101 results about "Real size" patented technology

The invention discloses a 6D pose estimation method and system based on an RGBD camera, and relates to the technical field of computer vision processing. Calibrating camera parameters based on the calibrated camera imaging; reconstructing a three-dimensional model and constructing a data set; segmenting the target object and calculating the actual size based on the three-dimensional model and the data set; establishing a 6D pose estimation network model based on the three-dimensional model and the data set; and performing pose estimation based on the actual size. The method has the advantages that the accuracy of 6D pose estimation is remarkably improved by combining the RGB image, the depth image and the point cloud data, object region segmentation is performed by using the SAM model, the actual size of the object is visually calculated by combining the depth information and the point cloud data, the precision of size estimation is improved, and the method is suitable for popularization and application. The introduction of depth information enables the pose estimation system to have better adaptability to objects with different sizes, shapes and surface features, and improves the robustness and accuracy of the system.

According to the pile foundation pile sinking monitoring method, device and equipment and the storage medium, the pile foundation pile sinking image is obtained through the collecting equipment arranged at the preset position, the pile foundation pile sinking image comprises the to-be-monitored pile foundation, and the to-be-monitored pile foundation is provided with a pile body scale; calculating the actual size of a unit pixel according to the pile body scale so as to determine a vertical pixel calibration value; according to a preset mark point and the vertical pixel calibration value, pile foundation pile sinking parameters are determined; and the pile sinking parameters of the pile foundation are input into a bearing capacity prediction model, and the predicted bearing capacity of the to-be-monitored pile foundation is obtained. The image acquisition device arranged at the preset position is used for acquiring the pile sinking image of the pile foundation in real time, pixel calibration is carried out in combination with the pile body scale, and key parameters in the pile sinking process of the pile foundation can be accurately calculated, so that a reliable basis is provided for prediction of the bearing capacity of the pile foundation, the monitoring precision and efficiency are greatly improved, and the cost is reduced. And errors possibly caused by manual measurement are avoided.

The invention belongs to the technical field of aircraft design, and discloses an airfoil structure virtual test loading analysis method based on digital simulation, which comprises the following steps of: firstly, carrying out detail finite element modeling according to an airfoil structure digital model, the attribute of the connecting piece is calculated and assigned according to the simplification principle of a bush unit, and the center coordinate of a loading point is determined according to the position of an adhesive tape or a pull-press block in the test partial load scheme; simulation analysis is carried out after loading is completed, loading is carried out according to the initial load direction, the load is discretized to a single loading point, then the single loading point is recorded, coordinates of a center node of the loading point and coordinates of an actuator connecting point after deformation are obtained, then the direction of a loading vector is obtained, all loading points of the simulation model are loaded, and a simulation result is obtained. After analysis is carried out, linear / nonlinear static force, buckling and post-buckling calculation is carried out; analyzing a stress-strain identification test risk position according to a calculation result, and pasting a strain gauge. The method can guide the design of a loading scheme in an airfoil structure test, improves the calculation precision, recognizes the test risk, avoids the loss of a test piece, and reduces the test cost.

The invention relates to the technical field of machine vision, in particular to a precision part size automatic detection method and system based on machine vision, precision part images are collected through a high-precision industrial camera, part positioning is carried out, sub-pixel-level topological feature mapping is carried out on interested area images, and precision part size automatic detection is carried out. Comprising the steps of gray histogram equalization, gray morphological processing, edge detection and edge chain code tracking, construction of an edge point topological feature space, execution of sub-pixel subdivision, obtaining of an edge line through contour analysis of a feature distance and a feature angle, and double-constraint geometric reconstruction based on the edge line. The characteristic distance and the characteristic angle are used for rotation matrix conversion and geometric dimension calculation, a relation model of the geometric dimension and the actual dimension of the part is established, precise part dimension measurement is achieved through dynamic error analysis and compensation, the measurement precision is remarkably improved, the risk caused by unreliability of a single characteristic is effectively reduced, and the measurement accuracy is improved. And the measurement stability is improved.

