373results about How to "Improve drawing speed" patented technology

The invention discloses a method and device for obtaining a lane line. In one specific implementation mode, the method includes the steps that road data are collected, wherein the road data at least comprise the two-dimensional image data and the three-dimensional laser point cloud data; a machine learning method is adopted for recognizing the lane line in the two-dimensional image data; based on the spatial position relation between the two-dimensional image data and the three-dimensional laser point cloud data, a lane line recognition result is converted into three-dimensional lane line disperse points; according to statistical characteristics, the three-dimensional lane line disperse points are filtered; the filtered lane line disperse points are clustered so as to obtain the lane line. By means of the implementation mode, the lane line can be accurately and efficiently obtained, and it is avoided that vehicles or road edges or other marking lines in a road image influence the process of obtaining the lane line. When applied to map drawing, the drawing speed can be obviously increased, and the drawing precision can be obviously improved.

A visual analyzing and predicting method based on a virtual geological model is finished by depending on an interactive visual tool. The method mainly comprises steps of searching a multi-dimensional geological data model from a database and a file system; arranging or resetting a virtual geological scene by setting or regulating corresponding parameters and models; regulating coordinate, scale, data format and the like, of the geological model; sending results of visual calculating, analyzing, predicting and searching into a dual-display cache region; and integrally displaying geological data in a visual platform at real time. The method meets requirements of earth science application, enhances representability of geological data, improves comprehension and application environment of geological data, converts logical thinking of geologists into a trial ground having an imagery thinking of time and space in a virtual environment, helps strengthen deep recognition to complex geological phenomena, uncovers deep information and internal relation in geological data, digs out and extract knowledge unable to be obtained in a traditional mode, improves utilization rate and geospatial analytics of information, and provides a brand-new method for geologists to observe, explain, analyze and imitate geological phenomena in a three-dimensional space, predict and know geospatial distribution of geological structure in a studied area through known data, and obtain mine position, mine reserves and other important information. Furthermore, the human-computer interactive tool is simple and easy to learn to operate, saves cost, reduces blindness in application, reduces risk, conducts and makes decision for production and environment analysis and has significant economic and social benefits.

A holster for securing a pistol having a barrel with a chamber, a muzzle, a slide having a front and rear portion, includes (a) an open-bottom enclosure sized to accommodate the slide, wherein a cavity defined in a front portion of the enclosure is sized to receive the muzzle but not allow the slide to enter therein; (b) a securing member pivotally attached within the enclosure near a rear portion thereof and shaped to correspondingly mate with a rear portion of the slide; (c) a lever disposed externally to the enclosure and attached via a connecting member to the securing member; (d) a spring disposed between an interior surface of the enclosure and the securing member; and (e) a protuberance extending from the interior surface of the enclosure and sized to be received into the chamber when the pistol is secured within the enclosure.

The invention discloses a three-dimensional reconstruction method for a concrete CT (computed tomography) image, comprising the following steps of: firstly, performing tomography on a concrete test sample by a CT machine; secondly, performing three-dimensional reconstruction on the concrete CT image by using a ray-casting algorithm, so as to obtain real images of aggregates, mortar and holes; and finally, performing three-dimensional stereo reconstruction on the concrete CT image by using a visualization tool VTK (visualization tool kit). The three-dimensional reconstruction method for the concrete CT (computed tomography) image, disclosed by the invention, has the advantages of being strong in real-time performance, high in operation efficiency, and capable of clearly and reliably distinguishing the aggregates, the mortar and the holes. A real meso-structure model of concrete can be obtained through a three-dimensional reconstruction result, the three-dimensional reconstruction result can be subjected to a test comparison with a concrete mesoscopic numerical simulation result, and a numerical analysis model is corrected.

The invention relates to a device and method for acquiring road information from map data. The method includes: acquiring point cloud map data and semantic map data; extracting road information in a semantic map from the semantic map data; acquiring a primary road boundary from the point cloud map data; matching a road boundary in the road information in the semantic map with the point cloud map data to obtain road boundary information of a to-be-generated semantic map; matching lane line information in the road information in the semantic map with the point cloud map data to obtain lane lineinformation of the to-be-generated semantic map; obtaining road information of the to-be-generated semantic map according to the road boundary information and the lane line information of the to-be-generated semantic map. By means of matching of data in a traditional data map with point cloud in high-precision map data, manual annotation is greatly saved, and the map drawing speed is increased.

