68 results about "Planar polygon" patented technology

A flexible armor system adaptable to a garment suitable for extremity protection uses planar, polygon-shaped solid elements made of ceramic cores wrapped in high strength fabric and arranged with rotable edge and intersection protection as a flexible mosaic array which is bonded between an elastic strike side spall cover and a high tensile strength flexible backer layer, further supported by a substantial fiber pack. A progressive mode of localized system failure during a ballistic strike includes: a projectile penetrating the spall cover, fracturing the ceramic core of a wrapped SE while being partially deformed; the deformed projectile accelerating the fractured but still wrapped solid element before it so as to free the solid element from the array and drive it through the flexible backer as a combined mass at a reduced velocity into the fiber pack.

A tile for forming a modular deck with like-configured tiles, the tile having a web having a planar polygonal upper surface and a lower surface, a web strengthening structure on said lower surface, and a plurality of peripheral edges, where at least one of the edges includes a male connecting portion having a lateral tongue extending from the peripheral edge, and at least one of the edges includes a female connecting portion defining a lateral recess in the peripheral edge. In one embodiment, at least three of the peripheral edges include either of the male connecting portions or the female connecting portions.

The invention discloses a method for extracting and quantizing pore boundary of porous materia, comprising the following steps: a microscopic pore structure image of a plurality of parallel sections of a porous material to be detected is taken; a plurality of the pore structure images are respectively transmitted to a computer to be pretreated; the boundary of a black image area and a white image area, namely the pore boundary, in a black and white pore structure image is extracted and marked; the marked pore boundary is a polygon consisting of a plurality of pixels as vertex points; the two-dimension coordinate value of the vertex points is determined and the vertex points are numbered continuously, thus obtaining the two-dimensional pore boundary; and all the vertex points of all plane polygons in two adjacent two-dimensional pore boundary images are connected in sequence according to the number sequence, thus forming a spatial polygon which is the three-dimensional pore boundary. The invention has the advantages of simple operation and low cost, can quantize the performance parameters of the porous material such as pore appearance, degree of cook of a pore channel, and the like; and can analyze accurately.

The invention comprises a polygonal work piece detecting and positioning method which comprises the following steps: Step 1, an edge image in a work piece image is detected, the curve set composed of curves in the edge image is acquired, and a line segment set is extracted from the curve set; Step 2, for each line segment of the line segment set, an edge forming a certain included angle with the line segment and nearest to the endpoint of the line segment is searched as the adjacent edge of the line segment, all the line segments serving as adjacent edges to each other are extracted, and a graph formed by the line segments is a polygon; and Step 3, the polygon is positioned at six degree of freedom. The polygonal work piece detecting and positioning method provided by the invention can be applied to video surveillance, intelligent transportation, video retrieval, robot navigation, human-computer interaction, military and many other fields. In addition, the method provides six-degree-of-freedom positioning of spatial planar polygons, and can be applied to industrial capture, assembly, butt joint and other fields.

The invention discloses an electrostatic spraying robot variable spraying method for an irregular plane polygon. At first, the diameters of a maximum spraying pattern and a minimum spraying pattern are evaluated, then a plane polygon workpiece is subjected to geometric analysis, a spraying starting edge is determined, first section of path is arranged along the starting edge, a track of real-time change of the diameter of an optimum spraying pattern is planned, and finally a polygonal plane is subjected to variable spraying. The method can optimize the spraying effect by adjusting parameters such as electrostatic voltage, spacing, rotating speed of a spinning cup, translational rate and so on. The method improves economic benefit by improving the evenness of a coating and reducing the loss of coating, and can also correspondingly reduce the total amount of the coating discharged to the environment of a spraying workshop to reduce the environmental pollution.

An image processing device for realizing more realistic pictures of explosions in video game devices and the like. Objects displaying such pictures of explosions are formed of spherical polygons (R1, R2, R3, . . . ) and planar polygons (S1, S2, S3, . . . ). Pictures of explosions are realized by alternately arranging these spherical polygons and planar polygons with the lapse in time. Preferably, pictures of polygons are realized by arranging the spherical polygons in layers on the boundary of the planar polygons.

