toolbox_nlmeans

摘要 该文主要考虑利用图像噪声再生技术来提取图像细节 其思想是利用被滤除的噪声信号进行回收再利用 通过对噪声信号和初步去噪信号进行小波变换 比较它们的小波系数 当噪声信号的小波系数达到一定的阈值时 将噪声信号的小波系数保留叠加至初步去噪信号的小波系数 然后利用传统的软阈值去噪的方法来进行图像的去噪 从而达到既能够去除噪声 又能保留图像细节的目的 实验证明 该方法较传统的方法在去噪和细节保持上有改进(Abstract In this paper, consider using images to extract the noise regeneration of its ideological image detail is the use of the noise signal was filtered to recycle through the noise signal and the initial wavelet transform de-noising signal comparison of their wavelet coefficients of the wavelet signal when the noise coefficient reaches a certain threshold will be the noise signal superimposed to the wavelet coefficients to retain the initial de-noising signal wavelet coefficients and then using the traditional soft-threshold denoising approach to image denoising in order to achieve the removal of noise can not only be able to retain The purpose of image detail that the methods of the experiment a more traditional approach to denoising and detail in there to keep improving)

认知无线电主用户信号为BPSK信号在不同信噪比下的检测概率和虚警概率(Cognitive radio primary user signal is BPSK signals in different SNR detection probability and false alarm probability)

多载波调试的正交频分复用技术 包括正交振幅键控技术 四相相移键控信号等其它技术 其误码率在千分之几数量级 非常实用(Multi-carrier debugging orthogonal frequency division multiplexing quadrature amplitude shift keying technology quadrature phase shift keying signal other technologies, such as the bit error rate is very useful in a few thousandths of magnitude)

如何生成mif文件 用于导入fpga的RAM存储中(How to generate mif file for importing RAM memory in fpga)

reynolds pressure distribution matlab codes

用pca 和 lda 实现数据的降维,加快机器的特征提取的速度。(Pca and lda of data with dimension reduction, feature extraction to speed up the speed of the machine.)

设计一个切比雪夫滤波器，要求通带截止频率 ，通带最大衰减 ，阻带截止频率 ，阻带最小衰减 。要求绘出滤波器的幅频特性曲线。(Design a Chebyshev filter, the passband cutoff frequency required, the maximum passband attenuation, stopband cutoff frequency, stopband minimum attenuation. Requirements of the filter amplitude-frequency characteristic plotted curve.)

精通MATLAB计算科学书源代码，原书正版CD第三张源代码(Proficient in computer science book MATLAB source code, the third original CD to the book source code)

金字塔算法的实现，这个是例程，直接运行没错误(sift Pyramid)

三相电路的svpwm,仿真实现，很难找到的给做仿真的兄弟(Three-phase circuits svpwm, simulation, it is difficult to find the brothers to do simulation)