HS-collaborative-verification

人脸识别程序代码 基于MATLAB的人脸识别代码(Face recognition code based on MATLAB code for face recognition)

2013年秋季 北京航空航天大学惯性导航第一次大作业，指北方位平台惯导系统解算(homework of inertial navigation of beihang university )

去噪后的性能指标计算，其中包含信噪比、均方误差以及平滑度指标。(After denoising performance index calculation, including signal-to-noise ratio, the mean square error (mse) and smoothness index. )

matlab codes for basic algorithms for MRI

MATLAB与DELPHI的接口实现很多种方法(MATLAB' s interface with the DELPHI)

梯度下降法是一個一階最佳化算法，通常也稱為最速下降法。 要使用梯度下降法找到一個函數的局部極小值，必須向函數上當前點對應梯度（或者是近似梯度）的反方向的規定步長距離點進行疊代搜索。如果相反地向梯度正方向疊代進行搜索，則會接近函數的局部極大值點；這個過程則被稱為梯度上升法。(The gradient descent method is a first-order optimization algorithm, also commonly referred to as the steepest descent method. To find the local minimum of a function using the gradient descent method, an iterative search must be performed to the specified step distance point in the opposite direction of the gradient (or approximate gradient) of the current point on the function. If the search is reversed in the opposite direction to the positive direction of the gradient, it will approach the local maximum point of the function; this process is called the gradient ascent method.)

Gabor filters image processing

说明：  基于matlab。利用FFT计算信号的频谱并与信号的真实频谱的抽样比较。 脚本文件T2F.m定义了函数T2F，计算信号的傅立叶变换。(Based on matlab. Calculated using FFT frequency spectrum and the true spectrum of the signal sample comparison. Script file defines a function T2F.m T2F, calculate the Fourier transform of the signal.)

说明：  这是一个matlab程序用于构建人工神经网络模型，可以随意设置层数和单元个数！(This is a matlab program for building artificial neural network model can arbitrarily set the number of layers and units!)

一个实现粒子群优化算法的简单matlab程序(A simple particle swarm optimization algorithm matlab program)