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unorganized adj.1.未加組織的;未編成的;無組織的。2.【生物學...

unorganized ferment

The parametrization work of eck et al . , and the b - spline construction scheme of peters . the main contribution of this procedure are : it presents a combinatorial optimization method for builing a quadrilateral domain from a triangular one ; it presents an efficient method for fitting a gl b - spline surface of arbitrary topological type to unorganized points ; it introduces a scheme for adaptive refinement of the quadrilateral patch network 論文工作利用了以前hoppe的表面重構工作, eck的參數化工作和peters的b樣條重構方案,主要貢獻在于:提出了從三角形域構造四邊形域的組合優化方法;提出了從無序點重構具有任意拓撲結構g1連續nurbs曲面的有效方法;提出了四邊形網格自適應細分的方案。

Based on data cloud , which is measured from 3 - coordinate measuring machine ( cmm ) or so , an algorithm to search lopological structure from 3d unorganized points using envelopment - box technology is proposed in this thesis . based on this method , we searching neighbor points of sampling point . we also improve the max - min angle criteria to realize local triangulation , and then get the normal of sampling point from the triangulation 本文以測量得到的曲面數據點點云為基礎,提出了一種基于包圍盒的自動尋找三維散亂數據點之間拓撲結構的方法,采用該方法尋找采樣點的鄰域結點,并對三角剖分中的典型優化準則?最小內角最大準則提出了改進,按照改進后的優化準則實現了采樣點的局部三角劃分,并進一步求解得到采樣點的法向量,依據法向量及鄰域拓撲關系在二次曲面的基礎上實現了散亂數據曲面重構中的數據點的自動分類。

Surface reconstruction is one of key techniques in reverse engineering . based on unorganized discrete points come from finite element analysis triangular mesh on exterior surface of the aeroengine hollow turbine blade , this dissertation studied some related problems , such as scattered data preprocessing , quadrangle partition and surface reconstruction technology 曲面重構是逆向工程研究的重要內容之一,本文基于航空發動機空心渦輪葉片外表面的有限元三角網格離散點,對離散數據點的預處理、四邊域劃分及曲面重構技術進行了研究。

As it can be expressed easily by argument equations , we use the conicoid as the criteria of points “ classification . based on the point ' s normal and the adjacent field , corresponding to the conicoid equation such as plane , ball and cylinder , we search the points that fit the equation along the adjacent field . using this method , we realized the automatic classification of unorganized points 本文采用了可以比較方便地用參數方程表示的二次曲面作為數據點的分類標準,根據點的法向量以及其鄰域結點的各種屬性,對應于平面、球面、柱面等二次曲面,依據曲面方程的特點,從起始點開始沿鄰域深度優先遞歸尋找符合方程的數據點,實現了散亂數據點的自動分類。

What ' s more , it has its new features and disadvantages , such as unorganized network information , mixed information contents , shortage of standard search , indirect relation between consultation librarians and users , bad quality control system , the deficiency of network consultation secrecy and expensive search fares 另外,網絡信息的非組織性,信息內容的魚龍混雜,缺乏查詢的標準方法;參考咨詢館員和用戶的間接性,缺乏嚴格的質量控制體系;網絡咨詢保密性差、檢索費用高等也都是其所表現出的新特點、新問題。

The main research works of the dissertation are as follows : 1 ) preprocessing technology of unorganized diserete points : the relative research works were focused on two issues : boundary extracting from unorganized discrete points and generating of original surface , boundary extracting were realized on the basis of rules that disctete points are on the form of triangular mesh and the number of neighbor triangle of border points and inner points are different 論文的主要研究內容如下: 1 )離散數據點集的預處理技術研究了離散數據點的邊界檢測和初始曲面擬合問題。離散數據點的邊界檢測是根據有限元分析所得到的三角網格離散點,利用它的特點,使用離散點的相鄰三角網格的個數判斷是否是邊界點。

The proposed algorithm is capable of handling with kinds of point clouds data , such as three dimensional unorganized point clouds , point clouds acquired from organized cad models or point clouds acquired from finite element analysis meshes 本文所提出的算法可以處理各種數據點云,包括三維散亂數據點云、規則cad模型離散后所獲得的數據點云和由有限元網格采集到的數據點云。

Our study shows that it is a good choice to apply generalized rational parametric curve to interpolate and fit unorganized data , because it provides higher numerical stability by appropriately adjusting the support of basis functions 最后應用廣義有理參數曲線對散亂數據進行插值擬合,它可以通過調整基函數的支撐域來優化方程的系數矩陣,因此提供了更高的數值穩定性。

Based on the unorganized data cloud obtained by optical tracking localizer in acl naviagation , the surfaces of graft placement on the tibia and the femur as well as the impinging notch surface are reconstructed 摘要針對acl導航手術中以光學定位儀測量方式得到的三維散亂數據云為基礎,即時重建植人物的脛骨和股骨附著面及可能產生碰撞的部分滑車面。

We use a size changeable adjacent field to describe the topological structure of 3d unorganized points in our algorithm . it can offer essential dynamic information for tessellation and points “ normal 算法采用可以控制大小的鄰域作為空間散亂數據點的拓撲關系的幾何描述,為網格劃分和點的法向量的幾何描述提供了必要的動態幾何信息。

Surface reconstruction method based on fea surface of 3d unorganized points is divided into four modes according to the special features of points on surface in this thesis ( 2 )基于有限元分析的曲面重構方法根據離散數據點的不同特點,本文將離散數據點曲面分成四種模型。

In this thesis , the surface reconstruction for unorganized points , and the design and implementation of the system for constructing the finite element mesh 本文主要在基于散亂點的三維重建算法,曲面有限元網格自動生成工具系統的設計和實現等方面進行了研究和探討。

In this paper we also present a procedure for automatically reconstructing a nurbs surface of arbitrary topological type from an unorganized set of points 因此,針對具有任意拓撲形狀的曲面,本文提出了從一組無序點自動重構具有任意拓撲結構nurbs曲面的方法。

Based on the theory of space dividing using envelopment - box , an algorithm to search topological relationship from 3d unorganized points is proposed in this thesis 本文提出了一種利用包圍盒空間分割方法對散亂數據點點云進行空間分割進而尋求拓撲關系的方法。

In this thesis , we study some mainstream surface reconstruction algorithms for unorganized data set and adopt the algorithms based on delaunay triangulation 全局重建采用基于cocone方法的算法,并為了檢測邊界而對此方法進行了改進。

Not accepting combat , the group split into small groups and in unorganized small groups began to withdraw in various directions 未經戰斗,部隊即分散成小部隊,開始毫無組織地向不同方向撤退。

3 ) surface reconstruction technology of unorganized diserete points : reconstruction and connection of surface are researched 3 )離散數據點的曲面重構技術研究了四邊域曲面片的重構和拼接。

A region - growing algorithm was proposed to reconstruct triangular meshes from unorganized point cloud 摘要提出一種對無規則點云進行三角網格重構的區域增長算法。

An algorithm of searching topological structure from 3d unorganized points 尋找三維散亂數據點拓撲結構的一種算法