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yuv2mov 读取一个YUV格式的文件，生成MATLAB 结构类型的数据.mov2yov生成一个YUV格式的文件(YUV format yuv2mov read a document, generate MATLAB structure types of data. mov2yov generate a YUV file)

精通MATLAB，学习MATLAB时，不错的参考资料，适合自学。(Proficient in MATLAB)

周期对称方波信号的傅里叶级数展开 有限项级数来逼近无限项级数(fourier series )

ce source est utiliser pour la classification

说明：  用matlab实现的二维圆拟合和三维圆拟合

（1）离散余弦变换DCT基底灰度图像绘制（2）离散傅里叶变换DFT基底灰度图像绘制((1) discrete cosine transform DCT base gray image rendering (2) Discrete Fourier Transform DFT basal gray image rendering)

说明：  遗传算法（Genetic Algorithm）是一类借鉴生物界的进化规律（适者生存，优胜劣汰遗传机制）演化而来的随机化搜索方法。(Genetic Algorithm (Genetic Algorithm) is a kind of reference for the evolution of biology law (the survival of the fittest, superior bad discard Genetic mechanism) evolved random search method. )

小波变换进行变速箱故障诊断 首先将s1和s2信号时域谱（s1代表维修前的振动信号，s2代表维修后的振动信号），画出来进行对比，会发现s1信号的振动幅值会比较高；然后对s1和s2分别进行小波分解并画出各层的时域谱，只对比s1和s2分后的最高时域谱，s2更加的具有周期性，且幅值较小，s2周期性不够明显，且振动过于密集。分析完时域谱后开始分析频谱，首先对原信号s1和s2fft转换，得到频谱图，如图，然后再对小波分析后高频部分进行fft转换，做出频谱图。对比后我们发现，在f 2375HZ出（也就是齿轮的啮合频率），s1信号频谱幅值会有急剧的升高，然后，其谐波的幅值也会增大。所以可以推断出该维修前的增速箱的齿轮可能出现问题。(Gearbox fault diagnosis based on wavelet transform s1 and s2 first time domain signal spectrum (s1 behalf of the vibration signal before maintenance, vibration signal s2 representative of repaired), drawn comparison, you will find a signal s1 vibration amplitude will be higher then s1 and s2 respectively wavelet decomposition and draw the layers of time-domain spectrum to only a maximum time domain spectroscopy s1 and s2 points after, s2 is more cyclical and smaller magnitude, s2 cyclical enough obviously, and the vibration is too dense. End domain spectral analysis after the beginning of the spectrum analysis, the first of the original signal s1 and s2fft conversion to give the spectrum, as shown, and then after the high frequency part of wavelet analysis fft transformation to make spectrum. We found that after the comparison, at f 2375HZ out (i.e. the gear mesh frequency), there will be a sharp increase in the amplitude spectrum of the signal s1, and then, the amplitude of the ha)

speech recognition code for matlab

基于FFT的图像匹配，用傅立叶变换对图像进行匹配！分别对模板和匹配图进行傅立叶变换(image Regsiter use FFT )