SparseArray

该代码为用gabor变换算法提取图像的纹理特征，用matlab编写，可应用于基于纹理的图像检索系统。其中还包含一篇gabor变换相关的文献(The code for the transformation algorithm using gabor texture features extracted using matlab preparation, can be applied to image retrieval system based on texture)

有关三维点云数据的配准程序，使用matlab编写的(For three-dimensional point cloud data registration procedures, matlab prepared using)

Histogram of letters and pair of letters from a text file.

用欧拉角表示的飞行器姿态运动学方程在大角度时会出现奇异现象,而采用四元数来 表示,则可以避免这个问题。因此,飞行器运动学方程都采用四元数来表示。而飞行器的控 制规律都采用欧拉角来表示,且欧拉角表示姿态角比起四元数更加形象,更易于被人理解, 所以,在飞行器控制系统仿真设计的时候,需要四元数与欧拉角之间的转换。给定1 个欧拉 角,对应1 个四元数,因而欧拉角到四元数之间这种一一对应的关系使得欧拉角到四元数的 转换比较容易。但是,1 个四元数通常有1 个或者2 个欧拉角与之对应,它们之间不是一一 的对应关系,因而,四元数到欧拉角之间的转换比较困难。一般文献或者参考资料上的转换 仅仅适于欧拉角在- 90°～ + 90°之间的情况[1 ] 。文献[ 2 ,3 ]中给出了滚动轴在- 90°～ + 90° 之间变化,俯仰轴、偏航轴在- 180°～ + 180°之间变化的四元数到欧拉角的转换公式。本文 提出了滚动、俯仰和偏航3 个轴的欧拉角均在- 180°～ + 180°之间取值的全角度转换算法, 经过数字仿真证实,这个算法是完全正确的、而且很实用。(Euler angles of the spacecraft attitude kinematics equation at large angles appear strange phenomenon, and quaternion , You can avoid this problem. Therefore, the aircraft kinematic equations using quaternion to represent. Aircraft control The system of law Euler angles and Euler angles attitude angle than the the quaternion more image easier to be understood, Therefore, in the design of aircraft control system simulation, you need to convert between quaternions and Euler angles. Given an Euler Angle corresponding to a quaternion, which this one-to-one relationship between the Euler angles to quaternion makes Euler angles to quaternion Conversion is relatively easy. However, a quaternion usually have one or two corresponding Euler angles between them than eleven The correspondence relationship, therefore, the quaternion to convert between the Euler angle is relatively difficult. General literature or reference conversion Only suitable for Euler angles- 90 ° to+ 90 ° betwe)

这也是中东地区的一种格式，数据处理不难，但是功能多了就很难(This is the Middle East region a format, data processing is not difficult, but it functions more difficult)

地震波场的s变换,是进行S变换的主程序，将时间离散信号变换到S域(Seismic wave field s transformation, is the main S-transform, discrete time signal is transformed to the S domain)

数字图像处理中关于图像分割后跟踪的程序，可以是彩色图像。(Digital image processing, image segmentation and tracking program, you can color images.)

给出接收信号眼图及系统仿真误码率，实现了对10个数字音的识别，信号维数的估计，本科毕设要求参见标准测试模型，插值与拟合，解方程，数据分析，是小学期课程设计的题目，车牌识别定位程序的部分功能，考虑雨衰 阴影 和多径影响。 ( The received signal is given eye and BER simulation systems, To achieve the recognition of 10 digital sound, Signal dimension estimates, Undergraduate complete set requirements refer to the standard test models, Interpolation and fitting, solution of equations, data analysis, Is the topic of the elementary school stage curriculum design, Part of the license plate recognition locator feature, Consider shadow rain attenuation and multipath effect. )

matlab有限元分析工具箱，包含gui界面(Matlab finite element analysis toolbox, including the GUI interface)

这是利用小波分析进行信号处理的例程，具体内容因为已经很久没看了，所以不好说了(This is the use of wavelet analysis for signal processing routines, the specific content as it has been a long time not seen, so bad that)