188results about How to "Improve drawing quality" patented technology

The invention discloses a plate packaging and drawing forming device which comprises a male die, a female die and an edge pressing ring which works together with the top end face of the female die to press a plate, wherein the edge pressing ring is positioned above the female die; a fillet convenient for drawing and forming of the plate is arranged on the female die; an anti-expansion coil is mounted on the female die and corresponds to the fillet; the anti-expansion coil is a concentric coil and is used for enabling the plate region sliding to the fillet of the female die to be bent and expanded in the direction far away from the fillet so as to form a bent and expanded part after the anti-expansion coil is powered on. An electromagnetic discharging coil is arranged at the fillet of the female die, so that the plate region opposite to the fillet of the female die can be bent and expanded; therefore, the flowability of a material of a flange part of the plate can be effectively improved, and the drawing and forming quality of a part is finally improved.

The invention discloses a vehicle body side outer plate drawing mold. The vehicle body side outer plate drawing mold comprises an upper mold body, a lower mold base and a convex mold, and further comprises a compensation blank holder arranged on the upper mold body, an inner blank holder movably arranged in the convex mold and matched with the compensation blank holder, and an outer blank holder movably arranged on the outer side of the convex mold and used for positioning a plate with the inner blank holder. The vehicle body side outer plate drawing mold is provided with the compensation blank holder for matching with the inner blank holder and the outer blank holder to control the inner blank holder and the outer blank holder to eliminate a depth section difference, so that the molding corrugation in closing of pressing material surfaces is eliminated, such defects as pits and collapse after molding of the plate are eliminated, and the drawing molding quality of a vehicle body side outer plate is improved. The invention further discloses a drawing method of the vehicle body side outer plate.

The invention relates to an art painting framing proportion perspective correcting machine which comprises a framing plate (1) and a mounting frame (2). Level bubble (3) is arranged at two perpendicular edges of the framing plate (1), a reference scale (4) is slidably mounted at the upper edge of the framing plate (1) and comprises a scale seat (41), a main scale (42) and an auxiliary scale (43), a protractor (44) is arranged on a clamp plate on the front side of a U-shaped slide groove in the scale seat (41), the upper end of the main scale (42) is rotationally mounted on the protractor (44), and an end of the auxiliary scale (43) is rotationally mounted on the main scale (42); the mounting frame (2) comprises a slide bar (21), a framing plate fastener (22) and a drawing board fastener (23). The art painting framing proportion perspective correcting machine has the advantages that real objects can be accurately observed by painters and painting beginners in particular during painting when the art painting framing proportion perspective correcting machine is used, framing composition can be properly carried out, correct perspective proportional relations of the objects can be clearly identified, outlines and shape structures of painting sketches can be quickly compared and corrected, and accordingly the painting quality, the efficiency and the professional quality of the painters can be effectively improved.

The invention relates to a rendering distortion model-based code rate allocation method of viewpoint plus depth coding. The objective of the invention is to optimize code rate allocation of texture video and depth map joint coding. The method includes the following steps that: a total distortion model frame of virtual viewpoints is built; rendering distortion of a left viewpoint and a right viewpoint is calculated; rendering distortion when a depth sensitive value is added is researched, and a geometric error model when a depth error is introduced is built; a distortion model when an occlusion region is added is built; a geometric error model when a texture video error is added is built; an overall viewpoint rendering distortion model error is obtained; and a viewpoint rendering distortion model-based code rate allocation method can be obtained. According to the rendering distortion model-based code rate allocation method of viewpoint plus depth coding, texture video difference and depth map difference are utilized to evaluate virtual viewpoint rendering distortion. The method can be used for optimizing the code rate allocation of texture videos and depth maps, and therefore, viewpoint rendering quality can be optimized. Reasonable bit allocation is performed between the viewpoints, and therefore, the quality balance of viewpoint coding images is high. The rendering distortion model-based code rate allocation method of viewpoint plus depth coding has the advantages of practical operability and convenience in application and realization.

