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48 results about "Parallel projection" patented technology

A parallel projection is a projection of an object in three-dimensional space onto a fixed plane, known as the projection plane or image plane, where the rays, known as lines of sight or projection lines, are parallel to each other. It is a basic tool in descriptive geometry. The projection is called orthographic if the rays are perpendicular (orthogonal) to the image plane, and oblique or skew if they are not.

CT system with synthetic view generation

A CT scanner system provides projection-like images of a patient volume. After a CT scan is obtained and a three-dimensional model of the patient is created, any synthetic view can be generated by choosing any array of projection lines, e.g. between a point and a surface (a flat plane, curved plane, spherical, etc) or between two surfaces (parallel or not) and summing across the projection lines. The synthetic projections can mimic certain traditional views, such as a ceph scan, Water's view, Caldwell's projection, etc or can provide a new view that is impossible or impractical with traditional x-ray equipment, such as a perfect parallel projection, or a projection that does not pass all the way through the patient.
Owner:XORAN TECH

Image processing method and computer readable medium for image processing

An intestine is cut by a cross section of a spherical surface or a combination of a plane and a spherical surface, and voxel values on the cross section are projected onto a projection plane in parallel, whereby a cross-sectional image of the intestine is created. Unlike a CPR image, the image of the spherical portion is projected without being extended. If the radius of the spherical surface is increased, the depth toward a screen can be seen and thus perspective of the inside of the observation object can be understood. On the other hand, if the radius of the spherical surface is lessened, the cut surface of the observation object is displayed as flat MPR and can be observed without distortion. Therefore, the radius of the spherical surface is set appropriately in conjunction with the thickness of the observation object, whereby a precise diagnosis can be conducted.
Owner:ZIOSOFT

Apparatus and method for providing a near-parallel projection from helical scan data

An apparatus and method for providing a projection image directly from data acquired by a CT scanner, the method comprising: acquiring an amount of data corresponding to an object that is scanned by the CT scanner, wherein the amount of data is generated by an x-ray source that projects a fan beam of x-rays toward a detector array on an opposite side of a gantry of the CT scanner as the object is passed through an opening in the gantry, the acquired amount of data comprising a reconstruction volume; selecting a viewing direction of the object; selecting a portion of a surface intersecting the reconstruction volume, wherein the selected portion comprises an imaging surface inside the reconstruction volume and corresponding to the viewing direction of the object; dividing the imaging surface into a plurality of rows and columns, thus creating a grid of points corresponding to the imaging surface; determining, for each point in the grid, a data point in the acquired amount of data corresponding to an x-ray source position wherein a ray from the x-ray source to the grid point is closest an orientation parallel to the view direction, and a detector position where the ray intersects the detector array; and presenting a projection image corresponding to the selected imaging surface, wherein the projection image comprises a plurality of projection points and each projection point in the projection image is a converted value of the data points of the acquired data.
Owner:MORPHO DETECTION INC

Detection method for double cross-hole pinch Lamb wave tomographic reconstruction system

The invention discloses a detection method for a double cross-hole pinch Lamb wave tomographic reconstruction system. The detection method is characterized in that a projection data acquiring module (1) is connected with a projection data rearrangement module (2), the projection data rearrangement module is connected with a back projection module (3), the back projection module is connected with a filter module (4), and the filter module is connected with an image display module (5), wherein an energy transducer arranged according to a double cross-hole pinch structure of the projection data acquiring module (1) can perform projection scanning on defective areas to acquire projection data of Lamb wave; the projection data rearrangement module (2) rearranges projection data acquired by the double cross-hole pinch structure into parallel projection data; the differential and back projection module (3) performs back projection calculation on the parallel projection data in a space variation differential and an angle variation integration mode; and the filter module (4) performs finite Hilbert calculation on the back projection data to acquire reconstruction images of an object, and the reconstruction images are displayed through the image display module (5).
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Ancient cultural relic three-dimensional model change detection method using contour line extraction and four-dimensional surface fitting

