29 results about "Hough transform" patented technology

The invention discloses a road traffic detection control method based on a vehicle-mounted camera module, and belongs to the technical field of traffic detection, and the method specifically comprises the steps: collecting road image data in real time through the vehicle-mounted camera module; preprocessing the acquired road image data, and extracting a road area; performing edge extraction on the preprocessed road image data by using an edge detection algorithm to obtain road edge information; according to the road edge information, detecting straight-line segments in the road through Hough transform, and calculating an included angle between adjacent straight-line segments to determine the line type of the road; calculating the distance between the vehicle and the road boundary and the offset of the vehicle relative to the road center line according to the line type of the road in combination with the speed and position information of the vehicle; according to the distance between the vehicle and the road boundary and the offset of the vehicle relative to the road center line, the driving direction and speed of the vehicle are adjusted through a preset control strategy; according to the invention, real-time safety detection of the vehicle in the driving state is realized.

The invention provides a door opening and closing recognition method and system based on AI video analysis, and the method comprises the steps: reading a video file, collecting video data, carrying out the data preprocessing, obtaining a to-be-recognized image, carrying out the door frame recognition of the to-be-recognized image based on edge detection and Hough transform, obtaining a door body region ROI, carrying out the expansion of a detection frame, and obtaining a door body region ROI; key frame extraction is carried out according to the extended detection frame, and motion track characteristics of the door leaf are captured; constructing and training a dynamic state recognition network in combination with a YOLOv11 algorithm and deformable convolution to obtain a target dynamic state recognition model, recognizing motion track features, outputting to obtain an opening and closing motion state of a door, extracting an angle sequence of a recent preset frame number to obtain a plurality of feature values, and inputting the feature values to a time sequence model to obtain a time sequence model; and obtaining a triggering scene which causes the door state to change. According to the invention, generalization identification of opening and closing states of various door types can be realized, continuous angle detection is supported, and the accuracy and efficiency of door state identification are improved.

The invention provides a desulfurization control method and device for waste incineration, electronic equipment and a storage medium, and relates to the technical field of waste treatment.The method comprises the steps that a combustion multispectral image and the internal average temperature of a waste incineration device in the waste incineration process are obtained; performing region segmentation on the combustion multispectral image according to a deep learning model to obtain a flame region image; performing flame edge contour detection on the flame region image based on improved Hough transform to obtain a flame edge contour; calculating a flame area fluctuation rate according to the flame edge contour, and calculating a temperature change rate according to the internal average temperature; and the adding amount of the desulfurizing agent is dynamically adjusted according to the flame area fluctuation rate and the temperature change rate. Machine vision and a distributed control system are fused and applied to the desulfurization control link of waste incineration, timely and accurate response can be made to complex and changeable working conditions, the use amount of a desulfurizing agent is reduced to the maximum extent, and the operation cost is reduced.

The application provides an image recognition-based online detection method and system for surface defects of ultra-wide and thick plates, and relates to the technical field of image recognition. The method comprises the following steps: synchronously collecting surface images and process state parameters containing final rolling temperature, rolling force distribution, laminar cooling intensity and real-time speed, firstly completing image splicing according to the final rolling temperature and the rolling force distribution to obtain a topological image; then separating a texture channel image by feature decoupling with the laminar cooling intensity as a constraint; subsequently extracting edge features of the texture channel image by Hough transformation, and introducing the rolling force distribution and the real-time speed as constraints for curve fitting to generate topological structure features; finally dynamically adjusting a kernel function by a support vector machine, and analyzing the topological structure features and a preset feature library to obtain a defect detection result. The application can effectively improve the accuracy and adaptability of defect detection under complex working conditions through deep fusion and dynamic guidance of process parameters.

