56 results about "Reference grid" patented technology

The invention discloses a frozen soil roadbed hot melt settlement laser scanning measurement method and system, and relates to the technical field of measurement, the method comprises the following steps: obtaining gridding surface data, and obtaining an elevation data sequence of each grid point; acquiring an elevation change index of each grid point according to the elevation data sequence of each grid point; acquiring a plurality of grid points adjacent to the ith grid point and taking the plurality of grid points as a plurality of reference grid points of the ith grid point, acquiring each relative difference quantity of the ith grid point, and acquiring a correction proportion of the ith grid point according to the plurality of relative difference quantities of the ith grid point; and obtaining target elevation data of each grid point according to the correction proportion of each grid point and the measured elevation data at the current moment, and forming a measurement result including the gridding surface data according to the target elevation data of each grid point. The method has the advantages of identifying abnormal values, dynamically correcting measurement and improving data reliability.

The invention discloses an industrial art material detection method based on multi-modal deep learning, particularly relates to the field of material analysis, and is used for solving the problems that cross-modal data alignment of curved surface utensils in highlight and multi-layer coating scenes is difficult, and material boundaries are easy to drift along with shooting batches and visual directions. The method comprises the following steps of: positioning a hyperspectral line scanning fragment; constructing a local reference grid to realize initial pairing; generating pixel-level residual image quantization dislocation; estimating luminosity mapping to form consistent bimodal data pairs after eliminating a high-reflectivity region; iteratively supplementing anchor points or adjusting grid rigidity, generating a stable material graph, updating an index table and a consistency record, ensuring cross-batch reusability and traceability, and improving the material detection precision.

The invention provides a power collection system topology optimization method and device based on a variable weight minimum spanning tree, and relates to the technical field of offshore wind power topology optimization. The method comprises the following steps: grouping a plurality of fans based on the angle difference among the plurality of fans according to the position information of the offshore booster station to obtain a plurality of fan sets; a Delaunay triangulation method is adopted to construct a reference grid connecting line of each fan set; and based on the reference grid connection line of each fan set, generating the optimal topology of the to-be-processed offshore current collection system based on a variable weight minimum spanning tree algorithm. According to the method, the grouping clustering method, the Delaunay triangulation method and the variable weight minimum spanning tree algorithm are combined, and the topology design of the offshore wind plant current collection system is efficiently, economically and rapidly achieved. According to the invention, topological connection and cable specification type selection can be optimized synchronously, and a global optimal solution is sought between the cable path length and the type cost difference caused by the change of the current-carrying capacity, so that the fine control of the overall cost of the current collection system is realized.

In some implementations, a method of facilitating pointing of a mobile device at a satellite of a satellite constellation for satellite-based data communication, may comprise obtaining, at a first time point, historical orbital data indicative of orbital movement of a plurality of satellites of a satellite constellation over a period of time. The method may also comprise assigning a reference orbital dataset of the plurality orbital datasets determined at a reference time point to corresponding control boxes of a reference grid covering the satellite constellation, wherein each control box of the reference grid corresponds to a satellite of the satellite constellation. The method may also comprise mapping the plurality orbital datasets to the reference grid for an orbital model based on the assignment of the reference orbital dataset.

A method detects a spatial arrangement of a physical object by assigning an attribute to a selection of uniquely identifiable global grid elements of a reference grid network. The method includes providing a global reference grid network with a geographical reference point defined vector-object-independently and global grid elements, which are adjacent to one another without overlap and are uniquely identifiable within the global reference grid network and are georeferenced with regard to a provided reference coordinate system, providing a vector object with at least one vertex, to which a geographical coordinate of the geographical reference coordinate system is assigned, determining and selecting those global grid elements that overlap with the vector object, and assigning an object attribute linked with the vector object or a further attribute to the grid elements selected and storing the selected grid elements with assigned attributes.

