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HEU_KMSActtivator
说明: 本文提出了一种基于混沌加密的DCT域二值图像数字水印算法.该算法首先利用混沌序列将含有版权信息的有意义二值图像水印进行加密,然后利用人眼视觉系统(HVS)的特性将原始载体图像进行块分类,最后将不同强度的水印分量嵌入到不同类的图像块DCT中频系数中去.利用混沌序列对水印进行加密,使水印本身具有安全性,对数字作品进行双重保障.通过高斯噪声,椒盐噪声以及JPEG压缩和剪切等攻击试验,表明了该算法具有较好的鲁棒性.(Encryption in DCT domain is proposed. Firstly, the meaningful binary image watermark containing copyright information is encrypted by using chaotic sequence, and then the original image is classified by using the characteristics of human visual system (HVS), Finally, the watermark components with different intensities are embedded into the DCT intermediate frequency coefficients of different types of image blocks. Chaotic sequences are used to encrypt the watermark, so that the watermark itself has security and double protection for digital works. Experiments on Gaussian noise, salt and pepper noise, JPEG compression and clipping show that the algorithm has good robustness)
- 2021-04-15 12:12:28下载
- 积分:1
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Equalization
说明: 信道均衡的仿真,预置式均衡滤波器,通过均衡看均衡前后的误码率(Simulation of channel equalization, preset EQ filter, through a balanced look at the bit error rate before and after equilibrium)
- 2009-07-29 10:26:49下载
- 积分:1
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FEM
计算梁的固有振型额的有限元方法a FEM program to solve the models of a beam(a FEM program to solve the models of a beam)
- 2012-05-01 16:54:12下载
- 积分:1
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Desktop
改进前推回代潮流算法,计算潮流,适应强,迭代次数少。(Improved push back the tide before generation algorithms, computing trends, adaptable, less iterations.)
- 2014-11-09 20:34:27下载
- 积分:1
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Pushang
基于谱熵的语音检测,能正确区分语音和各种噪声(Based the spectral entropy voice detection can correctly distinguish between voice and noise)
- 2013-03-26 21:58:27下载
- 积分:1
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Hand_Geometry_biometrics
The matlab code contains feature extraction of Hand goemetry in biometrics
- 2009-10-24 15:11:12下载
- 积分:1
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FFT--IFFT
对原始正弦信号进行傅里叶变换与逆变换并给出结果(Fourier transform and inverse transform the original sinusoidal signals and gives results)
- 2013-04-12 09:51:52下载
- 积分:1
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zoom
simple program in matlab for making zoom to an image
- 2009-11-23 01:35:14下载
- 积分:1
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BasicSnake_version2d
Snake模型和GVF Snake模型的程序,包括2D和3D实现。(Snake model and GVF Snake model procedures, including 2D and 3D.)
- 2011-01-26 15:46:12下载
- 积分:1
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Tamrine-MATLAB
Robot path using fuzzy toolbox of MATLAB
- 2011-07-25 20:57:11下载
- 积分:1