bezier points 中文意思是什麼
-
Then we use bernstain - bezier triangles to interpolate these points and reconstruct the worm gear surface. a new digital model of worm gear is provided. we can use this digital model to cnc, rp & rm, interference - detecting, etc. finally, we refit a y35j2 nobbing machine into a five - coordinate cnc machine
在這一方案下，提出以截交線上的型值點作為刀觸點制定走刀軌跡的方法，以y35j2型滾齒機為實踐平臺提出加工平面二包蝸桿副的數控改造方案，對這一方案進行了計算機模擬。 -
( 2 ) offset approximation for bezier curves the problem of parametric speed approximation of a curve is raised. the author points out that the crux of offset curve approximation lies in the approximation of parametric speed
（ 2 ）等距曲線逼近（ offset ）提出了曲線參數速度逼近問題，指出等距曲線逼近問題的關鍵在於參數速度的逼近 -
Hence designers can adjust the shape of curves by changing not only control points but also shape factor. our experiments show that h - bezier model approximate to the control polygon more closely than bezier model. so they are suitable to shape design and modeling in cad systems
而且h - b zier曲線還引入了一個稱為形狀因子的參數，形狀設計者不僅可以像b zier曲線一樣通過調節控制多邊形來控制曲線形狀，而且還可以調節形狀因子來調整曲線對控制多邊形的逼近程度 -
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。 -
In chapter 4, we research a way how to generate curve by discrete points. the way uses several low - order bezier curve to substitute one high - order bezier curve in order to avoid computing high - order negative matrix. the curve produced by this way has good smoothness
第四章對由離散點構建曲線進行了研究，繞過高階矩陣求逆，把由k個低階的bezier曲線拼合產生的復合曲線來代替單一的高階bezier曲線，並保證曲線之間的光滑過渡。 -
In the second chapter some problems for degree reduction of bezier curves and surfaces are studied. in this chapter, degree reduction of bezier curves with points constraints is proposed and the new approach of constrained optimization is brought in light. the stepwise method for degree reduction of rectangular bezier surfaces is further discussed
第二章研究b zier曲線曲面的降階逼近問題，在這一章中，提出了b zier曲線的點約束降階逼近新問題，並給出了約束優化方法；討論了張量積b zier曲面的逐步降階逼近新方法，此方法的優點是直接利用b zier曲線的降階逼近方法解決張量積b zier曲面的降階逼近問題。 -
In the curve and surface modules of this system b - splines curves and bezier surfaces are manipulated by moving their control points to new user defined locations. and for nurbs curves, the extra degree of freedom called weights is used to manipulate the shape of curves or surfaces. in the thesis, the preliminary research and development are made in the generation of nc codes for outline machining and output of nc codes text file
採用互動式控制dof對nurbs曲線、曲面的設計與修型和通過移動曲線曲面上的控制點對b樣條曲線和貝塞爾曲面的互動式直接修型兩種方法，開發了曲線、曲面cad模塊；本文還對數控編程軟體開發中外輪廓加工的數控代碼生成和代碼文本文件輸出進行了初步的研究與開發。
分享友人