The invention relates to a multifunctional drawing ruler which is formed by combining a primary ruler body and a secondary ruler body through a fixing button, wherein the primary ruler body and the secondary ruler body are marked with scales; the fixing button is provided with a hand screw, the primary ruler body is provided with a through groove, the two sides of a sliding block are provided with grooves, the groove on one side of the sliding block is provided with two fastening screws, the sliding block is connected with the through groove in the primary ruler body in a matched mode through the grooves in the two sides of the sliding block, the center position of the upper surface of the sliding block is provided with a through hole and a convex cylindrical buckle, the secondary ruler body is provided with a through groove, the length of the through groove in the secondary ruler body reach to the position of the fixing button, and the width of the through groove in the secondary ruler body is larger than the width of the through groove in the primary ruler body; a string is connected between the fixing button and the convex cylindrical buckle of the sliding block. When the multifunctional drawing ruler is used, an arbitrary angle, parallel lines, a circle, an oval and other geometric figures can be drawn as needed by moving the sliding block and the fixing button. The multifunctional drawing ruler is simple in structure and convenient to use and brings convenience to teaching of teachers and to learning of pupils.

The invention provides a PID drawing intelligent identification and redrawing method, and relates to the field of PID drawing identification, image processing and computer aided design. According to the method, template matching, deep learning, a pixel point-based pipeline identification algorithm and a merging rule method are adopted to realize positioning, classification and character detection and identification of drawings in a PID drawing image, the drawings and characters are associated by using a regular expression, and redrawing of the PID drawing is completed through PID drawing software. The time for professional engineers to manually draw the PID can be greatly shortened, and the drawing efficiency and quality are improved.

Disclosed is a method for applying a spherical harmonic lighting technology to surface rendering. In the method, a texture backfill method is used so that the spherical harmonic lighting technology can be applied to the surface rendering. Therefore, carrying out discrete sampling on each surface patch in a surface model so that the surface model is converted into a point model; obtaining a spherical harmonic coefficient group of each point through a spherical harmonic lighting method; according to each discrete point and a corresponding spherical harmonic coefficient group of the point, generating a group of spherical harmonic coefficient textures for each face through the texture backfill method; finally, rendering the surface model through a surface rendering method and programming through GPU rendering pipelines so that spherical harmonic lighting simulation is completed. The method for applying the spherical harmonic lighting technology to the surface rendering improves a rendering quality obviously on the premise that a rendering efficiency is not sacrificed. At the same time, the method is capable of improving the rendering efficiency in a certain degree and overcoming different deformation problems generated by overlap of points or inadequacy of coverage ranges in rendering.

The invention discloses a low-noise real-time global illumination drawing method for a three-dimensional geometric scene. The low-noise real-time global illumination drawing method comprises the steps of: initializing drawing of a current frame image by a main node, including, drawing view-port segmentation, model differential transmission and drawing background chartlet, and distributing segmented view-port parameters, a three-dimensional model and a background chartlet to each sub-node; carrying out multi-scale view-port layered drawing for the received three-dimensional model and video-port parameters, and transmitting each layer of drawn images to the main node by the sub-node; synchronizing the image of the current frame drawn by each sub-node and displaying the images in the same layer in a splicing manner by the main node; counting the number of frames drawn by each sub-node every second and drawing the image of the next frame by the main node. As the global illumination way is adopted to draw a complex three-dimensional geometric scene, the low-noise real-time global illumination drawing method for the three-dimensional geometric scene can provide roaming and rapid browsing of fixed scenes and dynamic movable scenes for a user, and can reduce noise points in the drawing process, improve drawing quality and lower modeling cost of the three-dimensional scene.

The invention discloses an out-sync swaging drawing forming mould which comprises an upper die body, a lower die base, a male die and a female die. The female die is arranged on the lower part of theupper die body; the male die is arranged on the upper part of the lower die base and is fixedly arranged on the lower die base; a movable lower binder ring is arranged on the outer side of the male die; a movable support core is arranged in the center of the male die; the male die and the support core are in sliding fit; the female die is fixedly arranged on the upper die body so as to form a fixed male die; a movable upper binder ring is arranged on the outer wall of the female die and is arranged opposite to the lower binder ring up and down; and the lower surface of the female die and the upper surfaces of the male die and the support cores are arranged oppositely so as to be used for plate forming. A small-curvature back door inner plate out-sync binder ring drawing forming mould realizes multi-time drawing forming in one process, so that the problem that a small-curvature complex inner covering piece aluminum alloy workpiece is insufficient in drawing forming so as to be wrinkledand cracked is solved, the drawing quality is improved, and the cost is reduced since only one-step stamping forming is needed.