The invention relates to a building group contour automatic generation method based on TLS point cloud, and the method comprises the following steps: S1, obtaining the point cloud data of a building at different site positions, and carrying out the point cloud registration of the point cloud data, and obtaining a complete point cloud model of a building group; s2, carrying out downsampling, noise reduction and cutting on the complete point cloud model to obtain a preprocessed complete point cloud model; s3, carrying out point cloud slicing on the preprocessed complete point cloud model, and intercepting a middle section point cloud; s4, performing point cloud projection on the point cloud of the middle section to obtain a projection two-dimensional plane; s5, dividing the projection two-dimensional plane into grids, then converting the grids into a grey-scale map, and carrying out binarization processing; and S6, performing Gaussian blur, Canny edge detection and Hough transform processing on the binarized grey-scale map to obtain a point cloud contour. Compared with the prior art, the method has the advantages of realizing rapid and accurate building group wall line extraction and the like.

The application relates to an attention scheme and a strip convolution semantic line detection method based on a deep Hough network, and belongs to the field of image target recognition. The method comprises the following steps: adjusting the picture size of a data set, inputting a pretreated picture into a convolution model to perform feature extraction, attention mechanism and multi-scale feature fusion, and obtaining an output feature result. Different scale features are subjected to Hough transformation and fused feature regression prediction to obtain a recognition result; a strip convolution replaces a previous spatial convolution layer to obtain remote related semantic information of an input image recognition target; a strip-shaped pooling layer and a spatial pooling layer mixed pooling layer are used for pooling of a picture of a forward network; a channel attention module is added to a feature pyramid network to help modeling the importance of picture partitioning, so that the influence of redundant information of an input image on a recognition result is reduced; and a Ghost convolution light-weight network is designed to reduce the calculation amount of the network. Compared with a conventional semantic line detection method, the model parameter amount is smaller, and the recognition accuracy is higher.

The invention provides a field core box corner extraction and perspective distortion correction method based on multi-scale Retinex fusion. The field core box corner extraction and perspective distortion correction method comprises the following steps: S1, preprocessing a core box image based on anisotropic diffusion and multi-scale Retinex fusion; s2, core box angular point extraction based on topological constraint Shii-Tomasi and graph cut optimization interaction; s3, perspective correction based on thin plate spline transformation and Markov random field fusion; and S4, performing correction result precision verification and closed-loop feedback based on Hough transform straight line fitting and geometric moment invariant fusion. According to the method, accurate extraction of core box angular points and efficient distortion correction of images are realized, and meanwhile, full-dimension precision verification of correction results, adaptive migration of processing parameters of batch images and lightweight field deployment of algorithms are completed.

The invention provides a license structured data extraction method and system, and is applied to the technical field of data processing. According to the method, the format is determined through the first five characters of the first row of the machine reading area and the features of the visual reading area, the unconfigured new format is dynamically recorded, new format configuration and annotation are generated, new format structured data extraction is completed, and a training data set is updated in real time; a three-level positioning algorithm fusion strategy is adopted, a surname and name grouping consistency score, a date data accuracy score, a structured data acquisition proportion and a positioning point deviation value are calculated by taking machine-readable area information as a reference, a preset priority is adopted for sorting, meanwhile, Hough transform and SIFT feature matching are applied to process image deviation, and a positioning processing comprehensive result is generated; taking the verified accurate data of the machine reading area and the visual reading area as reference, automatically correcting and complementing the abnormal certificate data, and generating to-be-detected data; and processing the to-be-detected data based on the target dual-channel OCR model to generate target license structured data.

The present application belongs to the technical field of contact network inspection, and particularly relates to a contact network 1C and 4C comprehensive intelligent inspection trolley, which comprises a trolley body, a data acquisition device and a data processing device; wherein the data acquisition device synchronously acquires point observation information and image observation information along a contact network corridor during the trolley body advancing, so as to jointly constitute a unified corridor reference map with a track center line, a track surface reference plane, a wire reference band and a support calibration point column; the data processing device adopts a domain Hough transform guided by the corridor reference map and a relationship backfill algorithm to identify and locate a contact network positioner, a dropper and a sectional insulator under the constraint of the corridor reference map, and finally generates a positioning landing point and a stable pose of a corresponding target in the corridor reference map. The present application effectively improves the detection precision, stability and processing efficiency, reduces the requirement for manual intervention, and significantly improves the maintenance quality and operation efficiency of the railway contact network.