The invention belongs to the technical field of building tools, and discloses a grating type wall brick laser pay-off device which comprises a supporting mechanism, an adjusting mechanism is installed on the supporting mechanism, an optical mechanism is installed on the adjusting mechanism, and the supporting mechanism is used for providing stable support for the whole device and can adjust the height of the optical mechanism. The adjusting mechanism is used for achieving horizontal calibration, vertical calibration and distance calibration with a to-be-constructed wall face on the optical mechanism, and the optical mechanism is used for conducting projection on the to-be-constructed wall face to form clear and straight wall brick laying reference grid lines with the uniform distance. Through the coaxial optical design of the laser, the five-time Galileo beam expanding lens, the DOE grating and the plano-convex lens and the multi-dimensional accurate calibration of the adjusting mechanism, it is ensured that wall tiles, floor tiles and suspended ceilings are accurately crossed and jointed, internal and external corners are straight, and the pain point that traditional paying-off precision is insufficient is solved.

The application relates to a facial expression recognition-based method and system for evaluating anxiety of children in dental treatment. The method comprises the following steps: acquiring a three-dimensional facial point cloud sequence, a two-dimensional micro-expression texture image sequence and a bone conduction audio signal sequence in the process of dental treatment of children; performing point cloud cleaning and three-dimensional reference grid reconstruction on the three-dimensional facial point cloud sequence to obtain a geometric base grid sequence, and performing texture mapping to obtain a texture-mapped three-dimensional face grid sequence; extracting an acoustic feature sequence, a facial action unit intensity sequence and a facial micro-motion intensity sequence; normalizing the data before treatment as a calibration baseline to obtain a relative action unit intensity sequence and a relative micro-motion intensity sequence; performing multi-modal fusion to obtain a continuous emotional disturbance index; grading to obtain a dynamic Frankel behavior scale result, calculating an individualized fear survey score, and fusing to obtain a dental treatment anxiety index of children. The method can realize dynamic evaluation of dental treatment anxiety of children and improve the accuracy of anxiety evaluation.

This invention provides a pallet picking method, apparatus, and electronic device. The method includes determining a first detection result corresponding to a target pallet, the first detection result being determined based on the number of first laser points falling into each reference grid in a reference grid map; determining a second detection result corresponding to the target pallet, the second detection result being determined based on the number of second laser points falling into each reference grid in the reference grid map; and determining whether to continue picking up the target pallet according to the socket boundary recognition result based on the first detection result and the second detection result. This solution can automatically detect whether there are abnormalities in the pallet and its goods, such as pallet and goods positional shifts caused by forklifts hitting the goods, or pallet abnormalities caused by ground hole collapse, effectively avoiding pallet positional shifts or goods hitting caused by inaccurate positioning, low picking accuracy, or other situations, thus increasing the safety of pallet picking.

The application relates to the technical field of aero-engine blade repair, and particularly discloses a variable cross-section blade remanufacturing repair model acquisition method and a blade detection tool, which comprises the following steps: S1, collecting point cloud data of different variable cross-section blade new parts, and establishing a variable cross-section blade point cloud model; S2, acquiring a reference grid model in a weighted average manner according to the point cloud model in S1; and S3, reconstructing the reference grid model in S2 to obtain a variable cross-section blade remanufacturing repair model. The method can improve the precision of the variable cross-section blade remanufacturing repair model, and a blade detection tool can be designed and manufactured based on the obtained remanufacturing repair model, so that the blade type and size data of the variable cross-section blade can be detected during the repair process, the blade repair quality is improved, and the repaired blade can meet the aerodynamic requirements of the engine blade type.

The invention relates to a Lucas-Kanade optical flow distortion detection method based on feature extraction. The method comprises the following steps: when a transparent part to be detected is not placed, putting a grid plate in front, and shooting the grid plate by using a camera to obtain an undistorted grid image; carrying out downsampling on the reference grid and the distortion grid at the same time, then extracting feature angular points from the reference grid and the distortion grid respectively, and carrying out deformation field calculation corresponding to the points; and mapping a calculation result to an original image layer, and carrying out secondary optical flow calculation to obtain an accurate deformation field so as to calculate optical flow distortion. The measurement method is simple, easy to operate and high in measurement speed, and solves the problems that the measurement speed is low and the measurement precision is poor when the optical distortion of the heterogeneous composite transparent part is measured.

