151 results about "Quadrilateral" patented technology

The invention discloses a distributed urban and rural planning decision support method and system, and relates to the technical field of data analysis, and the method comprises the following steps: S100, drawing a planar graph of a to-be-planned region, dividing the planar graph of the region according to a Morse decomposition method, and constructing a region matrix, S200, calculating the coverage rate of the region matrix, and S300, calculating the coverage rate of the region matrix. And planning the surveying and mapping path. According to the method, planning units and surveying and mapping grids are unified into the same quadrilateral matrix through Morse complex, repeated zoning and edge matching errors are effectively avoided, the edge weight is inversely proportional to the building coverage rate, an unmanned aerial vehicle and a surveying and mapping vehicle automatically and preferentially encrypt a high built-up area, field working hours are saved, the data precision of a core construction area is guaranteed, and the construction efficiency is improved. The regional matrix naturally corresponds to edge nodes, and each node only communicates with an adjacent unit, so that the MST and the local route can be locally solved, the communication complexity is reduced, and the method is suitable for large-scale regional surveying and mapping.

The invention discloses an energy absorption enhancement type lattice structure with the Poisson's ratio adjustable in all directions and a design method, and relates to the field of honeycomb structures. The method comprises the steps that S1, two-dimensional honeycomb structure cell elements with the Poisson's ratio capable of being adjusted according to the thicknesses of inner and outer ribs are constructed; s2, overlapping the two two-dimensional honeycomb structure cell elements in the in-plane direction at 90 degrees, and performing Boolean union intersection operation to obtain four three-dimensional honeycomb units; s3, sequentially connecting the four middle vertexes of each three-dimensional honeycomb unit to form a quadrilateral rib, sequentially connecting the upper vertexes of the four three-dimensional honeycomb units to form a quadrilateral rib, and sequentially connecting the lower vertexes of the four three-dimensional honeycomb units to form a quadrilateral rib to obtain a three-dimensional honeycomb structure cell element; s4, performing array to obtain a three-dimensional lattice structure; when being pressed in the in-plane direction, the two-dimensional honeycomb structure cell element shows the same Poisson's ratio polarity as the corresponding two-dimensional honeycomb structure cell element in the in-plane direction. According to the constructed two-dimensional honeycomb structure cell elements, the overall rigidity of the structure is improved, and a novel three-dimensional lattice structure with Poisson's ratio symbol anisotropy is generated through Boolean operation.

The embodiment of the invention provides a three-dimensional Gaussian sputtering scene rendering method and device based on an unreal engine. The method comprises the following steps: analyzing point cloud data of a three-dimensional Gaussian sputtering scene based on a graphics processor, and obtaining structured point cloud attribute data; mapping each Gaussian point in the point cloud attribute data into a quadrilateral instance, and determining a mapping result; according to the point cloud attribute data and a preset double-tone sorting algorithm, determining a sorting result of Gaussian point depths corresponding to the quadrilateral instance; according to the point cloud attribute data, the mapping result, the sorting result and a preset physical rendering model, processing the obtained light source data in the three-dimensional Gaussian sputtering scene, and determining an illumination calculation precision standard; and according to the distance between the preset camera and the point cloud data in the three-dimensional Gaussian sputtering scene, performing scene rendering by using the point cloud attribute data, the mapping result and the illumination calculation precision standard. According to the scheme, the engine compatibility problem is solved, and the rendering performance is optimized.

The application discloses a kind of poisson ratio each direction controllable energy-absorbing enhanced lattice structure and design method, it is related to honeycomb structure field, method includes: S1, constructs the poisson ratio of two-dimensional honeycomb structure cell that can be adjusted according to inner and outer rib thickness;S2, the in-plane direction of two two-dimensional honeycomb structure cell is mutually coincident and placed 90 degrees, carries out Boolean intersection operation, obtains four three-dimensional honeycomb units;S3, the four intermediate vertices of each three-dimensional honeycomb unit are sequentially connected into quadrilateral rib, the upper vertex of four three-dimensional honeycomb units is sequentially connected into quadrilateral rib, and its lower vertex is sequentially connected into quadrilateral rib, to obtain three-dimensional honeycomb structure cell;S4, array obtains three-dimensional lattice structure;When being compressed in in-plane direction, show the same poisson ratio polarity as the in-plane direction corresponding two-dimensional honeycomb structure cell.The two-dimensional honeycomb structure cell constructed by the application improves the overall stiffness of structure, and generates new three-dimensional lattice structure with poisson ratio sign anisotropy by Boolean operation.