The invention discloses an ancient cultural relic three-dimensional model change detection method using contour line extraction and four-dimensional surface fitting. The method comprises the followingsteps: registering LiDAR point cloud data sets of an ancient cultural relic in two different periods; re-classifying the LiDAR point cloud data to generate a LiDAR point cloud model; obtaining contour points of the LiDAR point cloud model according to a contour point rapid calculation algorithm based on Gaussian sphere parallel projection; sequentially using a minimum spanning tree algorithm, a short edge pruning method and a smoothing technology to obtain a smooth point cloud contour line; carrying out discrete degree screening on the extracted point cloud contour lines, removing noise features in the point cloud contour lines, and obtaining contour feature maps in two periods; performing feature comparison on the screened contour feature map to obtain a comparison result; and screeningthe obtained comparison results to obtain difference characteristics. The method makes full use of the superiority of LiDAR point cloud data, has the characteristics of short period, low cost, high precision, short updating time and the like, and can ensure the precision of a final result.
Owner:WUHAN UNIV

Topogram From A Spiral Reconstruction

The invention relates to a method for determining a topogram, a computed tomography system and a computer program product. An embodiment uses such a spiral acquisition to reconstruct a spatial three-dimensional image of the examination region. The method also includes establishing a topogram of the examination region by parallel projection of the image along a projection direction. An embodiment of the invention allows distortion-free acquisition of a topogram, as a reconstructed spatial three-dimensional image can simply be projected in a parallel manner along a projection direction. An embodiment also allows multiple topograms to be established easily with just one acquisition, in that the reconstructed image of the examination region is projected in a parallel manner along different directions. An embodiment of the invention also allows particularly fast acquisition of a topogram, in particular in the clinical environment, as the rotating part of the gantry does not have to be stopped for the spiral acquisition.
Owner:SIEMENS HEALTHCARE GMBH

X-ray CT image reconstruction method and X-ray CT system

An X-ray CT image reconstruction method includes turning a fan-shaped X-ray beam, which is thick and irradiated to a subject, about a subject, detecting projection data items concerning an X-ray beam, which is transmitted by the subject, with the X-ray beam turned by a plurality of successive angles of rotation, enhancing fan-beam data, which includes projection data items detected with the X-ray beam turned by the angles of rotation, so as to sharpen projection data contained in the fan-beam data and acquired along each projection line, producing parallel-beam data, which values thereof defined along parallel projection lines, in relation to each angle of projection using the enhanced fan-beam data, and reconstructing an image using the parallel-beam data.
Owner:GE MEDICAL SYST GLOBAL TECH CO LLC

Method and arrangement for three-dimensional representation

The invention relates to the field of spatial representation, particularly to images which are spatially perceivable for simultaneous multiple viewers without auxiliary devices so-called autostereoscopic visualization. The invention addresses the problem of creating a form of autostereoscopic representation based on barrier technology in order to achieve an improved perceptibility for multiple simultaneous viewers. This problem is solved by a method for spatial representation wherein image section data of different viewpoints A(k), where k=1, . . . , n and n=6 or n=7, are made visible on a grid of image elements x(i,j), and at least one parallax barrier screen containing alternating opaque and transparent sections is placed at a distance before or behind the grid of image elements x(i,j). The transparent sections substantially correspond to straight bordered lines which, during the parallel projection of parallax barrier screens onto the grid of image elements x(i,j), are inclined to at least 21 degrees with respect to the vertical direction of the grid of image elements x(i,j) and, furthermore, each have the width of at least 1.9 image elements x(i,j) in the horizontal direction of the grid of image elements x(i,j).
Owner:WISE VISION HLDG

Method for calibrating parabolic catadioptric camera by using separate image of double balls and image of circular point

The present invention relates to a method for calibrating a parabolic catadioptric camera by using a separate image of double balls and an image of a circular point. An image of double balls used as targets is shot by using the parabolic catadioptric camera, and the targets are separated on an image plane. A main point of an intrinsic parameter of the camera is determined by four groups of imaginary antipodal image points, which are correspondingly formed by imaginary intersection points of ball images in the catadioptric image and imaginary intersection points of antipodal ball images; on the basis of obtaining the main point, vanishing lines of planes where two groups of parallel projection small circles of double balls on a unit virtual ball are positioned are solved, so that the image of the circular point on the plane is determined and finally, other intrinsic parameter of the camera are solved by using the constraint of image of the circular point to the intrinsic parameter of the camera. According to the method provided by the present invention, full automatic calibration can be implemented, and errors caused by measurement in the calibration process are reduced. Since all the projection contour lines of the balls in the image can be extracted, thereby improving the calibration accuracy of the camera.
Owner:YUNNAN UNIV