The invention discloses a rapid gas film continuous casting device under the action of a magnetostatic field; the device comprises a crystallizer, a hot top, an induction coil, a double-layer cooling water channel, an oil-gas ring and a graphite annulus, and is characterized in that the hot top is surrounded by the induction coil, the oil-gas ring is arranged between the outlet of the hot top and the graphite annulus, the oil-gas ring is provided with an oil inlet and a gas inlet, the oil inlet and the gas inlet can lead oil and gas outside the crystallizer to the crystallizer by an oil channel and a gas channel on the crystallizer; lubricant and gas are led to the oil-gas ring in the rapid gas film continuous casting; the magnetic field is applied by the induction coil, and an alloy is poured at the pouring temperature. The rapid gas film continuous casting device can obviously improve the surface quality and inherent metallurgical quality of ingot casting, and improve throwing speed and production efficiency.

A resist material and a nanofabrication method provide high-resolution nanofabrication without an expensive irradiation apparatus using, for example, electron beams or ion beams. That is, the resist material and the nanofabrication method provide finer processing using exposure apparatuses currently in use. A resist layer of an incompletely oxidized transition metal such as W and Mo is selectively exposed and developed to be patterned in a predetermined form. The incompletely oxidized transition metal herein is a compound having an oxygen content slightly deviated to a lower content from the stoichiometric oxygen content corresponding to a possible valence of the transition metal. In other words, the compound has an oxygen content lower than the stoichiometric oxygen content corresponding to a possible valence of the transition metal.

A method of cooling an optical fiber during drawing through contact with at least one cooling fluid in at least one cooling area, wherein fast cooling, i.e. cooling that is faster than cooling in the surrounding air, from an initial temperature of the fiber to a temperature at the end of fast cooling of said fiber, is followed by slow cooling, i.e. cooling slower than cooling in the surrounding air, from a temperature of said fiber at the start of slow cooling to a temperature of said fiber at the end of slow cooling.

The invention provides a method and a device for loading map annotations. The method includes responding to a map amplifying instruction, and finding newly-increased points of interest in a current visible area of a map after being amplified relative to the map before being amplified; carrying forward annotations of original points of interest in the current visible area of the map before being amplified; performing collision detection and loading on annotations of the newly-increased points of interest. Compared with the prior art, the method and the device have the advantages that visual experience of users in the process of map loading can be improved remarkably.

The invention discloses electronic white board equipment and a drawing method thereof. The device comprises a handwriting identification module and a graphical operation module, wherein the handwriting identification module is used for identifying a signal input in any position of a white board and carrying out voice playing while identifying; the graphical operation module comprises a first storage unit, a second storage unit, a graph-selecting unit and a drawing unit; the first storage unit stores a plurality of graphs unchanged in the white board; the second storage unit stores graphs to be stored in the white board; the graph-selecting unit is used for storing a graph selected by the first storage unit to the second storage unit when the handwriting identification module identifies a graph-selecting operation; and the drawing unit is used for re-drawing other graphs in a region where the selected graph is arranged into the first storage unit and directly copying all the graphs of the first storage unit and the second storage unit as images to a screen for displaying when re-drawing the graphs. The invention can effectively improve the drawing efficiency of the electronic white board.

The invention discloses an interpolating method of self-adapting medical sequence image among fault space based on interesting area, which utilizes tissue relativity and body relativity to judge whether the interpolated point belongs to the interesting area to select fitful interpolating method. The invention considers the change of grey and structural outline, which solves the insufficiency of traditional interpolating method to make new interpolated image approach actual condition. The interpolating method modifies the visual effect and image quality greatly, which reduces the noise and shortens the calculating time to be applied in three-dimensional reconstruction and display system.