The application provides a flow control method based on three-curved-surface fish scale bionic structure, comprising the following steps: S1, constructing a main structure of an impeller blade, including a suction surface e and a pressure surface f, and fish scale areas g with multiple fish scale bionic structure coupling elements arranged regularly are arranged on the suction surface e and the pressure surface f; S2, constructing and designing a single fish scale bionic structure coupling element, including a bottom surface adhering to a blade surface, a top surface in a fish scale structure, and a rear side cylindrical surface; the top surface comprises two groups of parallel fold surfaces, and each group of fold surfaces is composed of three quadrilateral surfaces; a space rectangular coordinate system is established with a front end point of the bottom surface as an origin, and the fish scale bionic structure coupling element is constructed in the space rectangular coordinate system; and S3, establishing multiple fish scale bionic structure arrangement rules. The application can improve the fluid flow characteristics of the blade surface and reduce noise generation based on the control of flow by bionic structure.

The invention discloses a gradient acceleration optimization method for the wall thickness of a water-entry impact-resistant aluminum alloy honeycomb of an aircraft, and the method comprises the steps: selecting an optimal shape from aluminum alloy honeycombs of quadrilateral, hexagonal and circular honeycomb units, carrying out the axial layering, and generating a plurality of groups of honeycomb unit wall thickness gradient samples; constructing an optimal aluminum alloy honeycomb according to the wall thickness gradient samples of each group of honeycomb units, and constructing an aircraft fluid-solid coupling simulation model to perform impact response simulation at a preset water entry speed to obtain a real sample data set; and expanding a real sample data set, training and verifying a GAN-ANN proxy model, embedding the GAN-ANN proxy model into a multi-objective optimization model, and carrying out iterative solution by taking the peak acceleration and the mass minimization of the aluminum alloy honeycomb as objectives and meeting the peak stress constraint to obtain the optimal wall thickness of each layer of honeycomb unit. According to the optimized aluminum alloy honeycomb wall, the water entry impact load can be effectively relieved, the stress borne by the aircraft body is reduced, and the structural light weight can be achieved.

Video coding using warped motion compensation is described. Extended rotations for the warped motion compensation can be explicitly signaled. For example, motion parameters for predicting the current block and a rotation angle can be decoded. A warping matrix is obtained using the motion parameters and the rotation angle, and a prediction block is obtained by projecting the current block to a quadrilateral in a reference frame. Also described is determining a prediction model of the current block and obtaining a prediction block by projecting the current block to a quadrilateral in a reference frame. Determining the prediction model can include determining whether to predict the current block using a motion vector, a local warping model, or a global motion model, obtaining motion parameters of the prediction model, decoding a rotation angle, and obtaining a warping matrix using the motion parameters and the rotation angle.

This invention discloses a method for joint evaluation and optimization of buckling and bending of arbitrary quadrilateral laminates based on physical information neural networks, relating to the field of composite material structure design technology. The method, for arbitrary quadrilateral laminates, first constructs a method based on classical laminate theory... USA The stiffness matrix explicitly reflects the influence of ply parameters, and a physical domain is transformed to a reference domain through a bitriangular affine mapping to establish a physical information neural network mechanical model. The model is trained with the goal of minimizing the total potential energy or Rayleigh quotient, solving for the buckling factor and layer-by-layer strain limits, and adapting to four typical boundary conditions through a boundary embedding function. Subsequently, using ply angle and thickness as variables, optimization is performed using a genetic algorithm, with the goal of minimizing mass, and the buckling factor and strain limits as constraints. The final output is the optimal ply scheme that satisfies specific boundary conditions. This invention can optimize ply angle and thickness while satisfying buckling stability and strain strength constraints.