Projection light field three-dimensional display device

ActiveCN113917701ASolve the problem that the stereoscopic display effect gradually weakensInstrumentsDisplay deviceEngineering
In order to solve the problem that in a traditional projection light field three-dimensional display device, when a viewer moves away from a screen, the light field density is lower and lower, so that the three-dimensional display effect is gradually weakened, the invention provides a projection light field three-dimensional display device. The projection light field three-dimensional display device is composed of a projector array and a one-dimensional retroreflector sheet array. The one-dimensional retroreflection sheet array is composed of a plurality of one-dimensional retroreflection sheets. And the normal directions of the one-dimensional retroreflective sheets are consistent and are not parallel to the normal of the image plane. Projectors in the projector array are densely arranged in any form, and each projector respectively projects a parallax image. Light generated by any projector is converged on a straight line after being retroreflected, and the straight line is not perpendicular to the normal direction of an image plane. When a viewer is far away from the screen along the straight line direction, the light field viewed by the viewer does not change any more, so that different viewers in front and back can see consistent three-dimensional images.
Owner:CHENGDU TECHCAL UNIV

Method for obtaining windward side pressure center position and area of spacecraft

The invention provides a method for obtaining the pressure center position and area of the windward side of a spacecraft. The method comprises the steps: establishing a three-dimensional geometric model of a standard reference body at the position near the spacecraft; creating a parallel projection plane graph of the standard reference body and the spacecraft along the flight direction; identifying and extracting a standard reference body area and a spacecraft area in the projection plane graph; calculating the image size, the centroid coordinate value and the total pixel number of the extracted standard reference body area; calculating a centroid coordinate value and a total pixel number of the extracted spacecraft area; calculating a unit conversion coefficient of a standard reference body region image size and a theoretical engineering size; and calculating the windward side pressure center position and area of the spacecraft. According to the method, the pressure center position and area of the windward side of the spacecraft with the complex shape can be rapidly and accurately obtained; the applicable working conditions are multiple; the calculation precision is adjustable, and the operability is high.
Owner:SHANGHAI SATELLITE ENG INST

Robot autonomous tracking method based on vision

The invention discloses a robot autonomous tracking method based on vision, and belongs to the technical field of automatic robots. According to the invention, the target position is determined and the surrounding environment planning path is perceived by using the scene segmentation model based on the GOTURN tracking model and the SegNet so as to avoid obstacles; the system establishes a mappingrelationship between pixel coordinates and two-dimensional plane coordinates through parallel projection, constructs a local grid map under polar coordinates by fusing visual positioning with an environmental mathematical model, and finally plans an optimal trajectory between a robot and a target through an A * algorithm. And relatively strong tracking capability and relatively long tracking distance can be realized in indoor and corridor environments.
Owner:ZHAOTONG POWER SUPPLYING BUREAU OF YUNNAN POWER GRID

On-machine multi-view visual detector for fine milling cutter and detection method of detector

The invention relates to an on-machine multi-view visual detector for a fine milling cutter and a detection method of the on-machine multi-view visual detector. According to the on-machine multi-viewvisual detector for the fine milling cutter, through dual-protection design of positive air pressure and a pneumatic plunger, it is guaranteed that an optical element is not polluted in the severe machining environment with cutting fluid, oil mist and cuttings, and reliable operation is achieved. On the basis a telecentric optical parallel projection imaging principle, a semi-transparent semi-reflecting mirror is adopted, radial and axial observation visual angles can be realized at the same time by using a single camera; and three types of light sources of backlight, front light and glazing are utilized to automatically complete multiple functions of length and diameter measurement, fracture detection and radial and end part surface abrasion observation of the fine milling cutter, so thatfailure of the fine milling cutter is detected in time, the machining surface is prevented from being further damaged, and the machining precision is reduced.
Owner:SHANGHAI WALNUT PRECISION TECH CO LTD

Space curved surface foldable array mechanism configuration method and foldable array mechanism

