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Butterworth hih/low and band pass filters are applied to image

说明：  一种从采样数据构造概率密度函数的方法 sample to pdf (sample to pdf)

摄像机标定方法张正友方法中图像坐标的提取。一种全新的方法(camera calibration method is Zhang Friends methods of extracting image coordinates. A new method)

认知无线电 协方差检测算法 功能强大而全面 适用于初学者(Cognitive radio covariance powerful and comprehensive detection algorithms for beginners)

MATLAB CODE FOR BEAM

实现数字图像相关（DIC）方法的计算的Matlab代码(Matlab code for Digital image correlation (DIC) method)

地震数字处理的基本程序，其中包括滤波褶积，fft，dft，自相关互相关，以及偏移等，对地质学人员比较有用(Digital processing seismic basic procedures, including convolution filter, fft, dft, autocorrelation cross correlation, and offset, etc., more useful for people geology)

说明：  基于牛顿拉夫逊法的电力系统潮流计算程序，适用于电气工程及其自动化学生毕业设计使用(Power flow calculation system )

关于Vega Prime的12篇期刊论文，涉及VP多场景切换、坐标系、多通道、飞行视景仿真等问题，有相当的参考价值。(About Vega Prime' s 12 journal articles, and more scenes involving VP switching coordinates, multi-channel, flight visual simulation and other issues, there is considerable reference value.)

该算法基本思想是利用一组带有相应权值的随机样本即粒子去逼近PHD分布和基数分布，其意义在于不仅解决重积分计算没有闭式解的难题，而且在滤波过程中，PHD函数被一系列离散的带权值的样本近似，随着样本粒子数量的增加，PHDF接近于Bayes最优估计，而且不受模型线性和高斯假设的限制，可以适用于非线性非高斯的随机系统。(The algorithm the basic idea is to use a set of random sample with the corresponding weight namely particle approximation PHD and base distribution, its significance lies in not only solve the problem of multiple integral calculation without closed solution, and in the process of filtering, PHD function by a series of discrete weighted value of sample approximation, with the increase of sample particles, PHDF close to the Bayes optimal estimation, and is not subject to the assumptions of the linear and gaussian model can be applied to nonlinear non-gaussian stochastic system.)