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[Special Effects] HVS

Description: 人类视觉系统的matlab工具箱，包括亮度掩膜，对比度掩膜和对比度灵敏度函数的实现。是学习人类视觉系统非常好的入门材料。
Platform: | Size: 3831 | Author: 袁红星 | Hits:

[Graph program] visiblemark1

Description: 空域可视水印算法（matlab实现）， 考虑了HVS特性，可见水印嵌入同时考虑了原图像和水印图像视觉特性。-airspace visual watermarking algorithm (Matlab achieved), in consideration of HVS features embedded watermark can be seen taking into account the original image and a watermark image visual characteristics.
Platform: | Size: 2048 | Author: 杨柯 | Hits:

[matlab] dctblock

Description: 数字水印的嵌入和检测，dct， 作者Mao Li Purpose:an algorithm to achieve the embeding watermarking to a image by dct bloking and hvs,then detect the watermarking by comparability. -digital watermark embedding and detection, Copy, the writer Mao Li Purpose : an algorithm to achieve the embeding watermark ing to a image by Extra bloking and hvs. then detect the watermarking by comparability .
Platform: | Size: 1024 | Author: awen | Hits:

[Software Engineering] watermark_2

Description: 提出了一种离散小波变换域实现图像水印的方法。这种算法充分利用小波变换的特点,把原始图像及水印图像塔式分解,在多分辨率分解后的相同的频段来嵌入水印信息。该方法也利用了人眼视觉特性,算法简单而有效。实验证明,该算法较好地解决了水印不可见性与鲁棒性之间的矛盾,对常见的水印攻击都有较强的鲁棒性。-presents a discrete wavelet transform domain image watermarking method. This algorithm using wavelet transform characteristics, the original image and the watermark image tower decomposition, Multiresolution decomposition in the same frequency band to the embedded watermark. The method has also been used HVS, the algorithm is simple and effective. Experiments show that the algorithm can solve the watermark is visible with the robust nature of, common to have more attacks watermark robustness.
Platform: | Size: 151552 | Author: yy | Hits:

[Other] HVS

Description: Basic introduction to Human Visual System (HVS) Toolbox func_LuminanceMasking -- Show luminance masking effect of HVSfunc_ContrastMasking -- Show Contrast masking effect of HVSfunc_ColorCSF -- Show Contrast Sensitive Function (CSF) via color Sinwave stimulusfunc_GrayCSF -- Show Contrast Sensitive Function (CSF) via gray Sinwave stimulus File Details -Basic introduction to Human Visual System (HVS) Toolbox func_LuminanceMasking Show luminance masking effect of HVSfunc_ContrastMasking Show Contrast masking effect of HVSfunc_ColorCSF Show Contrast Sensitive Function (CSF) via color Sinwave stimulusfunc_GrayCSF Show Contrast Sensitive Function (CSF) via gray Sinwave stimulus File Details
Platform: | Size: 3072 | Author: 田卉 | Hits:

[Special Effects] HVS

Description: 人类视觉系统的matlab工具箱，包括亮度掩膜，对比度掩膜和对比度灵敏度函数的实现。是学习人类视觉系统非常好的入门材料。
Platform: | Size: 3072 | Author: 袁红星 | Hits:

[Crack Hack] DWThundunjiami

Description: 文中提出了一种基于离散小波变换和混沌加密的数字水印新算法,采用二维混沌变换对水印图像加密 对载体图像进行多分辨离散小波变换,应用小波系数判断载体图像的纹理复杂程度后,依据人眼的视觉系统(HVS)特性,将水印信号嵌入到图像的低频部分,对图像的不 同分解层分别选取不同的纹理阈值和水印嵌入强度,将数字水印嵌入到相同分辨层的原始图像中,提高了水印算法的鲁棒性。在检测和提取水印时,通过水印相似度(NC)和峰值信噪比( PNSR)评价水印质量,实验结果表明提出的算法可以抵抗剪裁、JPEG压缩、滤波等几何攻击,算法简单,计算复杂度小,兼顾了水印的不可见性和鲁棒性。-err
Platform: | Size: 440320 | Author: 王娜 | Hits:

[Special Effects] imagewatermarkcheby

Description: 调用Cheby 函数产生混沌序列，嵌入水印。嵌入提取过程完整。-Cheby call functions to generate chaotic sequence, embedded watermark. Embedded in a complete extraction process.
Platform: | Size: 1024 | Author: zhu | Hits:

