threshold

这是一个关于SIFT算法介绍的pdf和ppt的合集，可以很好地帮助初学者了解sift算法。（中英文都有）(This is a collection of pdf and ppt about SIFT algorithm. I believe it can greatly help beginners to understand SIFT algorithm.)

自己实现的一维、二维DFT。优点：变换后的低频分量在中间，弥补了matlab库函数的不足（高频分量在中间）(Realize their own one-dimensional, two-dimensional DFT. Advantages: low-frequency components after the transformation in the middle, made up for the inadequacy of matlab library function (high-frequency component in the middle))

matlab 信号采样，补0采样并还原信号(matlab signal sampling, sampling up and restore the signal 0)

说明：  BP网络仿真实例参考:包含BP网络设计实例及仿真源程序.(BP network simulation reference: BP network design contains examples and simulation source.)

关于合成孔径雷达点目标仿真的小文章，其中包括具体的matlab程序，简单明了。(Synthetic aperture radar on a small point target simulation of the article, including specific matlab program, plain and simple.)

自适应继电保护设计 matlab程序 自动进行保护装置的整定(Adaptive Protection matlab program designed to protect the device automatically tuning)

该文研究了河南省不同年龄组的历史发展趋势和65岁以上人口未来发展趋势以及影响老龄化相关因素的问题。通过对不同时期的人口数据的分析和预测，从一个经典的模型入手，建立了三个不同的模型，分别 模型、 模型和关联分析模型，然后采用统计分析的方法来解决这些问题，预测出了河南省未来老龄化人口的发展。(This paper studies the different age groups in Henan Province of historical development trends and population over the age of 65, as well as the impact of future development trend of aging-related factors. Different stages of the analysis of population data and projections from a model of the classic, the establishment of three different models, namely, model, models and associated analysis model, and then using statistical analysis methods to solve these problems, predict the Henan Province, the future development of an aging population.)

利用MATLAB中的SVM工具箱做预测的一些分析，有详细的功能描述(Some analysts forecast SVM toolbox in MATLAB, a detailed functional description)

基于MATLAB Simulink的电力电子技术的仿真模型，包括：整流电路、逆变电路、直直电路、交交电路、PWM控制电路等。与《电力电子技术》机械工业版配套，包含书中所有的仿真算例。(Simulation model of power electronic technology based on Simulink MATLAB, and the mechanical industry version of power electronics technology , including all the simulation examples in the book.)

Mann-kendall趋势分析的Matlab程序(Mann-kendall Matlab)