The application provides a kind of visual quality inspection and machining precision closed-loop control method and system of intelligent manufacturing unit, specifically collect the image of workpiece to be inspected, obtain initial target frame by target detection network, segment workpiece image to obtain pixel mask and contour, calculate the minimum area of contour as size reference frame as circumscribed quadrilateral;Based on the matching relationship between the actual feature points in the reference frame and the preset template, calculate the homography matrix to correct the perspective distortion, get the corrected contour and the standard size frame;Sample along the normal direction of each side of the standard size frame to get edge point set, fit high-precision edge with random sampling consistency algorithm and calculate the proportion of in-point, if the proportion does not meet the standard, increase the sampling density and re-fit, compare the fitted workpiece size with the planned size, and construct the machining deviation state matrix;Combine historical deviation matrix and compensation parameters to update the transfer matrix of machining process online, generate compensation parameters through current deviation matrix and send to unit controller.

This application relates to a method for locating multiple types of screens in a visual image. The method includes: identifying images S using the Mask R-CNN instance segmentation algorithm. input The device is located in a specific area. This area is processed to ensure that the image of the area contains the entire device screen. Finally, an image S containing the entire device screen is cropped out. rough For image S rough Multiple candidate screen contours are identified through edge detection. Based on the screen shape features, a heuristic method is used to fit polygons to all candidate contours. The candidate contours are then sorted in descending order of their fit with the fitted polygons. Based on the sorted candidate contours, the shape category of the device screen is determined, and different localization algorithms are used to locate the screen region. The coordinates of the four vertices of the screen are obtained, and the quadrilateral region formed by these four vertices is used as the final identified and located device screen region. This improves the accuracy of identifying the screen region in an image.

The utility model discloses a high -strength balance anti -vibration movable chassis, including four corner connecting pieces and two cross beams and two longitudinal beams, two cross beams and two longitudinal beams combination form a quadrilateral frame type structure, four corner connecting pieces respectively one one -to -one corresponding detachable setting in four corners of quadrilateral frame type structure, corner connecting piece is configured as in same plane, fixes with one longitudinal beam end portion to one cross beam end portion, to make two cross beams and two longitudinal beams head -to -tail connection, in the utility model, four corner connecting pieces respectively one one -to -one corresponding detachable setting in four corners of quadrilateral frame type structure, therefore, two cross beams and two longitudinal beams can freely dismouting, once some beam appears the cracking phenomenon, only needs corresponding replacement cracking cross beam and / or longitudinal beam.

This invention belongs to the field of building construction technology, and particularly relates to a formwork and construction method for torsion concrete columns that can rotate at any angle in large venues. It includes: a central shaft for support; multiple frame components arranged vertically, each frame component comprising four telescopic mechanisms; the central shaft being located inside the frame components; and the four telescopic mechanisms connected end-to-end to form a quadrilateral structure; a linkage shaft connecting the telescopic mechanisms and the central shaft, one end of which is rotatably connected to a telescopic mechanism; and a protrusion ring corresponding to the frame component fitted onto the surface of the central shaft. This invention uses multiple telescopic mechanisms, the lengths of which combine to form the shape of the quadrilateral frame component. The shape of the frame component can be adjusted by adjusting the lengths of the telescopic mechanisms as needed. The telescopic structure can adapt to irregularly shaped torsion concrete components at any angle, thus eliminating the need for custom-made formwork of fixed sizes.

The utility model discloses a kind of flexible overturning pre-grouping tool, including bottom frame, stand, second crossbeam, second longitudinal beam, overturning device, bottom frame is quadrilateral, including two parallel first crossbeam and two parallel first longitudinal beam, bottom frame is provided with supporting device;Two first longitudinal beam of bottom frame are respectively connected with stand, two second longitudinal beams are respectively arranged at the top of two side stands, second longitudinal beam is parallel with the first longitudinal beam of bottom frame;Two second crossbeams are parallel with first crossbeam and are arranged, two second crossbeams are detachably connected on two second longitudinal beams;Overturning device is respectively connected outside two side stands, and can rotate the above-mentioned structure as a whole.And the first crossbeam of bottom frame can be axially moved relative to first longitudinal beam and is fixed after moving in place by limiting device, so as to adjust the size of bottom frame, adapt to high-voltage equipment box of different size, its structure is simple, convenient to operate, and strong adaptability.