The invention relates to a method for calibrating a vehicle sensor (5) of a motor vehicle, the method comprising the following steps: determining (S1) sensor data by means of the vehicle sensor (5) at a plurality of measuring times, wherein the motor vehicle moves relative to an object in the surroundings of the motor vehicle; calculating (S2) an object position of the object based on the determined sensor data; calculating (S3) a Hough transform based on the calculated object position; determining (S4) an orientation of the vehicle sensor (5) relative to a travel axis (A1) of the motor vehicle based on the calculated Hough transform; and calibrating (S5) the vehicle sensor (5) based on the determined orientation of the vehicle sensor (5) relative to the travel axis (A1) of the motor vehicle.

Advanced Hough-Based On-Device Document Localization. In an embodiment, lines are detected in an input image of a document. The lines are searched for candidate quadrilaterals. For at least a subset of the found candidate quadrilaterals, a contour score is calculated, and the candidate quadrilaterals are saved or discarded based on their contour scores. For each saved candidate quadrilateral, a contrast score is calculated. A final candidate quadrilateral is selected, based on the combined contour and contrast scores for the saved candidate quadrilaterals, to represent the borders of the document.

The application provides a method for judging the change of stored grain based on image processing. The application uses the local grain depression information of different time periods to compare the depression profile range, thereby avoiding the misjudgment caused by the change of stored grain to a certain extent. The method can achieve the purpose of automatically detecting the stored grain condition regularly. The application comprises a grain loading line detection module and a local grain surface detection module. First, the grain loading line detection module performs image preprocessing on the collected grain warehouse image, and then extracts the grain loading line by using Hough transformation, and cuts the image based on the line. Then, the local grain surface detection module performs edge detection on the cut image, and extracts the profile of the grain surface depression. Finally, the stored grain change detection module compares the extracted depression profile with the previous profile to judge whether the grain loading amount of the grain warehouse changes. The application can improve the accuracy of judging the change of stored grain.

The invention discloses a digital processing method and system for Zeeman effect experiment data, and relates to the technical field of atomic physics experiment data processing, and the method comprises the following steps: S1, image reading and preprocessing: obtaining a Zeeman effect interference image, carrying out the self-adaptive zooming according to the image size, converting the Zeeman effect interference image into a gray image, and carrying out the self-adaptive zooming according to the image size; enhancing the contrast ratio through self-adaptive histogram equalization, and removing salt and pepper noise by adopting 3 * 3 median filtering; s2, interference ring identification and measurement: carrying out edge detection by adopting a Sobel operator, detecting an interference ring in the image through Hough transform, screening two maximum concentric circles closest to the center of the image, automatically calculating the diameter of the ring, and converting the diameter of the ring into a physical size; s3, key physical quantity calculation: calculating a wavenumber difference, substituting the wavenumber difference into the optimized formula to calculate an electron charge-to-mass ratio, and performing error propagation analysis. Through automatic image processing and a precise algorithm, manual measurement errors are avoided, and the relative error of the electron charge-to-mass ratio can be reduced to 1.07% or below.

This information processing method involves causing a computer to execute information processing for extracting a straight line corresponding to a long inspection object from an image captured by using an unmanned moving body. The computer executes: processing for generating a filter-processed image having a line of a specific width emphasized from the captured image through spatial filtering processing based on a first filter having selectivity for a line having a specific width corresponding to the inspection object; and processing for extracting, on the basis of Hough transformation processing on the generated filter-processed image, the straight line corresponding to the inspection object from a plurality of straight lines in the filter-processed image.

This invention discloses a positioning device for tensile testing of fiber-reinforced composite materials under cryogenic conditions, comprising a specimen positioning system, a refrigeration system, and a specimen perpendicularity adjustment system. The refrigeration system includes modules for overall environmental refrigeration, test zone refrigeration, and specimen refrigeration. The specimen positioning system includes a first tensile clamp and a second tensile clamp. The specimen perpendicularity adjustment system includes a suction cup, a multi-degree-of-freedom robotic arm, a gripper, an industrial camera, and an image processing system. The rotation angle calculation includes steps such as binarization processing, edge detection, and Hough transform. After determining the specimen angle and position, the internal telescopic shaft of the tensile clamp extends, pushing the gripper to move and clamp the specimen. Finally, different refrigeration methods are selected according to different experimental requirements to perform tensile testing of the fiber-reinforced composite materials. This invention, through a positioning device for tensile testing of fiber-reinforced composite materials under cryogenic conditions, achieves multi-stage refrigeration of the test environment and automatic specimen replacement and perpendicularity adjustment.

