matlab_statistic

BSDS300-images for image processing

对瞬时特征提取过程进行了描述，具有一定的参考价值(The instantaneous feature extraction process is described, with some reference value)

人脸识别中的matlab算法，人脸前期处理，希望对大家有用(of Matlab face recognition algorithm, face pre-processing, it may be useful to hope)

批量读取降雨数据nc文件中的网格数据，基于广义极值分布进行降雨极值预估(Batch files read nc rainfall data grid data, based on estimates of rainfall extremes GEV)

阵列信号处理_空间谱估计原理的一些基本算法——MusicEspritMp(Array signal processing _ the principle of spatial spectrum estimation of some of the basic algorithm- MusicEspritMp)

寻找测试样本的最近邻，可以有效的用于用于模式识别，信号处理(This is a small but efficient tool to perform K-nearest neighbor search, which has wide Science and Engineering applications, such as pattern recognition, data mining and signal processing. The code was initially implemented through vectorization. After discussions with John D Errico, I realized that my algorithm will suffer numerical accurancy problem for data with large values. Then, after trying several approaches, I found simple loops with JIT acceleration is the most efficient solution. Now, the performance of the code is comparable with kd-tree even the latter is coded in a mex file. The code is very simple, hence is also suitable for beginner to learn knn search.)

说明：  截止频率在0.3Hz的巴特沃斯低通滤波器，采用二阶级联进行编程。(In the 0.3Hz cutoff frequency of Butterworth low-pass filter, used to program the second class together.)

部分院校的数字信号处理的matlab的实验(Some institutions of digital signal processing matlab experiment)

说明：  四自由度船舶运动模型,利用该控制器船舶能够快速、精确地跟踪期望直线和曲线 航迹， 控制器具有较强的鲁棒性(four degrees freedom ship motion)

a matlab program that deals with k-means algorithm to cluster the data points and build codebook.