非均勻有理 的英文怎麼說

中文拼音 [fēijūnyúnyǒulǐ]
非均勻有理 英文
nurbs
  • 非 : Ⅰ名詞1 （錯誤） mistake; wrong; errors 2 （指非洲） short for africa 3 （姓氏） a surname Ⅱ動詞1 ...
  • 均 : Ⅰ形容詞（均勻） equal; even Ⅱ副詞（都; 全） without exception; all
  • 勻 : Ⅰ形容詞（均勻） even Ⅱ動詞1. （使均勻） even up; divide evenly 2. （分出一部分） spare
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 有理 : 1 （有道理） reasonable; justified; in the right 2 [數學] rational; 有理函數 rational function; ...
  1. This thesis gives a brief account of the basic theories of software engineering and computer graphics, of the data structure of individual component modeling, of the design of the software structure and of the method of realizing software. meanwhile, this thesis put more emphasis on the exploration of the arithmetic of the delaunay triangle network, nurbs curve integration, the filling - in arithmetic of triple - tree, and the arithmetic based on the scan - line arithmetic and the filling - in of complex section

    文章介紹了關于軟體工程學與計算機圖形學的基本理論及其各組件模型的數據結構、軟體結構設計與軟體實現的技術方法，並重點討論了基於約束條件的delaunay三角網格化演算法、 nurbs （非均勻有理b樣條）曲面擬合、三叉樹等值線填充演算法和基於掃描線的復雜剖面填充演算法。
  2. 12 orrite c, blecua s, herrero j e. shape matching of partially occluded curves invariant under projective transformation. computer vision and image understanding, 2004, 93 : 34 - 64

    此外，匹配的特徵相似性度量結合了非均勻有理b樣條的畸變估計和局部的圖形窗口交叉相關性，從而融合了幾何結構和圖像灰度的相似性。
  3. First, in virtual of identification of flaws is a typical of in - verse problems, proceeding from time - harmonic electromagnetic maxwell ' s equa - tion and helmholtz equation, the uniqueness and existence of direct scattering problems including the numerical algorithms of diverse of boundary conditions is given. second, the uniqueness and existence of inverse scattering problems and the theory of ill - posed integral equation are briefly looked back upon. finally, indicator function method for boundary identification is set up under all kinds of boundary conditions for inverse scattering of homogenous and inhomogenous objects, meanwhile, the proof of possibility for near - field measurements and nu - merical simulation are given

    由於缺陷的識別是一類典型的反問題，因而首先從時諧電磁maxwell方程和helmholz方程出發，具體地闡述了求解正散射問題的有關方法，包括各種（夾雜）邊界條件下的數值解法，就解的存在性唯一性給予了肯定的回答；隨后對逆散射問題的理論作了簡短的回顧，包括解的唯一性以及非線性不適定積分方程的處理等；然後對均勻介質和非均勻介質的逆散射問題建立了在各種邊界條件下的邊界識別的指示函數方法，鑒于近場數據獲得的重要性，對近場測試時邊界識別的方法給予了相應的證明，並且實現了數值模擬。
  4. Its accomplishment is simple and intuitional. the main innovation of this method is that we only need construct a symmetric zonal mesh for each interpolated curve respectively and write appropriate knot spacings for mesh edges. then applying nurcc rules to the initial control polygonal mesh consisting of those symmetric zonal meshes can generate a surface that satisfies interpolation constrains

    該方法的主要創新思想是在被插值曲線的控制多邊形兩側構造具有簡單對稱性質的四邊形網格，稱為對稱網格帶，但關鍵還在於對網格邊賦予適當的節點距，並對由這些對稱網格帶組成的初始控制網格應用非均勻有理catmull一clark細分規則，來生成滿足插值要求的曲面
  5. Another algorithm is based on pixels : sample many points along the curve, round them to the nearest integer and set each pixel the computed point falls in. although this algorithm uses integer arithmetic, it provides the smooth curve possible at the expense of computation time as many points have to be computed to ensure that no gaps are created along the curve. furthermore these two algorithms we mentioned above is appropriate for low degree parametric curves, for high degree parametric curves, we usually approach them by using low degree rational parametric curves, the generating curve ' s fairness property is not very good