The invention discloses an image rendering method based on BRDF function linear filtering. The method comprises: creating a BRDF map; aimed at the BRDF map, creating texture cache, rasterizing geometrical triangles of each object to the texture cache; aimed at each texture pixel in the texture cache, calculating corresponding vMF distribution function parameters and ||r||; according to distribution of a normal in a scene, segmenting a region, the segmented texture pixel storing the vMF distribution function parameters corresponding to the region, splicing BRDF maps generated after segmentation to obtain BRDF maps which are performed by MIP-Map; aimed at each pixel in a to-be-rendered image, calculating the size of the region covered by the pixel, and thus obtaining a MIP-Map hierarchy corresponding to the pixel, then reading corresponding position information from the corresponding BRDF maps which are performed by MIP-Map, and rendering. Filtering is applied in real-time rendering, drawing quality is improved, and a calculation process is accelerated.

The invention discloses a mapping system for coal field seismic exploration. The system comprises a data processing unit, a well log curve sampling module, a graphic preprocessing unit and a seismic report mapping unit which are sequentially connected, as well as a database server, a system interface module and a display output module which are connected with the four parts, wherein the data processing unit comprises a main processing module as well as a two-dimensional seismic observing system data processing module, a three-dimensional seismic observing system data processing module, a three-dimensional seismic design drawing preprocessing mapping module and a man-machine interaction module which are connected with the main processing module; the graphic preprocessing unit comprises a mapping preprocessing module as well as a two-dimensional traced drawing module and a three-dimensional traced drawing module which are connected with the mapping preprocessing module; and the seismic report mapping unit comprises a two-dimensional seismic report mapping module and a three-dimensional seismic report mapping module. The mapping system for the coal field seismic exploration achieves overall-process automated mapping work of the seismic exploration from designing to reporting, greatly shortens mapping period of the seismic report, and greatly reduces manual workload and the production cost.

The invention discloses a constructional engineering collaborative design drawing method based on a CAD platform. The method comprises the following steps of 1, collaborative design components of constructional engineering being classified into multiple main body components and accessory components; 2, establishing a composition system composed of a planar graph and a profile graph, and configuring a mapping method of the planar graph and the profile graph for each specialty; 3, pre-establishing a model database for storing collaborative design components; 4, a model creation module being pre-established and used for creating a collaborative design component model; 5, a graph editing module being established in advance and used for editing the graph of the collaborative design component; and 6, drawing a constructional engineering instance graph by using the pre-established functional modules and adopting a collaborative design method. According to the method, graph collaborative design in and among constructional engineering majors is realized, and drawing efficiency and quality are remarkably improved.

The invention provides an optical fiber annealing extending pipe, which comprises a quartz main pipe, wherein the middle position in the axial direction of the quartz main pipe is a variable-diameter pipe section; the pipe diameters of the pipe body, positioned at the two sides of the variable-diameter pipe section, of the quartz main pipe are smaller than the minimum pipe diameter in the variable-diameter pipe section; a quartz branch pipe is connected onto the variable-diameter pipe section; the quartz branch pipe is connected in the maximum pipe diameter position of the variable-diameter pipe section; the quartz branch pipe communicates with the inside of the quartz main pipe; the other end of the quartz branch pipe is connected with a negative pressure suction device; the pipe diameter of the upward middle pipe section of the variable-diameter pipe section is maximum; the pipe diameters of the pipe body, positioned at the two sides of the middle pipe section, of the variable-diameter pipe section are gradually reduced. The quartz main pipe using the optimized structure design is matched with the negative pressure suction device and can be used for performing online cleaning treatment on oxide, volatile substances and the like entering the annealing extending pipe; on the premise of ensuring the optical fiber quality, the optical fiber fracture rate is reduced; the production efficiency is improved.