The present application relates to the technical field of image recognition and industrial vision detection, and discloses an electronic atomizer sensing signal data reading method based on image recognition, which comprises the following steps: collecting panoramic images through an industrial camera array and simultaneously locating LED indicator lights and tester screens by using a double-class YOLO detection network; estimating and compensating the interference of LED halos on screen areas based on a point spread function; unsupervisedly analyzing screen layouts through multi-scale Canny edge detection and Hough transformation; respectively performing OCR recognition and skeleton extraction on screen numerical reading areas and waveform areas; after adaptive brightness normalization and optical crosstalk compensation are performed on LED sub-images, extracting timing code matching sensing signals; and finally cross- verifying double-source data and outputting batch reading results.

The invention discloses a vegetation beach scour profile image recognition and mapping method, and belongs to the technical field of beach profile image processing. The method comprises the following steps: extracting a video frame to obtain a color image data set I0, and converting the color image data set I0 into a grayscale image set I1; aiming at the grayscale image data set I1 and then aiming at the grayscale distribution characteristics of different regions, respectively enhancing region characteristics to obtain a grayscale image set I2; performing edge detection on the cross section of the sandy beach according to pixel features of different partitions of the grayscale image data set I2; firstly, Hough transform processing is carried out on an image set I3 after edge detection, and a section point set I4 is extracted; and performing coordinate mapping on the extracted section point set I4 based on a selected reference point by using a least square method, and connecting and mapping edge points by using a smooth cubic B-spline curve. The processing efficiency is high, and manual intervention is greatly reduced; the method is high in complex scene adaptability, outstanding in anti-interference capability, high in profile extraction precision and good in data continuity.

The invention relates to the technical field of image analysis, in particular to an inorganic mineral casting defect visual detection method and system.The method comprises the following steps that extreme point coordinates are generated through two-channel gray level image non-overlapping scanning, direction angles of adjacent points are calculated through Hough transform to form an offset sequence, and a disturbance unit is marked through two-channel direction angle offset operation; connected domain analysis is combined with path length and disturbance quantity to determine a defect area, and principal axis equidistant sampling is carried out to construct a gradient spectrogram matching frequency fluctuation output defect type and coordinate. According to the method, the microscopic texture capturing capability is enhanced through two-channel gray level image non-overlapping scanning, structure distortion is quantized through a Hough transform direction offset sequence, illumination interference misjudgment is reduced through two-channel direction angle synchronous operation, and noise interference is restrained through connected domain two-index constraint judgment. The principal axis equidistant sampling is combined with gradient spectrogram frequency matching to realize accurate defect classification, and the detection precision and the anti-interference performance are improved by spatial arrangement feature quantization and multi-dimensional feature fusion.

The invention provides a main cable erection quality defect online monitoring method and system based on image analysis, and belongs to the technical field of suspension bridge construction quality control. Carrying out defect target positioning on the image with the defect in the preprocessed image by utilizing a YOLO deep learning model, then determining a twisting angle in the image with the defect by utilizing Hough transform, determining a surface damage area in the image with the defect by utilizing a region growing algorithm, judging a twisting condition according to the twisting angle, and determining a surface damage area in the image with the defect. The surface damage condition is judged according to the surface damage area, so that online quality monitoring is carried out in the cable strand erecting process; the technical problems that in the prior art, quality inspection is conducted in a manual inspection mode, the defect recognition error is large, and efficiency is low are solved.

