程序 (1)

灰度共生矩阵提取特征值，最近邻算法，进行纹理图像分类。creat_apprentissage用来训练样本，cooccurence是灰度共生矩阵提取特征值，knn是进行k最近邻算法，classif是纹理图像分类(coocurence matrix，using K nearest neighbor to classify textures images.)

％File: c9_estimatepi.m ％有5个pi的估计，每一个都是基于500次重复随机试验，所得的pi的五个估计值用以下向量表示 ％pi的估计值=[3.0960 3.0720 2.9920 3.1600 3.0480] ％如果对5个结果进平均，则pi的估计值=3.0736,这样的结果等价于2500次的试验结果。( File: c9_estimatepi.m have 5 pi estimates are based on a randomized trial to repeat 500 times the income of the five estimated value of pi with the following vector, said the estimated value of pi = [3.0960 3.0720 2.9920 3.1600 3.0480] if the results into an average of 5, then the estimated value of pi = 3.0736, so the result is equivalent to 2500 times the test results.)

Gauss Elimination Algorithm is used to solve linear equations in the form Ax=B, find rank of matrix and to find inverse of matrixes. The program is done in matlab platform.

画圆，，复杂背景下，圆心的中心定位，使用的是霍夫变换(Circle, complex background, the center of the circle' s center position, using a Hough transform)

用Ziegler--Nichols整定公式来求P,PI,PID的个参数，其中Gc是校正器的传递函数,kp为比例系数， Ti为积分时间常数，Td为微分时间常数，输入参量vars为带迟滞--惯性环节模型的KT τ(With Ziegler- Nichols tuning formula to seek P, PI, PID' s parameters, which Gc is the corrector transfer function, kp is proportional coefficient, Ti the integral time constant, Td for the differential time constant, input parameters vars as with hysteresis- inertia model of the KT τ)

matlab code for water fall cognitive radio

说明：  matlab,对解决学习中遇到的实际问题会有很大的帮助(Matlab, learning to solve practical problems encountered in will be a big help)

说明：  这是图像加密的源代码。可以下载分享，解密源代码，下次上传(This is the image encryption source code. Download share, decryption source code, the next upload)

关于双缝干涉条纹以及条纹光强度的研究 内含公式推导程序等(Research on the Influence Factors of Young s Double-Slit Interference Experiment)

说明：  《MATLAB 7.0从入门到精通》一书的配套程序——第4章的程序。(&quot MATLAB 7.0 from the entry to the master,&quot a book supporting the program- Chapter 4 of the program.)