gangdu

数字水印(digitalwatermarking)是一种信息隐藏技术，它的基本思想是在数字图像、音频或视频等数字媒体作品中嵌入秘密信息，以便保护数字作品的版权、证明作品的真实可靠性、跟踪盗版行为或提供作品的附加信息。(Digital Watermarking (digitalwatermarking) is a kind of information hiding technology, its basic idea is in the digital image, audio or video digital media works, such as embedded secret information in order to protect the copyright of digital works to prove that the true reliability of the work, tracking piracy works or provide additional information.)

LU factorization of a square matrix using *no row exchanges*.

使用中科院虹膜数据库，实现了虹膜内外边界定位(Iris database using the Chinese Academy of Sciences, to achieve both inside and outside the iris boundary localization)

说明：  支持向量机和遗传算法的课件，希望多交流！！！！(Support vector machine and genetic algorithm courseware, I hope more exchanges! ! ! !)

battery connected DC Motor

利用matlab进行QAM的误码率仿真。利用ofdm技术。(Using matlab QAM BER simulation. Use ofdm technology.)

电磁转矩电动机广泛应用于电液伺服阀。它们有助于扭矩转换成比例的控制电流。(The electromagnetic torque motors are widely used in electrohydraulic servovalves. They serve to convert the control current into a proportional torque. For more details about this issue, please refer to my book:)

This MATLAB M-file implements a finite-difference time-domain solution of Maxwell s curl equations over a one-dimensional space lattice comprised of uniform grid cells. To illustrate the algorithm, a 1-GHz sinusoidal wave propagating in a nonpermeable lossy medium (epsr=1.0, sigma=5.0e-3 S/m) is modeled. The simplified finite difference system for nonpermeable.

new video adaption technique

这是一个计算近似熵的程序，后续开发可以通过控制维度m调节搜索最佳评价维度。(This is a program to calculate approximate entropy.you can control dimension to search the best uation dimensions for deeper study.)