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基于PCA的人脸识别 Matlab代码 两种方法 KL 和kernel(PCA-based face recognition Matlab code)

流形学习，局部线性嵌入式算法(LLE)，一种智能的算法去推测捕捉高维空间中所包含的低维特征。与适合于局部维数约减的聚类算法不同，LLE算法在单一的低维的全域坐标系统中表征采样空间，然而它并没有优化最小局域。通过对线性重构的局域对称的研究应用，LLE能够描述非线性流形的全局结构，例如那些人脸的数据集或者文本文档集(Manifold learning, embedded local linear algorithm (LLE), an intelligent algorithm to predict capture high-dimensional space contained in the low-dimensional features. And for local dimensionality reduction of the different clustering algorithms, LLE algorithm in a single low-dimensional characterization of the global coordinate system, the sampling space, but it does not optimize the local minimum. Reconstructed by the local symmetry of the linear study of the application, LLE can describe the global structure of nonlinear manifolds, such as those who face data sets or text document collection)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

非线性规划中的最陡下降法、BFGS方法和共轭梯度法matlab源程序（3－拟牛顿BFGS方法）.m(Non-linear programming in the steepest descent method, BFGS and conjugate gradient method matlab source code (3- Quasi-Newton BFGS method). M)

ldpc编码，随机生成H矩阵，LLR-BP算法译码，有我详细的注解，非常详尽(ldpc coding, randomly generated H matrix, LLR-BP decoding algorithm, with my detailed notes, very detailed)

统计推断实验程序，用模拟退火算法寻找大量数据的最佳函数拟合(Statistical inference test procedure, using simulated annealing algorithm to find the best function fitting large amounts of data)

自适应信号处理中LMS算法和RLS算法的比较仿真(Adaptive signal processing in the LMS algorithm and RLS Algorithms Simulation)

用matlab实现jpeg2000编解码，包括小波变换、huffman编码等，适合初学者(Jpeg2000 codec, including wavelet transform, huffman coding using matlab for beginners)

matlab7.0教学。。。。。。。。。。。。。。。。。。(matlab7.0。。。。。。。。。)

LM滤波器组程序，用于图像纹理提取和处理，共有48个滤波器组成，在图像处理中应用(LM filter banks in matlab )