The invention relates to a rapid three-dimensional horizon interpretation method based on horizontal navigation. The rapid three-dimensional horizon interpretation method based on horizontal navigation includes the following steps that (1), seismic data for horizon interpretation are processed in an interpretative mode, and a seismic data volume highlighting horizon information is obtained; (2), time slices near horizons are extracted, a fault interpretation result is projected to the time slices, and the time slices serve as horizontal navigation slices for horizon interpretation; (3), a horizon interpretation scheme is built; (4), another seismic section which can enter the next fault block without passing through faults is selected according to the horizon interpretation scheme, and horizon interpretation of the seismic section is carried out on the seismic data volume so that the horizon interpretation scheme can be introduced to the next fault block; (5), horizon interpretation of all the seismic sections of the faults within the whole area is finished; (6), the point of intersection between the horizon interpretation and fault interpretation is calculated and projected to a seismic work area base map, plane polygons of the faults on the horizon are compiled one by one, meshing calculation of the interpretation result of the horizons is carried out under the constraint of the plane polygons of the faults, the structural meshed plane of the horizons is obtained, and horizon interpretation is completed; (7), the steps (3)-(6) are carried out repeatedly, and interpretation of the horizons of the whole area is finished.

The invention discloses a computational method for porous material pore structure fractal dimension, which comprises the following steps: the dimensional pore edge image of the porous materials to be detected is obtained; the dimensional pore edge of each pore in the dimensional pore edge image is a planar polygon which comprises of a plurality of pixels as climaxes; the coordinate value of each climax of the planar polygon is determined by a computer; a feature factor Z of each pore is obtained by processing and calculation with a computer; the processing procedure of the computer comprises the following steps: an irregular factor Q of each pore is calculated; an acutance factor A of each pore is calculated; the feature factor Z of each pore is calculated; the fractal dimension DS of the appearance of each pore is calculated. The computational method can effectively solve the practical problem that the current fractal dimension can not completely represent structure characteristics of complex holes of the porous materials to be detected.

The invention relates to a target scene positioning method, a target scene positioning device, computer equipment and a storage medium. The target scene positioning method has the technical effects ofacquiring single-frame real-time point cloud data of equipment in real time by a laser radar in the driving process, extracting marker point cloud in the single-frame real-time point cloud data by using external features of a marker in a target scene, constructing polygons by using gravity center points of the marker point cloud, searching congruent polygons with multiple flat edges in a high-precision map with the gravity center point constructed in advance, determining matching points, and implementing positioning according to the matching points. Due to the fact that the relative positionrelation of the objects in the target scene is not changed, the polygons obtained on the basis of real-time point cloud data collected in the driving process are searched for in the high-precision mapto be matched with the congruent plane polygons of the polygons, and by means of the corresponding relation, target scene positioning can be rapidly achieved without GPS assistance.

The invention discloses a plane polygon object measuring method based on SLAM and a machine-readable storage medium. By utilizing the posture information and depth information provided by SLAM, the vertices are mapped into the world coordinate system with the contour information of the video frame image, thus, the length and the area of the plane polygon object are calculated, the on-line real-time measurement is realized, and the method is more suitable for the mobile terminal, and can be used in augmented reality and virtual modeling of the mobile terminal, and can bring better AR experiencefor users, and is more convenient for people to demand for measurement in daily life. Moreover, the triangulation method can be used to improve the robustness of depth information, and two contour extraction methods and iterative method can be used to obtain a wider range of applications, which can meet the needs of image detection in different lighting scenes, and the measurement accuracy is high, and the measurement results are accurate.