A model and its establishment method and system, a compensation method, equipment and a storage medium, the establishment method comprises the following steps: providing a test layout, including a test pattern, including a plurality of test points; obtaining the initial pattern density of each test point according to the test pattern; taking any test point as a feature point, obtaining the effective pattern density of the feature point according to the initial pattern density of each feature point and the influence of the initial pattern density of the plurality of test points located around the feature point on the feature point, wherein the influence degree of the initial pattern density of the plurality of test points around the feature point on the feature point is set anisotropically; obtaining the actual size deviation corresponding to the feature point; obtaining the estimated size deviation of the feature point; judging whether the estimated size deviation meets the preset condition according to the estimated size deviation and the actual size deviation; when the estimated size deviation meets the preset condition, the establishment of the etching deviation compensation model is completed. The etching deviation compensation model is more accurately established.

The invention relates to the technical field of data processing, and discloses an engine mold size obtaining method and system based on a scanner. According to the method and system, design parameters and initial data of the mold are accurately recorded through an input module, normalization and traceability of the design process are ensured, the mold is comprehensively scanned through a high-precision full-size scanner, actual size data of the mold can be rapidly obtained, errors and uncertainty caused by manual measurement are eliminated, and the accuracy of the mold design is improved. Through an advanced contrastive analysis algorithm, the system can quickly identify the deviation between the actual size and the design size, and timely highlights the part exceeding the tolerance range, so that design engineers can conveniently carry out targeted improvement and correction, and the process not only improves the accuracy of mold size acquisition, but also improves the production efficiency. And the detection and correction time is greatly shortened, and the production efficiency is improved, so that the overall production quality of the mold is effectively improved, and the manufacturing cost is reduced.

The invention discloses a response analysis method and device for a semi-submersible ocean platform, electronic equipment and a medium, and can be applied to the technical field of ocean structure engineering. According to the method, after the three-dimensional numerical pool is constructed and the semi-submersible type ocean platform model is constructed according to the actual size of the semi-submersible type ocean platform, the numerical pool calculation model of the semi-submersible type ocean platform is constructed according to the three-dimensional numerical pool and the semi-submersible type ocean platform model; then, a fluid domain in the numerical pool calculation model of the semi-submersible type ocean platform is updated in real time according to a dynamic grid algorithm, the real-time boundary position of the semi-submersible type ocean platform model is obtained, and the real-time mooring force of the semi-submersible type ocean platform is simulated according to the rigidity of the mooring cable and the real-time boundary position; therefore, the calculation precision and the calculation efficiency can be improved, then the dynamic response result of the semi-submersible type ocean platform is obtained through calculation according to the real-time mooring force, the real-time sea condition data and the numerical pool calculation model, and the dynamic response of the semi-submersible type ocean platform under various sea conditions is effectively analyzed.

The invention discloses an analysis method for a design image of a power transmission tower. The analysis content comprises information extraction of shape, parameterization, layout and the like of a design structure. Firstly, an original design drawing is converted into a clean topological mask drawing through a semantic segmentation network, and the shape of a design structure is obtained; then, through a vector extraction network, extracting a skeleton center vector and endpoint information from the topological mask map; then, numbers and symbols on the image and in the table are recognized and extracted, corresponding numbers beside the mask image are numbered, the same numbers are found in the table, the actual size corresponding to the numbers is obtained, and parameterization assignment of the actual size of the shape vector is achieved; and finally, constructing a visual angle classification network, analyzing the image layout of each shape, and obtaining the visual angle orientation of the three-dimensional model corresponding to the planar graph. The method lays a foundation for realizing automatic three-dimensional modeling of the drawing, and can be expanded to be used for intelligently verifying, improving and checking the design drawing of the iron tower and the like.

The invention discloses a large building concrete column radius construction measurement control method, and relates to the technical field of linear dimension metrology, and the method comprises the specific steps: parameter collection, data collection, model construction, real-time correction and strategy adjustment. Corresponding sensing equipment is arranged in a construction area to collect related associated data and form a real-time parameter set, meanwhile, original historical data of projects of the same type are collected and screened and classified to form a historical parameter error set, so that a linear size error correction model is constructed, influence rules of various associated data are determined, and the accuracy of the linear size error correction model is improved. And substituting the real-time parameter set into the linear size error correction model to obtain a radius measurement error compensation value, and dynamically correcting original radius measurement data, so that historical engineering experience and real-time field information are fully fused in the measurement process, multiple types of influence factors are accurately counteracted, and the measurement accuracy is improved. And the measurement result can truly reflect the actual size state of the concrete column body.

