利用itk写的一个通用模板类，用于做3维血管的增强，根据的理论为Frangi提出的Vessel enhancement diffusion。-3D Vessel enhancement filter programmed by c++ and itk lib, acroding to Vessel enhancement diffusion proposed by Frangi 2001.

用于2维、3维的血管图像增强，根据的理论为Frangi提出的Vessel enhancement diffusion。-2D and 3D vessel enhancement filter acording to Vessel enhancement diffusion proposed by Frangi 2001

matlab code 12423423422424

Frangi最初提出的计算Hessian矩阵，计算特征值，构造血管增强函数，进行血管增强，Matlab代码，可直接运行。特征值计算为c语言代码，容易将整个算法转化为C或C++，非常有用。(Frangi was first proposed to calculate the Hessian matrix, to calculate the eigenvalues, to construct the vascular enhancement