ActiveCN113378391AHigh Surface Fitting AccuracyLarge and variable folding ratioAntenna arraysDesign optimisation/simulationEngineeringMechanical engineering
The invention provides a space curved surface foldable array mechanism configuration method based on Flasher origame and a space curved surface foldable array mechanism. The space curved surface foldable array mechanism configuration method comprises the steps of: (1) determining the array center, the number of array layers, the number of array rings and the shape of a space curved surface of the space curved surface foldable array mechanism, and establishing a plane foldable and unfoldable array mechanism model based on Flasher paper folding as a reference; 2) calculating to obtain a folding valley / folding peak top point on a midline folding mark of each folding and unfolding partition and a folding ridge top point on a connecting folding mark of an adjacent folding and unfolding partition when the established planar foldable array mechanism model is in a completely-unfolded state, wherein the folding valley / folding peak top point and the folding ridge top point are formed on a midline folding mark of each folding and unfolding partition of the planar array; 3) performing parallel projection towards the spatial curved surface; 4) solving a fitting error of a feasible solution meeting the constraint; and 5) repeating calculation for multiple times to obtain all curved surface array vertex positions of the curved surface foldable array mechanism model, and completing the configuration of the curved surface foldable array mechanism model. The method has the advantages of light weight, large and variable folding-unfolding ratio, high curved surface fitting precision and the like.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

Image projection apparatus

In an image projection apparatus, the deflection axis of the pixels of a display device is parallel to the longer sides of the display area of the display device, and the entrance pupil of a projection optical system is displaced from the line normal to the center of the display area in the direction parallel to the shorter sides of the display device. The distance from the display device to the optical component closest thereto is determined based on the intersection between the lowermost ray of projection light that leaves the lower end of the display area and reaches the entrance pupil of the projection optical system and the uppermost ray of illumination light that leaves the illumination optical system and reaches the upper end of the display device.
Owner:KONICA MINOLTA OPTO

Cutter run-out on-machine vision detector and detection method thereof

ActiveCN111692969APrecise radial runoutAccurate Axial RunoutUsing optical meansComputer hardwareMachine vision
The invention relates to a cutter run-out on-machine vision detector and a detection method thereof. The cutter run-out on-machine vision detector comprises a detector, a data processing controller and a cutter data server, the detector is connected with the data processing controller through a signal cable; the data processing controller is further connected with a CNC controller and the cutter data server. A telecentric lens and a backlight source are arranged in the detector; the telecentric lens and the backlight source are used for carrying out parallel projection imaging on the cutter, acutter image sequence is obtained in the rotating process of the cutter, the data processing controller analyzes the cutter image sequence based on the image sequence frame-by-frame dynamic analysisprinciple, and radial run-out and axial run-out of the cutter are automatically detected. By adopting the cutter run-out on-machine vision detector or the detection method thereof provided by the invention, radial and axial run-out of the cutter can be efficiently, accurately and automatically detected at the working rotating speed of the cutter.
Owner:SHANGHAI WALNUT PRECISION TECH CO LTD

Vision-based tool monitor and tool monitoring method thereof

The invention relates to a vision-based tool monitor and a tool monitoring method thereof. The vision-based tool monitor comprises a detector, a data processing controller and a tool data server, wherein the detector is connected with the data processing controller through a signal cable, a clean air pipe, a plunger air pipe and a positive pressure protection air pipe; the data processing controller is also connected with a computer numerical controller (CNC) and the tool data server separately; and a telecentric lens and a light source backboard are arranged in the detector and used for carrying out parallel projection imaging on a tool, a tool image sequence is formed, the tool image sequence is analyzed by the data processing controller, and the tool length and tool diameter are calculated and transmitted to the CNC. By adopting the vision-based tool monitor, the tool monitoring efficiency and accuracy can be improved, the traceability of historical measurement data is supported, and thus the precision of numerical control machining is guaranteed, and the machining cost is reduced.
Owner:SHANGHAI WALNUT PRECISION TECH CO LTD

3D map display system

In displaying a 3D map, a feature image is generated by perspective projection of the feature based on a predetermined position of the point of sight and a predetermined direction of the line of sight. A plate polygon on which characters are pasted is arranged in a virtual 3D space in a direction along a road and tilted from the ground surface, and parallel projection is applied to the plate polygon so as to generate a character image. A tilt angle between the plate polygon and the ground surface is set based on a display direction of the road and a display position of the character. Thus, by generating the feature image by perspective projection while generating the character image by parallel projection, negative effects such as crushing of distant characters can be avoided, whereby the characters can be displayed in three-dimensional shape without reducing visibility thereof.
Owner:GEO TECHN LAB

Parallel projection method and parallel projection device for detecting diameter and thickness of blank cake

