BPM_free_space

这是一个粒子群算法求解TSP问题的算法，用matlab来实现。(This is a PSO algorithm for solving TSP problems, using matlab to achieve.)

概率向量为p的哈夫曼码生成器，返回哈夫曼码矩阵h和一个概率向量为p的信源的码字长度(Probability vector p of the Huffman code generator, return to Huffman code matrix h and a probability vector p of the source of the code length)

说明：  实现伪彩色增强，包括两种不同的算法。一种是线性变化传递函数，一种是非线性变化传递函数。(Achieve pseudo-color enhancement, including the two different algorithms. One is the linear transfer function, a nonlinear transfer function changes.)

Output channels during simulation must be updated. Use this functions to do it

包含Jacobi和Seidel两种迭代法，用于求解线性方程，计算简单，收敛快(Contains two kinds of Jacobi and Seidel iterative method for solving linear equations, computing simple, fast convergence)

用matlab 实现离散时间傅里叶变换的例程，方便初接触者使用。这是我dsp课的大作业(Using matlab discrete-time Fourier transform routines to facilitate early contact to use. This is my big job dsp lesson)

电机模型，能够较好的实现电机仿真。电机模型，能够较好的实现电机仿真。电机模型，能够较好的实现电机仿真(Motor model, the motor can achieve a better simulation. Motor model, the motor can achieve a better simulation. Motor model, the motor can achieve a better simulation)

改变电枢磁通调节直流电机的转速，在simulink中实(The magnetic speed regulating DC motor simulation source code)

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.

按照用户输入的压缩率，完成对灰度图的压缩(Compression ratio in accordance with user input to complete the compression of grayscale)