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dwttest
- matlab做的小波变换的测试和仿真，用于图像处理中小波变换（仅供大家参考）-digital wavelet transform(DWT) test and simulation by using matlab, for digital image processing
JPEG2000_006.pdf
- 本文提出了一种基于提升算法的高效JPEG2000二维离散小波变换(2D—DWT)~ 结构，将边界延拓内嵌于离散小波变换过程中，减少了所需的内存空间和功耗。采用W 扫描输入方式和行列并行处理结构，加快了变换速度，大大提高了小波变换的效率。整个二维离散小波变换结构已经通过FPGA硬件仿真验证。-This paper presents a highly efficient algorithm based on lifting JPEG2000 two-dimensional discrete wave
svd_image
- This matlab code for SVD based image watermarking -This is matlab code for SVD based image watermarking
CollectionsofWaterMarkingAttack
- 关于各种数字水印攻击的MATLAB代码，可以用于仿真实验，调用方便简单-Digital watermarking attacks on a variety of MATLAB code that can be used for simulation experiments, to facilitate a simple call to
dwt
- 一种9/7整数小波变换，已通过仿真验证，可供初学者借鉴学习-A 9/7 wavelet transform, has been verified by simulation, for beginners to learn from
Idwt
- 一种9/7整数小波变换的逆变换。已通过仿真。可供初学者学习。-A 9/7 integer wavelet transform inverse transformation. Has passed the simulation. For beginners to learn.
a-watermarking-based-on-dwt
- 这是个由matlab仿真实现的基于dwt的数字水印技术算法，实现了数字水印的嵌入、提取和一系列攻击实验。效果良好。-This is implemented by the matlab simulation of digital watermarking technique based on dwt algorithm, realization of the digital watermark embedding, extraction and a series of attacks on exp
Audio-watermarking-internship-report
- 音频信号的水印设计，以音频信号为载体，将秘密信号嵌入载体音频信号当中， 实现音频信号的水印。采用变换域小波变换（DWT）的技术，将音频信号进行小波变换，提取出低频分量，然后将水印嵌入到音频信号的低频当中。实验当中先在MATLAB 上面进行了仿真实验，并且通过加入噪声以及滤波等进行干扰以此检测了算法的透明性和健壮性，然后利用C 语言进行了测试，最后经 过一些修改，例如加入定时器以及进行中断的处理和加入缓冲在DSP 板子上实现了加入水印的音频声音的播放。-Audio signal water
A-Watermarking-Algorithm(MATLAB)--
- 盲水印提取时不需要参考原始载体图像,在信息隐藏、版权保护等方面具有更广泛的应用前景。提出的盲水印算法在分块离散余弦变换(DCT)和离散小波变换(DWT)的基础上,利用关系双方DCT系数和DWT系数在受到攻击时具有相同变化趋势的特点,采用关系嵌入和量化嵌入的自适应选择嵌入策略,较大幅度地提高了盲水印提取的鲁棒性。同时在量化嵌入中采用抖动调制,实现了水印透明性和鲁棒性调节的便捷性。大量仿真实验结果表明该算法对噪声干扰、低通滤波、JPEG压缩、对比度增强等攻击有很好的鲁棒性和透明性。关键词 数字水印盲
dwttest
- matlab做的小波变换的测试和仿真，用于图像处理中小波变换（仅供大家参考）-digital wavelet transform(DWT) test and simulation by using matlab, for digital image processing
robstance
- In this paper we propose a watermarking system that uses the biorthogonal discrete wavelet transform, DWT and the message is encoded before embedding. The proposed watermarking method is very simple, implying four steps: turbo coding of