计算图片的特征值，实现两张图片相似度的计算-Calculate the eigenvalue of two image and get they similarity

In mode analysis it is usually the primary goal to find a propagation constant. This quantity is often, but not always, real valued if the analysis involves some lossy part, such as a nonzero conductivity or an open boundary, the eigenvalue is co

特征值法拟合平面，估计出平面参数，可直接运行-The eigenvalue method fitting the plane, estimated plane parameters, and can be run directly