spreadingBySir

小波变换(Wavelet)实现数字零水印源代码(Simple wavelet transform (Wavelet) digital Watermarking source code)

说明：  对一个非线性的滤波器设计进行优化，使得设计出的滤波器与给定指标最接近且要求优化变量取离散值得优化设计问题(Of a non-linear filter design is optimized, making the design of the filter and to set targets and optimize the variable closest to the requirements and obtain the optimal design of discrete worth)

simulation plan de phase 1

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. )

双DBR反射镜组成的微腔模式及透射光谱、反射光谱计算(Double DBR mirror consisting of micro-resonator modes and transmission spectra, reflectance spectra)

OFDM Rayleigh simulation

matlab矩阵操作大全，还包括一些特殊矩阵的生成(matlab matrix operations Daquan, including the formation of some special matrices)

一种有效地能量叠加方法，应用在matlab环境下，对地震信号处理十分有效( kind of effective energy superposition method, the application in the matlab environment, the seismic signal processing is very effective )

自动控制原理PPT大学教程，是华北电力大学的(Automatic control theory PPT university course, is North China Electric Power University)

游戏“flappy bird”，matlab代码。(Game " flappy bird" , matlab code.)