b-spline curve 中文意思是什麼

b-spline curve 解釋
木條曲線
  • b :
  • 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。
  • curve : n 1 曲線；彎曲；彎曲物。2 曲線規 （＝French curve）；【機械工程】曲線板；【棒球】曲線球；【統計學...
  1. They not only inherit the advantages of bezier curves and b - spline curves, also can be used to represent straight lines precisely and some remarkable transcendental curves precisely, such as circular arc, ellipse, cardioids and twisted pair line etc. especially, the uniform t - b - spline curve of three degrees is smoother than b - spline curve and c - b - spline curve of the same order

    此外由於它們還具有三角函數的優點，故既可以精確表示直線段、二次多項式曲線段又可以精確表示圓弧、橢圓弧等二次曲線以及心臟線、雙紐線等超越曲線。特別地， 3次均勻t - b樣條曲線曲面比同階均勻b樣條（ c - b樣條）曲線曲面具有更高的光滑度。
  2. Densifying contour map based on intersecting algorithm of line and b - spline curve

    樣條曲線求交演算法加密等高線圖
  3. The thesis tells surface analysis method including curvature analysis and curve depth analysis that we using in the skin restoring project. in chapter 2, it tells the definition of b - spline curve and surface and the fundamental algorithm - de boor algorithm for points of curve and surface. as to reconstruct surface from ct data, we discuss some basic algorithm and introduce the wrapping skin algorithm

    在第二章中，介紹了b樣條曲線曲面的定義及基本演算法- -求曲線曲面點的德布爾演算法；基於ct數據的曲面重構，討論了重構過程中所應用到的基本演算法（如節點插入及消去演算法、曲線的反算方法等） ，並介紹了曲面重構中常用的蒙皮法。
  4. The dissertation is summarized as follows : 1 ) b - spline curve fitting is studied. several curve fitting methods are disc ussed, and a method for b - spline curve fitting in the specified tolerance is pr esented. 2 ) b - spline surface fitting is studied

    作者完成的主要工作如下： 1 ）研究了b樣條曲線擬合的問題，討論分析了數種常用的曲線擬合方法，並提出了一種給定允差下b樣條曲線擬合的方法。
  5. B - spline curve allows local control over the shape of a spline curve

    （ b樣條曲線允許局部控制曲線的形狀。 ）
  6. A b - spline curve allows local control over the shape of a spline curve

    （ b樣條曲線允許局部控制曲線的形狀。 ）
  7. In proc. acm siggraph, 1994, pp. 303 - 309. 21 pottmann h, leopoldseder s, hofer m. approximation with active b - spline curve and surfaces

    此處，我們引入了具有最小能量的控制曲線，由此降低了曲面次數並很好的控制了曲面的形狀。
  8. During the past decades, some researchers, such as : bezier, kj. versprile, deboor and cox, etc. had made great progress in the filed of constrained b - spline curve and surface fitting. in this article the method of constrained b - spline curve was introduced, which is used to figure out the control vertexes. using this interpolation method we can calculate every points of a uniform b - spline

    並且分析了在各種端點情況下，在重節點的情況下，如何反算控制多邊形的頂點；如何在求出控制多邊形頂點之後，插值計算b樣條擬合曲線上的每一點；並通過結合雙尾船的型線，採用visualc + +和autocad2002為平臺，分別編制了相應的軟體，對提供的型值做出繪圖處理，取得了良好的效果。
  9. It offers the idea according to problem faced, considering the good character of the ends, the ajusted cubic b - spline curve is used to fit ship lines. it finds out the control vertexs according to a sequence of given points, and then, through particular formula, each point in the curve could be worked out. it smoothes lines with the method based on small - paramter

    針對面臨的問題，提出了自己的思路，在數學計算方法上，由於三次準均勻b樣條曲線良好的端部性質，這里用它來擬合船舶型線，首先根據所給的初步型值求出其控制頂點，然後根據相關公式進行插值便能得到曲線上的所有插值點。
  10. Optimization of cam contour by b - spline curve

