z1test

This a ddk filter sample for keyboard

程序为粒子滤波器跟踪算法的演示程序，粒子滤波器算法适用于非线性非高斯情况下的跟踪估计。本程序为pf专家程序，演示pf跟踪的核心思想，与大家共享。(procedures for tracking particle filter algorithm Demonstration Program, particle filter algorithm applicable to the non-linear Gaussian case tracking estimates. The procedures for pf experts procedures, presentations pf tracking core ideas and share.)

计算两个离散变量x和y的条件熵z = H（x | y）。 with Input：两个相同长度的整数向量 有益于学习(Compute conditional entropy z=H(x|y) of two discrete variables x and y. with Input: of two integer vector of the same length good for learning)

动态倒计时牌，目标时间（即倒计时截至时间）的年、月、日、时、分、秒以及倒计时主题可以根据不同主题由用户动态设定，并且在此设定基础上在屏幕上显示距离相关主题到达之时还有n年、n天和n秒（其中的三个n各不相同，且随着程序运行动态变化），以北京时间作为主要显示板块，同时显示纽约、伦敦时间的附加倒计时板块。程序中除了刚运行时给出一次当前标准时间值（或读出系统当前时间）外，在程序运行期间应在自己独立的用户时钟控制下，而不受外界输入影响和系统时间的束缚。(Dynamic countdown, the target time (ie, as the countdown time) of the year, month, day, hour, minute, second, and the countdown theme can set different themes by the users, and in this setting is displayed on the screen on the basis of distance-related There are n the theme of the time of arrival, n day n seconds (one of the three different n, and with the dynamic program runs), to Beijing as the main display section, also shows New York, London time, the additional countdown Plate. In addition to just run the program once the current standard time value is given (or read the current system time), but during the program should be independent in their own under the control of the user clock, and free from outside influence and input system time constraints. )

基于logistic映射的混沌图像置乱加密算法，并对其进行了matlab仿真。(Chaotic logistic map image set chaos encryption algorithm, and its a matlab simulation.)

有关matlab的数值计算求导方法，对以后数值计算的求导很实用。(About matlab numerical calculation method of derivation, for subsequent numerical derivation is very practical.)

LDPC码与TURBO码的matlab仿真程序(The MATLAB simulation program of LDPC code and TURBO code)

matlab 遗传算法工具箱（有说明文档）(matlab genetic algorithm toolbox (with documentation))

钱伯斯——三点迭代公式，同抛物线法一样可以求方程的根。(Chambers- 3:00 iteration formula, with the parabola method can still seek the root of equations.)

border segmentation for CBIR system using matlab