task3

face recognition by using principle component analysis

DNA编码序列算法，很好用的，可以学习学习(DNA sequence encoding algorithm, very good use, you can learn)

various low pass filter examples like Hamming

Harmony Element Algorithm for function optimization with GUI

利用Harris角点检测算法很好的程序，通过互相关算法检测角NCC配准(Good program using Harris corner detection algorithm, detect corner through cross-correlation method for NCC registration)

1. 按照式计算相似性矩阵 2. 排除自身的相似度 3. 按照式计算归一化矩阵 4. 按照式计算归一化拉普拉斯图矩阵L 5. 计算L的特征向量，将前个特征值最大的向量按列放置成一个矩阵，即依次为前个特征值最大的特征向量 6. 归一化X形成矩阵Y 7. 对矩阵Y按每行为一个数据点，进行k-means聚类，第行所属的类就是原来所属的类。(1. similarity matrix based on formula computation 2. rule out your own similarity. 3. normalized matrix based on formula computation 4. normalized formula Laplasse matrix L according to formula. 5. Calculate the eigenvectors of L. Place the vectors with the largest eigenvalues in columns into a matrix, that is, the eigenvectors with the largest eigenvalues in turn. 6. normalized X formation matrix Y 7. K-means clustering is applied to matrix Y according to one data point per behavior. The first row belongs to the original class.)

利用串口或者蓝牙的通信方式将采集到的心电数据绘制成波形，并与matlab混合编程实现小波分析(Using serial or Bluetooth communication will be collected ECG data plotted waveform, and Hybrid Programming with matlab wavelet analysis)

MATLB7.0文件处理,经典，辛苦整理(MATLB7.0 document processing, classic, hard-finishing)

Mathematical formula

用短时平均能量值对干净的语音信号进行检测，可以区分语音和非语音部分(With short time average energy value to test the clean speech signal, can distinguish between voice and non-voice part )