mathematica-course

自己设计的一种简单的理想频域低通滤波器，对图像进行低通滤波操作。(A simple self-designed ideal frequency domain low pass filter, low pass filter on the image operation.)

说明：  包括直接序列扩频CDMA的调制和解调函数(Including direct sequence spread spectrum CDMA modulation and demodulation function)

DCT给灰度图像加二值的水印信息，运行显示四幅图，分别是原图像，水印图像，加水印的图像和提取的水印图像(DCT to gray image plus two watermark values, run the show four maps are the original image, watermark image, add watermark image and extracted watermark image)

Identification of a muffle furnace

kaihua-zhang的Fast Compressive Tracking的Matlab实现代码，对理解文章很有帮助。(The code of the paper Fast Compressive Tracking,Kaihua Zhang.)

本实验先利用Mathematica求解非线性方程（组）,探索不动点、分形的性质.(In this study, the first use of Mathematica for solving nonlinear equations (group), explore the fixed point, fractal nature.)

说明：  查看要素（Feature）属性信息,同一图层可以选择多个要素(see feature attributes,the same layer can select many features)

This paper describes the impact of fuzzy parameter in FCM algorithm, and found 2.1 value as suitable one.

Matlab object serialization functions built with undocumented mex functions `mxSerialize` and `mxDeserialize`. The function can convert any ordinary matlab variable into uint8 array. These functions are unsupported and may change at any time without notice in the future Matlab release.

在PID控制中，微分信号的引入可改善系统的动态特性，但也易引起高频干扰。在误差扰动突变时尤其显出微分项的不足。若在控制算法中加入低通滤波器，则可使系统性能得到改善。(In PID control, the introduction of differential signal can improve the dynamic characteristics of the system, but it can also cause high-frequency interference. When error perturbations change abrupt, the deficiency of differential terms especially shows. If the low-pass filter is added to the control algorithm, the performance of the system can be improved.)