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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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InstallGuide
The directory you selected may be incorrect, please re-select
- 2013-07-29 19:02:23下载
- 积分：1
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do_sift
this programme implements David Lowe s Scale Invariant Feature Transform (SIFT) algorithm to a grayscale image
- 2011-10-09 14:41:43下载
- 积分：1
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fig2_MSOM
The sourcecode of Universally-Convergent Squared-Operator Iteration Methods for fig2 using MSOM
- 2013-12-03 20:52:29下载
- 积分：1
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chengxiang
核磁共振的原理介绍，以及其相关领域的发展，介绍了脑功能成像的原理的处理技术(Introduce the principle of nuclear magnetic resonance, and its related fields of development, introduced the principle of functional brain imaging processing technology)
- 2010-11-10 10:38:08下载
- 积分：1
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matlab_Operation_research
matlab在运筹学中的应用 的教材（含源码）(matlab in the application of operations research in the teaching materials (including source code))
- 2009-05-10 20:41:49下载
- 积分：1
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HarrisCornerDetector
这是Harris角点算法的一个非常好的参考代码，使用的是Matlab语言，实现了非最大抑制功能。(The code calculates the Harris Feature Points. )
- 2009-12-01 14:24:15下载
- 积分：1
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dist
this program is used to calculate difference between to vectors
- 2011-12-02 02:59:23下载
- 积分：1
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yanzhengpinyuweifenhejifen
验证运用频域方法进行微分和积分准确性的程序(this is a program about validating caculous)
- 2009-06-01 21:52:35下载
- 积分：1
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cwnd_point
通过HWND获得CWND指针的小例子，可以编译通过(HWND pointer obtained through the CWND small example, you can compile)
- 2010-03-08 13:28:36下载
- 积分：1
