yiqunsuanfa

Finding peak signal to quantization ratio

用于ycbcr空间检测人脸肤色，需要自己添加试验级。用photoshop软件将人脸涂白，其余的地方全部涂黑。(For YCbCr space to detect facial complexion, you need to add test level yourself. Photoshop software is used to whitewash the faces and the rest are blackened.)

一、 本程序采用16QAM调制方式，对一串2进制信源进行调制，用升余弦滚降函数进行基带调制，再调到高频信道；在信道上加入高斯白噪声，运用匹配滤波器解调，画出解调星座图，运用最小欧氏距离译码判决，计算误比特率。(First, this program uses 16QAM modulation mode, for a string of two binary source is modulated with a raised cosine roll-off function for base-band modulation, and then transferred to high-frequency channel in the channel by adding Gaussian white noise, the use of matched filter device demodulator, draw demodulation constellation, using the minimum Euclidean distance decoding decision, calculate bit error rate.)

二分法的Matlab程序实现。求解非线性方程f(x)=0的问题。而方程f(x)是多项式或超越函数又分为代数方程或超越方程。(Dichotomy Matlab program. Solving nonlinear equations f (x) = 0 problems. The equation f (x) is a polynomial or a transcendental function is divided into algebraic equations or transcendental equation.)

该程序是用matlab模拟生成一幅散斑图像的程序(The program is to generate a speckle image with matlab simulation program)

说明：  三相逆变器电压电流双环simulink模型(Three phase inverter voltage current double loop)

说明：  实现公历和农历之间的相互转换.包含了1899年到2100年202年的工农历数据，可以实现相互转换。(use to translate standard date and chinese data)

This code demonstrate CORDIC Rotation and Vectoring in circular mode. Also with compensation and angle correction. Also a code for Givens Rotation.

语音频率分析使用matlab实现，很经典了呵呵(Voice frequency analysis using matlab implementation, it is the classic of the Hehe)

matlab数字水印程序m文件程序，用的是小波变换中的dwt方法，并且把小波变换分成了四个子带，选择的LL子带。svd算法与dwt相结合，加密方法是混沌加密。与我刚才上传的dwt_svd_GUI.rar是一个程序，一个是gui的，一个是m文件。(m digital watermarking matlab program documentation procedures, using a wavelet transform method in the dwt and the wavelet transform is divided into four sub-band, choose the LL sub-band. svd algorithm with a combination of dwt, encryption method is chaotic encryption. I have just uploaded a dwt_svd_GUI.rar procedures, one is the gui, one m file.)