A method of cooling an optical fiber during drawing through contact with at least one cooling fluid in at least one cooling area, wherein fast cooling, i.e. cooling that is faster than cooling in the surrounding air, from an initial temperature of the fiber to a temperature at the end of fast cooling of said fiber, is followed by slow cooling, i.e. cooling slower than cooling in the surrounding air, from a temperature of said fiber at the start of slow cooling to a temperature of said fiber at the end of slow cooling.

A curable composition for coating an optical fiber that includes an aliphatic-aromatic oxyglycidyl(meth)acrylate monomeric component, an aliphatic-(hetero)cyclic oxyglycidyl(meth)acrylate monomeric component, or a combination thereof, and an ethylenically unsaturated urethane or urea oligomeric component. Cured products of the composition and optical fibers that contain cured primary coatings formed from such compositions are also disclosed. The resulting optical fibers and optical fiber ribbons containing them can be used for data transmission in telecommunications systems.

The invention relates to the technical field of software engineering research and discloses a positioning-data trajectory tracking method. The positioning-data trajectory tracking method includes the following steps of A), acquiring neighboring positioning points of P1 and P2; B), acquiring road data matched with the P1 and a road element point set in the road data; C), sequentially acquiring points located ahead of the P2 and included in the road element point set for moving points along the moving direction of a vehicle when the road matched with the P1 is a curve; D), drawing trajectories according to coordinates of the P1, the moving points and the P2; wherein if the number of the moving points is larger than 1, arraying the drawn trajectories according to the order acquired. By the aid of analysis of the neighboring positioning points, the proper points in the road element point set are selected as the moving points of the vehicle, untruthfulness in drawing of the trajectories due to the fact that the neighboring positioning points are scattered therebetween is improved, and the accurate, true and smooth trajectories can be acquired by drawing the trajectories according to the points.

The invention discloses a Revit software-based rapid drawing method for a prefabricated stair detail drawing. The method sequentially comprises the following steps of S1, setting sharing parameters; S2, pre-creating a parameterized family; S3, creating a prefabricated stair project file, designing a view template, loading each parameterized family, setting prefabricated stair parameters, and adding placement embedded parts; S4, drawing a prefabricated stair template drawing section and a detail drawing; S5, drawing reinforcing steel bars; S6, creating a detail list; S7, drawing a reinforcementdiagram and a profile diagram of the shape of the steel bar; S8, carrying out size marking; S9, carrying out typesetting; S10, printing a drawing. According to the Revit software-based rapid drawingmethod for the prefabricated stair detail drawing, modification is in instant linkage, information extraction is simple and convenient, data statistics is efficient, and the drawing speed is high.

The invention discloses a method for drawing a virtual view image, which has the advantages of dividing the color image of a reference view into a plurality of blocks with same sizes and judging the flatness of each block; for flat blocks, 3D image conversion is only needed to be executed to one pixel point in the block so as to confirm the coordinate mapping relation of projecting the pixel point from the color image of the reference view to the color image of a visual view; and then the whole block is projected into the color image of the visual view by adopting the coordinate mapping relation. As the 3D image conversion is only executed to one pixel point; the drawing speed of the flat blocks can be effectively improved; while for non-flat blocks, the 3D image conversion of per pixel mapping is still adopted to map each pixel point in the non-flat blocks to the color image of the virtual view needing to be drawn, thus being capable of effectively ensuring the drawing precision; the combination of the two greatly improves the drawing speed simultaneously when ensuring the drawing precision of the color image of the virtual view.

The invention discloses a method for rapidly drawing curves multiple times, which relates to the drawing field of vector graphic images. The method comprises the following steps: according to a curve starting point-middle point-ending point sequence, sequentially computing the reciprocal of the length of a connecting line, and taking the reciprocal as the initial value of an interval value of actual drawing points of a curve to be drawn, selecting a value t according to the interval value, and sequentially obtaining the values of curve points according to a multi-time curve formula; judging whether the calculated coordinate is same as the previous coordinate, if so, doubling the interval value, otherwise, storing the coordinate result into the tail of a curve coordinate column, and continuing to carry out calculation and judgment. According to the invention, based on the optimization of a bezier curve algorithm, through controlling the number of times of recursive iteration and excluding similar points, the number of drawing points is reduced so as to improve the curve drawing speed, therefore, an effect of rapidly drawing curves multiple times under a large amount of data can be achieved.