The invention discloses a propeller system dynamics analysis method based on a shell unit, and the method comprises the steps: firstly determining the geometric parameters and design conditions of a propeller according to the design task and working condition of an aviation aircraft; and blade chord length distribution and mounting angle distribution are calculated based on an aerodynamic load rule, and an NACA airfoil profile is selected to generate a three-dimensional geometric model. Then, grid division is carried out according to the model, the connection relation between blade nodes and units is established, and a quadrilateral eight-node shell unit grid is formed; a finite element model is established by adopting an isoparametric element theory, a stiffness matrix and a mass matrix are calculated, and then a kinetic equation of the propeller is established. The inherent frequency and vibration mode characteristics of the blade are obtained through modal analysis, and on the basis, aerodynamic loads are applied for dynamic response analysis. According to the method, the parameterized modeling process of the propeller from geometric modeling to kinetic analysis is realized, the aerodynamic coupling vibration characteristics of the blade can be efficiently evaluated, and the method has the advantages of high modeling precision, high analysis efficiency and high adaptability.

1. The name of the design product: dynamic graphical user interface for displaying correction progress of electronic device. 2. The use of the design product: for an electronic device. 3. The design points of the design product: in the graphical user interface of the electronic device. 4. The picture or photo that best shows the design points: front view. 5. The electronic device is of conventional design, and the rear, left, right, bottom, and top views are omitted. 6. The use of the graphical user interface: for displaying real-time progress information of display correction. 7. The change state of the graphical user interface: the quadrilateral gray coating area on the right side of the front view interface presents the current test color / gray scale, and the progress bar below the quadrilateral gray coating area displays the current correction progress information. The interface change state is shown after a period of time. 8. Other circumstances that need to be explained: the X in each view is replaceable text content; the dashed line in each view is the design points and non-variable content.

The invention relates to the technical field of three-dimensional modeling, in particular to a VTK-based three-dimensional geological section model generation method, system and device and a medium. The method comprises the following steps: firstly, acquiring original drilling data, performing nested storage according to the position of the original drilling data on an exploration line, and performing cleaning and multi-dimensional sorting to obtain structured drilling data; extracting ore bed boundary points from the structured data, constructing a local adjacency graph, and calculating a comprehensive regularity score of each quadrilateral patch in the local adjacency graph based on regularity quantitative indexes; setting a threshold value, if the comprehensive regularity score is lower than the threshold value, adopting vtkQuad for modeling, otherwise, adopting vtkTriangle for modeling, and generating primitive data; performing topology check on the primitive data, storing the primitive data into vtkCell Array, converting polygonal primitives into triangular primitives, and smoothing the triangular primitives to generate a three-dimensional geological section model; performing visualization and rendering processing to obtain a final three-dimensional geological section model; according to the invention, accurate data visualization support is provided for geological analysis, and the intelligent and precise level of geological work is improved.

A main truss of a deck type movable formwork bridge fabrication machine comprises at least two sets of main truss units, and the main truss units are used for being sequentially arranged at the top of a beam body in the bridge direction of the beam body. Each main truss unit is of a quadrilateral plate-shaped structure formed by sequentially connecting a straight edge and three bevel edges, and lightening holes are formed in the quadrilateral plate-shaped structures. The bottom of each main truss unit is of a plane structure. A first hanging part and a second hanging part are arranged at the two ends of each main truss unit respectively, and a third hanging part is arranged in the middle of each main truss unit. A first notch is formed between the second end of each main truss unit and the top of the beam body, and the second hanging parts of the two adjacent main truss units of the main trusses at the two opposite ends in the bridge direction along the beam body are arranged adjacently, so that a second notch is formed between the two adjacent main truss units. According to the main truss, the beam surface operation space of the bridge fabrication machine is greatly enlarged, operation of constructors is facilitated, meanwhile, the main truss units can be combined at will, the main truss is suitable for the single-box and multi-chamber situation, and the adaptability is wider. The utility model further provides a deck type movable formwork bridging machine.