The invention discloses a parallel projection method and a parallel projection device for detecting the diameter and thickness of a blank cake. The method comprises the steps of illuminating the front surface and the side surface of the blank cake respectively through two light sources, receiving the light of the light sources after illuminating the blank cake through an optical lens, transmitting the light into a camera to form a front projection and a side projection of the blank cake; analyzing whether the diameter of the blank cake conforms to the requirement or not through the front projection, and analyzing whether the thickness of the blank cake conforms to the requirement or not through the side projection. The structure is simple, and the diameter and thickness of the blank cake can be rapidly and precisely detected through the visual parallel projection technology.
Owner:江苏保力自动化科技有限公司

Imaging display method and apparatus capable of achieving monocular 3D effect, and application parameter thereof

InactiveCN107065207ASolve the discomfortSolve problems such as vertigoOptical elementsComputer graphics (images)Field of view
The invention relates to the technical field of 3D display and particularly to an imaging display method and apparatus capable of achieving a monocular 3D effect and an application parameter thereof in binocular 3D glasses. The method comprises constructing an inner-arc display surface to obtain a super large viewing field, and projecting a demonstrated image onto the inner-arc display surface by using a parallel projection method. The projected image is naturally stretched by the inner-arc display surface so as to approach a real scene in a visual effect, thereby achieving a 3D imaging purpose.
Owner:文栋

Parallel projection device

The invention discloses a parallel projection device. The device comprises an engine base, a projector, a side plate, a reflector, a reflector dip angle adjustment mechanism and a reflector arc adjustment mechanism, wherein the projector is arranged on the engine base, the side plate is erected on the projector, the reflector is connected with the side plate and forms an alpha angle with the horizontal plane of the projector, and the reflector dip angle adjustment mechanism and the reflector arc adjustment mechanism are arranged on the reverse side of the reflector. The parallel projection device is characterized in that the reflector arc adjustment mechanism comprises a sucking disk, a clamp spring, a reflector fixing frame and an adjusting screw nut, and the reflector dip angle adjustment mechanism comprises a revolving shaft and an adjusting handle. The parallel projection device is characterized by small throw ratio and clear imaging, and can meet use of some certain narrow and small spaces.
Owner:GUANGZHOU AIEN ELECTRONICS

Single crystal furnace liquid opening distance double-point measurement method and device with guide cylinder as reference

The invention discloses a single crystal furnace liquid opening distance double-point measurement method and device with a guide cylinder as a reference. The method comprises the steps that 1, a CCD camera is used for shooting the bottom end of the guide cylinder, and an image schematic diagram of parallel projection of the guide cylinder on the liquid level is obtained; 2, three measuring lines are set on an inverted image circular ring of the image schematic diagram at equal pixel intervals; 3, the liquid outlet distance is directly calculated according to the three obtained measuring lines and a determined value obtained when the guide cylinder is installed. The liquid outlet distance is calculated by only using three measuring lines and a determined value obtained when the CCD camera is installed, so that introduction of a proportionality coefficient and selection of a corresponding point of a boundary point in an inverted image are avoided, and the efficiency and the accuracy of the liquid outlet distance are improved.
Owner:曲靖阳光新能源股份有限公司

A method for detecting geometric changes of 3D murals based on multi-view contour points

The invention discloses an automatic detection method for the geometric deformation of the surface of a three-dimensional mural based on the comparison of the contour lines of a laser point cloud by four-dimensional curved surface fitting. First, use the ICP algorithm to roughly register the point cloud data of the two 3D murals, then use the PCA algorithm to obtain the point cloud normal vector, project the normal vector onto the unit Gaussian sphere, and use the multi-view Gaussian sphere parallel projection method to extract the point cloud Finally, the extracted contour lines are compared by the four-dimensional surface fitting method. The invention makes full use of the contour feature information of the point cloud data, and uses the change of the point cloud surface to accurately detect the change of the surface of the three-dimensional mural: the method does not require or only requires very little manual intervention in the entire detection process. It has the characteristics of fast data update, low cost and high precision, and it can also judge the changing nature of the changing area, which provides an effective detection method for the field of cultural relics protection and detection.
Owner:WUHAN UNIV

The composition method and the used template of the visual diagram of the sphere and its North Pole