    我們知道當節點矢量的兩端節點均為k重節點且無內節點時， b樣條基函數退化為bemstein多項式，因此該生成演算法還可推廣到b能ier曲線中，具有廣泛的應用價值、同樣地，在cad和cagd中，有理b樣條曲線，特別是非均勻有理b樣條曲線（ nurbs ）已經成為曲線曲面設計中最廣為流行的技術，然而對這些曲線目前也尚無很好的曲線生成演算法，因此有理b樣條曲線的生成演算法無疑有著更重要的意義
  6. In addition, from the angle of removing the negative gain media in the cycling gas and the excitation - counteracting media, we put forward the eliminating the impurity by using of the non - uniform stationary electrical field and the swirling electrical field so as to improve the effective excitation of the laser media

    本文還從清除循環氣體中負增益介質以及消激發介質的角度來改善激光介質的有效激發，提出了使用非均勻靜電場和渦旋電場清除雜質的方案。理論分析與部分實驗驗證表明，這兩種方案都能有效地清除混合氣中的雜質。
  7. The main contents include the construction of subdivision surfaces satisfying the constrain of curves interpolation based on catmull - clark subdivision scheme, the interpolated curves are uniform b - spline ; the construction of subdivision surfaces interpolating nurbs curves based on non - uniform rational catmull - clark ( nurcc ) subdivision scheme ; generation of sharp features on subdivision surfaces ; application of subdivision surfaces in the traditional surface design method - skinning

    其內容主要包括：基於catmull - clark細分演算法構造滿足曲線插值約束的細分曲面的方法，被插值曲線為均勻b樣條曲線；基於非均勻有理catmull - clark細分演算法構造能夠插值nurbs曲線的細分曲面的方法；細分曲面上尖銳特徵的生成方法；細分方法在曲面設計的傳統方法?蒙皮法?中的應用等。
  8. From the analytical point of view, with the aid of the numerical simulation, we investigate the propagation properties of optical pulses for the nonlinear schrodinger equation in picosecond regime, the higher - order nonlinear schrodinger equation in femtosecond regime, the nonlinear schrodinger equation with varying gain / loss and frequency chirping in homogeneous optical fibers, and ginzberg - landau equation that describes ultrashort pulses in the presence of self - frequency shift, respectively

    本文從解析的角度出發，同時藉助各種微擾理論和數值分析方法，分別研究描述皮秒光脈沖傳輸的非線性薛定諤方程、飛秒光脈沖傳輸的高階非線性薛定諤方程、非均勻光纖中光脈沖傳輸的含有頻率啁啾和增益損耗項的非線性薛定諤方程以及描述超短光脈沖傳輸的ginzberg - landau方程的解的特性，為進一步實現超高速、大容量的光信息傳輸提供一定的理論依據。
  9. First, this paper construct the mathematical model of blade according to the original data point of blade surface with 23 degree nurbs ( non - uniform - rational b - spline ) surface

    首先，本文根據葉片型面原始型值點數據信息，提出了較合理的數學模型，採用23次非均勻有理b樣條擬合葉片型面，成功的擬合了葉片空間型面。
  10. Thirdly, the effects on the cv rational interpolating splines from the perturbation of the two boundary conditions are analyzed. from this the error bounds of first and second derivatives of cv rational interpolating spline are given

    然後，分析了兩類端點條件的擾動對cv有理插值樣條函數的影響，給出了它們在非均勻節點處的一階和二階導數值的誤差界
  11. Polynomial, transcendental function, new quadratic curve, b - spline and nurbs have been used in expression of hull molded line, trapezoidal method, simpson method have been used in static calculation