    樣條曲線優化設計凸輪廓線
  11. They have the properties like the quadratic uniform b - spline basis functions. the piecewise polynomial curves generated by the above - mentioned functions possess the same structure and geometry properties as piecewise quadratic uniform b - spline curve

    它們具有二次均勻b樣條基函數的性質，且用它們生成的分段多項式曲線具有與分段二次均勻b樣條曲線相同的結構和幾何性質。
  12. The result shows that the sufficient and necessary condition of the quadratic rational b - spline curve ' s curvature monotony is similar to the quadratic rational bezier curves ", but its condition is some different from the quadratic rational bezier curves " curve ' s rendering algorithm is an important content in computer graphics, cad

    曲線的生成演算法是計算機圖形學的重要內容。對於一些基本曲線，如直線，圓，橢圓等，都有快速生成演算法，如畫直線的bresenham演算法， dda演算法，畫圓的bresenham演算法，中點法，正負法， pitterway的橢圓及拋物線繪制演算法等等。
  13. 18 cohen f s, huang z, yang z. invariant matching and identification of curves using b - spline curve representation

    第四，利用圖像畸變的拓撲不變性質對特徵匹配剪枝，降低計算代價。
  14. In fact, rational quadratic bezier curve is just a special form of rational quadratic b - spline curve, the condition of quadratic rational b - spline curve is similar to quadratic rational bezier curve

    事實上，二次有理b zier曲線是二次有理b樣條曲線的特例，二次有理b樣條曲線曲率單調的充要條件是否與二次有理b zier曲線相類似
  15. We have more important significance studying quadratic rational b - spline curve ' s curvature monotony. this paper derive the curvature monotony condition for the quadratic rational b spline curves by using the skew coordinate system that can reduces the calculation process. and the curvature monotony condition is compared to the quadratic rational bezier curves "

    本論文通過建立斜坐標系，簡化了計算過程，推導出了二次有理b樣條曲線曲率單調充要條件，並與二次有理b zier曲線的曲率單調條件相比較，結果表明：二次有理b樣條曲線曲率單調的充要條件與二次有理b zier樣條曲線相類似，但其條件又有不同。
  16. Comparing with the quadratic b - spline curve, they have advantages by themselves : firstly, the shape of the curves can be adjusted locally by the parameters i ; secondly, the curves formed by blending functions of degree 4 can be g2 continuous. in addition, in order to meet various requests for continuity of curves in practical applications, corresponding polynomial functions can be used to construct the curves

    但與二次均勻b樣條曲線相比，它們還有其自身的優點：首先，曲線的形狀都可用參數_ i進行局部調整：其次，四次調配函數所構造的曲線就可達到g ~ 2連續；另外，為了滿足實際應用中對曲線連續性的不同要求，可使用相應次數的調配函數來構造麯線。
  17. 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。
  18. Studying on simplification algorithms of " points cloud " data, putting forward three kinds of simplification algorithms of " points cloud " data according to the point number of data set after simplification and the density of data set and the uniformation of curvature change at control point by b spline curve interporlation

    簡化「點雲」數據演算法的研究，提出了按指定數據集點的個數、按數據集點的密度閾值和按b樣條曲線插值型值點處曲率變化是否均勻簡化「點雲」數據的三種演算法。 3
  19. 4. the local interpolation methodd above are extended from order 4 to the case of arbitrary order, the existence for singular piecewise function of arbitrary order is proved, and a unite interpolation formula for odd and even - order is given, which develop and perfect the nuat b - spline curve and surface interpolation methods

    4 .將四階混合插值法推廣到任意階情形，給出任意階奇異分段函數存在性的證明，並得到了奇數階和偶數階樣條奇異混合插值公式的統一表達式，發展和完善了nuatb樣條插值方法和奇異混合思想
  20. A new representation of uniform b - spline curve

    樣條曲線的一種表示形式
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