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Matlab讲义高级第4章，大家分享一下(Matlab senior notes, Chapter 4, we share)

P0301：数字图像矩阵数据的显示及其傅立叶变换 P0302：二维离散余弦变换的图像压缩 P0303：采用灰度变换的方法增强图像的对比度 P0304：直方图均匀化 P0305：模拟图像受高斯白噪声和椒盐噪声的影响 P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波 P0308：图像的自适应魏纳滤波 P0309：运用5种不同的梯度增强法进行图像锐化 P0310：图像的高通滤波和掩模处理 P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理 P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理(P0301: digital image data display matrix and its Fourier transform P0302: Two-dimensional discrete cosine transform image compression P0303: gray-scale transformation of the methods used to enhance image contrast P0304: Histogram of homogenization P0305: simulated images by the Gaussian white noise and salt and pepper noise P0306: A two-dimensional median filter function medfilt2 by the salt and pepper noise to the image filtering P0307: the use of MATLAB function in the noise interference of filter2 images mean filter P0308: Wehner adaptive image filtering P0309: the use of five kinds of different gradient enhanced image sharpening method P0310: the image of the high-pass filter and mask to deal with P0311: the use of Butterworth (Butterworth) low pass filter on the subject of the image noise smoothing P0312: the use of Butterworth (Butterworth) high-pass filter for sharpening images)

matlab教程，有些还是很有用的，看看吧(matlab tutorials, some are very useful to see it)

对于一段有杂音的音频信号，用过多种方式去除，建立多种经典滤波器，并比较优劣。(For a period of noise audio signal, used a variety of ways to remove the establishment of a variety of classic filter, and compare the pros and cons. )

说明：  各种数据处理的基本算法，包括最小二乘，和各种算法与最小二乘的算法融合(Basic Algorithms for Various Data)

此为利用小波来进行去噪处理的几种程序举例，期中包括wnoise 函数测试去噪、图像噪声处理、图像用户界面（GUI）的压缩和去噪声处理三方面。(This is to use wavelet denoising examples of several programs, including wnoise function test period denoising, image noise processing, graphical user interface (GUI) of the compression and to deal with three aspects of noise.)

几篇关于dv-hop定位算法改进的比较新的文章，重点在平均每跳距离上改进(Several dv-hop localization algorithm improved relatively new articles about the focus on the improvement of the average distance per hop)

the phrase "the number value for x" has a technical meaning defined in section 8.5.

关于Jakes模型的两篇文章，对初学者有帮助(Two articles about Jakes Model)

学习别人做的 很简请前辈看看，指教，谢谢大家！(学习被人做的 很简请前辈看看，指教，谢谢大家！)