QPSK

surf 特征提取 点特征 尺度不变性 黑森林矩阵(surf feature extraction)

i write code for image watermarking in matlab

说明：  SUI信道的仿真代码，很不错。有兴趣的人可以看看，1-6都有(SUI CHANNEL。very good，)

几个线性拟合的matlab程序,用到了对数，一次，二次，( several linefitng programs,matlab )

simplex method for matlab

需将图形文件复制到D盘根目录，或修改程序中的相关文件的路径。 计算机运行可能会出现这样的警告：Warning: Function call WAVEDEC2 invokes inexact match F:Matlab oolboxwaveletwaveletwavedec2.m. > In Wnn0802 at 18 无妨，没关系的，不影响运算结果。(Need to copy files to the D graphics root directory, or modify the program in the path of the relevant documents. Computer running such a warning might appear: Warning: Function call WAVEDEC2 invokes inexact match F: Matlab toolbox wavelet wavelet wavedec2.m> In Wnn0802 at 18 anyway, it does not matter, does not affect the result of the operation.)

2dpca的matlab源代码,很好用的一个算法，大家可以来试试啊(2dpca the matlab source code, good use of an algorithm, we can to try ah)

creates a list of all the subdirectories in a specific folder

在matlab下，实现太阳高度角、日期计算。(In matlab, the realization of solar altitude angle, the date of calculation.)

It enables users to input a time-series of 2-D velocity field data (e.g., DPIV measurements or CFD calculations) and compute the corresponding finite-time Lyapunov exponent (FTLE) fields, which Lagrangian Coherent Structures (LCS) suchas vortices and fluid transport barriers can be identified.