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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. )

平均标准偏差，一个计算用的Matlab小程序，希望大家喜欢(The average standard deviation, a calculation using a small Matlab program, I hope everyone likes)

指纹识别源代码，用matlab编程实现的指纹识别源代码，简单易懂，非常实用(Using Guide:matlab 6.5 version (or over version) + image proceesing tools The 1st step, change the files directory as the matlab current directory The 2nd step, in the "command" window, input "GUI", then "Enter" The 3rd step, GUI will be shown. )

matlab檔案，用於計算定位成功率，輸入nmea檔案，自動計算NMEA定位的成功率(Calculate the fix yield rate)

说明：  MATLAB在信号处理中的应用 3 傅里叶(Fourier)变换 IIR数字滤波器的设计方法 FIR数字滤波器设计(MATLAB in signal processing of the application of three Fourier (Fourier) transform the design method of IIR digital filter FIR digital filter design)

VSB调制模型，提倡共享。谢谢大家支持。(VSB modulation model, promoting sharing. Thank you for support. Thank you, Thank you, thank)

上传Matlab源代码程序，希望对下载的人有所帮助(Upload Matlab source code procedures in the hope that the right people download help)

This folder contains several codes for energy detection and match filter.

图像融合算法，快速准确，有独特的特征点连线(Image fusion algorithm, fast and accurate, with a unique feature point connection)

这个程序详细说明了怎么用极坐标画天线方向图(This procedure specifies how to use the antenna pattern in polar coordinates Videos)