huidu

This is a fast non-iterative ellipse fit, and among fast non-iterative ellipse fits this is the most accurate and robust. It takes the xy-coordinates of data points, and returns the coefficients of the equation of the ellipse: ax^2 + bxy + cy^2 + dx + ey + f = 0, i.e. it returns the vector A=(a,b,c,d,e,f). To convert this vector to the geometric parameters (This is a fast non-iterative ellipse fit, and among fast non-iterative ellipse fits this is the most accurate and robust. It takes the xy-coordinates of data points, and returns the coefficients of the equation of the ellipse: ax^2+ bxy+ cy^2+ dx+ ey+ f = 0, i.e. it returns the vector A=(a,b,c,d,e,f). To convert this vector to the geometric parameters )

1280点fft变换，改变传统的需2046点FFT的情况。(1280 point FFT，radix 4 and radix 5 )

meanshift跟踪的matlab源码，利用物体的颜色对物体进行跟踪(meanshift tracking matlab source, using the color of objects on the object tracking)

首先扼要地阐述矩量法分析天线的一般概念和基本思想，然后分别采用几种不同的积 分方程对线天线进行矩量法分析，并与解析计算结果进行比较，两者的一致性说明了计算结果的正确性。(First, a brief moment method analysis of antennas described the general concepts and basic ideas, and then were used for several different line of antenna integral equation moment method analysis, and results were compared with the analytical calculation, the consistency between the description of the calculation accuracy of the results.)

超松弛因子迭代法求解大型线性方程组的MATLAB程序(Super relaxation factor iteration method to solve large linear equations of the MATLAB program)

协作通信系统的仿真 matlab仿真例程(Cooperative sensing communication system )

采用MUSIC_like的方法，与传统方法不同的是，不需要估计信号源的个数，带有文献可参考(MUSIC like using a method with the traditional method is different, it does not need to estimate the number of sources, with documents refer)

tortional dynamics modeshape for 3phase system

一个是产生语音的波形和短时频谱，另一个是产生语谱图。(One is to generate voice waveforms, and short-term spectrum, and the other is to generate spectrogram.)

灰色理论认为系统的行为现象尽管是朦胧的，数据是复杂的，但它毕竟是有序的，是有整体功能的。灰数的生成，就是从杂乱中寻找出规律。同时，灰色理论建立的是生成数据模型，不是原始数据模型，因此，灰色预测的数据是通过生成数据的gm(1,1)模型所得到的预测值的逆处理结果。(Gray theory that the behavior of the system even though the phenomenon is dim, the data is complex, but still it is ordered, there is a whole function. Gray number generation, that is, from the clutter to find out the laws. Meanwhile, the gray theory is to generate the data model, not the original data model, so gray prediction data by generating data gm (1,1) model predicted values ​ ​ obtained result of the inverse process.)