reverse (spline) 中文意思是什麼

reverse (spline) 解釋
反轉（曲線）
  • reverse : vt 1 使顛倒，使倒轉，使反轉；使翻轉；翻（案）。2 掉換，交換。3 使成正相反的東西，完全改變。4 【機...
  • spline : n. 1. 【機械工程】花鍵；方栓；止轉楔；齒槽，齒條，鍵槽條。2. 【建築】塞縫片。3. 活動曲線規。vt. 1. 開鍵槽于。2. 用花鍵（或方栓）聯接。
  1. Then this dissertation implements most of algorithm of non - uniform b - spline surface such as positive calculation, reverse calculation, knot interposer etc. based on the g0, g1 continuous conditions of uniform bicubic b - spline surface, the paper deduces the g0, g1 continuous conditions in the surface reverse calculation then implements it for each face. the last step is the data exporting

    然後運用非均勻b樣條曲面反算構造插值曲面，研究了雙三次非均勻b樣條曲面反算過程中的g ~ 0 ， g ~ 1連續條件，並根據該條件針對不同的表面給出了相應的連續策略，實現了各曲面間的g ~ 0或g ~ 1連續。
  2. This process is as follows : firstly, the data of different section contour and of section line have been obtained by reverse - engineering ; secondly, non - uniform b - spline approximation algorithm is used to fit the discrete data ; then the data have been optimized and reduced by adopting adaptive sampling of key points of the fitted curve based on vertical distance, sequently the adaptive sampling data is transformed into the format of the. ibl file of the famous 3 - d design software pro / e. therefore we reconstruct the surface and a model is generated ; lastly, the effectiveness of the adopted algorithm and modeling approach are demonstrated by the experiments

    建模型的過程中，首先運用逆向工程測量方法，獲得曲面物體上不同截面輪廓線的測量數據點列，接著對測量數據點進行平滑處理，用最小二乘法求解基於數據點列的控制多邊形，以非均勻三次b樣條曲線擬合截面輪廓曲線；然後利用基於垂距的數據采樣演算法，對擬合曲線上的數據點進行重新采樣，達到優化數據點的分佈及減少描述曲線數據量的目的。
  3. In this paper, we take the reconstruction of surface of revolution as our main aim, and by using the delaunay triangulation, the definition of curvature and the theory of b - spline, we present a way of reconstructing surface of revolution from point cloud. the main content of this paper is given in the following. computer aided geometric design and reverse engineering are the basis of this article

    本文以旋轉面重建演算法為主要研究對象，應用三角部分、曲率的定義以及b樣條理論提出了一種由點雲數據構造旋轉面的方法，主要工作如下：計算機輔助幾何設計以及反向工程是本文的理論基礎，因此論文的第一章對其進行了簡短的回顧和綜述，並給出了旋轉面重建演算法目前的研究狀況。
  4. 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。
  5. To fulfill the need of the application of rp technique in medical domain, reverse cad modeling from medical cross sections is systematically studied in this dissertation. firstly, some algorithms related to the research of this dissertation are studied. new algorithms for orientation and inclusion test for simple polygon, an error constrained automatic faring algorithm for b - spline curve and a theorem regarding the termination criterion for subdivision of triangular bezier patch are proposed

    本文針對rp技術在醫學領域應用的需要，系統研究了基於醫學斷層輪廓數據的反求cad建模理論和方法： （ 1 ）在基礎演算法研究部分，提出了簡單多邊形方向及點在多邊形內外判斷的新方法、三角b zier曲面片離散的誤差控制定理和一種帶誤差約束的b樣條曲線的自動光順方法； （ 2 ）提出了一種基於相鄰層輪廓相似性的醫學斷層輪廓數據曲面重構方法； （ 3 ）提出了一種稱為「虛擬測量」的曲面模型處理方法。
  6. Free form surface reconstruction is a key step in reverse engineering cad modeling. on the basis of segmentation, an approach of b - spline surface reconstruction with complicated boundary constraints is addressed

    基於復雜邊界約束和內部散亂逼近的b樣條曲面重構理論和技術的研究是本文的一個重點和創新之處。
  7. According to the particular characteristics of cad modeling in reverse engineering and the practical demands from customers, the author made an elaborate and in - depth study on b - spline surface reconstruction in three aspects, including b - spline surface fairing, local b - spline surface designing and b - spline surface approximating based on complicated boundary constraints

    本文結合反求工程cad建模自身的特點和用戶的實際需要，主要對b樣條曲面造型三個方面的工作做了較為細致和深入的研究和探討： b樣條曲面光順、 b樣條曲面局部設計和基於復雜邊界約束的b樣條曲面逼近。
  8. 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。
  9. Local b - spline surface designing strategy, a surface coincided technology, is proposed entirely originated from practical requirements in reverse engineering cad modeling

    B樣條曲面的局部設計是完全根據反求工程cad建模的實際需求而提出的一種局部區域曲面設計方案。
  10. Spline function is a very useful mathematical tool which is extensively applied to computer aided design ( cad ), computer aided manufacturing ( cam ), computer numerical control ( cnc ) and reverse engineering ( re ), and so on

    樣條函數是應用非常廣泛的數學工具，在計算機輔助設計（ cad ） 、計算機輔助製造（ cam ） 、計算機數控（ cnc ）以及逆向工程（ re ）等技術領域中更是必不可少的非常有用的工具，具有特別重要的工程意義。
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