A data hierarchy and organization method capable of fast displaying road conditions includes defining display levels of different road sections in map data according to road hierarchy information; then, combining the road sections with same index identifications into a road section according to index identifications of a road section coding schedule in the map data and performing thinning; establishing code corresponding indexes which can be rapidly and mutually searched between road condition display data and the road section coding schedule according to a unique index of road condition information; and finally, generating road condition display data according to the established code corresponding indexes and subjecting the road condition display data to partitioning organization to display the area road conditions.

A method for producing an optical fiber that includes a method for producing an optical fiber, said method comprising: (i) drawing a bare optical fiber from a preform along a first pathway at a rate of at least 10 m / sec; (ii) contacting said bare optical fiber with a region of fluid in a fluid bearing and redirecting said bare optical fiber along a second pathway as said bare optical fiber is drawn across said region of fluid cushion; (iii) coating the bare optical fiber; and (iv) irradiating said coated fiber in at least one irradiation zone to at least partially cure said coating, while subjecting the optical fiber to UV light.

The invention provides an LOD model generation method based on a linear quadtree. The method comprises the following steps: performing linear quadtree segmentation on to-be-drawn terrain, storing data of the to-be-drawn terrain in a two-dimensional array, reading information of each node in the linear quadtree from the two-dimensional array through an index, storing leaf node information of the linear quadtree, organizing terrain nodes, enabling the terrain nodes in the linear quadtree to be stored in a one-dimensional array, establishing a terrain node evaluation mechanism on the basis that a static error and a dynamic error are considered, performing crack elimination on different segmentation levels of the adjacent terrain nodes, and obtaining an LOD model based on the linear quadtree. The method is applied to a terrain simplification aspect in a computer graphics and image field, and the terrain nodes are organized by utilizing a linear quadtree storage model and through combination use of a two-dimensional filling curve; on the basis that error factors are fully considered, the node evaluation mechanism is established, and a terrain crack problem is eliminated; and terrain drawing efficiency can be obviously improved.

The invention provides a method for approximately drawing a soft shadow of a three-dimensional scene. The method comprises the following steps of estimating planar surface light source visibility in a visible scene area by randomly sampling planar surface light sources, and reducing planar surface light source visibility noise introduced through random sampling by utilizing spatial convolution smooth denoising and filtering; utilizing a ray casting technology, calculating illumination contribution of the planar surface light sources visibility data to a visible scene point according to the obtained planar surface light source visibility data of the visible scene point, finally calculating a color value of the visible scene point based on the illumination contribution, and drawing a three-dimensional scene picture comprising the soft shadow. According to the method, the drawing quality of the three-dimensional scene picture can be ensured, and the drawing speed is improved.

The invention discloses a ground control and measurement stationing method based on an onboard interferometric synthetic aperture radar (InSAR). The method comprises the following steps of: 1, designing a flight line, namely determining a range of a region to be plotted according to pre-collected information of a detection region terrain and designing the number N of sorties required to fly and the flight line of each sortie according to the determined range of the region to be plotted and flight parameters during plotting; 2, arranging calibration fields, namely arranging one or two calibration fields for radiating and geometrically calibrating an onboard InSAR system inside or outside the detection region; 3, stationing plotting control points; and 4, scanning flight, namely after the N sorties fly in the calibration fields and the detection region, acquiring InSAR measurement data in the region to be plotted. By the method, the steps are rational in design, the use operation is simple, and the using effect is good; and the shortcoming that the onboard InSAR terrain plotting control and measurement cannot be instructed according to the technical rule of the conventional optical system is overcome.

This invention relates to computer graphics and mode identification technique field and in detail to use point recreation for super large scale of medical three-dimensional image visualization and comprises the following steps: first to divide the cared part from the medical two-dimensional slice; second to recreate based on point to extract the cared organic three-dimensional surface and to store it in form of point; third to draw with three-dimension to display the extracted surface mold with the drawing method based on points.

