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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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Code-on-MATLAB
相关ca码在matlab软件平台下的仿真和编程相关理论知识(
Related ca code simulation in matlab software platform and the relevant theoretical knowledge)
- 2013-05-13 13:37:04下载
- 积分：1
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Untitled
说明： 滤波处理，对信号进行滤波处理，提取信号的故障特征频率(Filtering, filtering the signal, extract the fault characteristic frequency of the signal)
- 2010-04-17 12:03:03下载
- 积分：1
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802.11a_OFDM
OFDM相关 802.11a物理层仿真程序(related 802.11a OFDM physical layer simulation program)
- 2007-05-09 12:24:49下载
- 积分：1
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Fourier
实现傅里叶变换，并进行频谱分析其中包括带通子波波形的实现。(The Fourier transform )
- 2015-04-15 19:19:18下载
- 积分：1
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dwta
离散小波变换的一个程序，希望对大家有所帮助。(Discrete wavelet transform a program, we want to help.)
- 2010-08-23 16:48:24下载
- 积分：1
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function-test1
single user energy detection
- 2012-05-03 22:54:05下载
- 积分：1
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imagedeconv2
图像的二维反卷积，其中包括butterworth的低通滤波等多项功能(This used the same script as for butterworth2.m example。 Low Pass Filter to create a blurred image. Simply do deconvoution of butterworth low ass(divide rather multiply)
to invert the result
Note in practice the ideal forward blurring function will not be known
SO results will not be so perfect.)
- 2021-04-19 20:58:51下载
- 积分：1
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USE-OF-GA-BP
GA-BP 可 以 用 来 做 很 多 事 情(USE OF GA-BP)
- 2012-05-05 10:04:38下载
- 积分：1
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C2G2FSnake
this program treat image processing and segmentation methods and can help for functions which concern segmentation, snakes (active contours)
- 2014-08-31 01:16:38下载
- 积分：1