The invention provides a turbine disc mistake-proof machining method and device, electronic equipment and a storage medium, and relates to the technical field of automatic control, the method comprises the steps that the target size, the actual size, the material hardness and machining environment parameters of a turbine disc are obtained, and a deviation compensation value is determined according to the target size and the actual size; calling an error-proofing subprogram, preliminarily judging whether the deviation compensation value is abnormal or not according to the static threshold range, and when the deviation compensation value is abnormal, returning to execute the step of determining the deviation compensation value according to the target size and the actual size until a new deviation compensation value is normal; when the deviation compensation value or the new deviation compensation value is normal, determining an initial dynamic threshold range according to the material hardness and the processing environment parameters; and adopting a hybrid neural network model, optimizing the initial dynamic threshold range according to the processing environment parameters, generating a final dynamic threshold range, and secondarily judging whether the deviation compensation value or the new deviation compensation value is abnormal or not. Normal machining can be guaranteed.

The invention discloses a building model inner path planning method and system based on IFC embedded information, and belongs to the technical field of building model application, and the method comprises the steps: 1, building a building model and embedded node information; a step; 2, exporting a file which contains embedded node information and is in an IFC format; step 3, uploading and primarily processing the IFC file; step 4, IFC file analysis and data extraction; 5, processing and formatting the analysis data; step 6, constructing a reachability network diagram; 7, the user selects a starting point, an ending point and the size of a transported object; step 8, searching a path based on size limitation; step 9, outputting a path result; step 10, carrying out path visualization; according to the building model internal path planning method and system based on IFC embedded information provided by the invention, the problems that data and a BIM model are disjointed in an existing building internal path planning method, and actual size limitation and data maintenance invariability are difficult to effectively consider are solved.

The invention relates to the technical field of high-precision assembly of an LED die bonding process, in particular to a steel mesh and PCB size matching dynamic mapping method and device, and solves the problem of matching failure caused by size change of a steel mesh. The method comprises the following steps of: selecting a PCB (Printed Circuit Board) product of which the stability meets a preset condition after solder paste printing is completed from the current production, and calculating by extracting solder paste images at four corners of the PCB product to obtain the actual size data of the current screen; matching a to-be-matched PCB with the screen plate based on the actual size data of the current screen plate; and when a preset screen data updating condition is met, re-selecting the printed PCB product meeting the preset condition from the current production, extracting the solder paste images at the four corners of the PCB product to update the actual size data of the screen, and continuing to match the subsequent to-be-matched PCB with the screen based on the updated actual size data.

The utility model discloses the technical field of machining measurement device, more specifically discloses a kind of for the size measurement tool of incomplete circle, comprising: tool main body, detachably set on part;Compensation component, set on tool main body, can be synchronous with the arc to be processed Machining;Wherein, the straight line of the center of the arc to be processed of compensation component and arc to be processed can pass through arc to be processed;Measuring component is used to measure the diameter between compensation component and arc to be processed;By using the utility model, arc can be measured in real time during processing, cancel the use of radius gauge and three-dimensional coordinate instrument;Greatly reduce the difficulty of real-time measurement arc actual size in part processing process, improve the arc size measurement stability and accuracy, can effectively improve the product quality and stability of part.

The invention discloses a product quality detection method capable of adaptively adjusting a feature fusion layer. The method specifically comprises the following steps: collecting a data set containing targets of various sizes; selecting two target detection networks with the same architecture as a basic model; wherein a layer of check is added to one model for enhancing detection of a small target; pre-training the two models respectively; putting each image into the two models for detection, and respectively obtaining results with relatively high detection precision and selection accuracy; and recording the corresponding model, determining the size information of each data in the data set, and obtaining a feature size interval for detecting the two models according to the precision comparison. According to the method, by introducing a target size identification and self-adaptive adjustment strategy, the number of feature fusion layers can be dynamically adjusted according to the actual size of the target in the input picture, and the optimal detection effect can be achieved under the targets of different sizes.

