MATLABDLL

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. )

小波包提取特征值。 matlab 往复式压缩机(Wavelet packet eigenvalue extraction. reciprocating compressor matlab)

This code is a real seismic data in segy format.

renix文件的读取，以及一些相关的资料！(renix document read, and some relevant information!)

高斯迭代算法基本程序，用于求解矩阵方程，对初学者很有帮助(Gauss iterative algorithm for solving the matrix equation, useful for beginners)

关于调制信号的分形维数的算法，该函数用来计算ASK信号分形信息维数，可以以此类推到其他的调制信号(Fractal Dimension Algorithm modulated signal, the function used to calculate the ASK signal fractal information dimension, can so to other modulation signal)

采用matlab编写的数值方法中的案例，标号为书中的例题(Numerical methods using Matlab prepared case, the label for the examples in the book)

本matlab程序用惩罚函数法求解多元模型的最小值（给出初始点和精度要求条件）。(The matlab program for solving the minimum multivariate model with penalty function method (given initial point and precision conditions).)

说明：  这个压缩包里含有的代码是采用蚁群算法解决路径规划问题(Using Ant Colony Algorithm to Solve Path Planning Problem)

说明：  基于分形理论谱峰检测研究，分形算法。。。。。。。。。。。。。。。。(aaaaaaaaaaaaaaaaaaaaaaa)