    在船體型線的表達方面有多項式、超越函數、新二次曲線、 b樣條函數、非均勻有理b樣條函數等。
  12. Incorporating the non uniform rational b spline ( nurbs ) which is the only definition of the form of industry products, the author selects the method of b spline to do the numerical computation research work of the hydrodynamics of three dimensional ship hull based on the reading and analysis of the documents about hydrodynamics, especially the interaction hydrodynamics

    作者在對與船體水動力尤其是干擾水動力的研究相關的文獻的閱讀與分析的基礎上，結合作為定義工業產品幾何形狀的唯一數學描述的非均勻有理b樣條方法，選擇b樣條（統一成非均勻有理b樣條形式）來進行有關三維船體水動力的數值計算研究工作。
  13. Since hess and smith invented panel method in 1962, panel method has been widely used as a tool for potential flow calculations, such as one order panel method, high order panel method, b - spline and non - uniform rational b - spline based panel method ( nurbs )

    自從1962年hess和smith提出面元法以來，面元法已經被廣泛用作為勢流計算的工具，並且已經有了很大的發展。如一階面元法、高階面元法、 b樣條方法及非均勻有理b樣條方法等。
  14. An introduction to the curves and surfaces of computer - aided design, robert c. beach van nostrand reinhold, new york

    《計算機輔助幾何設計與非均勻有理b樣條》施法中著北京航空航天大學出版社1994 ， 10 。
  15. In order to verify the feasibility of the present method, chapter 3 takes the fluid flow of sphere, cylinder and the additive mass of two spheres as three examples, finishes the calculation by disposing the source or sink whose strength is expressed as the format of nurbs and emphatically the processing of the singular integral. it can be drawn from the comparison of the results of present method and the theoretical solution, i. e. a good precision can be gotten under a few collocation points with the method

    為了考查本文方法的可行性，第3章以圓球體繞流、圓柱繞流以及兩個等圓球體在流場中的附加質量作為例子，通過在物體表面布置強度以非均勻有理b樣條表達的源匯和著重對奇異積分的處理后完成了相應的計算，從與理論解的比較可以看出本方法的優越：在數目很少的配置點下數值解可取得十分良好的精度。
  16. 14 rattarangsi a, chin r t. scale - based detection of corners of planar curves

    第二，使用耦合的非均勻有理b樣條表示任意圖形畸變。
  17. Non - uniform rational b - spline ( nurbs ) basic parameters of the electrode surfaces were extracted, and the electrode surface was adaptively scattered to a mesh in the compensation process of offset

    在偏置補償過程中提取非均勻有理b樣條（ nurbs ）電極曲面的基本參數，對電極曲面進行網格離散。
  18. Image and vision computing, 1999, 17 : 489 - 499. 4 gottschalk p g, turney j l, mudge t n. efficient recognition of partially visible objects using a logarithmic complexity matching technique. the international journal of robotics research, 1999, 8 : 110 - 131

    它從以下幾方面解決以上問題：第一，高尺度的分析突出了圖像的高頻部分，因此能夠更準確地匹配圖像特徵第二，利用非均勻有理b樣條表示圖像畸變，這對大多數現實的圖像幾何畸變都適用。
  19. Modern cad systems widely adopt nurbs ( non - uniform rational b - spline ) as the main modeling entity because they can represent other commonly used parametric curves and surfaces, while also being able to precisely present the natural quadric shapes such as cones and cylinders

    許多國內外流行的優秀cad cam軟體都聲稱其曲線、曲面模型建立在nurbs （非均勻有理b樣條）理論和方法的基礎上。
  20. Since nurbs curves possess stronger ability than uniform b - spline curves in shape representation, we give a method of generating non - uniform subdivision surface modeling by improving nurcc surface proposed by sederberg et al. this method can interpolate predefined nurbs curves based on nurcc surface while maintain nurcc surface ' s basic function of the controllability of the continuous order

    由於nurbs曲線比均勻b樣條曲線具有更為強大的形狀表示能力，浙江大學博士學位論文因此作者通過改造sederberg等提出的非均勻有理catmull一clark曲面（簡稱nurcc ）生成方法，給出了非均勻細分曲面造型新方法
分享友人
分享到 Line

分享到臉書