[matlab] 598752watermark

Description: 水印嵌入(小波，dct,lsb)实例都有-watermarking emding
Platform: | Size: 2140160 | Author: AAA | Hits:

[Wavelet] WaveletTransformsinMATLAB

Description: 执行一维和二维小波变换在MATLAB环境中。十几包括的小波函数有： * Haar * Daubechies 1-6 * Symlets 1-6 * Coiflets 1 and 2 * Splines and reverse splines * CDF 9/7 and Le Gall 5/3 * S+P wavelets (2,2), (4,2), (4,4), (6,2), and (2+2,2) * Two Ten "TT" * Low-complexity design * HVS design Visual 9/3 -Description Perform 1D and 2D wavelet transforms in MATLAB. WAVELET(W,L,X) computes the L-stage discrete wavelet transform (DWT) of signal X using wavelet W. For the inverse transform, WAVELET(W,-L,X) inverts L stages. Included wavelets are * Haar * Daubechies 1-6 * Symlets 1-6 * Coiflets 1 and 2 * Splines and reverse splines * CDF 9/7 and Le Gall 5/3 * S+P wavelets (2,2), (4,2), (4,4), (6,2), and (2+2,2) * Two Ten "TT" * Low-complexity design * HVS design Visual 9/3
Platform: | Size: 10240 | Author: chen huayi | Hits:

[Graph program] watermark_image

Description: 结合离散小波变换(DWT)技术，利用DWT与HVS相结合的良好特性，探索和建立了一种新的图像质量客观评价方法-taking advantage of the similarities of discrete wavelet transform (DWT) with HVS，a new methods for integrated image quality assessment
Platform: | Size: 200704 | Author: 朱建伟 | Hits:

[matlab] dwprotected

Description: Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document. A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.
Platform: | Size: 98304 | Author: omar | Hits:

[OpenGL program] HVS

Description: 计算HVS工具箱，包括人类视觉系统计算中的纹理，亮度，边缘等-HVS Toolbox
Platform: | Size: 3072 | Author: wingor2009 | Hits:

[Graph program] DigitalWatermarkingonStillImagesUsingWaveletTransf

Description: 一种基于小波域灰度图像盲水印的新方法， 方案中利用了人类视觉系统（HVS）特征。-A new approach for non-blind watermarking of still gray level images in the wavelet domain.The method uses the Human Visual System(HVS)characteristic
Platform: | Size: 246784 | Author: 丫丫 | Hits:

[Graph program] lossless_watermark_using_HVS

Description: lossless_watermark_using_HVS使用HVS的无损水印算法-lossless_watermark_using_HVS Lossless watermarking algorithm using the HVS
Platform: | Size: 3072 | Author: 陈小潘 | Hits:

[Compress-Decompress algrithms] psnrhvsm

Description: HVS based image quality metric
Platform: | Size: 3072 | Author: anathoo | Hits:

[Graph program] BasedonHVSdigitalimagewatermarkinginwaveletdomain.

Description: 基于人类视觉系统HVS的小波域数字图像水印 包含：嵌入、提取、分解、重构等-Based on human visual system HVS digital image watermarking in wavelet domain include: embedding, extraction, decomposition, reconstruction, etc.
Platform: | Size: 2048 | Author: 杜小三 | Hits:

[Other] JND

Description: 将watson的DCT视觉模型计算出来，能够得到每个8*8块的系数的JND值- calculate watson s vision model,we can get the JND of every 8*8 s coefficients.
Platform: | Size: 1024 | Author: 李明 | Hits:

[Multimedia program] stegnography

Description: Data hiding in the still image presets a variety of challenges that arises due to the way human visual system (HVS) works and the typical modifications that image undergoes. Additionally, still images priced a relatively small host signal in which to hide data. A fairly typical 8-bit picture of 200*200 pixels provides approximately 40 KB of data space in which to work. This is equivalent to around 5 seconds of telephone-quality audio or less than a single frame NTSC television.
Platform: | Size: 199680 | Author: rupesh | Hits:

[Special Effects] fgbfdgh

Description: 基于结构信息提取的图像质量评价构相似性理论是一种关于图像质量评价的新思想．与自底向上地模拟人眼视觉系统(HVS)低阶的组 成结构不同，结构相似性理论自顶向下地模拟HVS的整体功能．-Theory is a kind of image quality evaluation about the new thoughts. And the simulation of human visual system (HVS) low-level group Into different structure, the structural similarity theory from the top down to simulate the function of the HVS.
Platform: | Size: 416768 | Author: 抓党建 | Hits:
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