The invention discloses a customized micro-pipettor fluid modeling method, equipment and medium for organoid operation, and belongs to the technical field of micro-pipettor modeling. The invention aims to solve the problem that the motion law of internal fluid is not accurately described due to the deviation of the existing fluid model description method of the customized micro pipettor. The method comprises the following steps: acquiring a micro-pipettor source image and processing to obtain a micro-pipettor main body contour; carrying out pose correction on the main body contour; performing polynomial fitting to obtain a main body contour fitting curve under a rectangular coordinate system, and converting the main body contour fitting curve into a geometric model of the customized micro pipettor with an actual size; performing fluid static and dynamic simulation by using the geometric model, and obtaining a theoretical fluid flow velocity rule of the customized micro pipettor according to a simulation result; performing a fluid tracking experiment by using microbeads to obtain an actual fluid flow velocity rule; and verifying the theoretical fluid flow velocity rule by adopting an actual fluid flow velocity rule, and obtaining a finite element fluid simulation model based on a verification result. The method is used for fluid modeling of the micro pipettor.

A method for determining estimated real dimensions of an elevator car by: acquiring a virtual 2-dimensional map of the car based on data provided by a lidar sensor, the map representing reflection surfaces from which laser light emitted by the sensor is reflected; defining a rectangular starting area at a position located within the real dimensions of the car; successively extending the area by one pixel in each of four extension directions orthogonal to edges of the area, and when any pixel in one of the extension directions corresponds to one of the reflection surfaces in the map, stopping extending the area in this extension direction and successively extending the area by one pixel in each of the remaining extension directions the area is extended to a maximum in all the extension directions; and determining the fully extended rectangular area as the estimated real dimensions of the car.

The invention relates to a visual dimension conversion method, which is characterized by comprising the following steps of: 1) arranging a plurality of longitudinal and transverse scales on a mold table in a vision field of a camera, and arranging scales on the scales; (2) placing an object to be measured on a mold table, and then taking a picture by a camera; and 3) taking a picture, and comparing the to-be-measured object in the picture with the nearest scale to obtain a real size. According to the method, a picture object is compared with the nearest scale, the scale is enabled to distort along with the lens, so that the correct size of the object in the image can be obtained even if the object distorts, a distortion correction algorithm is not needed through the method, the method can be applied to a large image scene, a complex algorithm is abandoned, and the method is easy to implement. And the obtained numerical value is more reliable.

The present invention relates to the technical field of data processing, and provides an error compensation method, device, equipment and storage medium for machining shaft parts, including obtaining measurement data of the actual size of shaft parts, and calculating deviation data, inputting the measurement data and deviation data into a preset neural network compensation model, obtaining compensation parameters and processing stability parameters, adjusting the path of the machining tool based on the compensation parameters, obtaining target path machining instructions and performing spectrum analysis, obtaining corrected instructions and checking them through machining stability parameters, and machining the shaft parts after obtaining the target machining instructions. By measuring the actual size of shaft parts and calculating deviations, adjusting the machining path in combination with the neural network compensation model, optimizing the machining instructions using spectrum analysis technology, improving the inability to cope with errors that are dynamically changing during machining and the tremor that is prone to occur during machining, the difficulty of part compensation is aggravated, and there is a problem of insufficient real-time error correction.

The invention provides a method for restoring internet map vector tile data to construct a real geographic position three-dimensional scene, computer equipment and a computer program product, is suitable for the technical field of model modeling, and restores real geographic coordinates by reversely calculating a matrix coordinate range of tiles, so that the real geographic position three-dimensional scene is constructed. Offset errors generated by encryption of a map service provider are eliminated; splicing the fractured vector elements in a cross-tile manner, and recovering the original topological integrity of the fractured vector elements; real parameters are reversely mapped based on semantic tags, and high-precision three-dimensional modeling is driven; and based on the target geographic coordinate system, generating and outputting the three-dimensional model of the real size, and ensuring that the three-dimensional scene is strictly aligned with the real world position. Therefore, the problem of geographic information distortion caused by slicing, offset and simplification of the Internet vector tile data is solved. Finally, a high-fidelity three-dimensional geographic scene is automatically constructed at low cost, and professional application is supported.

