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This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. (This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. )

人工算法求解函数优化问题——智能计算大作业(Artificial Algorithm for Function Optimization- Great job on Intelligent Computing)

编写程序定义一个vector对象，其每个元素都是指向string类型的指针，读取该vector对象，输出每个string的内容及其相应的长度。(Write a program to define a vector object, which each element is a pointer pointing to the string type, reads the vector object, the output of each string and the corresponding length.)

说明：  使用步频信号生成距离像，包含变量频率步数，频率差，散射体数量，距离元，散射体移动速度，来生成散射体的距离像。(Step-frequency signal generated using the range image that contains the variable frequency step, frequency difference, the number of scattering from the element, scattering body speed, to generate the scattering of Range.)

vq矢量量化，对说话人进行识别，内置有语音样本，识别率高达90 。对语音信号进行读取，预处理，特征参数提取，向量量，训练，对比识别。(vq vector quantization for speaker identification, built-in voice samples, the recognition rate of 90 . Read the speech signal, preprocessing, feature extraction, the amount of vector, training, recognition comparison.)

脊线提取是信号处理很重要的一个项内容 这里用MATLAB语言实现了脊线的提取 (Ridge extraction is a very important signal processing items here in MATLAB language to implement the extraction ridge)

Descriptor DAISY for Matlab in Windows

在仿真中通常利用3GPP中的scm信道来模拟MIMO信道，各个scm信道是独立产生，相互之间独立，即相关系数为零。(Often used in the simulation of the 3 GPP SCM channel to simulate the MIMO channel, the SCM channel is independent, independent with each other, the correlation coefficient is zero.)

Optical Mammography Image Enhancment

Ergodic Capacity of MIMO Triply Selective Rayleigh Fading Channels