This application discloses a truncated square box, comprising: a box body, formed by eight pentagonal plates sequentially connected to form a hollow structure with an upper opening, a lower opening, and a receiving space; a box bottom and a box lid, respectively disposed on opposite sides of the receiving space, the box bottom covering the lower opening, and the box lid being foldably connected to a pentagonal plate so that the box lid can be folded onto the upper opening to seal the receiving space; wherein both the box bottom and the box lid are quadrilateral; and a magnetic module, which is disposed along the edge of the upper opening and the edge of the box lid not connected to the pentagonal plate, so that the box lid and the box body are magnetically fastened together. The premium packaging box of this application features a reasonable structural design, exquisite craftsmanship, and an appealing design.

This utility model discloses a circular tube drilling and fixing device, relating to the field of circular tube drilling and fixing technology. It includes a handheld electric drill, a connecting assembly, and a fixing assembly. The connecting assembly includes a connecting sleeve, a connecting rod, a positioning element, and a telescopic part. The fixing assembly includes a linkage element and a clamping element, which are perpendicular to each other and form a quadrilateral structure. By setting the linkage element and clamping element to form a deformable quadrilateral structure, when the linear distance between the clamping elements decreases, the clamping element can be clamped to the outside of the circular tube, thus fixing the clamping element, positioning element, handheld electric drill, and circular tube together. The clamping element is located on both sides of the linkage element, and the positioning element is located in the middle of the linkage element. This ensures that the handheld electric drill is centered during the clamping process, and under the limitation of the connecting rod, the handheld electric drill moves linearly along the axial direction of the connecting rod to drill. This makes it convenient and quick to install and remove the handheld electric drill when drilling on the circular tube, and the drilling position can be adjusted conveniently and flexibly.

The utility model relates to a geogrid suitable for soft terrains, which comprises a plurality of regular hexagon units arranged in rows and columns and quadrilateral units positioned in the regular hexagon units, and four corners of each quadrilateral unit are respectively positioned on four side lengths of the regular hexagon units. When in use, the quadrilateral units are arranged in the regular hexagonal units, and the corners of the quadrilateral are positioned on the four side lengths of the hexagon, so that the strength of the side lengths of the regular hexagonal units is enhanced, meanwhile, reinforcing ribs are omitted, the deformability of the regular hexagonal units can be enhanced, and the quadrilateral units can be used in soft terrains.

The invention discloses a round rod grinding quadrilateral roller guide pillar which comprises a quadrilateral guide pillar and a guide sleeve arranged on the outer side of the quadrilateral guide pillar in a sleeving mode, four planes are evenly arranged on the peripheral face of the quadrilateral guide pillar in the axial direction, four annular circulating grooves are formed in the guide sleeve, the four circulating grooves correspond to the four planes one to one, and the four circulating grooves are communicated with the guide sleeve. A plurality of cylindrical pin roller bodies are movably arranged in each circulating groove, the axis of each pin roller body is perpendicular to the axis of the quadrilateral guide column, openings facing the corresponding planes are formed in the bottoms of the circulating grooves, the pin roller bodies can circularly roll along the circulating grooves, and the pin roller bodies located at the bottoms of the circulating grooves abut against the corresponding planes. The four planes evenly distributed on the periphery of the quadrilateral guide pillar in the circumferential direction are matched with the pin roller bodies in the corresponding circulating grooves in the guide sleeve, multi-point line contact supporting is formed, the radial clearance is reduced, the positioning precision is improved, the bearing capacity is high, rotation constraint can be provided, rotation is prevented, and the lateral overturning moment resistance is high.

