Differential-evolution-algorithm

initial a bp neural network which gene optimzed

A filter bank structure that can deal effectively with piecewise smooth images with smooth contours, was proposed by Minh N Do and Martin Vetterli. The resulting image expansion is a directional multiresolution analysis framework composed of contour segments, and thus is named contourlet. This will overcome the challenges of wavelet and curvelet transform. Contourlet transform is a double filter bank structure. It is implemented by the pyramidal directional filter bank (PDFB) which decomposes images into directional subbands at multiple scales. In terms of structure the contourlet transform is a cascade of a Laplacian Pyramid and a directional filter bank. In essence, it first use a wavelet-like transform for edge detection, and then a local directional transform for contour segment detection. The contourlet transform provides a sparse representation for two-dimensional piecewise smooth signals that resemble images.

sift using matlab prog

2D wave simulation in 3D plot. to help you understand the wave interference phenomenon.(2D wave simulation in 3D plot. To help you un derstand the wave interference phenomenon.)

滤波器设计示例：matlab设计IIR基本示例，matlab设计IIR高级示例，matlab窗函数设计FIR滤波器基本示例。(Filter Design Example: matlab basic sample design of IIR, matlab advanced example of IIR design, matlab window function, the basic design of FIR filter example.)

永磁无刷电机MATLAB仿真模型，验证成功(Permanent magnet brushless motor MATLAB simulation model proved to be successful)

实现近似熵算法。可以根据需要对程序进行必要地修改。(Achieve approximate entropy algorithm. Can carry out the necessary procedures needed to modify.)

deep learning code it helpful the begainer in deep learning

solving poison equation by matlab

wdcbm的使用（Birgé-Massart策略）和使用dencmp压缩信号 (wavelet,wdcbm(),Birgé-Massart strategy，dencmp())