negativeimage

一个matlab是一个数学计算软件的，时间到了(A matlab is a mathematical calculation software, time is running out)

find the ROI of the image and removes the color outside the ROI

1) Pls note that the input sequence shall be a power of 4. 2) Output bits are reversed in Quaternary System. MATLAB release MATLAB 7.5 (R2007b)

说明：  MTALAB源代码，关于数字匹配，可以识别图片上的数字和字母，代码简单，可提供学习。(MTALAB source code, on the number of matches, can identify numbers and letters on the picture, the code is simple, to provide learning.)

激光散斑的模拟仿真。包括圆复高斯非成像散斑，圆复高斯成像散斑，基于copula联合分布函数的相关序列散斑。给出了GUI。可以实现散斑图，散斑强度分布图，相关曲线图。(the simulation of laser speckle the copula-based simulation of laser speckle)

波束形成相关程序，包括窄带常规波束形成及MVDR波束形成的波束图和方位估计仿真，还有宽带小数时延常规波束形成器的仿真。本程序主要基于水声背景，模型是最简单的线列阵，但对其他阵型只要修改至相应方向相应向量即可，对雷达和语音阵列信号处理修改相应波速频率即可。(Beam forming procedures, including conventional narrowband beamforming and beamforming MVDR beam pattern and orientation estimation simulation, as well as conventional broadband fractional delay beamformer simulation. This program is mainly based on the background the sound of water, the model is the simplest linear array, but as long as the formation of other modifications to the corresponding direction vector corresponding to, radar array signal processing and voice modify the velocity frequency.)

一篇经典的mimo信道模型及其matlab源程序，对mimo及信道模型学习很有好处。(A classical MIMO channel model and its matlab source of MIMO channel model and a very good learning.)

matlab for c programeers

Passive location algorithm of AML, partial implementation

frequency expander. Matlab code for expander.When x is a vector, this function adds L-1 after each element of x. When x is a matrix, each column of it treated as vector and expanded L fold. SQUARE-ROOT RAISED-COSINE PULSE: h=sr_cos_p(N,L,alpha) This function generates a square-root raised-cosine pulse of length N+1. There are L samples per symbol period. alpha is the roll-off factor.