% This code solves the NLS equation with the split-step method % idu/dz - sgn(beta2)/2 d^2u/d(tau)^2 + N^2*|u|^2*u = 0 % Written by Govind P. Agrawal in March 2005 for the NLFO book %---Specify input parameters clear all; % distance = input(’Enter f
N=512; A=zeros(N,N); B=zeros(N,N); for I=1:1:256 J=1:1:256 ImageNum=double(Image(I,J,1)); A(I,J)=ImageNum/255; B(I,J)=0; end end figure; imshow(A); pi=3.1415926; for I=1:1:N for J=1:1:N R=rand(1,1);%生成一个元素在0,1之间均匀分布的随机矩阵R B(I,J)=A(I,J)*sin(R*2*pi);%
import numpy as np from numba import jit jit def VMD(signal, fs, T, alpha, tau, K, DC, init, tol): f_mirror = np.zeros((2*T)) for i in range(T//2): f_mirror[i] = signal[T//2-1-i] for k in range(T//2, 3*T//2): f_mirror[k] = signal[k - T // 2] for l i