The application discloses an AI image recognition-based zero-code form automatic generation method, which comprises the following steps: receiving a sketch or a screenshot provided by a user, performing Gaussian filter noise reduction, simplified Canny algorithm edge detection and Otsu method binarization processing on the sketch or the screenshot; utilizing an object detection model to identify form components in the preprocessed image, and outputting the boundary box coordinates of each component; detecting a connection line by Hough transformation, judging whether the connection line is an arrow, and extracting the potential relationship between the form components; then constructing a dynamic relationship graph according to the extracted potential relationship, utilizing a graph neural network to analyze the logical relationship in the dynamic relationship graph, optimizing a user interaction path through reinforcement learning, and generating an interactive form according to the analyzed logical relationship and the optimized interaction path; the method can automatically generate an interactive form from a sketch or a screenshot provided by a user, reduces the form development threshold, and improves the form development efficiency.

The present application relates to pressure gauge metrological verification technical field, especially provide a kind of for pressure gauge identification method and device of test.The method includes the image of double pressure gauge of digital pressure gauge and pointer pressure gauge is collected using single camera, and image segmentation is carried out;The image of pointer pressure gauge is preprocessed;By constructing the character recognition model based on PaddleOCR library, the range of pointer pressure gauge and digital pressure indication are identified;The image of pointer pressure gauge is subjected to Hough circle transformation detection and straight line Hough transformation detection, and the scale line ring and pointer are obtained by setting threshold;According to scale line ring, after the mask of annular scale line non-scale area is constructed, polar coordinate is developed;The indication of pointer pressure gauge is calculated, the method overcomes the uncertainty and artificial error of manual reading, realizes the synchronous identification of double pressure indication, and improves the accuracy and efficiency of identification.

The invention relates to the technical field of metallographic analysis and grain size detection of metal materials, in particular to a twin boundary detection and elimination method for intelligent grading of grain sizes, and aims to solve the problem of deviation of an automatic grading result of the grain sizes due to the fact that twin boundaries generated after materials such as austenitic stainless steel or copper alloy are etched are easily misjudged as normal grain boundaries. According to the method, precise detection of the twin boundaries is realized through Hough transform, image restoration after twin boundaries are removed is completed in combination with a texture synthesis technology based on a Criminisi algorithm, interference of the twin boundaries on intelligent grain size rating is effectively solved, the processed metallographic image can be directly used for subsequent automatic grain size calculation, and rating precision is remarkably improved.

This invention discloses a non-contact measurement method and system for the spacing between rope and net nodes using a multi-sensor combination, relating to the field of big data processing. The method includes: establishing a multi-source measurement benchmark by integrating a binocular camera, LiDAR, infrared thermal imager, and tilt sensor; collecting spatiotemporally aligned data and fusing feature extraction, spatial registration, and a voting mechanism to achieve preliminary positioning of the rope and net nodes; obtaining the three-dimensional coordinates of the nodes through weighted least squares by combining sub-pixel coordinates, point cloud transformation, and quaternion pose compensation; constructing the rope and net topology using K-nearest neighbors, Hough transform, and graph theory, and calculating the initial spacing after selecting paired nodes; evaluating the standard deviation based on multiple sets of data, quantifying environmental errors, and using neural network compensation to obtain the measurement results of the rope and net node spacing. The advantages of this invention are: achieving non-contact, high-precision measurement of rope and net node spacing through multi-sensor fusion, spatiotemporal synchronous calibration, and intelligent multi-feature matching, while also possessing high anti-interference capability and scene adaptability.

The application discloses a texture direction detection method based on texture detection technology fusion, comprising the following steps: S1, performing image conversion and denoising processing on a color image to generate a gray image; S2, counting the pixel number of different gray levels in the gray image to obtain a gray distribution graph, and obtaining a first texture direction according to the gray distribution graph; S3, extracting edge information in the image to obtain a gradient amplitude graph, and generating a clear edge image according to the gradient amplitude graph; S4, extracting a second texture direction of the edge image according to Hough transformation; S5, performing spectral analysis on the image to obtain a spectral representation of the image, calculating the amplitude spectrum of the spectrum to obtain a third texture direction; and S6, fusing the first to third texture directions to obtain a final texture direction. Through the fusion of multiple detection technologies, the shortcomings of a single method in processing different texture types, noise levels and complexities are solved, and a more comprehensive and robust texture direction detection scheme is provided.

