fit_ellipse

speed control of brushless dc moter

基于Fisher线性判别的基因分类器的设计，里面有源程序(Fisher linear discriminant based on the gene classifier design, which has source code)

PCA based Feature Extraction and Matching

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

隐马尔科夫模型是语音识别中的重要算法思想，这里在matlab下实现了一个原理性的算法(Hidden markov models is an important algorithm in speech recognition, here under the matlab implements a rational algorithm)

Rate equation simulation for semiconductor laser using ODE45 function

用matlab仿真了LDPC码的编码译码程序，及其用BPSK调制传输。并测其误码率(Matlab simulation of the LDPC codes with coding and decoding process, and its transmission with BPSK modulation. And measure its error rate)

说明：  基于MATLAB的PQ法潮流计算的计算机编程(flow)

A program for object tracking in image processing

对数据进行包络分析，直觉调用数据，一种利用信号来分析故障的程序(The data envelopment analysis (dea), intuition call data, using a signal to failure analysis program)