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基于扩频的水印技术算法，用VC++实现，各种算法dct变换域、小波域算法-based on spread-spectrum technology watermark algorithm, with VC, algorithms Extra transform domain, wavelet domain algorithm
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CDMA 的仿真程序，Frequency Hopping Spread Spectrum,Random frequency hopps to form a spread signal-CDMA s simulation program, Frequency Hopping Spread Spectrum, Random frequency hopps to form a spread signal
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建立了信号从扩频、加干扰信号到解扩、求误码率的仿真模型系统。
经过小波镜像处理的与理想的状况的比较。-Established from the spread spectrum signal, plus interference signal to the de-spread, and the bit error rate system simulation model. After wavelet image processing and comparison of the ideal si
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基于扩频序列和小波变换的数字水印算法
的仿真程序-Sequence spread-spectrum based on wavelet transform and the digital watermarking algorithm simulation program
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基于小波变换的扩频图象数字水印，将水印嵌入到小波中。以保证信息的安全-Spread spectrum based on wavelet transform image watermarking, the watermark is embedded into the wavelet. To ensure information security
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利用高阶谱进行系统辨识，估计得到点扩散函数，然后再进行傅域或小波域的解卷处理。由此得到的超声图像，分辨率大大提高了。-System identification using higher order spectrum, is estimated to be the point spread function, and then for Fu domain or wavelet domain deconvolution processing. The resulting ultrasound im
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his paper presents a reversible data hiding method based on wavelet spread spectrum and
histogram modification. Using the spread spectrum scheme, we embed data in the coefficients of integer
wavelet transform in high frequency subbands. The pse
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technique is quite small owing to the low compression ratio. Based on this, a general least significant
bit-plane (LSB) embedding technique in the spatial domain was proposed by Celik et al. [6]. The payload and
imperceptibility of embedded dat
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为了进一步提高直接序列／跳频（ＤＳ／ＦＨ）扩频系统的抗干扰能力，基于小波包变换结合递归最小二乘算法设计
了一种变换域自适应干扰抑制算法，该算法采用小波包分解定位窄带干扰，递归最小二乘算法抑制窄带干扰。通过蒙特卡
罗仿真分析在增加抗干扰模块后，ＤＳ／ＦＨ系统工作在准静态时，在不同信噪比条件下抗窄带干扰性能。仿真结果表明：该
算法具有较强的自适应性以及抗窄带干扰能力，其性能优于传统的直接置零法，适用于多音干扰下的恶劣通信环境。-In order to further improve th
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Speech Based Watermarking for Digital Images
This paper presents a novel scheme of
watermarking of digital images for copyright protection and
authentication. In this paper we proposed a method of
embedding owner’s speech signal. Speech being
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In this paper we proposed a method of
embedding owner’s speech signal. Speech being a biometric data,
the watermark signal in this method is expected to be more
meaningful and has closer correlation with copyright holder.
The main issue of co
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