yuyinxuebo

使用matlab工具解洛伦兹方程的runge-kutta方法(matlab solution of Lorenz equations)

像素的选择，并且最终获得HSV颜色空间，用MATLAB编程(select Pixels And GetHSV)

本章将介绍 Hitech-PICC 编译器的一些基本概念，由于篇幅所限将不涉及C 语言的标准 语法和基础知识介绍，因为在这些方面都有大量的书籍可以参考。重点突出针对PIC 单片 机的特点而所需要特别注意的地方。(This chapter will introduce the Hitech-PICC compiler of some basic concepts, lack of space will not be involved in the standard C language to introduce basic knowledge of grammar and because in these areas can have a large number of reference books. Focused features for the PIC MCU and the need of special attention.)

说明：  在MATLAB上所使用的PCA程序，主要應用於過濾相對較不重要的特徵值(dimension)，例如在三度空間的某些點具有(x,y,z)值，因為這些點有共同的一個持徵，就是z值相對於x,y值來得小很多(不明顯)，所以就以X,Y軸來表示這些點。此時就達成去除掉z的特徵值(dimension)。 (MATLAB used in the PCA procedure, mainly used in filtering relatively unimportant eigenvalue (dimension), for example, in some points with three-dimensional (x, y, z) values, because these points have a common one sign holders, that is, z values compared with the x, y values much smaller than (not obvious), so on to X, Y axis to express these points. Reached at this time to get rid of z eigenvalues (dimension).)

均匀线阵列数字波束形成matlaab程序，与大家一起分享 (Uniform linear array digital beamforming matlaab procedures, and shared with)

matlab编程 通过设定参数，画出相移布拉格光栅反射谱及色散，反射谱和时延的图象(matlab programming by setting parameters, draw the phase shift image Bragg grating reflection spectrum and dispersion, reflection spectrum and delay)

坐标轮换法求解多维约束问题极值，坐标轮换法求解多维约束问题极值(Coordinate Rotation Method Constrained extremum)

功率谱估计是利用有限长的数据估计信号的功率谱，广泛应用于各个领域。功率谱估计主要分为经典谱估计与现代谱估计。常用的经典谱估计方法有周期图法，相关法，周期图的改进法，常用的现代谱估计方法有最大熵谱估计，AR模型，MA模型，ARMA模型。经典谱估计适用于长序列的信号，其主要缺陷是描述功率谱波动的数字特征方差性能差，频率分辨率低，现代谱估计适用于短序列的信号，旨在改善谱估计的分辨率，并将其应用于实际地震资料的谱分析。 (Power spectrum estimation is the use of a finite length data to estimate the power spectrum of the signal, widely used in various fields. Power spectrum estimation is divided into classic and modern spectral estimation spectral estimation. Commonly used methods of classical periodogram spectrum estimation method, the relevant law, the cycle graph Improvement Act, commonly used in modern spectral estimation methods have maximum entropy spectral estimation, AR model, MA model, ARMA model. Classical spectral estimation applied to signal a long sequence, its main drawback is the fluctuation power spectrum describing digital signature variance performance is poor, the frequency resolution is low, modern spectral estimation applied to signal short sequences designed to improve spectral estimation resolution, and The analysis applied to real seismic data spectrum.)

用于计算相机外参数，即CCD像素坐标与三维世界坐标的对应关系，输入参数是世界坐标标定点对，输出外参数矩阵(Outside the parameters used to calculate the camera, that the correspondence between CCD pixel coordinates and the coordinates of the three-dimensional world, the world coordinate input parameter calibration point right, outside the parameters of the output matrix)

The program model plane source as the model demonstration of 3D, easy for beginners to learn and exchange