The invention relates to a 3D rock mass point cloud registration method based on plane polygon matching. The method mainly comprises three stages (1), plane detection based on voxel multi-time regiongrowth; (2), PCA-based polygon matching; and (3), point cloud registration based on matching point pairs. The method comprises the following steps: firstly, dividing initial rock mass point cloud intovoxel grids, and extracting reliable growth units in each voxel by utilizing an area growth algorithm; Performing secondary growth based on the growth unit to obtain an initial plane set; for the initial plane set, remaining point clouds in neighborhoods around each plane grow, and a plane set in the rock mass point clouds is extracted; Secondly, extracting a polygon boundary of the plane point cloud, projecting a polygon to a two-dimensional plane by utilizing PCA, and carrying out polygon matching; the rock mass point cloud registration method based on the ICP algorithm is suitable for theregistration process of large-scene rock laser scanning point cloud, and the rock mass point cloud registration can be efficiently and accurately achieved.

The invention discloses an air defense missile space killing area model construction and shooting data element calculation method based on a small amount of actual data. The method mainly comprises the steps of (1) acquiring air-defense missile data 2) based on the air defense missile data, establishing a space killing area model; and 3) resolving the space killing area model to obtain shooting data. According to the method, a killing area model is constructed by adopting a polynomial fitting method, a linear fitting method, a curved-edge polygon mapping matrix algorithm, a planar polygon mapping matrix algorithm and a spatial polygon mapping matrix algorithm according to the analytic geometry mathematical model of the killing area and a small amount of public actual data, and the defect of blindness and low efficiency of traditional spatial killing area construction is overcome.

A foldable tubular construct/element with one rigid degree of freedom is of a tubular construction formed by a number of single layered annular units which are connected in sequence; each single layered annular unit is of a prism having N ridge lines; two adjacent prisms each having N sides are connected to each other by sharing a polygon with N sides formed on an intersection plane; each prism with N ridge lines is composed of N rigid planar quadrilateral facets; two adjacent single layered annular units comprise N spherical mechanisms formed by the intersections of only four planar quadrilateral facets at each apex; the polygon having N sides formed in the intersection plane of the two adjacent single layered annular units is a planar polygon with an arbitrary number of sides greater than for a triangle; the ridge lines of each prism having N ridge lines are parallel to each other; the connecting ridge lines of the tubular element are coplanar; when the polygon having N sides formed in the intersection plane of the two adjacent single layered annular units is a line-symmetric polygon of even number of sides with at least one diagonal symmetric axis, the plane in which connecting ridge lines of the tubular element are located is perpendicular to one diagonally symmetric axis.

The 2D/3D converting unit converts two-dimensional (2D) polygon data to three-dimensional (3D) polygon data by substituting an X-coordinate value of the 2D polygon data for an X-coordinate value of the 3D polygon data, a Y-coordinate value of the 2D polygon data for a Z-coordinate value of the 3D polygon data, and a prescribed value for a Y-coordinate value of the 3D polygon data. The drawing unit draws three-dimensional graphics according to the 3D polygon data generated by the 2D/3D converting unit. Since the 2D/3D converting unit generates the 3D polygon data from the 2D polygon data solely by simple substitutions of the coordinate values, complicated operations are unnecessary for generation of the 3D polygon data. Thus, the three-dimensional graphics drawing apparatus is able to draw the three-dimensional graphics at high speed.

A convex polyhedron is formed from planar polygonal members, wherein aligned sides of adjacent abutting polygonal members meet to form edges of the polyhedron. A flexible polycarbonate plastic joining tab fits into slots in the centers of sides of adjacent polygonal members to enable adjustment of the dihedral angle between the adjacent polygonal members. A supplemental source of support such as hook and loop strips are used to fasten joined polygonal members securely in place at a desired alignment and dihedral angle. The polygonal members have mirrored interior faces which impart infinite internal reflections within an interior of the polyhedron, wherein one of the polygonal members is a two-way transparent mirror serving as a viewport, allowing a user to see into the infinitely-reflective interior of the polyhedron.

