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Information-hiding
基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。(Based on DCT (discrete cosine transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.)
- 2021-04-06 09:29:03下载
- 积分:1
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利用差分进化算法(Differential Evolution)
利用差分进化算法(Differential Evolution)实现对经典函数sphere的验证(The use of differential evolution algorithm (Differential Evolution) to achieve the verification of classical function of sphere)
- 2020-06-26 20:40:01下载
- 积分:1
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Controlling_console_applications_demo
通过程序控制CMD程序的输出,并对其进行解析和过滤(CMD program through the control output, and its analysis and filtering)
- 2007-11-22 00:18:40下载
- 积分:1
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mmc_design
单列多服务台排队系统 概要设计
首先根据系统初始化输入的数据对系统进行初始化,根据顾客的数量和顾客平均到达时间间隔,产生系统中每名顾客到达时间间隔,将每名顾客到达时刻插入事件表,事件表根据时间采用最小堆进行排序,最早发生的事件放到事件表的顶端。(Summary of single multi-server queuing system design is first initialize the input data according to the system to initialize the system, according to the number of customers and average customer arrival time, a system in the arrival time for each customer, each customer will get time into the event table, event table with the minimum heap according to the time to sort the events into the first event table top.)
- 2010-12-24 19:47:35下载
- 积分:1
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PGA
功能[DATAOUT]= PGA(DATAIN),执行相位梯度
%ISAR自动对焦。
%
%DATAIN ISAR范围内的实时数据。
DATAOUT%范围内的实时数据已被删除平移
%相位误差。
%
%参考:
%D.E.瓦尔,P.H.艾歇尔,特区吉利亚,C.V. Jakowatz,“相
%梯度自聚焦一个强大的工具,用于高分辨率SAR相
%修正“,硕士论文。航空。&电子系统,第30卷,3,1994。(function [dataout]=PGA(datain) performs phase gradient
autofocus of ISAR.
datain is range-time data of ISAR.
dataout is range-time data that have been removed translational
phase error.
Reference:
D.E. Wahl, P.H. Eichel, D.C. Ghiglia, C.V. Jakowatz, "Phase
gradient autofocus-a robust tool for high resolution SAR phase
correction," IEEE Trans. Aero. & Elec. Sys., vol. 30, no. 3, 1994.)
- 2013-08-19 21:37:43下载
- 积分:1
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differential-on-mathematica
基于mathematica的数学微分实验书籍,包括mathematica的基本教程和实验源码(Basic tutorials and source-based experimental math mathematica differential experiment books, including the mathematica)
- 2013-12-25 22:15:39下载
- 积分:1
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M_QAM
Matlab/Simulk M-QAM Modulation & Demodulation module
- 2010-10-14 08:52:14下载
- 积分:1
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Intelligent-Control-of-matlab
智能控制及其matlab实现,包括神经网络控制、模糊逻辑控制、预测控制的matlab实现。(Intelligent Control of matlab realize, including neural network control, fuzzy logic control, predictive control matlab.)
- 2013-10-22 16:27:34下载
- 积分:1
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MATLAB_LMS2
自适应滤波器LMS算法的误差曲线和误差平方曲线,并在等高线上绘出LMS100次迭代的平均轨迹曲线,配合数字信号处理2课程的学习(LMS adaptive filter algorithm and error squared error curve curve and contour line drawing LMS100 iterations the average trajectory curve, with 2 digital signal processing courses)
- 2008-04-25 10:00:50下载
- 积分:1
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MATLAB-source-code-version-of-m
冈萨雷斯数字图像处理MATLAB版m代码源码(Gonzalez Digital Image Processing MATLAB source code version of m)
- 2014-10-24 18:38:19下载
- 积分:1