eigen

图像JPEG系数域，Markov 900维 特征提取，Matlab 下，C语言实现(Image JPEG coefficient domain, Markov 900-dimensional feature extraction, Matlab under, C language)

说明：  做自适应去噪时用到的三篇很有价值的文献，，并有实现程序，(Adaptive denoising used to do three valuable literature, and have the program)

圆卷积与线卷积在FIR中的实现，通过程序还开深刻理解两者间的差别和各自优劣。 1.圆卷积用在被截出的某段数据中，此时，长度应该定为和输入数据长度一致（一般输入数据大于hn的数），这时圆卷积结果相当于某段被截断出来的数据以非截断的方式经过滤波而得出的结果；线卷积用在各自独立的，离散的数据中，若截断数据也用线性卷积来计算，那么就相当与这部分数据是与源数据是独立的， 得出的结果时域两端会变长，但频谱基本上一样的。差别可以想象。 2.注意圆卷积最开始的输入数据的次序，构造矩阵时要注意。(Circular convolution with the line convolution in the FIR implementation, the program also opened a deep understanding of the difference between the two and their respective pros and cons. A circular convolution with cut out a certain period of data At this point, the length should be set for the same length as the input data (typically input data greater than hn the number), when the circular convolution is equivalent to a certain the results of the truncated data to the non-truncated filtered line convolution with a separate, discrete data, truncated data with a linear convolution calculation, then the equivalent of this part of the data is independent of the source data, the results of both ends of the time domain becomes long, but the spectrum is basically the same. The difference can imagine. Note that the order of the circular convolution of the input data to construct matrix.)

motion estimation it estimates the motion vectors of hexagon search algorithm and estimates its direction

提取大量txt文本中的相同序号的数据，保存至数组，作为纵坐标画出图形。(Txt text to extract a large number of the same data, save it to an array, as ordinate drawn graphics.)

这是一个基于卡尔曼滤波的GPS跟踪微弱信号的文章！(This is a Kalman filter-based weak signal tracking GPS article!)

this file is matpower software that is a power engineering software.

fft2 and dct algorithm in image compression JPEG

清华大学2013年针对稀疏表示的一个讲座，请的是稀疏表示的创始人。其中为讲座的讲义。(Tsinghua University in 2013 for the sparse representation of a lecture, please sparse representation is the founder. Where is the lecture handouts.)

創建 JPEG quantization table(JPEG quantization table)