The invention discloses a construction method of barycentric coordinates. The construction method of the barycentric coordinates comprises the steps that a plane polygonal mesh or a three-dimensional triangular mesh is input; for the plane polygonal mesh, triangularization is carried out on the internal area of a plane polygon to generate a plane triangular mesh inside the polygon; for the three-dimensional triangular mesh, the internal area of the three-dimensional triangular mesh is made to be tetrahedral, so that a three-dimensional tetrahedral mesh inside the triangular mesh is generated; a weighted value of each sampling point to each control point in an area Omega is calculated; according to the input plane polygonal mesh or the three-dimensional triangular mesh and the generated plane triangular mesh or the three-dimensional tetrahedral mesh, an optimization model based on a total variation model is solved, and therefore the barycentric coordinates with local characteristics are obtained. By means of the construction method of the barycentric coordinates, under the restraint of the barycentric coordinates, the weighting total variation of the barycentric coordinates is optimized while serving as an objective function, smooth and local barycentric coordinate values are obtained, memory space for storing the barycentric coordinates is smaller, and the interpolation algorithm of the barycentric coordinates based on the construction method is accelerated.

The invention discloses a system and a method for generating a suspended ceiling 3D model based on plane polygon drawing, and the system and the method belong to the field of 3D model design. The system and the method for generating the suspended ceiling 3D model based on plane polygon drawing are provided by the invention for the problem mentioned in the prior art that a 3D model of a suspended ceiling can be only generated through carrying out a series of professional and complex operations in a three-dimensional model such as adding a plane for a roof, flipping a normal and chamfer extrusion. The system comprises a modeler, a drawing plane node pickup, a suspended ceiling 3D model drawing device and a roof lamp strip drawing device. The method comprises the steps of: step 1, picking up coordinates of a polygon node; step 2, constructing an information model; step 3, drawing the suspended ceiling 3D model; step 4, and coloring and modeling a roof lamp strip, and completing the manufacturing of a suspended ceiling and the lamp strip. The method and the system can realize the purposes of drawing one or more arbitrary polygons in a roof polygon of a two-dimensional design planar graph and directly generating the suspended ceiling 3D model, and are high in efficiency, low in cost and easy to promote.

A system and device for assisting in planting and growing floating macrophyte-type plant species in uses for the purification of water. The system comprises the use of three devices preferably formed from low-density plastic materials: a plane polygonal floating structure with elements for connecting to other floating structures, provided with at least one inner coupling bar connected to the contour of the floating structure or to another inner bar by a flexible arc; a plane cross-linked structure with elements for anchoring to the floating structure and at least one central circular housing; and a basket or cone consisting of a flexible plastic material and for receiving a macrophyte plant, a root cutting or rhizome with a troncoconical form.

A mooring apparatus using a submerged pontoon that does not interfere with floaters and sailing vessels, is not affected by oceanic weather conditions by being submerged at a constant depth, easily separates the floater such as FPSO from the submerged pontoon, in order to cope with an emergency such as stormy weather and avoids collision, and, upon the emergency being terminated, enables the floater such as FPSO to return to the operation area and moor to the submerged pontoon and start the operation. An apparatus for mooring a floater using a submerged pontoon including a submerged pontoon that is placed and fixed at a constant depth below the bottom of the floater, wherein the submerged pontoon is fabricated with buoyant pipes, assumes a planar polygon, is lashed by ropes that are connected to weights or anchors on the seabed and is lashed by ropes that are connected to the floater.

The invention discloses an automobile Bluetooth key positioning method. The method comprises the steps that a rectangular plane coordinate system is established, coordinates of vertexes of an automobile contour plane polygon are calculated, at least three positions in the polygon are each provided with a Bluetooth device, RSSI of each Bluetooth device for receiving Bluetooth key broadcast data isobtained, the distance between a Bluetooth key and each Bluetooth device is calculated based on the RSSI, on the above basis, coordinates of the Bluetooth key projected on the polygonal plane are calculated, and whether the Bluetooth key is in a vehicle or not is judged according to the position relation between the coordinates and the polygon. The Bluetooth devices are arranged at the at least three positions, and the position of the Bluetooth key is determined based on the RSSI, so that the positioning precision of the Bluetooth key is improved.