The invention discloses a rapid ordering method for special-shaped hotel guest room decoration plane materials. The method comprises the following steps: counting room categories; scanning point cloud data; drawing room contour data; room size generality carding is carried out; room finish surface net size fixed value and variable rule making is carried out; a line drawing is drawn based on contour and target real size data; rapid decoration modeling is carried out based on BIM; the special-shaped hotel room decoration ordering method has the beneficial effects that the efficiency and precision of special-shaped hotel room decoration ordering can be greatly improved, manual measurement errors are reduced, the specification and size consistency of decoration materials is ensured, and a reliable method and tool are provided for rapid and efficient decoration of special-shaped hotel rooms; in addition, improvement and adjustment can be carried out according to actual requirements, and point cloud scanning precision, a target setting method, BIM software selection and the like are optimized according to different building structure and decoration requirements so as to adapt to wider application scenes.

The invention provides a method for predicting and improving the height uniformity of an electroplated conductive column. A three-dimensional simulation model of an electroplating process of a target product is built according to the actual size of the target product and is imported into simulation software to determine a control equation and boundary conditions, and the control equation and / or the boundary conditions are optimized to obtain an electroplating height uniformity prediction model of the target product and a height uniformity improvement model of an electroplating conductive column; a target product is improved according to the height uniformity improvement model of the electroplated conductive column, and a large number of real electroplating processes can be avoided, so that the cost of electroplating liquid medicine, a test board and other materials is effectively saved, and the manufacturing cost is reduced; in addition, the uniformity design modification efficiency of the electroplated conductive column can be improved, and the time cost is saved; and moreover, electroplated conductive column products can flow to the market more quickly, and the income is improved.

The invention discloses a target object measurement method based on monocular vision, and relates to the technical field of target object measurement, and the method comprises the steps: carrying out the Gaussian filtering and Canny edge extraction of an image, and obtaining an angular point sequence through high-precision polygon approximation; and then traversing each angular point, calculating an included angle of adjacent vectors, identifying angular point pairs conforming to right-angle characteristics, further calculating a pixel side length and selecting a minimum value, and finally converting the pixel side length into an actual size through a calibration proportion. According to the method, the internal independent square structures can be separated and positioned from the visually connected complex contours by detecting the continuous right-angle characteristics from the angle of basic geometric attributes of the graph; according to the mechanism, the false recognition rate of overlapped and adhered targets is reduced, so that reliable and fine graph analysis capability is provided in a scene containing dense and staggered graphs.

The invention relates to a method for optimizing dimension chain models of sub-parts of a product assembly. The method comprises the steps that the dimension chain models of all the sub-parts are constructed based on three-dimensional geometric data, assembly process parameters and measurement dimension data of the sub-parts; determining simulation size data of the size chain model of the product assembly obtained by assembling the sub-parts based on the size chain model of the sub-parts; measuring actual size data of a product assembly obtained by assembling the sub-parts; and correcting model parameters of the dimension chain model of the sub-part based on first deviation data between the simulated dimension data and the actual dimension data of the product assembly. According to the method and the device, the difference between the simulation size data and the actual size data of the product assembly is reduced in an accelerated manner in a pilot production stage or a product development and debugging stage, the actual size data of the product assembly can meet the dimensional tolerance of the size chain model after less times of tests, the dimensional accuracy of the product assembly is effectively improved, and the product assembly is more accurate. And the problem of size out-of-tolerance in the sub-part assembling process is reduced.

The present application discloses a dimension calibration method, a dimension calibration device and a computer-readable storage medium, the method comprising: obtaining multiple surveillance images of the same surveillance scene; determining the historical pixel size and the current pixel size based on the surveillance images, the current pixel size being the pixel size of the mobile target in the current surveillance image, the historical pixel size being the pixel size of the mobile target in the historical surveillance image before the current surveillance image, the mobile target in the current surveillance image being of the same category as the mobile target in the historical surveillance image and being located at the same position; respectively using the historical pixel size and the current pixel size to obtain the historical actual size of the target to be calibrated and the current actual size of the target to be calibrated; correcting the current actual size based on the historical actual size to obtain the corrected actual size. In the above manner, the present application can improve the accuracy of dimensioning and has a wide range of applications.

