Matlab

实现两幅图像的配准，首先对图像做高斯低通滤波处理 ，然后计算互信息值，利用PWELL算法求出最优的参数，根据所得参数进行配准(To achieve the registration of two images, the first image to do the Gaussian low-pass filter, then calculate the mutual information value, use PWELL algorithm to determine the optimal parameters, in the light of registration parameters)

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一种新的EMD改进算法，可以结合其他的解调技术，比如1.5维谱，最小熵解卷积，奇异值差分谱，小波能量谱等。(EMD, a new improved algorithm can refer to.)

本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的 安全性。算法中,将灰度图像转换为二进制数据 流,置乱后扩频调制,隐藏在宿主DCT 系数量化值 中,提取时不需要宿主信号,实现水印信号的盲提 取。(This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantization DCT coefficients and then use the parity properties of 8-bit grayscale watermark embedding map, and through the PN sequence of encryption to ensure the security of the watermark. Algorithm, the gray image into binary data stream, scrambling after the spread spectrum modulation, hidden in the host DCT coefficient quantization values, the extraction does not require the host signal, the blind watermark extraction.)

说明：  这是个关于图像遗传算法分割的源程序，在matlab上实现(This is a genetic algorithm on the image segmentation of the source, to achieve in matlab)

本文针对基于经验模态分解ＥＭＤ的时空滤波器存在的固有模态函数分量中频率混叠交叉导致有用信号与噪声一起被滤除的问题结合小波在时间尺度两域表征信号局部特征的特性提出了一种基于能量估计实现ＥＭＤ分解层数确定(In this paper, based on empirical mode decomposition EMD temporal filter mode functions inherent component of cross-frequency aliasing and noise together lead to useful signal is filtered in the time scale of the problem combined with wavelet domain characterization of two local features of the signal characteristics of proposed achieve energy estimation based on EMD decomposition level determined)

16QAM 调制解调的matlab仿真及误码率的计算。(16QAM modulation and demodulation)

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4QAM调制的OFDM多径传输，对不同的信道估计算法的误码性能进行比较(OFDM modulation 4QAM multi-path transmission, for different channel estimation algorithm to compare the BER performance)

一种时频变换方法—Margenau-Hil分布，用于信号时频分析。(A time-frequency transformation method-Margenau-Hil distribution for the signal time-frequency analysis.)