Description: 讲解GIS空间数据水印信息隐藏与加密技术方法的论文，对编写GIS矢量数据的数字水印程序有一定帮助-GIS Spatial Data on the watermark and encryption techniques to hide the paper, the preparation of GIS vector data of digital watermarking procedure has a certain extent, help Platform: |
Size: 225280 |
Author:pedal |
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Description: matlab code for spatial watermarking .recover also the watermark.-matlab code for spatial watermarking .recover also the watermark. Platform: |
Size: 2469888 |
Author:anda |
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Description: 数字水印的一些源代码及各种不同空域和变换域资料-Some watermark source code and a variety of different spatial and transform domain data Platform: |
Size: 1422336 |
Author:yuqing |
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Description: 比较为基础的相关使用空间域使用两个伪序列块处理 为“0 1”，另一个是“1”水印恢复-Comparison-Based Correlation using block processing in the spatial domain
Uses two PN sequences one for a "0" and another for a "1"
Watermark Recovery Platform: |
Size: 1024 |
Author:小玉 |
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Description: 数字水印技术在空间域的最低有效位（LSB）算法，包括水印信息的嵌入和水印信息的提取。-Spatial domain digital watermarking technology in the least significant bit (LSB) algorithm, including the watermark embedding and watermark extraction. Platform: |
Size: 3928064 |
Author: |
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Description: 研究了一种图像水印技术, 该算法利用人类视觉系统( HVS)的特性, 根据JPEG量化表自适
应地调整, 采用随机置乱变换的方法进行空域关系调整, 将水印嵌入到图像的DCT 低频分量中-A kind of image watermarking techniques, the algorithm uses the human visual system (HVS) characteristics, according to adaptively adjust the JPEG quantization table, the random method of scrambling transformation of spatial relationship adjustment, the watermark is embedded into the image of the low frequency DCT in Platform: |
Size: 114688 |
Author:彩虹 |
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Description: 未经任何变化的原始图像上分块嵌入水印信息，且用伪随机序列作为水印，空域图像水印。-Without any change in the original image block embedded watermark information, pseudo-random sequence as a watermark, the airspace image watermark. Platform: |
Size: 888832 |
Author:欧啦啦 |
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Description: 空域水印图像，没采用分块技术，，水印为伪随机序列，算是图像水印初学者该会的第一个程序，在此基础上进一步深入学习。-Airspace watermark image, not using the block technique, the watermark is a pseudo-random sequence can be regarded as image watermarking beginners the first program, on the basis of further study. Platform: |
Size: 887808 |
Author:欧啦啦 |
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Description: 提出一种基于图像认证的半脆弱数字水印算法。该算法具有较好的自适应性，采用改进的低通滤波器，根据人眼的分辨能力设定
梯度阈值。实验结果证明，该算法对常规图像处理操作具有较强的鲁棒性，能够抵御JPEG顶级有损压缩，同时对于恶意篡改攻击(擦除、扭曲、挤压、光照等操作)表现出脆弱性，可检测出篡改的痕迹和类型。 -A semi-fragile watermark algorithm for image authentication is proposed, which has adaptability, and uses improved low-pass filter.
The threshold values of grads are set according to resolving power of human eyes. Experimental results show that the proposed algorithm is robust to
common data processing, which can resist JEPG top-level compression, as well the algorithm is fragile to malicious attack, such as abrasion,
distortion, extrusion, lighting, and so on. Moreover, the tampered sort and area of watermarked image can be reflected Platform: |
Size: 1985536 |
Author:韩磊 |
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Description: 提出一种基于DWT和DCT域的有意义二值图像数字水印算法 利用Arnold变换对水印序列进行置乱,消除象素的空间相关性,增加水印的安全性 而结合小波波变换和离散余弦变换的特性,将水印信息嵌入到图像变换域的低频和中频系数中,提高水印的鲁棒性和不可见性 实验证明该算法具有较好的抗压缩、抗噪音和抗剪切性。
-Making meaningful binary image digital watermarking algorithm based on DWT and DCT domain using Arnold transform the watermark sequence scrambling, eliminating the spatial correlation of pixel, increasing the security of the watermark and small wave transform and discrete cosine transform characteristics of the watermark information embedded in the low and intermediate frequency of the image transform domain coefficients, improve the watermark robustness and invisibility experiments show that this algorithm has good resistance to compression, anti-noise and shear resistance. Platform: |
Size: 578560 |
Author:apwyhh |
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Description: 文件夹LSB中是空域LSB算法程序，文件夹COX中是Cox算法主要程序，文件夹DCT中是频域加在中频的算法的程序。
步骤：把LSB，COX，DCT三个文件夹考在MATLAB目录下； 运行lsb_embed,programme,dct2_embed_mod即可。其中PSNR.m是计算峰值信噪比程序；attact.m & robust.m是攻击程序。-Content: folder LSB of spatial LSB algorithm program, folder COX Cox algorithm is the main program folder DCT frequency domain is added to the IF algorithm program. Steps: the LSB COX DCT three files folder test in the MATLAB directory run lsb_embed program, dct2_embed_mod can. The which PSNR.m calculate the peak signal to noise ratio procedures attact.m & robust.m exploit. Platform: |
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Author:Schindler |
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Description: 基于一个字嵌入水印0和1bit,原理是将图像转换到空间域后选择系数类嵌入水印，能抗打印扫描攻击-based on a word and embedding watermark 0 1bit, the principle is to convert the image into the spatial domain selection class watermarked coefficient, Platform: |
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Author:施贝 |
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Description: Watermarking is an operation of embedding infor-
mation into an image in a way that allows to identify ownership
of the image despite applying some distortions on it. In this
paper, we present a novel end-to-end solution for embedding and
recovering the watermark in the digital image using convolutional
neural networks. We propose a spreading method of the message
over the spatial domain of the image, hence reducing the local
bits per pixel capacity and significantly increasing robustness. To
obtain the model we use adversarial training, apply noiser layers
between the encoder and the decoder, and implement a precise
JPEG approximation. Moreover, we broaden the spectrum of
typically considered attacks on the watermark and we achieve
high overall robustness, most notably against JPEG compression,
Gaussian blur, subsampling or resizing. We show that an appli-
cation of some attacks could increase robustness against other
non-seen during training distortions across one group of attacks
— a proper grouping of the attacks according to their scope
allows to achieve high general robustness Platform: |
Size: 774757 |
Author:bamzi334 |
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Search - spatial watermark