时频分析工具箱 FRFT

说明：  matlab基础知识，PPT文件，内部资料简单，对于深入学习的人不是很合适(matlab basic knowledge, PPT files, internal information is simple, the depth of learning are not very suitable)

Program for Image Halftoning by Floyd Method: The input gray image will be converted into halftone image of same size using Floyd s Error Diffusion Method.

K-means聚类算法，用于文件、数据的聚类分析(K-means clustering algorithm for document clustering analysis of the data)

根据光伏电池数学模型所建立的Simulink光伏电池仿真模块，可设定光照强度、短路电流、开路电压、最大功率点电流与电压等参数。(According to the mathematical model of photovoltaic cell, the simulation module of Simulink is built, which can set the parameters such as light intensity, short circuit current, open circuit voltage, maximum power point current and voltage.)

黄金分割法（0.618）程序，以及进退法选择优化区间(Golden section method (0.618) procedures)

求解包装动力学在受到脉冲下的冲击谱,来算具体响应规律 (response shock spectrum)

HI ..This is soft decision decoding for convolutional coding...nice and good code.

MATLAB CODE FUNCTION CASCADE DETECT FACE AND RECOGNITION

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.)

matlab实现的小波变换，结果用轮廓线图表示(err)