Gray-Projection

用Matlab实现的数字音频水印嵌入与提取，包括水印提取，水印嵌入，前后对比等功能。(Using Matlab implementation of the digital audio watermark embedding and extraction, including the watermark extraction, the watermark embedding, and other functions before and after contrast.)

说明：  本代码是关于 MATLAB基础与提高 ,分第一章到第十一章(The code is about the basic and improvement of MATLAB)

说明：  若非奇异矩阵A能够分解为一个正交矩阵Q与非奇异上三角矩阵R的乘积，即： A=QR。则称其为A的QR分解。 实现QR分解的方法有很多种，包括Givens变换法，Householder变换法，Schemit正交化法。具体原理可以参考《矩阵论》（程云鹏，西工大出版）教材，这里仅给出三种实现QR分解的程序。(If nonsingular matrix A can be decomposed into a product of orthogonal matrix Q and nonsingular upper triangular matrix R, that is: A=QR. It is called QR decomposition of A. There are many methods to realize QR decomposition, including givens transformation, householder transformation, and scheme orthogonalization. The specific principle can refer to the teaching materials of matrix theory (Cheng Yunpeng, published by Xigong University). Here, only three kinds of QR decomposition procedures are given.)

用MATLAB实现灰色预测GM(1，1)模型(Gray prediction GM (1,1) model in MATLAB)

MATLAB code for optimal design of transonic wings. Optimize the wing parameters considering the better specific range. Master dissertation of Paulo Ferrucio

说明：  在Matlab软件上实现Mersenne Twister随机数的生成，并对结果进行仿真。(In the Matlab software to achieve Mersenne Twister random number generation, and the results are to be simulated.)

对块匹配中的全局搜索进行改进，只用搜索整幅图像的一半像素，与全局搜索（FS）相比，精度没有降低而时间减少了一半。(improved from full search, the matching time-consuming is nearly half of FS, but the matching accuracy is not reduced.)

Convolution code codigo de convolucion

小波神经网络诊断源程序,实现小波神经网络的matlab仿真(Source wavelet neural network diagnosis, wavelet neural network implementation of the matlab simulation)

ISODATA的matlab实现，迭代自组织数据分析算法(ISODATA MATLAB)