Disclosed are systems and methods for a computerized framework that provides novel mechanisms for determining the automatic placement of a reference grid and an anatomical reference frame (ARF) of a bone. The disclosed framework is operational for the enablement of computerized mechanisms that, based on a three-dimensional (3D) model of a distal femur, can determine, provide and / or display the anatomically correct positions of femoral tunnels and / or other forms of surgical landmarks surgeons rely on for anterior cruciate ligament (ACL) procedures. The disclosed framework is also operational for the enablement of computerized mechanisms that, based on a three-dimensional (3D) model of a proximal tibia, can determine, provide and / or display the anatomically correct positions of tibial tunnels and / or other forms of surgical landmarks surgeons rely on for ACL procedures.

The embodiment of the invention relates to the field of data processing, and provides a power grid frequency control method of a small hydroelectric generating set and a related device, and the method comprises the steps: obtaining the current frequency of the small hydroelectric generating set, and obtaining a reference network access frequency interval of a small hydroelectric generating set microgrid where the small hydroelectric generating set is located; if the current frequency is not in the reference network access frequency interval, acquiring current water inflow and environment water quantity information of the small hydropower generating set; determining a reference frequency adjustment parameter according to the frequency offset between the current frequency and the reference network access frequency interval and the operation state information of the micro-grid of the small hydroelectric generating set; frequency adjustment correction parameters are determined according to the current water inflow and the environment water quantity information; performing correction processing on the reference frequency adjustment parameter by adopting the frequency adjustment correction parameter to obtain a target frequency adjustment parameter; and performing frequency adjustment on the small hydroelectric generating set by using the target frequency adjustment parameter, thereby improving the accuracy of determining the frequency adjustment parameter.

The invention discloses a dynamic grid encoding and decoding method and device, an encoder, a decoder and a system, and relates to the field of multimedia. The method comprises the steps that a grid obtained by filtering a reconstructed grid of an encoded grid is used as a reference grid, and due to the fact that the reference grid obtained by filtering the reconstructed grid is closer to the encoded grid, the error between the reconstructed grid and the encoded grid corresponding to the reconstructed grid is reduced; the reference grid obtained by filtering the reconstructed grid is utilized to predict the dynamic grid, the prediction result is more accurate, the dynamic grid to be coded is coded according to the prediction result to obtain the code stream, the grid can be represented by using as little data as possible, and thus the code rate is reduced. The grid obtained by filtering the reconstructed grid of the decoded grid is used as the reference grid, and the reference grid obtained by filtering the reconstructed grid is used for decoding and reconstructing the dynamic grid, so that the obtained reconstructed grid is more accurate.

The invention discloses a real-time people flow density monitoring and dynamic early warning method based on multi-source data fusion, and relates to the technical field of monitoring and early warning. The method comprises the following steps: constructing a digital grid map, carrying out space-time alignment on multi-source data, and dynamically calculating vision and signal confidence according to the physical coverage state of a sensor in each grid, so as to distinguish a calibration reference grid and a grid to be calibrated; and the density estimation value of the signal dominant grid is dynamically corrected by using a reference conversion coefficient calculated in real time in the reference grid, early warning is triggered by calculating the residual bearing capacity pressure difference between the abnormal high-density grid and the peripheral grid, and a dredging instruction pointing to the high-residual bearing capacity grid is automatically generated. Through dynamic calibration transmission and pressure difference diversion based on gridding data confidence, the effects of sensing people flow density with high precision and generating an intelligent dredging instruction in a shielding environment are realized, and the problems of insufficient monitoring precision and disjunction of early warning and dredging in a complex environment in the prior art are solved.

This application discloses a decoding method, an aircraft, and a storage medium, which can improve the decoding accuracy of images containing beacons when the beacon is occluded by shadows. The decoding method includes: acquiring an image containing the beacon and dividing the image into M*N grids; acquiring the average pixel value of the pixels contained in each of the M*N grids; designating any grid in the image as a first reference grid; determining the decoding result of the first decoding grid based on the decoding result of the first reference grid and the relative magnitude of the average pixel values ​​of the first decoding grid adjacent to the first reference grid in the target direction; using the first decoding grid as a second reference grid; determining the decoding result of the second decoding grid based on the decoding result of the second reference grid and the relative magnitude of the average pixel values ​​of the second decoding grid adjacent to the second reference grid in the target direction; and obtaining the decoding results of each grid in the image.

