Proof

讲述了有关matlab的函数，是很有帮助的。(Tells about the matlab function is helpful.)

用matalb实现了参数可变的极零抵消滤波器还陷波滤波器输入参数既可以应用(Matalb achieved with an extremely variable parameter is also zero-offset filter notch filter can be applied to both the input parameters)

离散傅里叶变换时实现信号频域分析的第一步，用matlab实现对离散傅里叶变换的描述。(Discrete Fourier transform when the signal frequency domain analysis to achieve the first step, using matlab to achieve a description of discrete Fourier transform.)

to encode an LDPC code

对给定的函数进行最速下降法求最低点的例子(a example for deepest method)

Camera parameter estimation (also the method is presented in Trucco).

说明：  使用hough变换检测圆，程序说明详细，可以检测同心圆(Using the hough transform to detect circles, detailed description of the procedures, can detect the concentric circles)

蜂窝网TDOA定位算法的一种Fang算法，我自己测试过的。(Cellular TDOA algorithm of a Fang algorithm, I tested.)

本程序是用简化梯度法进行电力系统最优潮流计算。(This procedure is the calculation of the optimal power flow of power system with simplified gradient method.)

This paper presents a novel algorithm of hiding secret messages by applying mathematical lemmas and information theory. The proposed algorithm can hide more information with acceptable embedded rate and achieves requirements of information hiding algorithm and simply information extracting. The main idea is applying modern algebra to solve the information hiding problem in multimedia. In order to prevent some attacks on stganography, hidden initial bits of image data pixels are chosen randomly. The extracted information are achieved without the reference of the original image and extracted keys. The experiment results show that our approach is effective and reliable.