The invention belongs to the technical field of overhead line system inspection, and particularly relates to an overhead line system 1C and 4C comprehensive intelligent inspection trolley which comprises a trolley body, a data acquisition device and a data processing device. Wherein the data acquisition device synchronously acquires point-shaped observation information and image observation information along a contact network corridor in the advancing process of the trolley body, and a uniform corridor reference graph is jointly formed by a track center line, a track surface reference plane, a lead reference belt and a pillar calibration point row; and the data processing device adopts a domain Hough transform and relation backfill algorithm guided by the corridor reference graph to identify and position the contact network positioner, the dropper and the section insulator under the constraint of the corridor reference graph, and finally generates a positioning drop point and a stable pose of a corresponding target in the corridor reference graph. According to the method, the detection precision, stability and processing efficiency are effectively improved, the manual intervention requirement is reduced, and the maintenance quality and operation efficiency of the railway contact network are remarkably improved.

The invention belongs to the technical field of image processing, and particularly discloses a scanned document integrated layout regularizing method based on image analysis. According to the method, an integrated processing framework is constructed aiming at the problems of flow splitting, insufficient precision, color distortion and the like in the existing scanning document processing technology. Through the steps of image graying preprocessing, stain detection and removal fused with a Canny operator and connected domain analysis, tilt correction based on Hough transform and bilinear interpolation, color optimization combined with an unsharpened mask and the like, the quality of a scanned document image is automatically repaired and improved.

The invention discloses a DEM rapid updating method and system based on minimum elevation difference mosaic, and belongs to the field of DEM dynamic updating, and the method comprises the steps: obtaining and processing natural resource monitoring data and regional historical DEM data; dEM change areas are extracted based on land type change rules, and pattern spots meeting area requirements are screened to serve as to-be-updated areas; generating a point cloud through dense matching of aerial triangulation achievements of the aerial image, and making a new DEM of a change area through processing; plane matching of the new DEM and the historical DEM is achieved through a SiftGPU, Hough transform and a UMEYAMA algorithm; setting a buffer area for a change range, calculating an elevation difference weight, generating an optimal mosaic line by using a minimum cost path algorithm, and implementing two-stage DEM seamless mosaic through feathering; and verifying the updated DEM precision based on field actual measurement points. The method and the system do not need a large amount of manual editing, and can improve the DEM updating efficiency.

The invention relates to the technical field of medical image processing, in particular to a CBCT image-based root canal system three-dimensional reconstruction and isthmus region identification method and system, and the method comprises the steps: obtaining CBCT original image data; the CBCT image is preprocessed; performing root canal system three-dimensional reconstruction on the preprocessed CBCT image; carrying out clustering segmentation based on a differential geometry theory on a root canal cross section in a three-dimensional reconstruction result of the root canal system so as to extract isthmus region features; the clustering segmentation based on the differential geometry theory comprises curvature flow driven super voxel segmentation, ellipse fitting and long axis extraction on a Riemannian manifold, and isthmus region feature extraction combining a geodesic distance field and Hough transformation; according to the method, the differential geometry theory is introduced, so that accurate identification of the root canal isthmus region is realized, the identification accuracy is improved, and the success rate of root canal treatment is remarkably improved.

The present invention discloses a nighttime highway lane line detection method based on reflective road studs. Based on a high-quality nighttime front image acquisition system, setting a region of interest for lane line detection, performing image segmentation with an adaptive threshold, and extracting target pixel points of the reflective road studs, the reflective road stud pixel points in the region of interest are expanded using morphological operations. On this basis, left and right lane line fitting regions are divided according to the positions of bright blocks of the reflective road studs. Hough transform is used to perform straight line fitting in each of the left and right lane line fitting regions to extract the left and right lane lines. Safety thresholds for the slopes of the left and right lane lines are set. If the lane line slopes are not within the safety threshold range, a lane line deviation alarm is issued. This effectively improves the effectiveness of lane line detection in nighttime environments and enhances driving safety.