ActiveCN105329032BCorrect identified errorsEasy to drawWriting aidsEllipseCircle of latitude
The invention discloses a sphere illustrative diagram, a composition method of the North Pole position thereof and a used template. The used template is characterized by comprising a meridian template and a latitude line template. The method of using the template to determine the North Pole position comprises the steps: in the T parallel projection direction, a sphere center O is taken as a circle center, the minor semi-axis of an equator ellipse is used as a radius for drawing a circle, and the circle and the major semi-axis of the equator ellipse intersect at a point A; the points A and O are connected; a vertical line of AO is drawn through the circle center O toward the North Pole direction of a sphere and intersects with a contour circle of the sphere at a point D; a vertical line of AO is drawn through the point A toward the North Pole direction of the sphere and intersects with the contour circle of the sphere at a point B; a parallel line of AO is drawn through the point B to obtain a point of intersection C where the parallel line intersects with DO, and the point of intersection C is the North Pole position of the sphere illustrative diagram. The determination method of South Pole position and the determination method of the North Pole position are identical, but the directions are opposite. Meridians of the sphere are drawn through the North Pole and the South Pole to complete the drawing of the sphere illustrative diagram. The meridians and latitude lines of the sphere in a general state can be conveniently drawn by the template.
Owner:唐文虎

Radiant energy density simulation method for focusing heliostats in tower solar thermal power plants

The invention discloses a radiation energy density simulation method of a focusing type heliostat in a tower type solar thermal power station, which belongs to the technical field of tower type solarthermal power station simulation, and comprises the following steps: (1) determining the relative positions of sub-plane mirrors in local coordinates, and integrally adjusting the positions and orientations of the sub-plane mirrors according to the incident direction of sunlight; (2) defining an approximate imaging plane according to the reflected light direction of the focusing type heliostat; (3) uniformly dividing the three-dimensional space, and calculating heliostats having shadow and shielding relationships with the heliostats; (4) performing rasterization representation on the approximate imaging plane; (5) calculating radiation energy density distribution on the virtual imaging plane; and (6) projecting the radiation energy density distribution on the virtual imaging plane to a receiving plane through oblique parallel projection. The convolution assignment law and the approximate imaging plane are utilized to obtain the accumulation of the projection areas of the sub-plane mirrors, i.e., the weighted effective reflection areas, so that the solving efficiency of the focusing type heliostat model is improved.
Owner:ZHEJIANG UNIV

Non-contact power distribution equipment detection method

The invention discloses a non-contact power distribution equipment detection method which comprises the following steps that: firstly, a projector is used for sequentially projecting gratings in parallel to irradiate the four side walls of power distribution equipment, if the side walls of the power distribution equipment have convex deformation, the projected images are in an out-of-level state,and the whole box body of the power distribution equipment is detected; and then the infrared emitter vertically irradiates the surface of the power distribution equipment, if the reflected infrared rays have shadows, it is detected that the surface of the power distribution equipment is sunken, and if the reflected infrared rays are vertically reflected, the box body on the surface of the power distribution equipment does not deform. Compared with other treatment processes, the detection equipment is fixed by using the mounting frame convenient to move, and the whole equipment is externally sleeved with the sound insulation cover in the detection process, so that the influence of external noise on ultrasonic detection is prevented, the detection effect is improved, and meanwhile, the remote detection equipment is used, the safety of the detection method is improved, and the detection process is more efficient.
Owner:浙江王奇检测技术有限公司

Machining method for arc door opening of arc wall face in stone industry

The invention discloses a method for processing an arc door opening of an arc wall surface in the stone industry, which comprises the following steps of: projecting a door opening dimension line onto an arc surface by a parallel projection technology, and converting the door opening dimension line into a 2D (two-dimensional) plane graph; carrying out line segment partitioning on an area closed by the unfolded door opening projection line and the datum line, numbering each partitioned area, and carrying out printing by using specification paper according to a proportion; all the areas are printed out in proportion through a laser printer; cutting each printed sheet and each area according to the number and partition lines; according to the partition numbering position splicing graph, pasting work is conducted on the real object arc plates; excavating and cutting along the 3D curve to obtain a door opening outline on the arc plate; and performing trial splicing, inspection, packaging and warehousing. The simple machining method for the arc-shaped door opening of the arc-shaped wall face in the stone industry is developed, the method can be used for accurately machining the arc-shaped door opening in projects such as villas, hotels and clubs, technical bases are provided, and the method has very good popularization value.
Owner:GUANGXI LISHENG STONE CO LTD
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