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LU
- In linear algebra, LU decomposition (also called LU factorization) is a matrix decomposition which writes a matrix as the product of a lower triangular matrix and an upper triangular matrix. The product sometimes includes a permutation matrix as well
dtriangulation(8.26)
- 对输入的数据点进行三角刨分，并将三角刨分后得到的结果进行四边形划分，得到四边形网格-Input data points on the plane triangular points, and sub-triangular plane quadrilateral obtained by the results obtained quadrilateral mesh
homework_algo
- 一凸 8 边形P 的顶点顺时针为{v1，v2，… ，v8}，任意两顶点间的线段的权重由矩阵D 给出。 若vi 与vj 是P 上不相邻的两个顶点，则线段vivj 称为P 的一条弦。求P 的一个弦的集合T， 使得T 中所有的弦恰好将P 分割成互不重迭的三角形，且各三角形的权重之和为最小（一 个三角形的权重是其各边的权重之和）。 -A convex polygon P 8 vertex clockwise {v1, v2, ..., v8}, any two vertices of t
triangle
- 2D凸多边形的三角网格生成，可用gridgen。-2D triangular convex polygon mesh generation, available gridgen.
XhrSegmentation
- 实现三角网格的分割算法，对有噪声的模型也能够很好的分割效果。-Realization of triangular mesh segmentation algorithm, with noise model can also be a good segmentation effect.
str
- 用豪斯尔德变换将对称矩阵约化为对称三角矩阵-With symmetric matrix , transformation into a symmetric triangular matrix