The application discloses a three-dimensional model alarm position determination method and device applied to a tobacco packaging equipment. The method comprises the following steps: based on a three-dimensional model of the tobacco packaging equipment, a three-dimensional display scene is constructed and model display parameters are configured; a plurality of unpositioned alarm marker points are pre-generated, and each alarm marker point is bound with the equipment alarm information in a preset storage library in one-to-one mapping; a reference grid of each alarm marker point is constructed in the three-dimensional display scene, and the space position of the reference grid in the X, Y and Z three-axis directions is adjusted through an interface control component; a click operation of a user on the reference grid is received, the two-dimensional coordinates of the click position are acquired, a space ray starting from a viewpoint is generated based on a ray casting method, and the intersection point coordinates of the space ray and the reference grid are calculated, and the intersection point coordinates are determined as the three-dimensional space position of the corresponding alarm marker point. The technical scheme provided by the embodiment of the application can effectively improve the intuitiveness and efficiency of equipment fault positioning.

This invention discloses a laser scanning measurement method and system for thermal thawing settlement of frozen soil subgrade, belonging to the field of measurement technology. The method includes: acquiring gridded surface data and acquiring elevation data sequences for each grid point; acquiring elevation change indices for each grid point based on the elevation data sequences; acquiring multiple grid points adjacent to the i-th grid point and using them as multiple reference grid points for the i-th grid point, acquiring relative differences for each i-th grid point, and acquiring correction ratios for the i-th grid point based on the relative differences; acquiring target elevation data for each grid point based on the correction ratios and the measured elevation data at the current moment, and forming a measurement result including gridded surface data based on the target elevation data of each grid point. This invention has the advantages of identifying outliers, dynamically correcting measurements, and improving data reliability.

The invention relates to the technical field of flow field numerical simulation analysis, in particular to a flow field numerical simulation analysis method and system for a flash evaporation angle type flow regulating valve. The method comprises the following steps: acquiring basin initial data of historical simulation and the flowing speed and direction of fluid in a historical simulation process; dividing the historical simulation into scene categories based on the similar condition of the initial watershed data, and obtaining reference historical simulation according to the flow velocity and direction in the scene categories; on the basis of occurrence conditions of corresponding grid division strategies in different scene categories, simulating the reference history, and obtaining an optimal grid division strategy; and obtaining a reference grid division parameter based on the boundary condition of the reference historical simulation corresponding to the optimal grid division strategy and the grid division parameter, and further determining the grid division of the geometric model of the flash angle type flow regulating valve in the current simulation. According to the method, the optimal grid division strategy and the reference grid division parameters are obtained, so that the accuracy and robustness of numerical simulation of the flash evaporation flow field are effectively improved.

The application discloses a construction method of a generalized honeycomb power distribution network topology structure model, and particularly relates to the fields of power distribution network topology modeling and fault self-healing control technology, and is used for solving the problem of difficult convergence of power supply path reconstruction range caused by unbalanced topology model granularity, disconnection between operation constraints and topology in the fault self-healing process of a complex power distribution network, and insufficient calculation efficiency and decision traceability. A honeycomb unit satisfying homologous feeding, voltage level, protection partition and spatial adjacent constraints is constructed based on a honeycomb reference grid in a power distribution area, and a multi-layer topology structure covering a combination of a transformer substation and a feeder, the honeycomb unit and specific equipment and line sections is formed, the topology updating range under a fault scene is limited by a topology state anchor point and its influence domain, and candidate power supply paths are screened in an operation constraint field, so that the technical effects of converging the calculation range, improving the response speed and constraint satisfaction in the process of power distribution network fault isolation and power supply path reconstruction are achieved.

The present application relates to the technical field of dynamic modeling, in particular to an emergency rescue command visualization system based on dynamic modeling, which comprises: a ground surface subsidence grid establishment module, which obtains a subsidence space distribution matrix according to a current road surface source grid vertex set and a subsidence target grid vertex set; and extracts a coordinate sequence in the subsidence space distribution matrix to calculate and obtain a reference grid topology structure. In the present application, a more fine-grained patch expression is obtained for the deformation concentrated area, and the visualization recognition ability of the subsidence edge, the stretching area and the fracture trend area is enhanced; a relative coordinate smoothing matrix coefficient is constructed through a node weight value, and then combined with a Jacobian partial derivative value to obtain an absolute position parameter, so that the discrete nodes can be reorganized into connected curved surface geometric elements, further forming a subsidence evolution three-dimensional form, and improving the judgment and support ability for the subsidence development range, the three-dimensional change trend and the risk expansion direction in the emergency rescue scene.