The invention relates to a power distribution network uniform connection diagram generating method applicable to situation analysis. The power distribution network uniform connection diagram generating method includes acquiring original information containing positions and circuits of transformer substations and loads; traversing nodes connected with each node and computing gravitational resultant force of the node; acquiring repulsive force vector sums according to point-side and side-side circumvention; acquiring resultant force and substituting the acquired resultant force into a motion equation with tractive force so as to shift each node; performing iteration until final displacement of each node is smaller than a fixed value and then stopping shifting the node in current topology; leading out the final position of each node, and writing the final position of each node into SVG (scalable vector graphics) to completely generate power distribution network uniform connection diagrams. The nodes represent the transformer substations and the loads. The power distribution network uniform connection diagram generating method has the advantages that requirements of systems on SVG syntax formats can be met; the diagram generating efficiency is high; diagram render effect have distinct gradations after voltage contour lines of the power distribution network uniform connection diagrams are rendered, and control of operating personnel of power distribution networks on situations of the power distribution networks can be greatly improved.

The invention discloses a method and a system for quickly drawing a complex scene based on a process factory parameter model and relates to the technical field of quickly drawing the complex scene. The method comprises the following steps: analyzing the process factory parameter model, thereby acquiring an object contained in the model and an volume element contained in the object as well as parameter information of the volume element; establishing a scene tree based on an eight-fork tree structure, by using the object as a tissue unit; on the basis of a fractional number of the volume element, forming layering detail models with different resolution ratios; rejecting a vision field based on the layering of an encircled box of the scene tree; judging which object and which volume element of the object are located in the vision field; based on a view point, dynamically choosing the detail model used by the volume element; achieving the purpose of changing the resolution ratio of the volume element by changing the index arrays of the volume element; and performing backward rejection on the basis of parameter analysis expression of the volume element. By using the method provided by the invention, the real-time roam problem of the large-scale process factory model is solved, the real-time roam of the large-scale process factory model can be performed on a common PC (personal computer), the preprocessing time is short, and the occupancy rate of disk space is small.

The invention provides a handwriting drawing method and system for a multichannel tablet device. The method comprises the steps as follows: establishing communication connection between the first drawing channel and the second drawing channel of the multichannel tablet device; determining the current operating channel of the multichannel tablet device when the information that a writing pen is pressed is detected; determining the direction of transmission of drawing data of handwriting according to the current operating channel; acquiring the drawing data; when the drawing data is transmitted through the first drawing channel, drawing the handwriting according to the drawing data under the first drawing channel; when the drawing data is transmitted through the second drawing channel, transmitting the drawing data from the first drawing channel to the second drawing channel and drawing the handwriting according to the drawing data under the second drawing channel. Through the scheme provided by the invention, the drawing process is smoother, the drawing speed is increased, and users can obtain better service experience.

The invention discloses a method and device for acquiring a high-precision submarine topographic and geomorphologic map. The method comprises the steps of acquiring navigation data, replacing navigation data in detection data of bathymetric sidescan sonar by using effective navigation data in the navigation data, acquiring rewritten detection data, and performing rejection, correction and filtering processing on the written detection data to acquire primary detection data; processing bathymetric data in the primary detection data to acquire processed bathymetric data; processing sidescan data in the primary detection data to acquire processed sidescan data; replacing the primary detection data by using the processed bathymetric data and the processed sidescan data to acquire final detection data; and mapping by using the final detection data to acquire a submarine topographic and geomorphologic map. The submarine topographic and geomorphologic map acquired according to the invention is closer to the real submarine topography and geomorphology, the image precision is higher, and the mapping speed is high.

Disclosed herein is a fine and thick wiring drawn at high speed in such a manner that a region on the substrate, on which region the liquid droplet is scheduled to impact, is heated beforehand, and that immediately after the impact of the liquid droplet on the substrate, the liquid droplet is promptly solidified so as thereby to suppress the spread of the liquid droplet due to the wettability of the liquid droplet to the substrate, and also to suppress the clogging of the nozzle due to the heating of the substrate. Thereby, even in the case where a liquid droplet having a larger volume than before is used, high-speed drawing of a thick and fine wiring having a line width approximately equal to the liquid droplet size is realized independently of the substrate material.