The invention relates to the technical field of bridge detection, in particular to a bridge crack wall-climbing type detection device and detection method.The bridge crack wall-climbing type detection device comprises a frame, the frame is quadrilateral and composed of four panels, and connecting discs are arranged on the panels; a detection piece is arranged on the connecting disc; the detection piece comprises a mounting groove formed in the connecting disc, guide rods which are symmetrically distributed are arranged at the two ends of the mounting groove in a sliding mode, a rolling wheel is rotationally arranged at one end of each guide rod, and abutting springs located between the cross beam and the guide rods are arranged in the sliding holes; through a gear-arc rack meshing structure of the adjusting piece, the connecting disc can accurately rotate by 45 degrees, so that the roller and the circular bridge column form tangential contact, and full-circumference detection of the circular bridge column is realized by matching with a spiral rising track of the frame; angle adjustment is not needed for the square bridge column, detection can be achieved by directly sleeving and locking the frame, special equipment does not need to be replaced, and the application range of the device is greatly widened.

The invention discloses a brightness and chrominance difference correction method and device for a super-large screen. The method comprises the following steps: acquiring a plurality of sub-display areas which are acquired by a surface shooting camera and comprise fusion bands; determining a circumscribed quadrangle of the sub-display area, and mapping the circumscribed quadrangle into a positive circumscribed rectangle through geometric transformation; positioning and sorting lamp points in the sub-display areas in the positive bounding rectangle, and calculating brightness or chrominance characteristic values of the sub-display areas; calibrating and converting the brightness or chromaticity characteristic value of the sub-display area into a brightness value or a tristimulus value, and carrying out gradient curved surface correction; and calculating a brightness or chromaticity correction coefficient according to the correction target value, and performing fusion to obtain a final correction coefficient. According to the method and the device for correcting the brightness and chrominance difference of the super-large screen, the problem of inconsistent brightness and color expression among the LED units caused by non-uniform aging and environmental factors in a manufacturing process and a use process is reduced or eliminated, so that the visual effect of the display screen is more unified and harmonious.

The invention discloses a GaN bridging micro-disk laser capable of directionally emitting laser and a preparation method thereof, and belongs to the technical field of semiconductor photoelectric devices. A bridging polygonal microcavity structure is provided, extending bridge structures are introduced at vertex angles of a quadrilateral microcavity and a circular microcavity, mirror symmetry of polygons is broken through geometric coupling of bridges and a main cavity, and an echo wall mode is directionally coupled to an output waveguide. The bridging structure can be achieved through conventional photoetching and dry etching, complex deformation etching is not needed, and the technology is compatible with an existing CMOS production line. The side wall damage is repaired through wet etching, the light field scattering loss is reduced, the mode stability is improved, and a robust solution is provided for high-density integration.

A tower has an above ground portion and an embedded portion joined to the above ground portion. The above ground portion and the embedded portion have a respective plurality of modular sections where each respective modular section in each of the respective plurality of modular sections has a respective vertical height and a quadrilateral plan view cross section with equal plan view outer dimensions over the respective vertical height of the modular section. At least one lower modular section in the above ground portion comprises a stronger structure than a modular section that is above the at least one lower modular section. Each modular section in each of the respective plurality of modular sections has corner struts that are parallel to one another and modular sections in each of the respective plurality of modular sections are arranged in a linear sequence.

Crimping pliers, characterized in that the crimping pliers comprise a fastening element (10), a movable plier head (20), a movable handle (30) and a locking component (40), wherein one end of the fastening element (10) forms a fastening plier head (11) and the other end forms a fastening handle (12); wherein the movable plier head (20) and the fastening element (10) are hinged at the first point (101), the first point (101) being located between the jaws (105) of the crimping pliers (100) and the fastening handle (12); wherein the movable handle (30) and the movable plier head (20) are hinged at a second point (102); wherein the locking component (40) comprises the following: a coupling section (41) which is hinged at a third point (103) on the fastening element (10) and at a fourth point (104) on the movable handle (30), wherein the connecting lines connecting the first point (101), the second point (102), the third point (103) and the fourth point (104) form a quadrilateral; a first elastic element (42) connected to the coupling section (41) and configured to reset the coupling section (41); an adjustment section (43) rotatably connected to the movable handle (30) and adapted to the coupling section (41) to limit the outward rotation of the movable handle (30), wherein in the vertical direction the projection of the adjustment section (43) lies completely within the projection of the movable handle (30), the vertical direction being the direction perpendicular to the quadrilateral formed by the first point (101), the second point (102), the third point (103) and the fourth point (104); a second elastic element (44) connected to the adjustment section (43) and configured to reset the coupling section (41); wherein the locking component (40) also includes a forced release component (430) which is rigidly connected to the adjustment section (43), wherein the forced release component (430) is located on a side of the movable handle (30) which faces towards or away from a user.

