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matlab_watermark
本文算法是将24 位真彩图的亮度分量分块
DCT ,然后利用DCT 量化系数的奇偶特性嵌入8
位灰度水印图,并通过PN 序列加密来保证水印的
安全性。算法中,将灰度图像转换为二进制数据
流,置乱后扩频调制,隐藏在宿主DCT 系数量化值
中,提取时不需要宿主信号,实现水印信号的盲提
取。(This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantization DCT coefficients and then use the parity properties of 8-bit grayscale watermark embedding map, and through the PN sequence of encryption to ensure the security of the watermark. Algorithm, the gray image into binary data stream, scrambling after the spread spectrum modulation, hidden in the host DCT coefficient quantization values, the extraction does not require the host signal, the blind watermark extraction.)
- 2010-12-24 11:11:10下载
- 积分:1
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gagarar
基于matlab的遗传算法程序 供来参考(Matlab-based Genetic Algorithm for reference)
- 2007-03-21 23:05:30下载
- 积分:1
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PolicyandTechnologyofDynamicinKorea
文章讲述了现在韩国的频谱政策和动态频谱接入技术。过去韩国的频谱管理政策需要特权,并且只有一小部分频谱可以公用。随着无线技术的发展,现在,韩国政府,使用了机遇动态频谱接入的新型频谱策略,例如LBT技术用于REID,UWB和FACS等。MIC还考虑如何在DTV过渡完成后,重新分配频谱。新型的无线电技术如认知无线电和SDR将在UHF边带中应用新的服务。MIC试图用一用有效地方式开放频谱并接受新技术用于频谱策略中。(In this paper, we introduce spectrum policies and
dynamic spectrum access technologies in Korea. In the past,
Korea spectrum management was the command and control with
exclusive usage rights and small portions of spectrum commons
bands. With the development of the radio technologies, Recently,
Korea government, MIC(ministry of information and com-
munication), has been adopting new spectrum policies based on
dynamic spectrum access technology such as LBT(Listen Before
Talk) for RFID, UWB, and FACS(Flexible Access Common
Spectrum) etc. MIC is also considering spectrum reallocation of
digital dividend bands after DTV transition. New radio
techniques such as cognitive radio and SDR will be applied to
new services in this UHF band. MIC is trying to open the radio
spectrum in an efficient way and adopt new technology into
spectrum policy. Thus MIC is extending the open spectrum such
as spectrum commons and spectrum liberalization bands. )
- 2010-06-29 17:35:00下载
- 积分:1
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lire_multi-images_dans_un_dossier
Ce programme permet la lecture de plusieurs images dans un sujet a l aide d un petit boucle for
- 2013-09-16 15:41:39下载
- 积分:1
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Single_Phase_Inverter
Matlab/Simulink模型单相逆变器,实现DC/AC的电力变换功能,电压幅值为311V,频率为50Hz。(Matlab/Simulink model of the single-phase inverters to achieve DC/AC power conversion function, the voltage amplitude of 311V, frequency is 50Hz.)
- 2013-12-24 20:43:04下载
- 积分:1
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Wind_Turbine
pdf介绍matlab/simulink中风力发电的各模块的功能和连接方式,比较实用(pdf Introduction to Matlab/simulink in wind power generation function of each module and connection, more practical)
- 2012-11-29 12:28:06下载
- 积分:1
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Genetic
matlab遗传算法工具箱matlab遗传算法工具箱matlab遗传算法工具箱(Genetic Algorithm Toolbox Genetic Algorithm ToolboxGenetic Algorithm ToolboxGenetic Algorithm Toolbox)
- 2009-11-20 03:32:02下载
- 积分:1
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NonlinearLoadModel2
在MATLAB/simulink下,搭建三相四线制非线性负载。(In the MATLAB/simulink, the three-phase four-wire system to build non-linear load.)
- 2011-01-16 10:12:59下载
- 积分:1
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36CDFB1Dd01
guide to matlab program for comparing m/m/1,m/m/n and m/m/k
- 2012-04-30 20:47:25下载
- 积分:1
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窗函数
主要包括余弦坡度窗、帕曾窗、指数窗和高斯窗,窗函数的选择对于结果起着重要的作用,针对不同信号和不同的处理目的来确定窗函数的选择才能取得良好的效果。(It mainly includes cosine slope window, parzen window, exponential window and gauss window)
- 2018-08-26 17:04:12下载
- 积分:1