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Precision-controllable curved surface splicing method based on intersection of curved surfaces

A surface and precision technology, applied in the field of 3D image processing, can solve the problems of high time cost, influence of splicing effect, inability to control precision, etc., and achieve the effect of intuitive thinking, good experimental effect and high efficiency.

Active Publication Date: 2016-06-15
QINGDAO LANXIN MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the current 3D surface stitching technology, due to the uncertainty of the relative position relationship of the surfaces, the time cost required to accurately reconstruct the intersection zone of the surfaces is high, and the stability of the algorithm is insufficient; and the traditional approximation algorithm cannot perform precision control. , the splicing effect is seriously affected by the quality of the surface mesh. If the area of ​​the triangular patch near the intersection zone is large, the reconstruction result is not ideal.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with specific embodiments.

[0021] A precision controllable surface splicing method based on the intersection of surfaces includes the following steps:

[0022] (1) Input the two intersecting surfaces that need to be spliced ​​into the system, and preprocess them, and divide the polygonal patches of the curved surface into triangular patches;

[0023] (2) Establish an axially parallel bounding box for the triangular faces of the two curved surfaces;

[0024] (3) Using the algorithm for determining the intersection of the axially parallel bounding boxes, calculate the pair of intersecting bounding boxes;

[0025] (4) For each triangular face piece located in the pair of intersecting bounding boxes, the triangle face piece in the other axially parallel bounding box corresponding to the axially parallel bounding box is judged to intersect each other , If there is an intersection, record the start and end coordi...

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PUM

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Abstract

The invention belongs to the technical field of three dimensional image processing, and specifically relates to a precision-controllable curved surface splicing method based on intersection of curved surfaces, being able to approximately splicing two intersected curved surfaces into a complete curved surface and remove the residual triangular surface sheet. The obtained spliced result has no loss of triangular surface sheet, and completely reserves the mesh situation of the original curved surface outside the intersected zone. The precision-controllable curved surface splicing method based on intersection of curved surfaces is precision-controllable, and can perform fine division according to the application requirement nearby the triangular surface sheet with intersected curved surfaces, and can acquire a more accurate result. The precision-controllable curved surface splicing method is visual in the thinking, is high in efficiency and is good in the experiment effect. The precision-controllable curved surface splicing method can be widely applied to the occasions, such as splicing of three dimensional curved surfaces, intersection of three dimensional objects, and summation.

Description

Technical field [0001] The invention belongs to the technical field of three-dimensional image processing, and specifically relates to a precision controllable curved surface splicing method based on the intersection of curved surfaces. Background technique [0002] With the rapid development of modern science and technology and the continuous improvement of people’s living standards, people’s needs for various materials are increasingly showing diversified requirements, and the requirements for product precision are getting higher and higher, thus creating visual-based A non-contact three-dimensional measurement technology on the surface of an object, and this technology has increasingly become a research hotspot in measurement technology in recent years. However, in the actual measurement process, due to the limitation of the scope of the measuring equipment and the variability of the shape of the object itself, it is often impossible to accurately measure the entire measuremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T19/20
CPCG06T19/20G06T2219/2008
Inventor 于昊刘继敏王凯
Owner QINGDAO LANXIN MEDICAL TECH CO LTD