Figure reconstruction method in 3D scanning system

A three-dimensional scanning and graphics technology, applied in image data processing, 2D image generation, measuring devices, etc., can solve the problems of complex shape, difficult geometric description of CAD system, difficult to establish mathematical model for free-form surface design expression, etc., to achieve simple operation. Ease of implementation, reduced programming time, and high efficiency

Inactive Publication Date: 2008-09-10
HAIAN COUNTY SHENLING ELECTRICAL APPLIANCE MFG +1
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Problems solved by technology

The main reason is that many products have complex shapes, such as automobile and aircraft covers, artificial prosthetics, ceramic products, art sculptures and various complex parts, etc., the design expression of the free-form surface or the establishment of mathematical models are very difficult. Some CAD systems are still difficult to carry out strict geometric description

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  • Figure reconstruction method in 3D scanning system
  • Figure reconstruction method in 3D scanning system
  • Figure reconstruction method in 3D scanning system

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Embodiment Construction

[0043] A graphic reconstruction method in a three-dimensional scanning system:

[0044] first step:

[0045] Parallel cutting is performed on the preprocessed point cloud to obtain N parallel sections, and then parallel cutting is performed on the point cloud above and below each parallel section to obtain N sections containing parallel sections. The points on the point cloud are vertically projected to the parallel section in the truncated section, and the vertical projection of the parallel section points in the truncated section is regarded as the intercept point between the parallel section in the truncated section and the point cloud. The cut points respectively form N linked lists L i (i=1, 2, ..., N), select a group of processing points respectively from the intercept points in each cut, and this processing point is an intercept point satisfying the following condition, which is the distance between two processing points is the distance between two adjacent points in ...

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Abstract

An image restructuring method in a three dimensional scanning for quick checking of the system to get large data points, it forms triangle division after filtering and jointing, parallel cutting the pretreated points, with the intersection points of each surface forming into N chain list Li(i=1, 2, .... , N). It arranges the treatment point of each chain list based rising sequence of the coordinate value. If the jointed treatment points of chain list Li and Li+1 forming into a closed triangle strip, we can get a close multi lateral representation through the profile curve. A triangle division can be made for the rest adjacent chain list. Replacing the variable of the API function provided by OpenFL with parameters of three points of each triangles, it can show the authentic articles on the display.

Description

technical field [0001] The invention relates to a graphic reconstruction method in a three-dimensional scanning system. [0002] The present invention mainly relates to reverse engineering ( figure 1 ), using a 3D scanning system ( figure 2 ) to obtain massive product data points (point clouds), after filtering and seamless splicing of these point cloud data, and then cutting the spliced ​​point cloud blocks to obtain lines, and then constructing surfaces on the basis of points or lines, Then construct the product geometric model. The invention can be used as an interface module between a three-dimensional scanning instrument and a three-dimensional CAD software to build a bridge between the two, and on this basis, the method of directly making surfaces from point cloud data is studied. Background technique [0003] Reverse engineering has a broad application prospect in practice. The main reason is that many products have complex shapes, such as automobile and aircraft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00G01B11/00
Inventor 达飞鹏唐琦盖绍彦杨伟光
Owner HAIAN COUNTY SHENLING ELECTRICAL APPLIANCE MFG
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