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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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leidahuibo
生成雷达回波的matlab源程序，包括噪声，线性调频等相关内容，详细注释(Generate radar echo matlab source code, including noise, chirp, detailed notes)
- 2012-11-24 10:48:21下载
- 积分：1
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MATLAB-super-learning-program-code
matlab时频分析，STFT, CWT，WVD，平滑伪WVD，伪WVD，Rihacazek分布，Margenau-Hill分布，Page分布，伪Page分布，Choi-Williams分布，重排伪Wigner-Ville分布， 重排伪page分布，对时频分析学习的很好资料，对非平稳信号处理有很大帮助，无损检测，振动检测，对学习和处理信号有很大帮助(Matlab time-frequency analysis, STFT, CWT, WVD, smoothed pseudo Wigner Ville distribution (WVD), pseudo WVD, the distribution of Rihacazek, Margenau Hill distribution, distribution page, pseudo page distribution, Choi Williams distribution, rearrangement of pseudo Wigner Ville distribution, rearrangement pseudo page distribution, time-frequency analysis of very good learning materials, for non-stationary signal processing is of great help, nondestructive testing, vibration testing of learning and signal processing is of great help)
- 2021-03-13 22:59:24下载
- 积分：1
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S4M_3p014PD
sislab使用说明书，sislab是matlab中重要的地震处理工具箱！(sislab)
- 2010-08-28 14:38:44下载
- 积分：1
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xinhaofenxi
信号分析与处理的基本原理，并且介绍了虚拟测试系统及其中的信号处理模块(signal analysis and processing of the basic principles, and introduced the virtual test system and the signal processing module)
- 2007-05-18 11:57:41下载
- 积分：1
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BIN
说明： 建立一个仿生四足机器人，并驱动其运动，里面从建模到运动都有，基本全为自己手写，供大家参考(Build a quadruped robot and drive it)
- 2019-01-07 03:10:27下载
- 积分：1
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vocabulary
matlab 实现的词汇量统计的云模型工具。统计效果好(matlab vocabulary to achieve statistical cloud model tools. Statistical effect)
- 2011-01-05 14:39:41下载
- 积分：1
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lines
this is create template using matlab
- 2012-08-03 17:00:17下载
- 积分：1
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AM
说明： This is code to simulation of AM, FM, PSK, QAM modulation
- 2014-11-29 12:20:52下载
- 积分：1
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A3D
对称阵子天线的方向函数与方位角无关，及方向图是以振子轴线为基准的旋转对称图形，这(Symmetry time around antenna azimuth direction has nothing to do with the function, and the pattern is rotational symmetry axis vibrator graphics benchmark, which)
- 2014-01-05 19:48:48下载
- 积分：1