The invention discloses a manufacturing method of a floor drawing part in a two-order character pattern, and relates to the technical field of automobile die manufacturing, and the manufacturing method comprises the following steps: scanning out the floor drawing part in a stable state, and generating STL (Standard Template Library) data; a target grid is generated through CATIA repair, and the drawing sequence working molded surface is converted into a reference grid; calculating the space position deviation between the reference grid and the target grid in AutoForm, generating a displacement vector field, and exporting the displacement vector field as a TXT format general compensation file; driving a floor drawing sequence working molded surface control point to generate spatial displacement according to the displacement vector field by utilizing CATIA to generate a reverse conformal curved surface; and outputting the curved surface when the normal distance deviation meets a preset condition. According to the method, accurate conversion from the rebound state to the parameterized molded surface is achieved through data interaction, an original curved surface topological structure is reserved, the problem that the molded surface is not attached is solved, the grinding workload of bench workers is reduced, and the mold manufacturing period is shortened.

The present application relates to the field of precision visual measurement and alignment technology, and particularly relates to an electronic vernier caliper alignment method based on a pixel of a surface array detector, comprising the following steps: S1, designing a mark plate according to the optical field of view and the pixel size of the surface array detector; S2, collecting an image and positioning a coarse alignment mark through a geometric alignment method to obtain a reference grid position; S3, performing a gray scale processing on a grid area to generate a gray scale distribution; S4, performing a definition analysis based on the gray scale distribution to determine a target grid position; S5, comparing the position difference between the target grid and the reference grid to calculate row and column offsets; and S6, performing a statistics on a plurality of offset results to obtain an overall offset amount. The present application constructs a vernier caliper alignment mechanism based on the period difference between the pixel of the surface array detector and the mark grid, and realizes a fast alignment effect with high precision, low computing power, low cost and strong adaptability without the need of complex calculation and a multi-point structure.

The invention belongs to the technical field of building decoration construction equipment, and discloses a zoom type wall brick laser pay-off device which comprises a supporting mechanism, an adjusting mechanism is mounted on the supporting mechanism, and an optical mechanism is mounted on the adjusting mechanism; the supporting mechanism is used for providing stable support for the whole device and can adjust the height of the optical mechanism; the adjusting mechanism is used for realizing horizontal calibration, vertical calibration and distance calibration with a to-be-constructed wall surface on the optical mechanism; and the optical mechanism is used for projecting to form clear and straight wall brick paving reference grid lines at uniform intervals on a to-be-constructed wall surface. Through the synergistic effect of the collimating front lens, the first-stage Galileo beam expanding lens assembly, the second-stage Galileo beam expanding lens assembly and the adjustable telecentric diaphragm, and in combination with a horizontal calibration mechanism, a vertical calibration mechanism and a spacing calibration mechanism, the wall brick paving reference grid lines can be formed; the perpendicularity, the levelness and the brick joint uniformity of laser grid lines are greatly improved, accurate circle crossing and joint alignment of wall bricks, the ground and a suspended ceiling can be achieved, and the problem that a traditional paying-off mode is large in error is solved.

The present disclosure pertains to an information processing device and method that make it possible to suppress a decrease in encoding efficiency. In the present invention, control information for controlling a processing target range of inter-encoding and inter-decoding of a grid is encoded, a reference grid is updated on the basis of the control information, and a current grid is inter-encoded using the updated reference grid. Further, the encoded data is decoded to generate control information for the encoded data, the reference grid is updated based on the control information, and the encoded data is inter-decoded using the updated reference grid, thereby generating a current grid. The present disclosure can be applied to an information processing device, an electronic device, an information processing method, a program, and the like.

