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Distortionless_Data_Hiding
The code implements the following paper:
Guorong Xuan, Jiang Zhu, Jidong Chen, Shi Y.Q., Zhicheng Ni, Wei Su, "Distortionless data hiding based on integer wavelet transform" IET Electronics Letters, Volume: 38, Issue 25, page 1646- 1648, December 2002. (ISSN: 0013-5194)
The watermark embedding and extraction modules have been implemented separately.
The watermark embedding module embeds the watermark using bitplane compression in the integer wavelet transform domain.
The watermark extraction module extracts the previously embedded watermark and restores the original image.
A logo image is used as a watermark but can be replaced with any thing.
- 2010-07-30 09:20:07下载
- 积分:1
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Curve_fitting_question
学习曲线拟合过程中肯定会遇到的问题,我总结了一下,希望有用。(The process of learning curve will certainly be problems, I summed up what I hope helpful.)
- 2010-09-09 22:01:08下载
- 积分:1
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wavelet
验证小波对信号频率的细分,验证重构信号的频谱。(Validation of wavelet in signal frequency subdivision, reconstructing signal spectrum.)
- 2013-05-09 15:30:58下载
- 积分:1
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spra143
good book for matlab
- 2009-12-29 13:48:31下载
- 积分:1
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fir_lin_phase_lowpass_max_atten
Designs a linear phase FIR lowpass filter such that it:
- minimizes maximum stopband attenuation
- has a constraint on the maximum passband ripple
This is a convex problem (when sampled it can be represented as an LP).
minimize max |H(w)| for w in the stopband
s.t. 1/delta <= |H(w)| <= delta for w in the passband
( where H is the frequency response function and variable is
h (the filter impulse response). delta is allowed passband ripple.
)
- 2011-05-27 21:45:16下载
- 积分:1
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LongRange
说明: 采用谱分析的方法,通过拟合研究信号的长程相关特性..(long-range correlation using matlab...)
- 2010-04-26 22:20:20下载
- 积分:1
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wmicGetHardwareInfos
用WMIC在WINDOWS上得到计算机硬件信息(Description wmicGetHardwareInfos queries informations about the computer hardware (OS, CPU, GPU, RAM, Disk)
It displays results in the command window or in a text file.
wmicGetHardwareInfos requires wmicGet (submission#47858 on the File Exchange).
Acknowledgements Wmic Get inspired this file.
Required Products MATLAB
MATLAB release MATLAB 8.3 (R2014a)
Other requirements Windows
)
- 2014-09-17 09:01:13下载
- 积分:1
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Riemann_solver
用matlab求解的一维黎曼问题的精确解,有限体积格式(Using matlab dimensional Riemannian problem solving an exact solution, finite volume scheme)
- 2013-10-28 10:21:46下载
- 积分:1
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matlabyingyong
matlab在科学计算中的应用的相关课件(matlab in scientific computing application courseware)
- 2013-03-31 10:38:03下载
- 积分:1
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ChannelCoding_Viterbi
一个信道编码解码以及性能比较。
包括卷积码编码器,使用硬判决的维特比译码器。
比较了不同信道环境下(SNR)的误码率性能。(Comparing a channel codec, and performance. Including the convolution code encoder, using hard decision Viterbi decoder. Compare different channel environments (SNR) BER performance.)
- 2021-04-27 10:18:44下载
- 积分:1