The present application relates to the technical field of tunnel engineering, in particular to a special long tunnel control point layout structure and control measurement method, comprising the following steps: according to the field measurement condition, the entrance control points C and D are arranged on a pier, and the entrance direction points A and B can be arranged separately or on a pier. In the present application, based on the "Z" type diamond traverse ring, the forced centering pier is arranged to weaken the influence of instrument centering error, and the work of repeatedly burying control piles is avoided. The centering pier is not easy to be disturbed, and the workload and cost are reduced. The control point arrangement makes the target prism have small interference and large angle, improves the measurement accuracy, the cross arrangement method avoids the influence of side light, ensures the data quality, each control point forms a closed quadrilateral, provides redundant observation values, facilitates the detection of data gross error, and facilitates data comparison and analysis. Through comparison of point coordinates, angles and side lengths, gross errors are found and data are reviewed.

The invention provides a frame cylinder structure based on a polyhedral cylinder composite framework, the cross section structure type of a core cylinder is a (8. N) polygon, the outer edge of the core cylinder is provided with frame rods with coincident extension tracks in a surrounding manner, and a traditional rectangular core cylinder is improved into a (8. N) polygon cylinder; the edge number of the polygon of the cross section of the core tube is just equal to integral multiples of the quadrangle of the outer frame, the extension lines of the polygonal core tube with the integral multiples are in butt joint with the rectangular outer frame body to form triangular array grids which are distributed in a central symmetry mode, and the outer frame body obtains uniform and stable multi-directional load resistance performance; compared with a traditional frame cylinder structure, the frame cylinder structure has the advantages that better anti-inclination and anti-torsion effects can be achieved, the anti-lateral effect is further improved through the reinforcing rods at the staggered positions, the defect that a rectangular section structure of the traditional frame cylinder structure is poor in anti-torsion stability is effectively overcome, and the anti-torsion effect of the frame cylinder structure is improved. Conduction stress of the frame is prevented from being concentrated in the middle of the wall, and adaptability of the frame cylinder structure to bearing various types of loads is improved.

The utility model provides a building formwork assembly, relates to the field of concrete pouring molds, and adopts the technical scheme that the building formwork assembly comprises a panel which is of a quadrilateral structure and further comprises a supporting unit, the supporting unit is detachably connected with the panel, and the supporting unit comprises a vertical beam and a cross beam which are connected with each other; the adjusting hole group is arranged at the lower part of the panel, the adjusting hole group comprises a plurality of adjusting holes, and the plurality of adjusting holes are distributed in a matrix manner. The building template can be spliced according to the size of a concrete member, the types and the number of required building templates are reduced, the cost is reduced, and the management is convenient.

The invention provides a method and a device for determining the color of a character in an image, equipment and a medium, and the method comprises the steps: converting an input image into a numpy array of an RGB channel, and obtaining the height Himg and the width Wimg of the image; character area positioning is carried out on an input image, an OCR result containing character position information is analyzed, each character in the OCR result corresponds to a quadrilateral vertex coordinate list, an initial bounding box of a character area is determined by extracting the minimum value and the maximum value of vertex coordinates, the coordinate range of the initial bounding box is limited within the height Himg and the width Wimg, and the character area is obtained. Obtaining a target bounding box of each character region; for each target bounding box, a three-level estimation strategy is adopted to determine the background color of the text area; and determining the font color of the character based on the background color in combination with the color difference and the gradient feature, thereby ensuring that the determined font color is accurate.