The application discloses a construction method of a generalized honeycomb power distribution network topology structure model, and particularly relates to the fields of power distribution network topology modeling and fault self-healing control technology, and is used for solving the problem of difficult convergence of power supply path reconstruction range caused by unbalanced topology model granularity, disconnection between operation constraints and topology in the fault self-healing process of a complex power distribution network, and insufficient calculation efficiency and decision traceability. A honeycomb unit satisfying homologous feeding, voltage level, protection partition and spatial adjacent constraints is constructed based on a honeycomb reference grid in a power distribution area, and a multi-layer topology structure covering a combination of a transformer substation and a feeder, the honeycomb unit and specific equipment and line sections is formed, the topology updating range under a fault scene is limited by a topology state anchor point and its influence domain, and candidate power supply paths are screened in an operation constraint field, so that the technical effects of converging the calculation range, improving the response speed and constraint satisfaction in the process of power distribution network fault isolation and power supply path reconstruction are achieved.

The invention relates to a brick arrangement method for a pedestrian path. The brick arrangement method comprises the steps that a two-dimensional pavement reference grid is constructed in a pedestrian path area to be constructed; generating a brick body arrangement model according to the brick body parameters; detecting transverse seams and longitudinal seams of the brick body in real time to obtain detection results; adjusting the posture of the brick body according to a detection result to complete brick body laying; and the paving quality of the brick body is verified, and when the deviation of a verification result exceeds a preset parameter threshold value, the brick body is adjusted again. Key paving parameters such as brick body arrangement coordinates, brick joint spacing, brick body postures, paving sequence and paving depth are synchronously monitored and controlled through automatic and digital means, intelligent and refined brick body arrangement is achieved, and the paving quality and the construction efficiency are improved.

An apparatus for recognizing an object and a method thereof are provided. The apparatus may comprise a sensor, a memory configured to store reference grid maps representing an appearance of a vehicle, and a processor configured to project a plurality of points indicating an external object, obtained by the sensor, onto a first surface to obtain a first grid map including a first plurality of grids, project the plurality of points indicating the external object onto a second surface to obtain a second grid map including a second plurality of grids, determine, based on at least one of the reference grid maps, the first grid map, or the second grid map, a type of the external object, and output a signal indicating the type of the external object.

The invention relates to the artificial intelligence technology, and provides a model enhancement method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a reference grid model, and obtaining a target noise signal; performing feature extraction on the reference grid model to obtain reference model features; n times of noise reduction processing based on an attention mechanism is carried out on the target noise signal under the condition of the reference model features, N denoising model features are obtained, and N is a positive integer larger than 1; based on the N de-noising model features, obtaining target model features; and decoding the target model features to obtain an enhanced grid model corresponding to the reference grid model. Through the above method, the model features of the reference grid model are taken as conditions to carry out noise reduction processing of the attention mechanism on the target noise signal, and the enhanced grid model with richer details and higher quality can be reconstructed.

The application provides a verticality detection system and method for a top-down construction process, which comprises the following steps: determining a reference grid for visual detection in the top-down construction; collecting a visual detection image sequence of a target foundation pit support structure based on the reference grid; extracting candidate straight lines of the edge of the target foundation pit support structure from the visual detection image sequence, and extracting edge straight lines that meet the vertical characteristics of the target foundation pit support structure from all the candidate straight lines; extracting a structure central axis of the target foundation pit support structure based on the distribution mode of the edge straight lines, and then converting the structure central axis into an actual space verticality deviation according to the construction layer height calibration data of the target foundation pit support structure; and extracting the confidence verticality of the target foundation pit support structure by combining the actual space verticality deviation with the change characteristics of the structure central axis of adjacent construction stages of the target foundation pit support structure. The technical scheme provided by the application can identify the cumulative deviation of the verticality of the foundation pit support structure in the top-down construction process.

This invention discloses a spatial grid generation method based on geometric constraints, specifically including: acquiring spatial range data of the target area and performing latitude and longitude analysis to generate a reference grid set; constructing a Cartesian coordinate system and converting latitude and longitude into a spatial coordinate set; performing recursive quadrilateral partitioning based on preset side lengths to generate a multi-level equidistant grid cell set; establishing a hierarchical mapping using GeoSOT level 15 grids to form a fused grid structure; establishing an encoding structure to generate a grid encoding sequence; establishing geographic entity mapping relationships to generate a grid set; and performing distance calculation, area calculation, and intersection / merge operations based on the grid set to generate topological relationship results. This invention achieves equidistant partitioning and fused encoding calculation of spatial grids, significantly reducing the complexity of spatial distance and area calculations while improving computational accuracy and processing stability.