reverse surfaces 中文意思是什麼
reverse surfaces
解釋
反轉曲面-
Surface fairing is an inevitable operation on reconstructed b - spline surface in reverse engineering cad modeling. because of some random factors in data acquisition process or limitation on modeling methods, the quality of the constructed b - spline surfaces may not always satisfy the users " requirements
由於各種各種測量因素和造型手段的局限性，基於測量數據重構出來的b樣條曲面模型的表面品質有時並不能滿足用戶的要求，因此經常需要通過光順來改善重構曲面的品質。 -
And the problem in the process of using multiresolution modeling techniques in reverse engineering were investigated, and some solutions for the problems occurring during the process were proposed, such as multiresolution section curves / surfaces construction etc
就小波多解析度造型技術在逆向設計過程中應用時，截面線的構造以及曲線曲面的多解析度表示等關鍵技術給出了解決方案。 -
Firstly the thesis expatiates the basic concept of reverse engineering, analyzes the basic principle of reverse engineering, the technology & theory of three dimensional measuring and basic theory of building 3 - dimensional free - form surfaces model. secondly it introduces the smooth methods of the free - form surfaces of auto body and solves point - data and surface reconstruction. finally the thesis expatiates applications and technology of auto body of futian heavy truck through reverse engineering
本文首先將闡述逆向工程的基本概念，分析車身逆向工程的基本原理以及車身逆向工程中三坐標測量技術與原理，車身表面三維數學曲面模型建立的理論基礎，其次介紹車身外形曲面光順方法，以及車身逆向工程中點數據處理技術及曲線曲面重建技術，最後結合福田重卡車身逆向開發，重點闡述車身逆向工程技術的應用與流程。 -
The parts reverseeng ineering deals with mostly have freeform surfaces. the regeneration of the free form surfaces is the main task of reverse engineering. in this paper some key techniques for nurbs surface reconstruction in reverse engineering such as b - spline curve fitting, b - spline surface fitting to scattered data, b - spline surfa ce fitting to contour data and b - spline curve fairing are studied
本文研究了逆向工程中b樣條曲面重構的關鍵技術，包括b樣條曲線的擬合、散亂數據的b樣條曲面擬合、逐層掃描數據的b樣條曲面擬合以及b樣條曲線的光順。 -
The author also studied ugii, interface statements and internal functions, after a development by using visual c + + 、 ug / open api, inherit functions of ugii, the functions of curve smooth, surface smooth and surfaces combination. after the tests in motorcycle reverse engineering, 1 ) the bad points can be deleted by using curve smoothing function, so the curve become more smooth
二次開發的功能在某摩托車型的反求過程中的應用，取得了良好的效果： 1 ）曲線中的壞點可以通過調用曲線光順的模塊而得到修改，曲線的光順性大大改觀。 -
However most subdivision schemes do n ' t take the limit surface ' s convergence to some user - definded position parameters into account. so subdivision surfaces are always applied in computer animation and artware shape design, not in reverse engineering in which the position - setting constrains are appended to the result surfaces, precision machine design and medical image reconstruction
然而由於大多數細分演算法不考慮極限曲面收斂到用戶指定的某些位置參數，細分曲面的應用始終只能局限在計算機動畫和工藝品設計，無法越雷池半步，應用到對曲面有定位約束要求的反求工程中，參與精密機械設計與醫學圖象重建。
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