quadratic spline 中文意思是什麼
quadratic spline
解釋
二次樣條-
The quadratic uniform b - spline curves are extended, and a class of polynomial blending functions of degree 3 and degree 4 are presented in this paper, which can be extended to the case of degree n
擴展了二次均勻b樣條基函數,構造出三次和四次帶局部參數_ i的調配函數,推廣后得到了n次的調配函數。 -
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。 -
Asymptotic property of a class of quadratic compactly supported spline wavelet interpolation
一類二次緊支撐樣條小波插值的漸近性質 -
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。 -
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 -
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。 -
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。 -
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。 -
The latest scheme for objective analysis and mathematical model of quadratic 8 spline connecting line is using for improving analysis quality. plotting test have shown that this scheme has the characteristics such as reasonable design, high quality in map analysis
一是採用三角形、矩形面積插值方案,並加入物理原則,提高了客觀分析質量;二是聯線數學模型採用二次樣條函數,大大改善了等值線的光滑和均勻度;三是屏幕等值線修改採用人機對話方式,操作十分方便。 -
In this paper, we not only illustrate the superiority of quadratic spline wavelet edge detection ' s arithmetic from experimental work, but also prove quadratic spline wavelet is optimum edge detection ' s arithmetic based on canny optimum criterions of edge detection
文中,我們不僅從實際工作中闡明了二次樣條小波邊緣檢測運算元的優越性,還從數學表達上推導了二次樣條小波是基於canny最優準則的最優邊緣檢測運算元。 -
In this paper, we define quadratic spline as wavelet, do the two dimentional dyadic wavelet transform on cell image, and get local modulus maxima from wavelet transform ' s results - modulus and angles, so we can find the cell image ' s edge image in each scales, at last, we compute optimum scale of cell image edge detection, and receive a good edge image which synthesize the characters in each scale
本文中我們用二次樣條小波作為小波基函數,對細胞圖像進行二維二進小波變換,計算小波變換結果的局部模極大值點,得到各個尺度下的細胞圖像的邊緣,計算細胞圖像邊緣檢測的最優尺度,最後得到綜合了各個尺度特徵的較好的細胞圖像的邊緣。 -
As a result, the curves of c3 and c4 continuity can be generated, and the shape of the curves can be adjusted by the parameters x. the quadratic non - uniform b - spline curves are further extended and the continuity of curves is improved in this paper ; with a local shape parameter in each piecewise curve, the shape of the curves can be controlled effectively ; moreover, cusps of curves can be generated conveniently on the curves while using multiple knots
對二次非均勻b樣條作了進一步擴展,提高了曲線的連續性;曲線的每一段上都有一個局部控制參數,利用它們可以更有效的控制曲線的形狀;同時,利用曲線的重節點可以很方便的在曲線上構造尖點。作為b樣條擴展曲線的應用,作者將上面構造的各次調配函數應用到三次- b樣條插值曲線上,得到下述結果。 -
It is also pointed out that these curves are devoid of split property possessed by nurbs curves in euclidean spaces. at the same time, a knot insertion algorithm is also given for the nurbs curves on sphere, then interpolation for curves on sphere is presented by spherical quadratic and cubic uniform b - spline
並且討論了這種曲線的若干性質,有類似於歐氏空間中的性質,還指出其不具有類似於歐氏空間中的nurbs曲線的分裂性質,同時給出球面nurbs曲線的插入節點演算法。
分享友人