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Face tracking code. Tracks face in video focusing skin detection

PDF aobut diferent book in electrical research for electrical student nd teacher

说明：  流形学习非线性降维的经典算法Isomap(isomap algorithm with the data and the paper in 2000)

种子粒子群算法，对粒子群的参数进行了改进，很有效。(Seed particle swarm algorithm, the parameters of PSO has been improved, very effective.)

自己编的，利用MATLAB进行DPSK和PSK编码，可用于数字通信的课程学习中。(Own, and the use of MATLAB for DPSK and PSK encoding, digital communication can be used to study in the curriculum.)

小电流开关二极管1N4148的详细介绍，包括工作特性和参数(Low current switching diodes 1N4148 in detail, including the operating characteristics and parameters)

This file gets the satellite coordinates in the orbital plane and computes its coordinates in the cartezian system

列出求素数的程序，所谓素数就是只能被它的自身和1除尽的数(require a prime number)

说明：  该函数利用高斯频谱产生一维的高斯随机起伏地表。(RSGENG generates 1D Gaussian random rough surfaces with Gaussian Spectrum.)

霍夫曼编码的具体方法：先按出现的概率大小排队，把两个最小的概率相加，作为新的概率 和剩余的概率重新排队，再把最小的两个概率相加，再重新排队，直到最后变成1。每次相 加时都将“0”和“1”赋与相加的两个概率，读出时由该符号开始一直走到最后的“1”， 将路线上所遇到的“0”和“1”按最低位到最高位的顺序排好，就是该符号的霍夫曼编码。(Specific methods Huffman coding: the probability of emergence of the size press line, the two smallest sum probability, as a new probability and the probability of re-queue the remaining, then the minimum of two probabilities are added, and then re-queue, until finally become one. Each time the sum will be 0 and 1 Fu added two probabilities, when read by the symbol has come to begin the final 1 , the route will encounter a 0 and 1 at the lowest to the highest bit of the right order, that is the symbol of the Huffman coding.)