The invention discloses a wire rod steel wire rod pickling-free drawing production process, and belongs to the technical field of wire rod pickling-free drawing in steel strand production. According to the production process, an energy-saving and pollution-free production line is formed and a traditional pickling and phosphating production process is replaced by sequentially carrying out tension straightening and shelling, centrifugal shot blasting, ultrasonic cleaning, high-pressure water washing, boronizing layer coating and drawing, specifically, an oxide layer on the outer surface of the wire rod is effectively removed by using three five-roller centralized tension straightening machines simultaneously; in the process of centrifugal shot blasting, the surface of the wire rod achieves acorresponding glossiness level convenient for the boronizing layer coating by adopting a forward and reverse mode, a high speed mode and a high frequency mode; the wire rods preheated when the boronizing layer is coated, so that the production efficiency is greatly improved and the adsorption the surface of the wire rod to the boronizing liquid is enhanced; and the surface of the wire rod is quickly dried at high speed and high temperature in a direction perpendicular to the surface of the steel rod after coating, and the boronizing layer is prevented from absorbing water, so that the drawingquality is guaranteed.

One volume rendering visualization method based on elementary theory belongs to computer application technology field. Basing on elementary theory, transform the body data into three-dimensional elementary coefficient through three-dimensional elementary transform, and project three-dimensional elementary coefficient to get the projected two-dimensional elementary coefficient according to the appointed visual angle, then carry two-dimensional inverse transform to the two-dimensional elementary coefficient to get the final protracting image. It effectively enhances the volume rendering speed and gets better draw effect after four times iterative in common. It has faster dispose speed with better draw effect for the visualization with a lot of data. Because the elementary volume rendering process is the iterative process, the production of image can take in step by step and the elementary volume rendering sustains the stepwise exaltation mechanism and it is fit for the need of hardware resource and network visualization.

The invention discloses a copper-clad aluminum conductor production process comprising the following processing steps of: 1, deoiling the aluminum conductor by soaking the aluminum conductor in a chemical solvent; 2, cleaning; 3, pickling the aluminum conductor in a pickling solution for activating; 4, pre-nickeling the aluminum conductor in a solution containing 5-30 g/L of nickel chlorite, 50-150 g/L of nickel aminosulfonate, 20-100 g/L of boric acid and additives; 5, cleaning; 6, coppering the pre-nickeled aluminum conductor in a solution containing 30-50 g/L of copper nitrate, hydroxy ethylidene diphosphate and additives at 25-40 DEG C and with current density of 2-5 A/dm<2>; 7, cleaning the aluminum conductor through clear water at 30-40 DEG C; and 8, winding and packaging the aluminum conductor. The copper-clad aluminum conductor production process disclosed by the invention is reasonable in process, the aluminum conductor is nickeled and coppered by the environmentally-friendly and non-pollution plating solutions, the plating combination strength of produced copper-clad aluminum conductors with various diameters is high, and the subsequent drawing quality of the conductors is good.

The invention provides a wire drawing machine and a machining method thereof. The wire drawing machine comprises a machine frame, a first driving mechanism, a second driving mechanism, a plurality of roll shafts, a wire drawing belt, a downward pressing device and a fixture device. The first driving mechanism and the second driving mechanism are fixedly connected with the machine frame. The first roll shaft is connected with the machine frame, and the first driving mechanism drives the first roll shaft to rotate. The second roll shaft is rotationally connected with the second driving mechanism, and the second driving mechanism drives the second roll shaft to move in the axial direction of the second driving mechanism. The third roll shaft is connected with the machine frame. The wire drawing belt is wound on the multiple roll shafts. The downward pressing device comprises a third driving mechanism and a downward pressing assembly. The fixture device comprises a tool fixture, the tool fixture and the downward pressing assembly are located on the two sides of the wire drawing belt correspondingly, the tool fixture is opposite to the downward pressing assembly, and the third driving mechanism drives the downward pressing assembly to push the wire drawing belt towards the tool fixture. The invention further provides the machining method of the wire drawing machine. The wire drawing machine and the machining method thereof have the advantages of being good in wire drawing effect and high in wire drawing quality and wire drawing efficiency.