-be-detected high-density interconnection circuit board to obtain original X-ray image sequence data of the circuit board; performing image preprocessing on the original X-ray image sequence data of the circuit board to obtain preprocessed circuit board detection image data; performing image hole structure mask processing on the preprocessed circuit board detection image data to obtain hole structure mask data; performing hole feature analysis on the preprocessed circuit board detection image data through the hole structure mask data to obtain hole feature vector data; constructing a residual copper feature recognition model; and performing residual copper detection on the hole feature vector data by using a residual copper feature recognition model to obtain residual copper detection result data. Nondestructive testing of the internal structure of the circuit board is achieved through X-ray imaging, and the accuracy and efficiency of production detection are remarkably improved.
Owner:SHENZHEN HENGXUTONG CIRCUIT CO LTD

Electronic component appearance defect detection method and system based on multispectral imaging

The present invention proposes an electronic component appearance defect detection method and system based on multispectral imaging, which belongs to the field of optical measurement technology, including: obtaining an appearance image dataset of an electronic component to be detected, performing image preprocessing, extracting an area of ​​interest of the appearance of the electronic component to be detected, and obtaining a multispectral image of the area of ​​interest; extracting the spectral reflectance characteristics and spatial characteristics of the multispectral image of the area of ​​interest through a spectral reflectance reconstruction method combining a genetic algorithm and a neural network, and performing feature fusion to form a spatial-spectral joint feature dataset of the area of ​​interest, which is input into a trained appearance defect detection model to obtain the defect type and size of the appearance of the electronic component to be detected; and displaying the appearance defect detection results of the electronic component to be detected. The present invention improves the accuracy and efficiency of appearance defect detection of electronic components.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP

Weight metering automatic classification and calibration method and system based on image recognition

The invention provides a weight metering automatic classification and calibration method and system based on image recognition, and relates to the technical field of weight metering, and the method comprises the steps: carrying out the imaging of the surface of a weight through dual-light-path high-speed camera shooting, carrying out the gamma correction, and extracting contour features and surface defect features; internal density distribution is obtained through X-ray imaging; performing multi-scale feature fusion on the surface features and the density distribution to construct a holographic feature model; analyzing the dynamic change trend of the characteristic parameters based on a deep variational Bayesian network, and performing evaluation and scoring in combination with a gradient boosting decision forest to obtain an initial classification; establishing a dynamic evaluation model by adopting a self-organizing competitive learning network, determining a weight grade and setting calibration parameters; selecting a corresponding reference weight to establish a grading calibration compensation model, and determining an adaptive weight coefficient for dynamic adjustment by combining defect distribution; and predicting a performance degradation trend by adopting a Shenchang differential equation network, and outputting calibration parameters and generating early warning information when the calibration precision meets a threshold value requirement.
Owner:LICE MEASUREMENT TECH (CHANGZHOU) CO LTD +1

Edge-deployed semi-supervised anomaly detection method and system for railway track foreign object

Disclosed in the present invention are an edge-deployed semi-supervised anomaly detection method and system for a railway track foreign object. The method comprises the following steps: an edge device encoding and decoding a video stream captured by a camera to obtain an image frame sequence, and performing frame extraction; and using a semantic segmentation model to perform image segmentation on a certain image frame obtained by means of frame extraction, to obtain a railway track region segmentation image. The use of a single image as input may generate an expert model result having a high weight value; however, the determination based on a single image is not stable, multiple consecutive images of the task scene need to be inputted, the frequency of each expert model obtaining the highest weight is computed, and the expert model corresponding to the highest frequency is the final solution. The present invention supports scene-adaptive foreign object detection algorithm automatic selection, and a user can perform selection on the basis of prior knowledge, or selection may be performed by a scene-adaptive automatic algorithm selection method; the user only needs to provide a batch of image data of the current scene, and the optimal algorithm selection can be evaluated.
Owner:GUANGZHOU EMBEDDED MACHINE TECH CO LTD