kalman

runlength coding with zigzag. to run it call zigzag.m

清华大学张旭东老师《现代信号处理》课第二次大作业代码。高效正确地实现LMS算法。( This is an efficient and correct implementation of the LMS algorithm.This code is especialy for the project of modern signal processing ,which is tought by Zhang Xudong in Tsinghua University. )

说明：  计算任意矩阵函数的matlab程序，比较简单(Calculation of arbitrary matrix function matlab procedure is relatively simple)

this is saple program for file system implementtion in purebasic

利用matlab 开发的另一遗传算法工具箱，运行速度快，可选功能多，是一个相当不错的工具箱。(Another development of the use of matlab genetic algorithm toolbox, running fast, many optional features, are a fairly good toolbox.)

This function finds the forward kinematics of the RA-01 Robotic Arm made by Images SI, Inc. The RA-01 has five degrees of freedom. This funciton outputs two vectors. The first vector is the forward kinematics of the central position of the end effector, while the second vector is the forward kinematics of a finger of the end effector (a gripper). Note that it does not matter which finger it is as the position of one finger is simply the negative of the other hence, the value gotten for the y-direction is actually "plus or minus y".

研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散 余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的 K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角 阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这 反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特 性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。 虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。 (Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect. Although from related to the performance of the sense, DCT is a kind o)

进行T分布检验，专门用于极值分析，如果有极值分析的需要可以进一步联系我！(T distribution for testing, specifically for the extreme value analysis, if there are extreme needs analysis can further contact me!)

MATLAB实现对录音信号的滤波，包括低通，高通和带通，以及时域和频域分析(MATLAB realize filtering of audio signals, including low-pass, high pass and band-pass, as well as the time domain and frequency domain analysis)

模拟二维平面干涉图，I(x,y,t)=a(x,y)+b(x,y)*cos(ph(x,y)+w*t)(Simulation of two-dimensional interference pattern)