MR_PET_ronghe

PCA的步骤： 1 先将数据中心化； 2 求得的协方差矩阵； 3 求出协方差矩阵的特征值与特征向量； 4 将特征值与特征向量进行排序； 5 根据要降维的维数d’,求得要降维的投影方向； 6 求出降维后的数据； (PCA steps: 1 of the first data center 2 covariance matrix obtained 3 obtained covariance matrix eigenvalues and eigenvectors 4 eigenvalues and eigenvectors will be sorted 5 according to the dimension of dimension reduction d ' , seek to reduce the dimension projection direction 6, the data obtained after the dimensionality reduction )

image processing it will process the image

in this folder contains the import the picture and how to find the effects. how to read the image and how to show the images.

matlab教程，包括matlab语言基础，入门知识，非线性规划，二次规划等内容(matlab tutorial, including matlab language base, getting started, nonlinear programming, quadratic programming and other content)

实现加权最小二乘拟合，经典的系统辨识方法，很管用(Achieve a weighted least-squares fitting, classical system identification methods, it is useful)

二阶锁相环 matlab实现 QPSK BPSK(Implementation of QPSK BPSK with second-order PLL matlab)

说明：  讲述LTE技术创新与挑战的很有价值的参考资料，值得去读(About the challenges of LTE technology, innovation and valuable reference, it is worth to read)

坐标转换程序是用来将大地坐标转换为平面坐标的程序。(Coordinate conversion program is used to convert geodetic coordinates plane coordinate the program.)

基于反向学习的PSO，在图像阈值分割中的应用(Reverse learning PSO-based application in image segmentation threshold)

matlab实现的meanshift算法，本人使用效果不错(meanshift on matlab )