DCT

基于DCT变换的JPEG图像压缩的matlab代码(The matlab code of JPEG image compression based on DCT transform)

求解线性矩阵不等式简单方便--与LMI工具箱相比(Solving linear matrix inequalities is simple and convenient- as compared with the LMI toolbox)

呃，就是用赫夫曼算法写的压缩解压程序。非常粗糙，只能压缩英文文章。因为里面的字符概率是基于自然语言的，源代码之类的没法压缩。而且会抛弃最后几个字母，嘿嘿。为了交作业，没有好好写。改一下下应该能挺好的。压缩比能到60 吧(Uh, is to use Huffman compression decompression algorithm written procedures. Very rough, only compress English articles. Because there is the probability of characters based on natural language, the source code and the like can not compressed. And will abandon the last few letters, hehe. For homework, not properly written. The following should be able to change it quite good. Compression ratio to 60 of it can be)

ffmpeg 是一个开源、功能强大的多媒体处理软件，可以实现对音频流、视频流的录制和转换。(ffmpeg is an open source, powerful multimedia processing software, which enables audio streaming, video streaming recording and conversion.)

对图像进行斑点噪声的添加，用方程f=f+n*f将乘性噪音添加到图像f上，其中n是均值为零，方差为var的均匀分布的随机噪声。(Image speckle noise addition, the equation f = f+ N* f will be added to the multiplicative noise on the image f, in which n is zero mean, variance var of the uniform distribution for the random noise.)

利用霍夫曼编码算法对数字图像进行压缩及解压缩处理，解压出来的图像与源图像几乎完全一致，峰值信噪比为无穷大(The use of Huffman coding algorithm for digital image compression and decompression processing, extracting images from the source image is almost exactly the same infinite PSNR)

说明：  calic压缩和解压缩算法的C++代码....(This is a commonly used CALIC codec C language.)

ansys 分析 圆环的受力:一个的圆环,受一对过直径的集中 应力, 作用下发生1mm的压缩量（如图所示）。已知材料的弹性模量E＝2.0GPa，泊松比为0.3。用平面应力单元PLANE82分析圆环内部的应力分布情况(ansys analysis by the Circle : A Circle and the one across the diameter of the concentrated stress, occurred under 1 mm compression volume (as shown). Known material elastic modulus E = 2.0GPa, Poisson's ratio of 0.3. Plane stress analysis modules PLANE82 Circle internal distribution of the stress)

说明：  自适应信号处理的理论和技术经过40多年的发展和完善，已逐渐成为人们常用的语音去噪技术．并通过实例介绍了基于Matlab的RLS自适应语音噪声对消系统的设计与实现．(After more than 40 years of development and improvement, the theory and technology of adaptive signal processing have gradually become a common speech denoising technology. The design and implementation of RLS adaptive speech noise cancellation system based on Matlab are introduced through an exampl)

比较全面的无损压缩算法集合，编译通过，可以运行(More comprehensive collection of lossless compression algorithm, the compiler is passed, can run)