The application discloses a kind of digital processing method of space special-shaped curtain wall decorative panel, panel and construction method, including based on modeling graphics, along the contour edge of decorative panel, draw sorting guide line;Determine the geometric center of each panel, and make relative position mark;The position of the geometric center of each described panel is unchanged relative to the sorting guide line, the sorting guide line is converted into straight line, while several described geometric center is flattened into dot matrix graphics;After flattening dot matrix graphics and straight line state sorting guide line are projected into the same plane in world coordinate system, and according to actual size, etc. Enlargement, get flattened plane graphics;Each described panel is placed in flattened plane graphics according to original position distribution one-to-one correspondence, and get processing graphics. Numerous panel individuals can be block linked, the relative position of each panel and arrangement mode are determined, to be more beneficial to processing and arranging, so as to improve panel utilization and reduce material cost.

The invention discloses a 2.5 D multilayer cost map generation method and device based on laser point clouds, equipment, a medium and a product, and relates to the field of map construction.The method comprises the steps that laser radar point clouds are obtained, a static point cloud map is constructed, and then a two-dimensional grid map is obtained; calculating the elevation value of each grid in the two-dimensional grid map to obtain an elevation map; calculating the passability cost of each grid, and obtaining a passability cost map based on the passability cost; according to the actual size of the target vehicle, the passable cost map is expanded in a gradient expansion mode to obtain an expansion cost map; based on the expansion cost map, evaluating the trafficability of the passable area by adopting a distance transformation function to obtain a directed distance map; and finally, generating a 2.5 D multi-layer cost map based on the various maps. The three-dimensional perception advantage of the three-dimensional environment is reserved, the calculation dimension is remarkably reduced, and efficient support is provided for follow-up real-time path planning and dynamic obstacle avoidance.

The invention provides a high turbulence level pressure distortion simulation method based on an acceleration principle. The method comprises the following steps: step 1, carrying out acceleration part design and pressure distortion part design; 2, the acceleration part and the pressure distortion part are combined into a whole, and numerical simulation is carried out; 3, when the pressure field of numerical simulation meets the set requirement, the scaling model part is machined, and the step 4 is executed; when the pressure field of the numerical simulation does not meet the set requirement, the pressure distortion part is adjusted according to the numerical simulation result, and the second step is repeated; 4, carrying out a blowing test on the scaling model part, and obtaining parameters of an outlet flow field of the scaling model part; 5, when the parameters of the outlet flow field of the scaling model meet the set requirements, determining the real size of the pressure distortion simulation device according to the size of the scaling model; and when the parameters of the outlet flow field of the scaling model do not meet the set requirements, the acceleration part and / or the pressure distortion part are / is adjusted, and the fourth step is repeated.

The invention relates to a coating optimization method and device for a surface coating of a high-voltage electrode in GIS equipment. The method comprises the steps that a GIS model is manufactured according to the real size scaling of the GIS equipment; continuously pressurizing and electrifying the GIS model on which the coating samples with different thicknesses are placed until the coating samples are broken down; drawing a first insulation life curve corresponding to the GIS model; constructing a GIS electric field simulation calculation model; drawing a second insulation life curve of the GIS equipment; and coating optimization is carried out according to the second insulation life curve and the actual life demand. According to the method, through scaling model experiment and electric field intensity conversion, accurate prediction of the insulation life of the high-voltage electrode coating in the GIS equipment is realized; and meanwhile, on the basis of the Weibull distribution theory and MATLAB fitting, a correlation formula of the electrode coating insulation life and the surface electric field intensity under different thicknesses is obtained, so that the optimal laying scheme of the high-voltage electrode is optimized, and a guarantee is provided for the insulation stability of the GIS.

The present invention provides a method for realizing a virtual home product layout scene and a virtual reality system. The method for realizing a virtual home product layout scene comprises: creating a background image; superimposing at least one element model to be laid out on the background image, wherein the at least one element model at least comprises a three-dimensional model of a home product drawn in proportion to the actual size; obtaining user actions captured by a somatosensory device, so that the element model is arranged in the background image in a posture responsive to the user action. The present invention arranges the three-dimensional model of home products in a virtual background image by capturing user actions, which can simply and conveniently realize the user's free arrangement of home products, give full play to the user's imagination, get rid of the limitations of external conditions such as manpower and material resources, and improve the user experience.