jisuanjifangzhen

自编二维离散傅里叶变换，仅限于二维变换，为什么一定要20个字。。(Two-dimensional discrete Fourier transform self)

这是一个使用hough变换来实现一副图像中直线检测的代码,比较高效而且检测效果很不错(use hough transform to achieve an image line detection code, more efficient and effective detection is pretty good)

主要对matlab在编程方面的应用作一个较详细的介绍，其中涉及了编程必然须注意的变量类型、数据类型、程序控制语句及matlab函数等相关内容(matlab for programming)

waterfill Water Filling Algorithm.

power flicker meter model is shown in this model

MATLAB 编程有助于初学者进行学习，了解以及相应的运用(MATLAB programming will help beginners to learn, understand, and use of appropriate)

convertiseur analogique numerique cours

本文的秘密编码离理想的码率还很远，建立的无 条件秘密通信系统的稳定性和秘密性有待进一步证明，无条件安全系统秘密编码 方案还处于起步研究阶段，还有很多新的突破点等待研究。(Stability and secrecy of the secret coding bit rate still far from the ideal, the establishment of the unconditional secret communication system needs to be further proof, the the unconditional security system secret coding scheme is still at an early research stage, there are a lot of new breakthrough wait for research .)

嵌入同步信号以确定水印的嵌入位置，同时还可以抵抗各种时间轴上的同步攻击(Embedded sync signal to determine the location of the embedded watermark, but also resistant to a variety of simultaneous attacks timeline)

说明：  BPSK,Pi/4DQPSK,16QAM调制解调的实现：实现具体的调制解调功能(BPSK, Pi/4DQPSK, 16QAM modem realization: the realization of specific functions of modulation and demodulation)