Description:
在三次样条中，要寻找三次多项式，以逼近每对数据点间的曲线。在样条术语中，这些数据点称之为断点。因为，两点只能决定一条直线，而在两点间的曲线可用无限多的三次多项式近似。因此，为使结果具有唯一性。在三次样条中，增加了三次多项式的约束条件。通过限定每个三次多项式的一阶和二阶导数，使其在断点处相等，就可以较好地确定所有内部三次多项式。此外，近似多项式通过这些断点的斜率和曲率是连续的。然而，第一个和最后一个三次多项式在第一个和最后一个断点以外，没有伴随多项式。因此必须通过其它方法确定其余的约束。最常用的方法，也是函数spline所采用的方法，就是采用非扭结(not-a-knot)条件。这个条件强迫第一个和第二个三次多项式的三阶导数相等。对最后一个和倒数第二个三次多项式也做同样地处理。
-the Cubic Spline, to find three polynomial, approaching every right to point the data curve. The kind of terms, these data points called breakpoints. Because only two points a straight decisions, and in between the two curves can be used an infinite number of cubic polynomial approximation. Therefore, in order for the outcome of uniqueness. The Cubic Spline, add the cubic polynomial bound by the conditions. By limiting each cubic polynomial of the first order and second-order derivative, it breakpoint in the same Department, we can better identify all internal cubic polynomial. In addition, the polynomial approximation of these breakpoints slope and curvature is continuous. However, the last one and a cubic polynomial in a breakpoint and the final one, not accompanied by polynomials. There Platform: |
Size: 3072 |
Author:讲演 |
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Description: 不管对于图像的编码还是解码，三次样条算法的性能都是很好的，然后由于计算量比较大使他的效率有所下降，在次提出了一个考虑算法质量的前提下的快速算法。-regardless of the coding for images or decoding, cubic spline algorithm performance are good, and then because of the comparison calculation of the efficiency Ambassador he declined, in a meeting of the algorithm to consider the quality of the fast algorithm. Platform: |
Size: 275456 |
Author:王献中 |
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Description: de Boor 求值算法求作二次和三次B-样条曲线非插值，给定顶点-algorithm evaluates demand for secondary and cubic B-spline- curve interpolation, given vertex Platform: |
Size: 2048 |
Author:jo Wang |
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Description: 自行编写的三次样条插值函数源代码，并针对具体问题编写了程序求解-prepared by the self-cubic spline interpolation function source code, and issue-specific procedures for the preparation of the Platform: |
Size: 2048 |
Author:charming |
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Description: 使用MATLAB绘制3次均匀B样条曲线，有一定参考价值-The use of MATLAB drawn 3 times uniform B-spline curve, has a certain reference value Platform: |
Size: 1024 |
Author:卓雅 |
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Description: 这是一个三次样条插值的.m程序
输入的是一个二维数组A(Nx2)
插值方法为:
S(x) = A(J) + B(J)*( x - x(J) ) + C(J)*( x - x(J) )**2 +D(J) * ( x - x(J) )**3 for x(J) <= x < x(J + 1) -This is a cubic spline interpolation. M program input is a two-dimensional array A (Nx2) interpolation method: S (x) = A (J)+ B (J)* (x- x (J ))+ C (J)* (x- x (J))** 2+ D (J)* (x- x (J))** 3 for x (J) Platform: |
Size: 1024 |
Author:朱与心 |
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Description: 三次样条插值 MATLAB编程 可直接会出图像并输出样条函数-Cubic spline interpolation can be directly MATLAB programming will be the image and the output spline function Platform: |
Size: 10240 |
Author:niyang |
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Description: The inverse of the gradient function. I ve provided versions that work on 1-d vectors, or 2-d or 3-d arrays. In the 1-d case I offer 5 different methods, from cumtrapz, and an integrated cubic spline, plus several finite difference methods.
In higher dimensions, only a finite difference/linear algebra solution is provided, but it is fully vectorized and fully sparse in its approach. In 2-d and 3-d, if the gradients are inconsistent, then a least squares solution is generated Platform: |
Size: 11264 |
Author:徐亮 |
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Description: 运用三次样条插值函数法对一条已知的折线进行圆滑（编程实现）-The use of cubic spline interpolation function of a line known for sleek (Programming) Platform: |
Size: 2048 |
Author:guoshuchao |
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Description: 数值分析程序matlab-GUI----第一型三次样条插值函数（包括M文件和GUI）-Numerical analysis matlab-GUI---- the first type of cubic spline interpolation function (including M documentation and GUI) Platform: |
Size: 8192 |
Author:jzhuang |
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Description: Matlab版本三次样条插值，介绍了Matlab三次样条插值(有条件情况下)，可以在Matlab上直接运行-Matlab version of the cubic spline interpolation, introduced Matlab cubic spline interpolation (under certain conditions), can be run directly on the Matlab Platform: |
Size: 2048 |
Author:陈超 |
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Description: 该matlab源码为三次样条差值测试程序，通过了调试测试。-The matlab source code for the cubic spline difference test program, through the commissioning tests. Platform: |
Size: 2048 |
Author:马凝 |
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Description: 三次样条插值，适用matlab。三次样条插值是通过一系列形值点的一条光滑曲线，数学上通过求解三弯矩方程组得出曲线函数组的过程。-Cubic spline interpolation for matlab. Cubic spline interpolation through a series of key points of a smooth curve, mathematically by solving the three moment equations derived curve function group process. Platform: |
Size: 1024 |
Author:tracy |
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