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Description: 基于Matlab实现了各种数字图像水印，包括小波变换、lsb等
-Based on Matlab realize a variety of digital image watermarking, including the wavelet transform, lsb, etc.
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Size: 243712 |
Author: 王敏 |
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Description: 最低有效位嵌入水印的matlab程序，比较基础的，希望对给位有用。-Least significant bit of matlab watermark embedding process, the basis of comparison, in the hope that useful to the bit.
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Size: 4096 |
Author: 杨霞 |
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Description: 为了提供较大的秘密信息嵌入量和保持良好的载密图像质量,依据人眼对变换剧烈及较暗区域均不敏感的视觉特点,提出了一种基于小波对比度和最低比特位替换(LSB)的图像密写方法.该方法先将载体图像分成固定大小的小块,对每一小块进行小波分解后计算小波对比度.然后,根据该块小波对比度绝对值之和确定该块可以嵌入的位平面层数.最后,采用LSB密写技术逐层嵌入秘密信息.实验结果表明,该密写方法能嵌入较多的信息和保持良好的载密图像质量,并且可直接从载密图像中提取秘密信息.-In order to provide larger capacity of the hidden secret data and to maintain a good visual quality of stego-image,in accordance with the visual property that human eyes are insensitive to edged area and dark area,a novel steganographic method based on wavelet contrast and Least-Significant-Bit(LSB)replacement is presented.First,an image is divided into blocks,and every block is decomposed into one-level wavelet to obtain the wavelet contrast.Then,the number of bit-plane embedded is decided with the s...
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Size: 263168 |
Author: boe |
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Description: steg tool to derive steg results of stegged photos.. very helpful to identify easy steg pic s like LSB thing or wavelet transform
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Size: 279552 |
Author: pappu |
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Description: video watermarking based on dct, svd, LSB and wavelet all works good use vipmen video in matlab
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Size: 1180672 |
Author: satguru |
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Description: 基于小波的编码变换和图像的二次压缩，区别于经典的小波变换-Coding based on wavelet transform and the second image compression, wavelet transform is different from the classic
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Size: 1024 |
Author: 宁凝 |
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Description: 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 data are largely improved because of the more efficient compression technique.
Domingo-Ferrer et al. [5] proposed a spread spectrum data hiding method that is only reversible with respect
to the modified version of the original host signal . Xuan et al. [7] proposed a reversible data hiding algorithm
carried out in the integer wavelet transform (IWT) domain. An improved version of this algorithm was
reported in [11]. By exploiting the superior features of wavelet transform, in particular, the high decorre-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 data are largely improved because of the more efficient compression technique.
Domingo-Ferrer et al. [5] proposed a spread spectrum data hiding method that is only reversible with respect
to the modified version of the original host signal . Xuan et al. [7] proposed a reversible data hiding algorithm
carried out in the integer wavelet transform (IWT) domain. An improved version of this algorithm was
reported in [11]. By exploiting the superior features of wavelet transform, in particular, the high decorre
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Size: 474112 |
Author: Ragu |
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Description: 数字水印采用小波变换的MATLAB算法，嵌入位置是LSB平面-Digital watermarking algorithm
based on wavelet transform
algorithm
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Size: 215040 |
Author: 赵艳 |
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Description: 本课题为基于MATLAB的小波变换dwt和离散余弦dct的多方法对比数字水印系统。带GUI交互界面。有一个主界面GUI，可以调用dwt方法的子界面和dct方法的子界面。流程包括，读取宿主图像和水印图像，嵌入，多种方法的攻击（剪切，加噪，旋转等），提取，最后利用psnr峰值信噪比进行评价不同攻击下，鲁棒性的好坏。(This project is based on MATLAB wavelet transform DWT and discrete cosine DCT multi method contrast digital watermarking system. With GUI interactive interface. There is a main interface GUI, which can call the sub interfaces of DWT method and DCT method. The process includes: reading host image and watermark image, embedding, attacks of various methods (cutting, adding noise, rotation, etc.), extracting. Finally, PSNR peak signal-to-noise ratio is used to evaluate the robustness of different attacks.)
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Size: 10000384 |
Author: MATLAB道长 |
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