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Description: 基于LSB的图像中数据加密隐藏算法程序
图像的组成无非是一些字符串或者一些字节组成的字符串，然而，每一个字节数据位的重要度并不是一样的，两个相邻字节往往只有低位是不一样的。例如：00100110和00100111代表了两个不同渐变度的红色，但是就人眼是分辨不出来的。最低有效位LSB算法，就是利用这一点，达到图像压缩，或者数字水印的功能。 -LSB of the image-based data encryption to hide the image composition algorithm procedure is nothing more than some number of bytes or string composed of string, however, one byte for each data bit is not an important degree of the same, and two adjacent words section, usually only low level is not the same. For example: 00100110 and 00100111 represent the gradient of two different degrees of red, but on the human eye is not out to tell. Least significant bit LSB algorithm, is to take advantage of this point, to achieve image compression, or digital watermark feature.
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Size: 248832 |
Author: aaa |
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Description: 改程序实现了数字水印的功能，很好的代码，对学习数字水印的同仁很有帮助。-It is a good codes to acheive the watermark!
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Size: 18432 |
Author: 向桂英 |
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Description: 各种人工神经网络的MATLAB源码，较全,BP,RFB等，可用于工程开发，和教学实验-collection of ANN matlab source codes
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Size: 183296 |
Author: liguoliang |
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Description: 六个代码分别是小波变换用于水印密写,离散余弦变换应用于水印密写和空域算法水印算法-Six codes are used for watermark Steganography wavelet transform, discrete cosine transform used in secret writing and airspace watermark Watermarking Algorithm
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Size: 5120 |
Author: 张楠 |
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Description: more watermark codes
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Size: 10883072 |
Author: anda |
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Description: 使用纠错码的基于人类视觉系统的数字水印方案(中英文翻译）-Use error-correcting codes based on human visual system digital watermark scheme (English translation)
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Size: 886784 |
Author: xutongxue |
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Description: 对一幅图像增加水印，这个水印是随机的+1 或者-1的骂， 然后在解码获得水印-adding watermark to an image and then from a watermarked image to
get the codes
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Size: 1024 |
Author: LUO |
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Description: 图像的加解密，水印过程，以及各种代码的相应实现。-Encryption and decryption of the image, the watermark process, and the various codes corresponding implementations.
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Size: 16025600 |
Author: 石超超 |
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Description: 林舒的channel code电子版书籍，无水印，超清-Shu Lin' s channel code electronic version of books, no watermark, ultra-clear
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Size: 4858880 |
Author: 姜莹 |
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Description: 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 the watermark message, embedding the turbo coded
watermark into the host image using a perceptual mask,
extraction of the turbo coded watermark from the watermarked,
possibly corrupted image, and turbo decoding of the watermark.
The goal of this paper is the association of the DWT and duobinary turbo codes. Some simulation examples prove the
performance of the proposed watermarking method- 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 the watermark message, embedding the turbo coded
watermark into the host image using a perceptual mask,
extraction of the turbo coded watermark from the watermarked,
possibly corrupted image, and turbo decoding of the watermark.
The goal of this paper is the association of the DWT and duobinary turbo codes. Some simulation examples prove the
performance of the proposed watermarking method
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Size: 314368 |
Author: atefe |
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Description: Code to implement a watermarking scheme, apply JPEG Compression and then extract the watermark. Code also includes ways to assess the resistance of the watermark to attacks.
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Size: 9216 |
Author: RTI |
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Description: 1、完全支持生成htm，html后缀的静态文件，目前支持生成4种文件后缀：htm,html,shtml,asp。
2、修正以前整站加密的js伪加密为动态加密。
3、修正了登录框调用的动态读取及验证码问题。
4、加入了相册缩略图和图片水印。
5、加入了回复和评论验证码。
6、用户管理后台首页的改进。-1, full support for generating html, html suffix static document, currently supports four kinds of documents generated suffix: htm, html, shtml, asp.
2, the amendment before the whole station js encrypted pseudo encryption dynamic encryption.
3, amended the dynamic code reading and verification issues the login box call.
4. Add the album thumbnails and image watermark.
5, add comments and reply codes.
6, user management background Home improvement.
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Size: 890880 |
Author: qefl |
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Description: 可采用一段伪随机序列来控制水印嵌入位置,matlab代码-It may be a period of pseudo-random sequences to control the watermark embedding position, matlab codes
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Size: 14336 |
Author: 李小龙 |
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Description: codes in mat lab for watermark generation and embedding
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Size: 5164032 |
Author: haraon |
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Description: 将要嵌入的多张水印图利用不同正交码调制，之后嵌入到被嵌入图片的小波变换系数中，对小波系数做逆变换，得到已嵌入水印图的图像。利用逆过程可提取出被嵌入的图像(The multiple watermark images to be embedded are modulated by different orthogonal codes, and then embedded into the wavelet coefficients of the embedded images, and the inverse coefficients of the wavelet coefficients are transformed to get the image with embedded watermark. The embedded image can be extracted by the inverse process)
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Size: 738304 |
Author: ziv000 |
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Description: 提出一种基于 QR 码的自适应抗打印扫描盲水印算法。方法 首先对载体 QR 码进行三级小
波变换，并对低频部分进行 4×4 分块 Schur 分解，然后利用子块酉矩阵的系数差值的稳定性，将二值
水印信息自适应嵌入到载体 QR 码中，最后对含水印 QR 码打印扫描并提取出水印信息。同时，算法实 现了盲提取。结果 算法能较好抵抗打印扫描攻击，并对高斯噪声、椒盐噪声、斑纹噪声、泊松噪声、
JPEG 压缩等攻击具有较强的鲁棒性。结论 算法具有较强的抗打印扫描性能，可以广泛应用于数字产品
的版权保护。(An adaptive watermark blind watermarking algorithm based on QR codes is proposed. Methods first of all, the carrier QR code is three levels smaller.
Wave transformation and 4 *4 block Schur decomposition of the low frequency part are carried out. Then the binary values are obtained by using the stability of the coefficient difference of the subblock unitary matrix.
The watermark information is embedded into the carrier QR code adaptively. Finally, the watermark information is extracted by scanning the watermark QR code. At the same time, the algorithm achieves blind extraction. Results The algorithm can resist the attack of print and scan, and can resist Gaussian noise, salt and pepper noise, speckle noise, Poisson noise.
JPEG attacks such as compression have strong robustness. Conclusion the algorithm has strong resistance to print scanning and can be widely used in digital products.
Copyright protection.)
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Size: 4277248 |
Author: macowin |
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